Automatic weighing system for printing and dyeing powder

Abstract

The present application is suitable for weighing technical field, provide a kind of printing and dyeing powder automatic weighing system, including workbench, bunker assembly, the bunker assembly includes installation on workbench hopper, the hopper one end installs docking mechanism, drive assembly, for with bunker assembly docking and provide driving force when discharging, weighing assembly, the weighing assembly includes guide rail and the electric carriage sliding on guide rail, the device solves the problem that the material quantity is not stable by the influence of multiple factors, the weighing precision deviation, and the independent channel scheme structure redundancy of grading discharge, and the feeding speed switching is not smooth, conversion section is prone to accumulation congestion compaction, the system is matched with control material assembly by top drive assembly, realizes two-grade control material adjustment mode, i.e. fast feeding stage utilizes channel gap efficient feeding, switch to slow feeding mode of small diameter helical blade when approaching target weight, reduce the phenomenon of material surge, improve weighing accuracy, guarantee subsequent dyeing, fixing process effect.

Description

Technical Field

[0001] This invention relates to the field of weighing technology, and more specifically, to an automatic weighing system for printing and dyeing powders. Background Technology

[0002] In the dyeing and printing industry, powder weighing is a crucial step in ensuring the stability of the dyeing and printing process and the quality of the finished product. During the screw conveyor feeding process, due to the cohesiveness of the dyeing and printing powder itself and the combined effect of the screw blades inside the cavity, the screw outlet is prone to a concentrated outflow of powder. At the same time, there is also the situation of concentrated material feeding during the screw conveying process. Both of these problems directly lead to deviations in the weighing accuracy of the dyeing and printing powder, affecting the effects of subsequent dyeing, color fixing and other processes. To address the problem of weighing accuracy deviation, those skilled in the art have made improvements. One approach is to use two sets of independent parallel feeding channels, each configured with a screw conveyor structure of different diameters to adapt to fast feeding and slow feeding conditions respectively, and to adjust the feeding speed by switching channels. Another approach is drop feeding, which involves stopping the screw in advance in conjunction with drop feeding. When the weighing value is close to the target, the screw operation is stopped, and the material in the screw cavity near the discharge port falls under its own weight to complete the feeding, thereby controlling the weighing accuracy.

[0003] However, the drawback of drop feeding is that the amount of material dropped is unstable. It is affected by various factors such as powder humidity, cohesiveness, and ambient temperature, resulting in large fluctuations in the amount of material fed. There is still a problem of deviation in weighing accuracy. In the graded feeding method, the two independent channel schemes require independent sealing structures for each channel, which has problems such as structural redundancy, high equipment cost, large installation space occupation, poor smoothness of feeding speed switching, accumulation and congestion in the transition section, and even compaction. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an automatic weighing system for printing and dyeing powders.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic weighing system for printing and dyeing powders, including a workbench.

[0006] A hopper assembly, the hopper assembly including a feeding hopper mounted on a workbench, with a docking mechanism installed at one end of the feeding hopper.

[0007] The drive component is used to interface with the hopper assembly that requires weighing and feeding and to provide the driving force for discharging.

[0008] A weighing assembly, comprising a guide rail and an electric slide that slides on the guide rail, wherein a weighing module and a weighing bucket are mounted on the electric slide.

[0009] The material control assembly includes a first channel communicating with a feeding hopper, a second channel communicating with the first channel, and a sealing cover for closing. The feeding hopper, the first channel, and the second channel are equipped with augers that rotate inside. An auxiliary mechanism is installed inside the second channel.

[0010] The auxiliary mechanism includes a cone and a helical blade that rotate inside the second channel.

[0011] Top drive assembly for controlling the separation of the first and second channels, as well as the separation of the second channel from the cap.

[0012] The present invention is further configured such that: a hopper body is connected to the top of the feeding hopper, a valve plate is rotatably installed inside the feeding hopper, and a connector is rotatably mounted on one side of the feeding hopper and at a coaxial position with the docking mechanism, the connector being connected to the drive assembly.

[0013] The drive assembly includes an electric slide table slidably connected to the top of the worktable and a slide block slidably connected to the top of the electric slide table. A telescopic cylinder is installed on the top of the electric slide table, and the piston rod of the telescopic cylinder is connected to the slide block. A servo motor is horizontally installed on one side of the slide block, and the output end of the servo motor passes through the slide block and is connected to a connector. A vibration frame is installed on the top of the slide block, and a vibration motor is installed on the vibration frame.

[0014] The present invention is further configured such that: a rolling conveyor mechanism is installed inside the electric slide, the weighing bucket is disposed above the rolling conveyor mechanism, the weighing module is located below the rolling conveyor mechanism, an electric lifting platform is installed at the bottom of the electric slide, the top of the electric lifting platform is connected to the weighing module, a support frame is disposed at the top of the weighing module, the support frame is disposed through the rolling conveyor mechanism, and the weighing bucket is placed on the support frame.

[0015] The invention is further configured such that: spring rods are installed on the sidewalls of both the first channel and the second channel; the spring rod corresponding to the first channel is connected to the second channel, and the spring rod corresponding to the second channel is connected to the cover; a first swing arm is hinged to the top of the first channel; a first connecting plate is connected to the sidewall of the first swing arm; a first guide post is connected to the sidewall of the second channel; an elongated hole is formed in the sidewall of the first swing arm; the first guide post slides inside the elongated hole; a second swing arm is hinged to the top of the second channel; a second connecting plate is connected to the sidewall of the second swing arm; a second guide post is connected to the sidewall of the second channel; an elongated hole is formed in the sidewall of the second swing arm; the second guide post slides inside the elongated hole.

[0016] The present invention is further configured such that: a rotating shaft is inserted inside the auger, an air-expanding sleeve is fitted on the outer wall of the rotating shaft, the air-expanding sleeve is inserted inside the auger, and a coupling is connected between the end of the rotating shaft away from the first channel and the end of the connector.

[0017] The present invention is further configured such that: a rotating post is inserted into one end of the cone with a large diameter, a spiral groove is formed on the outer wall of the rotating post, a protruding post is connected inside the cone, the protruding post is inserted into the corresponding spiral groove, a second ratchet is connected to one end of the rotating post away from the cone, a first ratchet is connected to one end of the second ratchet near the first channel, the first ratchet and the second ratchet are adapted to each other, and a spring is connected between one end of the rotating post and the inner wall of the cone.

[0018] The present invention is further configured such that: a first ring body is connected to the inner wall of the first channel and the end near the second channel, and a first inclined portion is formed at the end of the first ring body near the first channel; a second ring body is connected to the inner wall of the second channel and the end near the cap, and a second inclined portion is formed at the end of the second ring body near the second channel.

[0019] The present invention is further configured such that: a mesh plate is installed at one end of the second channel near the cover, and a scraper is provided at the center of the cover, the scraper being attached to the side wall of the mesh plate.

[0020] The present invention is further configured such that: the top drive assembly includes a bracket installed on the top of the electric carriage, a connecting plate installed on the inner top wall of the bracket, and a first top drive cylinder. The piston rod end of the first top drive cylinder is connected to two push rods. The bottom of the connecting plate is connected to a second top drive cylinder. The piston rod end of the second top drive cylinder is connected to a top frame. The bracket is connected to a suspension extending below the connecting plate. An electric slide rail is installed at the bottom of the suspension. A scraper motor is slidably installed at the bottom of the electric slide rail. The output end of the scraper motor and the end of the scraper away from the cover are both connected to a force transmission plate. The two force transmission plates are compatible.

[0021] The automatic weighing system for printing and dyeing powders weighs materials through the following steps:

[0022] S1. First, at least one set of hopper components can be placed on the top of the workbench as needed. Place the weighing bucket to be weighed on the electric slide, then control the weighing component to move as a whole, so that the weighing bucket moves to the position of the corresponding hopper component. At the same time, control the drive component to move to the position of the corresponding hopper component. Then, use the drive component to connect with the hopper component and drive the hopper component and the material control component to discharge the material.

[0023] S2. During the discharge process, the top drive assembly is used to control the second channel and the entire cover to move away from the first channel. At this time, the powder falls quickly through the gap between the first channel and the second channel, and the powder is weighed synchronously by the weighing module.

[0024] S3. When the powder is about to reach the target weight, the top drive assembly controls the docking of the first and second channels, while the cap separates from the second channel. The powder slowly falls through the gap between the second channel and the cap until the target weight is reached.

[0025] S4. After the weighing module finishes weighing, the cover is closed and the second channel is merged to stop feeding. At this time, the weighing component can be moved to the position of other hopper components to add material. After all the material is added, the weighing bucket can be taken out.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] (1) By cooperating with the top drive assembly and the material control assembly, a two-stage material control mode is achieved. In the fast feeding stage, the material is fed efficiently using the channel gap. When the target weight is approached, the material is switched to the slow feeding mode with small diameter spiral blades to reduce the gushing phenomenon, improve the weighing accuracy, and ensure the effect of subsequent dyeing and color fixing processes.

[0028] (2) By setting up an air expansion sleeve, a first ratchet, a second ratchet, a rotating column, a spiral groove, a protruding column and a first ring body, the air expansion sleeve is used to achieve connection or separation control with the auger. Before the channel docking, the rotating shaft drives the first ratchet and the second ratchet to mesh. The rotating column drives the auger to reverse through the cooperation of the spiral groove and the protruding column. The first ring body blocks the accumulation of powder, thereby clearing the powder stuck on the channel docking surface, avoiding damage to the sealing performance and wear of structural parts, and ensuring smooth channel switching.

[0029] (3) By using the air expansion sleeve to switch the linkage state between the auger and the rotating shaft, the first ratchet and the second ratchet are connected to drive the rotating column, cone and spiral blade to rotate to achieve slow material drop. The second ring body suppresses the powder surging, thus achieving the effect of flexibly switching the fast and slow material drop mode to match the weighing requirements and improve the powder conveying and weighing accuracy. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the silo component structure in this invention.

[0032] Figure 3 This is a schematic diagram of the driving component structure in this invention.

[0033] Figure 4 for Figure 3 A partial structural diagram.

[0034] Figure 5 This is a schematic diagram of the weighing component structure in this invention.

[0035] Figure 6 for Figure 5 A side view structural diagram.

[0036] Figure 7 This is a schematic diagram of the combined structure of the hopper assembly and the material control assembly in this invention.

[0037] Figure 8 for Figure 7 A partial structural diagram.

[0038] Figure 9 for Figure 8 A magnified structural diagram of area A in the middle.

[0039] Figure 10 for Figure 8 A schematic diagram of a partial structure viewed from the middle side.

[0040] Figure 11 This is a schematic diagram of the cooperation structure between the first ratchet and the auxiliary mechanism in this invention.

[0041] Figure 12 This is a schematic diagram of the exploded structure of the auxiliary mechanism in this invention.

[0042] Figure 13 for Figure 10 A schematic diagram of the internal structure.

[0043] Figure 14 This is a schematic diagram of the top drive assembly structure in this invention.

[0044] Explanation of reference numerals in the attached diagram: 1. Workbench;

[0045] 2. Hopper assembly; 21. Feed hopper; 22. Hopper body; 23. Docking mechanism; 24. Connector; 25. Valve plate;

[0046] 3. Drive components; 31. Electric slide table; 32. Slide base; 33. Vibration motor; 34. Vibration frame; 35. Telescopic cylinder; 36. Servo motor; 37. Connector;

[0047] 4. Weighing assembly; 41. Guide rail; 42. Electric carriage; 43. Rolling conveyor mechanism; 44. Weighing bucket; 45. Weighing module; 46. Electric lifting platform;

[0048] 5. Top drive assembly; 51. Bracket; 52. Connecting plate; 53. First top drive cylinder; 54. Push rod; 55. Second top drive cylinder; 56. Top frame; 57. Electric slide rail; 58. Powder scraper motor; 59. Force transmission plate;

[0049] 6. Material control assembly; 61. Screwdriver; 62. First channel; 63. Second channel; 64. Cover; 65. Spring rod; 66. Air sleeve; 67. Coupling; 68. First ring body; 69. First swing arm; 601. First connecting plate; 602. First guide post; 603. Second swing arm; 604. Second connecting plate; 605. Second guide post; 606. Rotating shaft; 607. First ratchet;

[0050] 608. Auxiliary mechanism; 6081. Conical cylinder; 6082. Helical blade; 6083. Protruding post; 6084. Rotating post; 6085. Second ratchet; 6086. Helical groove; 6087. Spring;

[0051] 609. Mesh plate; 6001. Scraper; 6002. Second ring body. Detailed Implementation

[0052] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0054] Please see Figures 1-14 The present invention provides the following technical solutions:

[0055] Example 1: An automatic weighing system for printing and dyeing powder includes a workbench 1. A hopper assembly 2 is installed on the top of the workbench 1. Multiple hopper assemblies 2 can be used. The hopper assemblies 2 are used to store printing and dyeing powder and for subsequent weighing and supply. The specific structure of the hopper assembly 2 is as follows:

[0056] See Figure 2 and Figure 7 The hopper assembly 2 includes a feeding hopper 21 installed on the workbench 1. The top of the feeding hopper 21 is connected to the hopper body 22, which is used to store dyeing powder. The dyeing powder falls into the feeding hopper 21 by gravity. A valve plate 25 is rotatably installed inside the feeding hopper 21. The valve plate 25 is controlled by a drive motor. That is, when the feeding hopper 21 needs to supply material, the valve plate 25 opens, and the dyeing powder inside the hopper body 22 falls into the feeding hopper 21. Conversely, when the feeding hopper 21 stops supplying material, the valve plate 25 is closed.

[0057] See Figure 1A drive assembly 3 is installed on the top of the workbench 1 and on one side of the hopper assembly 2. The drive assembly 3 is used to dock with the hopper assembly 2 that needs to be weighed and fed and to provide driving force for discharging. A docking mechanism 23 is installed at one end of the feeding hopper 21. A connector 24 is rotatably mounted on one side of the feeding hopper 21 and on the same axis as the docking mechanism 23. The connector 24 is connected to the drive assembly 3. The specific structure of the drive assembly 3 is as follows:

[0058] See Figure 3 and Figure 4 The drive assembly 3 includes an electric slide 31 slidably connected to the top of the workbench 1 and a slide block 32 slidably connected to the top of the electric slide 31. A telescopic cylinder 35 is installed on the top of the electric slide 31. The piston rod of the telescopic cylinder 35 is connected to the slide block 32. A servo motor 36 is horizontally installed on one side of the slide block 32. The output end of the servo motor 36 passes through the slide block 32 and is connected to a connector 37. The electric slide 31 is used to drive the slide block 32, the telescopic cylinder 35, the servo motor 36 and the connector 37 to move synchronously, thereby adjusting the position of the connector 37. That is, at least one set of hopper components 2 can be placed on the top of the workbench 1 as needed. When it is necessary to discharge and weigh one set of hopper components 2, the electric slide 31 drives the connector 37 to move to the position of the connector 24 of this set of hopper components 2. Then, the telescopic cylinder 35 drives the slide block 32 to move, so that the connector 37 and the connector 24 are docked.

[0059] See Figure 3 and Figure 4 A vibration frame 34 is installed on the top of the slide 32, and a vibration motor 33 is installed on the vibration frame 34. When the connector 37 and the connector 24 are connected, the vibration frame 34 is attached to the outer wall of the hopper body 22. The vibration motor 33 and the servo motor 36 are started. The vibration motor 33 transmits the oscillation force to the hopper body 22 through the vibration frame 34, causing the powder accumulated inside the hopper body 22 to fall towards the feeding hopper 21. The servo motor 36 drives the connector 37 and the connector 24 to rotate. The connector 24 applies the rotational force to the inside of the feeding hopper 21, thereby facilitating the discharge of material from the feeding hopper 21.

[0060] See Figure 1 A weighing component 4 is installed on the side of the workbench 1 away from the drive component 3. The weighing component 4 is used to acquire and weigh the powder discharged from the feed hopper 21. The specific structure of the weighing component 4 is as follows:

[0061] See Figure 5 and Figure 6 The weighing component 4 includes a guide rail 41 and an electric slide 42 that slides on the guide rail 41. The electric slide 42 is equipped with a weighing module 45 and a weighing bucket 44.

[0062] The electric slide 42 is equipped with a rolling conveyor mechanism 43. The weighing bucket 44 is positioned above the rolling conveyor mechanism 43, and the weighing module 45 is positioned below the rolling conveyor mechanism 43. An electric lifting platform 46 is installed at the bottom of the electric slide 42. The top of the electric lifting platform 46 is connected to the weighing module 45. A support frame is provided on the top of the weighing module 45. The support frame passes through the rolling conveyor mechanism 43. The rolling conveyor mechanism 43 is a combination of multiple rotating rollers. The weighing bucket 44 is placed on the support frame. The rolling conveyor mechanism 43 is used to drive the weighing bucket 44 to move, thereby transferring the weighing bucket 44 to or removing it from the weighing position. When weighing powder, the weighing bucket 44 to be weighed is placed on top of the weighing module 45. The electric lifting platform 46 controls the weighing module 45 and the support frame to move upward. The support frame moves upward along the gap between the multiple rotating rollers of the rolling conveyor mechanism 43, lifting the weighing bucket 44. The bottom of the weighing bucket 44 moves away from the rolling conveyor mechanism 43. At this time, the weighing module 45 can perform weighing operations.

[0063] As powder is continuously added to the weighing barrel 44, the weighing module 45 weighs the discharged powder in real time. When the powder reaches the target weight, the rolling conveyor mechanism 43 discharges the weighing barrel 44.

[0064] If other powders need to be added, the weighing component 4 can be moved to the position of other hopper components 2 for adding. After all the powders have been added, the weighing bucket 44 is sent out from inside the electric slide 42.

[0065] See Figure 7 and Figure 8 A material control component 6 is connected to one side of the feeding hopper 21. The material control component 6 is used to control the discharge speed and powder amount of the feeding hopper 21. The specific structure of the material control component 6 is as follows:

[0066] The material control assembly 6 includes a first channel 62 connected to the feeding hopper 21, a second channel 63 connected to the first channel 62, and a cover 64 for sealing. The feeding hopper 21, the first channel 62, and the second channel 63 have augers 61 rotating inside. When the servo motor 36 drives the connector 37 and the connector 24 to rotate, the connector 24 applies rotational force to the auger 61 inside the feeding hopper 21, causing the auger 61 to rotate and transport the powder in the feeding hopper 21 into the first channel 62 and the second channel 63, thereby facilitating the discharge into the weighing barrel 44.

[0067] See Figure 6 A top drive assembly 5 is installed on the top of the electric carriage 42. The top drive assembly 5 is used to control the separation of the second channel 63 and the cover 64. When the auger 61 rotates to feed material, the top drive assembly 5 first opens the cover 64, causing the end of the second channel 63 to be exposed above the weighing barrel 44. The powder is discharged through the gap between the end of the second channel 63 and the cover 64, and the powder falls into the weighing barrel 44 for weighing.

[0068] In Example 2, during the screw conveyor feeding stage, due to the cohesive nature of the dyeing powder itself, a concentrated outflow of powder is prone to occur at the screw outlet. Simultaneously, there is also a situation where a single material is concentrated during screw conveying. Both of these problems directly lead to deviations in the weighing accuracy of the dyeing powder, affecting subsequent dyeing and color-fixing processes. To address the weighing accuracy deviation problem, those skilled in the art have implemented two improvements: one is to use two sets of independent, parallel feeding channels, each configured with a screw conveyor structure of different diameters to adapt to fast and slow feeding conditions, adjusting the feeding speed by switching channels; the other is drop-feeding, which involves stopping the screw in advance in conjunction with drop-feeding. When the weighing value approaches the target, the screw operation stops, and the material within the screw cavity near the outlet falls under its own weight to complete the feeding, thereby controlling the weighing accuracy.

[0069] However, the drawback of drop feeding is that the drop material quantity is unstable. It is affected by various factors such as powder humidity, cohesiveness, and ambient temperature, resulting in large fluctuations in the feeding quantity. There is still a problem of deviation in weighing accuracy. In the graded feeding method, the two independent channel schemes need to be configured with independent sealing structures for each channel, which has problems such as structural redundancy, high equipment cost, large installation space occupation, and poor smoothness of feeding speed switching.

[0070] Therefore, further improvements were made to the top drive assembly 5 and the material control assembly 6.

[0071] See Figure 14 The top drive assembly 5 includes a bracket 51 mounted on the top of the electric carriage 42, a connecting plate 52 mounted on the inner top wall of the bracket 51, and a first top drive cylinder 53. The piston rod end of the first top drive cylinder 53 is connected to two push rods 54. The bottom of the connecting plate 52 is connected to a second top drive cylinder 55. The piston rod of the second top drive cylinder 55 is connected to a top frame 56. A suspension is connected to the bracket 51 and located below the connecting plate 52. An electric slide rail 57 is mounted on the bottom of the suspension. A powder scraper motor 58 is slidably mounted on the bottom of the electric slide rail 57. The first top drive cylinder 53 is used to drive the two push rods 54 to move horizontally. The electric slide rail 57 is used to drive the powder scraper motor 58 to move synchronously. The second top drive cylinder 55 is used to drive the top frame 56 to move horizontally.

[0072] See Figures 8-11 Spring rods 65 are installed on the side walls of the first channel 62 and the second channel 63. The spring rod 65 corresponding to the first channel 62 is connected to the second channel 63. That is, the spring rod 65 is divided into two parts: a telescopic rod and a spring. The spring is sleeved on the outer side wall of the telescopic rod, and one end of the spring is connected to one end of the telescopic rod.

[0073] In the spring rod 65 corresponding to the first channel 62, the corresponding telescopic rod passes through the end position of the first channel 62, and the end of the spring is connected to the end side wall of the first channel 62. After passing through the end of the first channel 62, the telescopic rod is connected to one end of the second channel 63.

[0074] The spring rod 65 corresponding to the second channel 63 is connected to the cover 64. In the spring rod 65 corresponding to the second channel 63, the corresponding telescopic rod passes through the end position of the second channel 63, and the end of the spring is connected to the end side wall of the second channel 63. After passing through the end of the second channel 63, the telescopic rod is connected to one end of the cover 64.

[0075] The top of the first channel 62 is hinged to a first swing arm 69, the side wall of the first swing arm 69 is connected to a first connecting plate 601, the side wall of the second channel 63 is connected to a first guide post 602, the side wall of the first swing arm 69 has an elongated hole, the first guide post 602 slides inside the elongated hole, the top of the second channel 63 is hinged to a second swing arm 603, the side wall of the second swing arm 603 is connected to a second connecting plate 604, the side wall of the second channel 63 is connected to a second guide post 605, the side wall of the second swing arm 603 has an elongated hole, the second guide post 605 slides inside the elongated hole.

[0076] See Figure 13 A mesh plate 609 is installed at one end of the second channel 63 near the cover 64. A scraper 6001 is inserted through the center of the cover 64. The scraper 6001 is attached to the side wall of the mesh plate 609. The mesh plate 609 is used to initially block the conveyed powder, while the scraper 6001 is used to scrape off the powder remaining on the mesh plate 609.

[0077] Specifically, the output end of the scraper motor 58 and the end of the scraper 6001 away from the cover 64 are both connected to the force transmission plate 59, and the two force transmission plates 59 are compatible.

[0078] During the material discharge process, the electric slide rail 57 first drives the scraper motor 58 and the corresponding force transmission plate 59 to move, causing the two force transmission plates 59 to connect. Then, the first top drive cylinder 53 drives the top rod 54 to move. The top rod 54 squeezes the first connecting plate 601, and the first connecting plate 601 drives the first swing arm 69 to swing as a whole. The first swing arm 69 then pushes the first guide post 602 and the second channel 63 to move as a whole. At this time, the cover 64 moves synchronously with the second channel 63. The spring rod 65 on the first channel 62 is pulled, and a material drop gap is formed between the first channel 62 and the second channel 63. After being conveyed by the screw conveyor 61, the powder falls quickly through this material drop gap, and some of the powder is impacted and surges into the interior of the second channel 63. When the powder falls into the weighing barrel 44, the weighing module 45 weighs the powder simultaneously.

[0079] When the powder is about to reach the target weight, the piston rod of the first top-drive cylinder 53 retracts. At this time, the first connecting plate 601 and the first swing arm 69 lose the compressive force. The spring rod 65 on the first channel 62 pulls the second channel 63 back. When the first channel 62 and the second channel 63 are connected, the second top-drive cylinder 55 drives the top frame 56 to move. The top frame 56 compresses the second connecting plate 604. The second connecting plate 604 drives the second swing arm 603 to swing, which in turn pushes the second guide post 605 and the cover 64 to move horizontally. The cover 64 separates from the second channel 63.

[0080] See Figure 11 and Figure 12 An auxiliary mechanism 608 is installed inside the second channel 63. The auxiliary mechanism 608 includes a cone 6081 and a spiral blade 6082 that rotate inside the second channel 63. When the cover 64 and the second channel 63 are separated, the powder inside the second channel 63 is fed by the spiral blade 6082 through the rotation of the cone 6081 and the spiral blade 6082 and falls into the weighing bucket 44 through the gap between the cover 64 and the second channel 63.

[0081] The diameter of the spiral blade 6082 gradually shortens, and the spiral spacing is smaller than that of the auger 61, thereby reducing the discharge volume during rotation and further achieving the purpose of material control.

[0082] By cooperating with the top drive assembly 5 and the material control assembly 6, a two-stage material control adjustment mode is achieved. In the fast feeding stage, the material is fed efficiently through the gap between the first channel 62 and the second channel 63. When the target weight is approached, the feeding mode is switched to the slow feeding mode of the small diameter spiral blade 6082 to reduce material gushing, improve weighing accuracy, and ensure the effect of subsequent dyeing and color fixing processes.

[0083] In Example 3, during the dual-channel switching operation of the powder screw conveyor system, when the first channel 62 and the second channel 63 perform the docking and separation switching action, due to the gap between the docking end faces of the channels and the fact that the powder has a certain degree of fluidity and adhesion, it is very easy for the powder to become stuck between the docking surfaces of the two channels. This situation has two consequences: first, the stuck powder will affect the sealing performance after the two channels are docked, causing powder leakage or external impurities to enter the channel; second, the accumulated powder will interfere with the smoothness of the channel switching and increase the wear between structural components.

[0084] Furthermore, if the auger continues to supply material, the powder will continue to be conveyed forward. Since the feeding amounts of the auger 61 and the spiral blade 6082 are different, the powder will accumulate or even be compacted at the positions of the first channel 62 and the second channel 63.

[0085] For this purpose, please refer to Figures 8-13A rotating shaft 606 is inserted inside the auger 61. An air expansion sleeve 66 is fitted on the outer wall of the rotating shaft 606. The air expansion sleeve 66 is inserted inside the auger 61. A coupling 67 is connected between the end of the rotating shaft 606 away from the first channel 62 and the end of the connector 24. The coupling 67 is used to separate the rotating shaft 606 and the connector 24. When the connector 24 rotates, the coupling 67, the rotating shaft 606, the air expansion sleeve 66 and the auger 61 rotate. When it is necessary to keep the auger 61 stopped, the air expansion sleeve 66 contracts and separates from the auger 61. At this time, the rotating shaft 606 rotates inside the auger 61, while the auger 61 remains in a stopped feeding state. Because the auger 61 stops feeding, the powder in the first channel 62 will not be continuously fed into the second channel 63, thus preventing the powder from accumulating or even being compacted.

[0086] See Figures 8-13 A rotating post 6084 is inserted into the large-diameter end of the cone 6081. A spiral groove 6086 is formed on the outer wall of the rotating post 6084. A protruding post 6083 is connected inside the cone 6081, and the protruding post 6083 is inserted into the corresponding spiral groove 6086. A second ratchet 6085 is connected to the end of the rotating post 6084 away from the cone 6081. A first ratchet 607 is connected to the end of the second ratchet 6085 near the first channel 62. The first ratchet 607 and the second ratchet 6085 are adapted to each other. A spring 6087 is connected between one end of the column 6084 and the inner wall of the cone 6081. When the first channel 62 and the second channel 63 are separated, the first ratchet 607 and the second ratchet 6085 remain separated. In this state, the air expansion sleeve 66 is connected to the auger 61, and the coupling 67 remains connected. At this time, the auger 61 can be controlled to rotate, and the powder in the feeding hopper 21 is transported to the material drop gap between the first channel 62 and the second channel 63. The powder falls quickly through this material drop gap.

[0087] When the first channel 62 and the second channel 63 are connected, the first ratchet 607 and the second ratchet 6085 are connected, and the air expansion sleeve 66 is separated from the auger 61. At this time, while keeping the auger 61 in a stopped state, the first ratchet 607 and the second ratchet 6085 are driven to rotate by the rotating shaft 606. The second ratchet 6085 drives the rotating column 6084, the cone 6081 and the spiral blade 6082 to rotate, thereby completing the small batch conveying of powder, that is, achieving the effect of slow material drop, and further achieving the purpose of material control.

[0088] See Figure 13A first ring 68 is connected to the inner wall of the first channel 62 near the end of the second channel 63. A first inclined portion is formed at the end of the first ring 68 near the end of the first channel 62. A second ring 6002 is connected to the inner wall of the second channel 63 near the end of the cover 64. A second inclined portion is formed at the end of the second ring 6002 near the end of the second channel 63. The first ring 68 on the inner wall of the first channel 62 is used to slightly block the powder discharged from the first channel 62. That is, when switching to the second channel 63 for feeding, it reduces the accumulation of powder at the end of the first channel 62, which affects the seal. The second ring 6002 is used to reduce the gushing of powder when it is discharged from the end of the second channel 63.

[0089] Specifically, during the material discharge process, the first channel 62 and the second channel 63 are first separated, forming a material drop gap between them. After being conveyed by the screw conveyor 61, the powder falls quickly through this material drop gap, and some of the powder is impacted and surged into the interior of the second channel 63. When the powder falls into the interior of the weighing barrel 44, the weighing module 45 simultaneously weighs the powder.

[0090] When the powder is about to reach the target weight, the piston rod of the first top-drive cylinder 53 retracts. At this time, the first connecting plate 601 and the first swing arm 69 lose their compressive force. The spring rod 65 on the first channel 62 pulls the second channel 63 back. During the pull-back process, the second ratchet 6085 first engages with the first ratchet 607. After engagement, the coupling 67 controls the shaft 606 and the connector 24 to disconnect. As the second channel 63 continues to be pulled back, the rotating column 6084 is squeezed and slides into the interior of the cone 6081, and the spring 6087 is compressed. At the same time, the protruding column 6083... The internal sliding of the corresponding spiral groove 6086 causes rotation. When the rotating column 6084 rotates, it drives the second ratchet 6085 and the first ratchet 607 to rotate. Due to the opening direction of the spiral groove 6086 and the engagement direction of the second ratchet 6085 and the first ratchet 607, the first ratchet 607 drives the rotating shaft 606, the air sleeve 66 and the auger 61 to reverse. When the auger 61 reverses, it transports the powder at the discharge end of the first channel 62 in the opposite direction. In conjunction with the first ring 68 at the end of the first channel 62, it recovers the powder accumulated at the discharge end of the first channel 62, reducing powder accumulation.

[0091] When the first channel 62 and the second channel 63 are docked, the second top drive cylinder 55 drives the top frame 56 to move. The top frame 56 presses against the second connecting plate 604, and the second connecting plate 604 drives the second swing arm 603 to swing. This causes the second swing arm 603 to push the second guide post 605 and the cover 64 to move horizontally. The cover 64 separates from the second channel 63. Then, the coupling 67 connects the rotating shaft 606 and the connector 24. The air expansion sleeve 66 retracts and separates from the auger 61. At this time, the servo motor 36 reverses. The servo motor 36 drives the connector 24, rotating shaft 606, first ratchet 607, second ratchet 6085, rotating post 6084, cone 6081 and spiral blade 6082 to rotate. The spiral blade 6082 continues to convey some of the powder inside the second channel 63 forward and slowly drops the powder through the material drop gap between the second channel 63 and the cover 64 until the target weight is reached.

[0092] By setting up an air expansion sleeve 66, a first ratchet 607, a second ratchet 6085, a rotating post 6084, a spiral groove 6086, a protruding post 6083, and a first ring body 68, the air expansion sleeve 66 is used to control the connection or separation with the auger 61. Before the first channel 62 and the second channel 63 are connected, the rotating shaft 606 drives the first ratchet 607 and the second ratchet 6085 to mesh. The rotating post 6084 drives the auger 61 to reverse through the cooperation of the spiral groove 6086 and the protruding post 6083. With the cooperation of the first ring body 68, the powder accumulation is blocked, which achieves the effect of clearing the powder stuck on the docking surface of the first channel 62 and the second channel 63, avoiding damage to the sealing performance and wear of structural components, and ensuring smooth channel switching.

[0093] By using the air expansion sleeve 66 to switch the linkage state between the auger 61 and the rotating shaft 606, the first ratchet 607 and the second ratchet 6085 are connected to drive the rotating column 6084, the cone 6081 and the spiral blade 6082 to rotate to achieve slow material discharge. The second ring body 6002 suppresses the surging of powder, thus achieving the effect of flexibly switching between fast and slow material discharge modes to match weighing requirements and improve the weighing accuracy of powder conveying.

[0094] Example 4: An automatic weighing system for printing and dyeing powders. The weighing system weighs materials through the following steps:

[0095] S1. First, at least one set of hopper components 2 can be placed on the top of the workbench 1 as needed. The weighing bucket 44 to be weighed is placed on the electric slide 42. Then, the weighing component 4 is moved as a whole so that the weighing bucket 44 moves to the position of the corresponding hopper component 2. At the same time, the drive component 3 is moved to the position of the corresponding hopper component 2. Then, the drive component 3 is used to dock with the hopper component 2 and drive the hopper component 2 and the material control component 6 to discharge the material.

[0096] The more specific steps in S1 are as follows:

[0097] S11. First, at least one set of hopper components 2 can be placed on the top of the workbench 1 as needed, and the weighing bucket 44 to be weighed is placed on the top of the weighing module 45. The electric lifting platform 46 controls the weighing module 45 to lift the weighing bucket 44 away from the rolling conveyor mechanism 43. At this time, the weighing module 45 can perform weighing operations.

[0098] S12. Then, control the electric slide 42 to move as a whole on the top of the guide rail 41, so that the weighing bucket 44 moves to the position of the corresponding hopper assembly 2. At the same time, control the electric slide 31 to slide on the top of the workbench 1, so that the connector 37 moves to the position of the corresponding docking mechanism 23. Then, the telescopic cylinder 35 drives the slide 32 to move, so that the connector 37 and the connector 24 are docked. At the same time, the vibrating frame 34 is attached to the outer wall of the hopper body 22.

[0099] S13. After all adjustments are completed, the vibration motor 33 and the servo motor 36 are started. The vibration motor 33 transmits the oscillation force to the hopper body 22 through the vibration frame 34, causing the powder accumulated inside the hopper body 22 to fall towards the feeding hopper 21. The servo motor 36 drives the coupling 37 and the connector 24 to rotate. The connector 24 applies the rotational force to the coupling 67, the rotating shaft 606, the air expansion sleeve 66 and the auger 61 in sequence. The auger 61 conveys the falling powder towards the weighing bucket 44 by rotating.

[0100] S2. During the material discharge process, the top drive assembly 5 controls the second channel 63 and the cover 64 to move away from the first channel 62 as a whole. At this time, the powder falls quickly through the gap between the first channel 62 and the second channel 63, and the powder is weighed synchronously by the weighing module 45.

[0101] The more specific steps of S2 are as follows:

[0102] S21. During the material discharge process, the electric slide rail 57 first drives the scraper motor 58 and the corresponding force transmission plate 59 to move, causing the two force transmission plates 59 to connect. Then, the first top drive cylinder 53 drives the top rod 54 to move. The top rod 54 squeezes the first connecting plate 601. The first connecting plate 601 drives the first swing arm 69 to swing as a whole. The first swing arm 69 pushes the first guide post 602 and the second channel 63 to move as a whole. At this time, the cover 64 moves synchronously with the second channel 63. The spring rod 65 on the first channel 62 is pulled, and a material drop gap is formed between the first channel 62 and the second channel 63. After being conveyed by the screw conveyor 61, the powder falls quickly through this material drop gap, and some of the powder is impacted and surges into the interior of the second channel 63. When the powder falls into the interior of the weighing barrel 44, the weighing module 45 weighs the powder simultaneously.

[0103] S3. When the powder is about to reach the target weight, the top drive assembly 5 controls the first channel 62 and the second channel 63 to dock, while the cover 64 separates from the second channel 63. The powder slowly falls through the gap between the second channel 63 and the cover 64 until the target weight is reached.

[0104] The more specific steps for S3 are as follows:

[0105] S31. When the powder is about to reach the target weight, the piston rod of the first top drive cylinder 53 retracts. At this time, the first connecting plate 601 and the first swing arm 69 lose the compressive force, and the spring rod 65 on the first channel 62 pulls the second channel 63 back.

[0106] S32. During the retraction of the second channel 63, the second ratchet 6085 first engages with the first ratchet 607. After engagement, the coupling 67 controls the shaft 606 and connector 24 to disconnect. As the second channel 63 continues to be retracted, the rotating column 6084 is squeezed and slides into the interior of the cone 6081, and the spring 6087 is compressed. At the same time, the protruding column 6083 slides inside the corresponding spiral groove 6086, thus rotating. When the rotating column 6084 rotates, it drives the first... The rotation of the second ratchet 6085 and the first ratchet 607 causes the first ratchet 607 to drive the rotating shaft 606, the air sleeve 66, and the auger 61 to reverse due to the opening direction of the spiral groove 6086 and the wedge direction of the second ratchet 6085 and the first ratchet 607. When the auger 61 reverses, it transports the powder at the discharge end of the first channel 62 in the opposite direction. In conjunction with the first ring 68 at the end of the first channel 62, it recovers the powder accumulated at the discharge end of the first channel 62, thereby reducing the accumulation of powder.

[0107] S33. When the first channel 62 and the second channel 63 are docked, the second top drive cylinder 55 drives the top frame 56 to move. The top frame 56 presses against the second connecting plate 604. The second connecting plate 604 drives the second swing arm 603 to swing, thereby causing the second swing arm 603 to push the second guide post 605 and the cover 64 to move horizontally, and the cover 64 separates from the second channel 63.

[0108] S34. Subsequently, coupling 67 connects shaft 606 and connector 24, and air sleeve 66 retracts and separates from auger 61. At this time, servo motor 36 reverses, and servo motor 36 drives connector 24, shaft 606, first ratchet 607, second ratchet 6085, rotating column 6084, cone 6081 and spiral blade 6082 to rotate. Spiral blade 6082 continues to convey part of the powder inside the second channel 63 forward, and slowly drops the powder through the material drop gap between the second channel 63 and the cover 64 until the target weight is reached.

[0109] S4. After the weighing module 45 finishes weighing, the cover 64 and the second channel 63 are merged to stop the feeding. At this time, the weighing component 4 can be moved to the position of other material bin components 2 to add material. After all the material is added, the weighing bucket 44 can be taken out.

[0110] The more specific steps for S4 are as follows:

[0111] After weighing by the weighing module 45, the top frame 56 is retracted by the second top drive cylinder 55, and the electric slide rail 57 drives the scraper motor 58 and the force transmission plate 59 away from the corresponding feeding hopper 21. At this time, the feeding stops, and the weighing component 4 can move to the position of other hopper components 2 for feeding. After all the feeding is completed, the electric lifting platform 46 descends, causing the weighing bucket 44 to fall on the top of the rolling conveyor mechanism 43. The rolling conveyor mechanism 43 drives the weighing bucket 44 to be sent out from the inside of the electric slide 42.

[0112] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

Claims

1. An automatic weighing system for printing and dyeing powders, characterized in that: Including the workbench (1); The hopper assembly (2) includes a feeding hopper (21) installed on the workbench (1), and a docking mechanism (23) is installed at one end of the feeding hopper (21). The drive component (3) is used to interface with the hopper component (2) that requires weighing and feeding and to provide driving force during discharge; Weighing assembly (4), the weighing assembly (4) includes a guide rail (41) and an electric slide (42) that slides on the guide rail (41), the electric slide (42) is provided with a weighing module (45) and a weighing bucket (44). The material control assembly (6) includes a first channel (62) communicating with the feeding hopper (21), a second channel (63) communicating with the first channel (62), and a cover (64) for sealing. The feeding hopper (21), the first channel (62), and the second channel (63) are equipped with augers (61) that rotate inside. The second channel (63) is equipped with an auxiliary mechanism (608). The auxiliary mechanism (608) includes a cone (6081) and a helical blade (6082) that rotate inside the second channel (63). Top drive assembly (5) for controlling the separation of the first channel (62) and the second channel (63) as well as the separation of the second channel (63) and the cover (64); Spring rods (65) are installed on the side walls of the first channel (62) and the second channel (63). The spring rod (65) corresponding to the first channel (62) is connected to the second channel (63), and the spring rod (65) corresponding to the second channel (63) is connected to the cover (64). A first swing arm (69) is hinged to the top of the first channel (62). A first connecting plate (601) is connected to the side wall of the first swing arm (69). A first guide post (602) is connected to the side wall of the second channel (63). An elongated hole is opened in the side wall of the first swing arm (69). The first guide post (602) slides inside the elongated hole. A second swing arm (603) is hinged to the top of the second channel (63). A second connecting plate (604) is connected to the side wall of the second swing arm (603). A second guide post (605) is connected to the side wall of the second channel (63). An elongated hole is opened in the side wall of the second swing arm (603). The second guide post (605) slides inside the elongated hole. A rotating shaft (606) is inserted inside the auger (61), and an air expansion sleeve (66) is fitted on the outer wall of the rotating shaft (606). The air expansion sleeve (66) is inserted inside the auger (61), and a coupling (67) is connected between the end of the rotating shaft (606) away from the first channel (62) and the end of the connector (24). A rotating post (6084) is inserted into one end of the cone (6081) with a large diameter. A spiral groove (6086) is formed on the outer wall of the rotating post (6084). A protruding post (6083) is connected inside the cone (6081). The protruding post (6083) is inserted into the corresponding spiral groove (6086). A second ratchet (6085) is connected to the end of the rotating post (6084) away from the cone (6081). A first ratchet (607) is connected to the end of the second ratchet (6085) near the first channel (62). The first ratchet (607) and the second ratchet (6085) are adapted to each other. A spring (6087) is connected between one end of the rotating post (6084) and the inner wall of the cone (6081).

2. The automatic weighing system for printing and dyeing powder according to claim 1, characterized in that: The top of the feeding hopper (21) is connected to the hopper body (22), and a valve plate (25) is rotatably installed inside the feeding hopper (21). A connector (24) is rotatably mounted on one side of the feeding hopper (21) and coaxial with the docking mechanism (23). The connector (24) is connected to the drive assembly (3). The drive assembly (3) includes an electric slide (31) slidably connected to the top of the worktable (1) and a slide block (32) slidably connected to the top of the electric slide (31). A telescopic cylinder (35) is installed on the top of the electric slide (31). The piston rod of the telescopic cylinder (35) is connected to the slide block (32). A servo motor (36) is horizontally installed on one side of the slide block (32). The output end of the servo motor (36) passes through the slide block (32) and is connected to a connector (37). A vibration frame (34) is installed on the top of the slide block (32). A vibration motor (33) is installed on the vibration frame (34).

3. The automatic weighing system for printing and dyeing powder according to claim 1, characterized in that: The electric slide (42) is equipped with a rolling conveyor mechanism (43). The weighing bucket (44) is located above the rolling conveyor mechanism (43). The weighing module (45) is located below the rolling conveyor mechanism (43). An electric lifting platform (46) is installed at the bottom of the electric slide (42). The top of the electric lifting platform (46) is connected to the weighing module (45). A support frame is provided on the top of the weighing module (45). The support frame passes through the rolling conveyor mechanism (43). The weighing bucket (44) is placed on the support frame.

4. The automatic weighing system for printing and dyeing powder according to claim 1, characterized in that: A first ring body (68) is connected to the inner wall of the first channel (62) and to one end near the second channel (63). The first ring body (68) has a first inclined portion at one end near the first channel (62). A second ring body (6002) is connected to the inner wall of the second channel (63) and to one end near the cap (64). The second ring body (6002) has a second inclined portion at one end near the second channel (63).

5. The automatic weighing system for printing and dyeing powder according to claim 4, characterized in that: The second channel (63) is equipped with a mesh plate (609) at one end near the cover (64), and a scraper (6001) is inserted through the center of the cover (64), and the scraper (6001) is attached to the side wall of the mesh plate (609).

6. The automatic weighing system for printing and dyeing powder according to claim 1, characterized in that: The top drive assembly (5) includes a bracket (51) mounted on the top of the electric carriage (42), a connecting plate (52) mounted on the inner top wall of the bracket (51), and a first top drive cylinder (53). The piston rod end of the first top drive cylinder (53) is connected to two push rods (54). The bottom of the connecting plate (52) is connected to a second top drive cylinder (55). The piston rod end of the second top drive cylinder (55) is connected to a top frame (56). The bracket (51) is connected to a suspension extending below the connecting plate (52). An electric slide rail (57) is mounted on the bottom of the suspension. A scraper motor (58) is slidably mounted on the bottom of the electric slide rail (57). The output end of the scraper motor (58) and the end of the scraper (6001) away from the cover (64) are both connected to a force transmission plate (59). The two force transmission plates (59) are compatible.

7. An automatic weighing system for printing and dyeing powders according to any one of claims 1-6, characterized in that, The weighing system weighs objects through the following steps: S1. First, at least one set of hopper components (2) can be placed on the top of the workbench (1) as needed. The weighing bucket (44) to be weighed is placed on the electric slide (42). Then, the weighing component (4) is moved as a whole, so that the weighing bucket (44) moves to the position of the corresponding hopper component (2). At the same time, the drive component (3) is moved to the position of the corresponding hopper component (2). Then, the drive component (3) is used to connect with the hopper component (2) and drive the hopper component (2) and the material control component (6) to discharge the material. S2. During the discharge process, the top drive assembly (5) is used to control the second channel (63) and the cover (64) to move away from the first channel (62) as a whole. At this time, the powder falls quickly through the gap between the first channel (62) and the second channel (63), and the powder is weighed synchronously by the weighing module (45). S3. When the powder is about to reach the target weight, the top drive assembly (5) controls the docking of the first channel (62) and the second channel (63), while the cap (64) separates from the second channel (63). The powder slowly falls through the gap between the second channel (63) and the cap (64) until the target weight is reached. S4. After the weighing module (45) finishes weighing, the cover (64) and the second channel (63) are merged and the feeding stops. At this time, the weighing component (4) can be moved to the position of other hopper components (2) to add materials. After all materials are added, the weighing bucket (44) can be taken out.

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