CN114955497B

CN114955497B - First-in first-out buffer memory conveying method and device

Info

Publication number: CN114955497B
Application number: CN202210750071.8A
Authority: CN
Inventors: 李国林; 罗跃; 王登松; 张俊; 张继心; 李兵; 周佼
Original assignee: Kunming Dingcheng Technology Co ltd
Current assignee: Kunming Dingcheng Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2024-03-29
Anticipated expiration: 2042-06-29
Also published as: CN114955497A

Abstract

The invention discloses a first-in first-out buffer conveying method and device, and relates to the technical field of tobacco machinery. Comprising the following steps: an upstream conveying device, a memory, a downstream conveying device and an electric control system; the outlet of the upstream conveying device is communicated with the inlet of the storage; the outlet of the reservoir communicates with the inlet of the downstream delivery device. The flexible matching of the production speed between the first-in first-out buffer conveying device and the cigarette making machine and the packaging machine can be realized; the height adjustment method for the conveyed materials solves the problem that the conveyed materials are disordered due to excessive rolling of the conveyed materials caused by the height difference of the mechanical structure of the conveying belt and the conveying steel belt of the storage in the conveying process of the conveyed materials; in the process of bending and conveying rod-shaped materials in the storage, the problem of bending and blocking caused by too high bending materials and the problem of rod disorder caused by too large material rolling amplitude caused by too low bending materials are solved.

Description

First-in first-out buffer memory conveying method and device

Technical Field

The invention relates to the technical field of tobacco machinery, in particular to a first-in first-out buffer conveying method and device.

Background

In an automatic production line, when one of the upstream and downstream devices fails, one or more buffer storage conveying devices are arranged between the upstream and downstream devices to balance the material release of the upstream device or the material supply of the downstream device, so that the production device achieves a dynamic balance, the continuous production is ensured, and the problems of high outage rate, influence on the production efficiency and the like caused by the equipment failure are solved.

The conveying technology of the existing buffer conveying device has two kinds: one is a first-in last-out conveyance mode, and the other is a first-in first-out conveyance mode. The buffer transport mode of the first in and last out refers to: on the main line of the up and down stream equipment, a branch line with buffer transportation function is used for absorbing or releasing the materials generated by the speed difference of the up and down stream equipment, the branch line has a common path for the outlet and inlet, the function principle is similar to that of a stack, the process is characterized in that the materials buffered first are released last; the first-in first-out storage and transportation mode refers to: a buffer capacity adjusting device capable of changing the length of a conveying path is connected in series on a conveying main line of upstream and downstream equipment, the device realizes buffer storage of materials by changing the length of the conveying path, and the functional principle is similar to a queue form.

The buffer memory conveying device between the current tobacco industry wrapping production lines still stays in a first-in last-out mode, and the production process flow is as follows: when the production speed of the cigarette making machine is higher than that of the packaging machine, redundant materials which are conveyed to the packaging machine by the cigarette making machine at the moment are retained in the buffer conveying device; when the production speed of the packing machine is higher than that of the cigarette making machine, the materials which are conveyed to the packing machine by the cigarette making machine are supplemented by the buffer conveying device. According to the technical process of the first-in last-out mode, when the production speed of the packaging machine is higher than that of the cigarette making machine, materials used by the packaging machine are respectively supplied to the production materials of the current cigarette making machine and the buffer conveying device, and the materials belong to mixed materials with different timeliness.

The first-in first-out buffer mode ensures that the material aging is guaranteed and becomes the priority of a tobacco industry wrapping production line gradually, the demand of the market on first-in first-out equipment is urgent, a plurality of equipment manufacturers are induced to explore the design and implementation method of the first-in first-out device, wherein the application number is 201811476099.7, the name is 201811476099.7, namely the first-in first-out buffer conveying device with adjustable storage volume is representative of the first-in first-out device, but the patent only gives out a mechanical structure for realizing first-in first-out buffer, but in the practical application, in the process of conveying the rod-shaped material in a storage, the mechanical structure of a storage conveying belt and a conveying steel belt has a height difference, so that the rod-shaped material can roll excessively when the rod-shaped material excessively conveys the belt and conveys the steel belt on an ascending and descending slope, and the problem of rod-shaped material messing is caused; in the process of bending and conveying rod-shaped materials in the storage, the problem of bending and blocking possibly caused by the fact that the bending materials are too high, and the problem of rod disorder caused by the fact that the rolling amplitude of the materials possibly caused by the fact that the bending materials are too low are solved. Aiming at the problems, how to control an execution object in a memory, how to effectively connect upstream and downstream equipment, how to solve the problem of height adjustment of a bar stock passing bent material layer and how to ensure personal safety of the equipment is the problem to be solved.

Disclosure of Invention

According to the invention, in the conveying process of the rod-shaped materials in the storage, the mechanical structure of the conveying belt and the conveying steel belt of the storage has a height difference, so that the rod-shaped materials can roll excessively when the conveying belt and the conveying steel belt are excessively conveyed on an ascending and descending slope, and the problem of rod disorder of the conveying materials is caused; in the process of bending and conveying rod-shaped materials in the storage, the problem of bending and blocking possibly caused by the fact that the bending materials are too high, and the problem of rod disorder caused by the fact that the rolling amplitude of the materials possibly caused by the fact that the bending materials are too low are solved. Aiming at the problems, how to control an execution object in a memory, how to effectively connect upstream and downstream equipment, how to solve the problem of how to adjust the height of a bar material passing bent material layer and how to ensure the personal safety of the equipment is the problem to be solved, the invention is provided.

In order to solve the technical problems, the invention provides the following technical scheme:

in one aspect, the invention provides a first-in first-out buffer conveying device, which comprises an upstream conveying device, a memory, a downstream conveying device and an electric control system.

Wherein the outlet of the upstream conveying device is communicated with the inlet of the storage; the outlet of the reservoir communicates with the inlet of the downstream delivery device.

The electronic control system is used for acquiring specified parameters of an upstream conveying device, a memory and a downstream conveying device of the first-in first-out buffer conveying device and controlling the material conveying state of the first-in first-out buffer conveying device according to the acquired specified parameters; wherein, the material conveying state includes: the conveying speed of the upstream conveying device and/or the conveying speed of the downstream conveying device and/or the buffer capacity of the storage device and/or the conveying material layer height of the storage device.

Optionally, the upstream conveying device comprises an upstream sampling conveying channel, an upstream lifter, an overhead horizontal conveying channel and an upstream material layer height detection sensor.

The inlet of the upstream sampling conveying channel is in butt joint with upstream feeding equipment of the first-in first-out buffer conveying device, the outlet of the upstream sampling conveying channel is communicated with the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel, and the outlet of the upstream lifting machine and the outlet of the overhead horizontal conveying channel are communicated with the inlet of the storage.

The upstream material layer height detection sensor is arranged at the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel and is used for detecting the height of a first material layer at the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel and sending the detected first material layer height to the electric control system.

The electronic control system controls the conveying speed of the upstream sampling conveying channel to synchronize the upstream feeding speed according to the upstream feeding speed sent by the upstream feeding equipment of the first-in first-out buffer conveying device; the electric control system also controls the conveying speed of the upstream lifter and the overhead horizontal conveying channel according to the upstream feeding speed, the first material layer height and the preset fourth material layer height at the inlet of the storage.

Optionally, the downstream conveying device comprises a downstream sampling conveying channel, a downstream lifting machine, an overhead horizontal conveying channel, a falling mouth material layer height detection sensor and a downstream material layer height detection sensor.

The outlet of the storage is connected to downstream external connection equipment through a downstream sampling conveying channel, a downstream lifting machine and an overhead horizontal conveying channel in sequence.

The falling port material layer height detection sensor is arranged at the outlet of the downstream elevator and the overhead horizontal conveying channel and is used for detecting the height of a third material layer at the outlet of the downstream elevator and the overhead horizontal conveying channel and sending the detected height to the electric control system.

The downstream material layer height detection sensor is arranged at the inlet of the downstream lifting machine and the inlet of the overhead horizontal conveying channel and is used for detecting the height of a second material layer at the inlet of the downstream lifting machine and the inlet of the overhead horizontal conveying channel and sending the second material layer to the electric control system.

The electric control system also controls the conveying speed of the downstream lifter and the overhead horizontal conveying channel according to the downstream material taking speed sent by the downstream feeding equipment of the first-in first-out buffer conveying device, the height of the second material layer, the height of the third material layer and the height of a preset fourth material layer at the inlet of the storage.

Optionally, the storage is in a cylindrical structure and comprises a cylinder type conveying steel belt rack, a plurality of buffer conveying units and a buffer capacity adjusting device.

The cylinder type conveying steel belt rack comprises a cylinder type bracket and a plurality of layers of annular conveying steel belts arranged on the cylinder type bracket; the inner ring and the outer ring of the annular conveying steel belt have height difference, and the conveying directions of the adjacent annular conveying steel belts are opposite.

The buffer conveying units are longitudinally arranged along the periphery of the cylinder type bracket and are connected end to end, and each buffer conveying unit is arranged on two adjacent upper and lower layers of conveying steel belts; wherein the longitudinal direction is a direction parallel to the axial direction of the cylinder bracket.

The buffer capacity adjusting device is connected with the buffer conveying units; the electric control system also controls the buffer capacity adjusting device to adjust the buffer capacity of at least one buffer conveying unit according to the material conveying speeds of the inlet and the outlet of the memory.

Optionally, each buffer conveying unit comprises an upper buffer conveying unit, a lower buffer conveying unit, a moving end bend, a fixed end bend, a moving end bend material layer height detection sensor and a fixed end bend material layer height detection sensor.

The material outlet end of the upper layer buffer conveying unit is a suspension end, and an arc-shaped movable end bend protruding outwards is arranged on the outer side of the suspension end.

The material inlet end of the lower layer buffer conveying unit is connected with the inner side of the lower end of the movable end bend, the material outlet end of the lower layer buffer conveying unit is a suspension end, and the outer side of the suspension end is provided with an outwards convex arc-shaped fixed end bend; the inner side of the lower end of the fixed end bend is connected with the material inlet end of the upper layer buffer conveying unit of the next buffer conveying unit.

The upper buffer conveying unit comprises a fixed-end downhill conveying belt, an upper conveying steel belt and a buffer uphill conveying belt which are sequentially arranged along the conveying direction of the materials.

The lower layer buffer conveying unit comprises a buffer downhill conveying belt, a lower layer conveying steel belt and a fixed end uphill conveying belt which are sequentially arranged along the conveying direction of the materials.

The movable end curve material layer height detection sensor is arranged on the outer side of the circular arc of the movable end curve and used for detecting whether the material layer height of the movable end curve exceeds a first preset height threshold value or not and sending a detection result to the electric control system.

The fixed-end curve material layer height detection sensor is arranged on the outer side of the circular arc of the fixed-end curve and used for detecting whether the material layer height of the fixed-end curve exceeds a first preset height threshold value or not and sending a detection result to the electric control system.

Optionally, the buffer capacity adjusting device comprises a fixed mounting station assembly and a driving assembly.

The fixed mounting station assembly is used for fixing the ascending conveying belt, the moving end bend and the descending conveying belt of the buffer conveying unit on the cylinder type support.

The driving assembly is used for driving the ascending conveying belt, the moving end bend and the descending conveying belt of each buffer conveying unit to horizontally move along the circumferential direction of the cylinder type support, so that buffer capacity adjustment of the buffer conveying units is realized by adjusting the distance between the moving end bend and the fixed end bend.

Optionally, the buffer capacity adjusting device further comprises a first sensor and a second sensor which are arranged in the cylinder type conveying steel belt rack; the drive assembly carries a position encoder.

The first sensor is arranged at the empty limit position of the buffer capacity adjusting device; the empty limit position is the position of the corresponding buffer capacity adjusting device when the buffer capacity of the memory is minimum.

The second sensor is arranged at the full limit position of the buffer capacity adjusting device; the full limit position is the position of the corresponding buffer capacity adjusting device when the buffer capacity of the memory is maximum.

The position encoder is used for detecting the real-time position of the buffer capacity adjusting device and sending the real-time position to the electric control system, and the electric control system is also used for receiving trigger signals of the first sensor and the second sensor.

Optionally, the buffer capacity adjusting device further comprises a movable end anti-pinch safety monitoring sensor.

The movable end anti-pinch safety monitoring sensor is arranged at the top end of the buffer capacity adjusting device, detects whether a shielding object exists in the moving path direction of the buffer capacity adjusting device from top to bottom, and generates an anti-pinch pulse signal to be sent to the electric control system when detecting that the shielding object exists in the moving path direction of the buffer capacity adjusting device.

The electric control system is further used for triggering the stop alarm of the first-in first-out buffer conveying device when the movable end curve material layer height detection sensor and/or the fixed end curve material layer height detection sensor detects that the material layer height of the movable end curve and/or the duration of the material layer height of the fixed end curve exceeds a first preset height threshold exceeds a preset time length and/or when the anti-pinch pulse signal is received.

In another aspect, the present invention provides a method for delivering a first-in first-out buffer, which is implemented by a first-in first-out buffer delivering device, and includes:

s1, acquiring specified parameters of an upstream conveying device, a memory and a downstream conveying device of a first-in first-out buffer conveying device; the first-in first-out buffer memory conveying device comprises a memory, an upstream conveying device connected to an inlet of the memory and a downstream conveying device connected to an outlet of the memory.

S2, controlling the material conveying state of the first-in first-out buffer conveying device according to the specified parameters; wherein, the material conveying state includes: the conveying speed of the upstream conveying device and/or the conveying speed of the downstream conveying device and/or the buffer capacity of the storage device and/or the conveying material layer height of the storage device.

Optionally, S1 includes:

the first layer height and the upstream feed rate at the inlet of the upstream conveyor are collected in real time.

S2, including:

and controlling the first conveying speed of the upstream conveying device when the upstream feeding speed is matched at the current moment according to the upstream feeding speed, the first material layer height and the preset fourth material layer height at the inlet of the storage.

Optionally, S1 includes:

and collecting the height of the second material layer at the inlet of the downstream conveying device, the height of the third material layer at the outlet of the downstream conveying device and the downstream material taking speed in real time.

S2, including:

and controlling the fourth conveying speed of the downstream conveying device when the downstream material taking speed is matched at the current moment according to the third material layer height, the downstream material taking speed and the preset fourth material layer height at the inlet of the storage.

And controlling the third conveying speed of the inlet of the downstream conveying device at the current moment according to the second material layer height, the fourth material layer height and the fourth conveying speed.

Optionally, the first-in first-out buffer conveying device, S1, for claim 5 further comprises:

acquiring a first conveying speed V of an upstream conveying device at the current moment in real time ₁ And a third conveying speed V of the inlet of the downstream conveying device ₃ And acquiring the cache capacity state of the memory in real time.

S2, further comprising:

step A20: according to the formulaThe horizontal movement along the circumference of the cylinder bracket required by calculating the curve of the moving end at the current momentVelocity V of (2) ₂₂ The method comprises the steps of carrying out a first treatment on the surface of the Where n is the total number of buffer transport units in the memory.

Step A30: comparing the speed V of the horizontal movement along the circumference of the cylinder bracket required by the moving end bend at the current moment ₂₂ And a size of 0.

Step A40: if the current moment V ₂₂ If the speed is smaller than 0, controlling the curve of the moving end to be at a speed V along the circumference of the cylinder type bracket ₂₂ Move horizontally in the direction of decreasing the buffer capacity of the buffer transport unit, and then return to step A20 until any time V ₂₂ Stopping when the buffer capacity of the memory is equal to 0 or stopping when the buffer capacity of the memory reaches the minimum capacity; if the current moment V ₂₂ If the speed is greater than 0, controlling the curve of the moving end to be at a speed V along the circumference of the cylinder type bracket ₂₂ Move horizontally in a direction to increase the buffer capacity of the buffer transport unit, and then return to execute step A20 until any time V ₂₂ Stopping when the buffer capacity of the memory is equal to 0 or stopping when the buffer capacity of the memory reaches the maximum capacity.

Optionally, S1 further includes:

and acquiring a detection result of whether the height of the material layer of the movable end curve of each buffer conveying unit exceeds a first preset height threshold at the current moment and a detection result of whether the height of the material layer of the fixed end curve exceeds a second preset height threshold.

S2, further comprising:

step B10: controlling the synchronous relation of the conveying speeds among different conveying positions of the xth buffer conveying unit according to the first conveying speed, the third conveying speed and the total number of buffer conveying units in the memory at the current moment; the synchronous relation between different conveying positions of the xth buffer conveying unit comprises the following steps: the conveying speeds of the fixed-end downhill conveying belt and the upper-layer conveying belt of the x-th buffer conveying unit are synchronous, the conveying speeds of the lower-layer conveying belt and the fixed-end uphill conveying belt of the x-th buffer conveying unit are synchronous, and the conveying speeds of the buffer uphill conveying belt and the buffer downhill conveying belt of the x-th buffer conveying unit are synchronous; x=1, 2, …, n.

Step B20: if the height of the material layer of the moving end bend of the xth buffer conveying unit at the current moment exceeds a first preset height threshold value, controlling the conveying speeds of the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit to synchronously expand by a first multiple, or if the height of the material layer of the moving end bend of the xth buffer conveying unit at the current moment does not exceed the first preset height threshold value, controlling the conveying speeds of the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit to synchronously reduce by a second multiple; and/or if the height of the material layer of the fixed end curve of the xth buffer conveying unit at the current moment exceeds a first preset height threshold value, controlling the conveying speed of the lower layer conveying steel belt of the xth buffer conveying unit and the conveying speed of the fixed end ascending conveying belt to synchronously expand by a third multiple, or if the height of the material layer of the fixed end curve of the xth buffer conveying unit at the current moment does not exceed the first preset height threshold value, controlling the conveying speed of the lower layer conveying steel belt of the xth buffer conveying unit and the conveying speed of the fixed end ascending conveying belt to synchronously reduce by a fourth multiple; wherein the first multiple and the third multiple are equal or unequal, and the second multiple and the fourth multiple are equal or unequal.

Optionally, after step B10, S2 further includes: the transport speeds of the different transport positions of the xth buffer transport unit are corrected.

Correcting the conveying speed of different conveying positions of the xth buffer conveying unit comprises the following steps:

correcting the conveying speed of the fixed-end downhill conveying belt of the xth buffer conveying unit to K ₂ ×V _s [x-1]Correcting the conveying speed of the fixed-end ascending conveying belt of the xth buffer conveying unit to K ₂ ×V _s [x]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit to K ₂ ×V _m [x]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the upper layer conveying steel belt of the xth buffer conveying unit to K ₃ ×V _s [x-1]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the lower conveying steel belt of the xth buffer conveying unit to K ₃ ×V _s [x]；

Wherein V is _s [x-1]The conveying speeds of the fixed-end downhill conveying belt and the upper-layer conveying steel belt of the xth buffer conveying unit determined in the step B11, V _s [x]For the determination in step B11The conveying speed of the lower layer conveying steel belt and the fixed end ascending conveying belt of the x buffer conveying unit, V _m [x]B11, conveying speeds of a buffer ascending conveying belt and a buffer descending conveying belt of the x buffer conveying unit are determined; k (K) ₂ Taking the second correction coefficient as the ratio of the height of the fourth material layer at the inlet of the memory at the current moment to the first preset height threshold value; k (K) ₃ And taking the third correction coefficient as the ratio of the height of the fourth material layer at the inlet of the memory at the current moment to a second preset height threshold value, wherein the second preset height threshold value is larger than the first preset height threshold value.

Optionally, S1 further includes: detecting whether a shielding object exists in the moving path direction of the buffer capacity adjusting device.

After S2, further comprising:

s3: if the duration that the height of the material layer of the movable end bend of any buffer conveying unit exceeds the first preset height threshold exceeds the preset time length, and/or the duration that the height of the material layer of the fixed end bend of any buffer conveying unit exceeds the first preset height threshold exceeds the preset time length, and/or a shielding object is detected in the moving path direction of the buffer capacity adjusting device, the stop alarm of the first-in first-out buffer conveying device is triggered.

Optionally, S1 further includes: the cache capacity status of the memory is monitored.

S2, further comprising:

when the buffer capacity of the memory is monitored to reach the minimum capacity, sending a shutdown request to downstream material taking equipment of the first-in first-out buffer conveying device; when the buffer capacity of the memory is monitored to be lower than a first preset capacity, the downstream material taking equipment of the first-in first-out buffer conveying device sends a deceleration request; when the buffer capacity of the memory is monitored to be higher than the second preset capacity, a deceleration request is sent to upstream feeding equipment of the first-in first-out buffer conveying device; when the buffer capacity of the memory is monitored to reach the maximum capacity, sending a shutdown request to upstream feeding equipment of the first-in first-out buffer conveying device; wherein the first preset capacity is smaller than the second preset capacity.

The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:

in the scheme, the flexible matching of the production speed between the first-in first-out buffer conveying device and the cigarette making machine and the packaging machine can be realized by the method, and the method for adjusting the height of the conveying material is provided according to the self structural characteristics of the equipment, so that the problem that the rod-shaped material in the storage is in disorder caused by excessive rolling of the rod-shaped material when the rod-shaped material is excessively conveyed by the conveying belt and the conveying steel belt on an ascending and descending slope due to the height difference of the mechanical structure of the conveying belt and the conveying steel belt of the storage in the conveying process is solved; in the process of bending and conveying rod-shaped materials in the storage, the problem of bending and blocking possibly caused by the fact that the bending materials are too high, and the problem of rod disorder caused by the fact that the rolling amplitude of the materials possibly caused by the fact that the bending materials are too low are solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first-in first-out buffer conveying device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a memory structure according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a cross-sectional structure of a memory A-A according to an embodiment of the present invention;

FIG. 4 is a flowchart of a first-in first-out buffer transfer method according to an embodiment of the present invention;

FIG. 5 is a graph of the height control of a material layer versus the speed of a control object according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

1: an upstream conveying device; 2: a memory; 3: downstream conveying means; 4: an electric control system; 11: an upstream sampling delivery channel; 12: an upstream bed height detection sensor; 13: an upstream elevator and an overhead horizontal conveyor tunnel; 21: a buffer transport unit; 22: a buffer capacity adjusting device; 26: a cylinder type conveying steel belt rack; 27: a safety protection door; 31: a downstream sampling delivery channel; 32: a downstream bed height detection sensor; 33: downstream elevator and overhead horizontal conveyor tunnel; 34: a falling port material layer height detection sensor; 211: a fixed end downhill conveying belt; 212: an upper layer conveying steel belt; 213: buffering the uphill conveying belt; 214: a moving end bend; 215: buffering the downhill conveying belt; 216: a lower layer conveying steel belt; 217: a fixed end up-slope conveying belt; 218: setting an end curve; 220: a movable end anti-pinch safety protection sensor; 231: a fixed-end curve material layer height detection sensor; 241: a moving end curve material layer height detection sensor;

h ₁ The first material layer height monitored by the upstream material layer height detection sensor 12; h is a ₂ A second bed height detected by the downstream bed height detection sensor 32; h is a ₃ A third material layer height detected by a falling mouth material layer height detection sensor 34; h ₄ : the preset conveying height of the storage materials is the height of a fourth material layer; h ₅ : a first preset height threshold; h ₆ : a second preset height threshold; vc: upstream feed rate; v (V) ₁ : a first conveying speed; v (V) ₃ : a third conveying speed; v (V) ₄ : a fourth conveying speed; v (V) _p : a downstream take-off speed; x: among n buffer memory transport units in total, each buffer memory transport unit x from top to bottom; v (V) _s [x-1]: synchronous conveying speed of a fixed-end downhill conveying belt and an upper-layer conveying steel belt of the x-th buffer conveying unit; v (V) _s [x]: the synchronous conveying speed of the lower layer conveying steel belt and the fixed end ascending conveying belt of the x buffer conveying unit; v (V) _m [x]: the buffer up-slope conveying belt and the buffer down-slope conveying belt of the x buffer conveying unit synchronously convey speeds; v (V) ₂₂ : and adjusting the speed of the moving end bend to move back and forth when the buffer capacity is adjusted.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

It should be noted that "upper", "lower", "left", "right", "front", "rear", and the like are used in the present invention only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.

As shown in fig. 1, an embodiment of the present invention provides a first-in first-out buffer transport device, which includes an upstream transport device 1, a memory 2, a downstream transport device 3, and an electronic control system 4.

Wherein the outlet of the upstream conveying device 1 is communicated with the inlet of the storage 2; the outlet of the reservoir 2 communicates with the inlet of the downstream conveying means 3.

The electric control system 4 is used for acquiring the specified parameters of the upstream conveying device 1, the memory 2 and the downstream conveying device 3 of the first-in first-out buffer conveying device and controlling the material conveying state of the first-in first-out buffer conveying device according to the acquired specified parameters; wherein, the material conveying state includes: the conveying speed of the upstream conveying device 1 and/or the conveying speed of the downstream conveying device 3 and/or the buffer capacity of the storage 2 and/or the conveying material layer height of the storage 2.

Optionally, the upstream conveyor 1 comprises an upstream sampling conveyor lane 11, an upstream elevator and overhead horizontal conveyor lane 13, and an upstream bed height detection sensor 12.

The inlet of the upstream sampling conveying channel 11 is in butt joint with the upstream feeding equipment of the first-in first-out buffer conveying device, the outlet of the upstream sampling conveying channel 11 is communicated with the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel 13, and the outlet of the upstream lifting machine and the outlet of the overhead horizontal conveying channel 13 are communicated with the inlet of the storage 2.

The upstream material layer height detection sensor 12 is installed at the entrance of the upstream elevator and overhead horizontal conveying channel 13, and is used for detecting the first material layer height at the entrance of the upstream elevator and overhead horizontal conveying channel 13 and sending the first material layer height to the electronic control system 4.

The electronic control system 4 controls the conveying speed of the upstream sampling conveying channel 11 to synchronize the upstream feeding speed according to the upstream feeding speed sent by the upstream feeding equipment of the first-in first-out buffer conveying device; the electronic control system 4 also controls the conveying speed of the upstream lifter and the overhead horizontal conveying channel 13 according to the upstream feeding speed, the first material layer height and the preset fourth material layer height at the inlet of the storage 2.

Optionally, the downstream conveyor 3 includes a downstream sampling conveyor channel 31, a downstream elevator and overhead horizontal conveyor channel 33, a drop gate layer height detection sensor 34, and a downstream layer height detection sensor 32.

Wherein the outlet of the storage 2 is connected to a downstream external connection device through a downstream sampling and conveying channel 31, a downstream lifting machine and an overhead horizontal conveying channel 33 in sequence.

The drop mouth material layer height detection sensor 34 is installed at the outlet of the downstream elevator and the overhead horizontal conveying channel 33, and is used for detecting the third material layer height at the outlet of the downstream elevator and the overhead horizontal conveying channel 33 and sending the third material layer height to the electronic control system 4.

The downstream layer height detection sensor 32 is installed at the entrance of the downstream elevator and overhead horizontal conveying channel 33, and is used for detecting the second layer height at the entrance of the downstream elevator and overhead horizontal conveying channel 33 and sending the second layer height to the electronic control system 4.

The electronic control system 4 also controls the conveying speed of the downstream lifter and the overhead horizontal conveying channel 33 according to the downstream material taking speed sent by the downstream feeding equipment of the first-in first-out buffer conveying device, the height of the second material layer, the height of the third material layer and the preset height of the fourth material layer at the inlet of the storage 2.

Alternatively, as shown in fig. 2, the storage 2 has a cylindrical structure, and includes a cylindrical conveyor belt frame 26, a plurality of buffer conveyor units 21, and a buffer capacity adjusting device 22.

The cartridge conveyor belt rack 26 includes a cartridge holder and a plurality of layers of endless conveyor belts mounted on the cartridge holder; the inner ring and the outer ring of the annular conveying steel belt have height difference, and the conveying directions of the adjacent annular conveying steel belts are opposite.

The buffer conveying units 21 are longitudinally arranged along the periphery of the cylinder type bracket and are connected end to end, and each buffer conveying unit 21 is arranged on two adjacent upper and lower layers of conveying steel belts; wherein the longitudinal direction is a direction parallel to the axial direction of the cylinder bracket.

The buffer capacity adjusting device 22 is connected to the plurality of buffer transport units 21; the electronic control system 4 also controls the buffer capacity adjusting device 22 to adjust the buffer capacity of at least one buffer conveying unit 21 according to the material conveying speed of the inlet and the outlet of the memory 2.

Optionally, each buffer conveying unit 21 includes an upper buffer conveying unit, a lower buffer conveying unit, a moving end bend 214, a fixed end bend 218, a moving end bend material layer height detection sensor 231, and a fixed end bend material layer height detection sensor 231.

Wherein, the material outlet end of the upper layer buffer conveying unit is a suspension end, and the outer side of the suspension end is provided with an arc-shaped movable end bend 214 which protrudes outwards.

The material inlet end of the lower buffer conveying unit is connected with the inner side of the lower end of the movable end bend 214, the material outlet end of the lower buffer conveying unit is a suspension end, and the outer side of the suspension end is provided with an outwards convex arc-shaped fixed end bend 218; the inner side of the lower end of the fixed end bend 218 is connected with the material inlet end of the upper layer buffer conveying unit of the next buffer conveying unit.

The upper buffer conveying unit comprises a fixed-end downhill conveying belt 211, an upper conveying steel belt 212 and a buffer uphill conveying belt 213 which are sequentially arranged along the conveying direction of materials.

In a possible implementation manner, the assembly relationship of the fixed-end downhill conveying belt 211, the upper-layer conveying steel belt 212 and the buffer uphill conveying belt 213 may be that a transition plate is installed in the material outlet direction of the fixed-end downhill conveying belt 211, and the transition plate is lapped on the upper surface of the upper-layer conveying steel belt 212; a transition plate is installed in the material inlet direction of the buffer upward-slope conveying belt 213 and is overlapped with the upper surface of the upper-layer conveying steel belt 212.

The lower buffer conveyor unit includes a buffer downhill conveyor belt 215, a lower conveyor belt 216, and a fixed-end uphill conveyor belt 217, which are sequentially disposed along the material conveying direction.

In a possible implementation manner, the assembly relationship of the buffer downhill conveying belt 215, the lower layer conveying steel belt 216 and the fixed end uphill conveying belt 217 may be that a transition plate is installed in the material outlet direction of the buffer downhill conveying belt 215, and the transition plate is lapped on the upper surface of the lower layer conveying steel belt 216; a transition plate is mounted on the fixed end up-slope conveyor belt 217 in the direction of the material inlet and is lapped on the upper surface of the lower conveyor belt 216.

Further, the inner and outer rings of the upper and lower conveying steel belts 212, 216 are uniformly distributed with multiple groups of bosses, and the inner ring bosses and the outer ring bosses have height differences.

The material conveying direction of the buffer conveying unit 21 is along the paths of a fixed-end downhill conveying belt 211, an upper-layer conveying belt 212, a buffer ascending conveying belt 213, a buffer curve 214, a buffer descending conveying belt 215, a lower-layer conveying belt 216, a fixed-end ascending conveying belt 217 and a fixed-end curve 218.

The moving end curve material layer height detection sensor 241 is disposed at the outer side of the arc of the moving end curve 214, and is configured to detect whether the material layer height of the moving end curve 214 exceeds a first preset height threshold, and send the detection result to the electronic control system 4.

The fixed-end curve material layer height detection sensor 231 is disposed at the outer side of the circular arc of the fixed-end curve 218, and is used for detecting whether the material layer height of the fixed-end curve 218 exceeds a first preset height threshold value, and sending the detection result to the electronic control system 4.

Optionally, the buffer capacity adjusting means 22 comprises a fixed mounting station assembly and a drive assembly.

The fixed mounting station assembly is used for fixing the ascending conveyor belt, the moving end bend 214 and the descending conveyor belt of the buffer conveyor unit 21 on the cylinder type bracket.

The driving assembly is used for driving the ascending conveying belt, the moving end bend 214 and the descending conveying belt of each buffer conveying unit 21 to horizontally move along the circumferential direction of the cylinder type support, so that buffer capacity adjustment of the buffer conveying units 21 is realized by adjusting the distance between the moving end bend 214 and the fixed end bend 218.

Optionally, the buffer capacity adjusting device 22 further includes a first sensor and a second sensor disposed inside the drum-type conveying steel belt rack; the drive assembly carries a position encoder.

The first sensor is arranged at the empty limit position of the buffer capacity adjusting device 22; the empty limit position is the position of the corresponding buffer capacity adjustment device when the buffer capacity of the memory 2 is minimum.

The second sensor is arranged at the full limit position of the buffer capacity adjusting device 22; the full limit position is the position of the corresponding buffer capacity adjustment device when the buffer capacity of the memory 2 is maximum.

The position encoder is used for detecting the real-time position of the buffer capacity adjusting device 22 and sending the real-time position to the electronic control system 4, and the electronic control system 4 is also used for receiving trigger signals of the first sensor and the second sensor.

Optionally, the buffer capacity adjusting device 22 further includes a movable end anti-pinch safety monitoring sensor 220.

As shown in fig. 3, the movable end anti-pinch safety monitoring sensor 220 is installed at the top end of the buffer capacity adjusting device 22, and detects whether a shielding object exists in the moving path direction of the buffer capacity adjusting device 22 from top to bottom, and generates an anti-pinch pulse signal to send to the electronic control system 4 when detecting that a shielding object exists in the moving path direction of the buffer capacity adjusting device 22.

The electronic control system 4 is further configured to trigger the stop alarm of the first-in first-out buffer conveying device when the moving end curve material layer height detection sensor 241 and/or the fixed end curve material layer height detection sensor 231 detects that the material layer height of the moving end curve 214 and/or the material layer height of the fixed end curve 218 exceeds the duration of the first preset height threshold value for more than a preset time period, and/or when the anti-pinch pulse signal is received.

The fifo buffer conveyor further comprises a safety gate 27 arranged at the periphery of the memory 2.

According to the embodiment of the invention, the flexible matching of the production speed between the first-in first-out buffer conveying device and the cigarette making machine and the packaging machine can be realized, and the method for adjusting the height of the conveying material is provided according to the structural characteristics of the equipment, so that the problem that the rod-shaped material is excessively rolled when the rod-shaped material excessively conveys the belt and the conveying steel belt on an ascending and descending slope and the rod-shaped material is disordered in the conveying process due to the height difference of the mechanical structure of the conveying belt and the conveying steel belt of the storage is solved; in the process of bending and conveying rod-shaped materials in the storage, the problem of bending and blocking possibly caused by the fact that the bending materials are too high, and the problem of rod disorder caused by the fact that the rolling amplitude of the materials possibly caused by the fact that the bending materials are too low are solved.

As shown in fig. 4, an embodiment of the present invention provides a method for delivering a first-in first-out buffer, where the process flow of the method may include the following steps:

s1, acquiring specified parameters of an upstream conveying device, a memory and a downstream conveying device of the first-in first-out buffer conveying device.

The first-in first-out buffer memory conveying device comprises a memory, an upstream conveying device connected to an inlet of the memory and a downstream conveying device connected to an outlet of the memory.

In a possible implementation manner, before acquiring the specified parameter, the first-in first-out buffer conveying device is configured, and a specific configuration process may be: and adjusting the displacement reference of the control object. And converting the gear ratio of the servo driver speed reducer of each control object to ensure the unification of the actually output displacement references under the condition that each conveying object has the same time and the same speed.

Specifically, as shown in the parameter relationship of fig. 5, the configuration parameters include parameters obtained by setting the configuration parameters, by calculation, and parameters obtained by sensor detection:

1. the parameters set by the method comprise: correction proportionality coefficient K of material layer height detection sensor ₁ Default value is 1, and adjusting range (0.5-1.5); speed correction coefficient array K of conveying belt for bending in and bending out of curve at fixed end ₄ [1,n]Wherein, the speed correction coefficient K of the constant-end bend in-bend and out-bend conveying belt in the xth buffer conveying unit ₄ [x]Default value is 1, and adjusting range (0.5-1.5); speed correction coefficient array K of conveying belt for each bend in and out of moving end ₅ [1,n]Wherein, the speed correction coefficient K of the conveying belt for buffering the curve in-curve and the curve out-curve in the xth buffering conveying unit ₅ [x]Default value is 1, and adjusting range (0.5-1.5); the upstream conveying device end conveys to a fourth material layer height H at the storage inlet ₄ Default value is 90mm, adjusting range (85 mm-95 mm); the first preset height threshold H for conveying on the downhill conveying belt, the buffer ascending conveying belt, the buffer descending conveying belt and the fixed end ascending conveying belt of all buffer conveying units in the storage ₅ Default value is 70mm, adjusting range (60 mm-85 mm); the upper layer conveying steel belt and the lower layer conveying steel belt of all the buffer conveying units in the storage are conveyed with a second preset height threshold H ₆ Default value is 90mm, adjustment range (85 mm-110 mm).

2. The parameters obtained by calculation include: correction coefficient of conveying material speed on beltCorrection factor for the speed of the material transported on the steel belt>

3. The parameters detected by the sensor include: the first material layer height h monitored by the upstream material layer height detection sensor ₁ The method comprises the steps of carrying out a first treatment on the surface of the The second material layer height h monitored by the downstream material layer height detection sensor ₂ The method comprises the steps of carrying out a first treatment on the surface of the The third material layer height h monitored by the falling opening material layer height detection sensor ₃ 。

S2, controlling the material conveying state of the first-in first-out buffer conveying device according to the specified parameters.

Wherein, the material conveying state includes: the conveying speed of the upstream conveying device and/or the conveying speed of the downstream conveying device and/or the buffer capacity of the storage device and/or the conveying material layer height of the storage device.

Optionally, S1 includes:

collecting a first material layer height h at an inlet of an upstream conveying device in real time ₁ And an upstream feed velocity Vc.

Wherein the first material layer height h ₁ And conveying the actual material layer height of the material to an upstream sampling conveying channel monitored by an upstream material layer height detection sensor, wherein the upstream feeding speed Vc is the current production speed of the cigarette making machine.

S2, including:

according to the upstream feeding speed Vc and the first layer height h ₁ Preset fourth layer height H at memory inlet ₄ Controlling a first conveying speed V of the upstream conveying device at the current moment when the upstream feeding speed is matched ₁ 。

In a possible embodiment, the first conveying speed V ₁ The conveyor channel is conveyed at the speed of the upstream elevator and at the same time at the speed of the accumulator inlet. Detecting the actual height h of the conveyed material of the upstream sampling conveying channel through a material layer height detection sensor ₁ For correcting the feeding speed V of the upstream cigarette making machine _c Thereby obtaining a first conveying speed V ₁ ＝f(K ₁ ,h ₁ ,H ₄ ,V _c ) The calculation formula preferably used is shown in the following formula (1):

optionally, S1 includes:

collecting the second material layer height h at the inlet of the downstream conveying device in real time ₂ Third layer height h at the outlet of the downstream conveying device ₃ And downstream take-off velocity V _p 。

Wherein the third material layer height h ₃ The actual height of the material is conveyed to a downstream packing machine monitored by a falling opening material layer height detection sensor, and the downstream material taking speed V _p For the current production speed of the downstream packaging machine.

S2, including:

according to the third layer height h ₃ Downstream take off velocity V _p Preset fourth layer height H at memory inlet ₄ Controlling a fourth conveying speed V of the downstream conveying device at the current moment when the downstream material taking speed is matched ₄ 。

According to the second layer height h ₂ Fourth layer height H ₄ And a fourth conveying speed V ₄ Controlling a third conveying speed V of an inlet of the downstream conveying device at the current moment ₃ 。

In a possible embodiment, the downstream sampling transport path is said to have a third transport speed V ₃ Is the transport speed of the reservoir outlet, obtained by the following two steps:

firstly, detecting the actual height h of a material conveyed by a downstream packing machine through a falling port material layer height detection sensor ₃ For correcting the take-out speed V of downstream packing machines _p Thereby obtaining a fourth conveying speed V of the downstream elevator and the overhead horizontal conveying passage ₄ ＝f(K ₁ ,h ₃ ,H ₄ ,V _p ) The calculation formula preferably used is shown in the following formula (2):

then, the actual height h of the material conveyed by the downstream sampling conveying channel is detected by a downstream material layer height detection sensor ₂ With simultaneous reference to the fourth conveying speed V of the downstream hoist and the overhead horizontal conveying path ₄ Adjusting and correcting the third conveying speed V of the downstream sampling conveying channel ₃ ＝f(K ₁ ,h ₂ ,H ₄ ,V ₄ ) The calculation formula preferably used is shown in the following formula (3):

wherein K is ₁ And correcting a proportional coefficient for the material layer height detection sensor, wherein the default value is 1, and the adjustment range is 0.5-1.5.

Optionally, the method is used for a first-in first-out buffer conveying device, step S1, and further includes:

S2, the method further comprises the following steps A20-A40:

step A20: according to the formulaCalculating the speed V of horizontal movement along the circumference of the cylinder bracket required by the curve of the moving end at the current moment ₂₂ The method comprises the steps of carrying out a first treatment on the surface of the Where n is the total number of buffer transport units in the memory.

Step A40: if the current moment V ₂₂ If the speed is smaller than 0, controlling the curve of the moving end to be at a speed V along the circumference of the cylinder type bracket ₂₂ Move horizontally in the direction of decreasing the buffer capacity of the buffer transport unit, and then return to step A20 until any time V ₂₂ Stopping when equal to 0 or stopping when the buffer capacity of the memory reaches the minimum capacityStopping; if the current moment V ₂₂ If the speed is greater than 0, controlling the curve of the moving end to be at a speed V along the circumference of the cylinder type bracket ₂₂ Move horizontally in a direction to increase the buffer capacity of the buffer transport unit, and then return to execute step A20 until any time V ₂₂ Stopping when the buffer capacity of the memory is equal to 0 or stopping when the buffer capacity of the memory reaches the maximum capacity.

In a possible implementation manner, the method for controlling the cache capacity of the memory includes: when V is ₂₂ >When 0, the driving component of the buffer capacity adjusting device drives the fixed installation station component to expand along the circumferential direction of the storage, and drives the moving end bend, the ascending conveying belt and the descending conveying belt to move in the circumferential direction of the cylinder type bracket, so that the buffer capacity of the storage is in a feeding state; when V is ₂₂ When the buffer capacity adjusting device is in a static state, the buffer capacity of the memory is in a balanced state; when V is ₂₂ <And 0, the driving component of the buffer capacity adjusting device drives the fixed installation station component to shrink along the circumferential direction of the storage, and the buffer capacity of the storage is in a discharging state. Thereby realizing a first conveying speed V according to the upstream conveying device ₁ And a third conveying speed V of the inlet of the downstream conveying device ₃ The purpose of dynamic adjustment of storage capacity.

Optionally, S1 further includes:

S2, further comprising:

Preferably, in this embodiment, the first multiple K ₅ [x]Take value between [0.5, 1); second multiple K ₅ [x]In (1, 1.5)]The value is taken in between; third multiple K ₄ [x]Take value between [0.5, 1); fourth multiple K ₄ [x]In (1, 1.5)]And takes a value.

In a possible implementation manner, the method for controlling the material height of the storage device can be divided into curve material height control and material height control of a conveying belt and a conveying steel belt according to the data transmission sequence, and the specific steps are as follows:

1. the curve material height control comprises the realization of curve material height control.

(1) Curve material height control, K needs to be called ₄ [1,n]、K ₅ [1,n]Parameters respectively to buffer memory conveying unitsThe speed of the conveyor belt is corrected, wherein the correction speed relation of each control object of the x buffer conveying unit in the total n buffer conveying units is as follows:

the speed of the fixed-end downhill conveying belt and the speed of the upper conveying steel belt are in synchronous relation, and after the curve material is subjected to height correction, the speed is shown in the following formula (4):

the speed of the lower layer conveying steel belt and the speed of the fixed end ascending conveying belt are in synchronous relation, and after the curve material is subjected to height correction, the speed is shown in the following formula (5):

The speed of the buffer ascending conveying belt and the buffer descending conveying belt are synchronous, and the speed of the buffer ascending conveying belt and the buffer descending conveying belt after the buffer ascending conveying belt and the buffer descending conveying belt are subjected to curve material height correction is shown in the following formula (6):

(2) The curve material height control is realized by detecting the change of the curve material height at the fixed end through a curve material layer height detection sensor at the fixed end to adjust K ₄ [x]The height of the curve material is adjusted, and the specific adjusting conditions are as follows: when the fixed end curve material layer height detection sensor detects that the fixed end curve material height is greater than a first preset height threshold H ₅ At the time, K ₄ [x]Enlarging; when the layer height of the fixed-end curve material is detected by the fixed-end curve material layer height detection sensor to be equal to H ₅ At the time, K ₄ [x]Setting the value as a fixed value; when the layer height of the fixed-end curve material is detected by the fixed-end curve material layer height detection sensor to be smaller than H ₅ At the time, K ₄ [x]The addition is reduced; the buffer curve is entered by a material layer height detection sensor of a curve at the movable end in the xth buffer conveying unit in the same wayCorrection coefficient K for speed of curved and out-curved conveying belt ₅ [x]And (5) adjusting.

Correcting the conveying speed of the fixed-end downhill conveying belt of the xth buffer conveying unit to K ₂ ×V _s [x-1]Correcting the conveying speed of the fixed-end ascending conveying belt of the xth buffer conveying unit to K ₂ ×V _s [x]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit to K ₂ ×V _m [x]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the upper layer conveying steel belt of the xth buffer conveying unit to K ₃ ×V _s [x-1]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the lower conveying steel belt of the xth buffer conveying unit to K ₃ ×V _s [x]。

Wherein V is _s [x-1]The conveying speeds of the fixed-end downhill conveying belt and the upper-layer conveying steel belt of the xth buffer conveying unit determined in the step B11, V _s [x]For the conveying speeds of the lower layer conveying steel belt and the fixed end ascending conveying belt of the xth buffer conveying unit determined in the step B11, V _m [x]B11, conveying speeds of a buffer ascending conveying belt and a buffer descending conveying belt of the x buffer conveying unit are determined; k (K) ₂ Taking the value of the second correction coefficient as the ratio of the height of the fourth material layer at the inlet of the memory at the current moment to the first preset height threshold value; k (K) ₃ And taking the third correction coefficient as the ratio of the height of the fourth material layer at the inlet of the memory at the current moment to a second preset height threshold value, wherein the second preset height threshold value is larger than the first preset height threshold value.

After S2, further comprising:

In a feasible implementation mode, states of a fixed-end curve material layer height detection sensor and a movable-end curve material layer height detection sensor of each buffer conveying unit are monitored in real time, so that the sensor can monitor conveying speed correction of a curve or trigger stop alarm of the first-in first-out buffer conveying device.

When the height of the material layer conveyed by the fixed-end curve is too high, the material layer height detection sensor 231 of the fixed-end curve detects the material, and the material layer is too high, so that the speed of the curve in-curve and out-curve conveyor is accelerated.

When a material layer conveyed by a fixed-end bend blocks the bend, if a signal is given by a fixed-end bend material layer height detection sensor after a plurality of seconds, the blocking stop alarm is triggered, and the first-in first-out buffer device is stopped.

The function of the sensor for detecting the material layer height of the curve at the moving end is the same.

S2, further comprising:

In a possible implementation manner, the first-in first-out buffer conveying method further comprises the step of receiving and transmitting signals to the linkage equipment.

Wherein, send and receive signal content to the upstream interlocking equipment includes: and receiving and acquiring the feeding speed Vc of the upstream cigarette making machine, and sending a deceleration request or a shutdown request to upstream interlocking equipment. Wherein, when a deceleration request for an upstream interlocking device is received, the upstream interlocking device reduces the production speed; when a shutdown request of the upstream interlocking equipment is received or a shutdown alarm of the first-in first-out buffer conveying device is triggered, the production of the upstream interlocking equipment is stopped.

Receiving and transmitting signal content to downstream interlocking devices includes: receiving and acquiring the material taking speed V of a downstream packing machine _p A request for deceleration or a request for shutdown is sent to downstream interlocking equipment. Wherein, when a deceleration request for the downstream interlocking device is received, the downstream interlocking device reduces the production speed; when a shutdown request of the downstream interlocking equipment is received or a shutdown alarm of the first-in first-out buffer conveying device is triggered, the downstream interlocking equipment stops production.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. The first-in first-out buffer conveying device is characterized by comprising an upstream conveying device, a memory, a downstream conveying device and an electric control system;

wherein the outlet of the upstream conveying device is communicated with the inlet of the storage; the outlet of the storage is communicated with the inlet of the downstream conveying device;

the electronic control system is used for acquiring specified parameters of an upstream conveying device, a memory and a downstream conveying device of the first-in first-out buffer conveying device and controlling the material conveying state of the first-in first-out buffer conveying device according to the acquired specified parameters; wherein, the material conveying state includes: the conveying speed of the upstream conveying device and/or the conveying speed of the downstream conveying device and/or the buffer capacity control of the storage and/or the conveying material layer height of the storage;

the storage is of a cylindrical structure and comprises a cylindrical conveying steel belt rack and a plurality of buffer conveying units;

The cylinder type conveying steel belt rack comprises a cylinder type bracket;

the plurality of buffer conveying units are longitudinally arranged along the periphery of the cylinder type bracket and are connected end to end;

each buffer conveying unit comprises an upper buffer conveying unit, a lower buffer conveying unit, a movable end bend and a fixed end bend;

the electronic control system is specifically configured to acquire, in real time, a first conveying speed V of the upstream conveying device at a current moment ₁ And a third conveying speed V of the inlet of the downstream conveying device ₃ And acquiring the buffer capacity state of the memory in real time, and executing the steps A20 to A40 to control the material conveying state of the first-in first-out buffer conveying device according to the acquired specified parameters:

step A20: according to the formulaCalculating the speed V of the horizontal movement of the moving end bend along the circumference of the cylinder bracket at the current moment ₂₂ The method comprises the steps of carrying out a first treatment on the surface of the Wherein n is the total number of buffer memory conveying units in the memory;

step A30: comparing the speed V of the horizontal movement of the moving end bend along the circumference of the cylinder bracket at the current moment ₂₂ And a size of 0;

step A40: if the current moment V ₂₂ If the speed is smaller than 0, controlling the moving end bend to rotate along the circumference of the cylinder type bracket at the speed V ₂₂ Moving horizontally in a direction of reducing the buffer capacity of the buffer transport unit, and then returning to step A20 until any time V ₂₂ Stopping when the buffer capacity of the memory is equal to 0 or stopping when the buffer capacity of the memory reaches the minimum capacity; if the current moment V ₂₂ If the speed is greater than 0, controlling the moving end bend to rotate along the circumference of the cylinder type bracket at the speed V ₂₂ Move horizontally in a direction to increase the buffer capacity of the buffer transport unit, and then return to execute step A20 until any time V ₂₂ Stopping when the buffer capacity of the memory is equal to 0 or stopping when the buffer capacity of the memory reaches the maximum capacity.

2. The apparatus of claim 1, wherein the upstream conveyor comprises an upstream sampling conveyor lane, an upstream elevator and overhead horizontal conveyor lane, and an upstream bed height detection sensor;

the inlet of the upstream sampling conveying channel is in butt joint with upstream feeding equipment of the first-in first-out buffer conveying device, the outlet of the upstream sampling conveying channel is communicated with the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel, and the outlet of the upstream lifting machine and the outlet of the overhead horizontal conveying channel are communicated with the inlet of the storage;

the upstream material layer height detection sensor is arranged at the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel and is used for detecting the first material layer height at the inlet of the upstream lifting machine and the inlet of the overhead horizontal conveying channel and sending the first material layer height to the electric control system;

The electronic control system controls the conveying speed of the upstream sampling conveying channel to synchronize the upstream feeding speed according to the upstream feeding speed sent by the upstream feeding equipment of the first-in first-out buffer conveying device; and the electric control system also controls the conveying speeds of the upstream lifter and the overhead horizontal conveying channel according to the upstream feeding speed, the first material layer height and the preset fourth material layer height at the inlet of the storage.

3. The apparatus of claim 1, wherein the downstream conveyor comprises a downstream sampling conveyor channel, a downstream elevator and overhead horizontal conveyor channel, a drop mouth bed height detection sensor, and a downstream bed height detection sensor;

the outlet of the storage is connected to downstream external connection equipment through the downstream sampling and conveying channel, the downstream lifting machine and the overhead horizontal conveying channel in sequence;

the falling mouth material layer height detection sensor is arranged at the outlet of the downstream elevator and the overhead horizontal conveying channel and is used for detecting the height of a third material layer at the outlet of the downstream elevator and the overhead horizontal conveying channel and sending the third material layer to the electric control system;

The downstream material layer height detection sensor is arranged at the inlet of the downstream lifting machine and the inlet of the overhead horizontal conveying channel and is used for detecting the height of a second material layer at the inlet of the downstream lifting machine and the inlet of the overhead horizontal conveying channel and sending the second material layer to the electric control system;

the electric control system also controls the conveying speed of the downstream lifter and the overhead horizontal conveying channel according to the downstream material taking speed sent by the downstream material supply equipment of the first-in first-out buffer conveying device, the height of the second material layer, the height of the third material layer and the height of a preset fourth material layer at the inlet of the storage.

4. The apparatus of claim 1, wherein the memory further comprises a cache capacity adjustment means;

the cylinder type conveying steel belt rack further comprises a plurality of layers of annular conveying steel belts arranged on the cylinder type bracket; the inner ring and the outer ring of the annular conveying steel belt have height difference, and the conveying directions of the adjacent annular conveying steel belts are opposite;

each buffer conveying unit is arranged on two adjacent upper and lower layers of conveying steel belts; wherein the longitudinal direction is a direction parallel to the axial direction of the cylinder bracket;

the buffer capacity adjusting device is connected with the plurality of buffer conveying units; and the electric control system also controls the buffer capacity adjusting device to adjust the buffer capacity of at least one buffer conveying unit according to the material conveying speeds of the inlet and the outlet of the memory.

5. The apparatus of claim 4, wherein each buffer conveyor unit further comprises a moving end curve material layer height detection sensor and a fixed end curve material layer height detection sensor;

the material outlet end of the upper layer buffer conveying unit is a suspension end, and an outwards convex arc-shaped movable end bend is arranged on the outer side of the suspension end;

the material inlet end of the lower buffer conveying unit is connected with the inner side of the lower end of the movable end bend, the material outlet end of the lower buffer conveying unit is a suspension end, and the outer side of the suspension end is provided with an outwards convex arc-shaped fixed end bend; the inner side of the lower end of the fixed-end bend is connected with the material inlet end of the upper layer buffer conveying unit of the next buffer conveying unit;

the upper buffer conveying unit comprises a fixed-end downhill conveying belt, an upper conveying steel belt and a buffer uphill conveying belt which are sequentially arranged along the conveying direction of materials;

the lower buffer conveying unit comprises a buffer downhill conveying belt, a lower conveying steel belt and a fixed-end uphill conveying belt which are sequentially arranged along the conveying direction of the materials;

the movable end curve material layer height detection sensor is arranged on the outer side of the circular arc of the movable end curve and is used for detecting whether the material layer height of the movable end curve exceeds a first preset height threshold value or not and sending a detection result to the electric control system;

The fixed-end curve material layer height detection sensor is arranged on the outer side of the circular arc of the fixed-end curve and is used for detecting whether the material layer height of the fixed-end curve exceeds a first preset height threshold value or not and sending a detection result to the electric control system.

6. The apparatus of claim 5, wherein the buffer capacity adjustment means comprises a fixed mounting station assembly and a drive assembly;

the fixed mounting station assembly is used for fixing an ascending conveying belt, a moving end bend and a descending conveying belt of the buffer conveying unit on the cylinder type bracket;

7. The device according to claim 6, wherein the buffer capacity adjusting device further comprises a first sensor and a second sensor arranged inside the barrel-type conveying steel belt rack; the drive assembly has a position encoder;

the first sensor is arranged at the empty limit position of the buffer capacity adjusting device; the empty limit position is the position of the corresponding buffer capacity adjusting device when the buffer capacity of the memory is minimum;

The second sensor is arranged at the full limit position of the buffer capacity adjusting device; the full limit position is the position of the buffer capacity adjusting device corresponding to the maximum buffer capacity of the memory;

8. The apparatus of claim 5, wherein the buffer capacity adjustment apparatus further comprises a live anti-pinch safety monitoring sensor;

the movable end anti-pinch safety monitoring sensor is arranged at the top end of the buffer capacity adjusting device, detects whether a shielding object exists in the moving path direction of the buffer capacity adjusting device from top to bottom, and generates an anti-pinch pulse signal to be sent to the electric control system when detecting that the shielding object exists in the moving path direction of the buffer capacity adjusting device;

9. A method for fifo buffer delivery, the method comprising:

s1, acquiring specified parameters of an upstream conveying device, a memory and a downstream conveying device of a first-in first-out buffer conveying device; the first-in first-out buffer memory conveying device comprises a memory, an upstream conveying device connected with an inlet of the memory and a downstream conveying device connected with an outlet of the memory;

s2, controlling the material conveying state of the first-in first-out buffer conveying device according to the specified parameters; wherein, the material conveying state includes: the conveying speed of the upstream conveying device and/or the conveying speed of the downstream conveying device and/or the buffer capacity control of the storage and/or the conveying material layer height of the storage;

the cylinder type conveying steel belt rack comprises a cylinder type bracket;

The S1 further includes:

acquiring a first conveying speed V of the upstream conveying device at the current moment in real time ₁ And a third conveying speed V of the inlet of the downstream conveying device ₃ Acquiring the cache capacity state of the memory in real time;

the S2 further includes:

10. The method according to claim 9, wherein S1 comprises:

collecting the height of a first material layer at the inlet of the upstream conveying device and the upstream feeding speed in real time;

the step S2 comprises the following steps:

11. The method according to claim 9, wherein S1 comprises:

collecting the height of a second material layer at the inlet of the downstream conveying device, the height of a third material layer at the outlet of the downstream conveying device and the downstream material taking speed in real time;

the step S2 comprises the following steps:

controlling a fourth conveying speed of the downstream conveying device when the downstream material taking speed is matched at the current moment according to the third material layer height, the downstream material taking speed and the preset fourth material layer height at the inlet of the memory;

and controlling a third conveying speed of an inlet of the downstream conveying device at the current moment according to the second material layer height, the fourth material layer height and the fourth conveying speed.

12. The method of claim 9, wherein S1 further comprises:

acquiring a detection result of whether the height of a material layer of a movable end curve of each buffer conveying unit exceeds a first preset height threshold at the current moment and a detection result of whether the height of the material layer of a fixed end curve exceeds a second preset height threshold;

the S2 further includes:

step B10: controlling the synchronous relation of the conveying speeds of different conveying positions of the xth buffer conveying unit according to the first conveying speed, the third conveying speed and the total number of buffer conveying units in the memory at the current moment; the synchronous relation between different conveying positions of the xth buffer conveying unit comprises: the conveying speeds of the fixed-end downhill conveying belt and the upper-layer conveying belt of the xth buffer conveying unit are synchronous, the conveying speeds of the lower-layer conveying belt and the fixed-end uphill conveying belt of the xth buffer conveying unit are synchronous, and the conveying speeds of the buffer uphill conveying belt and the buffer downhill conveying belt of the xth buffer conveying unit are synchronous; x=1, 2, …, n;

13. The method according to claim 12, wherein after step B10, the S2 further comprises: correcting the conveying speeds of different conveying positions of the xth buffer conveying unit;

the correcting the conveying speed of different conveying positions of the xth buffer conveying unit comprises the following steps:

correcting the conveying speed of the fixed-end downhill conveying belt of the xth buffer conveying unit to K ₂ ×V _s [x-1]Correcting the conveying speed of the fixed-end ascending conveying belt of the xth buffer conveying unit to K ₂ ×V _s [x]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit to K ₂ ×V _m [x]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveying speed of the upper layer conveying steel belt of the xth buffer conveying unit to K ₃ ×V _s [x-1]The method comprises the steps of carrying out a first treatment on the surface of the Correcting the conveyance of the lower conveying steel belt of the xth buffer conveying unitSpeed of K ₃ ×V _s [x]；

Wherein V is _s [x-1]The conveying speeds of the fixed-end downhill conveying belt and the upper-layer conveying steel belt of the xth buffer conveying unit determined in the step B11, V _s [x]For the conveying speeds of the lower layer conveying steel belt and the fixed end ascending conveying belt of the xth buffer conveying unit determined in the step B11, V _m [x]B11, conveying speeds of a buffer ascending conveying belt and a buffer descending conveying belt of the x buffer conveying unit are determined; k (K) ₂ Taking the second correction coefficient as the ratio of the height of the fourth material layer at the inlet of the memory at the current moment to the first preset height threshold value; k (K) ₃ And taking the third correction coefficient as the ratio of the height of the fourth material layer at the inlet of the memory at the current moment to a second preset height threshold value, wherein the second preset height threshold value is larger than the first preset height threshold value.

14. The method of claim 12, wherein S1 further comprises: detecting whether a shielding object exists in the moving path direction of the buffer capacity adjusting device;

after S2, the method further includes:

15. The method according to any one of claims 9-14, wherein S1 further comprises: monitoring the cache capacity state of the memory;

The S2 further includes:

when the buffer capacity of the memory is monitored to reach the minimum capacity, sending a shutdown request to downstream material taking equipment of the first-in first-out buffer conveying device; when the buffer capacity of the memory is monitored to be lower than a first preset capacity, the downstream material taking equipment of the first-in first-out buffer conveying device sends a deceleration request; when the buffer capacity of the memory is monitored to be higher than a second preset capacity, a deceleration request is sent to upstream feeding equipment of the first-in first-out buffer conveying device; when the buffer capacity of the memory is monitored to reach the maximum capacity, sending a shutdown request to upstream feeding equipment of the first-in first-out buffer conveying device; wherein the first preset capacity is smaller than the second preset capacity.