CN115308046B - Surface whitening color measurement detection device and method for plastic product stress detection - Google Patents
Surface whitening color measurement detection device and method for plastic product stress detection Download PDFInfo
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- CN115308046B CN115308046B CN202211235929.3A CN202211235929A CN115308046B CN 115308046 B CN115308046 B CN 115308046B CN 202211235929 A CN202211235929 A CN 202211235929A CN 115308046 B CN115308046 B CN 115308046B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
Abstract
The invention relates to the field of plastic product detection, in particular to a surface whitening color measurement detection device for plastic product stress detection, which is arranged on a detection table and comprises a handle part supporting die, a spoon part supporting die, a detection camera, a color measurement instrument and a simulation bending mechanism, wherein the simulation bending mechanism comprises a spoon part pressing component, a handle part pressing component, a spoon part fixing component and a handle part bending component, and the detection table is provided with a first detection mechanism and a second detection mechanism. The invention also relates to a surface whitening color measurement detection method for stress detection of plastic products.
Description
Technical Field
The invention relates to the field of plastic product detection, in particular to a surface whitening color measurement detection device for plastic product stress detection and a surface whitening color measurement detection method for plastic product stress detection.
Background
The method has the defects that in order to obtain a certain impact effect, the steel ball generally has a large diameter and large energy and can damage common plastic products, the whitening process of the surface of the plastic products under the action of smaller stress under the actual condition cannot be simulated, the damage degree of the plastic products in the actual manufacturing, assembling or using process cannot reach the damage degree of the falling ball impact, only the appearance of the products is influenced, the whitening flaw occurs, the measured energy absorption value cannot represent the whitening degree of the plastic products, a larger-area damage area is formed on the surface of the products, the surface effect of the plastic materials cannot be compared, the thickness of the plastic products is different, different structures such as curved surfaces, bending and thin walls exist, the common diameter of the plastic products cannot be represented, the damage degree of the plastic products cannot be easily determined, and the characteristics of the surface of the steel ball cannot be accurately determined.
The presently disclosed chinese patent CN201210582190.3 is a simulation apparatus and a detection method for plastic product surface stress whitening, comprising: base, supporting mechanism, elevating system, beater mechanism and retaining mechanism, supporting mechanism installs on the base for support elevating system, beater mechanism and retaining mechanism, elevating system sets up on supporting mechanism for promote beater mechanism, retaining mechanism can make beater mechanism release beater mechanism make its free fall striking plastic products after stopping certain high department, beater mechanism is including the weight piece that connects gradually, connection spline pole and spherical impact head, the external diameter of weight piece is greater than the external diameter of connecting spline pole and spherical impact head.
According to the above patent, the stress of the plastic product is detected in a free impact manner, so as to observe the whitening degree of the plastic product, however, for example, the detection of the plastic spoon is easy to damage the plastic spoon, so that the situation of daily use cannot be simulated, and the detection effect is not good, so that a device capable of detecting the stress by simulating the situation of daily use of the plastic spoon is required at present.
Disclosure of Invention
The stress intensity of the plastic spoon is judged by simulating two simulation processes of a bending mechanism on the plastic spoon, observing the plastic spoon in the bending process by a detection camera and a color measuring instrument and observing the whitening degree and the fracture phenomenon at the joint of the spoon part and the handle part of the plastic spoon, so that the plastic spoon is prevented from being seriously damaged, and the stress intensity of the plastic spoon is more effectively detected.
In order to solve the problems of the prior art, the invention adopts the technical scheme that:
the invention provides a surface whitening color measurement detection device for stress detection of plastic products, which is arranged on a detection table and comprises a handle part supporting die, a spoon part supporting die, a detection camera, a color meter and a simulated bending mechanism for applying stress pressure to a plastic spoon; a gap is reserved between the handle part supporting mold and the spoon part supporting mold, the spoon part supporting mold can vertically move on the detection platform, and the handle part supporting mold can move towards the position right above the spoon part supporting mold; the detection camera is positioned right above the position between the handle part supporting mold and the spoon part supporting mold; the color measuring instrument is positioned right below the position between the handle part supporting die and the spoon part supporting die; the simulated bending mechanism comprises a spoon part pressing component, a handle part pressing component, a spoon part fixing component and a handle part bending component; the spoon part pressing component is arranged right above the spoon part supporting die; the handle pressing component is arranged right above the handle supporting die; the spoon part fixing assembly is arranged at the side of the spoon part supporting die; the handle bending-up component is connected with the handle supporting die; the detection table is provided with a first detection mechanism which is connected with the spoon part supporting mold in a matched mode and a second detection mechanism which is connected with the handle part supporting mold in a matched mode.
Preferably, the spoon part pressing component comprises a movable piece and a first pressing cylinder; the moving piece is arranged between the spoon part supporting die and the detection platform; the first downward-pressing cylinder is arranged right above the spoon supporting die.
Preferably, the movable member comprises a movable plate; the fly leaf has two, and two fly leaves symmetry and fixed setting all are equipped with two guide bars towards the direction of examining the test table in the bottom both sides of spoon portion support mould, every fly leaf, examine and set up the direction mouth that supplies every guide bar to penetrate on the test table, all overlap on every guide bar and be equipped with a first buffer spring to every first buffer spring's both ends are fixed with the fly leaf that corresponds respectively and examine the test table fixedly.
Preferably, the output shaft of the first lower air cylinder is sleeved with a shaft sleeve, a second buffer spring is connected between the inside of the shaft sleeve and the output shaft of the first lower air cylinder, and the lower end of the shaft sleeve is further sleeved with a rubber sleeve.
Preferably, the shank pressing assembly comprises a shank pressing die and a second pressing cylinder; the handle pressing die is arranged right above the handle supporting die, and the lower surface of the handle pressing die is provided with a rubber strip; the second pushes down the cylinder setting and pushes down the mould directly over the stalk portion, and stalk portion pushes down the mould and pushes down the output shaft fixed connection of cylinder with the second.
Preferably, the spoon fixing assembly comprises a movable side plate and a fixed side plate; the two movable side plates are symmetrically arranged on two sides of the spoon supporting mold, and both the two movable side plates can move towards the spoon supporting mold; fixed sideboard has two, two fixed sideboard are all fixed on examining test table, two fixed sideboard are located one removal sideboard respectively and keep away from one side that spoon portion supported the mould, the orientation that corresponds fixed sideboard on every removal sideboard all extends two inserted bars, all set up the socket that supplies to correspond the inserted bar and pass on every fixed sideboard, all overlap on every inserted bar and be equipped with a compression spring, and every first compression spring's both ends are fixed with the removal sideboard that corresponds respectively and fixed sideboard with the correspondence, all be equipped with a unipolar cylinder on every fixed sideboard, every unipolar cylinder's output shaft all moves towards the removal sideboard that corresponds.
Preferably, the spoon fixing assembly further comprises a pressure plate and a triangular block; the pressure plate is arranged between the spoon part supporting die and the detection table, a pressure rod is arranged on the pressure plate in the direction towards the detection table, a through hole for the pressure rod to penetrate is formed in the detection table, a second compression spring is sleeved on the pressure rod, and two ends of the second compression spring are respectively fixed with the pressure plate and the detection table; the triangular block is fixedly arranged at the bottom of the spoon supporting mould in an inverted triangle manner, the triangular end of the triangular block is pressed against the surface of the pressing plate, and the two movable side plates are both in a folded plate shape attached to the surface of the triangular block.
Preferably, the handle bending-up assembly comprises a limiting plate and an electric push rod; the two limiting plates are symmetrically arranged on two sides of the handle supporting die, and a channel for the handle supporting die to move is reserved between the two limiting plates; the electric push rod is fixed on the detection table in an inclined mode, the handle part supporting die is fixedly connected with an output shaft of the electric push rod, and the output shaft of the electric push rod faces to the position right above the spoon part supporting die; the both sides that the stalk portion supported the mould all rotate and are equipped with an gyro wheel, all offer on every limiting plate and supply to correspond the rolling bar mouth of gyro wheel, the length direction of bar mouth is on a parallel with electric putter's axis direction to the end of bar mouth is located the spoon portion of plastics spoon and the stalk portion junction directly over.
Preferably, the first detection mechanism comprises a sleeve, a pressure sensor and a third compression spring, the sleeve and the pressure rod are coaxial and fixed on the detection table, the sleeve is positioned below the pressure plate, the pressure rod is inserted into the sleeve, the diameter of the pressure rod is equal to the inner diameter of the sleeve, the pressure sensor is fixedly arranged at the lower end of the sleeve, the output end of the pressure sensor is positioned in the sleeve in a mode that the output end faces upwards, the third compression spring is arranged in the sleeve, and the third compression spring is positioned between the pressure sensor and the pressure rod; the second detection mechanism comprises a tension sensor which is of a tension spring structure, and two ends of the tension sensor are fixed with the handle supporting die and the detection table respectively.
The invention also provides a surface whitening color measurement detection method for stress detection of plastic products, which comprises the following steps:
s1, placing a plastic spoon on a spoon part supporting mould and a handle part supporting mould;
s2, firstly, the handle part of the plastic spoon is pressed on a handle part supporting die through a handle part pressing assembly, and then the spoon part of the plastic spoon is pressed downwards through a spoon part pressing assembly;
s3, observing the whitening degree of the joint between the spoon part and the handle part when the spoon part of the plastic spoon bends downwards relative to the handle part through a color measuring instrument, observing whether the plastic spoon is broken through a detection camera, and detecting the compression degree of the spoon part of the plastic spoon when the spoon part bends downwards through a first detection mechanism;
s4, fixing the spoon supporting mold through the spoon fixing component, pressing the spoon part of the plastic spoon through the spoon part pressing component, and pushing the handle supporting mold upwards through the handle bending component, so that the handle of the plastic spoon is driven to bend towards the spoon part;
s5, when the handle part of the plastic spoon bends upwards relative to the spoon part, the whitening degree of the joint between the spoon part and the handle part is observed through the color measuring instrument, whether the plastic spoon is broken or not is observed through the detection camera, and the stress degree of the handle part of the plastic spoon when the handle part bends upwards is known through the second detection mechanism.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the stress detection device, two simulation processes of the plastic spoon by the simulation bending mechanism and observation of the plastic spoon in the bending process by the detection camera and the color measuring instrument are adopted, the stress intensity of the plastic spoon is judged by observing the whitening degree and the fracture phenomenon at the joint of the spoon part and the handle part of the plastic spoon, so that accurate stress detection of the plastic spoon is realized, compared with the mode of impact detection in the prior art, the severe damage to the plastic spoon is avoided, and the stress intensity of the plastic spoon is more effectively detected.
2. According to the invention, the spoon part of the plastic spoon is pressed downwards through the first downward pressing cylinder, and the movable part is connected with the spoon part supporting die, so that the spoon part of the plastic spoon can be supported without being hindered from bending, the spoon part of the plastic spoon is subjected to pressure simulation, the quality of the plastic spoon when the spoon part is bent relative to the handle part is detected, and the detection precision is improved.
3. According to the invention, the spoon supporting die is clamped by the two movable side plates, so that the fixing of the spoon supporting die is completed, the bending detection of the handle part relative to the spoon part is facilitated, the bending simulation of the handle part of the plastic spoon is realized, the quality of the handle part of the plastic spoon when the handle part is bent relative to the spoon part is detected, and the detection precision is improved.
4. According to the plastic spoon, the compression degree of the spoon part and the handle part of the plastic spoon in the detection process is judged through the arrangement of the first detection mechanism and the second detection mechanism, so that the stress degree of the plastic spoon is judged, and the detection precision is improved.
Drawings
FIG. 1 is a first schematic view of a surface whitening color measurement device for stress detection of plastic products;
FIG. 2 is a schematic perspective view of a surface whitening color measurement device for stress measurement of plastic products;
FIG. 3 is a left side view of a device for measuring surface whitening color for stress detection of plastic products;
FIG. 4 isbase:Sub>A cross-sectional view taken at A-A of FIG. 3;
FIG. 5 isbase:Sub>A cross-sectional view of the three-dimensional structure of FIG. 3 at A-A;
FIG. 6 is a schematic view of a first partial three-dimensional structure of a surface whitening color measurement device for stress detection of plastic products;
FIG. 7 is a schematic view of a partial three-dimensional structure of a surface whitening color measurement device for stress measurement of plastic products;
FIG. 8 is an enlarged schematic view at B of FIG. 4;
FIG. 9 is a schematic perspective view of a movable member and a spoon fixing member of a surface whitening color measurement device for stress measurement of plastic products;
FIG. 10 is a top view of the movable member and the spoon fixing member of the device for measuring color by whitening on the surface for stress detection of plastic products;
FIG. 11 is a cross-sectional view at C-C of FIG. 10;
fig. 12 is a flow chart of a method of a surface whitening color measurement detection device for stress detection of plastic products.
The reference numbers in the figures are:
1-detection table;
11-shank support die;
12-spoon supporting mould;
2-a detection camera;
3-a color measuring instrument;
4-simulating a bending mechanism;
41-spoon part pressing component; 411-moving part; 4111-a movable plate; 4112-a guide rod; 4113-a first buffer spring; 412-a first down-pressure cylinder; 4121-shaft sleeve; 4122-a second buffer spring; 4123-rubber sleeve;
42-a shank compression assembly; 421-handle hold down mold; 4211-rubber strip; 422-a second hold-down cylinder;
43-a scoop section fixing component; 431-moving the sideboard; 4311-insert rod; 4312-first compression spring; 432-fixed sideboard; 433-single-shaft cylinder; 434-a platen; 4341-pressure bar; 4342-second compression spring; 435-triangular block;
44-a shank kick-up assembly; 441-a limiting plate; 4411-strip port; 442-an electric push rod; 443-a roller;
5-a first detection mechanism;
51-a cannula;
52-a pressure sensor;
53-a third compression spring;
6-a second detection mechanism;
61-a tension sensor;
7-plastic spoon.
Detailed Description
For a better understanding of the features and technical solutions of the present invention, as well as the specific objects and functions attained by the present invention, reference is made to the accompanying drawings and detailed description of the invention.
Referring to fig. 1-12, a surface whitening and color measuring device for stress detection of plastic products is arranged on a detection table 1, and comprises a handle supporting mold 11, a spoon supporting mold 12, a detection camera 2, a color measuring instrument 3 and a simulated bending mechanism 4 for applying stress to a plastic spoon 7; a gap is reserved between the handle supporting die 11 and the spoon supporting die 12, the spoon supporting die 12 can move vertically on the detection table 1, and the handle supporting die 11 can move towards the position right above the spoon supporting die 12; the inspection camera 2 is located directly above between the handle support mold 11 and the scoop support mold 12; the color meter 3 is positioned right below the position between the handle part supporting die 11 and the spoon part supporting die 12; the simulated bending mechanism 4 comprises a spoon pressing component 41, a handle pressing component 42, a spoon fixing component 43 and a handle bending component 44; the spoon pressing assembly 41 is arranged right above the spoon supporting die 12; the shank pressing assembly 42 is disposed directly above the shank support die 11; the spoon fixing component 43 is arranged at the side of the spoon supporting die 12; the shank kick-up assembly 44 is connected to the shank support die 11; the detection table 1 is provided with a first detection mechanism 5 which is matched and connected with the spoon part supporting mold 12 and a second detection mechanism 6 which is matched and connected with the handle part supporting mold 11.
When the stress detection process is carried out on the plastic spoon 7, a plurality of plastic spoons 7 are extracted from a batch of plastic spoons 7 in a sampling detection mode, firstly, the plastic spoon 7 is placed on a handle part supporting mold 11 and a spoon part supporting mold 12, the handle part of the plastic spoon 7 is positioned on the handle part supporting mold 11, and the spoon part of the plastic spoon 7 is positioned on the spoon part supporting mold 12;
when the bending test is carried out on the spoon part of the plastic spoon 7 relative to the handle part, the process of lifting the spoon part from the handle part is simulated, the handle part of the plastic spoon 7 is pressed on the handle part supporting die 11 through the handle part pressing component 42, downward pressure is applied to the spoon part of the plastic spoon 7 through the spoon part pressing component 41, the spoon part fixing component 43 is in a state of releasing fixation on the spoon part supporting die 12, the spoon part of the plastic spoon 7 is gradually bent downwards, the spoon part supporting die 12 is pressed downwards, in the process of pressing down the spoon part, the first detection mechanism 5 senses the pressing force of the spoon part supporting die 12, so that the bending degree of the spoon part relative to the handle part is obtained, after the first detection mechanism 5 senses that the pressure reaches a preset value, the spoon part pressing component 41 stops pressing down, the detection camera 2 always observes whether the phenomenon of fracture occurs in the bending process of the spoon part, and the color measuring instrument 3 observes the whitening degree of the joint of the spoon part and the handle part, so that the stress intensity of the plastic spoon 7 is judged;
when the handle part of the plastic spoon 7 is subjected to bending test relative to the spoon part, the process of pressing the spoon part downwards by holding the handle part is simulated, the spoon part supporting die 12 is fixed through the spoon part fixing component 43, then the spoon part of the plastic spoon 7 is tightly pressed on the spoon part supporting die 12 through the spoon part pressing component 41, the handle part bending component 44 drives the handle part supporting die 11 to incline and move towards the right above the spoon part supporting die 12, the handle part of the plastic spoon 7 is gradually lifted upwards until the handle part and the spoon part are in a vertical state, the handle part bending component 44 stops lifting, in the process of lifting the handle part, the second detection mechanism 6 senses the tensile force of the handle part supporting die 11, so that the bending degree of the handle part relative to the spoon part is known, the handle part bending component 44 stops lifting until the tensile force is sensed by the second detection mechanism 6, the detection camera 2 always observes whether the phenomenon of fracture occurs in the bending process of the handle part, and the color measuring instrument 3 observes the whitish degree of the joint of the spoon part and the handle part, so as to judge the stress intensity of the plastic spoon 7;
the stress intensity of the plastic spoon 7 is detected by simulating two processes of using the plastic spoon 7, so that the integral quality of the batch of plastic spoons 7 is known.
Referring to fig. 6, the spoon pressing assembly 41 includes a movable element 411 and a first pressing cylinder 412; the movable piece 411 is arranged between the spoon supporting die 12 and the detection platform 1; the first down-pressure cylinder 412 is provided right above the scoop section support mold 12.
When the spoon portion of the plastic spoon 7 is pressed down by the spoon portion pressing component 41, the spoon portion of the plastic spoon 7 is pressed down by the first pressing cylinder 412, so that the spoon portion of the plastic spoon 7 is bent downwards relative to the handle portion, and because the spoon portion supports the connection between the mold 12 and the detection platform 1 through the movable element 411, after the spoon portion of the plastic spoon 7 is pressed down, the spoon portion supports the mold 12 and moves downwards, so that the support of the spoon portion is guaranteed, the bending of the spoon portion is not hindered, the process that the spoon portion of the plastic spoon 7 is bent downwards relative to the handle portion is completed, and the process that the spoon portion is pressed down when the plastic spoon 7 is used for digging an article is simulated.
Referring to fig. 9, the movable member 411 includes a movable plate 4111; fly leaf 4111 has two, two fly leaves 4111 symmetry and fixed setting are in the bottom both sides of spoon portion support mould 12, the bottom of every fly leaf 4111 all is equipped with two guide bars 4112 towards the direction of examining test table 1, examine and set up the direction guide way that supplies every guide bar 4112 to penetrate on the test table 1, all overlap on every guide bar 4112 and be equipped with a first buffer spring 4113, and the both ends of every first buffer spring 4113 are fixed with the fly leaf 4111 that corresponds respectively and examine test table 1 fixedly.
When the spoon portion supporting mold 12 is pressed to move downwards, because the spoon portion supporting mold 12 is fixedly connected with the movable plate 4111, under the guide of the guide rod 4112 on the movable plate 4111, the spoon portion supporting mold 12 can keep moving vertically, the first buffer spring 4113 is in a compression state, when the spoon portion supporting mold 12 is not pressed, under the acting force of the first buffer spring 4113, the first buffer spring 4113 recovers to a normal state, the spoon portion supporting mold 12 returns to an original position accordingly, and the influence on the detection of the bending of the handle portion is avoided.
Referring to fig. 8, a sleeve 4121 is fitted over the output shaft of the first down-pressure cylinder 412, a second buffer spring 4122 is connected between the inside of the sleeve 4121 and the output shaft of the first down-pressure cylinder 412, and a rubber sleeve 4123 is fitted over the lower end of the sleeve 4121.
When the first downward-pressing cylinder 412 presses the spoon part of the plastic spoon 7 downwards, the output shaft sleeve 4121 of the first downward-pressing cylinder 412 is provided with one shaft sleeve 4121, and the second buffer spring 4122 is connected between the shaft sleeve 4121 and the output shaft, so that the spoon part can be buffered when being pressed downwards, and due to the arrangement of the rubber sleeve 4123 at the lower end of the shaft sleeve 4121 and the acting force of the second buffer spring 4122, the phenomenon that the spoon part is pressed too much to cause perforation in the downward-pressing process of the spoon part and the stress detection condition of the plastic spoon 7 is influenced is avoided.
Referring to fig. 7, the shank pressing assembly 42 includes a shank pressing die 421 and a second pressing cylinder 422; the handle pressing die 421 is arranged right above the handle supporting die 11, and the lower surface of the handle pressing die 421 is provided with a rubber strip 4211; the second pressing cylinder 422 is arranged right above the handle pressing die 421, and the handle pressing die 421 is fixedly connected with an output shaft of the second pressing cylinder 422.
When the stalk portion compresses tightly subassembly 42 and compresses tightly the stalk portion of plastics spoon 7 on stalk portion support mould 11, the second pushes down cylinder 422 and drives the stalk portion and push down mould 421 and move down, and after mould 421 and the laminating of stalk portion support mould 11 are pushed down to the stalk portion, rubber strip 4211 compressed tightly the stalk portion, and the stalk portion of plastics spoon 7 is fixed thereupon, guarantees that spoon portion can carry out crooked detection for the stalk portion.
Referring to fig. 9-11, the scoop mounting assembly 43 includes a moving side plate 431 and a stationary side plate 432; the two movable side plates 431 are symmetrically arranged at two sides of the spoon supporting mold 12, and both the two movable side plates 431 can move towards the spoon supporting mold 12; fixed sideboard 432 has two, two fixed sideboard 432 are all fixed on examining test table 1, two fixed sideboard 432 are located one removal sideboard 431 and keep away from one side that spoon portion supported mould 12 respectively, every moves the sideboard 431 and all extends two inserted bars 4311 towards the direction that corresponds fixed sideboard 432, all set up the socket that supplies to correspond inserted bar 4311 and pass on every fixed sideboard 432, all overlap on every inserted bar 4311 and be equipped with a first compression spring 4312, and the both ends of every first compression spring 4312 are fixed with the removal sideboard 431 that corresponds respectively and fixed sideboard 432 that corresponds, all be equipped with a unipolar cylinder 433 on every fixed sideboard 432, the output shaft of every unipolar cylinder 433 all faces the removal sideboard 431 that corresponds.
When the spoon supporting mold 12 is fixed by the spoon fixing assembly 43, under the condition that the spoon supporting mold 12 is not pressed downwards, the spoon supporting mold 12 is in a state flush with the handle supporting mold 11, the two movable side plates 431 clamp the spoon supporting mold 12 together with the pushing of the two single-shaft cylinders 433 to the movable side plates 431 at the same time, so that the spoon supporting mold is fixed, the first compression spring 4312 is in a normal state, the spoon part of the plastic spoon 7 is fixed together with the pressing of the first pressing cylinder 412, the handle can be detected in bending relative to the spoon part, and when the fixed state is released, the movable side plates 431 are loosened by the two single-shaft cylinders 433, and the two movable side plates 431 do not apply pressure to the spoon supporting mold 12 together with the movable side plates.
As shown in fig. 11, the scoop holding assembly 43 further includes a pressure plate 434 and a triangular block 435; the pressing plate 434 is arranged between the spoon part supporting mold 12 and the detection table 1, a pressing rod 4341 is arranged on the pressing plate 434 in a direction towards the detection table 1, a through hole for the pressing rod 4341 to penetrate is formed in the detection table 1, a second compression spring 4342 is sleeved on the pressing rod 4341, and two ends of the second compression spring 4342 are respectively fixed to the pressing plate 434 and the detection table 1; the triangular block 435 is fixedly arranged at the bottom of the spoon supporting die 12 in an inverted triangular mode, the triangular end of the triangular block 435 is pressed against the surface of the pressing plate 434, and the two movable side plates 431 are both in a folded plate shape attached to the surfaces of the triangular block 435.
When the spoon supporting mold 12 is pressed downwards, the two movable side plates 431 are pushed outwards along with the spoon supporting mold 12, the pressing plate 434 moves downwards under the pressing of the triangular block 435, the pressing plate 434 moves horizontally and vertically under the guiding of the pressing rod 4341, the second compression spring 4342 is in a compressed state, when the pressure on the spoon supporting mold 12 is relieved, the second compression spring 4342 returns to a normal state, the pressing plate 434 returns to an original position, the spoon supporting mold 12 is lifted upwards along with the pressing plate 434 due to the mutual contact between the pressing plate 434 and the triangular block 435, and in order to ensure that the spoon supporting mold 12 is in the original position after being clamped, the movable side plates 431 are in fit with the surfaces of the triangular block 435, so that the triangular block 435 slides along the surfaces of the two movable side plates 431 during the process that the two movable side plates 431 clamp the spoon supporting mold 12, and the spoon supporting mold 12 is automatically adjusted to the original position, and the detection of the plastic spoon 7 is prevented from being influenced.
Referring to fig. 4 and 6, the handle bending-up assembly 44 includes a stopper plate 441 and an electric push rod 442; the two limiting plates 441 are symmetrically arranged at two sides of the handle supporting die 11, and a channel for the handle supporting die 11 to move is reserved between the two limiting plates 441; the electric push rod 442 is fixed on the detection table 1 in an inclined manner, the handle support die 11 is fixedly connected with an output shaft of the electric push rod 442, and the output shaft of the electric push rod 442 faces to the position right above the spoon support die 12; both sides of the handle supporting die 11 are provided with a roller 443 in a rotating manner, each limiting plate 441 is provided with a strip-shaped opening 4411 for the roller 443 to roll, the length direction of the strip-shaped opening 4411 is parallel to the axial direction of the electric push rod 442, and the end of the strip-shaped opening 4411 is positioned right above the joint of the spoon part and the handle part of the plastic spoon 7.
When the handle bending-up assembly 44 drives the handle supporting mold 11 to move, the electric push rod 442 pushes the handle supporting mold 11 to move between the two limiting plates 441, and due to the pushing direction of the electric push rod 442 and the rolling of the roller 443 on the handle supporting mold 11 along the strip-shaped opening 4411, the handle supporting mold 11 can gradually move right above the spoon supporting mold 12, the handle of the plastic spoon 7 is gradually bent until being perpendicular to the spoon, and the pressing on the handle of the plastic spoon 7 is completed.
Referring to fig. 6 and 11, the first detecting mechanism 5 includes a sleeve 51, a pressure sensor 52 and a third compression spring 53, the sleeve 51 is coaxial with the pressing rod 4341 and fixed on the detecting table 1, the sleeve 51 is located below the pressing plate 434, the pressing rod 4341 is inserted into the sleeve 51, the diameter of the pressing rod 4341 is equal to the inner diameter of the sleeve 51, the pressure sensor 52 is fixedly arranged at the lower end of the sleeve 51, the output end of the pressure sensor 52 is located inside the sleeve 51 in an upward form, the third compression spring 53 is arranged inside the sleeve 51, and the third compression spring 53 is located between the pressure sensor 52 and the pressing rod 4341; the second detection mechanism 6 comprises a tension sensor 61, the tension sensor 61 is of a tension spring structure, and two ends of the tension sensor 61 are fixed with the handle supporting die 11 and the detection table 1 respectively.
When the first detection mechanism 5 detects the degree of compression of the spoon part, the pressure lever 4341 is pressed down to change the third compression spring 53 from a normal state to a compressed state, when the third compression spring 53 is pressed on the pressure sensor 52, the pressure sensor 52 senses the pressure brought by the third compression spring 53, so that the degree of compression of the spoon part is judged, when the second detection mechanism 6 detects the degree of compression of the handle part, along with the movement of the handle part supporting die 11, the tension sensed by the tension sensor 61 is gradually increased, so that the degree of compression of the handle part is judged.
Referring to fig. 12, a surface whitening color measurement method for stress detection of a plastic product includes the following steps:
s1, placing a plastic spoon 7 on a spoon part supporting mold 12 and a handle part supporting mold 11;
s2, firstly, the handle part of the plastic spoon 7 is pressed on the handle part supporting die 11 through the handle part pressing component 42, and then the spoon part of the plastic spoon 7 is pressed downwards through the spoon part pressing component 41;
s3, observing the whitening degree of the joint between the spoon part and the handle part when the spoon part of the plastic spoon 7 bends downwards relative to the handle part through the color measuring instrument 3, observing whether the plastic spoon 7 is broken through the detection camera 2, and detecting the compression degree of the spoon part of the plastic spoon 7 when the spoon part bends downwards through the first detection mechanism 5;
s4, fixing the spoon supporting mold 12 through the spoon fixing component 43, then pressing the spoon part of the plastic spoon 7 through the spoon pressing component 41, and then pushing the handle supporting mold 11 upwards through the handle bending-upwards component 44, so that the handle part of the plastic spoon 7 is driven to bend towards the direction of the spoon part;
s5, when the handle part of the plastic spoon 7 is bent upwards relative to the spoon part through the color measuring instrument 3, the whitening degree of the joint between the spoon part and the handle part, whether the plastic spoon 7 is broken or not is observed through the detection camera 2, and the stress degree of the handle part of the plastic spoon 7 when the handle part is bent upwards is known through the second detection mechanism 6.
According to the invention, the stress intensity of the plastic spoon 7 is judged by simulating two simulation processes of the bending mechanism 4 to the plastic spoon 7, observing the plastic spoon 7 in the bending process by the detection camera 2 and the color measuring instrument 3, and observing the whitening degree and the fracture phenomenon at the joint of the spoon part and the handle part of the plastic spoon 7, so that the plastic spoon 7 is prevented from being seriously damaged, and the stress intensity of the plastic spoon 7 is more effectively detected.
The above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A surface whitening color measurement detection device for stress detection of plastic products is arranged on a detection table (1) and comprises a handle part supporting mold (11), a spoon part supporting mold (12), a detection camera (2), a color measurement instrument (3) and a simulation bending mechanism (4) for applying stress to a plastic spoon (7);
a gap is reserved between the handle supporting die (11) and the spoon supporting die (12), the spoon supporting die (12) can vertically move on the detection table (1), and the handle supporting die (11) can move towards the position right above the spoon supporting die (12);
the detection camera (2) is positioned right above the position between the handle part supporting mold (11) and the spoon part supporting mold (12);
the color measuring instrument (3) is positioned right below the position between the handle part supporting die (11) and the spoon part supporting die (12);
the device is characterized in that the simulated bending mechanism (4) comprises a spoon part pressing component (41), a handle part pressing component (42), a spoon part fixing component (43) and a handle part bending-up component (44);
the spoon part pressing component (41) is arranged right above the spoon part supporting die (12);
the shank pressing assembly (42) is arranged right above the shank supporting die (11);
the spoon fixing component (43) is arranged at the side of the spoon supporting mould (12);
the handle bending-up component (44) is connected with the handle supporting die (11);
a first detection mechanism (5) which is matched and connected with the spoon part supporting die (12) and a second detection mechanism (6) which is matched and connected with the handle part supporting die (11) are arranged on the detection table (1);
the spoon fixing assembly (43) comprises a movable side plate (431) and a fixed side plate (432);
the two movable side plates (431) are symmetrically arranged at two sides of the spoon part supporting mould (12), and both the two movable side plates (431) can move towards the spoon part supporting mould (12);
the fixed side plates (432) are provided with two fixed side plates (432), the two fixed side plates (432) are fixed on the detection platform (1), the two fixed side plates (432) are respectively positioned on one side, away from the spoon part, of one movable side plate (431) to support the mold (12), two inserting rods (4311) extend towards the direction of the corresponding fixed side plate (432) on each movable side plate (431), each fixed side plate (432) is provided with a socket for the corresponding inserting rod (4311) to penetrate through, each inserting rod (4311) is sleeved with a first compression spring (4312), two ends of each first compression spring (4312) are fixed with the corresponding movable side plate (431) and fixed with the corresponding fixed side plate (432), each fixed side plate (432) is provided with a single-axis cylinder (433), and an output shaft of each single-axis cylinder (433) faces towards the corresponding movable side plate (431);
the spoon fixing assembly (43) further comprises a pressure plate (434) and a triangular block (435);
the pressing plate (434) is arranged between the spoon part supporting die (12) and the detection table (1), a pressing rod (4341) is arranged on the pressing plate (434) in the direction towards the detection table (1), a penetrating port for the pressing rod (4341) to penetrate is formed in the detection table (1), a second compression spring (4342) is sleeved on the pressing rod (4341), and two ends of the second compression spring (4342) are respectively fixed with the pressing plate (434) and the detection table (1);
the triangular block (435) is fixedly arranged at the bottom of the spoon supporting die (12) in an inverted triangular mode, the triangular end of the triangular block (435) is pressed against the surface of the pressing plate (434), and the two movable side plates (431) are in a folded plate shape attached to the surface of the triangular block (435);
the first detection mechanism (5) comprises a sleeve (51), a pressure sensor (52) and a third compression spring (53), the sleeve (51) and a pressure rod (4341) are coaxial and fixed on the detection table (1), the sleeve (51) is positioned below the pressure plate (434), the pressure rod (4341) is inserted in the sleeve (51), the diameter of the pressure rod (4341) is equal to the inner diameter of the sleeve (51), the pressure sensor (52) is fixedly arranged at the lower end of the sleeve (51), the output end of the pressure sensor (52) is upwards positioned in the sleeve (51), the third compression spring (53) is arranged in the sleeve (51), and the third compression spring (53) is positioned between the pressure sensor (52) and the pressure rod (4341);
the second detection mechanism (6) comprises a tension sensor (61), the tension sensor (61) is of a tension spring structure, and two ends of the tension sensor (61) are fixed with the handle supporting die (11) and the detection table (1) respectively.
2. The plastic product stress detection surface whitening color measurement device as recited in claim 1, wherein the spoon portion pressing assembly (41) comprises a movable member (411) and a first pressing cylinder (412);
the moving piece (411) is arranged between the spoon part supporting die (12) and the detection platform (1);
the first lower air cylinder (412) is arranged right above the spoon supporting die (12).
3. A device for detecting whitening on a surface of a plastic product for detecting stress according to claim 2, wherein the movable member (411) comprises a movable plate (4111);
fly leaf (4111) has two, two fly leaves (4111) symmetry and fixed setting are in the bottom both sides of spoon portion support mould (12), the direction of the bottom orientation detection platform (1) of every fly leaf (4111) all is equipped with two guide bars (4112), set up the direction mouth that supplies every guide bar (4112) to penetrate on detecting platform (1), all overlap on every guide bar (4112) and be equipped with a first buffer spring (4113), and the both ends of every first buffer spring (4113) are fixed with fly leaf (4111) that corresponds respectively and detect platform (1) fixedly.
4. The device for detecting whitening on surface of plastic stress according to claim 2, wherein a sleeve (4121) is sleeved on the output shaft of the first depressing cylinder (412), a second buffer spring (4122) is connected between the inside of the sleeve (4121) and the output shaft of the first depressing cylinder (412), and a rubber sleeve (4123) is sleeved on the lower end of the sleeve (4121).
5. The device for detecting whitening on surface of plastic product for stress detection according to claim 1, wherein the handle pressing assembly (42) comprises a handle pressing die (421) and a second pressing cylinder (422);
the handle pressing die (421) is arranged right above the handle supporting die (11), and the lower surface of the handle pressing die (421) is provided with a rubber strip (4211);
the second pressing cylinder (422) is arranged right above the handle pressing die (421), and the handle pressing die (421) is fixedly connected with an output shaft of the second pressing cylinder (422).
6. The plastic product stress detection surface whitening color measurement device as recited in claim 1, wherein the handle bending-up assembly (44) comprises a limit plate (441) and an electric push rod (442);
the two limiting plates (441) are symmetrically arranged at two sides of the handle supporting die (11), and a channel for the handle supporting die (11) to move is reserved between the two limiting plates (441);
the electric push rod (442) is fixed on the detection table (1) in an inclined mode, the handle part supporting die (11) is fixedly connected with an output shaft of the electric push rod (442), and the output shaft of the electric push rod (442) faces to the position right above the spoon part supporting die (12);
both sides that the mould (11) was supported to the stalk portion all rotate and are equipped with a gyro wheel (443), all offer on every limiting plate (441) and supply to correspond rolling bar mouth (4411) of gyro wheel (443), the length direction of bar mouth (4411) is on a parallel with electric putter (442)'s axis direction to the end of bar mouth (4411) is located the spoon portion of plastics spoon (7) and the stalk portion junction directly over.
7. A surface whitening color measurement detection method for stress detection of plastic products, which adopts the surface whitening color measurement detection device for stress detection of plastic products as claimed in any one of claims 1-5, and is characterized by comprising the following steps:
s1, placing a plastic spoon (7) on a spoon part supporting mold (12) and a handle part supporting mold (11);
s2, firstly, the handle part of the plastic spoon (7) is pressed on the handle part supporting die (11) through the handle part pressing component (42), and then the spoon part of the plastic spoon (7) is pressed downwards through the spoon part pressing component (41);
s3, the whitening degree of the joint between the spoon part and the handle part is observed through the color measuring instrument (3) when the spoon part of the plastic spoon (7) bends downwards relative to the handle part, whether the plastic spoon (7) is broken or not is observed through the detection camera (2), and the pressing degree of the plastic spoon (7) when the spoon part bends downwards is detected through the first detection mechanism (5);
s4, fixing the spoon supporting die (12) through the spoon fixing component (43), then pressing the spoon part of the plastic spoon (7) through the spoon part pressing component (41), and then pushing up the handle supporting die (11) through the handle bending-up component (44), so that the handle part of the plastic spoon (7) is driven to bend towards the spoon part;
s5, when the handle part of the plastic spoon (7) is bent upwards relative to the spoon part through the color measuring instrument (3), the whitening degree of the joint between the spoon part and the handle part is observed, whether the plastic spoon (7) is broken or not is observed through the detection camera (2), and the pressing degree of the handle part of the plastic spoon (7) when the handle part is bent upwards is known through the second detection mechanism (6).
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