CN104848806B - A kind of valve retainer positive and negative detection means - Google Patents
A kind of valve retainer positive and negative detection means Download PDFInfo
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- CN104848806B CN104848806B CN201510287311.5A CN201510287311A CN104848806B CN 104848806 B CN104848806 B CN 104848806B CN 201510287311 A CN201510287311 A CN 201510287311A CN 104848806 B CN104848806 B CN 104848806B
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- shadow shield
- test bar
- seat ring
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Abstract
The present invention relates to a kind of valve retainer positive and negative detection means, it includes the main support of a setting, the top of main support and the cylinder barrel of a cylinder are fixed, the piston rod of cylinder is fixedly connected upward and with the right-hand member of a support I, the left part axial clearance of support I passes through a test bar, the lower end of test bar is detection head, the spring of compressive state is cased with test bar between detection head and support I, the top of test bar is fixed with limiting gasket, there is a gripping block being fixed on test bar above limiting gasket, the right-hand member of gripping block is provided with pre-and post perforative stopper slot；Support II is fixed with the middle part of support I, the left end of support II has the pin II of a fore-and-aft direction, and pin II is rotatably connected to before and after a shadow shield, a pin I through the left part of stopper slot and shadow shield, the right-hand member of support II has optoelectronic switch, and the right-hand member correspondence optoelectronic switch of shadow shield has thang-kng groove.Present solution provides the high seat ring positive and negative detection means of a kind of mechanical contact, reliability.
Description
Technical field
The present invention relates to engine cylinder cap valve retainer technology of pressure mounting, specifically a kind of valve retainer positive and negative detection dress
Put.
Background technology
Press-fiting for engine cylinder cover seat ring is one of critical process in engine cylinder cover production process, the matter press-fited
Measure and the accuracy that press-fits is directly connected to the quality and cost of engine.To improve automaticity and the production of seat ring assembling
Efficiency, reduces the percent defective of cylinder cap, and full-automatic press-fitting machine automatic transport seat ring, and automatic decision seat are more used at present
Chamfering direction on circle, according to press-in seat ring bottom hole is correctly oriented, the method for generally judging seat ring chamfering direction is by shaking
The mode of Moving plate, but the differentiation rate of this mode is not high.Also there is the side that chamfering in seat ring is detected by using light sensor arrangement
Formula distinguishes the positive and negative of seat ring, and the positive endoporus of seat ring has chamfering, and the endoporus of reverse side is radiated in seat ring without chamfering by light beam
On bore edges, whether measuring beam is by judging the presence or absence of inner bore chamfering, so as to judge the positive and negative of seat ring.But due to seat ring
On chamfering is small, accuracy of detection requires that high, detection is generally disturbed by mist of oil in surrounding air and dust, cause detection inaccurate,
There is a situation where erroneous judgement.Therefore, above two mode is difficult in actual production very distinguishes the positive and negative of seat ring.
Therefore, the Y of CN 201225886 disclose a kind of seat ring both forward and reverse directions identifying device, its structure is on cylinder I I
Equipped with probe, equipped with frame of issuing an order on probe；Frame of issuing an order keeps accessible distance with displacement transducer contact, and cylinder I I, which drives, to be visited
Head and frame reciprocating motion of issuing an order, detection signal can all be produced by often compressing primary transducer contact, and sensor is according to cylinder I I row
Journey and setting program judge the both forward and reverse directions and/or special-shaped seat ring of seat ring；Slideway II and slideway III has drop, slideway III and cunning
Road I also has drop, it is ensured that arm-tie II continuous conveyings seat ring and the continuous output seat rings of arm-tie I；Test result is correct, and cylinder VI drives
Push pedal II shifts seat ring in material road onto；Test result mistake and/or be special-shaped seat ring, cylinder I V drives pumping board to retract, and seat ring falls
Into pulp-collecting box, the identification of seat ring both forward and reverse directions and/or special-shaped seat ring is realized, so as to improve automaticity and production effect
Rate.But because the chamfering on seat ring is small, because the displacement difference value that seat ring chamfering is brought is one micro in the program, this requirement
Accuracy of detection reach it is very high, detection signal change could be differentiated that this is too high to equipment precision requirement by program, in actual use
During critical constraints.
The content of the invention
It is an object of the invention to provide a kind of valve retainer positive and negative detection means, its is practical, accurately can may be used
The positive and negative of seat ring is detected by ground.
Technical scheme is as follows：
A kind of valve retainer positive and negative detection means, it includes the main support of a setting, the top of main support and a cylinder
Cylinder barrel fix, the piston rod of cylinder is fixedly connected upward and with the right-hand member of a support I, and the left part axial clearance of support I is worn
A test bar is crossed, the lower end of test bar is detection head, and the bottom of detection head is top truncated cone directed downwardly, detection head lower end
The diameter in face is less than the diameter of seat ring front bore orifice and more than the diameter of seat ring reverse side bore orifice, detection head and support I
Between test bar on be cased with the spring of compressive state, the top of test bar is fixed with limiting gasket, limiting gasket limitation detection
There are a gripping block being fixed on test bar, the right side of gripping block above the displacement that rod opposite brackets I are moved downward, limiting gasket
End is provided with pre-and post perforative stopper slot；Support II is fixed with the middle part of support I, the left end of support II has the pin of a fore-and-aft direction
Son II, pin II is located at the right of stopper slot, and pin II is rotatably connected to a shadow shield, before and after a pin I through stopper slot and
The left part of shadow shield, the right-hand member of support II has an optoelectronic switch, the right-hand member of shadow shield be located at the beam emissions end of optoelectronic switch with
Between beam reception end, the right-hand member of shadow shield has pre-and post perforative thang-kng groove；The process that support I is moved down is driven in cylinder
In, support I drives test bar to move down by compression spring, and it is static that test bar moves down the insertion positive endoporus of seat ring；
Gripping block opposite brackets II are moved up when support I continues to move down, and pin I, which is limited in stopper slot, to move right, shading
Plate with pin II be rotating shaft rotationally clockwise；During cylinder to stroke end, the light beam of optoelectronic switch passes through the logical of shadow shield
Light groove.
Further, the support II is inverted L-shaped, and left part lower end and the bolt of support I of support II are fixed, the top of support II
Be provided with U-shaped mounting groove in left-right direction, the top of support II is separated into forward and backward side plate by U-shaped mounting groove, shadow shield be located at before,
Between back side panel and parallel with forward and backward side plate, the pin II passes through forward and backward side plate and shadow shield, and the light beam of optoelectronic switch is sent out
Penetrate end to be arranged on front side board, the beam reception end of optoelectronic switch is arranged on back side panel.
Further, the shadow shield is the following shading otic placode that each extends outwardly out on stripe board, its right-hand member.
Further, the distance of shadow shield thang-kng groove to the pin II be set to pin I to twice of the distance of pin II with
On.
Further, the cone angle of the detection head truncated cone is 1.5 ~ 2 times of seat ring inner bore chamfering.
This programme makes test bar insert seat ring endoporus two respectively by detection head and the contoured design at seat ring inner bore chamfering end
The depth inserted during end is different, and thus the upward displacement of test bar opposite brackets I is different.Further through pin I, pin II, folder
Tight block, support II, shadow shield, the upward displacement of test bar opposite brackets I are converted into the rotational angle of shadow shield.Photoelectricity is opened
Whether the light beam of pass judges the positive and negative of seat ring by the thang-kng groove of shadow shield, makes testing result directly clear and definite, overcomes down
Angle value is smaller and the problem of be difficult to accurate detection.Because detection head and seat ring endoporus are mechanical type contact, not by environment mist of oil and
Dust is disturbed, and signal is reliable；The transmission for two hinge movements pair that the displacement signal of test bar is constituted by pin I, pin II
After be exaggerated, system judge accuracy improve.
The distance of shadow shield thang-kng groove to the pin II of this detection means be set to pin I to twice of the distance of pin II with
On, the amplification effect of displacement signal is further enhanced, result is more conducively differentiated.And be that right-hand member sets shading otic placode guarantor in shadow shield
Card light beam only passes through in thang-kng groove, it is to avoid cause misjudgment.The cone angle of detection head truncated cone is seat ring inner bore chamfering
1.5 ~ 2 times, detection head can be made to try one's best the insertion seat ring endoporus stretched into, when making detection seat ring positive and negative, displacement difference becomes apparent from.
This programme is directed to traditional seat ring and press-fits the drawbacks of process is present, the high seat of the contact that designs a mechanism, reliability
Positive and negative detection means is enclosed, with mechanical structure is highly reliable, clever structure, detects that in stable condition, error rate is low, practical
The advantages of, improve the qualification rate and equipment dependability of product.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is Fig. 1 front view；
Fig. 3 is the secondary structural representation of hinge movement of the present invention；
Fig. 4 is Fig. 3 right view；
Fig. 5 is the structural representation of shadow shield of the present invention；
Detection head and the partial structural diagram of seat ring when Fig. 6 is detection front seat ring；
Shadow shield and optoelectronic switch position view when Fig. 7 is detection front seat ring；
Detection head and the partial structural diagram of seat ring when Fig. 8 is detection reverse side seat ring；
Shadow shield and optoelectronic switch position view when Fig. 9 is detection reverse side seat ring.
Description of reference numerals：1- test bars；101- detection heads；2- springs；3- supports I；4- limiting gaskets；5- gripping blocks；
52- stopper slots；6- pins I；7- pins II；8- supports II；81- transmitting terminals；82- receiving terminals；83- light beams；84- front side boards；
85- back side panels；9- shadow shields；91- thang-kng grooves；92- shading otic placodes；10- optoelectronic switches；11- cylinders；12- main supports；13-
Circle.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As depicted in figs. 1 and 2, the main support 12 of this detection means is fixed on detection now for the frame bolt of whole device
, the cylinder body of cylinder 11 is bolted on main support 12, tailpiece of the piston rod and the right-hand member bottom bolts of support I 3 of cylinder 11
Fixed, the left end of support I 3 sets the through hole of an above-below direction, and test bar 1 is penetrated in through hole and coordinated with via clearance can be along through hole
Move up and down, the detection head 101 of test bar 1 just to seat ring 13 to be detected, test bar 1 be in support I 3 and detection head 101 it
Between part be cased with spring 2, spring 2 is in compressive state, and I 3 time pressing springs of support 2 are so as to driving detection head 101 descending with contact
Seat ring 13.Limiting gasket 4 is fixed on test bar 1 and is pressed on the upper surface of support I 3, the resilience of spring 2 when limit bracket I 3 is up
The playback of test bar 1 afterwards.Gripping block 5 drives shadow shield 9 to be axis of rotation with pin II 7 when test bar 1 is moved, by test bar
Displacement on 1 vertical direction is converted into the angle of the rotation of shadow shield 9, as shown in Figure 3.The detection head 101 of test bar 1 uses seat ring
The imitated structure at 13 inner bore chamfering ends, as shown in Figure 6 and Figure 8, bottom are truncated cone, and top is in cylinder, seat ring 13
Hole two-end structure is different, and there is chamfering one end, and the other end can be only inserted into falling for endoporus just without chamfering, the size of detection head 101
In the section of angle, the depth inserted when inserting 13 endoporus two ends of seat ring respectively is different, therefore moved straight down during the detection of test bar 1
Displacement is different.The descending stroke of present apparatus cylinder 11 is certain, and the position of seat ring 13 is also certain, and during the detection of test bar 1
Descending displacement is different, is that the up displacement of opposite brackets I 3 is not when touching the positive and negative of seat ring 13 for test bar 1
Together, the angle for driving shadow shield 9 to rotate is also different.Thus design when under cylinder 11 to stroke end, the light of optoelectronic switch 10
What whether beam 83 screened the insertion of detection head 101 by thang-kng groove 91 is which face of seat ring 13.
When using this detection means, the structure of detecting system is can be automated, cylinder 11 is controlled by existing inspection
Instruction system is surveyed, optoelectronic switch 10 is connected with detection instruction system, and seat ring 13 to be detected is passed successively by existing transmission equipment
It is delivered to the underface of detection head 101.When design seat ring 13 is face-up, cylinder 11 to stroke end, the light beam of optoelectronic switch 10
83 pass through thang-kng groove 91 just；And the reverse side of seat ring 13 upward when, the light beam 83 of optoelectronic switch 10 is blocked plate 9 and blocked.
The chamfered end of the endoporus of seat ring 13 upward when, as shown in Figure 6 and Figure 7, when cylinder 11 receives instruction, piston rod is transported downwards
It is dynamic, and drive test bar 1 to move downward, the detection head 101 of test bar 1 inserts the inner bore chamfering part of seat ring 13, now detects
Rod 1 stops moving downward, but cylinder 11 continues to drive during support I 3 is moved downwardly to stroke end, and test bar 1 is by band
The dynamic motion upwards of opposite brackets I 3 of gripping block 5.Gripping block 5 gives I 61 upward thrusts of pin, and pin I 6 can only be in gripping block 5
Stopper slot 52 in move left and right, shadow shield 9 is rotated clockwise around pin II 7 in the presence of thrust, and cylinder 11 is moved downward
During to stroke end, signal is produced when the light beam 83 of optoelectronic switch 10 is by thang-kng groove 91 on shadow shield 9, optoelectronic switch 10 leads to
Cross cable and send the signal to detection instruction system, the signal and cylinder 11 that detection instruction system receives optoelectronic switch 10 are downward
Move to the signal of stroke end, judge the endoporus of seat ring 13 chamfered end upwards, the positive and negative inspection of seat ring 13 passes through, cylinder 11 to
On move back into original position, into next time it is positive and negative detection circulation.
The chamfered end of the endoporus of seat ring 13 down when, as shown in Figure 8 and Figure 9, when cylinder 11 receives instruction, piston rod is transported downwards
It is dynamic, and drive test bar 1 to move downward, because the endoporus of seat ring 13 without chamfered end upwards, the endoporus aperture ratio detection head 101 of seat ring 13
Diameter is small, can not insert the endoporus of seat ring 13 after the contact end face of seat ring 13 of detection head 101, now test bar 1 stops moving downward, but
During the continuation drive support I 3 of cylinder 11 is moved downwardly to stroke end, test bar 1 will drive the opposite brackets I 3 of gripping block 5
Motion upwards.Clamping plate gives pin I 61 upward thrusts, and shadow shield 9 is around the dextrorotation of pin II 7 in the presence of thrust
Turn, the up displacement of the opposite brackets I 3 of test bar 1 is larger when contacting 13 reverse side of seat ring because of detection head 101, so shadow shield 9 rotates
Angle it is also larger, when cylinder 11 is moved downwardly to stroke end, the light beam 83 of optoelectronic switch 10 is blocked plate 9 and blocked, photoelectricity
Signal will not be produced by opening the light.Now, detection instruction system receives the signal that cylinder 11 is moved downwardly to stroke end, but does not connect
Receive the signal of optoelectronic switch 10 feedback, system judge the endoporus of seat ring 13 without chamfered end upward, the positive and negative of seat ring 13 inspection it is obstructed
Cross, automatically reject seat ring 13, into positive and negative detection circulation next time.
In this programme, the bottom of detection head 101 of test bar 1 is truncated cone, for make as far as possible detection head 101 deeper into
Fillet surface is touched, the cone angle of truncated cone is not more than 2 times of chamferings, can use 1.5 ~ 2 times of chamferings.
The support II 8 is inverted L-shaped, and left part lower end and the bolt of support I 3 of support II 8 are fixed, the top edge of support II 8
Left and right directions is provided with U-shaped mounting groove, and the top of support II 8 is separated into front side board 84, back side panel 85 by U-shaped mounting groove, such as Fig. 4 institutes
Show.Front side board 84, back side panel 85 in addition to left end is connected as one by the longitudinal component of support II 8 every sky, to ensure shadow shield 9
It is unobstructed in rotation process.Shadow shield 9 is the strip thin plate on vertical plane, and shadow shield 9 is located at front side board 84, back side panel 85
Between and it is parallel with front side board 84, back side panel 85, pin II 7 is fixed on shadow shield 9, pin II 7 pass through front side board 84, rear side
Plate 85 and shadow shield 9, the transmitting terminal 81 of light beam 83 of optoelectronic switch 10 are arranged on front side board 84, and the light beam 83 of optoelectronic switch 10 connects
Receiving end 82 is arranged on back side panel 85.
Shadow shield 9 is in rotation process, it is preferred that except thang-kng groove 91 makes the light beam 83 of optoelectronic switch 10 in addition to, remaining
Situation should stop passing through for light beam 83, therefore, the following shading otic placode 92 that each extends outwardly out on its right-hand member, as shown in Figure 5.For
Ensure the rotation amplitude of the right-hand member of shadow shield 9, detection head 101 is contacted the less displacement difference of the positive and negative of seat ring 13 and be exaggerated, hide
The distance of tabula rasa 9 thang-kng groove 91 to pin II 7 sets at least to pin I 6 to twice of the distance of pin II 7, reaches an amplification
In the case of the effect of rotating effect, the Small-angle Rotation of shadow shield 9, the thang-kng groove 91 of right-hand member can also have larger rotation amplitude, carry
The accuracy rate that height differentiates.
Claims (5)
1. a kind of valve retainer positive and negative detection means, it is characterised in that：
Include a main support erect, the top of main support and the cylinder barrel of a cylinder fix, the piston rod of cylinder is upward and with one
The right-hand member of support I is fixedly connected, and the left part axial clearance of support I passes through a test bar, and the lower end of test bar is detection head, inspection
The bottom of gauge head is top truncated cone directed downwardly, and the diameter of detection head lower surface is less than the diameter of seat ring front bore orifice
And more than the diameter of seat ring reverse side bore orifice, the spring of compressive state, inspection are cased with the test bar between detection head and support I
The top for surveying rod is fixed with limiting gasket, and limiting gasket limits the displacement that test bar opposite brackets I are moved downward, limiting gasket
There is a gripping block being fixed on test bar top, and the right-hand member of gripping block is provided with pre-and post perforative stopper slot；
Support II is fixed with the middle part of support I, the left end of support II has the pin II of a fore-and-aft direction, and pin II is located at spacing
The right of groove, pin II is rotatably connected to before and after a shadow shield, a pin I through the left part of stopper slot and shadow shield, support
II right-hand member has optoelectronic switch, and the right-hand member of shadow shield is located between the beam emissions end of optoelectronic switch and beam reception end, shading
The right-hand member of plate has pre-and post perforative thang-kng groove；
During cylinder drives support I to move down, support I drives test bar to move down by compression spring, detects
It is static that rod moves down the insertion positive endoporus of seat ring；Gripping block opposite brackets II are moved up when support I continues to move down,
Pin I, which is limited in stopper slot, to move right, shadow shield with pin II be rotating shaft rotationally clockwise；Cylinder is to stroke end
When, the thang-kng groove that the light beam of optoelectronic switch passes through shadow shield.
2. a kind of valve retainer positive and negative detection means according to claim 1, it is characterised in that：The support II is
L-shaped, left part lower end and the bolt of support I of support II are fixed, and the top of support II is provided with U-shaped mounting groove, U-shaped peace in left-right direction
The top of support II is separated into forward and backward side plate by tankage, and shadow shield is located between forward and backward side plate and, institute parallel with forward and backward side plate
Pin II is stated through forward and backward side plate and shadow shield, the beam emissions end of optoelectronic switch is arranged on front side board, the light of optoelectronic switch
Beam receiving terminal is arranged on back side panel.
3. a kind of valve retainer positive and negative detection means according to claim 1 or 2, it is characterised in that：The shadow shield
For stripe board, the following shading otic placode that each extends outwardly out on its right-hand member.
4. a kind of valve retainer positive and negative detection means according to claim 3, it is characterised in that：The shadow shield thang-kng
The distance of groove to pin II is set to pin I to more than twice of the distance of pin II.
5. a kind of valve retainer positive and negative detection means according to any one of claim 1,2,4, it is characterised in that：Institute
The cone angle for stating detection head truncated cone is 1.5 ~ 2 times of seat ring inner bore chamfering.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510287311.5A CN104848806B (en) | 2015-05-29 | 2015-05-29 | A kind of valve retainer positive and negative detection means |
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| CN201510287311.5A CN104848806B (en) | 2015-05-29 | 2015-05-29 | A kind of valve retainer positive and negative detection means |
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| CN104848806B true CN104848806B (en) | 2017-08-25 |
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| CN110921267A (en) * | 2019-12-31 | 2020-03-27 | 苏州众拓自动化科技有限公司 | Rotary feeding device |
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| CN2752721Y (en) * | 2004-12-16 | 2006-01-18 | 常州凯森光电有限公司 | Integrated centring and dip angle detecting instrument |
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