CN115541129B - New energy automobile motor housing gas tightness testing arrangement - Google Patents
New energy automobile motor housing gas tightness testing arrangement Download PDFInfo
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- CN115541129B CN115541129B CN202210365267.5A CN202210365267A CN115541129B CN 115541129 B CN115541129 B CN 115541129B CN 202210365267 A CN202210365267 A CN 202210365267A CN 115541129 B CN115541129 B CN 115541129B
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 102
- 238000001514 detection method Methods 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000006424 Flood reaction Methods 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 19
- 230000009471 action Effects 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000003749 cleanliness Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/10—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for containers, e.g. radiators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the technical field of testing devices, in particular to a new energy automobile motor shell air tightness testing device which comprises a workbench; the top of the workbench is connected with a first push rod and a pressing piece, the tops of the workbench at two sides of the pressing piece are connected with a supporting plate, one side, close to each other, of the supporting plate is connected with a side pressing piece through a second push rod, the bottom surface of the workbench corresponding to the bottom end of the pressing piece is connected with a third push rod and a detection cavity, the bottom end of the inside of the detection cavity is connected with a sliding cavity, the inside of the sliding cavity is connected with a sliding plate in a sliding mode, and the top end of the sliding plate is connected with an inflatable base; if the product is unqualified in airtight, the third push rod pushes the detection cavity to move upwards, so that the detection liquid pre-filled in the detection cavity floods the product, and at the moment, the leakage point position of the product can be rapidly and accurately judged by observing bubbles generated by air leakage on the surface of the product, thereby reducing the labor burden of staff and improving the detection efficiency of the motor shell.
Description
Technical Field
The invention belongs to the technical field of testing devices, and particularly relates to a new energy automobile motor shell air tightness testing device.
Background
Because the air tightness requirement of the automobile motor shell is very high, the test of the air tightness performance of the automobile motor shell is a necessary test item in the production of the automobile motor shell, and can effectively check the quality of the automobile motor shell and determine the qualification rate of products; the motor casing is usually used for testing the air tightness of the pipe fitting by adopting a method of introducing air.
However, when the air tightness testing device in the prior art tests the motor shell, whether the motor shell leaks air or not is judged only by inflating and by changing the numerical value of air pressure, but the air leakage position of a workpiece cannot be accurately judged, and a worker is often required to manually detect leakage points, so that the motor shell is time-consuming and labor-consuming.
Therefore, the invention provides a new energy automobile motor shell air tightness testing device.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a new energy automobile motor shell air tightness testing device, which comprises a workbench; the top of the workbench is connected with a first push rod, the bottom end of the first push rod is connected with a pressing piece, the top of the workbench corresponding to two sides of the pressing piece is connected with a supporting plate, one side of the supporting plate, which is close to each other, is connected with a side pressing piece through a second push rod, the bottom surface of the workbench corresponding to the bottom end of the pressing piece is connected with a third push rod, the top end of the third push rod is connected with a detection cavity, the inner bottom end of the detection cavity is connected with a sliding cavity, the inner bottom end of the sliding cavity is connected with a sliding plate through an elastic piece in a sliding manner, the top end of the sliding plate is connected with an inflation base, and an inflation detection assembly is arranged on the inflation base; when the air tightness testing device in the prior art tests the motor shell, whether the motor shell leaks air or not is judged only by inflating and by the numerical change of air pressure, but the air leakage position of a workpiece cannot be accurately judged, and a worker is often required to manually detect leakage points, so that the motor shell is time-consuming and labor-consuming; when the testing device is used, the inflatable base is positioned at the top of the detection cavity, a product to be tested is placed on the inflatable base, the pressing piece and the pressure measuring piece are driven to move towards the product through the first push rod and the second push rod respectively, the product is positioned and fixed under the action of the inflatable base supported by the elastic piece, then the inflatable detection assembly works, the air tightness of the product is detected through inflating the inside of the product and detecting the air pressure, if the air tightness of the product is unqualified, the third push rod pushes the detection cavity to move upwards, so that the sliding cavity slides upwards relative to the sliding plate until detection liquid filled in the detection cavity submerges the product in advance, and then workers can quickly and accurately judge the leakage point position of the product by observing bubbles generated by air leakage on the surface of the product without manually carrying out time-consuming and labor-consuming leak detection on the product, the labor burden of the workers is reduced, and the detection efficiency of the motor shell is improved.
Preferably, the bottom end of the supporting plate is provided with a limiting plate, one surface of the limiting plate, which is close to the side wall of the detection cavity, is connected with a pressing bag, the pressing bag is connected with an air outlet pipe, the other end of the air outlet pipe extends to the pressing piece, the air outlet of the air outlet pipe faces the bottom end, and a pressing block is arranged at the position of the inner wall of the detection cavity, which corresponds to the pressing bag; after the product is detected out of the position of the leakage point, the third push rod drives the detection cavity to move downwards, so that the product is separated from the detection liquid, and meanwhile, the pressing block can be driven to squeeze the pressing bag when the detection cavity moves downwards, so that gas in the pressing bag is sprayed to the surface of the product through the gas outlet pipe, residual liquid on the surface of the pressing bag can be blown off, the dryness and the cleanliness of the product are improved, and the cleaning of the surface of the pressing bag by manpower is reduced.
Preferably, a chute is arranged at the position of the inner wall of the sliding cavity corresponding to the pressing block, the pressing block is connected with the chute in a sliding way, and a spring is connected between the pressing block and the inner end of the chute; when the detection cavity drives the pressing block to move downwards, the pressing block is always contracted in the sliding groove under the supporting pressure of the supporting plate until the pressing block completely moves without being limited by the supporting plate, at the moment, the pressing block can instantly pop out of the sliding groove under the action of the spring and instantly extrude gas in the pressing bag, and compared with the detection cavity which drives the pressing block to slowly extrude the pressing bag, the air injection rate of the air outlet pipe is improved, and therefore the cleaning effect of the surface of a product is improved.
Preferably, the side wall of the pressing block is attached to the inner wall of the sliding groove, the bottom end of the detection cavity is provided with a telescopic bag, and the telescopic bag is communicated with the inner end of the sliding groove through a guide pipe; the detection cavity can extrude the telescopic bag when resetting downwards, so that gas in the telescopic bag flows into the sliding groove, after the pressing block is not limited by the supporting plate, the pressing block can be ejected out more forcefully under the action of air pressure at the inner end of the sliding groove, and larger acting force is applied to the pressing bag, so that the air injection cleaning effect of the air outlet pipe is further improved.
Preferably, the side wall of the pressing piece is connected with an arc-shaped sliding rod, the sliding rod is connected with a sliding block in a sliding manner, an elastic telescopic sleeve is connected between the sliding block and one end of the sliding rod, an air outlet groove connected with the air outlet end of the air outlet pipe is formed in the bottom surface of the sliding block, the side wall of the sliding block is connected with a nozzle communicated with the air outlet groove, and the air injection direction of the nozzle is tangential to the sliding track of the sliding block on the sliding rod; when the gas in the outlet duct flows into the inside of the sliding block, a part of gas is sprayed out of the gas outlet groove and cleans residual liquid on the surface of a product, and meanwhile, after a part of gas is sprayed out of the nozzle, the sliding block can be applied with acting force of arc-shaped movement on the sliding rod, so that the gas outlet groove can jet gas on the surface of the product in a rotating mode, and the surface of the product can be cleaned more fully and uniformly.
Preferably, the bottom end of the air outlet groove is connected with a freely telescopic corrugated sleeve, and a plurality of nozzles are formed in one side, close to the lower pressing piece, of the corrugated sleeve from top to bottom; after the corrugated sleeve is filled with gas flowing in the sliding block, the gas can be inflated and stretched to a position closer to the surface of a product, and at the moment, a part of gas can be sprayed out from each opened nozzle, so that the gas can be positioned on the surface of the product at a shorter distance, and the cleaning effect of the product is further improved.
Preferably, the sliding plate is in seamless joint with the side wall of the sliding cavity, the inner end of the sliding cavity is communicated with the pressing bag through a connecting pipe, a first one-way valve for enabling gas in the sliding cavity to flow into the pressing bag is arranged on the connecting pipe, a second one-way valve for enabling the gas in the pressing bag to flow out is arranged on the air outlet pipe, the inner end of the sliding cavity is connected with an air inlet pipe communicated with the outside, a third one-way valve for enabling the external gas to flow into the sliding cavity is arranged on the air inlet pipe, and a heat conducting fin which generates heat by friction with the sliding plate is arranged on the inner wall of the sliding cavity in an embedded mode; when the third push rod drives the detection cavity to move, when the sliding plate moves relatively in the sliding cavity, the heat generated by friction between the heat conducting plate and the sliding plate can heat the gas in the sliding cavity, and the pressure bag can suck the high-temperature gas in the sliding cavity in the expansion resetting process and spray the high-temperature gas onto a product through the air outlet pipe, so that the drying of the product can be promoted more efficiently.
Preferably, the heat conducting fin is internally provided with a ring-shaped diversion trench, the air inlet end of the diversion trench is communicated with the air inlet pipe, the air outlet end of the diversion trench is communicated with the inner end of the sliding cavity, and the air inlet end of the air inlet pipe extends to a heating part in the device; when the sliding cavity is used for sucking external gas through the gas inlet pipe, the sucked gas firstly flows into the diversion trench, the heat transfer area of the heat conducting fin and the sucked gas is increased, and the temperature of the gas at the heating parts such as the driving assembly inside the device is higher, and the gas at the heating parts is sucked by the gas inlet pipe, so that the subsequent sprayed temperature of the sucked gas can be further improved, and the gas outlet pipe can also promote the heat dissipation effect of the heating parts during the gas suction.
Preferably, the outer end of the nozzle on the side wall of the corrugated sleeve is provided with a movable ball, and the movable ball is connected with the side wall of the corrugated sleeve through a pull rope; when gas is sprayed out from the nozzle of the corrugated sleeve, the movable ball can be blown to impact the surface of the product, dropping of water drops on the surface of the product is promoted, meanwhile, the spherical movable ball can also enable the gas at the nozzle to be sprayed out in a divergent mode, and the uniformity of the surface of the product during cleaning is further improved.
Preferably, the movable ball is made of an elastic material; after the movable ball impacts the surface of the product under the action of the jet airflow, the movable ball can rebound back and forth under the action of self elasticity, so that the impact frequency of the movable ball and the product is improved, residual water drops on the product can be shaken off more effectively, meanwhile, the rebound movable ball can play a turbulent flow effect on the jet airflow, and the cleaning effect of the surface of the product is further improved.
The beneficial effects of the invention are as follows:
1. after the product is positioned and fixed, the inflation detection assembly works, the air tightness of the product is detected by inflating the product and detecting the air pressure, if the air tightness of the product is unqualified, the third push rod pushes the detection cavity to move upwards, so that the sliding cavity slides upwards relative to the sliding plate until detection liquid filled in the detection cavity submerges the product, and at the moment, a worker can quickly and accurately judge the position of a leakage point of the product by observing air bubbles generated by air leakage on the surface of the product, so that the time and labor are not required to be wasted for checking the product manually, the labor burden of the worker is reduced, and the detection efficiency of a motor shell is improved.
2. According to the invention, after the position of the leakage point is detected by the product, the third push rod drives the detection cavity to move downwards, so that the product is separated from the detection liquid, and meanwhile, the detection cavity can also drive the pressing block to squeeze the pressing bag when moving downwards, so that gas in the pressing bag is sprayed to the surface of the product through the gas outlet pipe, and therefore, the residual liquid on the surface of the product can be blown off, the dryness and the cleanliness of the product are improved, and the cleaning of the surface of the product by manpower is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an enlarged view at B in fig. 2;
fig. 5 is an enlarged view at C in fig. 2;
FIG. 6 is a schematic view of the structure of the slide bar of the present invention;
FIG. 7 is a schematic view showing a partial structure of a bellows in the second embodiment;
in the figure: the device comprises a workbench 1, a first push rod 2, a pressing piece 3, a supporting plate 4, a second push rod 5, a side pressure piece 6, a third push rod 7, a detection cavity 8, a sliding cavity 9, a sliding plate 10, an inflatable base 11, an inflatable detection assembly 12, a limiting plate 13, a pressing bag 14, an air outlet pipe 15, a pressing block 16, a sliding groove 17, a telescopic bag 18, a guide pipe 19, a sliding rod 20, a sliding block 21, a telescopic sleeve 22, an air outlet groove 23, a nozzle 24, a corrugated sleeve 25, a connecting pipe 26, a first check valve 27, a second check valve 28, an air inlet pipe 29, a third check valve 30, a heat conducting sheet 31, a guide groove 32, a movable ball 33 and a pull rope 34.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1-6, a new energy automobile motor housing air tightness testing device according to an embodiment of the invention includes a workbench 1; the top of the workbench 1 is connected with a first push rod 2, the bottom end of the first push rod 2 is connected with a pressing piece 3, the top of the workbench 1 corresponding to two sides of the pressing piece 3 is connected with a supporting plate 4, one side, close to each other, of the supporting plate 4 is connected with a side pressing piece 6 through a second push rod 5, the bottom surface of the workbench 1 corresponding to the bottom end of the pressing piece 3 is connected with a third push rod 7, the top end of the third push rod 7 is connected with a detection cavity 8, the inner bottom end of the detection cavity 8 is connected with a sliding cavity 9, the inner bottom end of the sliding cavity 9 is connected with a sliding plate 10 through an elastic piece in a sliding mode, the top end of the sliding plate 10 is connected with an inflatable base 11, and the inflatable base 11 is provided with an inflatable detection assembly 12; when the air tightness testing device in the prior art tests the motor shell, whether the motor shell leaks air or not is judged only by inflating and by the numerical change of air pressure, but the air leakage position of a workpiece cannot be accurately judged, and a worker is often required to manually detect leakage points, so that the motor shell is time-consuming and labor-consuming; when the testing device is used, the inflatable base 11 is positioned at the top of the detection cavity 8, a product to be tested is placed on the inflatable base 11, the first push rod 2 and the second push rod 5 respectively drive the lower pressing piece 3 and the testing piece to move towards the product, the product is positioned and fixed under the action of the inflatable base 11 supported by the elastic piece, then the inflatable detection assembly 12 works, the air tightness of the product is detected by inflating the product and detecting the air pressure, if the air tightness of the product is unqualified, the third push rod 7 pushes the detection cavity 8 to move upwards, so that the sliding cavity 9 slides upwards relative to the sliding plate 10 until detection liquid pre-filled in the detection cavity 8 floods the product, and then a worker can quickly and accurately judge the leakage point position of the product by observing air bubbles generated by air leakage on the surface of the product.
The bottom end of the supporting plate 4 is provided with a limiting plate 13, one surface of the limiting plate 13, which is close to the side wall of the detection cavity 8, is connected with a pressing bag 14, the pressing bag 14 is connected with an air outlet pipe 15, the other end of the air outlet pipe 15 extends to the position of the pressing piece 3, the air outlet of the air outlet pipe 15 faces the bottom end, and a pressing block 16 is arranged at the position of the inner wall of the detection cavity 8, which corresponds to the pressing bag 14; after the product is detected out of the position of the leakage point, the third push rod 7 drives the detection cavity 8 to move downwards, so that the product is separated from the detection liquid, and meanwhile, the pressing block 16 can be driven to squeeze the pressing bag 14 when the detection cavity 8 moves downwards, so that gas in the pressing bag is sprayed to the surface of the product through the gas outlet pipe 15, residual liquid on the surface of the product can be blown off, the dryness and the cleanliness of the product are improved, and the cleaning of the surface of the product by manpower is reduced.
A chute 17 is formed in the position of the inner wall of the sliding cavity 9 corresponding to the pressing block 16, the pressing block 16 is connected with the chute 17 in a sliding manner, and a spring is connected between the pressing block 16 and the inner end of the chute 17; when the detection cavity 8 drives the pressing block 16 to move downwards, the pressing block 16 is always contracted in the sliding groove 17 under the supporting pressure of the supporting plate 4 until the pressing block 16 completely moves without being limited by the supporting plate 4, at the moment, the pressing block 16 can instantly pop out of the sliding groove 17 under the action of the spring and instantly extrude the gas in the pressing bag 14, and compared with the detection cavity 8 which drives the pressing block 16 to slowly extrude the pressing bag 14, the air injection rate of the air outlet pipe 15 is improved, and therefore the cleaning effect of the surface of a product is improved.
The side wall of the pressing block 16 is attached to the inner wall of the chute 17, a telescopic bag 18 is arranged at the bottom end of the detection cavity 8, and the telescopic bag 18 is communicated with the inner end of the chute 17 through a guide pipe 19; the detection cavity 8 can extrude the telescopic bag 18 when resetting downwards, so that gas in the telescopic bag flows into the sliding groove 17, after the pressing block 16 is not limited by the supporting plate 4, the pressing block 16 can be ejected out more forcefully under the action of air pressure at the inner end of the sliding groove 17, and larger acting force is applied to the pressing bag 14, so that the air injection cleaning effect of the air outlet pipe 15 is further improved.
The side wall of the pressing piece 3 is connected with an arc-shaped slide bar 20, the slide bar 20 is connected with a slide block 21 in a sliding manner, an elastic telescopic sleeve 22 is connected between the slide block 21 and one end of the slide bar 20, an air outlet groove 23 connected with the air outlet end of the air outlet pipe 15 is formed in the bottom surface of the slide block 21, a nozzle 24 communicated with the air outlet groove 23 is connected to the side wall of the slide block 21, and the air injection direction of the nozzle 24 is tangential to the sliding track of the slide block 21 on the slide bar 20; when the gas in the gas outlet pipe 15 flows into the sliding block 21, a part of gas is sprayed out of the gas outlet groove 23 and cleans residual liquid on the surface of a product, and meanwhile, after a part of gas is sprayed out of the nozzle 24, the sliding block 21 can be applied with acting force of arc-shaped movement on the sliding rod 20, so that the gas outlet groove 23 can jet gas on the surface of the product in a rotating mode, and the surface of the product can be cleaned more fully and uniformly.
The bottom end of the air outlet groove 23 is connected with a freely telescopic corrugated sleeve 25, and a plurality of nozzles are formed in one side, close to the hold-down piece 3, of the corrugated sleeve 25 from top to bottom; after the gas flowing in the sliding block 21 fills the corrugated sleeve 25, the gas can be inflated and stretched to a position closer to the surface of the product, and at the moment, a part of the gas can be sprayed out from each opened nozzle, so that the gas can be positioned on the surface of the product at a shorter distance, and the cleaning effect of the product is further improved.
The sliding plate 10 is in seamless joint with the side wall of the sliding cavity 9, the inner end of the sliding cavity 9 is communicated with the pressing bag 14 through a connecting pipe 26, a first check valve 27 for enabling gas in the sliding cavity 9 to flow into the pressing bag 14 is arranged on the connecting pipe 26, a second check valve 28 for enabling the gas in the pressing bag 14 to flow out is arranged on the air outlet pipe 15, the inner end of the sliding cavity 9 is connected with an air inlet pipe 29 communicated with the outside, a third check valve 30 for enabling the external gas to flow into the sliding cavity 9 is arranged on the air inlet pipe 29, and a heat conducting fin 31 which generates heat by friction with the sliding plate 10 is arranged on the inner wall of the sliding cavity 9 in an embedded mode; when the third push rod 7 drives the detection cavity 8 to move, when the slide plate 10 moves relatively in the slide cavity 9, the gas in the slide cavity 9 can be heated through the heat generated by friction of the heat conducting plate and the slide plate 10, and the pressure bag 14 can suck the high-temperature gas in the slide cavity 9 in the expansion and resetting process and spray the high-temperature gas onto a product through the air outlet pipe 15, so that the product drying can be promoted more efficiently.
The inside of the heat conducting fin 31 is provided with a ring-shaped diversion trench 32, the air inlet end of the diversion trench 32 is communicated with the air inlet pipe 29, the air outlet end of the diversion trench 32 is communicated with the inner end of the sliding cavity 9, and the air inlet end of the air inlet pipe 29 extends to a heating part in the device; when the sliding chamber 9 sucks the external gas through the air inlet pipe 29, the sucked gas flows into the flow guide groove 32 at first, so that the heat transfer area of the heat conducting fin 31 and the sucked gas is increased and the temperature of the gas is increased more effectively, meanwhile, the temperature of the gas at the heating parts such as the driving component in the device is higher, the temperature of the sucked gas can be further increased after the air inlet pipe 29 sucks the hot gas at the heating parts, and the heat dissipation effect of the heating parts can be promoted when the air outlet pipe 15 sucks the air.
Embodiment two:
as shown in fig. 7, in comparative example one, another embodiment of the present invention is: the outer end of the nozzle on the side wall of the corrugated sleeve 25 is provided with a movable ball 33, and the movable ball 33 is connected with the side wall of the corrugated sleeve 25 through a pull rope 34; when gas is sprayed out from the nozzle of the corrugated sleeve 25, the movable ball 33 can be blown to impact the surface of the product, so that dropping of water drops on the surface of the product is promoted, and meanwhile, the spherical movable ball 33 can also enable the gas at the nozzle to be sprayed out in a divergent mode, so that the uniformity of the surface of the product during cleaning is further improved.
The movable ball 33 is made of an elastic material; after the movable ball 33 impacts the surface of the product under the action of the jet airflow, the movable ball 33 can rebound back and forth under the action of self elasticity, so that the impact frequency of the movable ball 33 and the product is improved, residual water drops on the product can be shaken off more effectively, meanwhile, the rebound movable ball 33 can play a turbulent flow effect on the airflow sprayed out of the jet, and the cleaning effect of the surface of the product is further improved.
Working principle: when the testing device is used, the inflatable base 11 is positioned at the top of the detection cavity 8, a product to be tested is placed on the inflatable base 11, the first push rod 2 and the second push rod 5 respectively drive the lower pressing piece 3 and the testing piece to move towards the product, the product is positioned and fixed under the action of the inflatable base 11 supported by the elastic piece, then the inflatable detection assembly 12 works, the air tightness of the product is detected by inflating and detecting the air pressure form inside the product, if the air tightness of the product is unqualified, the third push rod 7 pushes the detection cavity 8 to move upwards, so that the sliding cavity 9 slides upwards relative to the sliding plate 10 until the detection liquid pre-filled in the detection cavity 8 floods the product, and then a worker can quickly and accurately judge the leakage point position of the product by observing air bubbles generated by air leakage on the surface of the product, so that the labor is not required to be wasted time and labor, the labor burden of the worker is reduced, and the detection efficiency of the motor housing is improved; when the product detects the position of the leakage point, the third push rod 7 drives the detection cavity 8 to move downwards so as to separate the product from the detection liquid, and meanwhile, the detection cavity 8 can also drive the pressing block 16 to squeeze the pressing bag 14 when moving downwards so that gas in the pressing bag is sprayed to the surface of the product through the gas outlet pipe 15, thereby being capable of blowing off the residual liquid on the surface of the product, improving the dryness and cleanliness of the product and reducing the cleaning of the surface of the product by manpower; when the detection cavity 8 drives the pressing block 16 to move downwards, the pressing block 16 is always contracted in the chute 17 under the supporting pressure of the supporting plate 4 until the pressing block 16 is completely moved without being limited by the supporting plate 4, at the moment, the pressing block 16 can instantly pop out of the chute 17 under the action of a spring and instantly extrude the gas in the pressing bag 14, and compared with the detection cavity 8 which drives the pressing block 16 to slowly extrude the pressing bag 14, the air injection rate at the air outlet pipe 15 is improved, so that the cleaning effect of the surface of a product is improved; when the detection cavity 8 is reset downwards, the telescopic bag 18 can be extruded, so that gas in the telescopic bag flows into the chute 17, and when the pressing block 16 is not limited by the supporting plate 4, the pressing block 16 can be ejected out more forcefully under the action of air pressure at the inner end of the chute 17, and larger acting force is applied to the pressing bag 14, so that the air injection cleaning effect of the air outlet pipe 15 is further improved; when the gas in the gas outlet pipe 15 flows into the sliding block 21, a part of gas is sprayed out of the gas outlet groove 23 and cleans residual liquid on the surface of a product, and meanwhile, after a part of gas is sprayed out of the nozzle 24, the sliding block 21 can be acted on the acting force of the arc-shaped movement of the sliding rod 20, so that the gas outlet groove 23 can jet gas on the surface of the product in a rotating way, and the surface of the product can be cleaned more fully and uniformly; after the gas flowing in the sliding block 21 is filled into the corrugated sleeve 25, the gas can be inflated and stretched to a position closer to the surface of the product, and at the moment, a part of the gas can be sprayed out from each opened nozzle, so that the gas can be positioned on the surface of the product at a shorter distance, and the cleaning effect of the product is further improved; when the third push rod 7 drives the detection cavity 8 to move, the sliding plate 10 can heat the gas in the sliding cavity 9 by friction heat generated by the heat conducting plate and the sliding plate 10, and the pressure bag 14 can suck the high-temperature gas in the sliding cavity 9 and spray the gas onto a product through the air outlet pipe 15 in the process of expanding and resetting, so that the drying of the product can be promoted more efficiently; when the sliding chamber 9 sucks the external gas through the gas inlet pipe 29, the sucked gas flows into the flow guide groove 32 at first, so that the heat transfer area of the heat conducting fin 31 and the sucked gas is increased and the gas is heated more effectively, meanwhile, the temperature of the gas at the heating parts such as the driving component in the device is higher, after the gas inlet pipe 29 sucks the hot gas at the position, the temperature of the sucked gas sprayed out subsequently can be further improved, and the heat dissipation effect of the heating parts can be promoted when the gas outlet pipe 15 sucks the gas; when gas is sprayed out from the nozzle of the corrugated sleeve 25, the movable ball 33 can be blown to impact the surface of the product, so that dropping of water drops on the surface of the product is promoted, and meanwhile, the spherical movable ball 33 can also enable the gas at the nozzle to be sprayed out in a divergent manner, so that the uniformity of the surface of the product during cleaning is further improved; after the movable ball 33 impacts the surface of the product under the action of the jet airflow, the movable ball 33 can rebound back and forth under the action of self elasticity, so that the impact frequency of the movable ball 33 and the product is improved, residual water drops on the product can be shaken off more effectively, meanwhile, the rebound movable ball 33 can play a turbulent flow effect on the airflow sprayed out of the jet, and the cleaning effect of the surface of the product is further improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, and that the foregoing embodiments and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications fall within the scope of the invention as hereinafter claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a new energy automobile motor housing gas tightness testing arrangement, includes workstation (1); the method is characterized in that: the top of workstation (1) is connected with push rod (2) No. one, push rod (2) bottom is connected with and pushes down piece (3), the workstation (1) top that pushes down piece (3) both sides correspond is connected with backup pad (4), the one side that backup pad (4) are close to each other is connected with side pressure spare (6) through No. two push rods (5), be connected with No. three push rods (7) on workstation (1) bottom surface that push rod (3) bottom corresponds down, no. three push rods (7) top is connected with detection chamber (8), the inside bottom of detection chamber (8) is connected with smooth chamber (9), the inside bottom of smooth chamber (9) is through elastic component sliding connection has slide (10), the top of slide (10) is connected with inflatable seat (11), be equipped with on inflatable seat (11) and aerify detection subassembly (12);
the bottom end of the supporting plate (4) is provided with a limiting plate (13), one surface of the limiting plate (13) close to the side wall of the detection cavity (8) is connected with a pressing bag (14), the pressing bag (14) is connected with an air outlet pipe (15), the other end of the air outlet pipe (15) extends to the position of the pressing piece (3), an air outlet of the air outlet pipe (15) faces to the bottom end, and a pressing block (16) is arranged at the position of the inner wall of the detection cavity (8) corresponding to the pressing bag (14);
an arc-shaped sliding rod (20) is connected to the side wall of the pressing piece (3), a sliding block (21) is connected to the sliding rod (20) in a sliding manner, an elastic telescopic sleeve (22) is connected between the sliding block (21) and one end of the sliding rod (20), an air outlet groove (23) connected with the air outlet end of the air outlet pipe (15) is formed in the bottom surface of the sliding block (21), a nozzle (24) communicated with the air outlet groove (23) is connected to the side wall of the sliding block (21), and the air injection direction of the nozzle (24) is tangential to the sliding track of the sliding block (21) on the sliding rod (20);
the bottom of the air outlet groove (23) is connected with a corrugated sleeve (25) which can freely stretch and retract, and a plurality of nozzles are formed in one side, close to the lower pressing piece (3), of the corrugated sleeve (25) from top to bottom.
2. The new energy automobile motor housing tightness testing device according to claim 1, wherein: a sliding groove (17) is formed in the position, corresponding to the pressing block (16), of the inner wall of the sliding cavity (9), the pressing block (16) is connected with the sliding groove (17) in a sliding mode, and a spring is connected between the pressing block (16) and the inner end of the sliding groove (17).
3. The new energy automobile motor housing tightness testing device according to claim 2, wherein: the side wall of briquetting (16) is laminated with the inner wall of spout (17), detection chamber (8) bottom is equipped with flexible bag (18), be linked together through pipe (19) between flexible bag (18) and the inner of spout (17).
4. The new energy automobile motor housing tightness testing device according to claim 1, wherein: the utility model discloses a sliding plate, including slide (10), sliding chamber (9), connecting pipe (26) are installed between the lateral wall of slide (10) and sliding chamber (9), be linked together through connecting pipe (26) between inner and the pressing bag (14) of sliding chamber (9), install on connecting pipe (26) and supply gas inflow pressing bag (14) in one-way valve (27), install on outlet duct (15) and supply second check valve (28) of gas outflow in pressing bag (14), the inner of sliding chamber (9) is connected with intake pipe (29) that are linked together with the external world, install on intake pipe (29) and supply external gas inflow three check valves (30) inside slide (9), inlay on the sliding chamber (9) inner wall install with slide (10) friction heat-generating conducting strip (31).
5. The new energy automobile motor housing gas tightness testing arrangement according to claim 4, wherein: the heat conducting fin (31) is internally provided with a ring-shaped diversion trench (32), the air inlet end of the diversion trench (32) is communicated with the air inlet pipe (29), the air outlet end of the diversion trench (32) is communicated with the inner end of the sliding cavity (9), and the air inlet end of the air inlet pipe (29) extends to a heating part inside the device.
6. The new energy automobile motor housing tightness testing device according to claim 1, wherein: the outer end of the nozzle on the side wall of the corrugated sleeve (25) is provided with a movable ball (33), and the movable ball (33) is connected with the side wall of the corrugated sleeve (25) through a pull rope (34).
7. The new energy automobile motor housing tightness testing device according to claim 6, wherein: the movable ball (33) is made of an elastic material.
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| CN202210365267.5A CN115541129B (en) | 2022-04-07 | 2022-04-07 | New energy automobile motor housing gas tightness testing arrangement |
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| CN202210365267.5A CN115541129B (en) | 2022-04-07 | 2022-04-07 | New energy automobile motor housing gas tightness testing arrangement |
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| CN115541129A (en) | 2022-12-30 |
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