CN117664776A - Energy-saving rapid temperature test box based on mixed refrigerant and control method - Google Patents
Energy-saving rapid temperature test box based on mixed refrigerant and control method Download PDFInfo
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- CN117664776A CN117664776A CN202410137201.XA CN202410137201A CN117664776A CN 117664776 A CN117664776 A CN 117664776A CN 202410137201 A CN202410137201 A CN 202410137201A CN 117664776 A CN117664776 A CN 117664776A
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- 238000012360 testing method Methods 0.000 title claims abstract description 47
- 239000003507 refrigerant Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims description 58
- 238000004891 communication Methods 0.000 claims description 41
- 238000005192 partition Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 8
- 230000000452 restraining effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000009863 impact test Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003320 cold-resistant material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The invention relates to the technical field of detection equipment, and particularly discloses an energy-saving rapid temperature test box based on mixed refrigerant and a control method thereof, wherein the energy-saving rapid temperature test box comprises a machine body, and a lifting mechanism is arranged on a cold chamber; the clamping assembly comprises a clamping frame fixedly arranged on the movable end of the lifting mechanism, and the clamping frame is provided with a heat-resistant clamping mechanism and a cold-resistant clamping mechanism; the pushing mechanism comprises at least two guide holes arranged on the inner wall of the conversion hole; according to the energy-saving rapid temperature test box based on the mixed refrigerant, when the lifting mechanism is controlled to drive the clamping assembly to move upwards, the limiting rod drives the heat-resistant clamping mechanism to clamp a workpiece and drive the workpiece to be placed in the hot chamber for high-temperature test, when the lifting mechanism is controlled to drive the clamping assembly to move downwards, the limiting rod drives the cold-resistant clamping mechanism to clamp the workpiece, and the heat-resistant clamping mechanism loosens the workpiece so as to drive the workpiece to enter the cold chamber for low-temperature test, so that the influence of the clamp is reduced, and the service life of the clamp is prevented from being influenced.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to an energy-saving rapid temperature test box based on mixed refrigerant and a control method.
Background
The rapid temperature test box can be used for testing the tolerance degree of materials or composite materials under the continuous environment with extremely high temperature and extremely low temperature in the moment, and testing the chemical change or physical injury caused by thermal expansion and contraction in the shortest time. The test object can also be electronic and electric parts, automatic parts, communication components, electronic chips, automobile parts, PCB substrates, metals, chemical materials, high polymer materials, plastics and the like. The rapid temperature test box is widely applied to the fields of national defense industry, aviation, household appliance industry and the like.
In order to obtain the low temperature required by the test in the quick temperature test box, a refrigeration cycle is generally required, namely, low-pressure gaseous refrigerant is firstly sucked into a compressor and compressed into high-temperature high-pressure gaseous refrigerant, the gaseous refrigerant flows into a condenser outside the machine, and gradually condenses into high-pressure liquid refrigerant in the process of radiating outwards, then the high-pressure liquid refrigerant is depressurized through a throttling device and becomes a low-temperature low-pressure gas-liquid refrigerant mixture, the gas-liquid mixed refrigerant enters an indoor evaporator and is continuously vaporized through absorbing heat in indoor air, so that the temperature in the machine is reduced, the refrigerant also becomes low-pressure gas and then enters the compressor again, and the refrigerant can continuously refrigerate in the machine in a circulating mode.
In the related art, when the temperature impact test is carried out, as the temperature impact test involves rapid change of temperature, the clamp can be influenced, and the thermal expansion and the cold contraction of the clamp can possibly cause the stability of the clamp to be influenced, so that the service life of the clamp is shortened.
Disclosure of Invention
The invention provides an energy-saving rapid temperature test box based on mixed refrigerant and a control method, and aims to solve the problems that the stability of a clamp is affected and the service life of the clamp is shortened due to the fact that the rapid change of temperature is involved in the temperature impact test in the related technology.
The invention discloses an energy-saving rapid temperature test box based on mixed refrigerant, which comprises a machine body, wherein a processing cavity is arranged in the machine body, a partition plate is arranged in the processing cavity, the processing cavity is divided into a hot chamber and a cold chamber by the partition plate, a conversion hole is formed in the middle of the partition plate, and the energy-saving rapid temperature test box further comprises:
the lifting mechanism is arranged on the cold chamber;
the clamping assembly comprises a clamping frame fixedly arranged at the movable end of the lifting mechanism, a heat-resistant clamping mechanism and a cold-resistant clamping mechanism are arranged on the clamping frame, the heat-resistant clamping mechanism comprises at least four first communication holes formed in the clamping frame, a first clamping rod and a first push rod are slidably arranged in each first communication hole, a first transmission medium is arranged between the first clamping rod and the first push rod, and an upper connecting ring is fixedly arranged at the top of each first push rod; the cold-resistant clamping mechanism comprises at least four second communication holes formed in the clamping frame, a second clamping rod and a second push rod are slidably arranged in each second communication hole, a second transmission medium is arranged between the second clamping rod and the second push rod, and a lower connecting ring is fixedly arranged at the bottom of each second push rod;
The pushing mechanism comprises at least two guide holes arranged on the inner wall of the conversion hole, a limiting rod is arranged on the inner wall of each guide hole in a single-degree-of-freedom sliding mode, a third elastic piece is fixedly arranged between the limiting rod and the inner wall of the guide hole, and a fourth inclined plane and a fifth inclined plane are arranged on the limiting rod.
Preferably, the machine body is also provided with an alternating current mechanism;
the alternating current mechanism comprises an air pump arranged on the machine body, and a hot air conveying channel and a cold air conveying channel which are all arranged on the partition plate, wherein the air inlet end of the air pump is communicated with the interior of the cold air chamber, the air outlet end of the air pump is communicated with one end of the cold air conveying channel, the other end of the cold air conveying channel is communicated with the bottom of the conversion hole, one end of the hot air conveying channel is communicated with the interior of the hot chamber, and the other end of the hot air conveying channel is communicated with the top of the conversion hole.
Preferably, the lifting mechanism comprises a telescopic driving device fixedly arranged at the bottom of the cold chamber, a movable end of the telescopic driving device is fixedly provided with a movable seat, and the clamping assembly is arranged on the movable seat.
Preferably, the movable seat comprises a connecting cylinder fixedly arranged at the movable end of the telescopic driving device, a first rotation driving device is fixedly arranged at the top of the connecting cylinder, a swivel base is fixedly arranged at the output end of the first rotation driving device, and the clamping assembly is fixedly arranged on the swivel base.
Preferably, an upper friction boss and a lower friction boss are arranged on the clamping frame, an upper friction hole is formed in the upper connecting ring, the upper friction hole is in sliding connection with the upper friction boss, and the friction force between the upper friction hole and the upper friction boss is greater than the gravity of a workpiece; the lower connecting ring is provided with a lower friction hole, the lower friction hole is in sliding connection with the lower friction boss, and the friction force between the lower friction hole and the lower friction boss is greater than the sum of the weights of the workpiece, the lower connecting ring and all the second push rods.
Preferably, the inner wall of each first communication hole is further provided with a first guide groove, the inner wall of each first guide groove is slidably provided with a first sealing plate, the first sealing plates can seal the first communication holes, each first sealing plate is provided with a first inclined surface, and the first inclined surfaces can be pushed when the first clamping rods move so as to force the first sealing plates to retract into the first guide grooves;
every the inner wall of second intercommunicating pore has still seted up the second guide way, the inner wall slip of second guide way is provided with the second shrouding, the second shrouding can be right the shutoff of second intercommunicating pore, every all be provided with the second inclined plane on the second shrouding, can push the second inclined plane when the second clamp lever removes, in order to force the second shrouding shrink into in the second guide way.
Preferably, a first adjusting hole is further formed in each first communication hole, a first adjusting rod is slidably arranged on the inner wall of each first adjusting hole, a first bearing plate is fixedly arranged on each first adjusting rod, and a first elastic piece is fixedly arranged between each first bearing plate and each clamping frame;
a second adjusting hole is further formed in each second communication hole, a second adjusting rod is slidably arranged on the inner wall of each second adjusting hole, a second bearing plate is fixedly arranged on each second adjusting rod, the second bearing plates and the first bearing plates are located on the same plane, and a second elastic piece is fixedly arranged between each second bearing plate and the clamping frame;
the clamping assembly is characterized by further comprising a fixing strip fixedly arranged on the connecting cylinder, an ejection block corresponding to the first bearing plate and the second bearing plate is fixedly arranged on the fixing strip, a third inclined surface is arranged on the ejection block, and when the clamping frame rotates, the first bearing plate and the second bearing plate can slide along the third inclined surface so as to force the first bearing plate and the second bearing plate to move downwards.
Preferably, the device further comprises a plugging device, wherein the plugging device comprises an upper plugging mechanism arranged in the hot chamber and a lower plugging mechanism arranged in the cold chamber;
The upper sealing mechanism comprises an upper driving mechanism arranged on the machine body and four upper sliding grooves formed in the upper surface of the partition plate, upper sliding rods are arranged on the four upper sliding grooves in a sliding mode, an upper sealing plate is fixedly arranged on each upper sliding rod, the lower surface of each upper sealing plate is in sliding fit with the upper surface of the partition plate, the four upper sealing plates are mutually close to each other and can be spliced into a seamless plate body, and the upper driving mechanism can drive the four upper sliding rods to move along the four upper sliding grooves respectively;
the lower plugging mechanism comprises a lower driving mechanism arranged on a machine body and four lower sliding grooves formed in the lower surface of the partition plate, lower sliding rods are arranged on the lower sliding grooves in a sliding mode, lower sealing plates are fixedly arranged on the lower sliding rods, the upper surfaces of the lower sealing plates are in sliding fit with the lower surface of the partition plate, the lower sealing plates are four in mutual approaching mode and can be spliced into an annular plate body, the inner sides of the annular plate bodies can be fit with the outer surfaces of the connecting cylinders, and the lower driving mechanism can drive the four lower sliding rods to move along the four lower sliding grooves respectively.
Preferably, the upper driving mechanism comprises an upper driving disc and a second rotation driving device fixedly arranged on the machine body, four upper inclined grooves are formed in the upper driving disc, the four upper inclined grooves are respectively and slidably connected with the four upper sliding rods, upper driving teeth are arranged on the edge of the upper driving disc, an upper worm is fixedly arranged at the output end of the second rotation driving device, and teeth of the upper worm are meshed with the upper driving teeth.
The control method of the energy-saving rapid temperature test box based on the mixed refrigerant comprises the following steps:
step one: the lifting mechanism is controlled to drive the clamping assembly to move, the limiting rod is arranged between the lower connecting ring and the upper connecting ring, the clamping assembly is controlled to move up and down, the limiting rod drives the lower connecting ring and the upper connecting ring, and the lower connecting ring and the upper connecting ring are far away from the clamping frame, so that the heat-resistant clamping mechanism and the cold-resistant clamping mechanism are both opened;
step two: controlling the clamping assembly to move downwards integrally so that the upper connecting ring is arranged below the limiting rod;
step three: placing the workpiece between all the first clamping rods, and simultaneously controlling the clamping assembly to move upwards to enable the limiting rod to push the upper connecting ring to move downwards relative to the clamping frame so as to enable all the first clamping rods on the heat-resistant clamping mechanism to move towards the workpiece to clamp the workpiece;
step four: continuously controlling the clamping assembly to move upwards to enable the upper connecting ring and the lower connecting ring to pass through the limiting rod, so that the clamping assembly and the workpiece are placed in the hot chamber, and performing high-temperature test on the workpiece;
Step five: after the high-temperature test of the workpiece is finished, the clamping assembly and the workpiece are controlled to move downwards through the conversion hole by the lifting mechanism, the lower connecting ring and the upper connecting ring are contacted with the limiting rod in sequence and are forced to move upwards relative to the clamping frame during the period, so that the workpiece is clamped by the cold-resistant clamping mechanism, and the workpiece is loosened by the heat-resistant clamping mechanism;
step six: and continuously controlling the clamping assembly and the workpiece to move downwards into the cooling chamber, and performing a low-temperature test on the workpiece.
The beneficial effects of the invention are as follows: when the heat-resistant clamping device is used, the lifting mechanism is controlled to drive the clamping assembly to move, the limiting rod is arranged between the lower connecting ring and the upper connecting ring, the clamping assembly is controlled to move up and down, the limiting rod is controlled to stir the lower connecting ring and the upper connecting ring, the lower connecting ring and the upper connecting ring are both far away from the clamping frame, so that the heat-resistant clamping mechanism and the cold-resistant clamping mechanism are both opened, the clamping assembly is controlled to move down integrally, the upper connecting ring is arranged below the limiting rod, a workpiece is arranged between all the first clamping rods, the clamping assembly is controlled to move up, the limiting rod is controlled to push the upper connecting ring to move down relative to the clamping frame, so that all the first clamping rods on the heat-resistant clamping mechanism move towards the workpiece to clamp the workpiece, the clamping assembly is controlled to move up, the upper connecting ring and the lower connecting ring are controlled to cross the limiting rod, the clamping assembly and the workpiece are arranged in a hot chamber, and a high-temperature test is carried out on the workpiece; after the high-temperature test is finished, the clamping assembly and the workpiece are controlled to move downwards through the conversion hole by the lifting mechanism, the lower connecting ring and the upper connecting ring are contacted with the limiting rod in sequence and are forced to move upwards by the clamping frame respectively, so that the workpiece is clamped by the anti-cold clamping mechanism, the workpiece is loosened by the anti-heat clamping mechanism, the clamping assembly and the workpiece are continuously controlled to move downwards into the cold chamber, the workpiece is subjected to the low-temperature test, the workpiece is clamped by the anti-heat clamping mechanism in the hot chamber, and the workpiece is clamped by the anti-cold clamping mechanism in the cold chamber, so that the influence on the clamp is reduced, and the service life of the clamp is prevented from being influenced.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
Fig. 2 is a schematic diagram of a body structure according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view of a separator according to an embodiment of the present invention.
Fig. 4 is a schematic view of the structure of the lifting mechanism and the clamping assembly according to an embodiment of the present invention.
Fig. 5 is a cross-sectional view of an elevator mechanism according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a clamping assembly according to an embodiment of the present invention.
Fig. 7 is a cross-sectional view of a heat resistant clamping mechanism in accordance with an embodiment of the present invention.
Fig. 8 is a cross-sectional view of a cold resistant clamping mechanism in accordance with an embodiment of the present invention.
Fig. 9 is an exploded view of a clamping frame, an upper connecting ring and a lower connecting ring of an embodiment of the present invention.
Fig. 10 is a schematic structural view of a clamping frame according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a pushing mechanism according to an embodiment of the present invention.
Fig. 12 is a schematic structural view of a restraining bar according to an embodiment of the present invention.
Fig. 13 is an exploded view of an upper occlusion mechanism in accordance with an embodiment of the present invention.
Fig. 14 is a schematic structural view of an upper driving mechanism according to an embodiment of the present invention.
Fig. 15 is an exploded view of a lower occlusion mechanism in accordance with an embodiment of the present invention.
Fig. 16 is a schematic structural view of a lower driving mechanism according to an embodiment of the present invention.
Reference numerals:
10. a body; 11. a processing chamber; 111. a hot chamber; 112. a cold room; 12. a partition plate; 121. a conversion hole; 13. an alternating current mechanism; 131. a hot gas delivery path; 132. a cold air delivery path; 14. a shell door; 20. a lifting mechanism; 21. a telescopic driving device; 22. a movable seat; 221. a connecting cylinder; 222. a first rotation driving device; 223. rotating base; 30. a clamping assembly; 31. a clamping frame; 311. an upper friction boss; 312. a lower friction boss; 32. a heat resistant clamping mechanism; 321. a first communication hole; 3211. a first guide groove; 3212. a first adjustment aperture; 322. a first clamping bar; 323. a first push rod; 324. an upper connecting ring; 3241. an upper friction hole; 325. a first sealing plate; 326. a first adjusting lever; 327. a first receiving plate; 328. a first elastic member; 33. a cold-resistant clamping mechanism; 331. a second communication hole; 3311. a second guide groove; 3312. a second adjustment aperture; 332. a second clamping bar; 333. a second push rod; 334. a lower connecting ring; 3341. a lower friction hole; 335. a second sealing plate; 336. a second adjusting lever; 337. a second receiving plate; 338. a second elastic member; 34. a fixing strip; 35. pushing the jacking block; 351. a third inclined surface; 40. a pushing mechanism; 41. a guide hole; 42. a restraining bar; 421. a fourth inclined surface; 422. a fifth inclined surface; 43. a third elastic member; 50. a plugging device; 51. an upper blocking mechanism; 511. an upper driving mechanism; 5111. an upper driving disc; 51111. a chute is arranged; 51112. an upper drive tooth; 5112. a second rotation driving device; 5113. a worm is arranged; 512. an upper chute; 513. an upper slide bar; 514. an upper sealing plate; 52. a lower blocking mechanism; 521. a lower driving mechanism; 5211. a lower driving disc; 52111. a lower chute; 52112. lower drive teeth; 5212. a third rotation driving device; 5213. a lower worm; 522. a lower chute; 523. a lower slide bar; 524. and a lower sealing plate.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 16, the energy-saving rapid temperature test box based on mixed refrigerant of the invention comprises a machine body 10, wherein a hot chamber 111 and a cold chamber 112 are arranged in the machine body 10 so as to simulate a high temperature environment and a low temperature environment, a lifting mechanism 20 is arranged on the machine body 10, a clamping assembly 30 for clamping a workpiece is arranged on the lifting mechanism 20, a heat-resistant clamping mechanism 32 and a cold-resistant clamping mechanism 33 are arranged on a clamping frame 31, a pushing mechanism 40 is arranged on the machine body 10, the lifting mechanism 20 can drive the clamping assembly 30 to move up and down, the pushing mechanism 40 can drive the heat-resistant clamping mechanism 32 and the cold-resistant clamping mechanism 33 to move up and down to switch, and when the clamping assembly 30 moves up into the hot chamber 111, the heat-resistant clamping mechanism 32 clamps the workpiece; the workpiece is clamped by the anti-cold clamping mechanism 33 when the clamping assembly 30 moves down into the cold chamber 112.
Referring to fig. 1 to 3, a processing chamber 11 is provided in a machine body 10, a partition 12 is provided in the processing chamber 11, the partition 12 divides the processing chamber 11 into a hot chamber 111 and a cold chamber 112, the hot chamber 111 is located above the cold chamber 112, a conversion hole 121 is provided in the middle of the partition 12, the top end of the conversion hole 121 is communicated with the hot chamber 111, the bottom end of the conversion hole 121 is communicated with the cold chamber 112, an alternating current mechanism 13 is provided on the machine body 10, the alternating current mechanism 13 can convey hot air in the conversion hole 121 into the hot chamber 111, cool air in the conversion hole 121 is conveyed into the cold chamber 112, a shell door 14 is also provided on the machine body 10, the processing chamber 11 can be opened, and when a clamping assembly 30 moves through the conversion hole 121, a pushing mechanism 40 can drive a heat-resistant clamping mechanism 32 and a cold-resistant clamping mechanism 33 to switch.
With continued reference to fig. 3, the ac mechanism 13 includes a pump disposed on the machine body 10, and a hot air delivery channel 131 and a cold air delivery channel 132 both disposed on the partition 12, an air inlet end of the pump is communicated with the cold chamber 112, an air outlet end of the pump is communicated with one end of the cold air delivery channel 132, the other end of the cold air delivery channel 132 is communicated with the bottom of the conversion hole 121, one end of the hot air delivery channel 131 is communicated with the hot chamber 111, the other end of the hot air delivery channel 131 is communicated with the top of the conversion hole 121, the pump can pump cold air in the cold chamber 112 to the conversion hole 121 through the cold air delivery channel 132, and hot air in the conversion hole 121 is pressed into the hot chamber 111 through the hot air delivery channel 131.
Referring to fig. 1, 4 and 5, the lifting mechanism 20 includes a telescopic driving device 21 fixedly disposed at the bottom of the cooling chamber 112, in this embodiment, the telescopic driving device 21 is a hydraulic cylinder, a movable end of the telescopic driving device 21 is fixedly connected with a movable seat 22, the movable seat 22 includes a connecting cylinder 221 fixedly disposed at the movable end of the telescopic driving device 21, a first rotation driving device 222 is fixedly mounted at the top of the connecting cylinder 221, in this embodiment, the first rotation driving device 222 is a first motor, an output end of the first rotation driving device 222 is fixedly connected with a swivel base 223, the clamping assembly 30 is fixedly mounted on the swivel base 223, the telescopic driving device 21 can stretch to drive the clamping assembly 30 to move up and down through the movable seat 22, and the first rotation driving device 222 can drive the swivel base 223 to rotate to drive the clamping assembly 30.
Referring to fig. 1, 4, and 6 to 10, the clamping assembly 30 includes a clamping frame 31 fixedly disposed on a swivel seat 223 on a movable seat 22, an upper friction boss 311 and a lower friction boss 312 are disposed on the clamping frame 31, a heat-resistant clamping mechanism 32 and a cold-resistant clamping mechanism 33 are disposed on the clamping frame 31, and the heat-resistant clamping mechanism 32 is made of a heat-resistant material and can resist high temperature; the cold-resistant clamping mechanism 33 is made of cold-resistant materials and can resist low temperature;
with continued reference to fig. 6 and 7, the heat-resistant clamping mechanism 32 includes at least four first communication holes 321 formed on the clamping frame 31, all the first communication holes 321 are uniformly distributed around a central axis of the clamping frame 31, a first clamping rod 322 and a first pushing rod 323 are slidably connected in each first communication hole 321, a first transmission medium is arranged between the first clamping rod 322 and the first pushing rod 323, in this embodiment, the first transmission medium is hydraulic oil, the top of all the first pushing rods 323 is fixedly connected with an upper connecting ring 324, an upper friction hole 3241 is formed on the upper connecting ring 324, the upper friction hole 3241 is slidably connected with an upper friction boss 311, and the friction force between the upper friction hole 3241 and the upper friction boss 311 is greater than the gravity of a workpiece.
When the upper connecting ring 324 moves downwards relative to the clamping frame 31, all the first push rods 323 can be driven to move downwards, each first push rod 323 pushes the first clamping rod 322 to move by pressing down the first transmission medium in the first communication hole 321, and all the first clamping rods 322 move outwards of the first communication hole 321 to clamp a workpiece; similarly, when the upper connecting ring 324 moves up relative to the clamping frame 31, all the first push rods 323 can be driven to move up, and each first push rod 323 moves up to pull the first clamping rod 322 to move by extracting the first transmission medium in the first communication hole 321, and all the first clamping rods 322 move into the first communication hole 321 to loosen the workpiece.
With continued reference to fig. 7, the inner wall of each first communication hole 321 is further provided with a first guide groove 3211, the inner wall of the first guide groove 3211 is slidably connected with a first sealing plate 325, the first sealing plate 325 can seal the first communication holes 321 to prevent heat exchange between the inside of the first communication holes 321 and the outside, each first sealing plate 325 is provided with a first inclined surface, and when the first clamping rod 322 moves, the first inclined surface on the first sealing plate 325 can be pushed to force the first sealing plate 325 to retract into the first guide groove 3211.
With continued reference to fig. 7, a first adjusting hole 3212 is further formed in each first communicating hole 321, the inner wall of the first adjusting hole 3212 is slidably connected with a first adjusting rod 326, a first bearing plate 327 is fixedly arranged on the first adjusting rod 326, and a first elastic member 328 is fixedly connected between the first bearing plate 327 and the clamping frame 31, in this embodiment, the first elastic member 328 is an elastic rubber strip; all the first bearing plates 327 are controlled to move downwards one by one, the first bearing plates 327 move downwards to drive the first adjusting rods 326 to move downwards, the first adjusting rods 326 move downwards to drive the first clamping rods 322 to move through the first adjusting holes 3212 and the first transmission medium in the first communication holes 321, and the first clamping rods 322 are separated from the workpiece, so that all the first clamping rods 322 relax the workpiece one by one, and dead angles of the first clamping rods 322 on the workpiece can be eliminated.
With continued reference to fig. 6 and 8, the cold-resistant clamping mechanism 33 includes at least four second communication holes 331 formed on the clamping frame 31, all the second communication holes 331 are uniformly distributed around the central axis of the clamping frame 31, a second clamping rod 332 and a second pushing rod 333 are slidably connected in each second communication hole 331, a second transmission medium is arranged between the second clamping rod 332 and the second pushing rod 333, in this embodiment, the second transmission medium is hydraulic oil, the bottoms of all the second pushing rods 333 are fixedly connected with a lower connecting ring 334, lower friction holes 3341 are formed on the lower connecting ring 334, the lower friction holes 3341 are slidably connected with the lower friction bosses 312, and the friction force between the lower friction holes 3341 and the lower friction bosses 312 is greater than the sum of the weights of the workpiece, the lower connecting ring 334 and all the second pushing rods 333.
When the lower connecting ring 334 moves upwards relative to the clamping frame 31, all the second push rods 333 can be driven to move upwards, each second push rod 333 pushes the second clamping rod 332 to move by pushing the second transmission medium in the second communication hole 331, and all the second clamping rods 332 move outwards of the second communication hole 331 to clamp a workpiece; similarly, when the lower connecting ring 334 moves down relative to the clamping frame 31, all the second push rods 333 can be driven to move down, and each second push rod 333 moves down to pull the second clamping rod 332 to move by extracting the second transmission medium in the second communication hole 331, and all the second clamping rods 332 move into the second communication hole 331 to release the workpiece.
With continued reference to fig. 8, the inner wall of each second communication hole 331 is further provided with a second guide slot 3311, the inner wall of the second guide slot 3311 is slidably connected with a second sealing plate 335, the second sealing plate 335 can seal the second communication holes 331 so as to prevent the interior of the second communication holes 331 from exchanging heat with the outside, each second sealing plate 335 is provided with a second inclined plane, and when the second clamping rod 332 moves, the second inclined planes on the second sealing plates 335 can be pushed to force the second sealing plates 335 to retract into the second guide slots 3311.
With continued reference to fig. 8, a second adjusting hole 3312 is further formed in each second communicating hole 331, the inner wall of the second adjusting hole 3312 is slidably connected with a second adjusting rod 336, a second bearing plate 337 is fixedly arranged on the second adjusting rod 336, the second bearing plate 337 and the first bearing plate 327 are located on the same plane, and a second elastic piece 338 is fixedly connected between the second bearing plate 337 and the clamping frame 31, in this embodiment, the second elastic piece 338 is an elastic rubber strip; all the second bearing plates 337 are controlled to move downwards one by one, the second bearing plates 337 move downwards to drive the second adjusting rods 336 to move downwards, the second adjusting rods 336 move downwards to drive the second clamping rods 332 to move through the second transmission media in the second adjusting holes 3312 and the second communication holes 331, and the second clamping rods 332 are separated from the workpieces, so that all the second clamping rods 332 relax the workpieces one by one, and dead angles of the second clamping rods 332 on the workpieces can be eliminated.
With continued reference to fig. 10, the clamping assembly 30 further includes a fixing strip 34 fixedly disposed on the connecting cylinder 221, the fixing strip 34 is fixedly connected with a pushing block 35 corresponding to the first bearing plate 327 and the second bearing plate 337, a third inclined plane 351 is disposed on the pushing block 35, when the clamping frame 31 rotates, the first bearing plate 327 and the second bearing plate 337 can slide along the third inclined plane 351 on the pushing block 35 to force the first bearing plate 327 and the second bearing plate 337 to automatically move downwards, and when the first bearing plate 327 leaves the pushing block 35, the first elastic member 328 pulls the first bearing plate 327 to automatically move upwards to reset; when the second bearing plate 337 leaves the pushing block 35, the second elastic member 338 pulls the second bearing plate 337 to automatically move upwards for resetting.
Referring to fig. 11 and 12, the pushing mechanism 40 includes at least two guide holes 41 formed on the inner wall of the conversion hole 121, all the guide holes 41 are uniformly distributed around the central axis of the conversion hole 121, in this embodiment, the number of the guide holes 41 is two, the inner wall of each guide hole 41 is slidably connected with a limiting rod 42 in a single degree of freedom, a third elastic member 43 is fixedly arranged between the limiting rod 42 and the inner wall of the guide hole 41, in this embodiment, the third elastic member 43 is a spring, and a fourth inclined surface 421 and a fifth inclined surface 422 are arranged on the limiting rod 42;
When the clamping assembly 30 continues to move downwards, the lower connecting ring 334 contacts the fourth inclined surface 421 on the limiting rod 42, as the clamping assembly 30 moves downwards, the fourth inclined surface 421 on the limiting rod 42 pushes the lower connecting ring 334 to move upwards relative to the clamping frame 31 until the lower connecting ring 334 abuts against the clamping frame 31, as the clamping assembly 30 continues to move downwards, the lower connecting ring 334 pushes the limiting rod 42 to overcome the elastic force of the third elastic piece 43 and retract into the guide hole 41 by abutting against the fourth inclined surface 421, so that the lower connecting ring 334 passes over the limiting rod 42, as the clamping assembly 30 continues to move downwards, the upper connecting ring 324 contacts the fourth inclined surface 421 on the limiting rod 42, as the clamping assembly 30 moves downwards, the fourth inclined surface 421 on the limiting rod 42 pushes the upper connecting ring 324 to move upwards relative to the clamping frame 31 until the upper connecting ring 324 reaches a limit, and as the clamping assembly 30 continues to move downwards, the upper connecting ring 324 pushes the limiting rod 42 to overcome the elastic force of the third elastic piece 43 and retract into the guide hole 41 by abutting against the fourth inclined surface 421, so that the upper connecting ring 324 passes over the limiting rod 42; similarly, as the clamp assembly 30 continues to move upward, the upper and lower link rings 324, 334 sequentially contact the fifth ramp 422 on the restraining bar 42, causing the upper and lower link rings 324, 334 to move downward relative to the clamp frame 31 and over the restraining bar 42.
Referring to fig. 1, 11, and 13 to 16, the plugging device 50 further includes a plugging device 50, where the plugging device 50 includes an upper plugging mechanism 51 disposed in the hot chamber 111 and a lower plugging mechanism 52 disposed in the cold chamber 112, the upper plugging mechanism 51 is used for sealing the top end of the conversion hole 121, and the lower plugging mechanism 52 is used for sealing the bottom end of the conversion hole 121.
With continued reference to fig. 11 and 13, the upper plugging mechanism 51 includes an upper driving mechanism 511 and four upper sliding grooves 512 all formed on the upper surface of the partition board 12, the four upper sliding grooves 512 are uniformly distributed around the central axis of the conversion hole 121, the four upper sliding grooves 512 are all connected with upper sliding rods 513 in a sliding manner, each upper sliding rod 513 is fixedly connected with an upper sealing plate 514, the lower surface of each upper sealing plate 514 is in sliding fit with the upper surface of the partition board 12, and when the four upper sliding rods 513 respectively move along the four upper sliding grooves 512 towards the direction of the conversion hole 121, the four upper sealing plates 514 can be driven to be mutually close to each other and spliced into a seamless plate body so as to seal the top end of the conversion hole 121, and the upper driving mechanism 511 can drive the four upper sliding rods 513 to respectively move along the four upper sliding grooves 512 towards the direction of the conversion hole 121;
with continued reference to fig. 13 and 14, the upper driving mechanism 511 includes an upper driving disc 5111 and a second rotation driving device 5112 fixedly disposed on the machine body 10, where the second rotation driving device 5112 is a second motor, four upper inclined slots 51111 are formed on the upper driving disc 5111, the four upper inclined slots 51111 are respectively connected with the four upper sliding rods 513 in a sliding manner, upper driving teeth 51112 are disposed at edges of the upper driving disc 5111, an upper worm 5113 is fixedly connected to an output end of the second rotation driving device 5112, teeth of the upper worm 5113 are meshed with upper driving teeth 51112 on the upper driving disc 5111, the second rotation driving device 5112 can drive the upper worm 5113 to rotate, the upper worm 5113 can be meshed with the upper driving teeth 51112 to drive the upper driving disc 5111 to rotate, and the upper driving disc 5111 can be forced to respectively slide along the four upper sliding slots 512 by sliding connection of the four upper inclined slots 51111 with the four upper sliding rods 513.
With continued reference to fig. 11 and 15, the lower plugging mechanism 52 includes a lower driving mechanism 521 and four lower sliding grooves 522 formed on the lower surface of the partition plate 12, the four lower sliding grooves 522 are uniformly distributed around the central axis of the conversion hole 121, the four lower sliding grooves 522 are all connected with lower sliding rods 523 in a sliding manner, each lower sliding rod 523 is fixedly connected with a lower sealing plate 524, the upper surface of each lower sealing plate 524 is in sliding fit with the lower surface of the partition plate 12, when the four lower sliding rods 523 respectively move along the four lower sliding grooves 522 towards the direction of the conversion hole 121, the four lower sealing plates 524 can be driven to approach each other to splice into an annular plate body, the inner side of the annular plate body can be fit with the outer surface of the connecting cylinder 221 so as to seal the bottom end of the conversion hole 121, and the lower driving mechanism 521 can drive the four lower sliding rods 523 to respectively move along the four lower sliding grooves 522 towards the direction of the conversion hole 121;
with continued reference to fig. 15 and 16, the lower driving mechanism 521 includes a lower driving disk 5211 and a third rotation driving device 5212 fixedly disposed on the machine body 10, where the third rotation driving device 5212 is a third motor, four lower inclined slots 52111 are formed on the lower driving disk 5211, the four lower inclined slots 52111 are respectively connected with the four lower sliding rods 523 in a sliding manner, lower driving teeth 52112 are disposed on the edge of the lower driving disk 5211, a lower worm 5213 is fixedly connected to the output end of the third rotation driving device 5212, the teeth of the lower worm 5213 are meshed with the lower driving teeth 52112 on the lower driving disk 5211, the third rotation driving device 5212 can drive the lower worm 5213 to rotate, the lower worm 5213 can drive the lower driving disk 5211 to rotate through the meshing of the lower driving teeth 52112, and the lower driving disk 5211 can rotate through the sliding connection of the four lower inclined slots 52111 with the four lower sliding rods 523 respectively to force the four lower sliding rods 523 to slide along the four lower sliding grooves 522 respectively.
When in use, the lifting mechanism 20 is controlled to drive the clamping assembly 30 to move, the limiting rod 42 is arranged between the lower connecting ring 334 and the upper connecting ring 324, the clamping assembly 30 is controlled to move up and down, the limiting rod 42 is controlled to stir the lower connecting ring 334 and the upper connecting ring 324, the lower connecting ring 334 and the upper connecting ring 324 are far away from the clamping frame 31, so that the heat-resistant clamping mechanism 32 and the cold-resistant clamping mechanism 33 are opened, and the clamping assembly 30 is controlled to move down integrally, so that the upper connecting ring 324 is arranged below the limiting rod 42;
placing the workpiece between all the first clamping bars 322 and all the second clamping bars 332, simultaneously controlling the clamping assembly 30 to move upwards, enabling the upper connecting ring 324 to contact the limiting bars 42, enabling the limiting bars 42 to push the upper connecting ring 324 to move downwards relative to the clamping frame 31, enabling the upper connecting ring 324 to drive all the first push rods 323 to move downwards relatively, enabling the first push rods 323 to push the first clamping bars 322 to move relatively through the first transmission medium in the first communication holes 321, enabling all the first clamping bars 322 to move towards the workpiece to clamp the workpiece, continuously controlling the clamping assembly 30 to move upwards, enabling the upper connecting ring 324 and the lower connecting ring 334 to pass through the limiting bars 42, enabling the clamping assembly 30 and the workpiece to be placed in the hot chamber 111, controlling the lower driving mechanism 521 on the lower sealing mechanism 52, enabling the lower driving mechanism 521 to drive the four lower sealing plates 524 to be close to each other and spliced into an annular plate body which is attached to the connecting cylinder 221, enabling the connecting cylinder 221, the partition plate 12 and the four lower sealing plates 524 to seal the cold chamber 112 to isolate the workpiece from high temperature test;
When a low-temperature test is required to be performed on a workpiece, the clamping assembly 30 and the workpiece are controlled to move downwards into the conversion hole 121, then the upper driving mechanism 511 is controlled to drive the four upper sealing plates 514 to be close to each other so as to splice a seamless plate body, the connecting cylinder 221, the conversion hole 121, the four upper sealing plates 514 and the four lower sealing plates 524 enclose a closed space, then the air pump is controlled to pump cold air in the cold chamber 112 to the conversion hole 121 through the cold air conveying channel 132, hot air in the conversion hole 121 is pressed into the hot chamber 111 through the hot air conveying channel 131, finally the lower driving mechanism 521 is controlled to drive the four lower sealing plates 524 to be separated from each other so as to open the conversion hole 121, during the period, the lower connecting ring 334 and the upper connecting ring 324 are sequentially contacted with the limiting rods 42 and force the lower connecting ring 334 and the upper connecting ring 324 to move upwards relative to the clamping frame 31, so that all the second clamping rods 332 clamp the workpiece, and all the first clamping rods 322 are released away from the workpiece, and the heat-resistant clamping mechanism 32 are switched into the anti-cold clamping mechanism 33 to clamp the workpiece;
the control clamp assembly 30 and the workpiece are moved down into the cold chamber 112 to perform a low temperature test on the workpiece.
The control method of the energy-saving rapid temperature test box based on the mixed refrigerant comprises the following steps:
Step one: the lifting mechanism 20 is controlled to drive the clamping assembly 30 to move, the limiting rod 42 is arranged between the lower connecting ring 334 and the upper connecting ring 324, and then the clamping assembly 30 is controlled to move up and down, so that the limiting rod 42 drives the lower connecting ring 334 and the upper connecting ring 324, and the lower connecting ring 334 and the upper connecting ring 324 are far away from the clamping frame 31, so that the heat-resistant clamping mechanism 32 and the cold-resistant clamping mechanism 33 are both opened;
step two: the clamping assembly 30 is controlled to move downward as a whole such that the upper attachment ring 324 is positioned below the restraining bar 42;
step three: placing the workpiece between all the first clamping bars 322, controlling the clamping assembly 30 to move upwards, enabling the upper connecting ring 324 to contact the limiting rod 42, enabling the limiting rod 42 to push the upper connecting ring 324 to move downwards relative to the clamping frame 31, enabling the upper connecting ring 324 to drive all the first push rods 323 to move downwards relatively, enabling the first push rods 323 to push the first clamping bars 322 to move relatively by extruding the first transmission medium in the first communication holes 321, and enabling all the first clamping bars 322 to move towards the workpiece to clamp the workpiece;
step four: continuing to control the clamp assembly 30 to move upward such that both the upper link ring 324 and the lower link ring 334 pass over the restraining bar 42, placing the clamp assembly 30 with the workpiece in the hot chamber 111;
step five: then, the lower driving mechanism 521 on the lower plugging mechanism 52 is controlled, so that the lower driving mechanism 521 drives the four lower sealing plates 524 to mutually approach and splice into an annular plate body attached to the connecting cylinder 221, and the connecting cylinder 221, the partition plate 12 and the four lower sealing plates 524 are sealed so as to isolate the cold chamber 112 and perform a high-temperature test on a workpiece;
Step six: after the high-temperature test of the workpiece is finished, the clamping assembly 30 and the workpiece are controlled to move downwards into the conversion hole 121 through the lifting mechanism 20, then the upper driving mechanism 511 is controlled to drive the four upper sealing plates 514 to be close to each other so as to splice a seamless plate body, the connecting cylinder 221, the conversion hole 121, the four upper sealing plates 514 and the four lower sealing plates 524 are enclosed into a closed space, meanwhile, the lower connecting ring 334 and the upper connecting ring 324 are sequentially contacted with the limiting rod 42 and force the lower connecting ring 334 and the upper connecting ring 324 to move upwards relative to the clamping frame 31, so that all the second clamping rods 332 clamp the workpiece, all the first clamping rods 322 are released far away from the workpiece, and the heat-resistant clamping mechanism 32 is switched to the cold-resistant clamping mechanism 33 to clamp the workpiece;
step seven: the air pump is controlled to pump the cold air in the cold chamber 112 to the conversion hole 121 through the cold air conveying channel 132, and the hot air in the conversion hole 121 is pressed into the hot chamber 111 through the hot air conveying channel 131;
step eight: the lower driving mechanism 521 is controlled to drive the four lower sealing plates 524 to be away from each other so as to open the conversion hole 121, and then the clamping assembly 30 and the workpiece are controlled to move downwards into the cold chamber 112 so as to perform a low-temperature test on the workpiece;
step nine: after the low-temperature test of the workpiece is completed, the upper driving mechanism 511 is controlled to drive the four upper sealing plates 514 to be far away from each other to open the conversion hole 121, and then the clamping assembly 30 and the workpiece are controlled to move upwards into the conversion hole 121 through the lifting mechanism 20;
Step ten: the workpiece is held, the clamping assembly 30 is controlled to move up and down, the limiting rod 42 drives the lower connecting ring 334 and the upper connecting ring 324, the lower connecting ring 334 and the upper connecting ring 324 are far away from the clamping frame 31, the heat-resistant clamping mechanism 32 and the cold-resistant clamping mechanism 33 are opened, and finally the workpiece is taken out.
Claims (10)
1. Energy-saving rapid temperature test box based on mixed refrigerant, including organism (10), the inside of organism (10) is provided with treatment chamber (11), its characterized in that, be provided with baffle (12) in treatment chamber (11), baffle (12) will treatment chamber (11) are divided into hot chamber (111) and cold chamber (112), the middle part of baffle (12) is provided with conversion hole (121), still includes:
a lifting mechanism (20) arranged on the cold chamber (112);
the clamping assembly (30) comprises a clamping frame (31) fixedly arranged at the movable end of the lifting mechanism (20), a heat-resistant clamping mechanism (32) and a cold-resistant clamping mechanism (33) are arranged on the clamping frame (31), the heat-resistant clamping mechanism (32) comprises at least four first communication holes (321) formed in the clamping frame (31), a first clamping rod (322) and a first push rod (323) are slidably arranged in each first communication hole (321), a first transmission medium is arranged between the first clamping rod (322) and the first push rod (323), and an upper connecting ring (324) is fixedly arranged at the top of each first push rod (323); the cold-resistant clamping mechanism (33) comprises at least four second communication holes (331) formed in the clamping frame (31), a second clamping rod (332) and a second push rod (333) are slidably arranged in each second communication hole (331), a second transmission medium is arranged between the second clamping rod (332) and the second push rod (333), and a lower connecting ring (334) is fixedly arranged at the bottom of all the second push rods (333);
The pushing mechanism (40) comprises at least two guide holes (41) formed in the inner wall of the conversion hole (121), a limiting rod (42) is arranged on the inner wall of each guide hole (41) in a single-degree-of-freedom sliding mode, a third elastic piece (43) is fixedly arranged between the limiting rod (42) and the inner wall of each guide hole (41), and a fourth inclined surface (421) and a fifth inclined surface (422) are arranged on the limiting rod (42).
2. The mixed refrigerant-based energy-saving rapid temperature test chamber according to claim 1, wherein an alternating current mechanism (13) is further arranged on the machine body (10);
the alternating current mechanism (13) comprises an air pump arranged on the machine body (10) and a hot air conveying channel (131) and a cold air conveying channel (132) which are all arranged on the partition plate (12), the air inlet end of the air pump is communicated with the inside of the cold chamber (112), the air outlet end of the air pump is communicated with one end of the cold air conveying channel (132), the other end of the cold air conveying channel (132) is communicated with the bottom of the conversion hole (121), one end of the hot air conveying channel (131) is communicated with the inside of the hot chamber (111), and the other end of the hot air conveying channel (131) is communicated with the top of the conversion hole (121).
3. The mixed refrigerant based energy-saving rapid temperature test chamber according to claim 1, wherein the lifting mechanism (20) comprises a telescopic driving device (21) fixedly arranged at the bottom of the cold chamber (112), a movable end of the telescopic driving device (21) is fixedly provided with a movable seat (22), and the clamping assembly (30) is arranged on the movable seat (22).
4. A mixed refrigerant based energy efficient rapid thermal testing chamber according to claim 3, wherein the movable seat (22) comprises a connecting cylinder (221) fixedly arranged at the movable end of the telescopic driving device (21), a first rotation driving device (222) is fixedly arranged at the top of the connecting cylinder (221), a swivel base (223) is fixedly arranged at the output end of the first rotation driving device (222), and the clamping assembly (30) is fixedly arranged on the swivel base (223).
5. The energy-saving rapid temperature test chamber based on mixed refrigerant according to claim 1, wherein an upper friction boss (311) and a lower friction boss (312) are arranged on the clamping frame (31), an upper friction hole (3241) is formed in the upper connecting ring (324), the upper friction hole (3241) is in sliding connection with the upper friction boss (311), and the friction force between the upper friction hole (3241) and the upper friction boss (311) is larger than the gravity of a workpiece; the lower connecting ring (334) is provided with a lower friction hole (3341), the lower friction hole (3341) is in sliding connection with the lower friction boss (312), and the friction force between the lower friction hole (3341) and the lower friction boss (312) is greater than the sum of the weights of the workpiece, the lower connecting ring (334) and all the second push rods (333).
6. The mixed refrigerant-based energy-saving rapid temperature test chamber according to claim 1, wherein a first guide groove (3211) is further formed in the inner wall of each first communication hole (321), a first sealing plate (325) is slidably arranged on the inner wall of each first guide groove (3211), the first sealing plates (325) can seal the first communication holes (321), a first inclined surface is arranged on each first sealing plate (325), and the first inclined surfaces can be pushed when the first clamping rods (322) move so as to force the first sealing plates (325) to retract into the first guide grooves (3211);
every second guide way (3311) has still been seted up to the inner wall of second intercommunicating pore (331), the inner wall slip of second guide way (3311) is provided with second shrouding (335), second shrouding (335) can be right second intercommunicating pore (331) shutoff, every all be provided with the second inclined plane on second shrouding (335), can push when second clamp lever (332) remove the second inclined plane, in order to compel second shrouding (335) shrink in second guide way (3311).
7. The energy-saving rapid temperature test chamber based on mixed refrigerant according to claim 4, wherein a first adjusting hole (3212) is further formed in each first communicating hole (321), a first adjusting rod (326) is slidably arranged on the inner wall of the first adjusting hole (3212), a first bearing plate (327) is fixedly arranged on the first adjusting rod (326), and a first elastic piece (328) is fixedly arranged between each first bearing plate (327) and the clamping frame (31);
A second adjusting hole (3312) is further formed in each second communicating hole (331), a second adjusting rod (336) is slidably arranged on the inner wall of each second adjusting hole (3312), a second bearing plate (337) is fixedly arranged on each second adjusting rod (336), the second bearing plates (337) and the first bearing plates (327) are located on the same plane, and a second elastic piece (338) is fixedly arranged between each second bearing plate (337) and the clamping frame (31);
the clamping assembly (30) further comprises a fixing strip (34) fixedly arranged on the connecting cylinder (221), an ejection block (35) corresponding to the first bearing plate (327) and the second bearing plate (337) is fixedly arranged on the fixing strip (34), a third inclined surface (351) is arranged on the ejection block (35), and when the clamping frame (31) rotates, the first bearing plate (327) and the second bearing plate (337) can slide along the third inclined surface (351) so as to force the first bearing plate (327) and the second bearing plate (337) to move downwards.
8. The mixed refrigerant based energy efficient rapid thermal testing chamber of claim 4, further comprising a plugging device (50), the plugging device (50) comprising an upper plugging mechanism (51) disposed within the hot chamber (111) and a lower plugging mechanism (52) disposed within the cold chamber (112);
The upper sealing mechanism (51) comprises an upper driving mechanism (511) arranged on the machine body (10) and four upper sliding grooves (512) formed in the upper surface of the partition board (12), upper sliding rods (513) are arranged on the four upper sliding grooves (512) in a sliding mode, upper sealing plates (514) are fixedly arranged on each upper sliding rod (513), the lower surface of each upper sealing plate (514) is in sliding fit with the upper surface of the partition board (12), the four upper sealing plates (514) are mutually close to each other and can be spliced into a seamless plate body, and the upper driving mechanism (511) can drive the four upper sliding rods (513) to move along the four upper sliding grooves (512) respectively;
the lower blocking mechanism (52) comprises a lower driving mechanism (521) arranged on the machine body (10) and four lower sliding grooves (522) formed in the lower surface of the partition plate (12), lower sliding rods (523) are arranged on the four lower sliding grooves (522) in a sliding mode, lower sealing plates (524) are fixedly arranged on the lower sliding rods (523) respectively, the upper surfaces of the lower sealing plates (524) are in sliding fit with the lower surface of the partition plate (12), the four lower sealing plates (524) are close to each other and can be spliced into an annular plate body, the inner sides of the annular plate bodies can be fit with the outer surfaces of the connecting cylinders (221), and the lower driving mechanism (521) can drive the four lower sliding rods (523) to move along the four lower sliding grooves (522) respectively.
9. The energy-saving rapid temperature test chamber based on mixed refrigerant according to claim 8, wherein the upper driving mechanism (511) comprises an upper driving disc (5111) and a second rotation driving device (5112) fixedly arranged on the machine body (10), four upper inclined grooves (51111) are formed in the upper driving disc (5111), the four upper inclined grooves (51111) are respectively and slidably connected with the four upper sliding rods (513), upper driving teeth (51112) are arranged at the edge of the upper driving disc (5111), an upper worm (5113) is fixedly arranged at the output end of the second rotation driving device (5112), and the teeth of the upper worm (5113) are meshed with the upper driving teeth (51112).
10. A control method of an energy-saving rapid temperature test chamber based on a mixed refrigerant according to any one of claims 1 to 9, comprising the steps of:
step one: controlling the lifting mechanism (20) to drive the clamping assembly (30) to move, enabling the limiting rod (42) to be arranged between the lower connecting ring (334) and the upper connecting ring (324), and controlling the clamping assembly (30) to move up and down, enabling the limiting rod (42) to toggle the lower connecting ring (334) and the upper connecting ring (324), enabling the lower connecting ring (334) and the upper connecting ring (324) to be far away from the clamping frame (31), so that the heat-resistant clamping mechanism (32) and the cold-resistant clamping mechanism (33) are opened;
Step two: controlling the clamping assembly (30) to move downward as a whole so that the upper connecting ring (324) is arranged below the limiting rod (42);
step three: placing the workpiece between all the first clamping rods (322), and simultaneously controlling the clamping assembly (30) to move upwards, so that the limiting rod (42) pushes the upper connecting ring (324) to move downwards relative to the clamping frame (31), and all the first clamping rods (322) on the heat-resistant clamping mechanism (32) move towards the workpiece to clamp the workpiece;
step four: continuing to control the clamping assembly (30) to move upwards so that the upper connecting ring (324) and the lower connecting ring (334) both pass through the limiting rod (42), and placing the clamping assembly (30) together with a workpiece in the hot chamber (111) to perform high-temperature test on the workpiece;
step five: after the high-temperature test of the workpiece is finished, the clamping assembly (30) and the workpiece are controlled to move downwards through the conversion hole (121) by the lifting mechanism (20), the lower connecting ring (334) and the upper connecting ring (324) are contacted with the limiting rod (42) in sequence during the period, the lower connecting ring (334) and the upper connecting ring (324) are forced to move upwards relative to the clamping frame (31), so that the cold-resistant clamping mechanism (33) clamps the workpiece, and the heat-resistant clamping mechanism (32) loosens the workpiece;
Step six: and continuously controlling the clamping assembly (30) and the workpiece to move downwards into the cold chamber (112), and performing a low-temperature test on the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410137201.XA CN117664776B (en) | 2024-02-01 | 2024-02-01 | Energy-saving rapid temperature test box based on mixed refrigerant and control method |
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| CN202410137201.XA CN117664776B (en) | 2024-02-01 | 2024-02-01 | Energy-saving rapid temperature test box based on mixed refrigerant and control method |
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| CN117664776B CN117664776B (en) | 2024-04-30 |
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| JP2014139558A (en) * | 2012-12-21 | 2014-07-31 | Kotohira Kogyo Kk | Heating test device |
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| CN117664776B (en) | 2024-04-30 |
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