Automatic feeding method for solid raw materials in water reducing agent

Abstract

The invention relates to the field of unpacking and automatic feeding, and particularly discloses an automatic feeding method for solid raw materials in a water reducing agent, which comprises the following steps: S0, preparation work before feeding: a part of shielding curtains for preventing a material bag from entering and exiting an enclosed area formed by a plurality of shielding curtains are rolled; a bag opening mechanism with a cutter and a rotator is mounted on the feeding port; the method comprises the steps that S1, a material taking suction cup of a material taking device sucks a material bag to be fed, and the material bag is transferred to the position above a feeding opening defined by a shielding curtain; s2, a space mover is controlled to move, so that the material bag is inclined and located above the cutter; and S3, a rotator on the bag opening mechanism is started, a cutter is driven to rotate by a certain angle, an arc-shaped opening is cut in the bottom of the material bag after the cutter rotates, the arc-shaped opening faces the middle of the reaction kettle, and after the arc-shaped opening is cut open, the raw materials automatically fall into the reaction kettle. According to the scheme, the problems that an existing automatic feeding structure cannot be used during feeding of solid raw materials of the water reducing agent, and manual feeding is high in labor intensity and low in production efficiency are solved.

Description

Technical Field

[0001] The invention relates to the technical field of unpacking and automatic feeding, and in particular to an automatic feeding method for solid raw materials in a water reducing agent. Background Art

[0002] In the prior art, the feeding process has achieved a high level of automation, especially in some industrial fields. Traditional feeding manipulators are usually able to perform a series of complex operations, such as dust sweeping, material picking, cutting and shaking, etc. These functions help to reduce labor costs and improve production efficiency. This feeding system generally includes a mover that can move in three-dimensional space, such as a multi-degree-of-freedom robot / industrial robot or a truss manipulator. A feeder is installed at the output end of the space mover. The feeder has multiple suction cups. The raw material bag is lifted by the suction cups on the feeder, and the raw material bag is moved under the drive of the space mover. The cutter used to cut the raw material bag is installed on the feeder or directly on the edge of the feeding port. The different installation positions of the cutter are explained separately below:

[0003] The cutter installed on the feeder is a solution of an automatic bag opening and feeding device for bagged materials with Chinese patent announcement number CN204607032U. In this way, after the raw material bag is transferred to the feeding port, the bag opening cutter is driven by the driving machine to cut across the entire material bag from the middle of the material bag (that is, the raw material bag), and the cut material bag allows the material to flow out freely by its own gravity.

[0004] The solution in which the cutter is directly fixed on the edge of the feeding port is shown in the intelligent dust-proof unpacking and quantitative feeding system with Chinese patent publication number CN113233214A applied for in 2021. When opening the bag, the space mover drives the bag to slide straight across the center of the bottom of the bag, and the raw materials in the opened bag fall freely under gravity.

[0005] After the raw materials in the bag have basically fallen, it is necessary to use shaking to discharge the raw materials in the bag as much as possible. This shaking function is achieved by the shaking device on the feeder or by controlling the left and right, front and back shaking of the output end of the space mover to shake off the raw materials in the corners of the bag.

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

[0007] Specifically, the production of water reducers involves feeding solid raw materials (modified polyethers) into a reactor and mixing them with deionized water in the reactor to prepare a large monomer aqueous solution. In order to ensure the quality of the final product, the time that the polyether is exposed to the air must be minimized, so the modified polyether raw materials often need to be transported to the vicinity of the feeding port before opening the bag for feeding. At the same time, for environmental protection reasons, the feeding process requires the negative pressure dust removal equipment directly above the feeding port to work continuously to promptly extract the waste gas and dust generated in the reactor. In order to ensure the quality of the suction of the negative pressure dust removal equipment and to ensure that the waste gas and dust are promptly extracted, a plurality of shielding curtains made of transparent materials are enclosed on the suction pipe of the negative pressure dust removal equipment. The plurality of shielding curtains enclose the feeding port so that the feeding port of the reactor is connected to the negative pressure suction pipe, which facilitates the precise suction of the negative pressure suction pipe. The presence of the shielding curtain makes the space available for the movement of mechanical equipment above the already narrow feeding port smaller. Although Although part of the shielding curtain will be rolled up or pushed away during the feeding process, the existence of the remaining shielding curtain 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 raw materials will be scattered outside the feeding port because the length of the material bag is greater than the projection diameter of the feeding port on the horizontal plane, and if the incision at the bottom of the material bag is cut small, the material discharge will be slow and the amount of raw material remaining in the bag will be large. Even if it is shaken out, it will not be shaken out due to the small incision; in addition, the limitation of the shielding curtain hanging on the outer periphery of the feeding port also limits the shaking amplitude of the material bag.

[0008] Therefore, neither the cutter provided by the manipulator nor the cutter fixed at the edge of the feeding port is suitable for automatic feeding under the size restriction and feeding port suction requirement. Therefore, the current situation is still to feed manually, and the amount of modified polyether required to be added to each reactor in the current water reducer production is calculated in tons. When the weight of each bag is 25kg, each feeding of modified polyether is accompanied by high labor intensity and low production efficiency. Summary of the invention

[0009] The present invention aims to provide an automatic feeding method for solid raw materials in a water reducer, so as to solve the problem that the existing automatic feeding structure cannot be used when feeding the solid raw materials of the water reducer, and the manual feeding has high labor intensity and low production efficiency.

[0010] In order to achieve the above object, the present invention adopts the following technical scheme:

[0011] An automatic feeding method for solid raw materials in a water reducing agent comprises the following steps:

[0012] S0: Preparation work before feeding, rolling up part of the shielding curtains that block the material bags from entering and exiting the enclosed area formed by multiple shielding curtains, until the shielding curtains are rolled up to the part that does not affect the entry and exit of the material bags; and installing a bag opening mechanism with a cutter and a rotator on the feeding port;

[0013] S1: The material taking suction cup of the material taking device takes up the material bag to be fed, and drives the material taking device and the material bag to move to the top of the feeding port enclosed by the shielding curtain through the space mover;

[0014] S2: Control the space mover to move so that the bag is tilted and located above the cutter;

[0015] S3: The rotator on the bag opening mechanism starts, driving the cutter to rotate at a certain angle. The plane where the moving track of the cutter is located is at an angle to the horizontal plane. After the cutter rotates, an arc-shaped opening is cut 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 materials automatically fall into the reactor.

[0016] The principle and advantage of this scheme are: when cutting and opening the bag, the cutter no longer moves in the relative length direction of the bag as before, but is driven by a rotator to make an arc or circular movement. The cutter cuts an arc-shaped opening at the bottom end of the bag driven by the rotator. On the one hand, automatic bag opening and feeding in a narrow space are realized, and the bag opening cutter is located in the feeding port to ensure that the raw materials can quickly fall into the reactor. In addition, the inclination of the bag when feeding and the arc-shaped opening facing the middle of the reactor also have a blocking effect on the dust floating upward, which can reduce the probability of dust being generated outside the reactor and is conducive to environmental protection.

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

[0018] Preferably, as an improvement, the bag opening mechanism also includes a material shaking assembly, the material shaking assembly has a plurality of circumferentially arranged elastic struts, and a connection structure that can automatically connect or disconnect is connected between the material shaking assembly and the output shaft of the rotator; in step S2, when the space mover drives the material bag to above the cutter, the material bag is also placed on the elastic struts.

[0019] Preferably, as an improvement, in step S3, when the rotator drives the cutter to cut the bag, the connection structure is disconnected, and the shaking material assembly only serves as a support for the bag, and after the arc-shaped opening is cut, the connection structure is connected; it also includes step S4: after step S3 is completed, the rotator is started, and the rotator output shaft is allowed to swing back and forth, so that the multiple elastic support rods of the shaking material assembly hit the bottom of the bag to achieve shaking of the material.

[0020] Preferably, as an improvement, the material shaking assembly also includes a mounting column rotatably connected to the output shaft of the rotator, and a plurality of elastic support rods are distributed circumferentially along the mounting column, each elastic support rod includes a supporting portion and a sliding portion perpendicular to each other, the supporting portion is used to contact the bottom of the material bag, the sliding portion is radially arranged along the output shaft of the rotator and radially slidably connected to the mounting column, an elastic member for pushing the support rod outward is provided between the support rod and the mounting column, and the distance between the support portion and the central axis of rotation is smaller than the distance between the cutter and the central axis of rotation.

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

[0022] Preferably, as an improvement, the elastic insertion rod comprises a slide rod radially slidably connected to the mounting column, a spherical top fixed to the free end of the slide rod, and a spring for pushing the slide rod toward the rotation center.

[0023] Preferably, as an improvement, the bag opening mechanism further comprises a linear drive, which is used to drive the rotator to move along the rotation center axis, and the support portion is parallel to the rotation center axis.

[0024] Preferably, as an improvement, the cutter is fixed to the output shaft of the rotator through a connecting rod, an extension rod is fixed to the free end of the connecting rod, the mounting portion of the cutter is sunken 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 drive the rotator to move so that the extension rod and the cutter are located below the bag and do not contact the bag, and when shaking the material in step S4, the swing angle of the connecting rod driven by the rotator is controlled 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 seat, and after the feeding of a reactor is completed, the mounting seat and the bag opening mechanism can be directly removed from the feeding port.

[0026] Preferably, as an improvement, a material taking rack is installed on the material taking device, and a pointed structure protruding outward is fixed on the material taking rack, and the pointed structure is used to push open a shielding curtain hung above the feeding port with its tip.

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

[0028] 1. The bag opening mechanism of the present invention can not only use the cutter to open the bag, but also use the material shaking component arranged on the bag opening mechanism. On the one hand, it is used to support the material bag before the bag is opened to prevent the material bag from being unstable due to the tilt of the material bag. On the other hand, the material shaking component can be set to shake the material in time after the feeding is completed to reduce the residual raw materials in the material bag.

[0029] 2. The present invention ensures through a connecting structure that the material shaking assembly will rotate with the output shaft of the rotator to beat the material bag only when shaking of the material is needed. When the material bag presses the material shaking assembly, the rotation of the cutter driven by the rotator will not cause the rotation of the material shaking assembly, thereby ensuring that the material shaking assembly stably supports the material bag before the material bag is fed.

[0030] 3. The setting of the linear drive and the extension rod enables the cutter and the connecting rod to be moved under the bag during the falling process of the raw materials to avoid the impact of the raw materials on the cutter and the connecting rod, and the extension rod can be used to beat the corners of the bag to further reduce the residual amount of raw materials in the bag.

[0031] 4. The pointed end structure on the material picking rack can ensure that when the material picking device drives the material bag to move into the space enclosed by the shielding curtain, the material bag and the material picking device can smoothly enter the space enclosed by the shielding curtain.

[0032] 5. The present invention realizes automatic feeding of the reaction kettle in a narrow space, and can also feed other reaction kettles in the same way after the mounting seat and the bag opening mechanism are transferred, which helps to improve the feeding efficiency, reduce the equipment procurement cost and improve the utilization rate of the automatic feeding equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0035] Figure 3 for Figure 2 The figure in the middle is a three-dimensional structural diagram showing the material picker tilting the bag into place and waiting to open the bag, and the lower part of the shielding curtain is removed in the diagram.

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

[0037] Figure 5 for Figure 4 A partial enlarged schematic diagram of .

[0038] Figure 6 for Figure 3 The figure shows the three-dimensional structure diagram of the space mover, the material picker, the mounting base and the bag opening mechanism.

[0039] Figure 7 for Figure 6 Partial front view of .

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

[0041] Fig. 9 for Figure 7 Schematic diagram of the three-dimensional structure after rotation by another angle.

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

[0043] Fig.11 for Fig.10 B view.

[0044] Fig.12 for Fig.11 CC section view in.

[0045] Fig.13 Schematic diagram of the position of the cutter before and after the bag is opened and a schematic diagram of the arc-shaped opening of the bag according to an embodiment of the present invention.

[0046] Fig.14 It is a schematic diagram of the three-dimensional structure of the second embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following is further described in detail through specific implementation methods:

[0048] The figure marks in the drawings of the specification 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 seat 3, positioning pin 31, anti-tilt protrusion 32, bag opening mechanism 4, linear drive 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, cutter cutting path 200.

[0049] Embodiment 1 is basically as shown in the attached Figures 1 to 13 shown.

[0050] An automated feeding method for solid raw materials in a water reducer requires an automatic feeding device for solid raw materials in a water reducer. The automatic feeding device for solid raw materials in a water reducer comprises a space mover 1, a feeder 2 installed at the output end of the space mover 1, a mounting seat 3 inserted in the feeding port, and a bag opening mechanism 4 fixed on the mounting seat 3. In this embodiment, the space mover 1 adopts an industrial robot. The space mover 1 is used to drive the feeder 2 to transfer a material bag 100 from a standby area to the feeding port. The feeder 2 is used to suck 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] The details are as follows:

[0052] 1. Space Mover 1

[0053] The space mover 1 is an industrial robot, and the output arm of the industrial robot can rotate to facilitate the horizontal lifting of the material bag 100 to be tilted. When tilted, the length direction of the material bag 100 forms an angle with the horizontal plane.

[0054] The space mover 1 is installed on a track 11, and the track 11 is installed on a working platform 1000. The working platform 1000 is close to the top section of the reactor to feed materials to 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 have exactly the same direction, so as to facilitate the movement of a space mover 1 and the transfer of the mounting seat 3 and the bag opening mechanism 4 on the reactor to meet the feeding needs of multiple reactors and reduce costs.

[0055] 2. Reclaimer 2

[0056] The feeder 2 includes a feed rack 21 and a plurality of feed suction cups 22 installed under the feed rack 21. The feed rack 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 through a guide rod 213. One end of the guide rod 213 is fixed on 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 is against the connecting plate 211, and the other end is against the mounting plate 212. A tip structure 2121 protruding outward is integrally formed on the mounting plate 212, and the tip structure is used to push open the shielding curtain 20 hung above the feeding port with the tip.

[0057] A plurality of suction cups are mounted on the 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, and the suction cup on the material picker 2 is pressed on the upper surface of the material bag 100. The space mover 1 drives the material picker 2 to continue pressing downward, so that all the suction cups are adsorbed, and then the space mover 1 is started to drive the material bag 100 to be transferred.

[0059] 3. Mounting seat 3 and bag opening mechanism 4

[0060] The feed port of the reactor is integrally formed with a flange 10, and a plurality of evenly distributed mounting holes 101 are provided around the flange 10. The flange 10 can be used to cover the feed port when it is not needed for feeding.

[0061] A positioning pin 31 and an anti-tilt protrusion 32 are fixed to the bottom of the mounting seat 3. The positioning pin 31 is used to be inserted into the mounting hole 101 of the flange 10, and the anti-tilt protrusion 32 is used to abut against the outer periphery of the flange 10. The side surface of the anti-tilt protrusion 32 that cooperates with the flange 10 is an arc surface, so that after the mounting seat 3 is transferred, the accuracy of the installation position of the bag opening mechanism 4 can be ensured each time.

[0062] The bag opening mechanism 4 is fixed on the mounting seat 3, and a part 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 seat 3. The linear driver 41 drives the rotator 42 to approach or move away from the center of the feeding port. The material shaking assembly 43 is installed 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. The connecting rod 44 is arranged radially along the output shaft of the rotator 42. The end of the connecting rod 44 away from the rotation center is provided with a cutter 45 installation groove, and the installation portion of the cutter 45 is sunk into the cutter. 45 installation groove, the free end of the connecting rod 44 is welded with an extension rod 441 that continues to extend outward, the extension rod 441 is close to the back of the cutter 45, and the extension rod 441 is far away from the opening of the installation groove of the cutter 45, so that there is enough space on the connecting rod 44 to fix the cutter 45 clamped in the installation groove of the cutter 45 by screws; the extension rod 441 is used to move to the bottom of the material bag 100 under the drive of the linear mover, and then slap the end corner of the material bag 100 under the drive of the rotator 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 lowest mounting hole 101 of the flange 10 along with the mounting seat 3. The output shaft of the linear drive 41 and the output shaft of the rotator 42 are inclined relative to both the horizontal plane and the feeding port, so that the moving trajectory of the cutter 45 driven by the rotator 42 has a certain angle relative to the horizontal plane, so that 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 material assembly 43 includes a mounting column 431 rotatably connected to the output shaft of the rotator 42 through a bearing, a plurality of support rods 432 slidably connected to the mounting column 431, an elastic plug rod 46 is installed on the mounting column 431, a chuck 421 is fixed on the output shaft of the rotator 42, and the elastic plug rod 46 can be inserted into the slot 4211 on the chuck 421 under elastic force. There are two slots 4211, and the two slots 4211 are symmetrically arranged about the output shaft of the rotator 42. The elastic plug rod 46 includes a slide rod 461 radially slidably connected to the mounting column 431, 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 fixed sleeve 4311 is fixed on the mounting column 431, the slide rod 461 is slidably connected in the fixed sleeve 4311, and one end of the spring of the elastic plug rod 46 abuts against the bottom of the fixed sleeve 4311, and the other end abuts against the top of the slide rod 461. The elastic insert rod 46 and the chuck 421 with the slot 4211 are arranged so that when the mounting column 431 is subjected to external force and is difficult to rotate, the rotation of the output shaft of the rotator 42 can enable the rotation of the chuck 421 to push the insert rod 46 out of the slot 4211; and when the mounting column 431 is not subjected to external force or the external force is small, the insert rod 46 is inserted into the slot 4211 to facilitate the shaking assembly to be connected to the chuck 421 as a whole and rotate synchronously with the output shaft of the rotator 42.

[0066] A plurality of support rods 432 are evenly distributed along the rotation center axis. Each support rod 432 includes a T-shaped support portion 4321 and a sliding portion 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 center axis of the rotator 42. The support portion 4321 has a support arc surface so that it has a larger contact area with the material bag 100. The sliding portion is arranged radially along the output shaft of the rotator 42 and is radially slidably connected to the mounting column 431. An elastic member for ejecting the support rod 432 outward is provided between the support rod 432 and the mounting column 431. The elastic member is a spring sleeved on 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 column 431. The spring keeps the support rod 432 in a tendency to eject outward. The distance between the support portion 4321 and the rotation center axis is smaller than the distance between the cutter 45 and the rotation center axis.

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

[0068] In this embodiment, there are multiple shielding curtains 20 enclosed above the feeding port, and one end of the channel formed by the multiple shielding curtains 20 is connected to the feeding port and the other end is connected to the negative pressure dust removal device. In order to ensure the automatic and rapid feeding of the automatic feeding device of this embodiment and to ensure the negative pressure dust removal effect as much as possible, the shielding curtains 20 are set to be transparent for easy observation, and the shielding curtains 20 are made of soft materials to facilitate rolling, lifting or pushing the shielding curtains 20.

[0069] This embodiment also discloses an automatic feeding method for solid raw materials in a water reducing agent, comprising the following steps:

[0070] S0: Preparation work before feeding, including installing the bag opening mechanism 4 on the feeding port, specifically, inserting the positioning pin 31 on the mounting seat 3 to which the bag opening mechanism 4 is fixed into the mounting hole 101 at the lowest end of the feeding port, so that the side of the anti-tilt protrusion 32 is in contact with the outer periphery of the flange 10. After the installation is completed, control the outward extension of the output shaft of the linear drive 41 and the rotation of the rotator 42, so that the support rod 432 can be used to support the bag 100 and the position of 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 curtains 20, until the shielding curtains 20 are rolled up and do not affect the entry and exit of the material bag 100. After the one or two shielding curtains 20 are rolled up, convenience is provided for the material picker 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 suck the material bag 100 to be fed, and drives the material picker 2 and the material bag 100 to be transferred to the top of the feeding port enclosed by the shielding curtain 20 through the space mover 1.

[0073] S2: Control the space mover 1 to move so that the bag 100 is tilted and positioned 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 started, driving the cutter 45 to rotate at a certain angle. The plane where the moving track of the cutter 45 rotates is at an angle to the horizontal plane. After the cutter 45 rotates, an arc-shaped opening is cut at the bottom of the bag 100, and the arc-shaped opening faces the middle of the reactor. After the bag 100 is cut, the raw materials fall quickly from the bag 100.

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

[0076] In step S3, after the cutter 45 completes opening the bag 100, the linear actuator 41 is controlled to drive the connecting rod 44 and the cutter 45 to hide under the bag 100 to prevent the falling raw materials from continuously impacting the connecting rod 44 and the cutter 45. Because the long strip support portion 4321 of the support rod 432 is set, even if the linear actuator 41 drives the shaking assembly and the connecting rod 44 to retreat toward the outside of the reactor, the support portion 4321 of the support rod 432 still forms a contact support for the bag 100.

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

[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 the material. After step S3 is completed, the rotator 42 is started to make the output shaft of the rotator 42 swing back and forth, so that the multiple support rods 432 of the material shaking assembly 43 hit the bottom of the material bag 100 to achieve shaking of the material.

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

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

[0082] In this embodiment, by providing a pointed structure on the feeding frame 21 and providing the cutter 45 of the bag opening mechanism 4 on the feeding port, the automatic pushing open of the shielding curtain 20 by the feeding device 2 and the bag opening operation in a narrow space are realized, so that the automatic feeding of solid raw materials of the water reducer which are space-constrained and need to be shielded by the shielding curtain 20 can be realized, which can solve the problems of high labor intensity and low production efficiency in the current manual feeding.

[0083] In addition, the cutter 45 of the bag opening mechanism 4 is no longer moved in the length direction relative to the material bag 100 as before, but is changed to an arc or circular movement of the cutter 45 driven by the rotator 42. The cutter 45 cuts an arc-shaped opening at the bottom end of the material bag 100 under the drive of the rotator 42. On the one hand, the bag opening in a narrow space is realized, and the bag opening cutter 45 is located in the feeding port to ensure that the raw materials can fall into the reactor quickly. In addition, the inclination of the material bag 100 when feeding and the arc-shaped opening facing the middle of the reactor also have a blocking effect on the dust floating upward, which can reduce the probability of dust being generated outside the reactor and contribute to environmental protection.

[0084] In addition, the material shaking assembly 43 of the bag opening mechanism 4 can be used to support the material bag 100 containing raw materials, and can also directly act on the bottom of the empty material bag 100. In addition, the extension rod 441 on the connecting rod 44 can directly act on the corners of the material bag 100 where residual raw materials are likely to remain to shake the materials, thereby ensuring that the residual amount in the material bag 100 is lower.

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

[0086] Embodiment 2

[0087] The improvement of this embodiment is based on the fact that the reactor in actual production is very high, about 4 meters, and the feeding port of the reactor is set at the top, so the working platform 1000 is often built near the top of the reactor, and the solid raw material storage is often on the first floor, so the raw materials need to be sent to the working platform 1000. On the basis of the first embodiment, the stacked whole vehicle material bags on the first floor can be sent to the working platform 1000 through the freight elevator, and the whole vehicle material bags can be placed next to the space mover 1, so that the material picker 2 installed on the space mover 1 can be convenient for picking up materials. Of course, the following feeding methods are also possible:

[0088] Combination Fig.14 , discloses an automatic feeding system for solid raw materials in a water reducer, including the automatic feeding device for solid raw materials in a water reducer of embodiment 1, and also includes a feeding line 5, the feeding line 5 is used to convey a material bag 100, the feeding line 5 adopts a belt drive, the feeding line 5 can extend from the first floor to the working platform 1000, and the accompanying drawings only show a part of the feeding line 5 located on the working platform 1000, and a powder shaper 7 and a dust removal roller 6 are sequentially installed on the feeding line 5 of the working platform 1000 along the feeding direction, 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] When this embodiment is adopted, the uneven material bags 100 on the feeding line 5 are leveled by the powder shaper 7 to ensure that the suction cups 22 can act on basically the same plane when taking materials subsequently, and the dust removal roller 6 can clean the dust on the material bags 100, thereby ensuring that the upper surface of the material bags 100 is clean and tidy, and ensuring that the material suction cups 22 can firmly hold the material bags 100; in addition, a dust removal roller is provided on the feeding line 5 to utilize the feeding line 5 to transport the material bags 100, and the material bags 100 are automatically dusted after passing through the dust removal roller, and there is no need to provide a dust removal structure on the feeder 2, ensuring that the feeder 2 has a simple structure, so that after the material bags 100 are fed into the feeding port, the bottom end of the material bags 100 can be further extended downward into the feeding port, which helps to reduce the overflow of dust during the feeding process.

[0090] In addition, in actual operation, the material picker 2 can put the material bag 100 that has completed feeding back onto the feeding line 5, and use the space robot to press down when placing it, to ensure that the empty material bag 100 is flat, which is convenient for stacking the empty material bag 100 after being output from the feeding line 5.

[0091] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records 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: The steps include: S0: Preparation work before feeding, rolling up part of the shielding curtains that block the material bags from entering and exiting the enclosed area formed by multiple shielding curtains, until the shielding curtains are rolled up to the part that does not affect the entry and exit of the material bags; and installing a bag opening mechanism with a cutter and a rotator on the feeding port; S1: The material taking suction cup of the material taking device takes up the material bag to be fed, and drives the material taking device and the material bag to move to the top of the feeding port enclosed by the shielding curtain through the space mover; S2: Control the space mover to move so that the bag is tilted and located above the cutter; S3: The rotator on the bag opening mechanism starts, driving the cutter to rotate at a certain angle. The plane where the moving track of the cutter is located is at an angle to the horizontal plane. After the cutter rotates, an arc-shaped opening is cut 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 materials automatically fall into the reactor.

2. The method for automatically feeding solid raw materials in a water reducing agent according to claim 1, characterized in that: The bag opening mechanism also includes a material shaking assembly, which has a plurality of circumferentially arranged elastic struts, and a connection structure that can automatically connect or disconnect is connected between the material shaking assembly and the output shaft of the rotator; in step S2, when the space mover drives the material bag to above the cutter, the material bag is also placed on the elastic struts.

3. The method for automatically feeding solid raw materials in a water reducing agent according to claim 2, characterized in that: In step S3, when the rotator drives the cutter to cut the bag, the connection structure is disconnected, and the shaking material assembly only serves as a support for the bag. After the arc opening is cut, the connection structure is connected; it also includes step S4: after step S3 is completed, the rotator is started, and the rotator output shaft is allowed to swing back and forth, so that the multiple elastic support rods of the shaking material assembly hit the bottom of the bag to achieve shaking of the material.

4. The method for automatically feeding solid raw materials in a water reducing agent according to claim 3, characterized in that: The material shaking assembly also includes a mounting column rotatably connected to the output shaft of the rotator, and a plurality of elastic support rods are distributed circumferentially along the mounting column, each elastic support rod includes a supporting portion and a sliding portion perpendicular to each other, the supporting portion is used to contact the bottom of the material bag, the sliding portion is radially arranged along the output shaft of the rotator and radially slidably connected to the mounting column, an elastic member for pushing the support rod outward is provided between the support rod and the mounting column, and the distance between the support portion and the central axis of rotation is smaller than the distance between the cutter and the central axis of rotation.

5. The method for automatically feeding solid raw materials in a water reducing agent according to claim 3, characterized in that: The connection structure includes an elastic rod installed on the mounting column and a chuck fixed on the output shaft of the rotator. The elastic rod can be inserted into a slot on the chuck under elastic force. There are at least two slots, and all the slots are distributed circumferentially about the output shaft of the rotator.

6. The method for automatically feeding solid raw materials in a water reducing agent according to claim 3, characterized in that: The elastic insertion rod comprises a sliding rod which is slidably connected to the mounting column in a radial direction, a spherical top portion fixed to the free end of the sliding rod and a spring used for pushing the sliding rod toward the rotation center.

7. The method for automatically feeding solid raw materials into a water reducing agent according to claim 4, characterized in that: The bag opening mechanism also includes a linear drive, which is used to drive the rotator to move along the rotation center axis, and the support part is parallel to the rotation center axis.

8. The method for automatically feeding solid raw materials in a water reducing agent according to claim 7, characterized in that: The cutter is fixed to the output shaft of the rotator through a connecting rod, an extension rod is fixed to the free end of the connecting rod, the mounting portion of the cutter is sunk 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 drive the rotator to move so that the extension rod and the cutter are located below the bag and do not contact the bag, and when shaking the material in step S4, the swing angle of the connecting rod driven by the rotator is controlled so that the extension rod can hit the corner of the bag.

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

10. The method for automatically feeding solid raw materials in a water reducing agent according to any one of claims 1 to 8, characterized in that: The material taker is provided with a material taking frame, on which a pointed structure protruding outward is fixed, and the pointed structure is used for pushing open a shielding curtain hung above the feeding port with its tip.

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