CN112345044B

CN112345044B - Single-roller simple metering machine and operation method thereof

Info

Publication number: CN112345044B
Application number: CN202011227309.6A
Authority: CN
Inventors: 李伟; 辻冈俊夫; 刘炳
Original assignee: Shanghai Yamato Scale Co ltd
Current assignee: Shanghai Yamato Scale Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2024-09-06
Anticipated expiration: 2040-11-06
Also published as: CN112345044A

Abstract

The invention provides a simple single-roller metering machine, which comprises a feed box, a feeding mechanism, a metering mechanism, a transferring and discharging mechanism and a control mechanism, and is characterized in that: the feed box is communicated with the feeding mechanism, the feeding mechanism corresponds to the metering mechanism, the metering mechanism corresponds to the transferring and discharging mechanism, and the control mechanism controls the feeding mechanism to operate, controls the metering mechanism to operate and controls the transferring and discharging mechanism to operate; the feed box comprises at least one blanking channel, the feeding mechanism comprises at least one feeding roller, the metering mechanism comprises at least one metering hopper, and the transferring and discharging mechanism comprises at least one receiving cup; each discharging channel corresponds to one feeding roller, each feeding roller corresponds to one weighing hopper, and each weighing hopper corresponds to at least one receiving cup. The invention solves the problems of poor metering precision, high fault rate, complex structure, large occupied space and high cost of the feeding mechanism in the prior art.

Description

Single-roller simple metering machine and operation method thereof

Technical Field

The invention relates to the technical field of powder material weighing and metering, in particular to a simple single-roller metering machine and an operation method thereof.

Background

At present, a feeding mechanism of a metering machine mostly adopts a spiral type, a tubular type and a double-drum type (that is to say, a feeding mechanism consisting of a discharging channel corresponding to two drums), and the spiral type has the problems of poor metering precision, few types of metered powder materials and the like; the pipe type has the conditions of high cost and easy clamping of the rotary pipe by powder materials; the double-drum type metering device has high metering precision and is applicable to most powder materials, but the problems of complex structure, large occupied space and high cost still exist.

Disclosure of Invention

The invention aims to provide a single-roller simple metering machine and an operation method thereof, which mainly solve the problems of poor metering precision, high failure rate, complex structure, large occupied space and high cost of a feeding mechanism in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the utility model provides a simple and easy formula measuring machine of single cylinder, includes workbin, feeding mechanism, metering mechanism, moves and carries the mechanism of discharging, control mechanism, its characterized in that: the feed box is communicated with the feeding mechanism, the feeding mechanism corresponds to the metering mechanism, the metering mechanism corresponds to the transferring and discharging mechanism, and the control mechanism controls the feeding mechanism to operate, controls the metering mechanism to operate and controls the transferring and discharging mechanism to operate;

the feed box comprises at least one blanking channel, the feeding mechanism comprises at least one feeding roller, the metering mechanism comprises at least one metering hopper, and the transferring and discharging mechanism comprises at least one receiving cup;

each discharging channel corresponds to one feeding roller, each feeding roller corresponds to one weighing hopper, and each weighing hopper corresponds to at least one receiving cup.

Further, the metering mechanism further comprises a weighing sensor and a weighing base plate; each weighing hopper is provided with a weighing sensor, the weighing sensors feed information back to a weighing base plate, and the weighing base plate is a part of the control mechanism.

Further, the feeding mechanism is also provided with a box body and a speed regulating motor, the speed regulating motor is a part of the control mechanism, the feeding roller consists of at least one tooth piece, a roller shaft of the feeding roller is connected with the speed regulating motor, the speed regulating motor is connected with the box body, and the feeding roller is positioned in the box body; the box top is equipped with the feed inlet, and the bottom half is equipped with the discharge gate, and the feed inlet corresponds the unloading passageway, and the discharge gate corresponds the weighing hopper.

Further, a cutting mechanism is arranged between the feeding mechanism and the metering mechanism, the cutting mechanism is controlled to operate by a control mechanism, the cutting mechanism comprises a pneumatic control box and a pneumatic cutting door, the pneumatic control box is provided with an electromagnetic valve group, the pneumatic control box is communicated with a compressed air inlet, and a filtering regulating valve and a manual ball valve are arranged at the compressed air inlet; the pneumatic cut-off door is arranged at the discharge hole of the box body, operates under the control of the pneumatic control box and the electromagnetic valve group and forms a closed state or an open state with the discharge hole of the box body; the electromagnetic valve group is a part of a control mechanism.

Further, the speed regulating motor is detachably connected with the box body; the single-roller simple metering machine further comprises an equipment frame, and the material box, the feeding mechanism and the transferring and discharging mechanism are all arranged on or in the equipment frame; a control cabinet is arranged at the bottom of the equipment frame;

the transfer and discharge mechanism comprises a guide rail arranged on the equipment frame, a servo motor and a movable slide block arranged on the guide rail, wherein the slide block is connected with a transfer platform for placing a receiving cup, and the servo motor controls the slide block to run on the guide rail; the servo motor is a part of a control mechanism;

The weighing base plate is arranged in the control cabinet; and/or the transfer platform is provided with an NG opening and closing bucket, the NG opening and closing bucket consists of a movable part and a fixed part, the equipment frame is provided with a thimble for pushing the movable part to enable the NG opening and closing bucket to be in an open state, and a NG receiving box is arranged under the NG opening and closing bucket in the open state.

Further, the control mechanism also comprises an operation screen, a PLC controller and a speed regulator for controlling the speed of the speed regulating motor, wherein the operation screen, the PLC controller, the speed regulator, the speed regulating motor, the electromagnetic valve group and the servo motor jointly form a control system for controlling the operation of the single-roller simple metering machine.

Further, the number of the blanking channels is 2 or 3 or 5 or 6; or 4 discharging channels, wherein the material receiving cups are single-row 4 cups or double-row 8 cups or three-row 12 cups or four-row 16 cups; the equipment frame is made of square steel pipes, and the joints are all open; the PLC controller and the speed regulator are all arranged in the control cabinet; the feed box is also provided with a dust removal port; and a protective cover is arranged outside the speed regulating motor.

The utility model provides a single cylinder plain type measuring machine, including being used for inserting the external material and to the workbin of feeding mechanism unloading, be used for controlling the feeding mechanism of unloading speed and unloading volume, be used for cutting off the shutdown mechanism of then stopping the feed to feeding mechanism unloading, be used for carrying out the metering mechanism of measuring to the material that feeding mechanism comes out, be used for carrying out the material that the metering mechanism comes out and carry out the material and carry and discharge mechanism, be used for controlling feeding mechanism, shutdown mechanism, carry the control mechanism of discharge mechanism operation, its characterized in that: the feed box is communicated with the feeding mechanism, the feeding mechanism corresponds to the metering mechanism, the metering mechanism corresponds to the transferring and discharging mechanism, and the cutting mechanism is matched with the feeding mechanism;

Each blanking channel of the feed box is corresponding to one feeding mechanism, and the feeding mechanism is only provided with a single feeding roller, and the single feeding roller corresponds to the metering mechanism.

The operation method of the simple single-roller metering machine relates to the simple single-roller metering machine, and comprises the following specific steps:

Firstly, starting a single-roller simple metering machine, and setting a metering mode (comprising a weight value range of qualified materials) through an operation screen;

Secondly, injecting materials into a feeding mechanism through a material box, and synchronously discharging the materials into a measuring hopper 31 by the feeding mechanism;

Thirdly, the weighing condition and judgment information according to the weighing mode are fed back to the control mechanism by the metering mechanism, and the control mechanism is operated according to the feedback of the metering mechanism in the following mode:

When the weight of the weighing hopper material reaches the weight value range of the qualified material, the feeding mechanism pauses discharging, the pneumatic cutting door of the cutting mechanism is closed, and the control unit controls the receiving cup of the transferring and discharging mechanism to receive the qualified material;

Or when the weight of the weighing hopper material is lower than the weight value range of the qualified material, the control unit controls the feeding mechanism to continue discharging until the weight of the material reaches the weight value range of the qualified material, the feeding mechanism pauses discharging, the pneumatic cut-off door of the cut-off mechanism is closed, the control unit controls the material receiving cup of the transferring and discharging mechanism to receive the qualified material, or the control unit directly judges that the weighing hopper material with the weight lower than the weight value range of the qualified material belongs to the unqualified material, the feeding mechanism pauses discharging, and the control unit controls the material receiving cup of the transferring and discharging mechanism or the NG opening and closing hopper to receive the unqualified material;

Or when the weight of the weighing hopper material is higher than the weight value range of the qualified material, the control unit directly judges that the weighing hopper material with the weight higher than the weight value range of the qualified material belongs to the unqualified material, the feeding mechanism pauses the discharging, the pneumatic cutting door of the cutting mechanism is closed, and the control unit controls the material receiving cup or the NG opening and closing hopper (53) of the transferring and discharging mechanism to receive the unqualified material;

And fourthly, the feeding mechanism (2) is started again to perform new round of blanking, the metering mechanism (3) performs new round of metering and feeds back to the control mechanism synchronously, and the control mechanism performs operation according to the first step to the third step, so that the operation is reciprocating. When a new round of blanking starts, the NG opening and closing hopper just runs to the thimble, the thimble pushes the NG opening and closing hopper open, and the NG material is discharged into the NG receiving box below.

Further, the metering mode also comprises the weight value and the precision requirement required by the qualified materials, and/or meets the conditions and the speed of fast feeding and/or slow feeding, and/or the working time range of a single metering link;

the weighing hopper material is identified as an unqualified material when the weight of the material is lower than the weight value range of the qualified material in the working time range of a single metering link;

The receiving cups or NG receiving boxes for receiving the unqualified materials are manually taken away singly one by one or are periodically processed for receiving the unqualified materials for a plurality of times.

In view of the technical characteristics, the invention has the following beneficial effects:

1. the simple single-roller metering machine adopts a single roller type (namely, a single feeding roller is arranged in a feeding machine corresponding to a discharging channel), the single roller type is simple in structure, saves space and manufacturing cost, and simultaneously, the single roller is driven by a speed regulating motor to accurately control the discharging quantity and metering precision through high-speed, speed reduction and low-speed rotation.

2. According to the simple single-roller metering machine, the metering mechanism is adopted, and the blanking accuracy is improved.

3. According to the simple single-roller metering machine, the transfer and discharge mechanism has a selection function, and can be matched with other components to screen unqualified materials, so that the material qualification rate in the material receiving cup is improved.

4. The single-roller simple metering machine provided by the invention has the advantages that the feeding roller adopts the splicing of the plurality of rubber tooth plates (the cross sections of the tooth plates are gear-shaped), different herringbone angles can be spliced according to the requirements, the groove shapes of different feeding rollers are formed (namely, the groove shapes are spliced by the groove parts of the tooth plates), and the single-roller simple metering machine can adapt to materials with different properties. In addition, in the rotary process of the feeding roller, the groove type is used for loading quantitative materials (preferably powder materials), so that the feeding mechanism is convenient for stably, uniformly and accurately feeding materials, and meanwhile, the feeding mechanism is not easy to be blocked by split materials, and the failure rate is low. In addition, the toothed drum can enable the feeding mechanism (namely the feeding mechanism) to adapt to powder materials with different characteristics (fluidity, jet flow property and the like) by simply and flexibly adjusting the angle, the width and the like of the herringbone groove, so that the uniform quantitative feeding requirement of most powder materials can be met, and the problem that the types of powder materials which can be measured by the equipment in the prior art are few is solved.

Drawings

Fig. 1 is a front view of a single-drum simple metering machine in embodiment 1.

Fig. 2 is a left side view of a single drum simple metering machine of example 1.

Fig. 3 is a right side view of a single drum simple metering machine of example 1.

Fig. 4 is a top view of a single drum plain type weighing machine of example 1.

Fig. 5 is a front view (mounted state) of the feeding mechanism in embodiment 1.

Fig. 6 is a schematic view of the structure of the teeth of the feeding mechanism in embodiment 1.

Fig. 7 is a schematic view of the structure of a feed roller of the feed mechanism in embodiment 1.

Fig. 8 is a schematic view of the structure of the feeding roller and the casing of the feeding mechanism in embodiment 1 after being mounted.

Fig. 9 is a perspective view of the feeding roller and the case of the feeding mechanism in embodiment 1 after being mounted.

Fig. 10 is a front view (detached state) of the feeding mechanism in embodiment 1.

Fig. 11 is a plan view of the transfer and discharge mechanism in example 1 (NG opening/closing hopper and NG receiving box are not vertically aligned).

Fig. 12 is a plan view of the transfer and discharge mechanism (corresponding to the vertical positions of the NG opening/closing hopper and NG receiving box) in example 1.

Fig. 13 is a front view of the transfer and discharge mechanism in example 1 (corresponding to the vertical positions of the NG opening/closing hopper and NG receiving box).

Fig. 14 is a right side view of the transfer and discharge mechanism (NG opening and closing hopper and NG receiving box are vertically aligned) in embodiment 1.

Fig. 15 is a flowchart showing the operation of a single-drum simplified metering machine according to embodiment 1.

In the figure: 1 is a feed box; 11 is a blanking channel; 12 is a stirring part;

2 is a feeding mechanism; 21 is a feed roller; 211 is a tooth plate; 211-1 is a groove portion; 212 is a drum shaft; 22 is a box body; 221 is a feed inlet; 222 is a discharge hole; 23 is a mounting plate; 24 is a speed regulating motor; 25 is a protective cover; 26 is a screw; 27 is a groove shape;

3 is a metering mechanism; 31 is a weighing hopper; 311 is a metering blanking point;

4 is a cutting mechanism; 41 is a pneumatic control box; 411 is a solenoid valve block; 412 is a compressed air inlet; 413 is a manual ball valve; 414 is a filter regulating valve; 42 is a pneumatic cut-off door;

5 is a transfer and discharge mechanism; 51 is a transfer station; 52 is a servo motor; 53 is NG open-close bucket; 531 is a movable part; 532 is a fixed portion; 54 is a thimble; 55 is NG material receiving box; 56 is a guide rail; 57 is a slider; 58 is a receiving cup; 58-1 is a first row of receiving cups; 58-2 is a second row of receiving cups; 58-3 is a third row of receiving cups; 58-4 is a fourth row of receiving cups; 59-1 is a gear; 59-2 is a rack;

6 is an operation screen;

7 is an equipment frame;

8 is a dust removing port;

And 9 is a control cabinet.

Detailed Description

The application is further described below in conjunction with the detailed description. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the teachings of the present application, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.

Referring to fig. 1 to 14, in a specific embodiment 1, the embodiment 1 provides a single-drum simple metering machine, which comprises a feed box 1, a feeding mechanism 2, a metering mechanism 3, a transferring and discharging mechanism 5, and a control mechanism, and is characterized in that: the material box 1 is communicated with the feeding mechanism 2, the feeding mechanism 2 corresponds to the metering mechanism 3, the metering mechanism 3 corresponds to the transferring and discharging mechanism 5, and the control mechanism controls the feeding mechanism 2 to operate, the metering mechanism 3 to operate and the transferring and discharging mechanism 5 to operate; the material box 1 is used for accessing external materials and discharging the materials to the feeding mechanism, and the feeding mechanism 2 is used for controlling the discharging speed and the discharging amount;

The feed box 1 comprises at least one blanking channel 11, the feeding mechanism 2 comprises at least one feeding roller 21, the metering mechanism 3 comprises at least one metering hopper 31, and the transferring and discharging mechanism 5 comprises at least one receiving cup 58; the weighing mechanism (3) further comprises a weighing sensor and a weighing base plate, namely, each weighing hopper 31 is provided with a weighing sensor (not shown in the drawing), the weighing sensor feeds information back to the weighing base plate (not shown in the drawing), and the weighing base plate is a part of the control mechanism. The metering mechanism 3 is used for metering the material discharged by the feeding mechanism, namely, the metering mechanism 3 only displays the weight of the material discharged by the feeding mechanism 2, and the starting, stopping, quick feeding and slow feeding of the feeding mechanism are controlled according to the weighed weight (namely, through a weighing sensor and a weighing substrate).

Each of the discharging passages 11 corresponds to one of the feeding rollers 21, each of the feeding rollers 21 corresponds to one of the weighing hoppers 31, and each of the weighing hoppers 31 corresponds to at least one of the receiving cups 58.

In this embodiment 1, four discharging channels 11 are arranged at the bottom of the material box 1, each discharging channel 11 corresponds to one feeding machine, only one feeding roller 21 is arranged in each feeding machine, and the feeding mechanism 2 consists of four feeding machines. The stirring part 12 can be additionally arranged in the material box 1, and after materials in the material box 1 are stirred by the stirring part 12 in the blanking process, the blanking of the materials is smoother, and the blanking speed is improved.

That is, each feeding channel 11 corresponds to one feeding roller 21 (i.e. the feeding machine corresponding to each feeding channel 11 adopts a single roller structure), compared with the traditional double-roller feeding machine, the feeding mechanism or feeding machine with the single roller structure saves space and cost, and precisely controls the feeding quantity and metering precision of the feeding mechanism by high-speed, deceleration and low-speed rotation under the driving of the speed regulating motor 24 for the single roller.

A cutting mechanism 4 is further disposed between the feeding mechanism 2 and the metering mechanism 3, and the cutting mechanism 4 is controlled by a control mechanism (for example, in embodiment 1, the cutting mechanism 4 is controlled by a solenoid valve group 411).

The cutting mechanism comprises a pneumatic control box 41 and a pneumatic cutting door 42, the pneumatic control box 41 is provided with an electromagnetic valve group 411, the pneumatic control box 41 is communicated with a compressed air inlet 412, and a filtering regulating valve 414 (used for filtering the compressed air entering the pneumatic control box 41) and a manual ball valve 413 (used for controlling the opening and closing of the compressed air inlet 412) are arranged at the compressed air inlet 412; the pneumatic cut-off door 42 is arranged at the discharge hole 222 of the box body 22, and the pneumatic cut-off door 42 runs under the control of the pneumatic control box 41 and the electromagnetic valve group 411 and forms a closed state or an open state with the discharge hole 222 of the box body 22; the solenoid valve block 411 is part of a control mechanism. The cutting mechanism is used for cutting off the feeding mechanism 2 to stop feeding (avoiding that the material falls into the measuring hopper after the cutting off to affect the measuring precision), or opening to re-feed, for example, a double-shaft cylinder can be arranged in the pneumatic control box 41, and the compressed air entering the pneumatic control box 41 drives the pneumatic cutting gate 42 through the double-shaft cylinder at this time, and the pneumatic cutting gate 42 extends to cut off the feeding channel or retracts to realize the effect of opening the feeding channel. The pneumatic cut-off door 42 is preferably positioned below the outlet 222 of the housing 22 to facilitate the closing and/or opening of the outlet 222 by the pneumatic cut-off door 42.

In this embodiment 1, a single hopper 31 is disposed below each single drum feeder, that is, four hoppers are disposed below each hopper 31, and a movable row of receiving cups 58 is disposed corresponding to each hopper 31 (that is, each receiving cup 58 is disposed in a row formed at the same corresponding position of different rows on the transfer platform 51 corresponding to each hopper 31 during the movement of the transfer platform 51).

Preferably, the weighing hopper 31 is provided with a weighing sensor (not shown in the drawings) which weighs the material entering the weighing hopper 31 and determines whether the target weight is reached and/or how to adjust the material feeding speed, the weighing sensor feeds information (including but not limited to signals of fast feeding, slow feeding, stopping, restarting feeding, weighing overweight, insufficient weighing, weighing meeting requirements, etc.) back to the weighing substrate, the weighing substrate feeds the determined and required action instructions back to the PLC, and the PLC can be a logic controller which sends different action instructions to the feeding mechanism 2, the cutting mechanism and the transferring and discharging mechanism 5.

For example, when the materials reach the operation scheme of all parts, the weighing sensor feeds back a stop signal to be stopped because the materials reach the preset weight value and belong to the qualified materials to the weighing substrate, the weighing substrate feeds back a command that the feeding mechanism 2 stops feeding, the cutting mechanism 2 closes the discharge hole 222, the transferring and discharging mechanism 5 moves the corresponding receiving cup 58 to the position right below the measuring hopper 31 to prepare for receiving after judging, then the PLC sends action commands to the speed regulating motor 24 of the feeding mechanism 2, the electromagnetic valve group 411 of the cutting mechanism 4 and the servo motor 52 of the transferring and discharging mechanism 5, the speed regulating motor 24 controls the corresponding feeding roller 21 to stop rotating, namely the feeding roller 21 stops feeding, meanwhile, the electromagnetic valve group 411 controls the pneumatic cutting door 42 to close the discharge hole 222 of the feeding mechanism 2, so that the follow-up materials are prevented from falling into the measuring hopper 31, the measuring accuracy is prevented from being influenced, and the servo motor 52 controls the transferring platform 51 to move until the corresponding receiving cup 58 moves to the position right below the measuring hopper 31, the measuring hopper 31 is opened and the qualified materials are discharged into the corresponding receiving cup 58, the measuring of the qualified materials is completed, the measuring hopper 31 is stopped, the corresponding feeding roller 21 stops rotating, namely the feeding roller 21 stops being stopped, and the feeding is stopped for one time, and the measuring hopper 31 is convenient to be in a state.

For example, the operation scheme of each component when the material needs to be fed fast is that the weighing sensor feeds back the fast feeding signal (50 g is supposed to be weighed, the precision requirement is +/-1 g, the front 45g is set to be fed fast, the rear 5g is fed slowly to ensure the precision, the material weight in the weighing hopper is less than 45g at the moment and is in a fast feeding stage) to the weighing substrate, the weighing substrate feeds back the instruction of the fast feeding of the feeding mechanism 2 to the PLC after judging, then the PLC sends out the action instruction of the fast feeding to the speed-regulating motor 24 of the feeding mechanism 2, the speed-regulating motor 24 accelerates the rotation, the feeding speed is improved, and the action of the fast feeding of the feeding mechanism 2 is realized.

For example, the weighing sensor feeds back a slow feeding signal (50 g is supposed to be weighed, the precision is required to be +/-1 g, the front 45g is set to be fast feeding, the rear 5g is slow feeding to ensure the precision, the weight of the material in the weighing hopper is greater than 45g at the moment, the material is in a slow feeding stage) to the weighing substrate, the weighing substrate feeds back an instruction for feeding the material to the feeding mechanism 2 in a slow feeding mode after judging, then the PLC sends a slow feeding action instruction to the speed regulating motor 24 of the feeding mechanism 2, the speed regulating motor 24 is used for decelerating and rotating, the feeding speed is reduced, the slow feeding action of the feeding mechanism 2 is realized, and the feeding precision of the feeding mechanism 2 is ensured.

For example, the weighing sensor feeds back weighing overweight signals (the weight value to be weighed and the precision requirement are set on an operation screen, 50g is required, the precision requirement is +/-1 g is supposed to be weighed, when the weight of the material in the weighing hopper is larger than 51g, the weighing hopper is overweight, the material corresponding to the weighing hopper 31 is unqualified and finally discharged into the NG receiving box) to the weighing substrate, the weighing substrate feeds back the instruction that the feeding mechanism 2 stops feeding, the cutting mechanism 4 closes the discharge hole 222 and the NG opening and closing hopper 53 on the transferring and discharging mechanism 5 moves to the position right below the weighing hopper to collect the unqualified material after judging, the PLC sends action instructions to the speed regulating motor 24 of the feeding mechanism 2, the electromagnetic valve group 411 of the cutting mechanism 4 and the servo motor 52 of the transferring and discharging mechanism 5, the corresponding feeding roller 21 is controlled by the speed regulating motor 24 to stop rotating, namely the feeding roller 21 stops feeding, meanwhile, the electromagnetic valve group 411 controls the pneumatic cut-off door 42 to cut off the discharge hole 222 of the feeding mechanism 2, so that the follow-up material is prevented from falling into the weighing hopper 31, the weight of the material which is judged to be unqualified is prevented from being increased, meanwhile, the servo motor 52 controls the transfer platform 51 to move until the NG opening and closing hopper 53 moves to be right below the weighing hopper, the weighing hopper 31 is opened (for example, the opening and closing of the weighing hopper 31 is finished by a spring and a motor), and the unqualified material is discharged into the NG opening and closing hopper 53, and the weighing hopper is emptied and is in a closed state at the moment, so that the next feeding and metering are facilitated.

The re-feeding and metering operation flow is that a weighing sensor feeds back a re-feeding signal to a weighing substrate, a command that the feeding mechanism 2 starts feeding and the cutting mechanism 4 opens the discharge hole 222 is fed back to the PLC after the weighing substrate is judged, the PLC sends action commands to the speed regulating motor 24 of the feeding mechanism 2, the electromagnetic valve group 411 of the cutting mechanism 4 and the servo motor 52 of the transferring and discharging mechanism 5, the speed regulating motor 24 controls the corresponding feeding roller 21 to start rotating, namely the feeding roller 21 starts feeding, and meanwhile, the electromagnetic valve group 411 controls the pneumatic cutting door 42 to open the discharge hole 222 of the feeding mechanism 2, so that materials can fall into the measuring hopper 31 and start new feeding and metering.

For example, when the weight of the material is insufficient, the weighing sensor feeds back the insufficient weighing signal to the weighing substrate, the weighing substrate judges whether the material is required to be fed in a fast manner or a slow manner, then the required instruction is fed back to the PLC according to the fast feeding and/or the slow feeding respectively, and the PLC gives action instructions to the corresponding components or mechanisms, and the action instructions are completed until the weighing sensor detects that the weight of the material in the weighing hopper meets the preset weight value and the material is qualified;

Or for example, when the weight of the material is insufficient and the operation scheme of each part is judged to be the unqualified material, when the weighing sensor feeds back the signal of the insufficient weighing to the weighing base plate, the weighing base plate can judge that the insufficient weighing belongs to the unqualified material according to a preset mode, but the feeding is not continued, but the unqualified material is finally discharged into the NG receiving box, at the moment, the weighing base plate feeds back the instruction that the feeding mechanism 2 is required to stop feeding, the cutting mechanism 4 closes the discharge hole 222, and simultaneously the NG opening and closing hopper 53 on the transferring and discharging mechanism 5 moves to the position right below the weighing hopper 31 to collect the unqualified material to the PLC, the PLC sends an action instruction to the speed regulating motor 24 of the feeding mechanism 2, the electromagnetic valve group 411 of the cutting mechanism 4 and the servo motor 52 of the transferring and discharging mechanism 5, the corresponding feeding roller 21 is controlled to stop rotating by the speed regulating motor 24, namely the feeding roller 21 stops feeding, and simultaneously the electromagnetic valve 411 controls the pneumatic cutting door 42 to close the discharge hole 222 of the feeding mechanism 2, so that the subsequent material is prevented from falling into the weighing hopper 31, and simultaneously the servo motor 52 controls the table 51 to move until the weighing hopper 53 moves to the position right below the weighing hopper 31 to finish the opening and closing state of the weighing hopper (for example, the opening and closing the weighing hopper is opened and closed at the position right below the weighing hopper is opened and closed).

The feeding mechanism 2 is further provided with a box body 22 and a speed regulating motor 24, the speed regulating motor 24 is a part of a control mechanism, the feeding roller 21 is composed of at least one tooth piece 211, a roller shaft 212 of the feeding roller 21 is connected with the speed regulating motor 24, the speed regulating motor 24 is connected with the box body 22, and the feeding roller 21 is positioned in the box body 22; the top of the box body 22 is provided with a feeding hole 221, the bottom of the box body 22 is provided with a discharging hole 222, the feeding hole 221 corresponds to the discharging channel 11, and the discharging hole 222 corresponds to the measuring hopper 31.

Preferably, the feeding roller 21 adopts a plurality of rubber tooth plates with the thickness of 2mm to splice (the cross sections of the tooth plates are gear-shaped), different herringbone angles can be spliced according to the requirements, the groove type 27 of different feeding rollers 21 is formed (namely, the groove type 27 is spliced by the tooth plate groove parts 211-1), and materials with different properties can be adapted. In the process of rotating the feeding roller 21, the groove 27 is used for loading quantitative materials (preferably powder materials), so that the feeding mechanism is convenient for stably, uniformly and accurately feeding materials, and meanwhile, the feeding mechanism is not easy to be blocked by split materials, and the failure rate is low.

The box 22 plays a role in protecting, installing and fixing the feeding mechanism 2, and the speed regulating motor 24 controls the rotation (such as starting rotation, stopping rotation, rotation speed and the like) and/or the rotation speed of the single feeding roller 21 to perform fast feeding and slow feeding.

The speed regulating motor 24 is detachably connected with the box body 22, after the feed roller, the roller shaft and the reduction gearbox of the speed regulating motor 24 are assembled into a whole, the speed regulating motor 24 is connected with the box body 22 through screws and the mounting plate 23, namely, the roller of the feed roller 21 and the roller shaft 22 directly extend into the box body 22, then the speed regulating motor 24 is mounted and fixed on the box body 22 through four screws 26 and the mounting plate 23, and when the speed regulating motor is detached, the whole of the speed regulating motor 24, the feed roller 21 and the roller shaft 22 can be taken out from the box body 22 only by loosening the four screws 26. The detachably connected connection is convenient for the disassembly and assembly of the speed regulating motor 24 and the box body 22 (namely, the connection can be simply disassembled), and the replacement or cleaning of the feeding roller 21.

The single-roller simple metering machine further comprises an equipment frame 7, wherein the material box 1, the feeding mechanism 2 and the transferring and discharging mechanism 5 are arranged on the equipment frame 7 or in the equipment frame 7; the bottom of the equipment frame 7 is provided with a control cabinet 9 (preferably below the transfer platform 51, the space utilization is more reasonable and efficient), and the weighing base plate is arranged in the control cabinet 9, so that the single-roller simple metering machine has more attractive appearance.

The transferring and discharging mechanism 5 comprises a guide rail 56 and a servo motor 52 which are arranged on the equipment frame 7, wherein a movable sliding block 57 is arranged on the guide rail 56, the sliding block 57 is connected with a transferring platform 51 for placing a receiving cup 58, the servo motor 52 controls the sliding block 57 to run on the guide rail 56 (for example, the servo motor 52 can drive the transferring platform 51 to move on the guide rail 56 through a gear 59-1 and a rack 59-2, at the moment, the servo motor 52 penetrates through the transferring platform 51 and then is connected with the gear 59-1, the rack 59-2 is fixed on one side of the transferring platform 51, and the gear 59-1 is meshed with the rack 59-2); the sliding block 57 drives the transfer platform 51 to move, so that the material receiving cup 58 is moved; the servo motor 52 is part of a control mechanism; the transferring and discharging mechanism 5 is used for receiving the materials from the metering mechanism.

Preferably, the bin 1 is arranged at the uppermost part of the equipment frame 7, the lower part of the bin 1 corresponds to the feed inlet 221 of the feeding mechanism 2, the bin 22 of the feeding mechanism 2 is connected at the middle upper part of the equipment frame 7, meanwhile, the cutting mechanism 4 is also connected to the equipment frame 7, the pneumatic cutting door 42 corresponds to the discharge outlet 222 of the feeding mechanism 2, the metering mechanism 3 is connected at the upper part of the equipment frame 7 and the metering hopper 31 corresponds to the discharge outlet 222 of the feeding mechanism 2, the lower part of the metering mechanism 3 corresponds to the transfer and discharge mechanism 5, the transfer and discharge mechanism 5 is connected at the lower part of the equipment frame 7, and the transfer platform 51 moves on the guide rail 56 (the guide rail 56 is fixed on the equipment frame 7) and drives the material receiving cup 58 to move so as to help the material receiving cup 58 receive the material corresponding to the metering hopper 31.

Under the premise of guaranteeing metering precision and speed, the simple metering machine with the single roller simplifies the structures of the box body 1 and the feeding mechanism 2, and simultaneously, the cutting mechanism 4 (such as the pneumatic control box 41, the electromagnetic valve group 411 and the like) is fully integrated inside the equipment frame 7, so that the whole equipment is compact, occupies a small space, simultaneously takes into account the operation space and the maintenance space, the equipment frame 7 is made of square steel pipes, the connection part is opened, all connecting cables are arranged inside the square steel pipes of the equipment frame 7, and the equipment is free of cables and exposed air pipes, and has attractive and neat appearance.

The transfer table 51 is provided with an NG open/close bucket 53, the NG open/close bucket 53 is composed of a movable portion 531 and a fixed portion 532, the equipment frame 7 is provided with a thimble 54 for pushing the movable portion 531 to open the NG open/close bucket 53, and an NG receiving box 55 is provided under the NG open/close bucket 53 in the open state. The NG collecting box 55 is preferably arranged at the edge part of the equipment frame 7, and does not occupy the space in the middle of the equipment frame 7; meanwhile, the NG opening and closing hopper 53 is arranged at the edge of the arrangement position of the material receiving cup 58, so that unqualified materials can be conveniently discharged into the NG material receiving box 55 when the first row of material receiving cups 58-1 receive materials and the NG opening and closing hopper 53 discharge unqualified materials, the two operations are simultaneously carried out, the running cycle time of the whole single-roller simple metering machine is saved, and the working efficiency of the single-roller simple metering machine is improved. The ejector pin 54 may be disposed on the apparatus frame 7, and when the NG opening/closing hopper 53 moves to a position right above the NG receiving box 55, the ejector pin 54 pushes the movable portion 531 open, so that the reject material in the fixed portion 532 falls into the NG receiving box 55. When the NG opening/closing hopper 53 is removed and not directly above the NG receiving box 55, the movable portion 531 blocks the bottom of the fixed portion 532, preventing the reject material in the fixed portion 532 from falling out.

The first option of the selecting function of the transferring and discharging mechanism 5 selects unqualified materials to be directly discharged into the receiving cup 58, and simultaneously displays the position of the receiving cup where the unqualified materials are positioned on an operation screen, and the unqualified materials are correspondingly taken out by manpower; at this time, a weighing sensor feeds back a signal (such as overweight or insufficient weighing) of unqualified materials in the weighing hopper 31 to a weighing substrate, the weighing substrate feeds back to the PLC to feed back the material receiving cup 58 according to a preset mode, but does not continue feeding, after the weighing substrate is judged, the feeding mechanism 2 is required to stop feeding, the cutting mechanism 4 closes the material outlet 222, and simultaneously the material receiving cup 58 on the material transferring and discharging mechanism 5 moves to a position right below the weighing hopper 31, the PLC sends an action command to the speed regulating motor 24 of the feeding mechanism 2, the electromagnetic valve group 411 of the cutting mechanism 4 and the servo motor 52 of the material transferring and discharging mechanism 5, the speed regulating motor 24 controls the corresponding material feeding roller 21 to stop rotating, namely the material feeding roller 21 stops feeding, meanwhile the electromagnetic valve group 411 controls the pneumatic cutting door 42 to cut off the material outlet 222 of the feeding mechanism 2, so that the material is prevented from falling into the weighing hopper 31, and simultaneously the servo motor 52 controls the platform 51 to move until the corresponding material receiving cup 58 moves to a position right below the weighing hopper, and the weighing hopper is opened (such as the weighing hopper 31 is opened and the corresponding material receiving cup 58 is closed, and the material receiving cup 58 is completed by the corresponding to the position is closed, and the manual operation is completed, and the material receiving cup is closed at the position of the time, and the weighing hopper is convenient to be opened and closed and the position corresponding to be discharged to the position and the material receiving cup is correspondingly closed.

A second option of selecting a function of the transfer and discharge mechanism 5: the weighing sensor feeds back a signal (such as overweight or underweighing) of unqualified materials in the weighing hopper 31 to the weighing substrate, the weighing substrate feeds back a command that the feeding mechanism 2 stops feeding, the cutting mechanism 4 closes the discharge hole 222 and simultaneously the NG opening and closing hopper 53 on the transferring and discharging mechanism 5 moves to the position right below the weighing hopper to collect the unqualified materials to the PLC after judging, the PLC sends an action command to the speed regulating motor 24 of the feeding mechanism 2, the electromagnetic valve group 411 of the cutting mechanism 4 and the servo motor 52 of the transferring and discharging mechanism 5, the speed regulating motor 24 controls the corresponding feeding roller 21 to stop rotating, namely the feeding roller 21 stops feeding, the electromagnetic valve group 411 controls the pneumatic cutting door 42 to close the discharge hole 222 of the feeding mechanism 2, the follow-up re-existing materials are prevented from falling into the weighing hopper 31, the weight of the unqualified materials is prevented from being increased, the servo motor 52 controls the table 51 to move until the NG opening and closing hopper 53 moves to the position right below the weighing hopper (namely, the weighing hopper at the position 311), the opening and closing of the weighing hopper 31 is completed by a spring, and the NG opening and closing of the weighing hopper 31 is stopped once, the weighing hopper is stopped, and the empty and the weighing hopper is convenient to be closed. And then the corresponding weighing hoppers 31 continue to fill qualified materials into the corresponding receiving cups 58 (such as the first row of receiving cups 58-1, the second row of receiving cups 58-2, the third row of receiving cups 58-3 and the fourth row of receiving cups 58-4 in the drawing, and the fifth row of positions correspond to the NG opening and closing hoppers 53), so that the materials in each receiving cup 58 are qualified in weighing. Meanwhile, unqualified materials discharged into the NG open-close hopper 53 temporarily exist in the NG open-close hopper 53, the next batch of materials starts to be metered (the next batch of materials starts to be metered again from the first row of receiving cups 58-1 and then sequentially goes to the fourth row of receiving cups 58-4), the transfer platform 51 moves the first row of receiving cups 58-1 to the position right below the weighing hopper 31 (namely, the position of a metering discharging point 311), the NG open-close hopper 53 moves to the rearmost end of the equipment frame 7 (at the moment, the position right below the NG open-close hopper 53 corresponds to the NG receiving box 55), the NG open-close hopper 53 is opened through the ejector pins 54 fixed on the equipment frame 7 (the movable part 531 is ejected by the actual ejector pins 54), and the unqualified materials in the NG open-close hopper 53 are discharged into the NG receiving box 55.

That is, once the material in the weighing hopper 31 is found to be unqualified by the weighing sensor, the transfer platform 51 moves once with the NG opening and closing hopper 53 to enable the unqualified material in the corresponding weighing hopper 31 to be next, then the transfer platform 51 moves to the original position with the NG opening and closing hopper 53, and the qualified material is continuously filled into the receiving cups with different rows according to the original sequence.

In embodiment 1, the second option is preferable for the selection function of the transfer/discharge mechanism 5.

Of course, the first option of selecting the functions of the transfer and discharge mechanism 5 and the second option of selecting the functions of the transfer and discharge mechanism 5 may be adopted simultaneously or individually.

The control mechanism also comprises an operation screen 6, and the operation screen 6, the speed regulating motor 24, the electromagnetic valve group 411 and the servo motor 52 form a control system for controlling the simple single-roller metering machine to operate. The control mechanism is used for controlling the operation of the feeding mechanism, the cutting mechanism and the transferring and discharging mechanism.

The control mechanism also comprises an operation screen 6, a PLC controller and a speed regulator for controlling the speed of the speed regulating motor 24 (the PLC controller can indirectly control the speed regulating motor 24 to operate through the speed regulator), and the operation screen 6, the PLC controller, the speed regulating motor 24, the electromagnetic valve group 411 and the servo motor 52 form a control system for controlling the operation of the single-roller simple metering machine together. The PLC controller and the speed regulator can also be arranged in the control cabinet, so that the single-roller simple metering machine has more attractive appearance.

The operation screen 6 is used for setting a weight value to be weighed and a precision requirement (such as weighing 50g and requiring +/-1 g of precision), meanwhile, setting a value of quick adding and slow adding (such as setting that the front 45g is quick adding and the rear 5g is slow adding to ensure the precision), starting the single-drum simple metering machine after setting is finished, opening the cutting mechanism at the moment, quickly adding the feeding mechanism 2 into the metering hopper 31, when the weight in the metering hopper 31 reaches 45g, giving a slow adding signal by the control system, reducing the rotating speed of the motor of the feeding mechanism 2, and starting slow adding. When the weight of the materials in the weighing hopper 31 reaches the set weight of 50g, the control system gives a stop signal, the speed regulating motor 24 of the feeding mechanism 2 stops, and meanwhile, the cutting mechanism is closed, so that the materials in the feeding mechanism 2 are prevented from leaking into the weighing hopper 31; after the weighing hopper 31 discharges the material into the receiving cup 58 of the transfer and discharge mechanism 5, the next weighing is started. The feeding mechanism 2 has the function of accurately feeding materials into the metering mechanism, and only the feeding mechanism can accurately feed materials (especially small-amount feeding or slow feeding) so as to ensure the blanking precision of the materials in the metering hopper 31;

In the operation process of the single-roller simple metering machine, materials enter the feed box 1, enter the feeding mechanism 2 through the blanking channel 11 at the bottom of the feed box 1, the feeding mechanism 2 is controlled to operate by the speed regulating motor 24, then the materials of the feeding mechanism 2 fall into the metering hopper 31, after being monitored and processed by the weighing sensor and the weighing substrate, the metering hopper 31 feeds back information to the PLC, the PLC gives action instructions, the electromagnetic valve group 411 and the servo motor 52 are controlled, the electromagnetic valve group 411 controls the switching and the operation of the cutting mechanism 4, and meanwhile, the servo motor 52 controls the transfer and discharge mechanism 5 to operate so that the receiving cup 58 is filled with qualified materials, the NG opening and closing hopper 53 is filled with unqualified materials, and the NG opening and closing hopper 53 falls the unqualified materials into the NG receiving box 55 through the ejector pin 54.

The number of the blanking channels 11 is 2 or 3 or 5 or 6, and the specific number of the blanking channels can be adjusted according to actual conditions; in this embodiment 1, the number of the discharging channels 11 is 4, the number of the receiving cups 58 is four rows of 16 cups, and the number of the receiving cups can be also adjusted to be single row 4 cups, double row 8 cups or three rows 12 cups according to practical situations.

In addition, the material box 1 is preferably also provided with a dust removing opening 8, so that the interior of the material box 1 is helped to remove dust in the blanking process, and the quality of materials is improved;

preferably, a protective cover 25 is arranged outside the speed regulating motor 24, so that the speed regulating motor 24 outside the box body 22 is protected from dust and dust.

An operation method of a single-roller simple metering machine relates to the single-roller simple metering machine, which comprises the following specific steps:

Firstly, starting a single-roller simple metering machine, and setting a metering mode (comprising the weight value and the precision requirement required by setting qualified materials, and/or meeting the conditions and the speed of fast feeding and/or slow feeding and/or the working time range of a single metering link) through an operation screen 6;

In the embodiment 1, the measurement mode is set to ensure the accuracy by setting the front 45g to be fast feeding and the rear 5g to be slow feeding under the assumption that 50g needs to be weighed, the accuracy is required to be +/-1 g, and the material weight in the measuring hopper is smaller than 45g at the moment, the measuring hopper is in the fast feeding stage; the working time of a single metering link can be set to be S seconds (at the moment, a timer is additionally arranged on the metering mechanism, the timer feeds back information to the PCL and is controlled by a PLC to run);

secondly, injecting materials into a feeding mechanism 2 through a material box 1, and synchronously discharging the materials into a metering hopper 31 by the feeding mechanism;

at the moment, a cutting mechanism can be additionally arranged, and the cutting mechanism is matched with a feeding mechanism to form blanking and pause blanking.

Thirdly, the weighing condition and judgment information according to the weighing mode are fed back to the control mechanism by the weighing mechanism 3, and the control mechanism is operated according to the feedback of the weighing mechanism in the following mode:

A. when the weight of the material of the weighing hopper 31 reaches the weight value range of the qualified material, the feeding mechanism 2 pauses discharging, the pneumatic cut-off door 42 of the cut-off mechanism 4 is closed, and the control unit controls the receiving cup 58 of the transferring and discharging mechanism 5 to receive the qualified material; for example, the operation is performed according to the operation scheme of each component when the materials are qualified, and the repeated description is omitted.

Or (b)

B. when the weight of the material of the weighing hopper 31 is lower than the weight value range of the qualified material, the control unit controls the feeding mechanism to continue discharging,

(1) For example, the operation according to the operation scheme of each component when the materials need to be fed quickly is not repeated.

(2) For example, the operation according to the operation scheme of each component when the materials need to be slowly fed is not repeated.

After the weight of the material reaches the weight value range of the qualified material, the feeding mechanism 2 pauses the discharging, the pneumatic cut-off door 42 of the cut-off mechanism 4 is closed, and the control unit controls the receiving cup 58 of the transferring and discharging mechanism 5 to receive the qualified material (i.e. continue to operate according to the scheme A);

(3) The control unit directly judges that the material of the weighing hopper 31 with the weight lower than the weight value range of the qualified material belongs to the unqualified material (or the material of the weighing hopper 31 is considered to be the unqualified material when the weight of the material is lower than the weight value range of the qualified material in S seconds of the working time range of a single metering link), the feeding mechanism 2 pauses the feeding, the pneumatic cutting door 42 of the cutting mechanism 4 is closed, and the control unit controls the material receiving cup 58 of the transferring and discharging mechanism 5 or a specific container (such as an NG opening and closing hopper and/or an NG material receiving box) to receive the unqualified material; for example, the operation scheme of each component when the weight of the material is insufficient and the unqualified material is determined is not repeated.

Or (b)

C. When the weight of the material of the weighing hopper 31 is higher than the weight value range of the qualified material, the control unit directly judges that the material of the weighing hopper 31 with the weight higher than the weight value range of the qualified material belongs to the unqualified material, the feeding mechanism 2 pauses the discharging, the pneumatic cutting door 42 of the cutting mechanism 4 is closed, and the control unit controls the material receiving cup 58 or a specific container (such as an NG opening and closing hopper and/or an NG material receiving box) of the transferring and discharging mechanism 5 to receive the unqualified material; for example, the operation scheme of each component when the weight of the material is overweight is not repeated.

And fourthly, the feeding mechanism 2 is started again to perform new round of blanking, the metering mechanism 3 performs new round of metering and feeds back to the control mechanism synchronously, and the control mechanism performs operation according to the first step to the third step, so that the operation is reciprocated. When a new round of blanking starts, the NG opening and closing hopper (53) just runs to the thimble (54), the thimble (54) pushes the NG opening and closing hopper (53) open, and NG materials are discharged into the NG receiving box (55) below.

The simple metering function of multiple split material types can be realized by adjusting and setting the metering mode according to different conditions and then repeating the operation.

The operation method of the simple single-roller metering machine can realize intelligent judgment, mechanized operation, precise metering, high precision and simple operation.

The receiving cup or the NG receiving box for receiving the unqualified materials is manually taken away singly one by one or is periodically processed for receiving the unqualified materials for a plurality of times, and the two modes can be selected on the operation screen by a user according to the production requirements of the user.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the invention.

Claims

1. The utility model provides a single cylinder plain type measuring machine, includes workbin (1), feeding mechanism (2), metering mechanism (3), moves and carries bin outlet mechanism (5), control mechanism, its characterized in that: the material box (1) is communicated with the feeding mechanism (2), the feeding mechanism (2) corresponds to the metering mechanism (3), the metering mechanism (3) corresponds to the transferring and discharging mechanism (5), and the control mechanism controls the feeding mechanism (2) to operate, the metering mechanism (3) to operate and the transferring and discharging mechanism (5) to operate;

The feed box (1) comprises at least one blanking channel (11), the feeding mechanism (2) comprises at least one feeding roller (21), the metering mechanism (3) comprises at least one metering hopper (31), and the transferring and discharging mechanism (5) comprises at least one receiving cup (58);

each discharging channel (11) corresponds to one feeding roller (21), each feeding roller (21) corresponds to one weighing hopper (31), and each weighing hopper (31) corresponds to at least one receiving cup (58).

2. A single-drum plain type metering machine according to claim 1, characterized in that: the metering mechanism (3) further comprises a weighing sensor and a weighing base plate; each weighing hopper (31) is provided with a weighing sensor, the weighing sensors feed information back to a weighing base plate, and the weighing base plate is a part of a control mechanism.

3. A single-drum plain type metering machine according to claim 2, characterized in that: the feeding mechanism (2) is further provided with a box body (22) and a speed regulating motor (24), the speed regulating motor (24) is a part of the control mechanism, the feeding roller (21) is composed of at least one tooth piece (211), a roller shaft (212) of the feeding roller (21) is connected with the speed regulating motor (24), the speed regulating motor (24) is connected with the box body (22), and the feeding roller (21) is positioned in the box body (22); the top of the box body (22) is provided with a feeding hole (221), the bottom of the box body (22) is provided with a discharging hole (222), the feeding hole (221) corresponds to the discharging channel (11), and the discharging hole (222) corresponds to the weighing hopper (31).

4. A single-drum plain type metering machine according to claim 3, characterized in that: a cutting mechanism (4) is further arranged between the feeding mechanism (2) and the metering mechanism (3), and the cutting mechanism (4) is controlled by a control mechanism to operate; the cutting mechanism comprises a pneumatic control box (41) and a pneumatic cutting door (42), wherein the pneumatic control box (41) is provided with an electromagnetic valve group (411), the pneumatic control box (41) is communicated with a compressed air inlet (412), and a filtering regulating valve (414) and a manual ball valve (413) are arranged at the compressed air inlet (412); the pneumatic cut-off door (42) is arranged at the discharge hole (222) of the box body (22), and the pneumatic cut-off door (42) runs under the control of the pneumatic control box (41) and the electromagnetic valve group (411) and forms a closed state or an open state with the discharge hole (222) of the box body (22); the electromagnetic valve group (411) is part of a control mechanism.

5. A single-drum plain type metering machine according to claim 1 or 2 or 3 or 4, characterized in that: the speed regulating motor (24) is detachably connected with the box body (22); the single-roller simple metering machine further comprises an equipment frame (7), and the feed box (1), the feeding mechanism (2) and the transferring and discharging mechanism (5) are arranged on the equipment frame (7) or in the equipment frame (7); a control cabinet (9) is arranged at the bottom of the equipment frame (7);

The transfer and discharge mechanism (5) comprises a guide rail (56) arranged on the equipment frame (7) and a servo motor (52), wherein a movable slide block (57) is arranged on the guide rail (56), the slide block (57) is connected with a transfer platform (51) for placing a receiving cup (58), and the servo motor (52) controls the slide block (57) to run on the guide rail (56); the servo motor (52) is part of a control mechanism;

the weighing base plate is arranged in a control cabinet (9); and/or NG opening and closing hopper (53) is arranged on the transfer platform (51), the NG opening and closing hopper (53) consists of a movable part (531) and a fixed part (532), the equipment frame (7) is provided with a thimble (54) for pushing the movable part (531) to enable the NG opening and closing hopper (53) to be in an open state, and a NG receiving box (55) is arranged under the NG opening and closing hopper (53) in the open state.

6. The single drum plain type metering machine of claim 5, wherein: the control mechanism further comprises an operation screen (6), a PLC controller and a speed regulator for controlling the speed of the speed regulating motor (24), wherein the operation screen (6), the PLC controller, the speed regulator, the speed regulating motor (24), the electromagnetic valve group (411) and the servo motor (52) form a control system for controlling the operation of the single-roller simple metering machine.

7. The single drum plain type metering machine of claim 6, wherein: the number of the blanking channels (11) is 2 or 3 or 5 or 6; or 4 discharging channels (11) and 4 receiving cups (58) are single-row 4 cups or double-row 8 cups or three-row 12 cups or four-row 16 cups; the equipment frame (7) is made of square steel pipes, and the joints are all open; the PLC controller and the speed regulator are both arranged in the control cabinet (9); the feed box (1) is also provided with a dust removal port (8); a protective cover (25) is arranged outside the speed regulating motor (24).

8. The utility model provides a single cylinder plain type metering machine, including the workbin that is used for inserting the external material and to the unloading of feeding mechanism, be used for controlling the feeding mechanism of unloading speed and unloading volume, be used for cutting off the shutdown mechanism of then stopping the feed to feeding mechanism unloading, be used for carrying out the metering mechanism of metering to the material that feeding mechanism comes out, be used for carrying out the material that the metering mechanism comes out and carry out the material and carry the unloading mechanism, carry the unloading mechanism and be equipped with NG receipts workbin (55) that are used for discharging the NG material, a control mechanism for controlling feeding mechanism, shutdown mechanism, carry the operation of unloading mechanism, its characterized in that: the feed box is communicated with the feeding mechanism, the feeding mechanism corresponds to the metering mechanism, the metering mechanism corresponds to the transferring and discharging mechanism, and the cutting mechanism is matched with the feeding mechanism;

9. A method of operating a single-cylinder plain type metering machine, relating to a single-cylinder plain type metering machine as claimed in any one of claims 6 to 8, comprising the steps of:

Firstly, starting a single-roller simple metering machine, and setting a metering mode (comprising a weight value range of qualified materials) through an operation screen (6);

secondly, injecting materials into a feeding mechanism (2) through a material box (1), and synchronously discharging the materials into a measuring hopper (31) by the feeding mechanism;

Thirdly, the weighing condition and judgment information according to a weighing mode are fed back to the control mechanism by the metering mechanism (3), and the control mechanism is operated according to the feedback of the metering mechanism in the following mode:

When the weight of the material in the weighing hopper (31) reaches the weight value range of the qualified material, the feeding mechanism (2) pauses discharging, the pneumatic cutting door (42) of the cutting mechanism (4) is closed, and the control unit controls the receiving cup (58) of the transferring and discharging mechanism (5) to receive the qualified material;

Or when the weight of the material of the weighing hopper (31) is lower than the weight value range of the qualified material, the control unit controls the feeding mechanism to continue discharging until the weight of the material reaches the weight value range of the qualified material, the feeding mechanism (2) pauses discharging, the pneumatic cutting door (42) of the cutting mechanism (4) is closed, the control unit controls the receiving cup (58) of the transferring and discharging mechanism (5) to receive the qualified material, or the control unit directly judges that the material of the weighing hopper (31) with the weight lower than the weight value range of the qualified material belongs to the unqualified material, the feeding mechanism (2) pauses discharging, and the control unit controls the receiving cup (58) or the NG opening and closing hopper (53) of the transferring and discharging mechanism (5) to receive the unqualified material;

Or when the weight of the material of the weighing hopper (31) is higher than the weight value range of the qualified material, the control unit directly judges that the material of the weighing hopper (31) with the weight higher than the weight value range of the qualified material belongs to the unqualified material, the feeding mechanism (2) pauses the discharging, the pneumatic cutting door (42) of the cutting mechanism (4) is closed, and the control unit controls the receiving cup (58) or the NG opening and closing hopper (53) of the transferring and discharging mechanism (5) to receive the unqualified material;

And fourthly, starting the feeding mechanism (2) again to perform a new round of blanking, performing a new round of metering by the metering mechanism (3), synchronously feeding back to the control mechanism, performing operation according to the first step to the third step by the control mechanism, and thus, reciprocating, wherein when the new round of blanking starts, the NG opening and closing bucket (53) just runs to the thimble (54), the thimble (54) pushes the NG opening and closing bucket (53) open, and the NG material is discharged into the NG receiving box (55) below.

10. A method of operating a single drum plain type metering machine as claimed in claim 9, wherein: the metering mode also comprises the weight value and the precision requirement required by the qualified materials, and/or the condition and the speed which meet the fast feeding and/or the slow feeding, and/or the working time range of a single metering link;

The material of the weighing hopper (31) is identified as an unqualified material in the working time range of a single metering link when the weight of the material is lower than the weight value range of the qualified material;

The receiving cup (58) or the NG receiving box (55) for receiving the unqualified materials is singly and manually removed from the receiving cup (58) one by one or the NG receiving box (55) for receiving the unqualified materials for a plurality of times is processed periodically.