Automatic feeding method of solid raw materials in water reducing agent

Abstract

The present application relates to the field of unpacking and automatic feeding, and particularly discloses an automatic feeding method for solid raw materials in water reducing agent, which comprises the following steps: S0: preparing before feeding, winding the part of the blocking curtain that blocks the entry and exit of the material bag to form an enclosed area; installing a bag opening mechanism with a cutter and a rotator on the feeding port; S1: the material taking suction cup of the material taker sucks the material bag to be fed and transfers the material bag to above the feeding port enclosed by the blocking curtain; S2: controlling the space mover to move so that the material bag is inclined and located above the cutter; S3: the rotator on the bag opening mechanism is started to drive the cutter to rotate by a certain angle, the cutter cuts an arc-shaped opening at the bottom of the material bag after rotation, and the arc-shaped opening faces the middle part of the reaction kettle, and the raw material automatically falls into the reaction kettle after the arc-shaped opening is cut. The present application is used to solve the problems that the existing automatic feeding structure cannot be used when feeding solid raw materials in water reducing agent, manual feeding has high labor intensity and low production efficiency.

Description

Technical Field

[0001] This invention relates to the field of unpacking and automatic feeding technology, specifically to an automated feeding method for solid raw materials in water-reducing agents. Background Technology

[0002] In existing technologies, the material feeding process has achieved a high level of automation, especially in certain industrial fields. Traditional feeding robots can typically perform a series of complex operations, such as dust removal, material picking, cutting, and shaking. These functions help reduce labor costs and improve production efficiency. Such feeding systems generally include a locator capable of moving in three-dimensional space, such as a multi-degree-of-freedom robot / industrial robot or a gantry robot. A picker is installed at the output end of the locator, which has multiple suction cups. The picker lifts the raw material bag using the suction cups and moves the bag along with the locator. The cutter used to cut the raw material bag is either mounted on the picker or directly on the edge of the feeding port. The different installation positions of the cutter are explained below:

[0003] The cutter installed on the feeder is a scheme of an automatic bag opening and feeding device for bagged materials, as described in Chinese Patent Publication No. CN204607032U. In this method, after the raw material bag is transferred to the feeding port, the cutter is driven by the drive machine to cut across the entire bag (i.e., the raw material bag) from the middle. The cut bag allows the material to flow out freely by its own weight.

[0004] The solution where the cutter is directly fixed to the edge of the feeding port is shown in Chinese Patent Publication No. CN113233214A, filed in 2021, which describes an intelligent dustproof unpacking and quantitative feeding system. In this feeding system, when the bag is opened, the spatial mover drives the bag to slide in a straight line across the center of the bottom of the bag, and the raw material inside the opened bag falls freely out under gravity.

[0005] After the raw materials in the bag have mostly fallen, it is necessary to use a shaking method to discharge as much raw material as possible from the bag. This shaking function is achieved by the shaking device on the feeder or by controlling the left, right and forward and backward shaking of the output end of the space mover to shake off the raw materials located in the corners of the bag.

[0006] However, in specific application scenarios, such as the production process of water-reducing agents, existing automated feeding systems cannot fully meet the needs due to environmental protection requirements and the special properties of solid raw materials (mainly modified polyether).

[0007] Specifically, the production of water-reducing agents involves adding solid raw materials (modified polyether) into a reactor and mixing them with deionized water to prepare a macromonomer aqueous solution. To ensure the quality of the final product, the time the polyether is exposed to air must be minimized. Therefore, the modified polyether raw materials often need to be transported to the vicinity of the feeding port before being opened and fed. Simultaneously, for environmental reasons, the feeding process requires the continuous operation of a negative pressure dust collector directly above the feeding port to promptly remove exhaust gas and dust generated within the reactor. To ensure the quality of the negative pressure dust collector's suction and to ensure timely removal of exhaust gas and dust, multiple transparent curtains are placed around the suction pipe of the negative pressure dust collector. These curtains enclose the feeding port, creating a connection between the reactor's feeding port and the negative pressure suction pipe, facilitating precise suction. The presence of these curtains further reduces the space available for mechanical equipment movement above the already narrow feeding port. However, the feeding process will roll up or push open some of the shielding curtains, but the presence of the remaining shielding curtains still makes the space above the feeding port much smaller than the area required by the existing automatic feeding system. If the current method is used, the material bag length will be greater than the projection diameter of the feeding port onto the horizontal plane, resulting in the material scattering outside the feeding port. If the bottom cut of the material bag is too small, the material discharge will be slow and there will be a large amount of material residue inside the bag. Even if it is shaken, it will not be able to shake out due to the small cut. In addition, the shielding curtain hanging around the feeding port also limits the amplitude of the material bag shaking.

[0008] Therefore, neither robotic arms with built-in cutters nor cutters fixed at the edge of the feeding port are suitable for automated feeding under conditions of size limitations and suction requirements at the feeding port. Thus, manual feeding is still the current practice. However, in current water-reducing agent production, the amount of modified polyether required in each reactor is calculated in the tons. With each bag weighing 25 kg, each feeding of modified polyether involves high labor intensity and low production efficiency. Summary of the Invention

[0009] The present invention aims to provide an automated feeding method for solid raw materials in water-reducing agents, so as to solve the problems that existing automated feeding structures cannot be used when feeding solid raw materials in water-reducing agents, while manual feeding is labor-intensive and has low production efficiency.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An automated feeding method for solid raw materials in a water-reducing agent includes the following steps:

[0012] S0: Preparations before feeding: Roll up part of the shielding curtain that forms an enclosed area by multiple shielding curtains that block the material bag from entering and exiting, so that the rollup of this part of the shielding curtain does not affect the entry and exit of the material bag; and install a bag opening mechanism with a cutter and a rotator on the feeding port.

[0013] S1: The material picker's suction cup picks up the material bag to be fed, and the space mover moves the material picker and the material bag to the feeding port enclosed by the curtain.

[0014] S2: Control the movement of the space mover so that the bag is tilted and positioned above the cutter;

[0015] S3: The rotator on the bag opening mechanism starts, driving the cutter to rotate at a certain angle. The plane on which the cutter rotates forms an angle with the horizontal plane. After the cutter rotates, it cuts an arc-shaped opening at the bottom of the bag, and the arc-shaped opening faces the middle of the reactor. After the arc-shaped opening is cut, the raw material automatically falls into the reactor.

[0016] The principle and advantages of this scheme are as follows: When the bag is cut open, the cutter no longer moves relative to the length of the bag as before. Instead, the cutter moves in an arc or circle driven by a rotator. Driven by the rotator, the cutter cuts an arc-shaped opening at the bottom of the bag. On the one hand, this realizes automatic bag opening and feeding in a confined space. Moreover, the cutter is located inside the feeding port, ensuring that the raw materials can fall into the reactor quickly. In addition, the tilt of the bag during feeding and the arc-shaped opening facing the middle of the reactor also have a blocking effect on the upward-blowing dust, which can reduce the probability of dust being generated outside the reactor and contribute to environmental protection.

[0017] In addition, the arc-shaped opening cut by the cutter can be directly cut at the bottom of the material bag and its width is close to that of the material bag, thus ensuring that the raw materials in the material bag can be discharged relatively cleanly, reducing or even eliminating the need for subsequent material shaking.

[0018] Preferably, as an improvement, the bag opening mechanism further includes a shaking component with multiple circumferentially arranged elastic struts. The shaking component is connected to the output shaft of the rotator by a connection structure that can automatically connect or disconnect. In step S2, when the spatial mover moves the bag above the cutter, the bag is also placed on the elastic struts.

[0019] Preferably, as an improvement, in step S3, when the rotator drives the cutter to cut and open the bag, the connecting structure is disconnected, and the shaking component only serves as a support for the bag. After the arc-shaped opening is cut, the connecting structure is reconnected. The method also includes step S4: after step S3 is completed, the rotator is started, and the output shaft of the rotator swings back and forth, so that the multiple elastic support rods of the shaking component hit the bottom of the bag to achieve shaking.

[0020] Preferably, as an improvement, the material shaking assembly further includes a mounting column rotatably connected to the output shaft of the rotator, multiple elastic support rods distributed circumferentially along the mounting column, each elastic support rod including a support part and a sliding part perpendicular to each other, the support part being used to contact the bottom of the material bag, the sliding part being arranged radially along the output shaft of the rotator and slidably connected to the mounting column in the radial direction, an elastic element being provided between the support rod and the mounting column to push the support rod outward, and the distance between the support part and the rotation axis is less than the distance between the cutter and the rotation axis.

[0021] Preferably, as an improvement, the connection structure includes a resilient insert rod mounted on a mounting post and a chuck fixed to the output shaft of the rotator. The resilient insert rod can be inserted into a slot on the chuck under elastic force. There are at least two slots, and all slots are circumferentially distributed about the output shaft of the rotator.

[0022] Preferably, as an improvement, the resilient insert includes a slide rod slidably connected radially to the mounting post, a spherical top fixed to the free end of the slide rod, and a spring for pushing the slide rod toward the center of rotation.

[0023] Preferably, as an improvement, the bag opening mechanism further includes a linear driver, which drives the rotator to move along the rotation axis, and the support is parallel to the rotation axis.

[0024] Preferably, as an improvement, the cutter is fixed to the output shaft of the rotator via a connecting rod, and an extension rod is fixed to the free end of the connecting rod. The mounting part of the cutter is recessed into the connecting rod, and the extension rod is close to the back of the cutter. After the bag is opened in step S3, the linear driver is controlled to move the rotator so that the extension rod and the cutter are located below the bag and do not contact the bag. In step S4, when shaking the bag, the swing angle of the connecting rod is controlled by the rotator so that the extension rod can hit the corner of the bag to further ensure that the bag is completely shaken clean.

[0025] Preferably, as an improvement, the bag opening mechanism is detachably mounted on the flange of the feeding port via a mounting base, and the mounting base and the bag opening mechanism can be directly detached from the feeding port after feeding is completed in a reactor.

[0026] Preferably, as an improvement, the feeder is equipped with a feeding frame, and the feeding frame is fixed with an outwardly protruding pointed structure, which is used to push open the shielding curtain hanging above the feeding port with its pointed tip.

[0027] The present invention also has the following technical effects:

[0028] 1. The bag opening mechanism of this solution can not only open the bag using a cutter, but also use the material shaking component set on the bag opening mechanism. On the one hand, it supports the bag before the bag opening is completed, preventing the material suction cup from being unstable due to the bag tilting. On the other hand, the material shaking component can shake the material in time after feeding to reduce the residue of raw materials in the bag.

[0029] 2. The present invention ensures through the connection structure that the shaking component will only rotate with the output shaft of the rotator to beat the material bag when shaking is required. When the material bag presses down on the shaking component, the rotation of the cutter driven by the rotator will not cause the shaking component to rotate, thereby ensuring the stable support of the material bag by the shaking component before the material bag is fed.

[0030] 3. The linear drive and extension rod configuration allows the cutter and connecting rod to move under the material bag during the material's descent, preventing the material from impacting the cutter and connecting rod. The extension rod can also be used to tap the corners of the material bag, further reducing the amount of residual material inside the bag.

[0031] 4. The pointed structure on the material picker ensures that the material bag and the material picker can smoothly enter the enclosed space of the curtain when the material picker moves the material bag into the enclosed space of the curtain.

[0032] 5. This invention enables automatic feeding of reaction vessels in confined spaces, and can also feed other reaction vessels in the same way after the mounting base and bag opening mechanism are transferred, which helps to improve feeding efficiency, reduce equipment procurement costs, and increase the utilization rate of automated feeding equipment. Attached Figure Description

[0033] Figure 1 This is a flowchart of Embodiment 1 of the present invention.

[0034] Figure 2 This is a three-dimensional structural schematic diagram of the automatic feeding device for solid raw materials in the water-reducing agent used in Embodiment 1 of the present invention (a shielding curtain is in a rolled-up state in the figure, but the rolled-up state is not shown in the figure; only the moving path of the feeder is shown without the shielding curtain blocking it).

[0035] Figure 3 for Figure 2 The middle section is a three-dimensional structural diagram showing the material picker tilting the bag into position and waiting for it to open. The lower part of the shielding curtain has been removed from the diagram.

[0036] Figure 4 for Figure 3 A partial front view showing the flange and mounting base in section.

[0037] Figure 5 for Figure 4 A magnified view of a portion of the image.

[0038] Figure 6 for Figure 3 The image in the center is a three-dimensional structural diagram of the space mover, material picker, mounting base, and bag opening mechanism.

[0039] Figure 7 for Figure 6 A partial front view.

[0040] Figure 8 for Figure 7 A schematic diagram of the three-dimensional structure after rotation at a certain angle.

[0041] Figure 9 for Figure 7 A schematic diagram of the three-dimensional structure after rotating another angle.

[0042] Figure 10 for Figure 8 A-direction view.

[0043] Figure 11 for Figure 10 View B.

[0044] Figure 12 for Figure 11 CC section view in the image.

[0045] Figure 13 This is a schematic diagram of the cutter position before and after the bag is opened, and a schematic diagram of the arc-shaped opening of the bag, according to Embodiment 1 of the present invention.

[0046] Figure 14 This is a three-dimensional structural diagram of Embodiment 2 of the present invention. Detailed Implementation

[0047] The following detailed description illustrates the specific implementation methods:

[0048] The reference numerals in the accompanying drawings include: flange 10, mounting hole 101, material bag 100, shielding curtain 20, space mover 1, track 11, material picker 2, material picker rack 21, connecting plate 211, mounting plate 212, tip structure 2121, guide rod 213, material picker suction cup 22, mounting base 3, positioning pin 31, anti-tilting protrusion 32, bag opening mechanism 4, linear actuator 41, rotator 42, chuck 421, slot 4211, material shaking assembly 43, mounting column 431, fixing sleeve 4311, support rod 432, support part 4321, connecting rod 44, extension rod 441, cutter 45, insertion rod 46, slide rod 461, spherical top 462, and cutter cutting path 200.

[0049] Example 1 is basically as shown in the attached document. Figures 1 to 13 As shown.

[0050] An automated feeding method for solid raw materials in a water-reducing agent requires an automated feeding device for solid raw materials in the water-reducing agent. The automated feeding device for solid raw materials in the water-reducing agent includes a space mover 1, a feeder 2 installed at the output end of the space mover 1, a mounting base 3 inserted into the feeding port, and a bag opening mechanism 4 fixed on the mounting base 3. In this embodiment, the space mover 1 is an industrial robot. The space mover 1 is used to drive the feeder 2 to transfer the material bag 100 from the waiting area to the feeding port. The feeder 2 is used to hold the material bag 100 to facilitate the transfer of the material bag 100. The bag opening mechanism 4 is used to cut the material bag 100 to facilitate the flow of raw materials from the material bag 100.

[0051] Specifically as follows:

[0052] I. Space Mobile Device 1

[0053] The space mover 1 is an industrial robot. The output arm of the industrial robot can rotate to make the horizontally lifted bag 100 tilted. When tilted, the length direction of the bag 100 forms an angle with the horizontal plane.

[0054] The space mover 1 is mounted on the track 11, which is mounted on the working platform 1000. The working platform 1000 is located near the top of the reactor to feed material into the feeding port. The space mover 1 can move along the track 11. There are two or more reactors, and all reactors are located next to the track 11. The feeding ports of all reactors are exactly the same distance from the track 11 and face the same direction. This allows the feeding needs of multiple reactors to be met by moving one space mover 1 and transferring the mounting base 3 and the bag opening mechanism 4 on the reactor, thereby reducing costs.

[0055] II. Feeder 2

[0056] The feeder 2 includes a feeder frame 21 and multiple feeder suction cups 22 installed below the feeder frame 21. The feeder frame 21 includes a connecting plate 211 and a mounting plate 212. The connecting plate 211 is fixedly connected to the output arm of the space mover 1. The mounting plate 212 is connected to the connecting plate 211 by a guide rod 213. One end of the guide rod 213 is fixed to the mounting plate 212, and the other end of the guide rod 213 is slidably connected to the connecting plate 211. A spring is sleeved on the guide rod 213. One end of the spring abuts against the connecting plate 211, and the other end abuts against the mounting plate 212. The mounting plate 212 has an integrally formed outwardly protruding pointed structure 2121. The pointed structure is used to push open the shielding curtain 20 hanging above the feeding port with the pointed tip.

[0057] Multiple suction cups are mounted on mounting plate 212.

[0058] When the material picker 2 picks up the material bag 100, the space mover 1 drives the material picker 2 to approach the material bag 100. The suction cups on the material picker 2 press against the upper surface of the material bag 100. The space mover 1 drives the material picker 2 to continue pressing downwards, so that all the suction cups are adsorbed. Then the space mover 1 is activated to drive the material bag 100 to transfer.

[0059] III. Mounting base 3 and bag opening mechanism 4

[0060] The feed port of the reactor is integrally formed with a flange 10. The flange 10 has multiple evenly distributed mounting holes 101 around its circumference. The flange 10 can be used to cover the feed port when it is not in use for feeding.

[0061] The bottom of the mounting base 3 is fixed with a positioning pin 31 and an anti-tilting protrusion 32. The positioning pin 31 is used to insert into the mounting hole 101 of the flange 10, and the anti-tilting protrusion 32 is used to abut against the outer periphery of the flange 10. The side of the anti-tilting protrusion 32 that mates with the flange 10 is an arc surface, so that the accuracy of the installation position of the bag opening mechanism 4 can be ensured each time the mounting base 3 is moved.

[0062] The bag opening mechanism 4 is fixed on the mounting base 3, and part of the structure of the bag opening mechanism 4 extends into the feeding port.

[0063] The bag opening mechanism 4 includes a linear driver 41, a rotator 42, a material shaking assembly 43, and a connecting rod 44 arranged along the axis. The linear driver 41 is fixed on the mounting base 3 and drives the rotator 42 to move closer to or away from the center of the feeding port. The material shaking assembly 43 is mounted on the output shaft of the rotator 42. The connecting rod 44 is fixed to the end of the output shaft of the rotator 42 and is arranged radially along the output shaft of the rotator 42. A cutter 45 mounting groove is opened at the end of the connecting rod 44 away from the rotation center, and the mounting part of the cutter 45 is recessed into the cutter. Inside the mounting slot 45, the free end of the connecting rod 44 is welded with an extension rod 441 that extends outward. The extension rod 441 is close to the back of the cutter 45 and away from the opening of the mounting slot of the cutter 45, so that there is enough space on the connecting rod 44 to fix the cutter 45, which is clamped in the mounting slot of the cutter 45, with screws. The extension rod 441 is used to move under the material bag 100 under the drive of the linear mover, and then tap the end corner of the material bag 100 under the drive of the rotary 42, so as to further ensure that the material bag 100 is completely shaken clean.

[0064] The bag opening mechanism 4 is inserted into the mounting hole 101 at the lowest position of the flange 10 along with the mounting base 3. The output shaft of the linear drive 41 and the output shaft of the rotary 42 are inclined relative to both the horizontal plane and the feeding port, so that the movement trajectory of the cutter 45 driven by the rotary 42 has a certain angle relative to the horizontal plane. As a result, after the cutter 45 cuts the bag 100, an arc-shaped opening is generated at the bottom of the inclined bag 100, and the arc-shaped opening faces the middle of the reactor.

[0065] The shaking assembly 43 includes a mounting post 431 rotatably connected to the output shaft of the rotator 42 via a bearing, and multiple support rods 432 slidably connected to the mounting post 431. An elastic insert rod 46 is mounted on the mounting post 431. A chuck 421 is fixed on the output shaft of the rotator 42. The elastic insert rod 46 can be inserted into a slot 4211 on the chuck 421 under elastic force. There are two slots 4211, which are symmetrically arranged about the output shaft of the rotator 42. The elastic insert rod 46 includes a slide rod 461 slidably connected to the mounting post 431 in the radial direction, a spherical top 462 fixed to the free end of the slide rod 461, and a spring for pushing the slide rod 461 toward the rotation center. A fixing sleeve 4311 is fixed on the mounting post 431. The slide rod 461 is slidably connected inside the fixing sleeve 4311. One end of the spring of the elastic insert rod 46 abuts against the bottom of the fixing sleeve 4311, and the other end abuts against the top of the slide rod 461. The flexible insert rod 46 and the chuck 421 with a slot 4211 are configured such that when the mounting post 431 is difficult to rotate due to external force, the rotation of the output shaft of the rotator 42 can cause the chuck 421 to rotate and push the insert rod 46 out of the slot 4211; when the mounting post 431 is not under external force or is under little external force, the insert rod 46 is inserted into the slot 4211, which facilitates the vibration component to be integrated with the chuck 421 and rotate synchronously with the output shaft of the rotator 42.

[0066] Multiple support rods 432 are evenly distributed along the rotation axis. Each support rod 432 includes a T-shaped support portion 4321 and a sliding portion that are connected as a whole and perpendicular to each other. The support portion 4321 is used to contact the bottom of the material bag 100. The support portion 4321 is parallel to the rotation axis of the rotator 42 and has a supporting arc surface to provide a larger contact area with the material bag 100. The sliding portion is radially arranged along the output shaft of the rotator 42 and is radially slidably connected to the mounting post 431. An elastic element is provided between the support rod 432 and the mounting post 431 to push the support rod 432 outward. This elastic element is a spring fitted in the sliding portion. One end of the spring abuts against the support portion 4321, and the other end abuts against the outer peripheral surface of the mounting post 431. This spring keeps the support rod 432 tending to push outward. The distance between the support portion 4321 and the rotation axis is less than the distance between the cutter 45 and the rotation axis.

[0067] To ensure the stability of the movement of the linear actuator 41 driving the rotary actuator 42, the material shaking assembly 43, the connecting rod 44, and the cutter 45, a slide rail is fixed on the mounting base 3. The housing of the rotary actuator 42 is fixed on the slider, and the slider is slidably connected to the slide rail. The slide rail is parallel to the output direction of the linear actuator 41. In this embodiment, the linear actuator 41 is an electric cylinder, and the rotary actuator 42 is a servo motor capable of controlling forward and reverse rotation.

[0068] In this embodiment, there are multiple shielding curtains 20 enclosing the feeding port. The channel formed by the multiple shielding curtains 20 connects one end to the feeding port and the other end to the negative pressure dust removal equipment. To ensure automatic and rapid feeding by the automatic feeding device in this embodiment and to maximize the negative pressure dust removal effect, the shielding curtains 20 are made transparent for easy observation, and the material of the shielding curtains 20 is made of soft material to facilitate rolling up, lifting, or pushing the shielding curtains 20.

[0069] This embodiment also discloses an automated feeding method for solid raw materials in water-reducing agents, including the following steps:

[0070] S0: Preparations before feeding include installing the bag opening mechanism 4 on the feeding port. Specifically, the positioning pin 31 on the mounting base 3 with the bag opening mechanism 4 is inserted into the mounting hole 101 at the lowest end of the feeding port, so that the side of the anti-tilting protrusion 32 is in contact with the outer periphery of the flange 10. After installation, the output axial extension of the linear drive 41 and the rotation of the rotator 42 are controlled so that the support rod 432 can be used to support the bag 100 and the cutter 45 is lower than the top support rod 432.

[0071] The S0 step also includes processing the shielding curtain 20: rolling up one or two shielding curtains 20 that block the material bag 100 from entering and exiting the area enclosed by the shielding curtain 20, so that the shielding curtain 20 does not affect the entry and exit of the material bag 100. After the one or two shielding curtains 20 are rolled up, it provides convenience for the material taker 2 to enter and exit the space enclosed by the remaining unrolled shielding curtains 20.

[0072] S1: The material picker 2 uses the material picker suction cup 22 to pick up the material bag 100 to be fed, and the material picker 2 and the material bag 100 are moved to the upper part of the feeding port surrounded by the shielding curtain 20 by the space mover 1.

[0073] S2: Control the space mover 1 to move so that the bag 100 is tilted above the cutter 45. In this step, the bag 100 can be placed on the elastic support rod 432 of the bag opening mechanism 4, so that the support rod 432 on the shaking assembly 43 also participates in supporting the bag 100.

[0074] S3: The rotator 42 on the bag opening mechanism 4 is activated, causing the cutter 45 to rotate at a certain angle. The plane along the rotation trajectory of the cutter 45 forms an angle with the horizontal plane. After rotating, the cutter 45 cuts an arc-shaped opening at the bottom of the bag 100, with the arc-shaped opening facing the center of the reactor. After the bag 100 is cut, the raw material falls rapidly from inside the bag 100.

[0075] In step S3, the maximum width of the arc-shaped opening is close to the width of the material bag 100. For example, the maximum width of the arc-shaped opening is not less than 65% of the width of the material bag 100, so that the raw material falls faster after the material bag 100 is opened.

[0076] In step S3, after the cutter 45 opens the bag 100, the linear actuator 41 drives the connecting rod 44 and the cutter 45 to hide under the bag 100, preventing the falling raw material from continuously impacting the connecting rod 44 and the cutter 45. Due to the long strip support part 4321 of the support rod 432, even if the linear actuator 41 drives the shaking component and the connecting rod 44 to retract towards the outside of the reactor, the support part 4321 of the support rod 432 still forms a contact support for the bag 100.

[0077] In step S3, after the cutter 45 finishes cutting the bag, the elastic rod 46 on the shaking assembly 43 is inserted back into the chuck 421.

[0078] After step S3 is completed, the linear drive 41 is controlled to drive the rotator 42 to move so that the extension rod 441 and the cutter 45 are located below the material bag 100 and do not contact the material bag 100.

[0079] S4: Shaking material. After step S3 is completed, start the rotator 42 and make the output shaft of the rotator 42 swing back and forth, so that the multiple support rods 432 of the shaking material component 43 hit the bottom of the material bag 100 to achieve shaking material.

[0080] In step S4, when the output shaft of the rotator 42 rotates, the extension rod 441 at the end of the connecting rod 44 located below the material bag 100 can also hit the corner of the material bag 100 by controlling the swing angle, so that the shaking is more thorough and the residual amount of raw material in the material bag 100 is reduced.

[0081] S5: After completing step S4, the space mover 1 will transfer the used material bag 100 out of the feeding port, and repeat S1-S4 until the feeding weight reaches the requirement.

[0082] In this embodiment, by setting a pointed structure on the material feeding rack 21 and setting the cutter 45 of the bag opening mechanism 4 on the feeding port, the automatic pushing of the shielding curtain 20 by the material feeder 2 and the bag opening operation in a narrow space are realized. This enables the automated feeding of solid raw materials of water-reducing agent that are limited in space and need to be shielded by the shielding curtain 20, which can solve the problems of high labor intensity and low production efficiency of manual feeding.

[0083] Furthermore, the cutter 45 of the bag opening mechanism 4 no longer moves relative to the length of the bag 100 as before. Instead, the cutter 45, driven by the rotator 42, moves in an arc or circle. Driven by the rotator 42, the cutter 45 cuts an arc-shaped opening at the bottom of the bag 100. On the one hand, this enables bag opening in a confined space. On the other hand, the cutter 45 is located inside the feeding port, ensuring that the raw materials can fall into the reactor quickly. In addition, the tilt of the bag 100 during feeding and the arc-shaped opening facing the center of the reactor also block the upward-blowing dust, reducing the probability of dust being generated outside the reactor and contributing to environmental protection.

[0084] In addition, the material shaking component 43 of the bag opening mechanism 4 can be used to support the bag 100 with raw materials, and can also directly act on the bottom of the empty bag 100. In addition, the extension rod 441 on the connecting rod 44 directly acts on the corner of the bag 100 where raw materials are easily left to shake the material, ensuring that the amount of residue in the bag 100 is lower.

[0085] In addition, the bag opening mechanism 4 is set on the mounting base 3, and the mounting base 3 can be directly inserted into the flange 10 of the existing reactor feeding port, making the transfer of the mounting base 3 and the bag opening mechanism 4 simple and convenient. After the transfer, the installation can be simple and quick, which facilitates the automatic and rapid feeding of multiple reactors using the same set of automatic feeding devices, and helps to reduce equipment costs while improving feeding efficiency.

[0086] Example 2

[0087] This embodiment's improvement is based on the fact that the reactors in actual production are quite tall, around 4 meters, and the feed inlet is located at the top. Therefore, the working platform 1000 is often built near the top of the reactor. Solid raw material storage is usually on the first floor, so the raw materials need to be transported to the working platform 1000. Building upon Embodiment 1, the stacked material packages on the first floor can be transported to the working platform 1000 via a freight elevator and placed next to the space mover 1 for easy access by the material handler 2 installed on the space mover 1. Alternatively, the following feeding method can also be used:

[0088] Combination Figure 14 An automatic feeding system for solid raw materials in a water-reducing agent is disclosed. It includes the automatic feeding device for solid raw materials in a water-reducing agent as described in Example 1, and also includes a feeding line 5. The feeding line 5 is used to transport the material bag 100. The feeding line 5 is belt driven and can extend from the first floor to the working platform 1000. The attached drawings only show a portion of the feeding line 5 located on the working platform 1000. A powder shaper 7 and a dust removal roller 6 are installed sequentially along the feeding direction on the feeding line 5 of the working platform 1000. The powder shaper 7 is used to level the uneven material bag 100, and the dust removal roller 6 is used to clean the dust on the surface of the material bag 100.

[0089] In this embodiment, the powder shaper 7 levels the uneven material bags 100 on the feeding line 5, ensuring that the suction cups 22 can act on essentially the same plane when picking up material. The dust removal roller 6 cleans the dust on the material bags 100, thus ensuring that the upper surface of the material bags 100 is clean and tidy, and that the suction cups 22 can firmly hold the material bags 100. In addition, the dust removal roller is set on the feeding line 5. The material bags 100 are automatically dusted after being conveyed by the feeding line 5. There is no need to set a dust removal structure on the feeder 2, ensuring that the feeder 2 has a simple structure. This makes it easier for the bottom of the material bags 100 to extend further into the feeding port after being fed into the feeding port, which helps to reduce the situation of dust overflowing during the feeding process.

[0090] In addition, in actual operation, the feeder 2 can put the material bag 100 that has been fed into the feeding line 5 again, and use the space robot to press it down during placement to ensure that the empty material bag 100 is flat, which facilitates the stacking of the empty material bags 100 after they are output from the feeding line 5.

[0091] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automated feeding method for solid raw materials in a water-reducing agent, characterized in that, Includes the following steps: S0: Preparations before feeding: Roll up part of the shielding curtain that forms an enclosed area by multiple shielding curtains that block the material bag from entering and exiting, so that the rollup of this part of the shielding curtain does not affect the entry and exit of the material bag; and install a bag opening mechanism with a cutter and a rotator on the feeding port. S1: The material picker's suction cup picks up the material bag to be fed, and the space mover moves the material picker and the material bag to the feeding port enclosed by the curtain. S2: Control the movement of the space mover so that the bag is tilted and positioned above the cutter; S3: The rotator on the bag opening mechanism starts, driving the cutter to rotate at a certain angle. The plane on which the cutter rotates is at an angle to the horizontal plane. After the cutter rotates, it cuts an arc-shaped opening at the bottom of the bag, and the arc-shaped opening faces the middle of the reactor. After the arc-shaped opening is cut, the raw material automatically falls into the reactor. The bag opening mechanism also includes a shaking component, which has multiple circumferentially arranged elastic struts. The shaking component is connected to the output shaft of the rotator by a connection structure that can automatically connect or disconnect. In step S2, when the space mover moves the bag above the cutter, it also places the bag on the elastic struts. In step S3, when the rotator drives the cutter to cut and open the bag, the connecting structure is disconnected, and the shaking component only serves as a support for the bag. After the arc-shaped opening is cut, the connecting structure is reconnected.

2. The automated feeding method for solid raw materials in a water-reducing agent according to claim 1, characterized in that: It also includes step S4: After step S3 is completed, the rotator is started, and the output shaft of the rotator swings back and forth, so that the multiple elastic struts of the shaking component hit the bottom of the material bag to achieve shaking.

3. The automated feeding method for solid raw materials in a water-reducing agent according to claim 2, characterized in that: The material shaking assembly also includes a mounting column rotatably connected to the output shaft of the rotator, and multiple elastic support rods distributed circumferentially along the mounting column. Each elastic support rod includes a support part and a sliding part that are perpendicular to each other. The support part is used to contact the bottom of the material bag, and the sliding part is arranged radially along the output shaft of the rotator and is slidably connected to the mounting column in the radial direction. An elastic element is provided between the support rod and the mounting column to push the support rod outward. The distance between the support part and the rotation axis is less than the distance between the cutter and the rotation axis.

4. The automated feeding method for solid raw materials in a water-reducing agent according to claim 2, characterized in that: The connection structure includes a flexible insert rod mounted on a mounting post and a chuck fixed on the output shaft of the rotator. The flexible insert rod can be inserted into a slot on the chuck under elastic force. There are at least two slots, and all slots are circumferentially distributed about the output shaft of the rotator.

5. The automated feeding method for solid raw materials in a water-reducing agent according to claim 4, characterized in that: The resilient insert includes a slide rod that is radially slidably connected to the mounting post, a spherical top fixed to the free end of the slide rod, and a spring for pushing the slide rod toward the center of rotation.

6. The automated feeding method for solid raw materials in a water-reducing agent according to claim 3, characterized in that: The bag opening mechanism also includes a linear actuator, which drives the rotator to move along the rotation axis, and the support part is parallel to the rotation axis.

7. The automated feeding method for solid raw materials in a water-reducing agent according to claim 6, characterized in that: The cutter is fixed to the output shaft of the rotator via a connecting rod. An extension rod is fixed to the free end of the connecting rod. The mounting part of the cutter is recessed into the connecting rod, and the extension rod is close to the back of the cutter. After the bag is opened in step S3, the linear drive is controlled to move the rotator so that the extension rod and the cutter are located below the bag and do not contact the bag. In step S4, when shaking the bag, the swing angle of the connecting rod is controlled by the rotator so that the extension rod can hit the corner of the bag.

8. An automated feeding method for solid raw materials in a water-reducing agent according to any one of claims 1-7, characterized in that: The bag opening mechanism is detachably mounted on the flange of the feeding port via a mounting base. After feeding is completed in a reactor, the mounting base and the bag opening mechanism can be directly detached from the feeding port.

9. An automated feeding method for solid raw materials in a water-reducing agent according to any one of claims 1-7, characterized in that: The feeder is equipped with a feed rack, and the feed rack is fixed with an outwardly protruding pointed structure, which is used to push open the shielding curtain hanging above the feed port with its pointed tip.

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