CN109701891B - Box bottom damage detection device and method for removing damaged smoke boxes according to detection device - Google Patents

Abstract

The invention discloses a smoke box bottom damage detection device and a method for removing damaged smoke boxes according to the detection device, wherein the detection device comprises: a chassis; the shaft is fixedly arranged on the underframe; the plurality of swinging assemblies are arranged on the shaft at intervals, and each group of swinging assemblies comprises at least one swinging piece which is arranged on the shaft in a penetrating way and can swing around the shaft; the distance measuring sensors are arranged on the bottom frame and correspond to the swinging pieces of the swinging assembly one by one; and the controller is accessed by all the ranging sensors. The underframe is fixed on a conveying track of a tobacco shred making elevated warehouse conveyor, the shaft is vertically installed with the conveying direction of the tobacco box, and the distance measuring sensor is positioned at the front side along the conveying direction of the tobacco box; the swing component is the core of the micro-motion part of the invention, converts the information of the surface profile of the wood board at the bottom of the box in the process of moving into the swing angle of the swing component, and then realizes the function of detecting the damage of the bottom of the cigarette box through the real-time acquisition and calculation of the subsequent distance measuring sensor and the controller.

Description

Box bottom damage detection device and method for removing damaged smoke boxes according to detection device

Technical Field

The invention relates to detection equipment, in particular to a cigarette box bottom damage detection device applied to a tobacco shred making elevated library and a method for automatically removing damaged cigarette boxes according to the detection device.

Background

After a new round of technical improvement, a cigarette factory generally adopts an elevated warehouse type material storage mode, and material storage carriers all adopt box type storage bodies which can be covered or uncovered and are in stainless steel structure, and are referred to as elevated warehouse cigarette boxes in the industry for short. The stereoscopic warehouse and the large-scale manufacturers of the automatic distribution logistics system adopt unified standards for the elevated warehouse system customized for tobacco shred manufacturing, and the bottom of the customized cigarette box adopts the same size and material.

The utility model discloses a chinese utility model patent that publication number is CN207336381U discloses a four camera finished product smoke box outward appearance detection device, including four detection CCD cameras, the LED light source, a camera, light source trigger switch and spacing track, the direction of delivery who establishes the smoke box conveyer belt is preceding, opposite direction is the back, utilize the camera, the condition in place of light source trigger switch response smoke box, after the smoke box detects targetting in place, trigger four detection CCD cameras and the work of LED light source, shoot, four detection CCD cameras set up respectively in the both sides of smoke box conveyer belt through independent camera support frame, every side sets up two, the front and back sets up, four detection CCD cameras constitute the rectangle structure, and every detects that CCD camera shoots trilateral of a top angle of smoke box.

The utility model discloses a chinese utility model patent that publication number is CN 204086162U discloses a smoke box appearance detection device, the frame sets up on the roller conveyor before putting in storage, left surface detection mechanism and right flank detection mechanism are respectively mated installs on two crossbeams about the frame, the upper end at the frame coexistence post is installed to top surface detection mechanism opposition each other, the vertical installation of front and back detection mechanism is on two stands of frame, the lower extreme at the frame coexistence post is installed to tray detection mechanism opposition each other, tray detection mechanism highly is less than the height of tray on the conveyer.

At present, the applicant has two tobacco shred elevated libraries in a tobacco shred manufacturing workshop, and more than 10000 tobacco shred boxes meeting tobacco logistics standards are put into use. The bottom of pipe tobacco case adopts wooden material as the support of pipe tobacco case, and this support direct action is said the surface with the rod of rod way conveyer in chain conveyor's chain, appears the damage when this wooden support, can arouse conveyer smoke box transmission failure, and serious can damage the chain and the rod way of conveyer, leads to equipment to shut down even. Aiming at the problem, only a passive prevention method can be adopted at present, when a tobacco shred box with a damaged bottom is found, the box number is manually recorded, and after the tobacco shred box completes a task, the tobacco shred box is manually rejected out of an elevated warehouse system. Because this wooden material, mechanical strength is low, causes the damage easily, when the damaged pipe tobacco case in bottom in the removal process of cleaning, vanning, case turning over, storage, influences the normal operating of equipment, causes to shut down the material absolutely, influences product quality.

Therefore, it is necessary to design a detection and removal device capable of automatically detecting the damage condition of the bottom of the smoke box and removing the smoke box based on the detection and removal device.

Disclosure of Invention

The invention provides a detection device for detecting the damage of the bottom of a cigarette box, which is applied to a tobacco shred making elevated warehouse.

A smoke box bottom damage detection device comprises:

a chassis;

the shaft is fixedly arranged on the underframe;

the plurality of swinging assemblies are arranged on the shaft at intervals, and each group of swinging assemblies comprises at least one swinging piece which is arranged on the shaft in a penetrating way and can swing around the shaft;

the distance measuring sensors are arranged on the bottom frame and correspond to the swinging pieces of the swinging assembly one by one;

and the controller is accessed by all the ranging sensors.

The underframe is fixed on a conveying track of a tobacco shred making elevated warehouse conveyor, the shaft is vertically installed with the conveying direction of the tobacco box, and the distance measuring sensor is positioned at the front side along the conveying direction of the tobacco box; the swing component is the core of the micro-motion part of the invention, converts the information of the surface profile of the wood board at the bottom of the box in the process of moving into the swing angle of the swing component, and then realizes the function of detecting the damage of the bottom of the cigarette box through the real-time acquisition and calculation of the subsequent distance measuring sensor and the controller.

The detection principle of the detection device of the invention is as follows: when no smoke box passes through, the swing mechanism restores to the initial state under the action of self weight, namely the swing angle is zero; when the smoke box arrives, the upper part of the swing mechanism is inclined towards the advancing direction of the smoke box due to the contact of the wood plate at the bottom of the smoke box, so that the whole swing mechanism deflects at an angle; if the wood at the bottom of the smoke box is not abraded, the swing mechanism always keeps the same swing angle in the whole process of the smoke box moving, and the swing angle is reflected to the distance between the swing mechanism and the distance measuring sensor, namely the distance is not changed; if the bottom of the cigarette box is wooden and defective, the swinging mechanism can rebound and cannot ensure that a swinging angle is always kept, so that the distance between the swinging mechanism and the distance measuring sensor can also change correspondingly, and the controller collects the change of the distance to judge whether the bottom of the cigarette box is damaged or not.

Preferably, the chassis includes:

two mutually parallel fixing strips;

at least two support frames fixed on the two fixing strips along the length direction of the fixing strips, and the shaft is arranged on the support frames.

The fixing strip is an aluminum alloy fixing strip which is a hollow fixing strip made of aluminum alloy materials commonly used in tobacco logistics and is mainly used for mounting the whole device on a tobacco making elevated warehouse conveyor.

The supporting frame is provided with a bottom plate fixed with the fixing strip and a supporting plate for supporting the shaft; the bottom plate and the fixing strip are fixed through the hexagon bolts with the gaskets and the bottom plate fixing nuts, so that supporting and fastening effects are achieved; the top of the supporting plate is provided with a mounting groove for mounting the shaft.

Preferably, the chassis further comprises a swinging piece reset magnet which is arranged on the chassis and positioned between the adjacent swinging assemblies.

Further preferably, the swinging piece resetting magnet is a north-south magnet; the south and north magnets are arranged into two groups, and each group of south and north magnets comprises an independent S pole and an independent N pole. The mounting is performed by a magnet mounting assembly.

The main effect of north-south magnet is that the physical characteristic of utilizing magnet attracts the pendulum piece to resume initial position, and the pendulum piece can realize restoring under its self action of gravity, increases the speed that resets that the pendulum piece can be strengthened greatly to the magnet that resets.

The number of the swing components is adapted to the bottom strip of the wooden part at the bottom of the smoke box. For example, the bottom strip of the wooden part at the bottom of the smoke box is 3, three groups of swing assemblies are correspondingly arranged, and the wooden part at the bottom of the smoke box is connected with the corresponding swing assemblies. Preferably, the number of the swinging pieces of each group of swinging assemblies is 2-5; the number of the swinging pieces of each group of swinging assemblies can be the same or different.

Preferably, the swing assembly further comprises:

the roller or the nylon spacer bush is arranged between the adjacent swinging pieces;

and the locking sleeves are respectively positioned at the outer sides of the two side swinging sheets and are sleeved on the shaft in a penetrating way.

The roller and the nylon spacer bush are buffer rings made of nylon materials and are used for separating the swinging pieces and keeping relative independence, and the difference between the roller and the nylon spacer bush is only installation position and size; the locking sleeve is arranged at two ends of the combination of the swinging sheet, the roller or the nylon spacer bush and mainly used for fixing the micro-motion mechanism body and preventing the micro-motion mechanism body from sideslipping and deviating from a detection target, namely limiting the swinging assembly to axially slide along the shaft.

Preferably, a portion of the swing piece located above the shaft in a state of being free from an external force is lighter than a portion located below the shaft. Further, the part above the shaft is smaller than the part below the shaft, and the part above the shaft is provided with a hollow hole.

The swing piece is the core part of the swing assembly, the shape of the swing piece is set to be 'light top and heavy bottom, small top and large bottom, hollow top and solid bottom', and when no smoke box passes through, the swing piece can reset to a swing angle of zero under the action of self gravity.

Further preferably, three groups of swing assemblies are arranged, and each group of swing assemblies comprises 2-4 swing pieces; the swinging sheets of the swinging assemblies can be the same or different.

Furthermore, the device is also provided with a judging component for detecting whether the smoke box passes through the object or not.

Preferably, the cigarette box further comprises a judging component for judging whether the passing object is a cigarette box, wherein the judging component comprises:

the mounting rack is arranged between the adjacent swing components, is sleeved on the shaft in a penetrating way, and can rotate relative to the shaft, and is provided with a shaft connecting part positioned on the shaft in a penetrating way, a plate connecting part positioned above the shaft and a swing arm positioned below the shaft;

the outer contour of the vertical plate is smaller than the inner recess of the bottom of the smoke box;

and the limit switch is arranged below the mounting rack, a probe of the limit switch faces the bottom of the swing arm, and the limit switch is connected to the controller.

The swinging piece reset magnet adopts a north-south magnet and comprises an independent S pole and an independent N pole; the swinging piece resetting magnet is installed between the adjacent swinging pieces through the magnet installation assembly and is located below the installation frame of the judging assembly.

Each group of the swinging piece resetting magnets comprises two groups of north and south magnets which respectively correspond to the swinging pieces on the two sides.

Further preferably, the magnet mounting assembly comprises:

the magnet supporting plate is fixedly arranged between the two fixing strips, and the N poles of the two groups of north and south magnets are fixed on the supporting plate;

and the S poles of the two groups of north and south magnets are correspondingly fixed at the bottom of the strong magnetic fixing seat.

And S poles and N poles of the magnets are respectively fixed on the corresponding brackets by adopting screws or bolts.

Magnet N level is fixed on the supporting baseplate, and is fixed, and magnet S level is installed in the swing arm bottom, follows the swing arm swing.

The probe of the limit switch vertically penetrates through the magnet supporting plate and is fixed on the magnet supporting plate; the fixing mode can adopt an upper nut and a lower nut for fixing. The limit switch is a limit switch commonly used in the art, for example, NBB2-12GM50-E0 manufactured by Beijiafu company can be selected.

The outline of the vertical plate is slightly smaller than the inner recess of the bottom of the smoke box without a wood bottom plate, preferably, the vertical plate is a stainless steel plate, the stainless steel plate can be matched with a limit switch below the stainless steel plate to identify whether the passing object is the smoke box, during detection, if the passing object is the smoke box, the stainless steel plate is positioned in a groove in the adjacent wood part at the bottom of the smoke box but is not contacted with the bottom of the smoke box, the mounting frame does not swing relative to the shaft, the swing arm is not moved, and the limit switch below is always in an effective detection state; if the object is not the smoke box, the stainless steel plate touches the non-smoke box object, the mounting rack swings relative to the shaft, and the swing arm swings by a certain angle, so that the lower limit switch is in an invalid detection state.

Further preferably, the plate connecting part is provided with a transverse bar hole; the two vertical plates are correspondingly connected to each mounting frame, and vertical bar holes used for being connected with the plate connecting portions and transverse bar holes used for interconnecting the two vertical plates are formed in the vertical plates. The vertical strip holes of the stainless steel plates correspond to the transverse strip holes in the steel plate connecting parts, the two stainless steel plates are fixedly connected through fastening bolts, and the two stainless steel plates are mutually connected and fixed through bolts penetrating the transverse strip holes of the two steel plates. The adjustable installation of stainless steel board is realized, and the height and the width of stainless steel board all can be finely tuned to the smoke box of not unidimensional.

Preferably, the device further comprises a sensor socket, wherein the sensor socket is fixed on the bottom frame through a base; the sensor socket is provided with a sensor clamping groove, the distance measuring sensor is arranged in the corresponding sensor clamping groove, and the probe end of the distance measuring sensor is opposite to the corresponding swinging sheet.

Further, the socket base is fixed on the fixing strip. The distance measuring sensor socket is installed on the distance measuring sensor base, the distance measuring sensor base is fixed on the aluminum alloy fixing strip through bolts, and a plurality of elliptical holes in the distance measuring sensor socket are suitable for installing a plurality of distance measuring sensors.

Preferably, the automatic cigarette box conveying device further comprises an execution module, wherein the execution module comprises an alarm display lamp connected to and controlled by the controller and a hardware interlocking signal line, and the hardware interlocking signal line is connected to the cigarette box conveying device PLC.

The electric control part comprises a distance measuring sensor, a limit switch, a control module and an execution module. Taking the example that each group of swing assemblies is provided with 3 swing pieces, the device is provided with nine distance measuring sensors, each distance measuring sensor corresponds to one long hole in a distance measuring sensor socket, and three distance measuring sensors are arranged in a left socket, a right socket and a middle socket and are respectively used for detecting the damage conditions of three wooden bottom plates at the bottom of the cigarette box; the position of the distance measuring sensor can be finely adjusted by adopting the design of the long groove; the distance measuring sensor can be a UB400-12GM-I-V1 distance measuring sensor produced by Beijiafu company, the type is a distance measuring sensor with programmable detection distance and 4-20mA analog output, the rotation angle of the core micro-motion component swing piece can be converted into the relative displacement between the tail of the swing piece and the probe of the distance measuring sensor, and the damage condition of the bottom of the smoke box can be estimated through the difference of the displacement change. The limit switch is mainly used in cooperation with a mechanical part mounting rack and a stainless steel plate and is used for identifying whether an object passing through is a smoke box: when the swing arm swings, the stainless steel plate acts, the limit switch cannot detect a signal, and the smoke box does not pass through the limit switch; when the swing arm does not swing, the stainless steel plate does not act, and the limit switch detects a signal, which indicates that the smoke box passes through.

The controller adopts a PLC, selects a Siemens S7-200 series PLC, expands two 8-channel analog input modules and is used for inputting signals detected by the distance measuring sensor into the controller; expanding a digital signal input module, wherein two digital input signals respectively receive smoke box arrival signals and smoke box departure signals from a conveyor PLC; and expanding a digital signal output module for outputting the detection result. The digital signal output module directly transmits the output signal to the execution module, and the execution module comprises an alarm display lamp and a hardware interlocking signal line. The alarm display lamp is used for directly displaying the detection result to field operators, and if the smoke box is not damaged or the damage degree is within the allowable range, the alarm display lamp does not flicker, and the hardware interlocking signal line has no output signal; if the cigarette box is damaged to a certain degree, the alarm display lamp flickers and gives an alarm sound to prompt field operators to remove the cigarette box, and meanwhile, the hardware interlocking signal line outputs 24V voltage and transmits the voltage to the PLC of the conveyor, so that the conveyor can execute an execution instruction for subsequent cigarette box removal.

Taking 9 swinging pieces and 9 ranging sensors as an example, in a PLC (programmable logic controller), a program is executed in a sequential and cyclic scanning mode by taking a fixed period as a unit, after the program is started, 9 initially calibrated ranging initial values are assigned to an array A [ a1, a2.. a9], then 9 ranging sensor measurement values of the current scanning period are recorded and stored to an array B [ B1, b2... B9], then whether a digital input DI (digital input) module receives a signal arriving from a PLC (programmable logic controller) smoke box is judged, and if yes, a smoke box damage detection subprogram is entered; if not, ending the scanning period program. After entering the smoke box damage detection subprogram, firstly, whether the limit switch is effective in detection is judged, if yes, the next procedure is continuously entered, and if not, a result, namely a non-smoke box, is output. After the next procedure, 2 scanning period distance measurement value differences, namely sensor ranging differences, are calculated firstly, and are assigned to an array C [ C1, c2... C9] ═ A [ a1, a2.. a9] -B [ B1, b2... B9], if more than 7 of 9 differences from C1 to C9 are larger than a set distance value formed by swinging of a swinging piece (actual measurement on site is needed), the smoke box is determined to just enter a detection area; if not, the smoke box continues to wait for entering a detection state. When the smoke box just enters the inspection area, the values c 1-c 9 are accumulated for each scan cycle, forming an array D [ Σ c1, Σ c2... Σ c9 ]. (i.e., d1 ═ Σ c1, d2 ═ Σ c2... d9 ═ Σ c 9). The entire process of accumulating the difference values cannot be finished until the smoke box leaving signal is received, and the accumulated values are stored to the array D [ Σ c1, Σ c2... Σ c9], and the array is copied to the DB array block 1. If the 9 accumulated values of d1 to d9 are all larger than a set value 1 (measured according to a smoke box test which is not completely broken in actual field), the difference value of the two values is calculated and assigned to an array E [ d1-d2, d2-d3, d3-d4... d9-d1], namely E1 ═ d1-d2, E2 ═ d2-d3, and E3 ═ d3-d4... 9 ═ d9-d1, and the difference values of every two values are copied to a DB number block 2. And (4) judging whether the 9 values of e 1-e 9 are all less than a set value 2 (measured according to a test of the smoke box which is not completely damaged in the field), and if the two conditions are met, outputting a result that the smoke box is not damaged. If any one of the conditions is not met, the output result is that the cigarette box is damaged and is transmitted to the conveyor PLC through a hardware interlocking signal line 24 to wait for the system to detect again or process manually.

The invention also provides a method for removing the damaged smoke box based on the smoke box bottom damage detection device, which comprises the following steps:

(1) the cigarette box bottom damage detection device is arranged between conveying rollers of a cigarette box conveying track, the shaft is arranged perpendicular to the cigarette box conveying direction, and the distance measurement sensor is positioned on the front side along the cigarette box conveying direction; the swinging angle of the swinging piece is 0 under the action of the gravity of the swinging piece, and the top edge of the swinging piece is flush with the top surface of the conveying roller or is slightly higher than the top surface of the conveying roller;

(2) the cigarette box runs along the conveying track, the wood part at the bottom of the cigarette box is contacted with the swinging assembly, the bottom of the swinging piece swings at a certain angle against the conveying direction of the cigarette box, and the distance between the swinging piece and the corresponding distance measuring sensor is changed and is transmitted to the controller by the distance measuring sensor;

(3) when the bottom of the smoke box is not damaged, the distance signal detected by the distance measuring sensor is unchanged in the process that the smoke box passes through; when there is the damage bottom the smoke box, the interval signal that the in-process range sensor that the smoke box passes through detected changes, and the controller passes through execution module suggestion staff this moment or sends and rejects signal to smoke box conveyer PLC, and artifical or automatic rejects the damaged smoke box.

Further, the method also comprises a judging step of detecting whether the passing object is the smoke box:

if the passing object is a smoke box, the vertical plate of the assembly is judged not to touch the box body, the mounting frame does not swing relative to the shaft, and the lower limit switch is always in a detection effective state and transmits a signal to the controller; if the object is not the smoke box, then judge that the vertical board of subassembly touches non-smoke box object, the mounting bracket leads to the limit switch of below to be in detection invalid state for the axle swing to give the controller with this signal transmission.

Compared with the prior art, the invention has the following beneficial effects:

according to the invention, as the mechanical principle that the swing mechanism is used as the microswitch is adopted, the profile information of the wooden base of the smoke box is converted into the rotation angle of the swing mechanism in nine points, then the rotation angle is converted into the displacement generated between the tail part of the swing mechanism and the distance measuring sensor, and finally the whole damage condition of the wood box is calculated through the distance detection and the algorithm in the controller, so that the automatic detection of the equipment is realized, and the accuracy and the coverage degree of the damage detection of the bottom of the smoke box are also improved. The invention adopts the algorithm of difference accumulation with the help of the high-performance CPU, and can self-define which damage degree of the smoke box should be removed according to the actual production requirement.

Drawings

Fig. 1 is a schematic front view of the present invention (for clarity, the present invention is split into two parts, namely, a chassis part and a shaft part, and in the figure, a shaft 6 shown by a dotted line in the chassis is a shaft 6 shown by a solid line in the shaft part).

Fig. 2 is a left side view of the present invention.

Fig. 3 and 4 are schematic views of the structure of the fixing strip.

Fig. 5-8 are schematic views of the supporting frame structure.

FIGS. 9 to 12 are schematic views of the structure of the magnet holder.

Fig. 13 is a schematic diagram of the south-north magnet S-pole structure.

Fig. 14 is a schematic view of the shaft structure.

Fig. 15 to 17 are schematic views of the structure of the locking sleeve.

FIGS. 18 to 20 are schematic views of the structure of the swinging plate.

FIGS. 21 to 22 are schematic views of roller structures.

FIGS. 23 to 26 are schematic views of the mounting bracket structure of the mechanical part of the judging unit.

FIGS. 27-29 are schematic views of the structure of the ferromagnetic fixing base.

FIG. 30 is a schematic view of a stainless steel plate structure.

FIGS. 31 to 33 are schematic views of the sensor socket structure.

FIGS. 34 to 35 are schematic views of the socket base structure.

Fig. 36 is a control portion schematic diagram.

FIG. 37 is a schematic view of the swinging piece and the position of the distance measuring sensor when the smokeless case passes through.

FIG. 38 is a schematic diagram of detection when a smoke box passes.

Fig. 39 is a flowchart executed in the PLC controller.

The reference numerals shown in the figures are as follows:

1-fixing strip 2-support frame 3-N pole magnet fixing frame

41-N pole magnet 42-S pole magnet 5-hexagon bolt with gasket

6-shaft 7-locking sleeve 8-swinging sheet

9-roller 10-mounting rack 11-nylon sleeve

12-strong magnetic fixed seat 13-stainless steel plate 14-bottom plate fixing nut

15-sensor socket 16-socket base 17-distance measuring sensor

18-control module 19-execution module 20-8 channel analog input module AI

21-digital signal output module DO 22-digital signal output module DI 23-alarm display lamp

24-hardware interlocking signal line 25-tobacco shred barrel

201-support plate 202-bottom plate

301-N pole magnet fixing part 302-connecting part 303-limit switch probe mounting hole

801-shaft sleeve 802-hollow hole

1001-shaft connecting part 1002-plate connecting part 1003-swing arm

1201-S pole magnet card slot 1202-connection hole

1301-vertical bar hole 1302-horizontal bar hole

1501-sensor card slot 1502-base connection

Detailed Description

For convenience of description, the terms "upper", "lower", "left" and "right" are used only in accordance with the orientation of the device in the use state.

A smoke box bottom damage detection device comprises a mechanical part and an electrical part.

The mechanical part is shown in the overall view of fig. 1 and 2 and comprises a chassis, a shaft, a swinging component, a judging component and a reset magnet component.

The chassis includes two fixed strips 1 that are parallel to each other and distributes along fixed strip length direction and be fixed in support frame 2 on the fixed strip, and the structure of fixed strip 1 is as shown in fig. 3 and fig. 4, and the fixed strip adopts the aluminum alloy fixed strip, and the aluminum alloy fixed strip is the hollow fixed strip of aluminum alloy material that tobacco commodity circulation is commonly used, mainly used with whole device installation on the overhead storehouse conveyer of making silk. The length of the device can be adjusted along with the width of the conveyor, and the device is mainly used for fixing and ensuring the level of a mounting surface as a standard during installation. The structure of the supporting frame 2 is as shown in fig. 5-8, and comprises a supporting plate 201 and a bottom plate 202, wherein the supporting plate is perpendicular to the bottom plate, the joint is welded and fixed, and the bottom plate 202 is fixedly arranged on an aluminum alloy fixing strip through a hexagon bolt with a gasket 5 and a bottom plate fixing nut 14, so as to play a role in supporting and fastening. The supporting plate is perpendicular to the top surface of the fixing strip, a groove is formed in the top of the supporting plate and used for installing the shaft 6, the number of the supporting frames is determined according to the length of the shaft and the arrangement number of the swinging assemblies, and 4 supporting frames are arranged in the embodiment shown in fig. 1. The technical requirements of the underframe are as follows: polishing and trimming each side; polishing the surface welding part smoothly; and (4) galvanizing the surface.

The structure of the shaft 6 is shown in fig. 14, and the shaft 6 is fixedly mounted on the support frame and does not rotate with the support frame. The shaft 6 is the center of rotation of the oscillating member of the entire apparatus, and extends through the entire apparatus. And galvanizing the surface of the shaft.

Swing assembly installs on axle 6, swing assembly sets up a plurality of groups, it is decided according to the wooden part quantity of waiting to detect the smoke box bottom to set up the quantity, as in the embodiment shown in figure 1, swing assembly sets up to 3 groups, every group swing assembly includes a plurality of swing pieces 8, with spaced gyro wheel 9 or nylon spacer 11 of adjacent swing piece and restriction swing assembly along the gliding lock sleeve 7 of axial of axle, in this embodiment, set up 3 swing pieces in every group swing assembly, adopt gyro wheel 9 interval between the swing piece of the swing assembly that is located both sides, adopt nylon cover interval between the swing piece of the swing assembly that is located the centre.

The structure of the swinging piece is as shown in fig. 18-20, the whole structure of the swinging piece is 'upper light lower heavy, upper big lower small, upper hollow lower solid', the swinging piece is provided with a shaft hole, a shaft sleeve 801 is arranged in the shaft hole, the shaft sleeve is made of black nylon, the part above the shaft hole is smaller than the part below the shaft hole, the part above the shaft hole is provided with a hollow hole 802, and the 'upper' and 'lower' are described by taking the case that the swinging angle of the swinging piece under the action of self gravity is 0 as an example. The shaft hole of the swinging piece is sleeved on the shaft, the shaft sleeve is positioned between the shaft hole and the shaft, and the swinging piece and the shaft can rotate relatively.

The structure of the roller is as shown in fig. 21 and 22, the roller is sleeved on the shaft and positioned between adjacent swinging pieces, and the roller 9 is a buffer ring made of nylon and has the function of isolating each swinging piece and keeping relative independence. In addition, the nylon spacer 11 is different from the roller 9 only in installation position and size, and sharp corners are required to be blunt. The locking sleeve is structurally shown in fig. 15-17, the locking sleeve 7 is arranged at two ends of the combination of the swinging sheet 8, the roller 9 or the nylon spacer bush 11 and mainly used for fixing the micro mechanism body and preventing the micro mechanism body from sideslipping and deviating from a detection target, and the locking sleeve needs to be blunt at a sharp corner, plated on the surface and provided with an M16X8 stud bolt.

Judge the subassembly setting between adjacent swing subassembly, set up two sets of judgement subassemblies in this embodiment, be located between the adjacent swing subassembly respectively, it includes mechanical part and electric part to judge the subassembly, mechanical part includes mounting bracket 10 and corrosion resistant plate 13, the structure of mounting bracket 10 is shown in fig. 23 ~ 26, including axle connecting portion 1001, be located the board connecting portion 1002 of axle one side and be located the swing arm 1003 of axle opposite side, axle connecting portion 1001 is the sleeve, the sleeve is worn to overlap epaxially, and can rotate relatively between the axle, axle sleeve one side connecting plate connecting portion 1002, the swing arm 1003 is connected to the opposite side relative with the board connecting portion, under the state shown in fig. 1, the board connecting portion are located the top of axle, the swing arm is located the below of axle. The board connecting portion is the lath, its face is on a parallel with telescopic axial installation, junction welded fastening, set up horizontal (unanimous with sleeve axial) bar hole on the lath, be used for connecting corrosion resistant plate 13, corrosion resistant plate 13's structure is shown in figure 30, be close to one of them side department and set up vertical bar hole 1301, be close to another side department adjacent to it and set up horizontal bar hole 1302, set up two steel sheets in every group judgement subassembly, can be through the bolt fastening who runs through horizontal bar hole between steel sheet and the steel sheet, the bolt fastening through the horizontal bar hole of vertical bar hole and the mounting bracket that runs through the steel sheet between steel sheet and the mounting bracket, realize the adjustable installation of steel sheet outline.

The swing arm adopts vertical slat, and its face perpendicular to telescopic axial installation, the bottom of swing arm has the through-hole for install strong magnetism fixing base 12. The electric part of the judgment assembly comprises a limit switch, the limit switch is arranged below the mounting frame, a probe of the limit switch is opposite to the bottom of the swing arm, and NBB2-12GM50-E0 manufactured by Beijiafu company can be selected.

The two groups of north and south magnets are respectively arranged on two sides of the swing arm 1003, each group of north and south magnets comprises an N-pole magnet 41 and an S-pole magnet 42, the S-pole magnet 42 is as shown in fig. 13, and the shape of the N-pole magnet is substantially the same as that of the S-pole magnet. S utmost point magnet 42 passes through strong magnetism fixing base 12 fixed mounting in the both sides of swing arm 1003 bottom, and strong magnetism fixing base 12 is as shown in 27 ~ 29, and strong magnetism fixing base is whole cylindrically, and the axle center sets up connecting hole 1202, and this connecting hole passes through the connecting piece to be connected with the through-hole on the swing arm 1003, and each symmetry in both sides sets up a strong magnetism fixing base 12, and strong magnetism fixing base one side towards the below sets up S utmost point magnet draw-in groove 1201, and S utmost point magnet passes through the fix with screw in this draw-in groove. The N-pole magnet 41 is installed right below the corresponding S-pole magnet through the N-pole magnet fixing frame 3, the N-pole magnet fixing frame 3 is structured as shown in fig. 9 to 12, and includes an N-pole magnet fixing portion 301 and connecting portions 302, the connecting portions are located on both sides of one end of the magnet fixing portion and are formed by bending stainless steel sheets, and the two connecting portions are fixed to the fixing strips corresponding to both sides, so that the N-pole magnet fixing portion 301 is located between the two fixing strips and slightly lower than the bottoms of the fixing strips. The two N-pole magnets 41 are fixed to the N-pole magnet fixing portion 301, and may be fixed to the top surface or the bottom surface of the fixing portion, and fixed by bolts, and the N-pole magnets 41 are located right below the corresponding S-pole magnets.

The N-pole magnet fixing part 301 is provided with a limit switch probe mounting hole 303 which is a strip-shaped hole and is located right below the bottom of the swing arm, a probe of the limit switch is fixed by a nut from top to bottom through the strip-shaped hole, the end part of the probe faces the bottom of the swing arm, and the limit switch is connected and controlled.

One side (along the front side of smoke box direction of delivery) of fixed strip sets up sensor socket 15, and sensor socket 15 is equipped with a plurality of sensor draw-in grooves 1501 on the sensor socket as shown in fig. 31-33, and the draw-in groove opening is up, is fixed in on the fixed strip through socket base 16, and socket base 16 is shown in fig. 34 and 35, and the draw-in groove is located and swings the corresponding position of piece bottom height department. The base passes through the bolt fastening on the aluminum alloy fixed strip, and a plurality of oval empty suitable a plurality of range sensors of installation on the range sensor socket.

Fig. 36 shows a block diagram of an electrical control part, which comprises a distance measuring sensor 17, a limit switch, a control module 18 and an execution module 19. The device is provided with nine distance measuring sensors 17, each distance measuring sensor corresponds to one long hole in the distance measuring sensor socket 15, three distance measuring sensors are arranged in a left socket, three distance measuring sensors are arranged in a right socket, and three distance measuring sensors are arranged in a middle socket and are respectively used for detecting the damage conditions of three wooden bottom plates at the bottom of the smoke box; the position of the distance measuring sensor 17 can be finely adjusted due to the design of the long groove; the ranging sensor 17 can be a UB400-12GM-I-V1 ranging sensor manufactured by Kyofu corporation, which is a ranging sensor with programmable detection distance and 4-20mA output analog quantity. Before the device is used, the measurement range of the device can be customized through a simple calibration step, and the minimum measurement distance (for output with 4 mA) and the maximum measurement distance (for output with 20 mA) are respectively set.

The limit switch is used primarily in conjunction with the mechanical section swing arm weld assembly 10 and the stainless steel plate 13 to identify whether the passing object is a smoke box.

The outer contour of the adjustable stainless steel plate 13 is slightly smaller than the inner recess of the bottom of the smoke box without a wood bottom plate through the adjustable function, the design can be matched with a limit switch arranged below to identify whether the passing object is the smoke box, if the passing object is the smoke box, the stainless steel plate 13 cannot touch the box body, the swing arm does not swing relative to the shaft 6, and the limit switch below is always in an effective detection state; if the passing object is not a smoke box, the stainless steel plate 13 touches the non-smoke box object, and the swing arm swings relative to the shaft 6 to cause the lower limit switch to be in an invalid detection state.

The control module 18 selects Siemens S7-200 series PLC, expands two 8-channel analog input modules 20 and is used for inputting signals detected by the nine ranging sensors 17 into the controller; the PLC expands a digital signal input module 22, and the two digital input signals respectively receive smoke box arrival signals and smoke box departure signals from the conveyor PLC; and a digital signal output module 21 is further developed for outputting the detection result. The digital signal output module 21 directly transmits the output signal to the execution module 19, and the execution module 19 comprises an alarm display lamp 23 and a hardware interlocking signal line 24. The alarm display lamp 23 is used for directly displaying the detection result to a field operator, if the smoke box is not damaged or the damage condition is within the allowable range, the alarm display lamp 23 does not flicker, and the hardware interlocking signal line 24 has no output signal; if the cigarette box is damaged to a certain degree, the alarm display lamp 23 flickers and gives an alarm sound to prompt field operators to perform rejection processing, and meanwhile, the hardware interlocking signal line 24 outputs 24V voltage which is transmitted to the conveyor PLC, so that the conveyor can perform an execution instruction of subsequent cigarette box rejection.

The detection principle of the invention is shown in fig. 37 and 38, as shown in fig. 37, when no smoke box passes through, the swinging piece 8 recovers the initial state under the action of the magnetic force of north and south poles and the action of self weight of 'up-down-weight', namely the swinging angle is zero, at this time, the distance between the lower part of the swinging piece 8 and the distance measuring sensor 17 is farthest, and the measured value is the largest; as shown in fig. 38, when the cigarette box arrives, the upper part of the swing piece 8 is inclined towards the advancing direction of the cigarette box due to the contact of the wood board at the bottom of the cigarette box, so that the real swing piece 8 is deflected angularly, and the distance between the lower part of the swing piece 8 and the distance measuring sensor 17 becomes minimum. In the smoke box carrying out process, the distance between the lower part of the swinging piece 8 and the distance measuring sensor 17 is monitored, so that the profile information of the wood material at the bottom of the smoke box can be obtained, and the result of the damage degree can be obtained through the PLC.

In the PLC controller, the flow of the executed program is as shown in fig. 39, the program is executed in a sequential cyclic scanning manner with a fixed period as a unit, after the program starts, the initially calibrated 9 ranging initial values are assigned to an array a [ a1, a2.. a9], then the measured values of 9 ranging sensors in the current scanning period are recorded and stored in an array B [ B1, b2... B9], then it is determined whether the digital input DI module receives a signal from a PLC smoke box of a conveyor, and if so, the smoke box breakage detection subroutine is entered; if not, ending the scanning period program. After entering the smoke box damage detection subprogram, firstly, whether the limit switch 17-2 is effective is judged, if so, the next procedure is continuously entered, and if not, a result, namely a non-smoke box, is output. After the next procedure is carried out, 2 scanning period distance measurement value differences, namely sensor ranging differences, are calculated firstly and are assigned to an array C [ C1, c2... C9] ═ A [ a1, a2.. a9] -B [ B1, b2... B9], and if more than 7 of 9 differences from C1 to C9 are larger than a set distance value formed by swinging of the swing mechanism (actual measurement on site is needed), the smoke box is determined to just enter a detection area; if not, the smoke box continues to wait for entering a detection state. When the smoke box just enters the inspection area, the values c 1-c 9 are accumulated for each scan cycle, forming an array D [ Σ c1, Σ c2... Σ c9 ]. (i.e., d1 ═ Σ c1, d2 ═ Σ c2... d9 ═ Σ c 9). The entire process of accumulating the difference values cannot be finished until the smoke box leaving signal is received, and the accumulated values are stored to the array D [ Σ c1, Σ c2... Σ c9], and the array is copied to the DB array block 1. If the 9 accumulated values of d1 to d9 are all larger than a set value 1 (measured according to a smoke box test which is not completely broken in actual field), the difference value of the two values is calculated and assigned to an array E [ d1-d2, d2-d3, d3-d4... d9-d1], namely E1 ═ d1-d2, E2 ═ d2-d3, and E3 ═ d3-d4... 9 ═ d9-d1, and the difference values of every two values are copied to a DB number block 2. And (4) judging whether the 9 values of e 1-e 9 are all less than a set value 2 (measured according to a test of the smoke box which is not completely damaged in the field), and if the two conditions are met, outputting a result that the smoke box is not damaged. If any one of the conditions is not met, the output result is that the cigarette box is damaged and is transmitted to the conveyor PLC through a hardware interlocking signal line 24 to wait for the system to detect again or process manually.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention. The application range of the invention is not limited to the detection of the damage of the tobacco boxes in the tobacco elevated warehouse, and can be applied to the detection of the damage of daily life and other box bodies.

Claims (7)

1. The utility model provides a damaged detection device of smoke box bottom which characterized in that includes:

a chassis;

the shaft is fixedly arranged on the underframe;

the plurality of swinging assemblies are arranged on the shaft at intervals, each group of swinging assemblies comprises at least one swinging piece which is arranged on the shaft in a penetrating way and can swing around the shaft, and also comprises a roller or a nylon spacer bush which is arranged between the adjacent swinging pieces and a locking sleeve which is respectively positioned at the outer sides of the two side swinging pieces and is sleeved on the shaft in a penetrating way; the distance measuring sensors are arranged on the bottom frame and correspond to the swinging pieces of the swinging assembly one by one;

the controller is accessed to all the ranging sensors:

the swinging piece resetting magnet is arranged on the underframe and is positioned between the adjacent swinging assemblies;

judge the subassembly for judge whether be the smoke box through the object, include: the mounting rack is arranged between the adjacent swing components, is sleeved on the shaft in a penetrating way, and can rotate relative to the shaft, and is provided with a shaft connecting part positioned on the shaft in a penetrating way, a plate connecting part positioned above the shaft and a swing arm positioned below the shaft; the outer contour of the vertical plate is smaller than the inner recess of the bottom of the smoke box; and the limit switch is arranged below the mounting rack, a probe of the limit switch faces the bottom of the swing arm, and the limit switch is connected to the controller.

2. The smoke box bottom breakage detecting device according to claim 1, wherein the chassis includes:

two mutually parallel fixing strips;

at least two support frames fixed on the two fixing strips along the length direction of the fixing strips, and the shaft is arranged on the support frames.

3. The apparatus for detecting a breakage of a bottom of a cigarette box according to claim 1, wherein a portion of the swing piece located above the shaft is lighter than a portion located below the shaft in a state where the swing piece is not subjected to an external force.

4. The smoke box bottom breakage detecting device according to claim 1, wherein the plate connecting portion is provided with a lateral slit; the two vertical plates are correspondingly connected to each mounting frame, and vertical bar holes used for being connected with the plate connecting portions and transverse bar holes used for interconnecting the two vertical plates are formed in the vertical plates.

5. The smoke box bottom breakage detecting device according to claim 1, further comprising a sensor socket fixed to the chassis by a base; the sensor socket is provided with a sensor clamping groove, the distance measuring sensor is arranged in the corresponding sensor clamping groove, and the probe end of the distance measuring sensor is opposite to the corresponding swinging sheet.

6. The smoke box bottom breakage detecting device of claim 1 further comprising an execution module including an alarm display light and a hardware interlock signal line connected to the smoke box conveyor PLC and controlled by the controller.

7. A method for rejecting damaged smoke boxes based on the device for detecting the damage of the bottom of the smoke box as claimed in any claim 1 to 6, which comprises the following steps:

(1) the cigarette box bottom damage detection device is arranged between conveying rollers of a cigarette box conveying track, the shaft is arranged perpendicular to the cigarette box conveying direction, and the distance measurement sensor is positioned on the front side along the cigarette box conveying direction; the swinging angle of the swinging piece is 0 under the action of the gravity of the swinging piece, and the top edge of the swinging piece is flush with the top surface of the conveying roller or is slightly higher than the top surface of the conveying roller;

(2) the cigarette box runs along the conveying track, the wood part at the bottom of the cigarette box is contacted with the swinging assembly, the bottom of the swinging piece swings at a certain angle against the conveying direction of the cigarette box, and the distance between the swinging piece and the corresponding distance measuring sensor is changed and is transmitted to the controller by the distance measuring sensor;

(3) when the bottom of the smoke box is not damaged, the distance signal detected by the distance measuring sensor is unchanged in the process that the smoke box passes through; when there is the damage bottom the smoke box, the interval signal that the in-process range sensor that the smoke box passes through detected changes, and the controller passes through execution module suggestion staff this moment or sends and rejects signal to smoke box conveyer PLC, and artifical or automatic rejects the damaged smoke box.

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