CN207019764U - The linear contact lay weighing device of soft object - Google Patents

Abstract

A kind of linear contact lay weighing device of soft object,It includes slideway of weighing,Slideway of weighing is along being weighed the smooth groove shape structure that object traffic direction both ends open and section are in concave shape,Groove-like structure is formed by sheet metal bending,Including the left risers on the left of slideway of weighing,Right risers and the slideway bottom plate of connection right risers and left risers on the right side of slideway of weighing,Left risers and slideway bottom plate intersection correspond to lower-left bending line,It is characterized in that,At least also include the right folding plate positioned at right risers top,Right folding plate upper right bending line corresponding with right risers intersection,All bending lines edges are weighed object traffic direction trend and are parallel to each other,Bending line corresponds to one section of Inner arc and one section of external arc respectively inside and outside metal plate bending angle,It is weighed object lower left quarter and Inner arc corresponding to the slideway plate upper surface and lower-left bending line on the inside of slideway left part of weighing while contacts,It is weighed the left low right highland of object and leans against and slides and weigh on slideway of weighing.

Description

The linear contact lay weighing device of soft object

Technical field

The application is related to automatic weighting field, more particularly to weight detecting scale and weight grading scale using slide plate scale.

Background technology

, it is necessary to carry out coding mark to the weight of article in the productions such as food, medicine, chemical product or packaging process, or press Production standard and metrological legislation checked the weight of article and overweight and ultralight product picked out, the needs also having Range is carried out by the weight of article, such as agricultural aquatic products and livestock product；These processes are required for weight detecting scale and weight It is classified scale.

The weight detecting scale of dynamic weighing platform is done using slide plate and weight grading scale is referred to as slide plate scale.Slide plate scale includes control Case processed, support, the weighing sensor being fixed on support, weighing sensor bearing end are fixed with the title for sliding and weighing for object Weight slide plate, during work, object is self to be moved on slide plate using the potential energy or inertia of itself weighing；Object while it is mobile, Weighing instrument or controller are while carry out weight detecting；Object continues with potential energy after the completion of detection or inertia leaves cunning of weighing Plate, moves on to the coding mark Ministry of worker or rejecting is sorted on mechanism or classification mechanism.

In existing dynamic slide plate weighing technology, to obtain high-precision weighing result, object need to keep stable athletic posture, All naturally use the posture for allowing object to try one's best low with center of gravity to contact to weigh slideway, that is, allow object to lie down and weighing platform Contiguously slide in face.To make object obtain enough freedom, being also reducing friction resistance, the weighing platform contacted with object is flat Face, or U, W uiform section groove, or row's parallel bar, the distance of the side of slideway two are both greater than the width of object.The side of slideway two Effect be served only for limit object not skid off weighing platform, be not used in the slideway track of specification object because object slide in once Encounter weighing platform side elevation, it will influence linear running speed and weighing precision.For V-arrangement section slot, object may be at obtuse angle V grooves in the S-shaped that swings slide, it is also possible to at least one side of V grooves be that face contacts, the especially box shaped object in six faces is sliding Row easily becomes a face of at least object and contacted with a face of V grooves, and weighing results are influenceed by the flatness in the face Greatly, and acute angle V grooves have a strong impact on the running length of object；Some are weighed object may be with the two sides that are distributed in of V grooves Each linear contact lay, this two straight lines will bear the total weight of object, but because the linearity of this two lines is not high enough, so Impact when object slips over to weighing sensor is very big, and weighing precision is not still high.

In a word, during existing dynamic slide plate is weighed, although object is all to lie on slide plate to slide face-to-face, due to slideway two Side does not limit the athletic posture of object, and object usually occurs in sliding process：1st, object bottom surface and slideway upper bottom surface connect for face Touch, roughness and the humidity difference of contact surface each point cause frictional force inconsistent, plus object every time upper weighing platform when landing point and Angular pose is different, appears in often and spins or walk curve on slideway；Object is not that uniform rectilinear slides, for equipped with bulk stream The object of dynamic content, which part content move when sliding because rotating or swinging in packaging bag box, cause the portion Point content is weightless or aggravate, the severe jamming result of weighing sensor.2nd, object is not that uniform rectilinear slides, and also results in inspection Scale switch board is sampled and handled to weighing data and be inconsistent again, influences weighing results.3rd, the flatness of slideway has error, object bottom The flatness error in face is often bigger, and the rough bottom surface of object and the rough upper surface of slide plate are slided, touched relatively Hit, cause to slideway namely big to the impulsive disturbance of weighing sensor；3rd, so, the different objects of same weight are even same When object slips over weighing platform every time, due to object operation posture is unordered and object bottom surface impact with slideway contacting surface bumps it is inconsistent, Cause that effect to weighing sensor and impact are different, and this impulsive disturbance is difficult by analog control technique or numeral Processing or calibration technique eliminate, and this has had a strong impact on weighing precision.

It is high for many dynamic weighing required precisions although slide plate check weighing scale greatly improves than belt-type check weighing scale precision Occasion, existing slide plate check weighing scale can't reach requirement.

Existing slideway weighing technology, to improve weighing precision, all effort all concentrate on following several respects：

1st, the flatness of weighing platform is improved.Selection flatness is good, material of good stability of the dimension and strictly planar processes Handling process, allow be weighed object contacted with slideway bottom surface of weighing it is more steady.

2nd, reduce weighing platform bottom surface and be weighed the frictional force of object.The small slide track materialses of coefficient of friction are selected, or in its table Face coats the coating of low-friction coefficient.

3rd, optimization is weighed the angle of inclination of slideway, is made to be weighed object and is traveled at the uniform speed as far as possible.

4th, strict control is weighed the speed for slideway of being weighed on object.

5th, design U channel-shaped weigh slideway two sides try one's best width, not encounter may wander off be weighed object, in order to avoid Influence is weighed the sliding speed and weighing results of object.

But or these effort are with high costs, or control difficulty is big, and does not all significantly improve slideway and weigh dress The weighing precision put.

The content of the invention

Deficiency in the weight detecting scale and the technology of weight grading scale weighed for use slide plate scale, the application is in not shadow The posture slided under the premise of object slides freely by limiting object is rung, proposition is a kind of to greatly improve the soft of slideway weighing precision The linear contact lay weighing device of matter object.

The application is adopted the technical scheme that：A kind of linear contact lay weighing device of soft object, it includes slideway of weighing, Slideway of weighing is that edge is weighed object traffic direction both ends open and section is in the smooth groove shape structure of concave shape, groove-like knot Structure is formed by sheet metal bending, including the left risers on the left of slideway of weighing, the right risers on the right side of slideway of weighing and company The slideway bottom plate of right risers and left risers is connect, left risers and slideway bottom plate intersection correspond to lower-left bending line, at least also include position Right folding plate in right risers top, right folding plate upper right bending line corresponding with right risers intersection, all bending lines edges are weighed thing Running body direction is moved towards and is parallel to each other, and bending line corresponds to one section of Inner arc and one section respectively inside and outside metal plate bending angle External arc, weigh on the inside of slideway the left part part of the close lower-left bending line by slideway plate upper surface, lower-left bending line successively Connection composition on the inside of corresponding Inner arc and left risers, upper right bending line are higher than lower-left bending line, in the upper right quarter for slideway of weighing Side successively by the inside of right risers, external arc corresponding to upper right bending line connect and form with the upper surface of right folding plate, be weighed object Lower left quarter and Inner arc corresponding to the slideway plate upper surface and lower-left bending line on the inside of slideway left part of weighing while contact, weigh Width on the inside of slideway, which is more than, is weighed the half of object bottom surface width, less than being weighed object bottom surface width and meet to weigh External arc corresponding to the upper right bending line of slideway contacts with being weighed object right part bottom surface, is weighed the left low right highland of object and leans to Slide and weigh on slideway weighing.

Because right folding plate and right risers are that the bending at upper right bending line of one block of plate forms, the linearity of upper right bending line from It is so very high.

Because slideway bottom plate and left risers are that the bending at the bending line of lower-left of one block of plate forms, the linearity of lower-left bending line Naturally it is very high, the flatness of part of part and left risers of the slideway bottom plate at the bending line of lower-left at the bending line of lower-left Also become higher simultaneously.

The specific feature of the application also has, and the upper right bending line for slideway of weighing meets to be claimed with respect to the height of lower-left bending line Amount object has the trend slided to the left when weighing forward slip on slideway.That is, for being weighed object and slideway bottom surface of weighing The coefficient of friction of upper surface, for design upper right bending line with respect to the height of lower-left bending line, object ought be weighed by, which making, is deviated to the right original To be weighed object lower left quarter Inner arc corresponding with the slideway plate upper surface on the inside of slideway left part of weighing and lower-left bending line Contact site after, external arc corresponding to slideway upper right bending line of weighing to be weighed in the active force of object it is horizontal to the left Component will be greater than being weighed the frictional force of the horizontal direction suffered by the lower left quarter of object, make to be weighed object have it is automatic to the left Recover the ability of original sliding trajectory.

Upper right bending line makes to be weighed object with respect to the height of lower-left bending line lifts an acute angle, this angle to upper right It is too big and too small, it can not all make to be weighed object when weighing forward slip on slideway with the ability slided to the left, it is necessary to In certain limit；Different coefficient of friction also makes this angular range different.

Inner arc corresponding to the bending line of slideway lower-left of weighing contacts with being weighed object lower left quarter, can prevent to be weighed thing Body is moved to the left, and specification is weighed the sliding trajectory of object.

Slideway of weighing is tilted down along being weighed object traffic direction.When weigh slideway along be weighed object traffic direction to Lower angle of inclination very little or it is horizontally disposed when, it is necessary to the velocity inertia and less coefficient of friction that larger initial velocity is brought, To slip over all working portion.

Weigh and also have a smooth change appearance slideway before slideway, become before and after appearance slideway and be divided into four parts：Horn mouth Section, the appearance flat segments that become, unilateral lifting section, transition feeding section；Length of each several part along object traffic direction can be according to being weighed Depending on object sliding speed, speed is faster, and length is longer；Typically, it is to be weighed being run along object for object to be respectively provided with its length The length in direction.The U-shaped trough-like channels that oared segrne pii is made up of bottom plate and vertical plates on both sides, passage are in that import is big, outlet is small Tubaeform, channel exit width is more than the width for being weighed object；Become appearance flat segments to be made up of bottom plate and vertical plates on both sides And extending the U-shaped trough-like channels formed naturally by oared segrne pii, the inlet and outlet opening size for becoming appearance flat segments is identical；One side lifting The passage that section is made up of the round bar of bottom plate, a cant board and a straight smooth, the cant board and bottom plate of one side lifting section are Become the upper right bending line homonymy arrangement of the natural extension of appearance flat segments, round bar and slideway of weighing, the top of the front end of round bar and change The upper surface flush of appearance flat segments exit bottom plate, the other end of round bar is concordant with the bending line on transition feeding section entrance top, Round bar front end is less than or equal to slideway inboard width of weighing to the distance of the cant board of unilateral lifting section；Transition feeding section is the bottom of by The U-shaped trough-like channels of plate and vertical plates on both sides composition, transition feeding section vertical plates on both sides gap ratio slideway inboard width of weighing is smaller, shape Shape and other sizes are identical with slideway of weighing, and transition feeding section exit position ratio is weighed slightly higher at chute inlet, and transition is suitable Material section exit is parallel with chute inlet of weighing to have gap relatively.

Weigh after slideway and also have a multiple appearance slideway, multiple appearance slideway is successively divided into multiple appearance changeover portion, unilateral whereabouts section and multiple Appearance flat segments three parts；Length of each several part along object traffic direction can be depending on object sliding speed be weighed, speed Faster, length is longer；Typically, it is to be weighed the length along object traffic direction of object to be respectively provided with its length.Multiple appearance changeover portion Vertical plates on both sides gap ratio is weighed, and slideway inboard width is big, and shape and other sizes are identical with slideway of weighing, and multiple appearance changeover portion enters Kou Chu positions ratio is weighed lower slightly at slide egress, and multiple appearance changeover portion porch is parallel with slide egress of weighing with respect to there is gap； The upper right of the passage that unilateral whereabouts section is made up of the multiple appearance round bar of bottom plate, a cant board and one, multiple appearance round bar and slideway of weighing is rolled over Curved line homonymy arranges that the cant board and bottom plate of unilateral whereabouts section are the natural extension of multiple appearance changeover portion, the front end of multiple appearance round bar Top flushed with the bending line exit at the top of multiple appearance changeover portion cant board, the other end of multiple appearance round bar enters with answering appearance flat segments The plate upper surface of mouth is concordant, the distance of multiple appearance round bar rear end to unilateral whereabouts section cant board and multiple appearance changeover portion vertical plates on both sides Apart from equal；The L-shaped cross-sectional passage that multiple appearance flat segments are made up of bottom plate and a cant board, the cant board of multiple appearance flat segments and bottom Plate is the natural extension of multiple appearance changeover portion.

Bracket is set weighing, the section of bracket is identical with the shape for slideway of weighing, wide between slideway and weighing sensor Degree passes through attachment screw rigidity slightly larger than the external width for slideway of weighing, slideway of weighing insertion bracket, bracket and weighing sensor Connection, bracket and slideway of weighing are rigidly connected.

The beneficial effect of the application：

A kind of linear contact lay weighing device of soft object of the application, the skill that slides of face contact is lied down compared to existing object Art, there is the beneficial effect of following unexpected protrusion：

First, the normalization of object sliding trace, repeatability are substantially improved, and weighing precision greatly improves.

The application acts against bending Inner arc on the inside of the left part for slideway of weighing by making to be weighed object, at the same with Plate upper surface on the inside of the slideway left part of weighing of preferable flatness only has small area contact, has both prevented and has been weighed an object left side Move, specification sliding trajectory, turn avoid the large-area planar contact that no preferable flatness ensures and bring weighing sensor Impact.For being weighed object and the coefficient of friction of slideway of weighing, the weigh upper right bending line of slideway of design limiting is higher than lower-left Bending line simultaneously allows and is weighed object and moves to left, and prevents and is weighed moving to right naturally for object, is also weighed by limiting The left low right height of object allows object center of gravity to be maintained at minimum state（To raise center of gravity because object right-hand member such as moves to right）, maintain weight The stability of the heart, moving to right for object right-hand member is also prevented, realizing neither influences the freedom that object slides, and also strictly regulates and protects The uniformity that object slides the sliding gesture in weighing every time has been held, has been weighed object by strictly close to the left surface for slideway of weighing Slided with bottom surface, prevent spin, swing, walking the problems such as curve during object operation.Check weighing scale can be repeated every time by being weighed object Running orbit of the switch board when being demarcated, this can greatly improve weighing precision.

And although the width of common U grooves herein before can be dimensionally with weighing object very close to due to not having Restricted to move left and right, as long as so there is gap, being weighed object will swing ground slideway, so as to cause change in friction force And then the speed of service is influenceed, and then influence to weigh the time used, cause weighing precision not high；If U well widths are with being weighed thing It is very good that body coordinates, and will be matched somebody with somebody due to the dimensional discrepancys of different objects, same object different parts with the different parts of U grooves Conjunction relation deviation, cause object operation not smooth, equally run weighing precision.

2nd, the stationarity that object slides is substantially improved, and weighing precision is substantially improved.

For relatively thin soft object, slideway of weighing is exactly slideway lower-left folding of weighing with the contact locus of points for being weighed object Column-shape curved surface that Inner arc corresponding to curved line is formed, along its length one on the slideway bottom plate of lower-left bending line The long narrow bar column that long narrow bar plane, external arc corresponding to slideway upper right bending line of weighing contact with being weighed object The linearity of the axis of a cylinder of curved surface, the two column-shape curved surfaces and strip plane is also peaceful with higher linearity because of bending line Row degree.

The application compared with prior art, lies down the influence factor to weighing precision from object what is contacted when sliding with object The flatness of slideway bottom surface is reduced to the linearity and the depth of parallelism of the bending line of above-mentioned several situations.Due to linearity and the depth of parallelism It is readily available and ensures than flatness, common bending machine and cutting die, so that it may, can be with so that the bending line after sheet metal bending is very straight Make the axis of a cylinder of the bending local surface after sheet metal bending very straight or a plurality of bending line is very parallel, at this moment, even if thing Body bottom surface is uneven, and the scheme of the application can also make object even running, and height of C.G. is consistent in operation, and Weighing control cabinet can Weighed parameter with easily optimizing slideway, so as to realize that high-accuracy weight exports.

Obviously, although the width of common U grooves herein before can be with size and object very close to due to being weighed thing Body contacts with the bottom surface for slideway of weighing for face, even if object running orbit specification, also due to the flatness for slideway bottom surface of weighing It is not high and do not reach high weighing precision.

3rd, face contact is changed to linear contact lay or the contact of small area face, significantly reduces absorption, electrostatic, the probability of lift appearance, Weighing precision is more stable.

The technical scheme of the application, different from existing slideway weighing technology, it is weighed object and reclines or lean against on slideway, Contacted with the face that slideway does not have large area, the face of a Line Contacts and small area contacts.No longer pass through due to being weighed object Bottom surface and the bottom surface sliding contact for slideway of weighing, the probability that sliding speed caused by there is Electrostatic Absorption slows down phenomenon drop significantly It is low；Also will not cause and the original such as drum in the packaging bag of ramps contact part deformation because of due to the bulk cargo movement in soft thin packaging bag Thus vacuum suction is produced between packaging bag and slideway and cause object sliding speed to slow down phenomenon；More due to being weighed object Also there is air lower section, and object will not produce the lift or pressure of flight, and then influence weighing precision.Then, the speed that object slides Spend more consistent, weighing precision is more stable, higher.

4th, manufacture difficulty and cost reduce.

Existing dynamic slide plate check weighing scale not only requires that the weight of weighing platform is as far as possible light, also to obtain high-precision weighing result It is required that object slides steadily, i.e., it is very high to the planarity requirements of weighing platform, cause manufacture difficulty high, yield rate is low, and cost is high.Because Weighing platform is lighter, and weighing precision is higher, it is necessary to which slideway of weighing is as far as possible light, in light weight to add so that easily being produced when doing flatness processing Work deforms, and high processing costs, the long-time stability of flatness are not high.The application can make linearity just with sheet metal bending Reach high precision, manufacturing cost is extremely low, linearity long-time stability are good.

5th, slideway of weighing tilts down along object traffic direction, makes to be weighed that object operation is more smooth, and weighing precision is more It is high.

Being weighed the left low right height of object moves to left it, and slideway of weighing tilts down along object traffic direction more will Increase upper right bending line and be applied to the left-hand horizontal component of the active force for being weighed object, increasing makes to be weighed that object moves to left inclines Tropism, it is ensured that object does not deviate by the lower left corner for slideway of weighing during sliding at the fast speed.

Brief description of the drawings

Fig. 1 is working state figure when weighing relatively thin soft object.In figure, 32- lower-lefts bending line, 33- bottom rights bending line, 34- upper right bending lines, 39- objects lower left quarter and slideway plate upper surface contact site, 55- are weighed object, 72- left risers, 73- slideway bottom plates, 74- right risers, 75- right folding plates, 99- weighing sensors.

Fig. 2 is the linear contact lay weighting device structure schematic diagram of soft object.In figure, 1- feeding unit materials, 2- becomes appearance slideway, 3- Weigh slideway, 231- round bars, the multiple appearance slideways of 4-, the multiple appearance round bars of 421-, 5- the first go-on-go slide plates, 52- rotary magnets, 6- second Go-on-go slide plate, 7- the first splicing units, 8- supports, 9- control cabinets, 10- go-on-go supports, 11- the second splicing units, 12- the 3rd connect Material unit.For arrow to be weighed object traffic direction, A-A is to obtain Fig. 1 profile direction.

Fig. 3 is Fig. 2 top view.In figure, 21- oared segrne piis, 22- becomes appearance flat segments, the unilateral lifting sections of 23-, 24- transition Feeding section, the multiple appearance changeover portions of 41-, 42- one side whereabouts section, the multiple appearance flat segments of 43-.

Fig. 4 is the schematic diagram weighed on the inside of slideway left part.

Embodiment

Embodiment：As Figure 2-3, the linear contact lay weighing device of a kind of soft object, including it is control cabinet 9, support 8, solid The weighing sensor 99 being scheduled on support 8, the bearing end of weighing sensor 99 are fixed with the slideway of weighing for sliding and weighing for object 3。

As shown in figure 1, the linear contact lay weighing device of soft object includes slideway 3 of weighing, slideway 3 of weighing is that edge is weighed thing The traffic direction both ends open of body 55 and section are in the smooth groove shape structure of concave shape, and groove-like structure is formed by sheet metal bending, Right risers 74 and connection right risers 74 and including the left risers 72 positioned at the left side of slideway 3 of weighing, positioned at the right side of slideway 3 of weighing The slideway bottom plate 73 of left risers 72, left risers 72 and the intersection of slideway bottom plate 73 correspond to lower-left bending line 32, it is characterized in that, at least Also include the right folding plate 75 positioned at the top of right risers 74, the upper right bending line 34 corresponding with the intersection of right risers 74 of right folding plate 75, institute Have bending line along be weighed the traffic direction of object 55 trend and be parallel to each other, bending line weigh correspond in the cross section of slideway metal plate roll over Bent angle, one section of Inner arc and one section of external arc are corresponded to inside and outside metal plate bending angle respectively, as shown in oval part in Fig. 4, Weigh on the inside of the left part of slideway 3 part of the close lower-left bending line 32 by the upper surface of slideway bottom plate 73, lower-left bending line 32 successively The corresponding inner side of Inner arc and left risers 72 connection composition, upper right bending line 34 are higher than lower-left bending line 32, the right side for slideway 3 of weighing The external arc as corresponding to the inner side of right risers 74, upper right bending line 34 connects group to upper inner with the upper surface of right folding plate 75 successively Into it is corresponding with the upper surface of slideway bottom plate 73 on the inside of the left part of slideway 3 of weighing and lower-left bending line 32 to be weighed the lower left quarter of object 55 Inner arc contact simultaneously, the width for the inner side of slideway 3 of weighing, which is more than, is weighed the half of the bottom width of object 55, less than being weighed The bottom width of object 55 and satisfaction weigh external arc corresponding to the upper right bending line 34 of slideway 3 with being weighed the right part bottom of object 55 Face contacts, and has the enough time and certain of weighing on slideway 3 to ensure to be weighed object 55 under certain sliding speed weighing Go-on-go efficiency of weighing, the length of slideway 3 of weighing typically be weighed object 55 along 1.3~5 times of the length of traffic direction it Between, it is weighed the left low right highland of object 55 and leans against and slides and weigh on slideway 3 of weighing.

As shown in figure 1, the upper right bending line 34 for slideway 3 of weighing meets to be weighed object with respect to the height of lower-left bending line 32 55 have the trend slided to the left when weighing forward slip on slideway 3.That is, for being weighed object 55 and the bottom plate of slideway 3 of weighing The coefficient of friction of upper surface, design upper right bending line 34 with respect to the height of lower-left bending line 32 make that object 55 ought be weighed to the right Deviate and be weighed the lower left quarter of object 55 and the upper surface of slideway bottom plate 73 on the inside of the left part of slideway 3 of weighing and lower-left bending line 32 originally After the contact site of corresponding Inner arc, external arc corresponding to the upper right bending line 34 of slideway 3 of weighing is to being weighed object 55 Horizontal component to the left in active force will be greater than being weighed the frictional force of the horizontal direction suffered by the lower left quarter of object 55, make by Weighing object 55 has the automatic ability for recovering original sliding trajectory to the left.

Inner arc corresponding to the lower-left bending line 32 of slideway 3 of weighing contacts with being weighed the lower left quarter of object 55, can prevent quilt Weigh object 55 to be moved to the left, specification is weighed the sliding trajectory of object 55.

Slideway 3 of weighing tilts down along the traffic direction of object 55 is weighed.Run when weighing slideway 3 along object 55 is weighed Direction tilt down angle very little or it is horizontally disposed when, it is necessary to the velocity inertia and less friction that larger initial velocity is brought Coefficient, to slip over all working portion.

Linear contact lay weighs the left risers 72 of slideway 3 and the height of right risers 74 can be with different, can be according to being weighed thing The thickness design of body 55, makes it meet the matching relationship of needs.

The application also has following features, and as shown in Figure 2,3, weighing device also includes feeding unit material 1, becomes appearance slideway 2, be multiple Appearance slideway 4, the first go-on-go slide plate 5, rotary magnet 52, the second go-on-go slide plate 6, the first splicing unit 7, the second splicing unit 11st, the 3rd splicing unit 12, go-on-go support 10, available for multipass sort.

As shown in Fig. 2 slideway 3 of weighing tilts down along the traffic direction of object 55 is weighed.Feeding unit material 1, become appearance slideway 2nd, weigh slideway 3, multiple appearance slideway 4, the first go-on-go slide plate 5, the second go-on-go slide plate 6 is tilted and is arranged in parallel successively, with respect to interface Place's height reduces successively.Purpose is to allow be weighed object 55 and self smoothly slip over all works just with gravitional force or initial velocity Make portion, reach farthest splicing unit 7.

As shown in Figure 2,3, weigh and also have a smooth change appearance slideway 2 before slideway 3, lying low originally in feeding unit material 1 Transporting flat on the object 55 that is weighed that moves become left end oblique top and lean against title in the lower left corner of slideway 3 of weighing, right side bottom surface Without the left low of the plane contact of large area in bull nose and with slideway 3 of weighing corresponding to the right side upper right bending line 34 of weight slideway 3 Right high posture of reclining.

As shown in Figures 2 and 3, four parts are divided successively before and after change appearance slideway 2：Oared segrne pii 21, the appearance flat segments 22 that become, unilateral act Section 23, transition feeding section 24 are risen, length of each several part along object traffic direction can be according to the sliding speed for being weighed object 55 Depending on, speed is faster, and length is longer；Typically, it is to be weighed the length along object traffic direction of object 55 to be respectively provided with its length.

The U-shaped trough-like channels that oared segrne pii 21 is made up of bottom plate and vertical plates on both sides, passage is in the loudspeaker that import is big, outlet is small Shape, channel exit width are more than the width for being weighed object 55；

Become the U-lag shape formed that by oared segrne pii naturally extended that appearance flat segments 22 are made up of bottom plate and vertical plates on both sides to lead to Road, the inlet and outlet opening size for becoming appearance flat segments are identical.Oared segrne pii 21 and the purpose for becoming appearance flat segments 22 are that handle is weighed thing Body 55 is suitable to be run into along fixed-direction；

One side lifting section 23 is by bottom plate, and the passage of the composition of round bar 231 of a cant board and a straight smooth, one side lifts The cant board and bottom plate of section 23 are the upper right bending line 34 of the natural extension for becoming appearance flat segments 22, round bar 231 and slideway 3 of weighing Homonymy arranges that round bar 231, which tilts, to be fixed in unilateral lifting section 23, and the top of the front end of round bar 231 goes out with becoming appearance flat segments 22 The upper surface flush of bottom plate, the other end of round bar 231 are concordant with the bending line on the entrance top of transition feeding section 24 at mouthful；Round bar 231 front ends are less than or equal to the inboard width of slideway 3 of weighing to the distance of the cant board of unilateral lifting section 23.One side lifting section 23 Purpose is that the right-hand member for being weighed object 55 is lifted, namely is vacantly set up object 55 is weighed；Allow and be weighed object 55 Smoothly slideway 3 of weighing is slid onto along round bar 231.

Transition feeding section 24 is the U-shaped trough-like channels being made up of bottom plate and vertical plates on both sides, and the two of transition feeding section 24 are edge-on Plate gap ratio is weighed, and the inboard width of slideway 3 is smaller, and shape and other sizes are identical with slideway 3 of weighing, and transition feeding section 24 goes out Kou Chu positions ratio is weighed, and slideway 3 is slightly higher, the exit of transition feeding section 24 is parallel with slideway 3 of weighing has gap relative；Purpose is true After guarantor slides onto slideway 3 of weighing, object 55 is weighed there is no the change of posture, while allows the flowing bulk material being weighed in object 55 Settle out in advance.

As shown in Figure 2,3, weigh after slideway 3 and also have a multiple appearance slideway 4, object 55 is weighed again what is set up The impact for entering next process and reducing as far as possible to the weighing sensor 99 under slideway 3 of weighing smoothly is laid flat, multiple appearance is slided The priority of road 4 is divided into multiple appearance changeover portion 41, unilateral whereabouts section 42 and the multiple three parts of appearance flat segments 43；Each several part is along object traffic direction Length can be depending on object sliding speed be weighed, speed is faster, and length is longer；Typically, it is quilt to be respectively provided with its length Weigh the length along object traffic direction of object.

The multiple vertical plates on both sides gap ratio of appearance changeover portion 41 is weighed, and the inboard width of slideway 3 is big, and shape and other sizes are with weighing Slideway 3 is identical, and the multiple porch position ratio of appearance changeover portion 41 weighs lower slightly, the multiple porch of appearance changeover portion 41 in the exit of slideway 3 with claiming The exit of weight slideway 3 is parallel to have gap relative, it is therefore an objective to ensures that being weighed the smooth-going of object 55 skids off slideway 3 of weighing.

Unilateral whereabouts section 42 is the passage of one cant board and a multiple composition of appearance round bar 421 by bottom plate, multiple appearance round bar 421 with Weigh slideway 3 the homonymy of upper right bending line 34 arrangement, wherein the cant board and bottom plate of unilateral whereabouts section 42 are multiple appearance changeover portion 41 natural extension, multiple appearance round bar 421, which tilts, to be fixed on the bottom plate of unilateral whereabouts section 42, the top of the front end of multiple appearance round bar 421 Portion flushes with answering the bending line exit at the top of the cant board of appearance changeover portion 41, the other end of multiple appearance round bar 421 is with answering appearance flat segments The plate upper surface of 43 entrances is concordant；Distance and multiple appearance changeover portion of the multiple rear end of appearance round bar 421 to the unilateral cant board of whereabouts section 42 The distance of vertical plates on both sides is equal.

The L-shaped cross-sectional passage that multiple appearance flat segments 43 are made up of bottom plate and a cant board, the cant board of multiple appearance flat segments 43 It is the natural extension of multiple appearance changeover portion 41 with bottom plate.

As shown in figure 1, the object being weighed is relatively thin flexible package object 55, it is 5 ± 0.1g of actual weight built-in bulk cargo Plastics soft wrapping bag, size be 50mm × 50mm × 4mm, feeding unit material and speed are the same.

Object 55 is stable slides to make to be weighed, the application and in the prior art, and all uses allow the length for being weighed object Slided along the traffic direction for being weighed object in direction.

Slideway of weighing is made from the thick 304 mirror face stainless steel bendings of 2mm in existing slideway weighing technology, and it is wide to be shaped as bottom surface The long 250mm of 200mm（Material line of travel）Rectangle, a height of 20mm of rib trough body structure.From the production of German HBM companies The aluminum PW2D of 7.2kg ranges（Long 130mm, wide 25mm, high 15mm, conduct oneself with dignity 250g）The western Tyke of single point weighing cell and Shandong Instrument Ltd. PLAC-5000 type weighing instruments, angle of inclination are 30 °.Test result is as follows：The standard of 20 bag continuous weightings Deviation is 0.025g, peak-to-peak value error is 0.075g.

The 72 high 8mm of left risers of slideway 3, right risers 74 high 13mm, groove inner width 36mm as shown in figure 1, the application weighs, Be weighed the right bottom surface of object 55 and upper right bending line 34 for external arc contact, the left end of flexible package object 55 is fillet, With the upper surface of slideway bottom plate 73 on the inside of the left part of slideway 3 of weighing and lower-left bending line 32 corresponding to Inner arc while contact, claimed Amount object 55 is a close lower-left bending line in section with the contact portion of slideway bottom plate 73 on the inside of the left part of slideway 3 of weighing 32 short-term section 39, in terms of the total length of slideway 3 of weighing, contact portion is a very narrow planar band.

The test result of the application is：The standard deviation of 20 bag continuous weightings is 0.015g, peak-to-peak value error is 0.045g. Because the linearity of lower-left bending line 32 is very high, the flatness of left risers and slideway bottom plate near it is also higher, so, knot of weighing Fruit precision is still very high, and standard deviation is reduced to the 60% of existing weighing technology.

It can be seen that compared to existing slideway weighing technology, the weighing precision of the application greatly improves.

Claims (3)

1. a kind of linear contact lay weighing device of soft object, it includes slideway of weighing, and slideway of weighing is that edge is weighed object operation Direction both ends open and section are in the smooth groove shape structure of concave shape, and groove-like structure is formed by sheet metal bending, including positioned at Weigh the left risers on the left of slideway, the right risers on the right side of slideway of weighing and the slideway bottom of connection right risers and left risers Plate, left risers and slideway bottom plate intersection correspond to lower-left bending line, it is characterized in that, at least also include positioned at the right side on right risers top Folded plate, right folding plate upper right bending line corresponding with right risers intersection, all bending lines along be weighed object traffic direction trend and It is parallel to each other, bending line corresponds to one section of Inner arc and one section of external arc, slideway of weighing respectively inside and outside metal plate bending angle The part of close lower-left bending line as slideway plate upper surface, Inner arc and a left side corresponding to the bending line of lower-left successively on the inside of left part Connection composition on the inside of riser, upper right bending line are higher than lower-left bending line, and the upper right quarter inner side for slideway of weighing is successively by right risers External arc corresponding to side, upper right bending line connects composition with the upper surface of right folding plate, is weighed object lower left quarter and slideway of weighing Inner arc corresponding to slideway plate upper surface and lower-left bending line on the inside of left part contacts simultaneously, and the width on the inside of slideway of weighing is big In be weighed the half of object bottom surface width, less than being weighed object bottom surface width and meet the upper right bending line of slideway of weighing Corresponding external arc contacts with being weighed object right part bottom surface, is weighed the left low right highland of object and leans against and is slided on slideway of weighing With weigh；

The upper right bending line of slideway of weighing meets to be weighed object and weighing on slideway to advancing slip with respect to the height of lower-left bending line There is the trend slided to the left when dynamic；

Slideway of weighing is tilted down along being weighed object traffic direction.

2. the linear contact lay weighing device of soft object according to claim 1, it is characterized in that, there is one before slideway of weighing Smooth change appearance slideway, become appearance slideway before and after be divided into four parts：Oared segrne pii, the appearance flat segments that become, unilateral lifting section, mistake Cross feeding section；The U-shaped trough-like channels that oared segrne pii is made up of bottom plate and vertical plates on both sides, passage is in the loudspeaker that import is big, outlet is small Shape, channel exit width are more than the width for being weighed object；Become appearance flat segments be made up of bottom plate and vertical plates on both sides and Extend the U-shaped trough-like channels formed naturally by oared segrne pii, the inlet and outlet opening size for becoming appearance flat segments is identical；One side lifting section The passage being made up of the round bar of bottom plate, a cant board and a straight smooth, the cant board and bottom plate of one side lifting section are to become The upper right bending line homonymy of the natural extension of appearance flat segments, round bar and slideway of weighing arranges that the top of the front end of round bar is with becoming appearance The upper surface flush of flat segments exit bottom plate, the other end of round bar is concordant with the bending line on transition feeding section entrance top, circle Bar front end is less than or equal to slideway inboard width of weighing to the distance of the cant board of unilateral lifting section；Transition feeding section is by bottom plate With the U-shaped trough-like channels of vertical plates on both sides composition, transition feeding section vertical plates on both sides gap ratio slideway inboard width of weighing is smaller, shape And other sizes are identical with slideway of weighing, transition feeding section exit position ratio is weighed slightly higher, transition feeding at chute inlet Section exit is parallel with chute inlet of weighing to have gap relatively.

3. the linear contact lay weighing device of soft object according to claim 1, it is characterized in that, there is one after slideway of weighing Multiple appearance slideway, multiple appearance slideway are successively divided into multiple appearance changeover portion, unilateral whereabouts section and multiple appearance flat segments three parts；Multiple appearance changeover portion two Cant board gap ratio is weighed, and slideway inboard width is big, and shape and other sizes are identical with slideway of weighing, multiple appearance changeover portion entrance Place's position ratio is weighed lower slightly at slide egress, and multiple appearance changeover portion porch is parallel with slide egress of weighing with respect to there is gap；It is single The passage that side whereabouts section is made up of the multiple appearance round bar of bottom plate, a cant board and one, the upper right bending of multiple appearance round bar and slideway of weighing Line homonymy arranges that the cant board and bottom plate of unilateral whereabouts section are the natural extension of multiple appearance changeover portion, the front end of multiple appearance round bar Top flushes with answering the bending line exit at the top of appearance changeover portion cant board, the other end of multiple appearance round bar is with answering appearance flat segments entrance Plate upper surface it is concordant, the distance of multiple appearance round bar rear end to unilateral whereabouts section cant board with answer appearance changeover portion vertical plates on both sides away from From equal；The L-shaped cross-sectional passage that multiple appearance flat segments are made up of bottom plate and a cant board, the cant board and bottom plate of multiple appearance flat segments It is the natural extension of multiple appearance changeover portion.