CN110076030B - Quick detection and repair spraying device and method for spraying quality of engine bearing bush - Google Patents
Quick detection and repair spraying device and method for spraying quality of engine bearing bush Download PDFInfo
- Publication number
- CN110076030B CN110076030B CN201910190366.2A CN201910190366A CN110076030B CN 110076030 B CN110076030 B CN 110076030B CN 201910190366 A CN201910190366 A CN 201910190366A CN 110076030 B CN110076030 B CN 110076030B
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- spraying
- bearing bush
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- air
- engine bearing
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- 238000005507 spraying Methods 0.000 title claims abstract description 95
- 238000001514 detection method Methods 0.000 title claims abstract description 46
- 230000008439 repair process Effects 0.000 title claims description 12
- 238000000034 method Methods 0.000 title description 8
- 239000007921 spray Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0292—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work devices for holding several workpieces to be sprayed in a spaced relationship, e.g. vehicle doors spacers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
- B05B13/0405—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
- B05B13/041—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads with spray heads reciprocating along a straight line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
- B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/02—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness
- G01B13/06—Measuring arrangements characterised by the use of fluids for measuring length, width or thickness for measuring thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spray Control Apparatus (AREA)
Abstract
The device is characterized in that the upper detection and spraying feeding device comprises a lifting rack, a spraying device and a detection device, wherein the spraying device and the detection device are arranged on the lifting rack, the lower multifunctional rotating clamp comprises a rotating platform, a fixing device is arranged on the rotating platform, the engine bearing bushes to be sprayed are arranged in the fixing device, two groups of engine bearing bushes are spliced into a ring shape, a plurality of groups of engine bearing bushes are stacked up and down to form a cylinder, and an upper opening of the cylinder is opposite to the upper detection and spraying feeding device; the detection device comprises a measuring nozzle which can uniformly jet air to the inner wall of the cylinder of the engine bearing bush, and an air source supplies air to the measuring nozzle through an air pipe; the air pipe is provided with an air chamber, and the air chamber is provided with a bellows type pneumatic sensor; the bellows type pneumatic sensor can convert air chamber air pressure fluctuation caused by uneven spraying of the engine bearing bush into an electric signal, and therefore spraying quality detection of the engine bearing bush is achieved.
Description
Technical Field
The invention relates to the field of automobile manufacturing, in particular to a device and a method for quickly detecting and repairing spraying quality of an engine bearing bush.
Background
In order to meet the mass production requirement of the engine bearing bush, the assembly line is an option. However, in the progress of the processes of mechanical sorting, clamping, spraying, drying, polishing, sintering, final inspection and the like of the bearing bush, the problem that spraying quantity of part of the bearing bush is insufficient or spraying is missed due to uneven spraying or local plugging and the like possibly exists at the beginning of a spray head. Thus, the workload of subsequent sorting measurement and the like is increased. Therefore, the quick detection of the spraying quality of the bearing bush and the repair spraying operation are introduced in the operation flow, so that the problem of the re-spraying operation amount of the bearing bush can be effectively reduced. In the existing assembly line operation mode, the bearing bush with the defective spraying quality can be found only by carrying out relevant quality inspection after the product spraying process is finished. A great deal of sorting work and problem part re-spraying work are required, and the workload is high.
Disclosure of Invention
In order to solve the problems, the invention provides a quick detection and spray repair device for the spraying quality of an engine bearing bush, which comprises an upper detection and spray repair feeding device and a lower rotary clamp, wherein the upper detection and spray repair feeding device comprises a lifting rack, a spraying device and a detection device on the lifting rack, the lower multifunctional rotary clamp comprises a rotary platform, a fixing device is arranged on the rotary platform, the engine bearing bushes to be sprayed are arranged in the fixing device, two groups of engine bearing bushes are spliced into a circular shape, a plurality of groups of engine bearing bushes are stacked up and down to form a cylinder, and the upper opening of the cylinder is opposite to the upper detection and spray repair feeding device;
the detection device comprises a measuring nozzle which can uniformly jet air to the inner wall of the cylinder of the engine bearing bush, and an air source supplies air to the measuring nozzle through an air pipe; the air pipe is provided with an air chamber, and the air chamber is provided with a pneumatic sensor; the pneumatic sensor can convert air pressure fluctuation of the air chamber caused by uneven spraying of the engine bearing bush into an electric signal, and therefore the spraying quality detection of the engine bearing bush is realized.
Further improved, the bellows type gas sensor is also connected with a signal processing circuit, and the signal processing circuit calculates the clearance Z between the measuring nozzle and the bearing bush in front of the measuring nozzle according to the following formula so as to judge the spraying quality:
wherein Pc is air pressure of an air chamber, pg is air pressure of air supply, Z is a gap between a measuring nozzle and a bearing bush in front of the measuring nozzle, and a is a measuring coefficient; d is the diameter of the measuring nozzle;air inlet diameter.
Further improvement, the fixing device comprises a left V-shaped block and a right V-shaped block which limit the cylinder of the engine bearing bush.
A method for rapidly detecting and repairing the spraying quality of an engine bearing bush comprises the following steps:
(1) Clamping a workpiece: the workpiece is positioned and clamped by utilizing the V-shaped block and the rotary bottle table, and a plurality of bearing bushes are clamped on the rotary table to form a cylinder;
(2) And (3) spraying: the bearing bush rotates along with the rotating platform; the upper detection and spraying feeding device is slowly placed into the working along with the liftable upper bench; when the nozzle enters the bearing bush position, the first spraying operation of the spraying opening on the inner surface of the bearing bush is finished from top to bottom by utilizing the movement of the lifting rack.
(3) Detecting spraying quality and supplementing spraying operation: after the first spraying of the workpiece is finished, along with the upper detection and the lifting of the spraying feeding device, the detection device is utilized to finish the rapid detection of the spraying quality of the first spraying surface of the bearing bush; when the thickness of the spraying layer does not reach the preset value, the spraying material carries out the supplementary spraying operation on the detected problem bearing bush through the spraying material inlet and the channel thereof.
The beneficial effects of the invention are as follows:
the invention can be used for simply replacing the spraying device in the conventional bearing bush assembly line production, not only can realize the spraying operation, but also can rapidly detect the first spraying quality and supplement the spraying operation. Therefore, the quality evaluation and the supplementary spraying operation which can be performed after the final inspection link of the existing bearing bush product can be effectively improved, and the quality detection and the quality improvement of the secondary spraying can be completed in the spraying operation link.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a diagram of an upper inspection and spray feed apparatus;
FIG. 2 is a lower swivel clamp;
fig. 3 is a diagram of a bellows type piezoelectric sensor.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The device is mainly divided into an upper detection and spraying feeding device and a lower rotating clamp. The upper detection and spraying feeding device mainly comprises an upper rack capable of being integrally lifted, a spraying device fixed on the upper rack and a spraying quality detection device fixed on the rack. The lower rotary clamp mainly comprises a workbench, an end face bearing, a driving motor, a speed reducer, a rotary table top and a V-shaped block. The workpiece with the spraying bearing bush can be placed into the V-shaped block after being formed into a cylinder shape by groups (a left sleeve and a right sleeve), and each group is directly overlapped together under the action of gravity.
The spraying quality detection of the engine bearing bush is divided into 2 steps, namely pneumatic measurement and air-electricity conversion, and is evaluated by measuring the variation of the cylindrical diameter synthesized by the left bearing bush and the right bearing bush. The principle of the pneumatic measuring process is shown in fig. 1, the purified and stabilized working gas source is fed into a pipeline 1 at pressure Pg, and after passing through an air inlet nozzle 2 and an air chamber 4, gas is sprayed into a workpiece through a measuring nozzle 5. The change in the working dimension is reflected indirectly when the gap between the measuring nozzle and the workpiece in front of it is changed. As can be seen from the principle of air pressure, the smaller Z is, the pressure P of the air chamber C The larger. The chamber measured pressure can be calculated according to the following formula:
wherein a-the measurement coefficient; d-measuring the diameter of the nozzle;-inlet nozzle diameter. As can be seen from this formula,and->Inversely proportional, as a nonlinear system, the measurement is mainly performed using the approximately linear part of the characteristic curve (generally takenThe linearity is good when the linear degree is changed in the left-right range. ) And (F)>The larger the sensitivity is, the smaller the measurement range is.
The principle of the gas-electricity conversion process is shown in fig. 2, and the working principle of the bellows type gas-electricity sensor is as follows: the change in the size of the workpiece to be measured causes a change in the measurement gap Z, and the measurement pressure PC changes accordingly, which causes the bellows 33 to deform telescopically and drive the magnetic core 31 to move in the inductance coil 32. The small change of the measured dimension is converted into the change of the inductance in the inductance coil, the inductance is collected and processed by the controller, and finally the change value of the measured dimension is indicated and a control signal is sent out through the circuit processing.
The module of the invention can replace the original spraying device, can keep the original assembly line spraying operation, and can carry out quick inspection and repair spraying of the spraying quality. The specific flow of the part is as follows:
(1) Clamping a workpiece: and positioning and clamping work is completed on the workpiece by utilizing the V-shaped block and the rotary table, and a plurality of bearing bushes are orderly clamped on the rotary table. The centering and positioning among a plurality of workpieces can be realized by utilizing the V-shaped blocks.
(2) First spraying of a workpiece: on one hand, the clamped workpiece can perform main rotation movement along with the sleeve under the drive of the driving motor and the speed reducer; on the other hand, the upper detection and spraying feeding device is slowly placed into the working along with the liftable upper bench. Because the upper detection and spraying feeding device and the V-shaped block only have simple up-down relative movement, the relative position can be determined simply according to the equipment precision. When the nozzle enters the bearing bush position, the first spraying operation of the spraying opening on the inner surface of the bearing bush can be finished from top to bottom by utilizing the rising motion of the upper table top and the rotating motion of the lower rotating table top.
(3) Detecting the spraying quality of the workpiece and carrying out supplementary spraying operation: after the first spraying of the workpiece is finished, along with the upper detection and the lifting of the spraying feeding device, the spraying quality detection module designed by the invention can be utilized to finish the rapid detection of the spraying quality of the first spraying surface of the bearing bush. When the thickness of the spraying layer does not reach the preset value, the spraying material carries out the supplementary spraying operation on the detected problem bearing bush through the spraying material inlet and the channel thereof.
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.
Claims (4)
1. The quick detection and spray repair device for the spraying quality of the engine bearing bushes comprises an upper detection and spray feed device and a lower rotary clamp, and is characterized in that the upper detection and spray feed device comprises a lifting rack, a spray device and a detection device, wherein the spray device and the detection device are arranged on the lifting rack, the lower rotary clamp comprises a rotary platform, a fixing device is arranged on the rotary platform, the engine bearing bushes to be sprayed are arranged in the fixing device, two groups of engine bearing bushes are spliced into a ring shape, a plurality of groups of engine bearing bushes are stacked up and down to form a cylinder, and the upper opening of the cylinder is opposite to the upper detection and spray feed device;
the detection device comprises a measuring nozzle which can uniformly jet air to the inner wall of the cylinder of the engine bearing bush, and an air source supplies air to the measuring nozzle through an air pipe; the air pipe is provided with an air chamber, and the air chamber is provided with a pneumatic sensor; the pneumatic sensor can convert air pressure fluctuation of the air chamber caused by uneven spraying of the engine bearing bush into an electric signal, and therefore the spraying quality detection of the engine bearing bush is realized.
2. The rapid detection and repair spraying device for the spraying quality of the engine bearing bush according to claim 1, wherein the pneumatic sensor is a bellows type pneumatic sensor, and is further connected with a signal processing circuit, and the signal processing circuit calculates a gap Z between the measuring nozzle and the bearing bush in front of the measuring nozzle according to the following formula so as to judge the spraying quality:
wherein Pc is air pressure of an air chamber, pg is air pressure of air supply, Z is a gap between a measuring nozzle and a bearing bush in front of the measuring nozzle, and a is a measuring coefficient; d is the diameter of the measuring nozzle; d, d 1 Air inlet diameter.
3. The quick detection and repair device for the spraying quality of the engine bearing bush according to claim 1, wherein the fixing device comprises a left V-shaped block and a right V-shaped block which limit a cylinder of the engine bearing bush.
4. The quick detection and repair spraying method for the spraying quality of the engine bearing bush is characterized by comprising the following steps of:
step one), clamping a workpiece: the workpiece is positioned and clamped by utilizing the V-shaped block and the rotary bottle table, and a plurality of bearing bushes are clamped on the rotary table to form a cylinder;
step two), first spraying: the bearing bush rotates along with the rotating platform; the upper detection and spraying feeding device is placed in the working along with the liftable upper bench; when the nozzle enters the bearing bush position, the first spraying operation of the spraying opening on the inner surface of the bearing bush is finished from top to bottom by utilizing the movement of the lifting rack.
Step three), spray quality detection and supplementary spray operation: after the first spraying of the workpiece is finished, along with the upper detection and the lifting of the spraying feeding device, the detection device is utilized to finish the rapid detection of the spraying quality of the first spraying surface of the bearing bush; when the thickness of the spraying layer does not reach the preset value, the spraying material carries out the supplementary spraying operation on the detected problem bearing bush through the spraying material inlet and the channel thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190366.2A CN110076030B (en) | 2019-03-13 | 2019-03-13 | Quick detection and repair spraying device and method for spraying quality of engine bearing bush |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190366.2A CN110076030B (en) | 2019-03-13 | 2019-03-13 | Quick detection and repair spraying device and method for spraying quality of engine bearing bush |
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| Publication Number | Publication Date |
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| CN110076030A CN110076030A (en) | 2019-08-02 |
| CN110076030B true CN110076030B (en) | 2023-11-07 |
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| CN201910190366.2A Active CN110076030B (en) | 2019-03-13 | 2019-03-13 | Quick detection and repair spraying device and method for spraying quality of engine bearing bush |
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| CN111037518A (en) * | 2019-12-30 | 2020-04-21 | 佛山职业技术学院 | Engine, transmission and other parts working table |
| CN111570164A (en) * | 2020-05-14 | 2020-08-25 | 梁宇 | Automatic pipeline coating complete equipment and using method thereof |
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| CN112495652B (en) * | 2020-11-23 | 2023-07-04 | 贵州华富天玻璃包装有限公司 | Novel drawing equipment for inner wall of wine bottle |
| CN113426618B (en) * | 2021-05-12 | 2022-11-08 | 宁波环甬润保涂层科技有限公司 | Integrated bearing bush spraying process equipment and processing method |
| CN116200745B (en) * | 2023-05-05 | 2023-09-05 | 江苏扬阳化工设备制造有限公司 | Automatic powder spraying machine for glass lining equipment |
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| DE19854634C1 (en) * | 1998-11-26 | 2000-02-24 | Wolfgang Puffe | Contactless application of a fluid, especially a thermoplastic or molten hot melt adhesive, onto a moving strip and applying head with a housing containing a chamber and a rotating roll slide |
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| JP4105516B2 (en) * | 2002-09-27 | 2008-06-25 | 大同メタル工業株式会社 | Film forming device for bearing inner surface |
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| US2889873A (en) * | 1954-12-11 | 1959-06-09 | Luwa S A | Spray drying apparatus |
| CN87210928U (en) * | 1987-07-22 | 1988-07-27 | 机械工业部第三设计研究院 | Pneumatic instrument for messuring large gap |
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| CN110076030A (en) | 2019-08-02 |
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Address after: 350100 No. 69, Xuefu South Road, Shangjie Town, Minhou County, Fuzhou City, Fujian Province Patentee after: Fujian University of Science and Technology Patentee after: HUATAI AUTOMOBILE PARTS INDUSTRY (NANPING) Co.,Ltd. Address before: 350000, Fujian, Fuzhou province Minhou County town street, Fuzhou District, the new campus of the School Road Patentee before: FUJIAN University OF TECHNOLOGY Patentee before: HUATAI AUTOMOBILE PARTS INDUSTRY (NANPING) Co.,Ltd. |