CN1937932A

CN1937932A - A method and device for inspecting the interior of a footwear

Info

Publication number: CN1937932A
Application number: CNA2005800106749A
Authority: CN
Inventors: R·隆巴尔多
Original assignee: ELETTROTECNICA B C S P A
Current assignee: ELETTROTECNICA B C S P A
Priority date: 2004-03-30
Filing date: 2005-03-24
Publication date: 2007-03-28
Also published as: ITMI20040620A1; BRPI0508198A; EP1729606A1; WO2005094623A1

Abstract

A method for inspecting the inside of a shoe, comprising the following steps: a. arranging at least one inflatable body within the shoe (1,4,101a,101b,101c,104); b. inflating, by means of a controlled amount of fluid, said inflatable body within the shoe (9,10) until the inflatable body, or a part thereof, is substantially rested on at least a portion of an inner wall of the shoe; c. after inflation, measuring and/or evaluating the internal pressure of the inflatable body and/or the force applied by said portion of an inner wall of the shoe against said inflatable body, or vice versa.

Description

The detection method of footwear inside and device

Technical field

The present invention relates to a kind of footwear (or footwear) inner detection method and a kind of device of implementing described method.

Background technology

As everyone knows, in shoe-making field, shoemaking (or footwear) as footwear, boots, slippers etc., mutually or its different assemblies of successive combination, as upper-part (or vamp), reinforcement, arch of foot supporter, sole, heel spare and shoe-pad sheet (or shoe-pad).

Specifically, according to a kind of very simple operation, this combination reaches with the support shoe tree, reproduces the support shoe tree of user's pin, before each parts of footwear are determined mutually to fix, can make their combinations.Therefore, vamp at first temporarily is fixed on the supporter, detachably the shoe-pad sheet is fixed on the shoe tree usually then, the arch of foot supporter is fixed on the vamp, and sole is fixed on the arch of foot supporter again.The operation that these are fixed on shoe tree on the supporter or selectively each parts of footwear are fixed together in revocable mode is generally undertaken by mechanical clamping device, and clamping device is not only thin but also sharp, so that penetrate each parts of footwear; General its made by plastics or metal, can be nail, brad, bipod pin, clasp nail, hobnail etc.These mechanical grip parts are being dismantled before the last sole and before footwear are made at last usually.

After described finished product operation finishes, carry out the quality examination of footwear usually, the inside that also comprises footwear is detected, and this detection can be with the naked eye, to touch and/or to detect with detector to small part.

The detection of footwear inside has the binomial task, the one, the local existence of inspection any discomfort maybe may be omitted mechanical grip part or other scar spares of dismantling, and another is to detect geometric shape, shape just, the mutual arrangement and the position of the inner each several part of footwear, " instep " (or " size ") of the footwear that limited as vamp, reinforcement and shoe-pad sheet, that is, and the footwear wearing comfortableness.

About the position of vamp, reinforcement, shoe-pad sheet and other interior sections of the shape of footwear and footwear and the detection of arranging mutually, this is a conventional detection concerning a skilled testing staff, skilled testing staff puts his hand or pin into shoe lining, can differentiate any abnormal shape or composition error according to its sense of touch.Measure the sense of touch check of instep quality for this essential being intended to, also can combine with the quantitative measurment of geometry in the footwear, this can measure by so-called " amount foot meter ", and this is a kind ofly to be suitable for measuring the inner footwear back of the body of footwear and to enclose long instrument, also can be by tape measure.

When the sample footwear in a large amount of productions of test, the detection particular importance of footwear internal geometry.In fact, because the internal geometry of sample footwear can be done various conversion to the support shoe tree, vamp, reinforcement, arch of foot supporter, sole, heel spare and the shoe-pad sheet that footwear are defined as the best " instep " (or " size ") before detecting.

Carrying out described sense of touch when detecting, the testing staff also can examine the inappropriate existence of knowing any mechanical grip part, but the injury that he will stand shouting pain and cut.

For this reason, developed the inner technology that detects automatically of several footwear, purpose is to differentiate the mechanical grip part of may do not dismantled before sense of touch detection step subsequently.

May be in order to differentiate at the interim holder of shoe lining, BRITISH UNITED SHOEMACHINERY COMPANY, LTD. GB 0.717.487, and a kind of metal detector of the US2.385.271 of HILTON instruction use, can detect variation or the variation in electric current is flowed through a circuit that is fit in electromagnetic field (EMF).Although this method is automatically, when the mechanical grip part is made of plastic, still can not adopt, and when footwear were equipped with metal jewelry or structural acessory, as bracelet, ring or eyelet, this checked poor reliability.

In fact, under latter event, because the existence of these metal objects, reading of metal detector can be wrong, so they are useless to differentiating existing of metal clip gripping member basically.

The US 1.707.989 of MOLYNEUX has described a kind of hobnail device of differentiating and removing shoe lining, and it is provided with Optical devices, makes the testing staff can with the naked eye check footwear inside.Specifically, the MOLYNEUX device provides light source and mirror, and both dispose like this so that be inserted into the inner testing staff of footwear can carry out the naked eyes detection to footwear inside with a kind of simple method.

Though the MOLYNEUX device is fit to any hobnailed existence that discriminating is made with plastics, proving effect is poor, because it relies on testing staff's technology to differentiate these hobnail, and it is also very complicated in structure and use.

At last, also disclose some identification devices at the mechanical grip part of shoe lining, it all is based on X-ray or other high-penetration ray detection footwear.Except to the discriminating of the mechanical grip part that is made of plastics or having under the situation of other metal-wares metal folder Effect on Detecting difference, these devices are also very expensive, and very complicated because of its operation, need skilled testing staff's use.

An object of the present invention is to provide the detection method and the device of a kind of footwear inside, in order to avoid shortcoming of the prior art as noted above is arranged.

Another object of the present invention provides the detection method and the device of a kind of footwear inside, its can be accurately and reliable detection by the easy mechanical grip part made of scratch material of metal or plastics or other, this mechanical grip part can be present in footwear inside, with and can also be optionally or differentiate the geometric shape of different parts in the footwear simultaneously.

A further object of the present invention provides the detection method and the device of a kind of footwear inside, and is uncomplicated on its structure, and uses easily.

Also purpose of the present invention provides the detection method and the device of a kind of footwear inside, and it is reliable and practical, and the testing staff needn't provide any sense of touch to detect.

Summary of the invention

These and other some purposes of the present invention are respectively by reaching according to the detection method of the footwear inside of first independent claims and dependent claims subsequently thereof with according to the checkout gear of the footwear inside of the 16 independent claims and dependent claims subsequently thereof.

According to the present invention, the detection method of footwear inside may further comprise the steps:

A is configured at least one inflatable body in the footwear;

B, the fluid by a kind of controlled amounts make the described inflatable body inflation in footwear lean against substantially at least a portion of footwear inwall until inflatable body or its part;

C, after the inflation, measure and/or assess the internal pressure of inflatable body and/or by the described part of footwear inwall to described inflatable body applied force or vice versa.

From following detailed description, be appreciated that, any abnormality in the footwear, erroneous arrangement or shape as the different parts of the existence of mechanical grip part or footwear are not right, can be by measuring the footwear internal pressure and/or differentiating, if possible by it value with desired pressure and/or power is compared by the footwear inwall applied force (vice versa) of inflatable body.

Should know, " inflatable body " in this article refers to a common obturator, except at least one fluid is gone into/is exported, at least one film (elasticity or stiff) is housed, when fluid (liquid or gas) pours into wherein, fluid occupies than film in its initial state or when not having deformation state during bigger volume, and this film can change its spatial distribution and/or can flexibly be out of shape.According to above definition, this inflatable body can comprise, for example, only therefore the wall of elastically deformable is similar to a rubber balloon, the wall that perhaps comprises inelastic deformation, as from folding state to extended configuration, vice versa, perhaps also comprises one or more walls that are out of shape that do not have fully, it is fixed on the film of at least one elasticity or inelastic deformation, or with any suitable combination of upper wall.

Term " fluid " not only refers to the material of those liquid or gaseous state in this article, also refers to the material that those have fluid behaviour, as is dispersed in foam-like or dusty material in the fluid bed.

According to a preferred aspect of the present invention, inflatable body to small part has the material of low tearing strength to make by a kind of, as nylon, polyvinyl chloride (PVC) or polyethylene, so that when inflation, this lacerable part contacts with one or more inwalls of footwear, the mechanical grip part that may exist or other easily scratch part can cause tearing of inflatable body, decompression suddenly within inflatable body.In this case, method of the present invention provides the integrality that can check inflatable body in the presence of holder or other easy scratch parts.

According to a further aspect in the invention, this method also provides the local pressure measxurement of carrying out, or by inflatable body or by the measurement of inflatable body applied force, so that differentiate the pressure that any discomfort that may exist is worked as or the gradient of power in inflatable body after inflation.These gradients, when they not within the scope of institute's desired value the time, it is right to represent to constitute footwear interior shape mutual align-err or positions unusual and each parts.

A preferred aspect of the method according to this invention, this inflatable body can advantageously comprise that some fluidities are separated and the interval that can inflate separately, and each all is equipped with at interval and detects that external environment condition applies or the inflatable body detector to external environment condition applied pressure or power.By this structure, inflatable body can closely match with the shape of the interior zone of footwear to be measured.

In a specific embodiment of method of the present invention, repeat repeatedly in each step that is applied in shoemaking of this method, this method was carried out before or after shoemaking is finished especially.This makes and can obtain very reliable detection to the easy scratch body of each parts in footwear or wrong how much states.

According to another aspect of the present invention, a kind of device of the present invention comprises at least one inflatable body and a kind of by the device of predetermined fluid with inflatable body inflation.This device also comprises described inflatable body in internal pressure after the inflation and/or after inflation, and external environment condition is to the testing agency of described inflatable body applied force, and vice versa.

In a preferred embodiment of device of the present invention, this device also comprises manually or is automatic to regulate the control device of aerating device.

Inflatable body is preferably removable or removable part is arranged, it has the material of low tearing strength to make by a kind of, as nylon, PVC or polyethylene, so that after the inflation, the inflatable body that contacts with the easy scratch part that may tear causes that measured pressure reduces suddenly.After inflatable body was repaired, it can restart to detect the inside of other footwear again.

Description of drawings

Below with reference to accompanying drawing and by infinite embodiment several embodiment of method and apparatus of the present invention are narrated, wherein:

Fig. 1 is the schematic representation of apparatus according to of the present invention one concrete aspect;

Fig. 2 is the partial cross-sectional perspective view of footwear, and employed inflatable body in the device of a Fig. 1 wherein is housed;

Fig. 3 is the part section and the local side view of section of footwear, and the inflatable body shown in the device of Fig. 1 wherein is housed;

Fig. 4 is the part sectioned view of footwear, wherein is equipped with one according to an inflatable body that concrete aspect constitutes of the present invention;

Fig. 5 is a preferred embodiment simplified block diagram of the method according to this invention;

Fig. 6 is another specific embodiment simplified block diagram of the method according to this invention; And

Fig. 7 is the concrete fluid circular chart that can implement in device according to the present invention.

The specific embodiment

Fig. 1-3 is depicted as the specific embodiment according to the checkout gear of footwear of the present invention inside.

In general, device shown in Figure 1 comprises an inflatable body 1,4, certain fluid is to the aerating device 2 of described inflatable body 1,4 inflations, and one with manually or automatic control by the device 11 (as flow rate of fluid and/or pressure and/or the flow of being carried) of the device 2 inflation parameters that drawn.

When using atmosphere as aerated fluid, device 2 can comprise simply that one has the pump of the induction part of leading to atmosphere, and when using different fluids, for example use just like the inert gas of helium, nitrogen or during as the liquid of water, device 2 but can comprise a suitable pump that is connected with the memory (not shown) of an inflatable fluid.

This device 2 can also selectively comprise foam (as, the polyurethane of foaming) preparation and conveying device or comprise the manual valve type nozzle of inflation simply.

Also comprise the testing agency 3 of the internal pressure of inflatable body 1,4 according to device of the present invention, as a common voltage-stablizer.In addition, for or with 3 combinations of described pressure detecting mechanism, shown device can comprise the suitable mechanism that is leaned against the inwall applied force of footwear 9 or 10 by inflatable body 1,4 of detecting, or vice versa, and footwear 9 or 10 inwall lean against the mechanism of inflatable body applied force when detecting the inflation of inflatable body.

Therefore, testing agency 3 can comprise voltage-stablizer, power sensor, Pressure gauge, loading sensing meter and weight sensor, and can be in one or more of inflatable body and/or outer wall configurations on inflatable body.

In the specific embodiment according to device of the present invention, when this device was used to detect any easy scratch body in footwear 9 or 10, these testing agencies 3 can comprise a flowmeter, and it places between described aerating device 2 and the inflatable body 1,4.

Therefore, this flowmeter can promptly detect any pressure drop that causes in inflatable body 1,4.As described below, Figure 7 shows that the concrete schematic diagram that a fluid circulates, wherein the use traffic meter detects in inflatable body 1,4 internal drops.

The concrete device of Fig. 1 also comprises mechanism 5, and as a kind of display, it can be that the testing staff shows the value by testing agency's 3 detected pressure and/or power, or show one with at least one relevant signal of presetting of power/force value to be measured.Therefore, for example, display 5 only can warn the testing staff to be lower than the threshold value lower limit when sending signal for the value that has detected, as limiting by device correction, represent that then unusual condition will appear in pressure and/or power, or after 1,4 inflations of inflatable body, can send the signal of value of the pressure/power of these detections immediately.

In one embodiment of back, mechanism 5 comprises the similar dial (not shown) of the indicator of an ordinarily manometer 3 simply.

The checkout gear of footwear inside shown in Figure 1 also comprises the treatment system 6 that data are provided by testing agency 3.Adopt this treatment system 6, the testing staff can programme at an easy rate, can (for example contrast with corresponding default desired value through the pressure of mechanism's 3 detections and/or the value of power, proofread and correct resulting value in advance through device, and be stored in the system 6), maybe can regulate the inflations of inflatable body 1,4 automatically by control device 11, or also can determine should with based on the information conveyance of the value of pressure that detects by mechanism 3 and/or power to display 5.

This makes people can make this device be applicable to the different trace routines of footwear inside, and customizable testing staff can obtain data by display 5.

In the specific embodiment shown in Fig. 1-3, the used inflatable body of above-mentioned device is a kind of simple inflation part that comprises, it is made up of a deformation film 1 that is fixed on the harder supporting structure 4, and an aeration jet 12 and a voltage-stablizer 3 are arranged in the film 1.

By can seeing among Fig. 1, voltage-stablizer 3 through cable 7 in operation be connected at display 5 (shown in Figure 1) and/or data handling system 6 (not shown), and nozzle 12 is connected with aerating device 2 on fluid through conduit 8.

Make by any elastomeric material as latex, nylon, EPR or the shape 1 one-tenth of the deformation film made as polyethylene of non-elastic material basically, so that when inflation, its at least one part with the inwall of footwear 9 or 10 contacted, and take this to be subjected to the power (even being simple positive action) that applies by described inner wall section.

From Fig. 2 and 3, can see, the such shape of film 1 preferable one-tenth so that its it is placed footwear 9 or 10 and aptly the inflation after, it can lean against on the whole lower wall of footwear inwall at least, for example on shoe-pad sheet or the arch of foot supporter.

Film 1 can be made by any elasticity or inelastic deformation material, and as latex, nylon, polyethylene, polyvinyl chloride (PVC), polyurethane, EPR (ethylene-propylene rubber), synthetic and natural rubber, they can be complementary with the shape of footwear to be measured inside.

When film 1 was made by the elastic deformation material, the result was that its shape and footwear 9 or 10 inner adaptability are good.

On the contrary, if film 1 is made by non-elastic material basically, then inflatable body 1 had a required concrete shape, promptly, it should have footwear 9 or 10 inside this kind shape, so that by the value of described testing agency 3 acquisition pressure and/or power, and these values are more relevant with how much states of footwear 9 or 10 inside, and are therefore relevant with its " instep ".

In addition, according to a preferred aspect of the present invention, constitute the material of the optional own low tearing strength of material of deformation film 1, so that when film 1 and a when easily the scratch element contacts, the tip of an interim folder for example, as nail, hobnail or bipod pin, this material is torn, and takes this to cause the unexpected pressure drop in the inflatable body 1,4.As follows, this is the basic demand of enforcement according to the concrete operations mode of the detection method of footwear 9 of the present invention or 10 inside.

As prior art as can be known, through the thickness and the material of careful selective membrane 1, can obtain the film 1 of this low tearing strength.

1 one-tenth such shape of the film of inflatable body 1,4 so that tear in check or change when being suitable for another footwear to be measured 9,10 when the shape need of inflatable body 1,4, can be changed at an easy rate.In addition, shown device can comprise and is suitable for the various different device (not shown) that require to be convenient for changing whole inflatable body that detect that may occur when using this device.

As above mention, when device of the present invention is used to detect any easy scratch article of footwear 9 or 10 inside, can use as shown in Figure 7 a circular chart, and be used in combination a kind of film 1 easily tear material so that differentiate any breaking of inflatable body 1,4.

In the specific embodiment as shown in Figure 7, testing agency 3 can comprise a memory 222 and a flowmeter 203, and this table is placed on the downstream of aerating device 2, and this aerating device 2 can comprise an air compressor 202 and a magnetic valve (that is an electricity operation valve) 220 successively.

In more detail, in Fig. 7, the aerated flow of inflation body 1 go into route since T junction and in the downstream of magnetic valve 220 bifurcated immediately, so that make air from air compressor 202, escape to described inflatable body 1, and be between memory 222 and the inflatable body 1,4 to memory 222 and described flowmeter 203.Magnetic valve 220 can separate and comprise memory 222, the circulating path of flowmeter 203 and inflatable body 1,4.

In the operation of the device that circulates among enforcement Fig. 7, with in the inflatable body 1 and the pressure memory 222 in preset be higher than atmospheric pressure after, for example, by controlling the air capacity of being supplied with by compressor 202, then turn off magnetic valve 220, thereby play the effect that separates the fluid system that comprises inflatable body 1, memory 222 and flowmeter 203, so that can detect any pressure drop of inflatable body 1 immediately.

In fact, inflatable body 1 is torn the pressure drop that will cause in the described inflatable body 1 for a short time inflated condition, therefore this makes air flow to inflatable body 1 (tear and be under the atmospheric pressure) from memory 222 (with the pressure higher than ambient pressure) suddenly, this air stream can be detected by flowmeter and testing staff immediately.

On the other hand, after one suitable period, when flowmeter 203 does not detect whatever, the testing staff can make inflatable body 1 venting, and carries out the detection of another footwear.

Figure 4 shows that an

inflatable body

101a, 101b, 101c, 104 optionally embodiment, it is fit to insert in the footwear 10 of Fig. 3.

The inflatable body of Fig. 4 comprises a plurality of

deformable interval

101a, 101b, 101c, these are kept by same hard supporter 104 at interval, they separate on fluid, each all is equipped with an aeration jet at interval, it is connected with a branch of corresponding conduit 108, and this conduit leads to the aerating device (not shown).

101a, 101b, 101c also are equipped with oneself power sensor 103a, 103b, 103c at interval for each, be placed between the inwall of footwear 10 at

interval

101a, 101b, 101c inflation back power sensor, 101a, 101b, 101c lean against on the sensor at interval, and its function is detection corresponding 101a, 101b at interval, 101c imposes on the power (pressure) of footwear 10 inwalls or vice versa.

Sensor 103a, 103b, 103c are preferably loading sensing meter or weight sensor.

Then, will be delivered to a display or data handling system (not shown) from the signal that sensor 103a, 103b, 103c come by cable 107.

As following will understand better, detect the power (pressure) of the Nei Tuobi (or more walls) that inflatable body imposes on footwear 10 by the part, can make comparisons by the expected value that this detection and test is default, whether assessment footwear holder walls (or on inwall to be measured) exist local abnormity.

Should see, although narrated an embodiment, wherein to detect the interval of separating on fluid with inflatable body relevant in the part that is applied to the power (or vice versa) of at least one footwear inwall by inflatable body, but this local detection can simply be placed several sensors by the contact-making surface between inflatable body and described at least one footwear inwall and be reached, and need not any inner separation of inflatable body.

Inflatable body is separated into divided portion on the fluid, but its major function be with the blowing pressure of a simple mode by changing single interval with the shape that cooperates inflatable body in the footwear and under the situation of how much variablees of sensing of footwear inwall to be measured, more accurately detect the power (or vice versa) that is applied to the footwear inwall by inflatable body.

Because this situation, the internal pressure (as in the embodiment of Fig. 1-3) of utilizing sensor to detect in the inflatable body of being made up of the interval that separates on a plurality of fluids (as the embodiment of Fig. 4) is not only expected within the scope of the present invention, but also high matching is arranged and special advantage is arranged because of inflatable body and shoe-shaped shape.

Refer again to Fig. 5 and 6, will be described in down according to several operator schemes of the detection method of footwear of the present invention inside, these patterns such as can be on above any device embodiment.

Usually, the detection method according to footwear of the present invention inside may further comprise the steps:

A) at footwear 9; Place inflatable body 1,4 in 10; 101a, 101b, 101c, 104;

B) described inflatable body 1,4; The fluid of 101a, 101b, 101c, 104 usefulness controlled amounts such as air, helium or nitrogen inflation are up to inflatable body 1,4; 101a, 101b, 101c, at least a portion of 104 lean against at least a portion inwall of footwear 9,10 to be measured;

C) after the inflation, measure or assess inflatable body 1,4; 101a, 101b, 101c, 104 internal pressure, or impose on the power of inflatable body or vice versa by the described part of footwear 9,10 inwalls to be measured.

By measuring or assess inflatable body 1,4; 101a, 101b, 101c, 104 internal pressure, or at least a portion of described footwear to be measured 9,10 inwalls imposes on the power of inflatable body or vice versa, can carry out the difference assessment of the internal state of footwear 9,10.

In fact, the one group of pressure that detects like this and/or the value of power are acceptable, this class value is at before device correction or be provided with in the step and limit, unusually can be at an easy rate simply contrasting and obtain by with one group the measured acceptable value of given footwear 9,10 and this being organized acceptable value on any geometry of footwear 9,10 inside.

Therefore, for example, the shoe-pad sheet is in the position of a mistake, perhaps reinforcement is with respect to the configuration error of vamp, or undesirable folding line or folding appears on the arch of foot supporter, other shortcomings that maybe may be present in footwear 9,10 inside, can be at an easy rate by analyzing the signal relevant or apply or impose on the relevant signal of power of inflatable body by footwear 9,10 walls to be measured or its part to be measured by inflatable body with internal pressure, and itself and one group of acceptable value of presetting are contrasted and detect.

When method main purpose of the present invention is to differentiate these shortcomings that how much states of footwear 9,10 inside may exist, and when therefore assessing the latter's " instep ", locally detect promptly inflatable body 1,4; 101a, 101b, 101c, 104 internal pressure and/or by leaning against the several different positions (referring to the device of the description relevant) that applies/impose on the power on it along the inflatable body 1,4 of footwear 9,10 inwalls with Fig. 4, not only can differentiate any unusual existence, but also can differentiate its position in footwear 9,10 inside.

In addition, when inflatable body 1,4; 101a, 101b, 101c, 104 are made by non-elastic material basically to small part, and footwear inside be should have a theoretical shape time, described inflatable body 1,4; 101a, 101b, 101c, 104 inflation in footwear 9,10 and the part detection of described pressure and/or power value make and can differentiate any unusual of footwear immediately with the height accurate way.

This inner detection method main purpose is to analyze internal geometry, that is, " instep " of footwear is widely used in the field that the model of trial production footwear is done to detect, and its purpose is to differentiate in the design of footwear and/or any shortcoming in the manufacturing.In this field, any structural change and/or the design improvement that can cause supporting each part of shoe tree or footwear unusually that detects footwear inside, so that improve whole footwear, particularly its " instep " (i.e. " size ").

Under situation already pointed out, inflatable body 1,4; 101a, 101b, 101c, 104 making material to small part select to have low tearing strength, easy scratch element such as nail, bipod pin or hobnail are arranged, and make inflatable body 1,4 on the incomplete footwear inwall of sewing; 101a, 101b, 101c, 104 inflations can cause that this easy scratch element contacts with the material of easily tearing, and makes inflatable body 1,4 afterwards; 101a, 101b, 101c, 104 break.This breaking can cause inflatable body 1,4; Pressure in 101a, 101b, the 101c, 104 descends suddenly, for example, can pass through above-described testing agency 3; 103a, 103b, 103c, or the visual examination by the testing staff detects more simply.

Therefore, if method of inspection main purpose according to the present invention is to detect the easy scratch element that may exist in footwear 9,10, then as mentioned above, the concrete aspect of method of the present invention can be by the simple visual examination of inflatable body, that is, the visual assessment of inflatable body integrality is differentiated these easily existence of scratch element.

In addition, in order to make the detection automation of this easy scratch element in the footwear 9,10, can place a testing agency 3, for example it comprises flowmeter 203 and memory 222 among Fig. 7, the aerating device 2 in downstream and the inflatable body of upstream 1,4, so as can fast detecting any pressure drop in the inflatable body 1,4.

According to a preferred aspect (not shown) of the present invention, inflatable body 1,4; 101a, 101b, 101c, 104 can have one with shoe-pad backing layer and/or the contacted bottom of shoe-pad sheet, and make by elastomeric material such as latex, the tearing strength that resembles this thickness is lower, an and top that engages with the side inwall of vamp, and by making such as poly non-elastic material, it has than high-tear strength, and the shape of best and footwear inside is basic identical.Therefore, as frequent generation, be present in shoe-pad or shoe-pad backing layer if easily abrade part such as hobnail, inflatable body is after inflation or when inflation, to tear because of its underpart, and when easily not abrading part, inflatable body is filling footwear inside suitably, and because power and/or pressure sensor, can be according to above-mentioned method assessment " instep ".

Figure 5 shows that a specific embodiment of method of the present invention, be particularly suitable for detecting may be in footwear 9,10 any easy scratch part.As an example this specific embodiment of method of the present invention is explained below with reference to the device among Fig. 1-3 and Fig. 7.

The first step of the method for Fig. 5 (a): inflatable body 1,4 is placed in the footwear 9,10, in (a) step, can makes inflatable body 1,4 distortion, as folding, therefore the inwall to footwear 9,10 can not apply any active force.

Step afterwards (b): the mode with a kind of control makes inflatable body 1,4 inflations, breaks for fear of inflatable body is accidental, preferably controls the pump 2 (or compressor 202 of Fig. 7) that is subject to processing system's 6 controls again with control device 11 and inflates.The purpose of this aeration step (b) is inflatable body 1,4 distortion that make at least a portion, so that at least a portion of described inflatable body 1,4 (it comprises film 1 under the situation of Fig. 1-3) contacts with at least one inwall or its part of footwear 9 or 10.

When the fluid circulation time that uses Fig. 7, control device 11 can make air compressor 202 that the air pressure of inflatable body 1,4 inflations in inflatable body 1 and memory 222 is higher than atmospheric pressure in default mode.

The shape of preferred film 1 like this so that reach subsequently aeration step (b), it is near the whole bottom of footwear 9 or 10 inside, for example on the whole shoe-pad or on the arch of foot supporter, or even also abut against footwear 9 or 10 other or all on the inwall.

The aeration step (b) of inflatable body 1,4 is a measurement or the step of assessing inflatable body 1,4 internal pressures afterwards.

If carry out the circulation of Fig. 7 already, after aeration step (b), control device 11 is turned off magnetic valve 220, so that separate the circulation that comprises memory 222 and inflatable body 1.

Have under the situation of low tearing strength in elasticity or inelastic deformation film 1, promptly, less thickness is arranged, and make by the material such as nylon, PVC, EPR or the polyethylene that are fit to, this film 1 that contacts with the easy scratch element that may be present in footwear 9 or 10 inside, usually can cause film rupture, pressure drop suddenly in inflatable body 1,4 then.

Then, breaking of this pressure drop and inflatable body 1,4 can be differentiated by testing staff's naked eyes, or in the device of Fig. 1-3, by as operation go up a voltage-stablizer 3 that is connected with display 5, can measure and show to the testing staff.

When one or more voltage-stablizer 3 is housed, can be in the possible defective of footwear 9 to be measured or 10 inside by differentiating for given footwear 9 or 10 measured inflatable body 1,4 internal pressure values and one group of acceptable value contrast of in default test, having set up in advance.This contrast can be carried out automatically by aforesaid treatment system 6.

On the contrary, if be used for implementing the specifically fluid circulation of device employing Fig. 7 of detection method of Fig. 5, the breaking of the film 1 of inflatable body can cause that being higher than 1 atmospheric air-flow flows to the inflatable body that breaks under 1 atmospheric pressure from memory 222 suddenly, because the pressure difference that is produced, so flowmeter 203 can be measured this air-flow.The testing staff can read the measured numerical value of flowmeter 203 immediately, if or flowmeter 203 outputs one analog or digital signal, then be transported to a display 5 that is fit to.

The internal pressure (step of the method among Fig. 5 (e)) of measuring and/or assess inflatable body 1,4 afterwards, if measured pressure and acceptable value are complementary, this concrete grammar can be used for next footwear (step (g)), if or the film 1 of inflatable body 1,4 breaks or the force value that records and desired acceptable value do not match, and then can carry out next step detection or the repairing (step (f)) of footwear 9 to be measured or 10.

Should be appreciated that described herein fluid circulation is simply doubled, can advantageously detect the shortcoming or the easy scar spare of two footwear simultaneously.

As shown in Figure 6, the concrete operations pattern of the method according to this invention is particularly suitable for checking footwear inside, and its main purpose is to differentiate any geometric imperfections of part in the footwear, and therefore assesses its " instep ".Indication will be the device described in relevant Fig. 4, it is only as an example.Similar to the method described in Fig. 5, method described in Fig. 6 provides first 2 steps (a ') and (b '), it is respectively

inflatable body

101a, 101b, 101c, 104 is placed in the footwear 10, and makes described

inflatable body

101a, 101b, 101c, 104 inflations.

When inflatable body is divided into the interval 101a, the 101b that separate on the fluid, 101c, the aeration step of inflatable body (b ') can be under the state that changes (as under different pressure), each

interval

101a, 101b, 101c are inflated, so that

inflatable body

101a, 101b, 101c are matched with the shape of footwear 10 inside in the suitableeest mode.

Because the detection method of Fig. 6 is not to be in particular to detect the easy scratch element that may exist in the footwear 10,

inflatable body

101a, 101b, 101c, 104 or preferably its deformation film can not have low tearing strength, yet, although preferable have this specific character, but, still can be used for differentiating that in a kind of useful mode these easily abrade existing of element because it influences the detection of the geometric imperfections in the footwear 10 hardly.

In order to detect the defectives that may exist in the footwear 10, the step after the described method among Fig. 6 (c ') provides when the inflatable body 101a in inflation back, 101b, 101c, 104 impose on the power that footwear 10 inwalls contact on the wall can carry out local measurement by some suitable sensor 103a, 103b, 103c.

As mentioned above,, not only can detect each inner geometry any unusual of footwear 10, can also differentiate unusual residing positions in the footwear 10 at an easy rate by this power of local measurement.

With the local value of the inflatable body 101a that surveyed, power that 101b, 101c, 104 apply and corresponding acceptable desired value contrast (step (d ')), in aligning step, limits before, can find at an easy rate whether to exist in the footwear 10 unusually.

These unusually not only may be because the mistake in manufacture process; and may be because the mistake in footwear 10 designs; can differentiate with a kind of accurate way afterwards; and it is as possible; these can revise (step (f ')); to avoid footwear 10 to bring uncomfortable (that is unusual or defective) to avoid to take place at " instep " to the end user.

If do not detect unusually, the method for Fig. 6 provides and can adopt Same Way (step (g ')) detect another footwear 10.

According to a preferred aspect of the present invention; in the test process several times that the inventor had carried out already; have found that; the detection method of this paper footwear required for protection inside after changing sole, also is; when from the footwear that almost finishes, removing it and making when finishing a little; also promptly, before the packing and distribution of footwear, it is effective especially doing to detect.

More particularly, have found that before footwear are finished, afterwards, easy scratch element and/or the geometric imperfections of using above-mentioned method to differentiate that footwear inside may exist are effective especially.

Claims

1. the detection method of a footwear inside is characterized in that, described method may further comprise the steps:

A is placed at least one inflatable body in the footwear;

B, the fluid by a controlled amounts make described at least one the inflatable body inflation in footwear lean against substantially at least a portion of footwear inwall until described at least one inflatable body or its part;

C, after the inflation, measure and/or assess the internal pressure of inflatable body and/or by described at least a portion of footwear inwall to described at least one inflatable body applied force or vice versa.

2. the method for claim 1, it is characterized in that described method comprises a subsequent step: with the internal pressure of described at least one inflatable body and/or at least one inflatable body applied force or by described at least one inflatable body applied force and inflation desired pressure in back and/or power contrast.

3. the method for claim 1, it is characterized in that, described measurement or assess described at least one inflatable body internal pressure and/or to or comprise the inspection step of described at least one inflatable body integrality by the step of described at least one inflatable body applied force.

4. as the described method of above arbitrary claim, it is characterized in that, described measurement or assess described at least one inflatable body internal pressure and/or to or the pressure at least one inflatable body is provided and/or the part that the institute part of described at least one inflatable body applies power (or vice versa) is detected by the step of described at least one inflatable body applied force by the part of described inwall at least.

5. as the described method of above arbitrary claim, it is characterized in that, described at least one inflatable body is divided into the interval of separating on two or more fluids, and to described two or more each at interval carry out described measurement or assess described at least one inflatable body internal pressure and/or to or by the step of at least one inflatable body applied force.

6. as the described method of above arbitrary claim, it is characterized in that described at least one inflatable body to small part is made by the material of low tearing strength.

7. method as claimed in claim 6 is characterized in that, described material is selected from: latex, a kind of polyamide (nylon), polyethylene, polyvinyl chloride (PVC), polyurethane, EPR (ethylene-propylene rubber), synthetic and natural rubber, silicones.

8. as the described method of above arbitrary claim, it is characterized in that the aerated fluid of described at least one inflatable body is selected from: air, helium, nitrogen, water, polyurathamc foam.

9. as the described method of above arbitrary claim, it is characterized in that described at least one inflatable body abuts against on the whole prolongation of the shoe-pad sheet of footwear or arch of foot supporter basically when inflation.

10. as the described method of above arbitrary claim, it is characterized in that described at least one inflatable body abuts against on the whole inner surface of described footwear basically when inflation.

11., it is characterized in that described method is used as the described method of above arbitrary claim after last sole and before then making finished product in the shoemaking process.

12., it is characterized in that described method is used when finishing operation finishes as the described method of above arbitrary claim in the shoemaking process.

13., it is characterized in that described method finishes instant the application with finishing operation as claim 11 and 12 described methods in the shoemaking process after last sole.

14., it is characterized in that described method is used at the model of the design procedure of footwear and/or support shoe last or hat block or the footwear of trial production as claim 11 and 12 described methods.

15. as claim 11 and 12 described methods, it is characterized in that, during described inflatable body inflation, have one basically with described footwear internal theory to be measured on the corresponding shape of due shape.

16. the checkout gear of a footwear inside is characterized in that, described device comprises at least one inflatable body; One aerating device, it makes described at least one inflatable body inflation by the fluid of setting up in advance; And testing agency, its directly or indirectly detect described at least one inflatable body after inflation internal pressure and/or by external environment condition applied force or vice versa during to described at least one inflatable body inflation.

17. device as claimed in claim 16 is characterized in that, described aerating device is controlled by manual or automatic control device.

18. as claim 16 or 17 described devices, it is characterized in that, the internal pressure of described at least one the inflatable body of described detection and/or to or be connected with indication mechanism in operation by the testing agency of described at least one inflatable body applied force, described indication mechanism for the testing staff shows described pressure and/or power or with the relevant signal of value of at least one described pressure or power.

19. as claim 16,17 or 18 described devices, it is characterized in that, described device comprises a data handling system, its on function with the testing agency of described aerating device and/or described pressure and/or power, and/or the indication mechanism of described pressure and/or power or a signal relevant with the value of at least one described pressure and/or power connects.

20. the described device of arbitrary claim as claim 16 to 19 is characterized in that described at least one inflatable body or its part can freely be changed.

21. the described device of arbitrary claim as claim 16 to 20 is characterized in that, described at least one inflatable body comprises rigid support part and at least one inflatable elastic membrane.

22. the described device of arbitrary claim as claim 16 to 21 is characterized in that, described at least one inflatable body is divided into the interval of separating on the fluid.

23. the described device of arbitrary claim as claim 16 to 22, it is characterized in that described at least one inflatable body comprises at least one film, its at least a portion with an inwall of described footwear contacts, the shape of described film like this so that its tearing strength is lower.

24. the described device of arbitrary claim as claim 16 to 23 is characterized in that, described at least one inflatable body has at least a part to be made by elastomeric material.

25. the described device of arbitrary claim as claim 16 to 24, it is characterized in that, described at least one inflatable body has at least one film, and the constituent material of described film is selected from: latex, a kind of polyamide (nylon), polyethylene, polyvinyl chloride (PVC), polyurethane, EPR (ethylene-propylene rubber), synthetic or natural rubber, silicones.

26. the described device of arbitrary claim as claim 16 to 25, it is characterized in that described inflatable body has at least one film down, so consequently its tearing strength is lower for its shape, and at least one side form and/or last film, its tearing strength is greater than the described tearing strength of film down.

27. the described device of arbitrary claim as claim 16 to 26, it is characterized in that, the described at least one inflatable body of described detection after inflation the internal pressure and/or the testing agency of the power that applies during to described at least one inflatable body inflation of external environment condition or vice versa is selected from: voltage-stablizer, power sensor, Pressure gauge, loading sensing meter, weight sensor.

28. the described device of arbitrary claim as claim 16 to 26, it is characterized in that the testing agency of described pressure that detects described at least one inflatable body directly or indirectly and/or the power that described at least one inflatable body applied by external environment condition comprises at least one flowmeter that places between described aerating device and the described at least one inflatable body.

29. device as claimed in claim 28, it is characterized in that, the detection method of the pressure of the described at least one inflatable body of described direct or indirect detection and/or the power that described at least one inflatable body applied by external environment condition also comprises at least one memory, and it is connected with described at least one inflatable body on fluid; Described at least one flowmeter places between described memory and the described at least one inflatable body; Described fluidic circuit comprises described at least one memory, described at least one inflatable body and described flowmeter, and it can be with respect to described aerating device separately.

30. the described device of arbitrary claim as claim 16 to 29 is characterized in that, a kind of shape when described inflatable body is inflated is basically corresponding to due shape on the described footwear internal theory to be measured.