CN114955497A

CN114955497A - First-in first-out cache conveying method and device

Info

Publication number: CN114955497A
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: 2022-08-30
Anticipated expiration: 2042-06-29
Also published as: CN114955497B

Abstract

The invention discloses a first-in first-out cache conveying method and device, and relates to the technical field of tobacco machinery. The method comprises the following steps: the device comprises an upstream conveying device, a storage device, 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 provided method for adjusting the height of the conveyed material solves the problem that the rodlike material rolls excessively and the rod is disordered when the rodlike material in the storage device is conveyed due to the height difference between the conveying belt of the storage device and the mechanical structure of the conveying steel belt; in the process of conveying rod-shaped materials in the storage device through bending, the problem of material blockage of the bending channel caused by too high material of the bending channel and the problem of rod disorder caused by too large rolling amplitude of the material caused by too low material of the bending channel are solved.

Description

First-in first-out cache conveying method and device

Technical Field

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

Background

Generally, on an automatic production line, when one of upstream and downstream equipment fails, in order to ensure the normal operation of the other equipment, one or more buffer conveying devices are mostly arranged between the upstream and downstream equipment to balance the material release of the upstream equipment or the material supply of the downstream equipment, so that the production equipment 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 equipment failure are solved.

The existing buffer conveying device has two conveying processes: one is a first-in last-out mode, and the other is a first-in first-out mode. The first-in and last-out buffer delivery mode refers to: on the upstream and downstream equipment conveying main line, a branch line with a cache conveying function is shunted for absorbing or releasing the materials generated by the difference of the production speeds of the upstream and downstream equipment, the branch line is characterized in that the outlet and the inlet of the branch line share one path, the functional principle is similar to stacking, and the process characteristic is that the materials cached firstly are released finally; the first-in first-out storage delivery mode refers to: the device realizes the buffering of materials by changing the length of the conveying path, has a functional principle similar to a queue form, and has the process characteristic of ensuring the material conveying timeliness.

The buffer conveying device between the cigarette production lines in the tobacco industry at present 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, the redundant materials conveyed to the packaging machine by the cigarette making machine are retained in the buffer conveying device; when the production speed of the packaging machine is higher than that of the cigarette making machine, the balance of the materials conveyed to the packaging machine by the cigarette making machine is supplemented by the buffer conveying device. As can be seen from the process flow of the first-in last-out mode, when the production speed of the packaging machine is higher than that of the cigarette making machine, the materials used by the packaging machine are respectively sourced from the materials produced by the current cigarette making machine and supplemented by the buffer conveying device, and belong to mixed materials with different timeliness, and due to source timeliness, the materials may have the conditions that operators are different and sampling inspection batches are inconsistent, so that once the quality problem occurs, the conditions lead to the occurrence of once the quality problem, the mixed materials are not classified into production batches, the mixed materials cannot be tracked, and a quality-responsible person cannot trace the materials.

The first-in first-out cache mode ensures the material aging because no detention exists in the process of conveying materials, and gradually becomes the preferred choice of a cigarette production line in the tobacco industry, the market demands for first-in first-out equipment are more urgent, and a plurality of equipment manufacturers are urged to explore the design and implementation methods of a first-in first-out device, wherein the application number is '201811476099.7', and the name of a 'cache conveying device with adjustable storage volume and first-in first-out' is the representative of the first-in first-out equipment, but the patent only provides a mechanical structure for implementing the first-in first-out cache, but in practical application, rod-shaped materials in a memory are conveyed in the process, and the rod-shaped materials are excessively rolled when the rod-shaped materials are excessively conveyed on an upper slope and a lower slope and the conveying steel belt is excessively conveyed, so that the rod-shaped materials are disordered; in the process of conveying rod-shaped materials in the storage device through bending, when the materials in the bending are too high, the materials in the bending can be blocked, and when the materials in the bending are too low, the materials can roll to a large extent, so that rod disorder can be caused. Aiming at the problems, how to control an execution object in a memory, how to effectively connect upstream and downstream equipment, how to adjust the height of a bar bending material layer and how to ensure the personal safety of the equipment are problems to be solved.

Disclosure of Invention

The invention aims at the problem that rod-shaped materials in a storage device are disordered when the rod-shaped materials are excessively conveyed on an up slope and a down slope due to the height difference between the mechanical structures of a conveying belt and a conveying steel belt of the storage device in the conveying process of the rod-shaped materials; during the process of over-bending conveying of rod-shaped materials in the storage, the problem of blockage of the bend caused by over-high materials in the bend is possible, and the problem of rod disorder caused by over-large rolling range of the materials caused by over-low materials in the bend is possible. The invention provides a method for controlling an execution object in a memory, effectively linking upstream and downstream equipment, solving the problems of height adjustment of a bar bending material layer and ensuring personal safety of the equipment.

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

in one aspect, the present invention provides a fifo buffer conveyance device including an upstream conveyance device, a memory, a downstream conveyance device, and an electronic control system.

Wherein the outlet of the upstream conveying device is communicated with the inlet of the storage; the outlet of the reservoir is in communication 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 transport 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 passage, an upstream lifter, an overhead horizontal conveying passage and an upstream material layer height detection sensor.

The inlet of the upstream sampling conveying channel 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 is communicated with the upstream hoister and the inlet of the overhead horizontal conveying channel, and the outlets of the upstream hoister and the overhead horizontal conveying channel are communicated with the inlet of the storage.

The upstream material layer height detection sensor is arranged at the inlets of the upstream hoister and the overhead horizontal conveying channel, and is used for detecting the first material layer height at the inlets of the upstream hoister and the overhead horizontal conveying channel and sending the first material layer height to the electric control system.

The electric 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 speeds of the upstream hoister and the overhead horizontal conveying channel according to the upstream feeding speed, the first material bed height and a preset fourth material bed height at the inlet of the storage.

Optionally, the downstream conveying device comprises a downstream sampling conveying channel, a downstream elevator and overhead horizontal conveying channel, a falling port material layer height detection sensor and a downstream material layer height detection sensor.

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

And the falling material layer height detection sensor is arranged at the outlets of the downstream hoister and the overhead horizontal conveying channel and is used for detecting the height of a third material layer at the outlets of the downstream hoister and the overhead horizontal conveying channel and sending the third material layer to the electric control system.

And the downstream material layer height detection sensor is arranged at the inlets of the downstream hoister and the overhead horizontal conveying channel, and is used for detecting the second material layer height at the inlets of the downstream hoister and the overhead horizontal conveying channel and sending the second material layer height to the electric control system.

The electric control system also controls the conveying speeds of the downstream hoister 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 second material layer height, the third material layer height and the preset fourth material layer height at the inlet of the storage.

Optionally, the storage is of a cylindrical structure and comprises a cylindrical 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 support and a plurality of layers of annular conveying steel belts arranged on the cylinder type support; 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 plurality of buffer conveying units are longitudinally arranged along the periphery of the cylindrical support and are connected end to end, and each buffer conveying unit is arranged on the upper layer of conveying steel belt and the lower layer of conveying steel belt which are adjacent; wherein the longitudinal direction is a direction parallel to the axial direction of the cylindrical stent.

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

Optionally, each buffer conveying unit comprises an upper buffer conveying unit, a lower buffer conveying unit, a moving end curve, a fixed end curve, 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 cache conveying unit is a suspension end, and the outer side of the suspension end is provided with an outward convex arc-shaped moving end bend.

The material inlet end of the lower-layer cache conveying unit is connected with the inner side of the lower end of the movable-end curve, the material outlet end of the lower-layer cache conveying unit is a suspended end, and the outer side of the suspended end is provided with an outward convex arc-shaped fixed-end curve; 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-layer buffer conveying unit comprises a fixed-end downhill conveying belt, an upper-layer conveying steel belt and a buffer uphill conveying belt which are sequentially arranged in the material conveying direction.

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 material conveying direction.

The moving end curve material layer height detection sensor is arranged on the outer side of the arc of the moving end curve and used for detecting whether the material layer height of the moving 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 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 an ascending conveying belt, a moving end bend and a descending conveying belt of the buffer conveying unit on the cylinder type support.

The driving assembly is used for driving the ascending slope conveying belt, the moving end bend and the descending slope conveying belt of each buffer conveying unit to horizontally move along the circumferential direction of the cylindrical support, so that the buffer capacity of the buffer conveying units can be adjusted 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 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 cache capacity adjusting device; the empty limit position is a position of the buffer capacity adjusting device corresponding to the minimum buffer capacity of the memory.

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 moving-end anti-pinch safety monitoring sensor.

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

And the electric control system is also used for triggering the first-in first-out buffer conveying device to stop and alarm when the material layer height detection sensor of the movable end curve and/or the material layer height detection sensor of the fixed end curve detect that the material layer height of the movable end curve and/or the material layer height of the fixed end curve exceed a first preset height threshold value for a duration exceeding a preset time length and/or when an anti-pinch pulse signal is received.

In another aspect, the present invention provides a fifo buffer transfer method implemented by a fifo buffer transfer device, the method comprising:

s1, acquiring the designated 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 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 designated parameters; wherein, the material transport 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, comprising:

and acquiring the first material bed height and the upstream feeding speed at the inlet of the upstream conveying device in real time.

S2 includes:

and controlling the first conveying speed of the upstream conveying device at the current moment when the upstream feeding speed is matched 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, comprising:

and acquiring the second material bed height at the inlet of the downstream conveying device, the third material bed height 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 conveying device is matched with the downstream material taking speed 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 fifo buffer transfer device for use in claim 5, S1, further comprising:

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 formula

Calculating the speed V of the horizontal movement along the circumference of the cylinder type support required by the curve at the moving end at the current moment ₂₂ (ii) a Where n is the total number of buffered delivery units in memory.

Step A30: comparing the speed V of the horizontal movement along the circumference of the cylinder type support required by the curve at the moving end at the current moment ₂₂ And 0.

Step A40: if the current moment V ₂₂ If the speed is less than 0, the moving end curve is controlled to be at the speed V along the circumference of the drum type support ₂₂ Horizontally moving towards the direction of reducing the buffer capacity of the buffer conveying unit, and then returning to execute the step A10 until any time V ₂₂ Stopping when the buffer capacity of the memory reaches the minimum capacity or stopping when the buffer capacity of the memory reaches the minimum capacity; if the current moment V ₂₂ If the speed is more than 0, the moving end curve is controlled to rotate at a speed V along the circumference of the drum type support ₂₂ Horizontally moving to the direction of increasing the buffer capacity of the buffer conveying unit, and then returning to execute the step A10 until any time V ₂₂ Equal to 0 or when the buffer capacity of the memory reaches the maximum capacity.

Optionally, S1, further includes:

and obtaining a detection result whether the material bed height of the movable end curve of each cache conveying unit exceeds a first preset height threshold value at the current moment and a detection result whether the material bed height of the fixed end curve exceeds a second preset height threshold value.

S2, further comprising:

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

Step B20: if the material bed height of the moving end curve of the xth cache conveying unit at the current moment exceeds a first preset height threshold, controlling the conveying speed of the cache ascending conveying belt and the cache descending conveying belt of the xth cache conveying unit to synchronously expand a first multiple, or if the material bed height of the moving end curve of the xth cache conveying unit at the current moment does not exceed the first preset height threshold, controlling the conveying speed of the cache ascending conveying belt and the cache descending conveying belt of the xth cache conveying unit to synchronously reduce a second multiple; and/or if the material bed height of the fixed-end curve of the xth cache conveying unit at the current moment exceeds a first preset height threshold, controlling the conveying speed of the lower-layer conveying steel belt of the xth cache conveying unit and the fixed-end uphill conveying belt to synchronously enlarge a third multiple, or if the material bed height of the fixed-end curve of the xth cache conveying unit at the current moment does not exceed the first preset height threshold, controlling the conveying speed of the lower-layer conveying steel belt of the xth cache conveying unit and the fixed-end uphill conveying belt to synchronously reduce 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: and correcting the conveying speed of the different conveying positions of the x-th buffer conveying unit.

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

correcting the conveying speed of a fixed end downhill conveying belt of the xth buffer conveying unit to be K ₂ ×V _s [x-1]Correcting the conveying speed of the fixed end ascending slope conveying belt of the xth buffer conveying unit to be K ₂ ×V _s [x](ii) a Correcting the conveying speed of the buffer ascending and descending conveying belt of the xth buffer conveying unit to be K ₂ ×V _m [x](ii) a Correcting the conveying speed of the upper layer conveying steel belt of the x-th buffer conveying unit to be K ₃ ×V _s [x-1](ii) a Correcting the conveying speed of the lower layer conveying steel belt of the x-th buffer conveying unit to be K ₃ ×V _s [x]；

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

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

After S2, further comprising:

s3: if the duration that the material bed height of the movable end curve of any cache conveying unit exceeds a first preset height threshold value is detected to exceed a preset time, and/or the duration that the material bed height of the fixed end curve of any cache conveying unit exceeds the first preset height threshold value is detected to exceed a preset time, and/or a shielding object is detected to exist in the moving path direction of the cache capacity adjusting device, the first-in first-out cache conveying device is triggered to stop to alarm.

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

S2, further comprising:

when the cache capacity of the memory reaches the minimum capacity, sending a shutdown request to downstream material taking equipment of the first-in first-out cache conveying device; when the cache capacity of the memory is monitored to be lower than a first preset capacity, a downstream material taking device of the first-in first-out cache conveying device sends a speed reduction request; when the cache 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 cache conveying device; when the cache capacity of the memory reaches the maximum capacity, sending a shutdown request to upstream feeding equipment of the first-in first-out cache 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 through the method, and the method for adjusting the height of the conveyed material is provided according to the structural characteristics of the equipment, so that the problem that the conveyed material is disordered when the conveyed belt and the conveyed steel belt are excessively conveyed on the upper slope and the lower slope due to the height difference between the conveying belt and the mechanical structure of the conveyed steel belt of the storage in the conveying process of the rod-shaped material in the storage is solved; in the process of conveying rod-shaped materials in the storage device through bending, when the materials in the bending are too high, the materials in the bending can be blocked, and when the materials in the bending are too low, the materials can roll to a large extent, so that rod disorder can be caused.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a FIFO buffer transfer 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 cross-sectional view of a memory A-A according to an embodiment of the present invention;

fig. 4 is a flowchart of a fifo buffer transmission method according to an embodiment of the present invention;

fig. 5 is a diagram illustrating the relationship between the height control of the material layer and the speed of the control object according to the embodiment of the present invention.

Wherein the reference numerals are as follows:

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

h ₁ the first material bed height monitored by the upstream material bed height detection sensor 12; h is ₂ A second bed height monitored by a downstream bed height detection sensor 32; h is ₃ A third material bed height detected by a falling port material bed height detection sensor 34; h ₄ : the preset material conveying height of the storage device is the height of a fourth material layer; h ₅ : a first preset height threshold; h ₆ : a second preset height threshold; vc: an upstream feed rate; v ₁ : a first conveying speed; v ₃ : a third conveying speed; v ₄ : a fourth conveying speed; v _p : a downstream take-off speed; x: in n buffer memory conveying units in total, the number of the xth buffer memory conveying units from top to bottom is as follows; v _s [x-1]: fixed end of the xth buffer conveying unitThe slope conveying belt and the upper conveying steel belt are synchronously conveyed; v _s [x]: the synchronous conveying speed of a lower-layer conveying steel belt and a fixed-end uphill conveying belt of the xth buffer conveying unit is realized; v _m [x]: the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit are used for synchronously conveying; v ₂₂ : and adjusting the speed of the curve of the moving end moving 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 clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents 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 the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

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

As shown in fig. 1, the embodiment of the present invention provides a fifo buffer conveyance device, which includes an upstream conveyance device 1, a storage 2, a downstream conveyance 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 conveyor 3.

The electronic control system 4 is used for acquiring 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 transport state includes: the conveying speed of the upstream conveyor 1 and/or the conveying speed of the downstream conveyor 3 and/or the buffer capacity of the store 2 and/or the conveying bed height of the store 2.

Alternatively, the upstream conveyor 1 includes an upstream sampling conveying path 11, an upstream elevator and overhead horizontal conveying path 13, and an upstream material layer height detection sensor 12.

The inlet of the upstream sampling conveying channel 11 is butted with the upstream feeding device 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 hoister and the overhead horizontal conveying channel 13, and the outlet of the upstream hoister and the overhead horizontal conveying channel 13 is communicated with the inlet of the storage 2.

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

The electric 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 electric control system 4 also controls the conveying speed of the upstream hoister and the overhead horizontal conveying channel 13 according to the upstream feeding speed, the first material bed height and the preset fourth material bed height at the inlet of the memory 2.

Alternatively, the downstream conveyor 3 includes a downstream sampling conveying path 31, a downstream elevator and overhead horizontal conveying path 33, a falling mouth material layer height detection sensor 34, and a downstream material layer height detection sensor 32.

Wherein, the outlet of the storer 2 is connected to the downstream external equipment through a downstream sampling conveying channel 31, a downstream hoisting machine and an overhead horizontal conveying channel 33 in sequence.

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

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

The electric control system 4 also controls the conveying speed of the downstream elevator and the overhead horizontal conveying passage 33 according to the downstream material taking speed sent by the downstream feeding equipment of the first-in first-out buffer conveying device, the second material bed height, the third material bed height and the preset fourth material bed height 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 rack 26, a plurality of buffer conveyor units 21, and a buffer capacity adjusting device 22.

The cylinder type conveying steel belt rack 26 comprises a cylinder type support and a plurality of layers of annular conveying steel belts arranged on the cylinder type support; 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 plurality of buffer conveying units 21 are longitudinally arranged along the periphery of the cylindrical support and are connected end to end, and each buffer conveying unit 21 is arranged on the upper and lower layers of adjacent conveying steel belts; wherein the longitudinal direction is a direction parallel to the axial direction of the cartridge holder.

The buffer capacity adjusting device 22 is connected to the plurality of buffer conveyance 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 at the inlet and the outlet of the storage 2.

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

The material outlet end of the upper-layer cache conveying unit is a suspended end, and the outer side of the suspended end is provided with a convex arc-shaped moving end bend 214.

The material inlet end of the lower-layer cache 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-layer cache conveying unit is a suspended end, and the outer side of the suspended end is provided with an outer 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-layer buffer conveying unit comprises a fixed-end downhill conveying belt 211, an upper-layer conveying steel belt 212 and a buffer uphill conveying belt 213 which are sequentially arranged along the material conveying direction.

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

The lower-layer buffer conveying unit comprises a buffer downhill conveying belt 215, a lower-layer conveying steel belt 216 and a fixed-end uphill conveying belt 217 which are sequentially arranged along the material conveying direction.

In a possible implementation mode, the buffer downhill conveying belt 215, the lower layer conveying steel belt 216 and the fixed end uphill conveying belt 217 may be assembled in such a manner that a transition plate is installed in the material outlet direction of the buffer downhill conveying belt 215, and the transition plate is overlapped on the upper surface of the lower layer conveying steel belt 216; the fixed end uphill conveying belt 217 is provided with a transition plate in the material inlet direction, and the transition plate is lapped on the upper surface of the lower conveying steel belt 216.

Furthermore, a plurality of groups of bosses are uniformly distributed on the inner and outer rings of the upper-layer conveying steel belt 212 and the lower-layer conveying steel belt 216, and the bosses on the inner ring and the bosses on the outer ring have height difference.

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

The moving end curve material layer height detection sensor 241 is arranged on the outer side of the arc of the moving end curve 214, and is used for detecting whether the material layer height of the moving end curve 214 exceeds a first preset height threshold value or not and sending a detection result to the electric control system 4.

The fixed-end curve material layer height detection sensor 231 is arranged on the outer side of the arc of the fixed-end curve 218 and used for detecting whether the material layer height of the fixed-end curve 218 exceeds a first preset height threshold value or not and sending a detection result to the electronic control system 4.

Optionally, the buffer capacity adjustment device 22 includes a fixed mounting station assembly and a drive assembly.

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

The driving assembly is used for driving the ascending conveyor belt, the moving end bend 214 and the descending conveyor belt of each buffer conveyor unit 21 to horizontally move along the circumferential direction of the drum type support, so that the buffer capacity of the buffer conveyor unit 21 is adjusted 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 a position of the buffer capacity adjusting device corresponding to the minimum buffer capacity of the memory 2.

The second sensor is arranged at the full limit position of the buffer capacity adjusting device 22; the full limit position is a position of the corresponding buffer capacity adjusting means when the buffer capacity of the memory 2 is the 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 further used for receiving the trigger signals of the first sensor and the second sensor.

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

As shown in fig. 3, the moving-end anti-pinch safety monitoring sensor 220 is installed at the top end of the buffer capacity adjusting device 22, and detects whether there is a shielding object 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 there is a shielding object in the moving path direction of the buffer capacity adjusting device 22.

The electronic control system 4 is further configured to trigger the first-in first-out buffer conveyor to stop and alarm 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 a first preset height threshold for a duration exceeding a preset time and/or when an anti-pinch pulse signal is received.

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

In 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 by the method, and the method for adjusting the height of the conveyed material is provided according to the structural characteristics of the equipment, so that the problem that the conveyed material is disordered when the conveyed belt and the conveyed steel belt are excessively conveyed on the upward slope and the downward slope due to the height difference between the conveying belt and the conveyed steel belt mechanical structure of the storage in the conveying process of the rod-shaped material in the storage is solved; in the process of conveying rod-shaped materials in the storage device through bending, when the materials in the bending are too high, the materials in the bending can be blocked, and when the materials in the bending are too low, the materials can roll to a large extent, so that rod disorder can be caused.

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

and S1, acquiring the specified parameters of the upstream conveying device, the memory and the downstream conveying device of the first-in first-out buffer conveying device.

The first-in first-out buffer 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 embodiment, before obtaining the specified parameters, the fifo buffer transport device is first configured, and the specific configuration process may be: and adjusting the displacement reference of the control object. The gear ratio of the servo driver reducer of each controlled object is converted to ensure the unification of the actually output displacement references under the condition that the conveying objects are identical in time and speed.

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

1. the parameters set by the method comprise: material layer height detection sensor correction proportionality coefficient K ₁ Default value is 1, regulating range is 0.5-1.5; speed correction coefficient array K of conveying belt for bending in and out of each curve at fixed end ₄ [1,n]Wherein, the speed correction coefficient K of the fixed-end bend in-bending and out-bending conveying belt in the xth buffer conveying unit ₄ [x]Default value is 1, regulating range is 0.5-1.5; speed correction coefficient array K of conveying belt for bending in and out of each curve at movable end ₅ [1,n]Wherein, the speed correction coefficient K of the buffer bend inlet and outlet conveying belt in the xth buffer conveying unit ₅ [x]Default value is 1, regulating range is 0.5-1.5; the end of the upstream conveyor delivers a fourth bed height H at the inlet of the storage ₄ The default value is 90mm, and the adjusting range is 85mm-95 mm; first preset for conveying on downhill conveying belts, buffer uphill conveying belts, buffer downhill conveying belts and fixed end uphill conveying belts of all buffer conveying units in the memoryHeight threshold value H ₅ The default value is 70mm, and the adjusting range is 60mm-85 mm; second preset height threshold value H conveyed on upper layer conveying steel belt and lower layer conveying steel belt of all buffer conveying units in the storage ₆ Default value is 90mm, and adjusting range is 85mm-110 mm.

2. The parameters obtained by calculation include: correction factor for speed of material conveyed on belt

Correction factor for speed of conveying material on steel belt

3. The parameters detected by the sensors include: first material layer height h monitored by upstream material layer height detection sensor ₁ (ii) a The second material layer height h monitored by the downstream material layer height detection sensor ₂ (ii) a Third material layer height h monitored by falling port material layer height detection sensor ₃ 。

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

Wherein, the material transport 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, comprising:

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

Wherein the height h of the first material layer ₁ The actual material layer height of the material conveyed by the upstream sampling conveying channel monitored by the upstream material layer height detection sensor is detected, and the upstream feeding speed Vc is the current production speed of the cigarette making machine, for example.

S2, including:

according to the upstream feeding speed Vc and the height h of the first material layer ₁ And a preset fourth material layer height H at the inlet of the memory ₄ Controlling the upstream conveying device at the current moment to match the upstream feeding speedFirst transport speed V in degrees ₁ 。

In a possible embodiment, the first conveying speed V is ₁ The transfer speed of the shaft is delivered to the upstream elevator and is also the transfer speed of the inlet of the accumulator. Detect the actual height h of the materials conveyed by the upstream sampling conveying channel through the material layer height detection sensor ₁ For correcting the feed 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 ) Preferably, the calculation formula is shown in the following formula (1):

optionally, S1, comprising:

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

Wherein the height h of the third material layer ₃ The actual height of the material conveyed by the downstream packaging machine and the downstream material taking speed V which are monitored by the falling material layer height detection sensor _p The current production speed of the downstream packaging machine.

S2, including:

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

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

In one possible embodiment, the downstream sampling conveyor path is said to have a third conveying speed V ₃ Is the conveying speed of the outlet of the storage, and is obtained by the following two steps:

firstly, the methodDetecting the actual height h of the material conveyed by the downstream packing machine by a falling material layer height detection sensor ₃ For correcting the take-off speed V of downstream packaging machines _p Thereby obtaining a fourth conveying speed V of the downstream hoister and the overhead horizontal conveying passage ₄ ＝f(K ₁ ,h ₃ ,H ₄ ,V _p ) Preferably, the calculation formula is shown in the following formula (2):

then, the actual height h of the materials conveyed by the downstream sampling conveying channel is detected by a downstream material layer height detection sensor ₂ Simultaneously referencing the fourth conveying speed V of the downstream hoister and the overhead horizontal conveying passage ₄ Adjusting and correcting the third conveying speed V of the downstream sampling and conveying passage ₃ ＝f(K ₁ ,h ₂ ,H ₄ ,V ₄ ) Preferably, the calculation formula is shown in the following formula (3):

wherein, K ₁ The proportional coefficient is corrected for the material layer height detection sensor, the default value is 1, and the adjustment range is (0.5-1.5).

Optionally, the method is applied to a fifo buffer transportation apparatus, and step S1 further includes:

S2, further comprising the following steps A20-A40:

step A20: according to the formula

Calculating the speed V of the horizontal movement along the circumference of the cylinder type support required by the curve at the moving end at the current moment ₂₂ (ii) a Wherein the content of the first and second substances,n is the total number of buffered delivery units in memory.

Step A30: comparing the speed V of horizontal movement along the circumference of the drum type support required by the curve at the moving end at the current moment ₂₂ And 0.

In one possible implementation, the method for controlling the cache capacity of the memory includes: when V is ₂₂ >When the buffer memory capacity is 0, the driving component of the buffer memory capacity adjusting device drives the fixed mounting station component to expand along the circumferential direction of the memory to drive the movable end bend, the uphill conveying belt and the downhill conveying belt to move in the circumferential direction of the cylindrical support, so that the buffer memory capacity of the memory is in a material feeding state; when V is ₂₂ When the buffer capacity is equal to 0, the buffer capacity adjusting device is static, and the buffer capacity of the memory is in a balanced state; when V is ₂₂ <And when 0, the driving assembly of the buffer capacity adjusting device drives the fixed mounting station assembly to contract along the circumferential direction of the memory, and the buffer capacity of the memory is in a discharging state. Thereby realizing the 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 the present embodiment, the first multiple K ₅ [x]Values between [0.5, 1); second multiple K ₅ [x]In (1, 1.5)]Taking values; third multiple K ₄ [x]Values between [0.5, 1); fourth multiple K ₄ [x]In (1, 1.5)]BetweenAnd (4) taking values.

In a feasible implementation mode, the method for controlling the material height of the memory 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 method comprises the following specific steps:

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

(1) Curve material height control, need to call K ₄ [1,n]、K ₅ [1,n]And parameters for respectively correcting the speed of the conveying belt in the buffer conveying units, wherein the correction speed relation of each control object of the x-th buffer conveying unit in the n buffer conveying units is as follows:

the speed of the fixed-end downhill conveying belt and the upper-layer conveying steel belt for conveying materials is in a synchronous relation, and the speed after the curve material height correction is as shown in the following formula (4):

the speed of the lower layer conveying steel belt and the fixed end ascending conveying belt for conveying materials is in a synchronous relation, and the speed after the height correction of the materials passing through the curve is shown as the following formula (5):

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

(2) the realization of the height control of the curve materials is that the change adjustment K of the height of the materials of the fixed-end curve is detected by a material layer height detection sensor of the fixed-end curve ₄ [x]To realizeThe specific adjusting conditions for adjusting the height of the curve materials are as follows: when the material layer height of the fixed-end curve is detected by the sensor, the height of the material of the fixed-end curve is greater than a first preset height threshold value H ₅ When, K is ₄ [x]Enlarging; when the material layer height of the fixed-end curve is detected by the sensor, the material height of the fixed-end curve is equal to H ₅ When, K is ₄ [x]Setting the value as a fixed value; when the material layer height of the fixed-end curve is detected by the sensor, the height of the material of the fixed-end curve is less than H ₅ When, K is ₄ [x]Adding and reducing; similarly, the speed correction coefficient K of the conveying belt for the curve entrance and the curve exit of the cache curve is corrected by the material layer height detection sensor of the curve at the moving end in the x-th cache conveying unit ₅ [x]And (6) adjusting.

correcting the conveying speed of a fixed end downhill conveying belt of the xth buffer conveying unit to be K ₂ ×V _s [x-1]Correcting the conveying speed of the fixed end ascending slope conveying belt of the xth buffer conveying unit to be K ₂ ×V _s [x](ii) a Correcting the conveying speed of the buffer ascending and descending conveying belt of the xth buffer conveying unit to be K ₂ ×V _m [x](ii) a Correcting the conveying speed of the upper layer conveying steel belt of the x-th buffer conveying unit to be K ₃ ×V _s [x-1](ii) a Correcting the conveying speed of the lower layer conveying steel belt of the x-th buffer conveying unit to be K ₃ ×V _s [x]。

Wherein, V _s [x-1]The conveying speed V 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 _s [x]The conveying speeds V of the lower layer conveying steel belt and the fixed end ascending conveying belt of the x buffer conveying unit determined in the step B11 _m [x]The conveying speeds of the buffer ascending conveying belt and the buffer descending conveying belt of the xth buffer conveying unit determined in the step B11; k ₂ The second correction coefficient is the fourth material layer height at the inlet of the memory at the current momentA ratio to a first predetermined height threshold; k ₃ And the third correction coefficient is a value of 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, and the second preset height threshold value is greater than the first preset height threshold value.

After S2, further comprising:

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

When the material layer height 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 judges that the material layer is too high, so that the speed of the curve bending-in and bending-out conveyor is accelerated.

When the material layer conveyed by the fixed-end curve is blocked by the curve, the material blocking shutdown alarm is triggered and the first-in first-out cache device is shut down if the fixed-end curve material layer height detection sensor has a signal after the fixed-end curve material layer height detection sensor lasts for several seconds.

The function of the sensor for detecting the material layer height of the moving end bend is the same as that of the sensor.

S2, further comprising:

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

In one possible embodiment, the fifo buffer transmission method further includes transceiving signals to the chain device.

Wherein, the transmitting and receiving signal content to the upstream interlocking equipment comprises: and receiving and acquiring the feeding speed Vc of the upstream cigarette making machine, and sending a deceleration request or a stop request to upstream interlocking equipment. When a deceleration request for the upstream interlocking equipment is received, the upstream interlocking equipment reduces the production speed; when a shutdown request of the upstream interlocking equipment is received or a first-in first-out buffer conveying device is triggered to shut down and alarm, the upstream interlocking equipment stops producing.

The sending and receiving signal content to and from the downstream chain device comprises: receiving and acquiring downstream packaging machine material taking speed V _p And sending a deceleration request or a shutdown request to the downstream chain equipment. When a deceleration request for the downstream interlocking equipment is received, the downstream interlocking equipment reduces the production speed; and when a shutdown request of the downstream interlocking equipment is received or a first-in first-out buffer conveying device is triggered to shut down and alarm, the downstream interlocking equipment stops producing.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The first-in first-out buffer conveying device is characterized by comprising an upstream conveying device, a storage, 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 transport state comprises: 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.

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

the inlet of the upstream sampling conveying channel 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 is communicated with the upstream hoister and the inlet of the overhead horizontal conveying channel, and the outlets of the upstream hoister and the overhead horizontal conveying channel are communicated with the inlet of the storage;

the upstream material layer height detection sensor is arranged at the inlets of the upstream hoister and the overhead horizontal conveying channel, and is used for detecting the first material layer height at the inlets of the upstream hoister and 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 hoister and the overhead horizontal conveying channel according to the upstream feeding speed, the height of the first material bed and the preset height of a fourth material bed at the inlet of the storage.

3. The apparatus according to claim 1, wherein the downstream conveyor comprises a downstream sampling conveyor lane, a downstream elevator and overhead horizontal conveyor lane, a drop-off charge level detection sensor, and a downstream charge level detection sensor;

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

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

the downstream material bed height detection sensor is arranged at the inlets of the downstream hoister and the overhead horizontal conveying channel, and is used for detecting the second material bed height at the inlets of the downstream hoister and the overhead horizontal conveying channel and sending the second material bed height to the electric control system;

4. The device of claim 1, wherein the storage is a cylindrical structure and comprises a cylindrical 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 support and a plurality of layers of annular conveying steel belts arranged on the cylinder type support; 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 plurality of buffer conveying units are longitudinally arranged along the periphery of the cylinder type support and are connected end to end, and each buffer conveying unit is arranged on the upper layer of conveying steel belt and the lower layer of conveying steel belt which are adjacent; wherein the longitudinal direction is a direction parallel to an axial direction of the cartridge holder;

5. The device according to claim 4, wherein each buffer conveying unit comprises an upper buffer conveying unit, a lower buffer conveying unit, a moving end curve, a fixed end curve, 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 cache conveying unit is a suspended end, and the outer side of the suspended end is provided with an outward convex arc-shaped moving end curve;

the material inlet end of the lower-layer cache conveying unit is connected with the inner side of the lower end of the movable-end curve, the material outlet end of the lower-layer cache conveying unit is a suspended end, and the outer side of the suspended end is provided with an outward-convex arc-shaped fixed-end curve; the inner side of the lower end of the fixed-end curve is connected with a material inlet end of an upper-layer cache conveying unit of a next cache conveying unit;

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

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 material conveying direction;

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

and the fixed-end curve material layer height detection sensor is arranged on the outer side of the 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.

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 support;

the driving assembly is used for driving an ascending slope conveying belt, a moving end bend and a descending slope conveying belt of each buffer conveying unit to horizontally move along the circumferential direction of the cylindrical support, so that the buffer capacity of the buffer conveying units can be adjusted by adjusting the distance between the moving end bend and the fixed end bend.

7. The apparatus of claim 6, wherein the buffer capacity adjusting means further comprises a first sensor, a second sensor disposed inside the drum type conveyor steel belt rack; the drive assembly is provided with a position encoder;

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

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

the position encoder is used for detecting the real-time position of the cache 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.

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

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

the electric control system is also used for triggering the first-in first-out buffer conveying device to stop and alarm when the moving end curve material layer height detection sensor and/or the fixed end curve material layer height detection sensor detect that the material layer height of the moving end curve and/or the material layer height of the fixed end curve exceed a first preset height threshold for a duration exceeding a preset time and/or when the anti-pinch pulse signal is received.

9. A fifo buffer transfer method, the method comprising:

s1, acquiring the designated 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 conveying device comprises the storage, an upstream conveying device connected to the storage inlet, and a downstream conveying device connected to the storage outlet;

s2, controlling the material conveying state of the first-in first-out buffer conveying device according to the designated parameters; wherein the material transport state comprises: 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.

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

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

the 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 memory.