CN115942716A - LED double-sided education machine backlight external member low temperature performance detection device - Google Patents
LED double-sided education machine backlight external member low temperature performance detection device Download PDFInfo
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- CN115942716A CN115942716A CN202310023738.9A CN202310023738A CN115942716A CN 115942716 A CN115942716 A CN 115942716A CN 202310023738 A CN202310023738 A CN 202310023738A CN 115942716 A CN115942716 A CN 115942716A
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- refrigeration
- backlight
- external member
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- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 53
- 238000005057 refrigeration Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 238000004321 preservation Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 2
- 230000000712 assembly Effects 0.000 abstract description 10
- 238000000429 assembly Methods 0.000 abstract description 10
- 238000004378 air conditioning Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The invention discloses a device for detecting the low-temperature performance of a backlight assembly of an LED double-sided education machine, which belongs to the technical field of electronic product detection and comprises a cooling compartment and a plurality of groups of refrigeration assemblies which are uniformly arranged in the cooling compartment at intervals along the vertical direction, wherein a clamping assembly for clamping the backlight assembly is arranged in the cooling compartment; the bottom of cooling compartment is provided with the heating element who is used for heating the external member in a poor light, and the top of cooling compartment is provided with vertical displacement drive arrangement, and vertical displacement drive arrangement's output is connected to the centre gripping subassembly, and vertical displacement drive arrangement can drive the centre gripping subassembly along vertical displacement in order to pass through multiunit refrigeration assembly, and the centre gripping subassembly can drive the external member in a poor light and keep away from each other or be close to for heating element simultaneously. The device provided by the invention can be used for gently changing the ambient temperature of the backlight kit while facilitating detection, avoiding the influence on the detection result due to the problems and effectively improving the detection efficiency of the device.
Description
Technical Field
The invention belongs to the technical field of electronic product detection, and particularly relates to a low-temperature performance detection device for a backlight kit of an LED double-sided education machine.
Background
Along with the development of economy, the society enters the information age, and in modern education, LED two-sided education machine has played the effect of the weight of lifting, and LED two-sided education machine is updated fast more and more, and the quality is also mentioning continuously and is promoted, because the manufacturing level is higher and higher, when making LED two-sided education machine, need carry out low temperature performance to LED two-sided education machine external member in a poor light. The conventional low-temperature performance detection method of the backlight assembly is generally to heat the backlight assembly to the working temperature and then directly place the backlight assembly in a low-temperature detection compartment for detection, and due to the rapid change of the environmental temperature, the method easily causes problems such as surface cracking of the backlight assembly and the like, thereby affecting the detection result.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a device for detecting low temperature performance of a backlight assembly of an LED two-sided education machine, which facilitates detection, and allows ambient temperature of the backlight assembly to be gently changed, thereby avoiding the influence on the detection result due to the above problems, and effectively improving the detection efficiency of the device.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention relates to a low-temperature performance detection device for a backlight assembly of an LED double-sided education machine, which comprises a cooling compartment and a plurality of groups of refrigerating assemblies, wherein the plurality of groups of refrigerating assemblies are uniformly arranged in the cooling compartment at intervals along the vertical direction; the bottom of cooling compartment is provided with the heating element who is used for heating the external member in a poor light, the top of cooling compartment is provided with vertical displacement drive arrangement, vertical displacement drive arrangement's output is connected to the centre gripping subassembly, vertical displacement drive arrangement can drive the centre gripping subassembly along vertical displacement in order to pass through the multiunit refrigeration subassembly, simultaneously the centre gripping subassembly can drive the external member in a poor light and keep away from each other or be close to for heating element.
The invention has the beneficial effects that:
according to the invention, the heating assembly is arranged, so that the backlight external member can be heated to meet the working temperature during testing, the clamping assembly can drive the backlight external member to be away from or close to the heating assembly, and gradient change of temperature is realized in a baking and cooling manner, so that the ambient temperature of the backlight external member is gently changed, the influence on the detection result due to rapid change of temperature is avoided, and the detection efficiency of the device can be effectively improved.
In the device, the plurality of groups of refrigerating assemblies are arranged, the plurality of groups of refrigerating assemblies simultaneously refrigerate the inner cavity of the cooling compartment, and when the backlight assembly moves to the preset height, the backlight assembly in the plane can be independently refrigerated through the single group of refrigerating assemblies, the cooling compartment is not required to be refrigerated integrally, the refrigerating time is greatly shortened, the rapid and accurate control of the temperature can be realized, and the detection efficiency can be further improved.
Additional advantages, objects, and features of the invention will be set forth in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of a combination of 4 refrigeration components;
FIG. 4 is a schematic view of a refrigeration assembly;
FIG. 5 is a schematic view of a heating assembly;
FIG. 6 is an enlarged view of FIG. 5 at B;
fig. 7 is a schematic structural view of the thermal insulation case in an open state.
The drawings are numbered as follows: the cooling compartment 1, the refrigeration component 2, the clamping component 3, the heating component 4, the vertical displacement driving device 5, the outer layer box 6, the inner layer box 7, the precooling cavity 8, the air cooler 9, the refrigeration pipe 10, the hose 11, the cold air hole 12, the expansion device 13, the slide block 14, the chute 15, the air nozzle 16, the corrugated pipe 17, the through hole 18, the support plate 19, the linear displacement motor 20, the rack 21, the gear 22, the rotating motor 23, the heating platform 24, the groove 25, the cable 26, the power supply 27, the heat preservation shell 28, the elastic reset device 29, the boss 30, the strip-shaped hole 31, the inner rod 32, the outer rod 33 and the elastic supporting device 34.
Detailed Description
As shown in figures 1-7, the low-temperature performance detection device for the backlight assembly of the LED double-sided education machine comprises a cooling compartment 1 and a plurality of groups of refrigeration components 2 which are uniformly arranged in the cooling compartment 1 at intervals along the vertical direction, wherein the cooling compartment 1 is arranged in a sealed manner, the cooling compartment 1 is square in shape, and the area of the cooling compartment 1 is 0.5m 2 ～5m 2 Meanwhile, each group of refrigerating assemblies 2 are arranged in the same plane, the groups of refrigerating assemblies 2 are arranged on the inner wall of the cooling compartment 1 in a vertical arrangement mode, so that the groups of refrigerating assemblies 2 refrigerate the inner cavity of the cooling compartment 1 at the same time, and certainly, when the backlight assembly moves to the corresponding position along the vertical direction, the single group of refrigerating assemblies 2 can refrigerate the backlight assembly in the plane independently.
Specifically, a clamping assembly 3 for clamping the backlight external member is arranged in the cooling compartment 1, and the clamping assembly 3 only needs to adopt the existing triangular clamping jaw mechanical arm to clamp the backlight external member from the outer side of the backlight external member; the bottom of cooling compartment 1 is provided with heating element 4 that is used for the external member heating of being shaded, and heating element 4 can carry out the thermal radiation heating to the lower surface of external member in a poor light to it, and the top of cooling compartment 1 is provided with vertical displacement drive arrangement 5, and vertical displacement drive arrangement 5 adopts linear stepping motor or pneumatic cylinder, can drive output linear displacement can. The output of vertical displacement drive arrangement 5 is connected to centre gripping subassembly 3, and vertical displacement drive arrangement 5 can drive centre gripping subassembly 3 along vertical displacement in order to pass through multiunit refrigeration subassembly 2, reachs the refrigeration subassembly 2 on layer, and the refrigeration subassembly 2 on this layer can be convenient for heat it alone, and centre gripping subassembly 3 can drive the external member of being shaded and keep away from each other or be close to for heating element 4 simultaneously to adjust the distance of heat radiation. According to the invention, gradient type change of temperature is realized by baking and cooling at the same time and changing the baking distance, so that the ambient temperature of the backlight external member is gently changed, the influence on a detection result due to rapid change of temperature is avoided, and the detection efficiency of the device can be effectively improved.
In the embodiment, the cooling compartment 1 comprises an outer-layer box body 6 and an inner-layer box body 7, the inner-layer box body 7 is formed by inward offsetting of the outer-layer box body 6 by a distance, the specific shape is completely the same as that of the outer-layer box body 6, only the size is different, the refrigeration assembly 2, the clamping assembly 3 and the heating assembly 4 are all arranged in the inner-layer box body 7 and are connected through a top plate or a bottom plate, a precooling cavity 8 is formed between the outer-layer box body 6 and the inner-layer box body 7 at intervals, the precooling cavity 8 is communicated with the refrigeration assembly 2, of course, a rib plate can be arranged in the precooling cavity 8 to realize the reinforcing performance of the connection between the inner-layer box body 7 and the outer-layer box body 6, an air cooler 9 is fixed on the outer side of the outer-layer box body 6, and the air cooler 9 is communicated with the precooling cavity 8; can carry out the precooling to the cooling box through setting up precooling chamber 8, when making its cooling faster, can let the refrigeration subassembly 2 in the cooling box wholly refrigerate through precooling chamber 8, can let the temperature of each group refrigeration subassembly 2 more balanced, guarantee that the device can steadily, refrigerate continuously.
In this embodiment, the refrigeration assembly 2 includes four refrigeration tubes 10 arranged in a rectangular shape, the four refrigeration tubes 10 are respectively parallel to the four inner side walls of the inner box 7, the rectangular shape is not a completely regular rectangular shape, the specific arrangement mode is as shown in the figure, one end of each refrigeration tube 10 abuts against the middle of another adjacent refrigeration tube 10, the other end of each refrigeration tube 10 is communicated with the pre-cooling cavity 8 through a hose 11, and thus, by moving the refrigeration tubes 10, the four refrigeration tubes 10 can surround a rectangular frame with a variable size, and the backlight assembly can penetrate through the rectangular frame. One side of the refrigeration pipe 10, which is far away from the cooling compartment 1, is provided with a cold air hole 12 for emitting cold air transmitted from the pre-cooling cavity 8, one side of the refrigeration pipe 10, which faces the cooling compartment 1, is connected with a slide block 14 through a telescopic device 13, the slide block 14 is axially vertical to the telescopic device 13, the slide block 14 and the refrigeration pipe 10 are positioned in the same plane, the extension directions of the slide block and the refrigeration pipe are also the same, the slide block 14 is arranged in a slide groove 15 fixed on the inner wall of the cooling compartment 1 in a sliding manner, the slide groove 15 is used for limiting, the inner wall of the cooling compartment 1 is simultaneously provided with a horizontal displacement driving device for driving the slide block 14 to displace along the slide groove 15, and the horizontal displacement driving device can drive the slide block 14 to move in the slide groove 15, so that the position of the slide block 14 is changed; the distance between the refrigerating tubes 10 and the inner layer box 7 can be changed through the telescopic device 13, the telescopic device 13 is matched with the sliding block 14, the positions of the refrigerating tubes 10 can be changed simultaneously, the plane positions of the four refrigerating tubes 10 in the same plane can be changed, the size of the rectangular frame can be adjusted, when the backlight external member is positioned in the rectangular frame, the size of the rectangular frame is related to the distance between the backlight external member, namely, the distance between the cold air holes 12 on the rectangular frame and the backlight external member can be changed, and the refrigerating speed can be adjusted.
For example, when the backlight assembly moves vertically to the position of the layer corresponding to the backlight assembly in the same group of refrigeration modules 2, when the size of the rectangular frame is reduced, it is proved that the position of the cold air hole 12 on the refrigeration tube 10 is close to the position of the backlight assembly, and the backlight assembly can be cooled more rapidly. On the contrary, when the size of the rectangular frame is increased, it is proved that the position of the cold air hole 12 on the refrigerating tube 10 is far away from the position of the backlight assembly, and at this time, the refrigerating efficiency of the backlight assembly is reduced, so that the refrigerating effect of the layer of refrigerating assembly 2 on the backlight assembly can be reduced, and the actual requirement can be met.
In this embodiment, there is jet head 16 at the edge of air conditioning hole 12 through bellows 17 sealing connection, the air conditioning in precooling chamber 8 enters into refrigerating pipe 10 through hose 11, air conditioning in refrigerating pipe 10 then can enter into jet head 16 through bellows 17, a plurality of through-holes 18 have been seted up on the terminal surface of jet head 16, discharge air conditioning through-hole 18, through-hole 18 and refrigerating pipe 10 intercommunication, the outside of jet head 16 is connected with extension board 19, extension board 19 fixed connection is to linear displacement motor 20's output, linear displacement motor 20 is fixed in the outside of refrigerating pipe 10, linear displacement motor 20 can drive extension board 19, thereby it is flexible to drive jet head 16, in order to realize the fine setting of spout position, let jet head 16 and the relative position of external member in a poor light can obtain further adjustment, in order to accord with actual refrigeration needs.
For example, when it is desired to reduce the size of a rectangular frame, the gas showerhead 16 at the distal end, i.e., the end remote from the expansion device 13, is prevented from interfering with the adjacent refrigerant tubes 10 by being retracted. Meanwhile, the rest of the air nozzles 16 can extend outwards, so that the air nozzles can be closer to the backlight assembly, and a faster refrigeration effect is realized.
In this embodiment, the horizontal displacement driving device includes a rack 21, a gear 22 and a rotating motor 23, the rack 21 extends along the length direction of the slider 14, the gear 22 is engaged with the rack 21, the rotating motor 23 is fixed on the inner wall of the cooling compartment 1, the driving gear 22 rotates, the slider 14 is driven to move by the rotating motor 23 and the gear 22, and the position of the slider 14 can be conveniently controlled.
In this embodiment, the heating assembly 4 includes the heating stage 24, and a plurality of circular arc-shaped grooves 25 are concentrically seted up to the upper surface of heating stage 24, install the resistance wire in the groove 25, and the resistance wire is connected to power 27 through cable 26, and when the resistance wire was heated, can heat the external member in a poor light in top, and the resistance wire is hidden in the groove 25, avoids clamping assembly 3 or external member in a poor light to cause the influence of friction or interference to it.
In this embodiment, a plurality of fan-shaped heat preservation shells 28 are annularly arranged on the heating table 24, the plurality of heat preservation shells 28 are circumferentially arranged to form an annular heating cavity for heating the backlight assembly, the outer bottom of the heat preservation shell 28 is hinged to the heating table 24, an elastic reset device 29 is simultaneously arranged between the heat preservation shell 28 and the heating table 24, the elastic reset device 29 is used for keeping the heat preservation shell 28 in an open state, the elastic reset device 29 is a reset torsion spring, and is sleeved outside a hinged shaft between the heat preservation shell 28 and the heating table 24, when the clamping assembly 3 drives the backlight assembly to abut against the middle of the heat preservation shell 28, the backlight assembly can drive the heat preservation shell 28 to rotate to enable the heat preservation shell to be in a closed state, by arranging the heat preservation shells 28, when the backlight assembly is adjacent to the heating table 24, the heat preservation shell 28 can be closed, and can be better heated at this time, and the influence of the external refrigeration assembly 2 on the backlight assembly is reduced. When the backlight assembly moves upwards, the heat preservation shell 28 is automatically opened under the action of the elastic resetting device 29, and the bottom of the backlight assembly can be normally heated.
In this embodiment, a boss 30 is disposed in the middle of the heat preservation shell 28, the boss 30 protrudes from the bottom surface of the heat preservation shell 28, a plurality of holes 31 are simultaneously formed in the bottom surface of the heat preservation shell 28, and the boss 30 is disposed to receive the pressure of the backlight kit, so that the boss 30 can be in better contact with the backlight kit, and the heat preservation shell 28 can be closed conveniently.
In this embodiment, an inner rod 32 is fixed at the bottom of the heating stage 24, the inner rod 32 is slidably disposed in one end of an outer rod 33, the other end of the outer rod 33 is fixed at the bottom of the cooling compartment 1, an elastic supporting device 34 is disposed between the heating stage 24 and the cooling compartment 1, the heating stage 24 can be elastically supported by the elastic supporting device 34, and damage caused by direct rigid contact between the heating stage 24 and the backlight assembly is avoided.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. The utility model provides a LED two-sided education machine external member low temperature performance detection device that is shaded which characterized in that: the refrigeration device comprises a cooling compartment and a plurality of groups of refrigeration components which are uniformly arranged in the cooling compartment at intervals along the vertical direction, wherein the plurality of groups of refrigeration components refrigerate the inner cavity of the cooling compartment at the same time, the single group of refrigeration components can refrigerate the backlight component in the plane independently, and a clamping component for clamping the backlight assembly is arranged in the cooling compartment; the bottom of cooling compartment is provided with the heating element who is used for heating the external member in a poor light, the top of cooling compartment is provided with vertical displacement drive arrangement, vertical displacement drive arrangement's output is connected to the centre gripping subassembly, vertical displacement drive arrangement can drive the centre gripping subassembly along vertical displacement in order to pass through the multiunit refrigeration subassembly, simultaneously the centre gripping subassembly can drive the external member in a poor light and keep away from each other or be close to for heating element.
2. The device for detecting the low-temperature performance of the LED double-sided education machine backlight kit according to claim 1, wherein: the cooling compartment comprises an outer box body and an inner box body, the refrigerating assembly, the clamping assembly and the heating assembly are all arranged in the inner box body, a pre-cooling cavity is formed between the outer box body and the inner box body at intervals, an air cooler is fixed on the outer side of the outer box body, and the air cooler is communicated with the pre-cooling cavity.
3. The device for detecting the low-temperature performance of the LED double-sided education machine backlight kit according to claim 2, wherein: the refrigeration assembly comprises four refrigeration pipes which are arranged in a rectangular shape, one end of each refrigeration pipe is abutted to the middle of another adjacent refrigeration pipe, the other end of each refrigeration pipe is communicated with the precooling cavity through a hose, a cold air hole is formed in one side, deviating from the cooling compartment, of each refrigeration pipe, the refrigeration pipe faces one side of the cooling compartment and is connected with a sliding block through a telescopic device, the sliding block is arranged in a fixed sliding groove in the inner wall of the cooling compartment in a sliding mode, and the inner wall of the cooling compartment is simultaneously provided with a drive unit for driving the sliding block to move along the sliding groove.
4. The LED double-sided education machine backlight kit low-temperature performance detection device as claimed in claim 3, characterized in that: the edge of the cold air hole is connected with an air nozzle through a corrugated pipe in a sealing mode, a plurality of through holes are formed in the end face of the air nozzle and communicated with the refrigerating pipe, a support plate is connected to the outer side of the air nozzle and fixedly connected to the output end of a linear displacement motor, and the linear displacement motor is fixed to the outer side of the refrigerating pipe.
5. The LED double-sided education machine backlight kit low-temperature performance detection device as claimed in claim 3, characterized in that: the horizontal displacement driving device comprises a rack, a gear and a rotating motor, wherein the rack extends along the length direction of the sliding block, the gear is meshed with the rack, and the rotating motor is fixed on the inner wall of the cooling compartment and drives the gear to rotate.
6. The device for detecting the low-temperature performance of the LED double-sided education machine backlight kit according to any one of claims 1 to 5, wherein: the heating assembly comprises a heating table, a plurality of circular arc-shaped grooves are concentrically formed in the upper surface of the heating table, resistance wires are installed in the grooves, and the resistance wires are connected to a power supply through cables.
7. The device for detecting the low-temperature performance of the LED double-sided education machine backlight kit according to claim 6, wherein: the annular is provided with a plurality of sectorial heat preservation shells on the warm table, and a plurality of heat preservation shells are the circumference and arrange the annular heating chamber that forms and be used for the external member heating in a poor light, the outside bottom and the warm table of heat preservation shell are articulated, be provided with elasticity resetting means between heat preservation shell and the warm table simultaneously, elasticity resetting means is used for keeping the heat preservation shell in the open mode, and when centre gripping subassembly drove the external member in a poor light and offset with the middle part of heat preservation shell, the external member in a poor light can drive the rotation of heat preservation shell and make it be in the closed condition.
8. The device for detecting the low-temperature performance of the LED double-sided education machine backlight kit according to claim 7, wherein: the middle part of heat preservation shell is provided with the boss, boss protrusion in the bottom surface of heat preservation shell, a plurality of bar holes have been seted up simultaneously on the bottom surface of heat preservation shell.
9. The device for detecting the low-temperature performance of the LED double-sided education machine backlight kit according to claim 6, wherein: an inner rod is fixed at the bottom of the heating table, the inner rod is arranged in one end of the outer rod in a sliding mode, the other end of the outer rod is fixed at the bottom of the cooling compartment, and an elastic supporting device is arranged between the heating table and the cooling compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310023738.9A CN115942716B (en) | 2023-01-09 | 2023-01-09 | LED double-sided education machine backlight external member low temperature performance detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310023738.9A CN115942716B (en) | 2023-01-09 | 2023-01-09 | LED double-sided education machine backlight external member low temperature performance detection device |
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| CN115942716A true CN115942716A (en) | 2023-04-07 |
| CN115942716B CN115942716B (en) | 2023-11-03 |
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| CN204925829U (en) * | 2015-09-01 | 2015-12-30 | 东莞市德思环境仪器有限公司 | Quick temperature variation test chamber |
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| CN115942716B (en) | 2023-11-03 |
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