CN112902801A - Assembling and detecting production line and assembling and detecting method for automobile engine chain tensioner - Google Patents
Assembling and detecting production line and assembling and detecting method for automobile engine chain tensioner Download PDFInfo
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- CN112902801A CN112902801A CN202110200173.8A CN202110200173A CN112902801A CN 112902801 A CN112902801 A CN 112902801A CN 202110200173 A CN202110200173 A CN 202110200173A CN 112902801 A CN112902801 A CN 112902801A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0025—Measuring of vehicle parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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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
- G01M3/26—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides an assembling, detecting and producing line and an assembling and detecting method of an automobile engine chain tensioner aiming at the defects of low detecting and assembling efficiency and difficult control of product quality when detecting and assembling the tensioner in the prior art, the assembling and detecting and producing line of the automobile engine chain tensioner comprises a first station, a second station, a third station and a fourth station which are positioned in the same operating space, a plunger outer diameter and air tightness detecting tool is arranged in the first station, a plunger air tightness detecting head and a transverse pressing cylinder press a labyrinth and a spring into an inner hole of a plunger when detecting the air tightness of the plunger, and the assembling, detecting and producing line and the assembling and detecting method of the automobile engine chain tensioner also comprise a control device, the assembling, detecting and producing line and the assembling and detecting method of the automobile engine chain tensioner can realize flexible production of various types, the product quality is easy to track, and the flexibility of, the system is targeted, automatic production control, online automatic detection and data acquisition of equipment are realized, and records are automatically formed.
Description
Technical Field
The invention belongs to the technical field of assembly and detection of parts, and particularly relates to an assembly and detection production line and an assembly and detection method of an automobile engine chain tensioner.
Background
As shown in fig. 7, the parts that make up the tensioner for an automotive engine chain include a housing 203, a plunger 104, a labyrinth 121, a spring 105, and a latch and check valve (green in the figure), the plunger being disposed in a plunger bore of the housing, the spring and labyrinth being disposed in an inner bore of the plunger, the plunger and housing being locked by the latch. In the process of detecting and assembling the chain tensioner of the automobile engine, the outer diameter of the plunger and the inner diameter of the shell, the sealing performance of the plunger and the sealing performance of the shell need to be detected, after the detection is finished, manual recording is carried out, data recorded in each process are compared, and qualified parts are screened out and enter the assembling process; in the detection process, because of errors in manual detection, the tensioner assembled by the screened qualified parts still possibly generates unqualified products, and the detection and assembly method has repeatability on product process quality control and production, so that the detection and assembly efficiency is reduced; the record of detection, equipment process passes through the manual recording, has and leaks defeated, mistake defeated risk, needs many people to carry out the reexamination to the record data, increases the cost of labor.
Disclosure of Invention
Aiming at the defects of low detection and assembly efficiency and difficult control of product quality in the process of detecting and assembling the tensioner in the prior art, the assembling and detecting production line and the assembling and detecting method of the chain tensioner of the automobile engine are provided.
The above object of the present invention is achieved by the following technical solutions:
an automobile engine chain tensioner assembling and detecting production line comprises a station I, a station II, a station III and a station IV which are positioned in the same operation space, wherein a plunger outer diameter and air tightness detecting tool is arranged in the station I, and a plunger air tightness detecting head and a transverse pressing cylinder press a labyrinth and a spring into an inner hole of a plunger while plunger air tightness detection is carried out;
a shell inner diameter detection tool is arranged in the station II, the shell inner diameter detection tool completes shell inner diameter detection, and the check valve is installed in a plunger hole of the shell through the shell inner diameter detection tool;
a shell sealing detection tool is arranged in the third station to finish shell sealing detection;
a tensioner detection and assembly tool is arranged in the station IV, and comprises a tensioner air tightness measuring instrument, a tensioner air tightness detecting head and a tensioner spring load pressure detector, wherein the tensioner spring load pressure detector is used for detecting the tensioner spring load pressure and pressing the plunger into the plunger hole of the shell;
also comprises a control device, the control device at least comprises a data storage calculation module and an alarm prompt module,
the control device receives the plunger outer diameter size sent by the pneumatic measuring instrument I and the shell inner diameter size sent by the pneumatic measuring instrument II, compares and judges whether the fit clearance of the plunger outer diameter size and the shell inner diameter size meets the requirement, and sends out a prompt when the fit clearance does not meet the requirement;
the plunger outer diameter and air tightness detection tool comprises a plunger outer diameter detection device and a plunger air tightness detection device, the plunger outer diameter detection device comprises a first pneumatic measuring instrument and a plunger outer diameter detection head, a gas outlet of the first pneumatic measuring instrument is communicated with the plunger outer diameter detection head through a gas output pipeline, and the plunger outer diameter detection head is supported through a first support; the plunger air tightness detection device comprises a plunger air tightness detection head and a second support, the plunger air tightness detection head is supported and fixed by the second support, the plunger air tightness detection head is communicated with an air outlet of the high-pressure air supply device through a second gas pipeline, the plunger air tightness detection head is positioned on one side of the plunger outer diameter detection head, a transverse jacking cylinder is arranged on the other side of the plunger outer diameter detection head, when the plunger is positioned on the plunger outer diameter detection head, a piston rod of the plunger and the transverse jacking cylinder is coaxially arranged with the plunger air tightness detection head, a vertical pressing cylinder is arranged above the plunger outer diameter detection head, and a piston rod of the vertical pressing cylinder is arranged towards the plunger outer diameter detection head; the gas pipeline II and/or the plunger gas tightness detection head are/is provided with a gas tightness flow detection solenoid valve and a plunger gas tightness flow sensor, the vertical pressing cylinder, the transverse pressing cylinder and the gas tightness flow detection solenoid valve are all in electric signal connection with the output end of the control device, and the plunger gas tightness flow sensor and the pneumatic measuring instrument I are respectively in electric signal connection with the input end of the control device; recording the detected data;
the shell inner diameter detection tool comprises a pneumatic measuring instrument II and a shell inner diameter detection head, the shell inner diameter detection head is supported and fixed by a support III, the shell inner diameter detection head is communicated with a gas outlet of the pneumatic measuring instrument II through a gas pipeline III, a one-way valve pressing cylinder is arranged above the shell inner diameter detection head, and a piston rod of the one-way valve pressing cylinder is arranged towards the shell inner diameter detection head;
the shell airtightness detection tool comprises a shell airtightness detection head and a third support, the shell airtightness detection head is supported and fixed by the third support, the shell airtightness detection head is communicated with the high-pressure gas supply device through a gas pipeline IV, a shell airtightness detection compaction cylinder is arranged above the shell airtightness detection head, and a piston rod of the shell airtightness detection compaction cylinder faces the shell airtightness detection head; a gas tightness measuring electromagnetic valve is arranged on the gas pipeline IV, and the shell gas tightness measuring electromagnetic valve and the shell gas tightness detection pressing cylinder are respectively in electric signal connection with the control device to record a detection result;
the tensioner gas tightness measuring instrument is connected with the tensioner gas tightness detecting head through a gas pipeline five, the tensioner spring load pressure detector comprises a tensioner positioning tool, a servo electric cylinder, a tensioner pressing rod and a pressure sensor, a piston rod of the servo electric cylinder is arranged downwards and is opposite to the tensioner positioning tool, the tensioner pressing rod is arranged on the piston rod of the servo electric cylinder, the pressure sensor is arranged between the tensioner pressing rod and the servo electric cylinder, and the tensioner gas tightness detecting head is arranged on the tensioner positioning tool and is coaxial with the tensioner piston rod;
tensioner location frock includes support five, and the upper surface of support five is provided with the locating surface, is provided with the holding surface with the locating surface is perpendicular, and the holding surface is last to be provided with the connecting hole with tensioner last locating hole position and size correspondence, and tensioner passes through bolt and holding surface fixed connection, is provided with the gas tightness inspection hole on the locating surface, and tensioner gas tightness detection head is located this gas tightness inspection hole, and the locating surface is located tensioner depression bar below.
A method for assembling and detecting chain tensioner of car engine includes such steps as detecting the spring and load force of tensioner, assembling qualified plunger assembly and qualified casing assembly together to obtain tensioner, detecting the pressure of spring and spring on tensioner by servo cylinder with pressure sensor, recording the initial displacement of piston rod of servo cylinder when pressure is generated by servo cylinder, comparing it with the standard initial displacement set in controller to determine if labyrinth is installed, judging if labyrinth is installed, if it is not, recording the load force of spring detected by pressure sensor at each position, and comparing the load force with the standard spring corresponding to each position The spring load force is compared to judge whether the load force of a spring on the tensioner is qualified or not, a prompt tone is given out when the spring load force is unqualified, and a bolt is inserted into a bolt hole to complete the assembly and detection work of the tensioner when the spring load force is qualified;
the assembly and detection of the plunger assembly and the shell assembly are completed according to the following method, a spring and a labyrinth are placed in an inner hole of the plunger, the outer diameter of the plunger is detected by adopting a first pneumatic measuring instrument and a plunger outer diameter detection head, the detected outer diameter of the plunger is recorded and stored by a control device, the air tightness of the plunger is detected by adopting a plunger air tightness detection head, the spring and the labyrinth are pressed into the inner hole of the plunger at the same time, and the gas flow of a flow path detected by an air tightness flow sensor of the plunger air tightness detection head is transmitted to the control device and is recorded and stored by the control device; the inner diameter of a plunger hole of the shell is detected through a pneumatic measuring instrument II and the inner diameter detection head of the shell, a one-way valve is placed on the inner diameter detection head of the shell, the shell is sleeved to enable the plunger hole of the shell to be matched and connected with the inner diameter detection head of the shell, a shell airtightness detection gas flow sensor of the shell airtightness detection tool detects the flow of gas flowing through the plunger hole of the shell, the gas flow is transmitted to a control device to be recorded and stored, then the one-way valve is pressed into the plunger hole of the shell to obtain a shell assembly, the control device judges whether the fit between the plunger outer diameter and the shell inner diameter is qualified or not according to the received information of the plunger outer diameter and the shell inner diameter, if the detection is not qualified, sending a prompt to finish the detection, if the detection is qualified, detecting the air tightness of the shell by using a shell air tightness detecting head, and transmitting the gas flow which flows through the plunger hole of the shell and is detected by a shell air tightness flow sensor of the shell air tightness detecting head to a control device for recording and storing; and assembling the plunger assembly and the shell assembly together to obtain the tensioner, measuring the air tightness of the tensioner by using a tensioner air tightness measuring instrument, and transmitting the gas flow which flows through the plunger hole of the tensioner and is measured by the tensioner air tightness measuring instrument to a control device, storing and recording.
Compared with the prior art, the invention has the following advantages and effects:
each station is designed in a modular mode, and the tensioner with different specifications and models can be adapted by replacing detection heads and tool fixtures with different specifications and specifications, so that flexible production of multiple varieties can be realized;
the detection automation is basically realized, the automation level is high, and the operation is simple. For the tensioner on each detection line, the sizes of the plunger and the shell can be correspondingly matched and compared one by one, products with insufficient precision can be found before the products are assembled, and waste products caused by mismatch of precision errors can be prevented in advance. And the detection condition of the product is recorded on line, so that the product quality is easy to track.
Automatic detection can be realized, a sensor and a control valve with proper precision can be matched according to the requirement of product precision, the detection precision is improved as required, and the flexibility and pertinence of product control are realized.
Furthermore, by means of executing devices such as a control device, a servo electric cylinder, a PLC programmable controller, a pneumatic executing element, an electric control element and the like, automatic production control, online automatic detection and data acquisition of equipment are achieved, records are automatically formed, and meanwhile unqualified alarm can be performed as required.
Drawings
FIG. 1 is a schematic view of a front view of an assembly and inspection line layout for a chain tensioner of an automotive engine according to the present invention;
FIG. 2 is a perspective view of the assembly and inspection line layout of the chain tensioner of an automotive engine according to the present invention;
FIG. 3 is a schematic view A-A of FIG. 1;
FIG. 4 is a schematic structural diagram of an embodiment of a tool in a first station and a second station;
FIG. 5 is a schematic structural view of an embodiment of a tooling in a third station and a fourth station;
FIG. 6 is a schematic structural view of an embodiment of a tensioner positioning tool;
FIG. 7 is a tensioner component view;
FIG. 8 is a schematic structural diagram of an embodiment of the airtightness detection head for a housing.
Description of reference numerals:
1-station one; 100. a plunger outer diameter and air tightness detection tool; 101-a first pneumatic measuring instrument; 102-transverse jacking cylinder; 103-plunger outer diameter detecting head; 104-a plunger; 105-a spring; 106-plunger airtightness detection head; 107-vertical hold down cylinders; 108-gas line one; 109-support one; 110-gas line two; 111-support two; labyrinth-121; 122-plunger air tightness detection head core; 123-a sleeve; 124-detecting head hole;
2-station two; 200. a shell inner diameter detection tool; 201-pneumatic measuring instrument two; 202-a housing inside diameter detection head; 203-a housing; 204-a check valve hold-down cylinder; 205-support three; 206-gas line three; 223-one-way valve;
3-station III; 300-a shell air tightness detection tool; 301-shell air-tightness detection head; 302-housing hermetic seal detection hold-down cylinder; 303-gas line four; 304-support four; 305-a headstock; 306-detecting the head stem; 307-sealing ring two;
4-working position four; 400-tensioner detection and assembly tool 401-tensioner positioning tool; 402-a tensioner; 403-tensioner tightness gauge; 404-servo electric cylinder; 405-a pressure sensor; 406-tensioner strut; 407-tensioner spring force detection means; 408-tensioner gas tightness detection head; 409-gas line five; 410-installing a positioning surface; 411-scaffold five; 412 a support surface; 421-latch.
700-operating the platform framework.
Detailed description of the preferred embodiments
The following detailed description of embodiments of the present patent refers to the accompanying drawings.
The upstream referred to in the present invention is in terms of the flow direction of the workpieces of the production line, not the upstream of the geographical position, and refers to the conveying direction of the workpieces, the station from which the workpieces are transferred is the upstream station, the station from which the workpieces are received is the downstream station, and the upstream station and the downstream station may be adjacent stations or have other stations therebetween.
As shown in figures 1-8, the assembly and detection production line of the tensioner consists of 4 stations, namely a station I1, a plunger outer diameter and air tightness detection station; a second station 2 and a shell inner diameter detection station; a third station 3 and a shell air tightness detection station; and a fourth station 4 and a tensioner detection and assembly tool station, wherein the stations are preferably arranged in an operation platform or an operation platform frame, so that the machining process realizes 'one-piece flow' type flow production, and workpieces move according to the set stations to complete all detection and assembly operations.
A first station 1, a plunger outer diameter and air tightness detection station, wherein a plunger outer diameter and air tightness detection tool 100 is arranged at the station and comprises a first pneumatic measuring instrument 101, a plunger air tightness detection head 106 and a plunger outer diameter detection head 103, the plunger air tightness detection head 106 is communicated with the output end of a high-pressure air supply device through a first gas pipeline 108, the first gas pipeline 108 is preferably supported and fixed by a first support 109, a plunger air tightness detection gas flow sensor is arranged in the plunger air tightness detection head 106, the plunger outer diameter detection head 103 is positioned in front of the plunger air tightness detection head and the axial direction of the plunger air tightness detection head is consistent, the plunger outer diameter detection head 103 is supported and fixed by a second support 111, a plunger 104 is transversely arranged on the plunger outer diameter detection head 103 during detection, the height of the plunger outer diameter detection head is moderate, and when the detection is carried out, the height of a detection head hole of the plunger air tightness, The plunger piston can be inserted into the detection head hole for sealing connection, the air tightness detection of the plunger piston is smoothly carried out, one end of a gas pipeline II 110 is connected with the gas inlet end of a plunger piston outer diameter detection head 103, the other end of the gas pipeline II is connected with the gas output end of a pneumatic measuring instrument I101, in order to ensure the accuracy of measurement and the convenience of operation during measurement, a transverse jacking cylinder 102 is arranged in front of the plunger piston outer diameter detection head, a vertical pressing cylinder 107 is arranged above the plunger piston outer diameter detection head, the height of a piston rod of the transverse jacking cylinder 102 is matched with that of the plunger piston, the plunger piston can be axially aligned and upwards jacked together with the plunger piston air tightness detection head 106 to seal the plunger piston in the detection head hole of the plunger piston tightness detection head, the vertical pressing cylinder 107 is positioned above the plunger piston outer diameter detection head, the piston rod of the. In order to realize automatic control, a transverse jacking cylinder and a vertical pressing cylinder position sensor are arranged on the second support, a plunger air tightness detection electromagnetic directional valve is arranged on the first gas pipeline to control the on-off of high-pressure gas, a plunger air tightness detection gas flow sensor collects the gas flow passing through a plunger air tightness detection head 106, and the plunger air tightness detection electromagnetic directional valve can also be a stop valve. The first electromagnetic directional valve of the vertical pressing cylinder, the second electromagnetic directional valve of the transverse pressing cylinder 102 and the plunger air tightness flow detection electromagnetic valve are all in electric signal connection with a signal output end of the control device, the first plunger air tightness detection gas flow sensor and the first pneumatic measuring instrument are respectively in electric signal connection with a signal input end of the control device, and the position sensors of the transverse pressing cylinder and the vertical pressing cylinder are both in electric signal connection with a signal input end of the control device. The control device at least comprises a data analysis and comparison module and a data storage and calculation module. The plunger outer diameter detection and the plunger labyrinth air tightness detection are mainly completed at the station, and the plunger outer diameter, the pressure of the transverse jacking cylinder and the vertical pressing cylinder, and the gas flow and time of the plunger air tightness detection head are recorded. The recording can be done by a pneumatic measuring instrument, by a control device or both.
During detection, a sleeve of the plunger gas tightness detection head is manually taken down, a check valve 223 is arranged in the plunger gas tightness detection head, one end of the check valve is connected with a gas pipeline I, the other end of the check valve is connected with a detection head hole 124 of a plunger gas tightness detection head core 122, the sleeve 123 is sleeved on the sleeve to enable the sleeve to be hermetically connected with one end of the gas pipeline I through a sealing piece and to be hermetically connected with the plunger gas tightness detection head core 122, the plunger gas tightness detection head is hermetically connected with the gas pipeline I, a labyrinth 121 (not shown in figures 1-7) and a spring 105 are manually placed in the plunger hole, then the spring faces the detection head hole 124 of the plunger gas tightness detection head 106 to place the plunger on the plunger outer diameter detection head 103, a start button is pressed, the pneumatic measuring instrument electromagnetic stop valve starts to measure, the outer diameter measured value on the pneumatic instrument is collected after set time is reached, the pneumatic measuring instrument electromagnetic stop valve stops working after data is, and (4) obtaining the outer diameter of the plunger after the ventilation measurement is finished, and uploading the recorded data to the control device by the pneumatic measuring instrument. An electronic air gauge such as ACE300 is preferred for use in the present invention. When the air tightness of the plunger is detected, a first electromagnetic directional valve of a vertical pressing cylinder 107 acts, a piston rod of the vertical pressing cylinder 107 is pressed down to vertically position the plunger, a second electromagnetic directional valve of a transverse pressing cylinder 102 acts after the piston rod of the vertical pressing cylinder 107 is in place, the piston rod of the transverse pressing cylinder 102 extends out to press and seal the plunger and a spring, the action of a stop valve for detecting the air tightness of the plunger after pressing starts to ventilate to detect the air tightness of a plunger labyrinth and a one-way valve 223, gas flow data is recorded after the detection reaches a set time, the ventilation and the detection are stopped after the data is recorded, the transverse pressing cylinder returns to the vertical pressing cylinder to return, one-time detection cycle is completed, and the one-; the gas flow data detected by the plunger gas tightness detecting head 106 is fed back to the control device and recorded and stored by the control device.
And a second station 2, which is a shell inner diameter detection station, is provided with a shell inner diameter detection tool 200, mainly completes shell inner diameter detection, compresses the one-way valve, and presses the one-way valve into the shell 203. The pneumatic measuring instrument comprises a second pneumatic measuring instrument 201, a one-way valve pressing cylinder 204 and a shell inner diameter detecting head 202, wherein the shell inner diameter detecting head 202 is communicated with a third gas output pipeline 206 of the second pneumatic measuring instrument 201 through a third gas pipeline 206, the shell inner diameter detecting head 202 is fixedly arranged on a third support 205, the one-way valve pressing cylinder 204 is arranged above the shell inner diameter detecting head, and a piston rod of the one-way valve pressing cylinder is arranged downwards and coaxially with the shell inner diameter detecting head. The second pneumatic measuring instrument 201 is electrically connected with the input end of the control device. During operation, the one-way valve is manually placed on the shell inner diameter detection head 202, then the shell 203 is sleeved, the starting button is pressed, the inner diameter measurement stop valve arranged on the gas pipeline 3 acts, inner diameter measurement ventilation is carried out, after the set time is reached, the measured shell inner diameter data is recorded by the pneumatic measuring instrument II, the data is uploaded to the control device, and the stop valve acts to stop ventilation measurement after the set time is finished; a reversing valve of a check valve pressing cylinder is opened, a piston rod of the check valve pressing cylinder is pressed downwards to press the check valve into the shell 203, and the check valve pressing cylinder 204 returns after the press mounting reaches the set time to complete one press mounting detection cycle; and comparing the detected data of the outer diameter of the plunger and the inner diameter of the shell by the control device to calculate the fit clearance between the inner diameter of the shell and the outer diameter of the plunger, judging whether the fit clearance is qualified or not, and giving out a prompt, such as a buzzing alarm, if the fit clearance is not qualified.
And a third station 3, which is a shell airtightness detection station, and is provided with a shell airtightness detection tool 300, which comprises a shell airtightness detection head 301 and a shell airtightness detection pressing cylinder 302, wherein the shell airtightness detection head 301 is arranged on a support seat IV 304, the shell airtightness detection head 301 is vertically arranged, the shell airtightness detection pressing cylinder 302 is positioned above the shell airtightness detection head 301, a piston rod of the shell airtightness detection pressing cylinder is coaxially arranged with the shell airtightness detection head 301, the shell airtightness detection head 301 is communicated with an output pipeline of the high-pressure gas supply device through a gas pipeline IV 303, and a shell airtightness detection gas flow sensor of the shell airtightness detection head 301 is in electric signal connection with an input end of a control device. The reversing valve of the shell air-tightness detection pressing cylinder 302 and the shell air-tightness measurement stop valve are respectively electrically connected with the output end of the control device, when the shell air-tightness detection device is operated, a shell is manually sleeved on the shell air-tightness detection head, the starting button is pressed, the shell air-tightness detection pressing cylinder 302 moves along with the reversing valve of the shell air-tightness detection pressing cylinder 302, the shell moves downwards when the shell air-tightness detection pressing cylinder 302 presses the shell, the shell air-tightness measurement stop valve moves to ventilate after the shell air-tightness detection pressing cylinder reaches the set time, flow data on the shell air-tightness detection gas flow sensor starts to be recorded after the ventilation reaches the set time, the shell air-tightness measurement stop valve moves to stop ventilation after the ventilation is completed, then the shell air-tightness. And uploading the detected data to the control device. The shell airtightness detection head 301 is preferably configured such that the detection head is provided with a vent hole leading from one end of the shell airtightness detection head to the other end thereof, the outer circumferential surface of the detection head is stepped, the large-diameter end is a head seat 305 of the shell airtightness detection head, the small-diameter end is a detection head rod 306, the outer diameter of the detection head rod matches the inner diameter of the plunger hole of the shell, and a second sealing ring 307 is provided at the detection head rod. When the gas detection device is used, the shell is sleeved outside the detection rod and is in sealed connection with the shell plunger hole, and the head seat is in sealed connection with the gas pipeline III.
And the fourth step 4 is a tensioner detection and assembly station. The tensioner detection and assembly tool 400 is arranged and comprises a tensioner positioning tool 401, a tensioner air tightness measuring instrument 403 and a tensioner spring force detection device 407, wherein a tensioner air tightness detection head of the tensioner air tightness measuring instrument 403 is arranged on the tensioner positioning tool 401, the tensioner air tightness measuring instrument 403 is connected with the tensioner air tightness detection head through a gas pipeline five 409, gas is supplied to the tensioner air tightness detection head (not shown in the figure), the detected pressure and the gas flow in the tensioner are recorded, a servo electric cylinder 404 is arranged above the tensioner positioning tool, a pressure sensor 405 is arranged on a piston rod of the servo electric cylinder 404, the pressure sensor 405 is arranged between the piston rod of the servo electric cylinder and a tensioner pressing rod 406, and the tensioner pressing rod 406 is arranged opposite to the tensioner air tightness detection head. The tensioner airtightness measuring instrument 403 and the pressure sensor 405 are respectively electrically connected with the input end of the control device, and the servo electric cylinder is electrically connected with the control device. The control device at least comprises a calculation, analysis and comparison module and a record storage module, the control device collects, records and stores the displacement of the piston rod of the servo electric cylinder, collects the pressure of the pressure sensor at the corresponding position, and compares the collected pressure value and the displacement value with the displacement and pressure value stored in the control device.
During detection, a plunger assembly detected at a station I and a shell assembly detected at a station II and a station III are manually assembled to obtain a pre-assembled tensioner 402, then the pre-assembled tensioner is clamped on a tensioner positioning tool 401 at a station IV and positioned by the tensioner positioning tool 401, during installation, the pre-assembled tensioner is pressed by taking the fact that an air outlet cavity opening of the tensioner needs to be aligned with an installation positioning surface 410, 0.2MPa compressed gas is introduced, a tensioner airtightness measuring instrument 403 measures the airtightness of the tensioner and records gas flow data flowing out of a one-way valve, an electric signal output end of the airtightness measuring instrument is electrically connected with an electric signal input end of a control device, and the recorded data are uploaded to the control device; starting the servo electric cylinder 404, enabling the piston rod of the servo electric cylinder 404 to quickly descend, recording the initial position I or the stroke of the piston rod at the moment by the servo electric cylinder when the piston rod contacts the plunger 104 to generate pressure to judge whether the labyrinth is neglected to be installed or not, stopping detection and giving a prompt if the labyrinth is neglected to be installed, continuously pressing the servo electric cylinder to the fixed point position II to record the spring load pressure value if the labyrinth is not neglected to be installed, continuously pressing the servo electric cylinder to the fixed point position III to record the spring load pressure value, continuously pressing the servo electric cylinder to the fixed point position IV to record the spring load pressure value, then quickly returning the servo electric cylinder to the position I to record the pressure value, pressing the servo electric cylinder to the position IV to stay, connecting the servo electric cylinder and the control device through a data line, analyzing and judging whether the received data is not, sending an alarm sound if the data is unqua, after the bolt is inserted, the micro switch acts to servo the electric cylinder to return, the tensioner is manually dismounted, and one detection cycle is completed. The tensioner gas tightness detection head may adopt the same structure as the case gas tightness detection head.
In the invention, in order to realize high-precision online automatic detection and data acquisition, a high-precision sensor and a control valve are selected for detection and control, so that online high-precision automatic detection of various sizes, air tightness of parts and spring load force values of the tensioner is realized. If the device adopts a high-precision pressure reducing valve with the precision of 0.01-0.4 MPa, a high-precision gas flow control valve with the precision of 0.5-25L/min, a high-precision electronic digital display pressure sensor with the precision of 0.01MPa, a high-precision pneumatic measuring instrument with the size detection precision of 0.001mm and a high-precision gas flow sensor with the precision of 0.01L/min, the assembly and detection precision can be ensured. The pressure sensor is preferably a weighing sensor, such as a model DYFL-102, and the measurement accuracy can reach 0.01 MPa. And introducing 0.1MPa compressed air when the airtightness of the plunger is detected, introducing 0.2MPa compressed air when the airtightness of the shell is detected, and introducing 0.2MPa compressed air into the plunger hole when the airtightness of the tensioner is detected.
In the present invention, it is preferable that each production line is disposed in the same table frame 700, and the stations are sequentially arranged from front to back on the table, and the assembly and inspection of one tensioner is completed by one or two operators. Each station can also be arranged by taking the station four as a center, for example, the station one is arranged on one side of the station four, the station two and the station three are arranged on the other side of the station four, the station three is adjacent to the station four, the station one is adjacent to the station four, and the station three is arranged between the station two and the station four. This arrangement can be operated by three operators.
In the present invention, the tensioner fixing device preferably adopts a structure including a bracket five 411, the upper surface of the bracket five is provided with an installation positioning surface 410, a supporting surface 412 is arranged perpendicular to the positioning surface, a connecting hole is arranged on the supporting surface corresponding to the positioning hole on the tensioner, the tensioner passes through the positioning hole and the connecting hole through a bolt to be fixedly connected, the air outlet of the tensioner is aligned with the installation positioning surface 410 during fixing, the installation positioning surface is provided with an air tightness detecting hole, and the air tightness detecting head of the tensioner is positioned in the air tightness detecting hole. When the unqualified products need to be subjected to alarm prompt, an alarm module is arranged on the control device to perform alarm prompt.
Claims (8)
1. The utility model provides an automobile engine chain tensioning ware equipment, detection production line which characterized in that: the plunger air tightness detection device comprises a first station, a second station, a third station and a fourth station which are positioned in the same operation space, wherein a plunger outer diameter and air tightness detection tool is arranged in the first station;
a shell inner diameter detection tool is arranged in the station II, the shell inner diameter detection tool completes shell inner diameter detection, and the check valve is installed in a plunger hole of the shell through the shell inner diameter detection tool;
a shell sealing detection tool is arranged in the third station to finish shell sealing detection;
a tensioner detection and assembly tool is arranged in the station IV, and comprises a tensioner air tightness measuring instrument, a tensioner air tightness detecting head and a tensioner spring load pressure detector, wherein the tensioner spring load pressure detector is used for detecting the tensioner spring load pressure and pressing the plunger into the plunger hole of the shell;
also comprises a control device, the control device at least comprises a data storage calculation module and an alarm prompt module,
the pneumatic measuring instrument I, the plunger air-tightness flow sensor, the pneumatic measuring instrument II, the shell air-tightness flow sensor, the tensioner air-tightness measuring instrument and the tensioner spring load pressure detector of the plunger outer diameter and air-tightness detecting tool are respectively and electrically connected with the input end of the control device, the control device receives plunger outer diameter size sent by the pneumatic measuring instrument I and shell inner diameter size sent by the pneumatic measuring instrument II, stores and compares the plunger outer diameter size and the tensioner air-tightness measuring instrument inner diameter size and judges whether the fit clearance meets the requirements or not, and when the plunger outer diameter size and the tensioner air-tightness measuring instrument inner diameter size do not meet the requirements, the control device receives gas flow which flows through a plunger inner hole and is sent by the plunger air-tightness flow sensor, gas flow.
2. The assembly and detection production line of the automobile engine chain tensioner as claimed in claim 1, wherein: the plunger outer diameter and air tightness detection tool comprises a plunger outer diameter detection device and a plunger air tightness detection device, the plunger outer diameter detection device comprises a first pneumatic measuring instrument and a plunger outer diameter detection head, a gas outlet of the first pneumatic measuring instrument is communicated with the plunger outer diameter detection head through a gas output pipeline, and the plunger outer diameter detection head is supported through a first support; the plunger air tightness detection device comprises a plunger air tightness detection head and a second support, the plunger air tightness detection head is supported and fixed by the second support, the plunger air tightness detection head is communicated with an air outlet of the high-pressure air supply device through a second gas pipeline, the plunger air tightness detection head is positioned on one side of the plunger outer diameter detection head, a transverse jacking cylinder is arranged on the other side of the plunger outer diameter detection head, when the plunger is positioned on the plunger outer diameter detection head, a piston rod of the plunger and the transverse jacking cylinder is coaxially arranged with the plunger air tightness detection head, a vertical pressing cylinder is arranged above the plunger outer diameter detection head, and a piston rod of the vertical pressing cylinder is arranged towards the plunger outer diameter detection head; the gas pipeline II and/or the plunger gas tightness detection head are/is provided with a gas tightness flow detection solenoid valve and a plunger gas tightness flow sensor, the vertical pressing cylinder, the transverse pressing cylinder and the gas tightness flow detection solenoid valve are all in electric signal connection with the output end of the control device, and the plunger gas tightness flow sensor and the pneumatic measuring instrument I are respectively in electric signal connection with the input end of the control device; the detected data is recorded.
3. The assembly and detection production line of the automobile engine chain tensioner as claimed in claim 1, wherein: the shell inner diameter detection tool comprises a second pneumatic measuring instrument and a shell inner diameter detection head, the shell inner diameter detection head is supported and fixed by a third support, the shell inner diameter detection head is communicated with a gas outlet of the second pneumatic measuring instrument through a third gas pipeline, a check valve pressing cylinder is arranged above the shell inner diameter detection head, and a piston rod of the check valve pressing cylinder is arranged towards the shell inner diameter detection head.
4. The assembly and detection production line of the automobile engine chain tensioner as claimed in claim 1, wherein the housing tightness detection tool comprises a housing tightness detection head and a third support, the housing tightness detection head is supported and fixed by the third support, the housing tightness detection head is communicated with the high-pressure gas supply device through a gas pipeline four, a housing tightness detection pressing cylinder is arranged above the housing tightness detection head, and a piston rod of the housing tightness detection pressing cylinder faces the housing tightness detection head; and a gas tightness measuring electromagnetic valve is arranged on the gas pipeline IV, and the shell gas tightness measuring electromagnetic valve and the shell gas tightness detecting pressing cylinder are respectively connected with the control device through electric signals to record a detection result.
5. The assembly and detection production line of the automobile engine chain tensioner as claimed in claim 1, wherein: the tensioner gas tightness measuring instrument is connected with the tensioner gas tightness detecting head through a gas pipeline five, the tensioner spring load pressure detector comprises a tensioner positioning tool, a servo electric cylinder, a tensioner pressing rod and a pressure sensor, a piston rod of the servo electric cylinder is arranged downwards and is opposite to the tensioner positioning tool, the tensioner pressing rod is arranged on the piston rod of the servo electric cylinder, the pressure sensor is arranged between the tensioner pressing rod and the servo electric cylinder, and the tensioner gas tightness detecting head is arranged on the tensioner positioning tool and is coaxial with the tensioner piston rod.
6. The assembly and detection production line of the automobile engine chain tensioner as claimed in claim 5, wherein: tensioner location frock includes support five, and the upper surface of support five is provided with the locating surface, is provided with the holding surface with the locating surface is perpendicular, and the holding surface is last to be provided with the connecting hole with tensioner last locating hole position and size correspondence, and tensioner passes through bolt and holding surface fixed connection, is provided with the gas tightness inspection hole on the locating surface, and tensioner gas tightness detection head is located this gas tightness inspection hole, and the locating surface is located tensioner depression bar below.
7. The method for assembling and detecting the chain tensioner of the automobile engine is characterized by comprising the steps of detecting a tensioner spring and a spring load force, detecting the tensioner by the following method, assembling a plunger assembly qualified by detection and a shell assembly qualified by detection together, detecting whether the tensioner is provided with the spring and the pressure of the spring by adopting a servo electric cylinder provided with a pressure sensor, recording the initial displacement of a piston rod of the servo electric cylinder when the servo electric cylinder generates the pressure, comparing the initial displacement with a standard initial displacement set in a control device, judging whether a labyrinth is arranged, judging that the labyrinth is arranged when the initial displacement of the piston rod meets the requirement, judging that no labyrinth is arranged if the labyrinth is not met, if the labyrinth is not arranged, finishing the detection, if the labyrinth is arranged, continuously pressing the piston rod to the position of each detection point, recording the spring load force detected by the pressure sensor at the position of each, and comparing the spring load force detected by the pressure sensor at each detection point with the standard spring load force corresponding to each detection point to judge whether the load force of the spring on the tensioner is qualified or not, sending a prompt tone when the load force of the spring on the tensioner is unqualified, and completing the assembly and detection work of the tensioner by inserting the bolt into the bolt hole when the load force of the spring on the tensioner is qualified.
8. The assembling and testing method of the chain tensioner of the automobile engine as claimed in claim 7, wherein the assembling and testing of the plunger assembly and the housing assembly are performed by placing the spring and the labyrinth in the inner bore of the plunger, testing the outer diameter of the plunger by the first pneumatic tester and the first plunger outer diameter testing head, recording and storing the tested outer diameter of the plunger by the control device, testing the airtightness of the plunger by the first plunger airtightness testing head, pressing the spring and the labyrinth into the inner bore of the plunger at the same time, transmitting the gas flow rate of the flow path of the inner bore of the plunger, which is tested by the airtightness flow rate sensor of the plunger airtightness testing head, to the control device, and recording and storing the gas flow rate by the control device; the inner diameter of a plunger hole of the shell is detected through a pneumatic measuring instrument II and the inner diameter detection head of the shell, a one-way valve is placed on the inner diameter detection head of the shell, the shell is sleeved to enable the plunger hole of the shell to be matched and connected with the inner diameter detection head of the shell, a shell airtightness detection gas flow sensor of the shell airtightness detection tool detects the flow of gas flowing through the plunger hole of the shell, the gas flow is transmitted to a control device to be recorded and stored, then the one-way valve is pressed into the plunger hole of the shell to obtain a shell assembly, the control device judges whether the fit between the plunger outer diameter and the shell inner diameter is qualified or not according to the received information of the plunger outer diameter and the shell inner diameter, if the detection is not qualified, sending a prompt to finish the detection, if the detection is qualified, detecting the air tightness of the shell by using a shell air tightness detecting head, and transmitting the gas flow which flows through the plunger hole of the shell and is detected by a shell air tightness flow sensor of the shell air tightness detecting head to a control device for recording and storing; and assembling the plunger assembly and the shell assembly together to obtain the tensioner, measuring the air tightness of the tensioner by using a tensioner air tightness measuring instrument, and transmitting the gas flow which flows through the plunger hole of the tensioner and is measured by the tensioner air tightness measuring instrument to a control device, storing and recording.
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