CN206200033U - Many servo wing top adjustment mechanisms of fin forming machine - Google Patents
Many servo wing top adjustment mechanisms of fin forming machine Download PDFInfo
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- CN206200033U CN206200033U CN201621172371.9U CN201621172371U CN206200033U CN 206200033 U CN206200033 U CN 206200033U CN 201621172371 U CN201621172371 U CN 201621172371U CN 206200033 U CN206200033 U CN 206200033U
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Abstract
The utility model is related to a kind of many servo wing top adjustment mechanisms of fin forming machine, including frame, is made up of upper machine plate, lower machine plate and guide pillar；Lower template；Keep spring；Four position-limited wheels, are threaded on guide pillar；Driving structure, is used to drive each position-limited wheel to rotate；It is characterized in that：Driving structure includes left servomotor and right servomotor, on upper machine plate, left drive sprocket and right drive sprocket is provided with the output shaft of left servomotor and right servomotor；Four driven sprockets, are fixed on each position-limited wheel；Left chain, bypasses two driven sprockets and the left drive sprocket on the left of frame successively；Right chain, bypasses two driven sprockets and the right drive sprocket on the right side of frame successively.Mechanism substitutes original single servomotor structure using 2 structures of servomotor, makes unilateral locking wheel or single locking wheel energy independent control, realizes the full-automation of whole wing top adjustment and smoothing process.
Description
Technical field
The utility model is related to a kind of technical field of forming machine for fin of plate-fin heat, more particularly to a kind of fin into
Many servo wing top adjustment mechanisms of type machine.
Background technology
Plate-fin heat exchanger is the heat exchanger of all kinds of gas separation equipments, is widely used in petrochemical industry, Aero-Space
Deng field, plate-fin heat exchanger has compact conformation, lightweight, and the advantage of heat exchange efficiency, especially heat exchange efficiency are changed than other
Hot device is high by 30%.Fin is the critical component of plate-fin heat exchanger, accounts for more than the 80% of whole heat exchanger volume, the precision of fin
Directly affect heat exchange efficiency and reliability, the security performance of plate-fin heat exchanger.
With the upgrading of plate-fin heat exchanger industry, the pressure and heat transfer rate of heat exchanging device propose requirement higher,
This all has to ensure by the formed precision for improving plate-fin heat exchanger fin.The mould of plate-fin heat exchanger fin
Using fixed ejection technique, and the different mould of correspondence, the height and front and back position of stripper plate are both needed to constantly adjustment, and this will look for novelty
The mould frame mechanism of form will possess steadiness and adjustability.Different wings fin high is produced to want upper and lower template closure height
Ask different, to be controlled in certain error to produce required precision of the high-precision fin to upper and lower template closure height in addition
In the range of, it is that this fin forming machine needs highly to be adjusted the closure of upper and lower template.
Such as the Chinese invention patent of Application No. ZL201510136122.8 (Publication No. CN104722679A)《Upper mould
Fixed fin forming machine》Such a wing top adjustment mechanism, including frame are disclosed, by upper machine plate, lower machine plate and located at upper
Guide pillar composition between machine plate and lower machine plate, the upper machine plate can be moved up and down with respect to guide pillar, and mould peace is provided with upper machine plate
Dress plate, the guide pillar above upper machine plate is provided with the position limiting structure that upper limit is carried out to upper machine plate；Lower template, the bottom in frame
And can up and down be slid along guide pillar；Spring is kept, is set on guide pillar and is supported between machine plate and lower template；Demolding structure,
Between lower template and lower machine plate.Position limiting structure includes position-limited wheel, is threaded on the guide pillar on upper machine plate top, limits
Position wheel directly or indirectly contradicts with the upper surface of upper machine plate and limits upper machine plate and move upwards, the periphery of each position-limited wheel be fixed with from
Movable sprocket；Chain, engages with each driven sprocket and is in closed circular successively；Servomotor, on the upper machine plate, servo
Drive sprocket is installed, drive sprocket is engaged with the chain and acted with drive chain on the output shaft of motor.Upper machine plate passes through
The upward upper machine plate of jack-up limitation of spring is kept to move down, upper machine plate top is then limited by the stop of position-limited wheel and moved on upper machine plate；
When wing to be adjusted (go up closure highly) between machine plate and lower template high, motor work, by chain and sprocket wheel Timing Belt
It is dynamic, each position-limited wheel is rotated, under the drive of screw-driven, position-limited wheel is moved down or upper shifting；Position-limited wheel is moved down, in promotion machine plate and
Upper die plate overcomes the support force for keeping spring to move down, and wing height reduction high (goes up closure between machine plate and lower template highly
Reduce)；Moved on position-limited wheel, upper machine plate and upper die plate under the elastic force effect for keeping spring on move, wing height high is raised (to be gone up
Closure extended height between machine plate and lower template).
It is reduces cost from for the conventional design thinking of those skilled in the art, can realizes being adjusted in synchronism again, can adopts
Rotated by a servomotor Synchronization Control by chain with four locking wheels.So in actual use, because of depositing for error
, can cause that the flatness of fin produced or so is inconsistent, and foregoing regulative mode is adjusted in synchronism for whole upper machine plate,
Can not realize that left and right is adjusted respectively, therefore, when wing flatness high change or other reasonses need regulation entirely upper machine plate (on
Template) depth of parallelism and lower template between when, it is necessary to detaching equipment protective cover, all of sprocket wheel compressing screw, hand are unclamped manually
The dynamic single or multiple locking wheels of rotation, depth of parallelism regulation need to lock sprocket wheel compressing screw, install protective cover, whole mistake again after finishing
Journey is all accomplished manually, and cumbersome, efficiency is very low.
The precompression of master reset spring, servomotor is overcome to be limited by chain-driving by screw thread pair because of position-limited wheel and column
Position wheel rotation realizes that wing high precision is automatically adjusted.In this kind of structure, wing is high more down to be adjusted, the master reset spring precompressed that need to be overcome
Power is bigger, and screw thread pair stress is also bigger, and screw thread is easy to wear so that the reduction of wing top adjustment precision, also shortens column with position-limited wheel
Service life.
Utility model content
Technical problem to be solved in the utility model is directed to above-mentioned state of the art and provides a kind of fin shaping
Many servo wing top adjustment mechanisms of machine, mechanism can not only facilitate regulation wing high, meanwhile, also can conveniently adjust the upper die plate depth of parallelism
Or wing unilateral regulation high, and then realize the full-automation of whole wing top adjustment and smoothing process.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：A kind of many servo wings of fin forming machine
Top adjustment mechanism, including frame, its four guide pillar by upper machine plate, lower machine plate and between upper machine plate and lower machine plate are constituted,
Upper machine plate can be moved up and down with respect to guide pillar, and upper die plate is provided with upper machine plate；Lower template, the bottom and can be along guide pillar in frame
Slide up and down；Spring is kept, is set on guide pillar and is supported between machine plate and lower template；Four position-limited wheels, threaded connection
On the guide pillar positioned at upper machine plate top, position-limited wheel is directly or indirectly contradicted with the upper surface of upper machine plate and the upper machine plate of limitation is upward
Motion；Driving structure, is used to drive each position-limited wheel to rotate；It is characterized in that：Driving structure includes left servomotor, installed in upper
On machine plate, left drive sprocket is installed on the output shaft of left servomotor；Right servomotor, on upper machine plate, right servo
Right drive sprocket is installed on the output shaft of motor；Four driven sprockets, are fixed on each position-limited wheel；Left chain, bypasses successively
Two driven sprockets and left drive sprocket on the left of frame and be in closed circular；Right chain, bypasses right positioned at frame successively
Two driven sprockets of side and right drive sprocket and be in closed circular.
As improvement, left motor mount and right motor mount, left motor are fixed with by screw on above-mentioned upper machine plate
The through hole passed through for screw in mounting seat and right motor mount is mounting hole, and the left servomotor is fixed on left motor and installs
On seat, the right servomotor is fixed on right motor mount.Because the right position of motor mount can be adjusted, it is easy to chain
The tensioning of bar.
It is larger due to keeping spring to apply upward support force to upper machine plate so that the compression between position-limited wheel and upper machine plate
Power is larger, therefore wants the rotary spacing wheel to need high torque, to overcome the above-mentioned position-limited wheel of this problem by being set in guide pillar
On the upper surface of plane bearing and upper machine plate contradict.So become rolling by planar friction between position-limited wheel and upper machine plate to rub
Wipe, it is relatively easy to drive position-limited wheel rotation, be able to can be driven using relatively low power motor, lower motor cost.
The top that the periphery of above-mentioned position-limited wheel has outer blocking shoulder, position-limited wheel is fixed with fixed cover annular in shape, on fixed cover
Multiple vertical screwed holes for running through are provided with, holding screw is threaded with from top to bottom in each screwed hole, driven sprocket is set in
On position-limited wheel and positioned between fixed cover and the outer blocking shoulder, the holding screw is downwards tight against firmly driven sprocket by driven chain
Wheel is fixed with position-limited wheel.Driven sprocket is designed with position-limited wheel using split, and driven sprocket is located in the middle of position-limited wheel and fixed cover, Gu
Surely apply mechanically screw to be fixed on position-limited wheel, screw holding screw, machine plate is highly with position-limited wheel synchronous axial system, in realization for driven sprocket
Integrated regulation, unclamp holding screw, position-limited wheel can rotate individually, i.e., when position-limited wheel rotates, driven sprocket is motionless, so may be used
Independent rotary stopper wheel, the position to upper machine plate is finely adjusted, and is used to adjust the overall flatness of machine plate.
For convenience of independent rotary spacing wheel, multiple jacks plugged for spanner are provided with the outer peripheral face of above-mentioned outer blocking shoulder.
Further improve, this governor motion also includes two pieces of cylinder mounting plates, the two ends of one of cylinder mounting plate
It is fixed on two guide pillars in left side, the two ends of another piece of cylinder mounting plate are held within two guide pillars on right side, and respectively
Cylinder mounting plate is located at the top of upper machine plate；Two cylinders, are separately fixed at the middle part of cylinder mounting plate, and the other end of cylinder is then
It is connected to drive upper machine plate to move down with upper machine plate.The program constitutes wing auxiliary adjustment structure high, and equipment enters wing top adjustment state
When, cylinder vent piston rod is stretched out, and machine plate is moved downward in promotion so that position-limited wheel is disengaged with upper machine plate, position-limited wheel and column
Between screw thread pair only realize spinfunction and do not stress.The bleed pressure of cylinder is by an air pressure proportional valve control by PLC
Control, PLC according to when fore wing position high exports bleed pressure controlled quentity controlled variable in real time, the distance for making position-limited wheel be disengaged with upper machine plate
Keep constant.After wing height adjustment terminates, cylinder exhaust, upper machine plate is moved up in the case where spring effect is kept and props up position-limited wheel, if
It is standby to be returned to normal production status.
The top surface of above-mentioned guide pillar is threaded hole, and the bolt that cylinder mounting plate is threadedly attached in screwed hole is fixed
On guide pillar.This structure is beneficial to installation of the cylinder mounting plate on guide pillar.
The cylinder body of above-mentioned cylinder is fixed on machine plate, and the piston rod of cylinder is threaded rod, and piston rod is installed through cylinder
Plate is fixed on cylinder mounting plate behind middle by nut.Cylinder is arranged on middle, and the power that cylinder applies to upper machine plate is more
Balance, naturally it is also possible to turn installation around.
Compared with prior art, the utility model has the advantage of：When the wing to be adjusted (closure i.e. between bolster high
When highly), two servomotors work simultaneously, drive each position-limited wheel rotation, under the drive of screw-driven, position-limited wheel move down or
Upper shifting；Position-limited wheel is moved down, and machine plate and upper die plate overcome the support force for keeping spring to move down in promotion, and wing height reduction high is (i.e.
Closure between bolster is highly reduced)；Moved on position-limited wheel, upper machine plate and upper die plate are keeping the elastic force of spring to use
Move, wing height high raises (the closure extended height i.e. between bolster), realizes the automation of wing top adjustment；And this kind of knot
In structure, the utility model substitutes original single servomotor structures using the structures of 2 servomotors, make unilateral locking wheel or
Single locking wheel can be independently controlled by independent servomotor, realize whole wing top adjustment and smoothing process it is complete from
Dynamicization, operates simpler.
Brief description of the drawings
Fig. 1 is the front view (removing auxiliary adjustment structure division) of the utility model embodiment；
Fig. 2 is enlarged drawing at the A of Fig. 1；
Fig. 3 is the side view (removing auxiliary adjustment structure division) of the utility model embodiment；
Fig. 4 is the utility model embodiment top view (removing auxiliary adjustment structure division)；
Fig. 5 is the front view (removing driving structure part) of the utility model embodiment；
Fig. 6 is enlarged drawing at the B of Fig. 5；
Fig. 7 is the side view (removing driving structure part) of the utility model embodiment；
Specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing embodiment.
It is a preferred embodiment of the present utility model as shown in Fig. 1~7.
A kind of fin forming machine wing top adjustment supplementary structure, including
Frame 1, its 13 groups of four guide pillar by upper machine plate 11, lower machine plate 12 and between upper machine plate 11 and lower machine plate 12
Into upper machine plate 11 can be moved up and down with respect to guide pillar 13, and upper die plate 14 is provided with upper machine plate 11.
Lower template 15, can slide located at bottom in frame 1 and about 13 along guide pillar；Set between lower template 15 and lower machine plate 12
There is demolding structure, demolding structure refers to background patents, without display in drawing.
Spring 4 is kept, is set on guide pillar 13 and is supported between machine plate 11 and lower template 15.
Four position-limited wheels 5, are threaded on the guide pillar 13 on the upper top of machine plate 11, and correspondence is installed on each guide pillar 13
One position-limited wheel 5, position-limited wheel 5 is directly or indirectly contradicted with the upper surface of upper machine plate 11 and limits the upper motion upwards of machine plate 11, this
Position-limited wheel 5 in embodiment is contradicted by the plane bearing 15 being set on guide pillar 13 with the upper surface of upper machine plate 11.Position-limited wheel 5
Periphery there is outer blocking shoulder 51, the top of position-limited wheel 5 is fixed with fixed cover 52 annular in shape, and fixed cover 52 is provided with multiple vertical
Holding screw 54 is threaded with from top to bottom in the screwed hole 53 for running through, screwed hole 53, and driven sprocket 3c is set in position-limited wheel 5
It is upper and between fixed cover 52 and outer blocking shoulder 51, holding screw 54 downwards tight against live in driven sprocket 3c by driven sprocket 3c with
Position-limited wheel 5 is fixed.Multiple jacks 55 plugged for spanner are provided with the outer peripheral face of outer blocking shoulder 51.
Driving structure, is used to drive each position-limited wheel 5 to rotate；As shown in figures 1-4, driving structure includes
Left servomotor 2a, on upper machine plate 11, left drive sprocket is provided with the output shaft of left servomotor 2a
3a.Left motor mount 7a is fixed with by screw 72 on upper machine plate 11, for leading to that screw 72 is passed through on left motor mount 7a
Hole is mounting hole 71, and left servomotor 2a is fixed on left motor mount 7a.
Right servomotor 2b, on upper machine plate 11, right drive sprocket is provided with the output shaft of right servomotor 2b
3b.Right motor mount 7b is fixed with by screw 72 on upper machine plate 11, for leading to that screw 72 is passed through on right motor mount 7b
Hole is mounting hole 71, and right servomotor 2b is fixed on right motor mount 7b.
Four driven sprocket 3c, are fixed on each position-limited wheel 5；
Left chain 6a, bypasses be in closing positioned at two driven sprocket 3c and left drive sprocket 3a in the left side of frame 1 successively
Ring-type.
Right chain 6b, bypasses two driven sprocket 3c and right drive sprocket 3b positioned at the right side of frame 1 successively) and it is in closing
Ring-type.
As shown in Fig. 5~7, two pieces of cylinder mounting plates 8, the two ends of one of cylinder mounting plate 8 are held within left side
Two guide pillars 13 on, the two ends of another piece of cylinder mounting plate 8 are held within two guide pillars 13 on right side, and each cylinder is pacified
Dress plate 8 is located at the top of upper machine plate 11；The top surface of guide pillar 13 is threaded hole 131, and cylinder mounting plate 8 is threadedly attached in
Bolt 16 in screwed hole is fixed on guide pillar 13.
Two cylinders 9, are separately fixed at the middle part of cylinder mounting plate 8, the other end of cylinder 9 be then connected with upper machine plate 11 with
Machine plate 11 is moved down in driving.The cylinder body of cylinder 9 is fixed on machine plate 11, and the piston rod of cylinder 9 is threaded rod, and piston rod is passed through
It is fixed on cylinder mounting plate 8 by nut 17 behind the middle of cylinder mounting plate 8.
Upper machine plate 11 in this wing top adjustment mechanism is moved down by keeping the upward jack-up of spring 4 to limit upper machine plate 11, upper machine
The top of plate 11 is then limited by the stop of position-limited wheel 5 and moved on upper machine plate 11.
When wing to be adjusted (closure i.e. between bolster is highly) high, left servomotor 2a and right servomotor 2b by
The synchronous operating in the same direction of PLC controls, synchronous each position-limited wheel 5 of driving structure is rotated, and under the drive of screw-driven, position-limited wheel 5 is moved down
Or upper shifting；Position-limited wheel 5 is moved down, and machine plate 11 and upper die plate 2 overcome the support force for keeping spring 10 to move down in promotion, wing height high
Reduce (closure i.e. between bolster is highly reduced)；Moved on position-limited wheel 5, upper machine plate 11 and upper die plate 2 are keeping spring 4
The lower upper shifting of elastic force effect, wing height high raises (the closure extended height i.e. between bolster)；Equipment enters wing top adjustment
During state, the vent piston rod of cylinder 9 is stretched out, and machine plate 11 is moved downward in promotion so that position-limited wheel 5 is disengaged with upper machine plate 11, limit
Screw thread pair between position wheel 5 and column 13 is only realized spinfunction and is not stressed so that screw thread is not easy to wear and raising regulation is smart
Degree, overcomes column 13 and the short defect of the service life of position-limited wheel 5.The bleed pressure of cylinder 9 passes through an air pressure proportional valve control
By PLC controls, PLC is according to when fore wing position high exports bleed pressure controlled quentity controlled variable in real time, making position-limited wheel 5 and upper machine plate 11 de-
The distance opened keeps constant.After wing height adjustment terminates, cylinder 9 is vented, and upper machine plate is moved up in the case where keeping spring 4 to act on and propped up
Position-limited wheel, device replied to normal production status.
When the upper machine plate 11 of adjustment (upper die plate 14 on the upper machine plate 11) depth of parallelism or wing unilateral regulation high is needed, then by PLC
To unilateral or single servomotor (left servomotor 2a or right servomotor 2b) split control, in control the left side of machine plate 11 or
Right part is moved up and down, and realizes the full-automation of whole wing top adjustment and smoothing process.To unilateral or single servo inside PLC
Motor (left servomotor 2a or right servomotor 2b) split regulated quantity is remembered and is set the upper limit, prevents equipment overall precision
It is affected.
Although preferred embodiment of the present utility model described in detail above, it is to be clearly understood that for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.
Claims (8)
1. many servo wing top adjustment mechanisms of a kind of fin forming machine, including
Frame (1), its four by upper machine plate (11), lower machine plate (12) and between upper machine plate (11) and lower machine plate (12) lead
Post (13) is constituted, and the upper machine plate (11) can be moved up and down with respect to guide pillar (13), and upper die plate (14) is provided with upper machine plate (11)；
Lower template (15), can slide located at frame (1) interior bottom and up and down along guide pillar (13)；
Spring (4) is kept, is set on guide pillar (13) and is supported between machine plate (11) and lower template (3)；
Four position-limited wheels (5), are threaded on the guide pillar (13) on upper machine plate (11) top, position-limited wheel (5) directly or
Connect and contradict and limit upper machine plate (11) and move upwards with the upper surface of upper machine plate (11)；
Driving structure, is used to drive each position-limited wheel (5) to rotate；
It is characterized in that：The driving structure includes
Left servomotor (2a), on the upper machine plate (11), left master is provided with the output shaft of left servomotor (2a)
Movable sprocket (3a)；
Right servomotor (2b), on the upper machine plate (11), right master is provided with the output shaft of right servomotor (2b)
Movable sprocket (3b)；
Four driven sprockets (3c), are fixed on each position-limited wheel (5)；
Left chain (6a), bypasses two driven sprockets (3c) on the left of frame (1) and left drive sprocket (3a) and is in successively
Closed circular；
Right chain (6b), bypasses two driven sprockets (3c) on the right side of frame (1) and right drive sprocket (3b) and is in successively
Closed circular.
2. many servo wing top adjustment mechanisms of fin forming machine according to claim 1, it is characterised in that：The upper machine plate
(11) left motor mount (7a) and right motor mount (7b) are fixed with by screw (72) on, left motor mount (7a) and
The through hole passed through for screw (72) on right motor mount (7b) is mounting hole (71), and the left servomotor (2a) is fixed on a left side
On motor mount (7a), the right servomotor (2b) is fixed on right motor mount (7b).
3. many servo wing top adjustment mechanisms of fin forming machine according to claim 1, it is characterised in that：The position-limited wheel
(5) plane bearing (18) and the upper surface of upper machine plate (11) by being set on guide pillar (13) are contradicted.
4. many servo wing top adjustment mechanisms of fin forming machine according to claim 1, it is characterised in that：The position-limited wheel
(5) top that periphery has outer blocking shoulder (51), position-limited wheel (5) is fixed with fixed cover (52) annular in shape, on fixed cover (52)
Multiple vertical screwed holes (53) for running through are provided with, holding screw (54), institute are threaded with from top to bottom in each screwed hole (53)
State driven sprocket (3c) to be set on position-limited wheel (5) and between fixed cover (52) and the outer blocking shoulder (51), the tightening
Screw (54) is fixed by driven sprocket (3c) and position-limited wheel (5) tight against firmly driven sprocket (3c) downwards.
5. many servo wing top adjustment mechanisms of fin forming machine according to claim 4, it is characterised in that：The outer blocking shoulder
(51) multiple jacks (55) plugged for spanner are provided with outer peripheral face.
6. according to many servo wing top adjustment mechanisms of any fin forming machine of Claims 1 to 5, it is characterised in that：Also wrap
Two pieces of cylinder mounting plates (8) are included, the two ends of one of cylinder mounting plate (8) are fixed on two guide pillars (13) in left side, separately
The two ends of one piece of cylinder mounting plate (8) are held within two guide pillars (13) on right side, and each cylinder mounting plate (8) is positioned at upper
The top of machine plate (11)；
Two cylinders (9), are separately fixed at the middle part of cylinder mounting plate (8), the other end of cylinder (9) then with upper machine plate (11) phase
Connect to drive upper machine plate (11) to move down.
7. many servo wing top adjustment mechanisms of fin forming machine according to claim 6, it is characterised in that：The guide pillar (13)
Top surface be threaded hole (131), the bolt (16) that cylinder mounting plate (8) is threadedly attached in screwed hole is fixed on leads
On post (13).
8. many servo wing top adjustment mechanisms of fin forming machine according to claim 6, it is characterised in that：The cylinder (9)
Cylinder body be fixed on machine plate (11), the piston rod of cylinder (9) is threaded rod, and piston rod is through cylinder mounting plate (8) center
Between after be fixed on cylinder mounting plate (6) by nut (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621172371.9U CN206200033U (en) | 2016-10-26 | 2016-10-26 | Many servo wing top adjustment mechanisms of fin forming machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621172371.9U CN206200033U (en) | 2016-10-26 | 2016-10-26 | Many servo wing top adjustment mechanisms of fin forming machine |
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| Publication Number | Publication Date |
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| CN206200033U true CN206200033U (en) | 2017-05-31 |
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ID=58757677
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345931A (en) * | 2016-10-26 | 2017-01-25 | 宁波荣智自动化科技有限公司 | Multi-servo fin height adjusting mechanism of fin forming machine |
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2016
- 2016-10-26 CN CN201621172371.9U patent/CN206200033U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345931A (en) * | 2016-10-26 | 2017-01-25 | 宁波荣智自动化科技有限公司 | Multi-servo fin height adjusting mechanism of fin forming machine |
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