Floating type position detection attachment device and die casting machine
Technical field
The present invention relates to metal forming technical field more particularly to a kind of floating type position detection attachment device and
Die casting machine containing the floating type position detection attachment device.
Background technique
Die casting machine is widely adopted due to that can complete in a very short period of time molding process, right in press casting procedure
The shot position of shot piston and move back the guarantee that the accurate detection that final position sets is finished product yield.
It is as shown in Figure 1 the structural schematic diagram of die casting machine in the prior art.The die casting machine includes injection oil cylinder 110, pressure
Piston rod 120 and injection connecting plate 130 are penetrated, which is separately connected the injection oil cylinder 110 and the injection
Connecting plate 130.The die casting machine further includes a stroke lever 140 positioned at 120 side of shot piston, the trip bar 140
One end is rigidly connected by hex nut 150 and the injection connecting plate 130, and the other end is through the guide copper sleeve 165 of guide pad 160
On, guide pad 160 is fixed on injection oil cylinder 110.In this configuration, shot piston 120 waits for ingot metal for quick injection,
And the effect of stroke lever 140 is set for detecting the shot position of the shot piston 120 and moving back final position.
Speed of the die casting machine in injection is very fast, and general operating rate is 3-4 meter per second, and 8 meter per seconds are reached when most fast.
Injection is carried out with so fast speed, the impact force that injection connecting plate 130 is born is very big.Under this impact, injection connects
Fishplate bar 130 can bending deformation.Simultaneously as injection connecting plate 130 and stroke lever 140 are rigidly connected, the trip bar 140 also can be with
Bending deformation.Although the radian of bending deformation is little every time, due to periodically reciprocal stress, accumulate over a long period, metal
Fatigue state can be generated, and then causes following problems:
First, stroke lever 140 and injection connecting plate 130 are rigid connections, and stroke lever 140 can follow injection connecting plate 130
Bending deformation.When 140 bending deformation of stroke lever, the bending power being subject to the connecting portion of injection connecting plate 130 is maximum, week
After the bending of phase property, it can cause to be broken at the connecting portion of the trip bar 140 and the injection connecting plate 130 in turn.
Second, 140 bending deformation of stroke lever can also cause in turn guide copper sleeve 165 by biggish offset loading force, and then lead
Cause 165 serious wear of guide copper sleeve.This will lead to that the positioning of stroke lever 140 is inaccurate, shot position to the shot piston 120 and
It moves back the detection that final position is set to be affected, deviation occurs to the instruction of die casting process.
Third, injection connecting plate 130 also will appear fracture from after Cyclic flexion deformation and fatigue.
Therefore, it is necessary to propose a kind of floating type position detection attachment device and containing floating type position detection connection
The die casting machine of device solves the problems, such as the bending deformation of shot piston, stroke lever and injection connecting plate, improves die casting machine shock resistance
Power promotes casting yield.
Summary of the invention
In view of this, being examined the present invention provides a kind of floating type position detection attachment device and comprising the floating type position
The die casting machine for surveying attachment device, is able to solve above-mentioned technical problem, and can efficiently and reliably article of manufacture.
Floating type position detection attachment device of the invention, including stroke lever, guide pad and boring cover, one end of the trip bar
Vertical float is connected to an injection connecting plate, which is fixed on the injection connecting plate, and engages with the floating of the trip bar,
It is axially moveable the trip bar not, the other end of the trip bar is threaded through in the guide pad.
According to one embodiment of present invention, the floating type position detection attachment device is symmetricly set on injection connection
The two sides of plate.
According to one embodiment of present invention, the end of the stroke lever being connected with the injection connecting plate, including lead
To portion, necking part and interconnecting piece, which is located between the guide part and the interconnecting piece.
According to one embodiment of present invention, the injection connecting plate offers stepped hole, including aperture and macropore, the row
The guide part of journey bar is threaded through in the aperture of the injection connecting plate, which is located in the macropore of the injection connecting plate.It is described
Ring is also placed in the macropore of injection connecting plate, the necking part for the engaging the trip bar that floats.
According to one embodiment of present invention, exist between the ring and the trip bar necking part it is radial it is unilateral between
Gap, the radial direction unilateral gap are 0.5-2 millimeters.
According to one embodiment of present invention, there are axial gaps between the ring and the trip bar interconnecting piece, should
Axial gap is 0.02-0.3 millimeters, preferably 0.05-0.1 millimeters.
According to one embodiment of present invention, the interconnecting piece engages with boring cover floating.The interconnecting piece includes two
The transverse plane of milling, the boring cover offer the oval hole slot to match with the interconnecting piece, and the transverse plane of the interconnecting piece is oval with this
There are slot gap between the long groove face of hole slot, which is 0.1-0.15 millimeters.
According to one embodiment of present invention, the guide pad includes at least one guiding copper being fixed on the guide pad
Set, the trip bar are threaded through in the guide copper sleeve, the cooperation of the two glade plane space.
The present invention also provides a kind of die casting machines comprising floating type position detection attachment device as described above further includes
Injection device, the injection device include injection oil cylinder, shot piston and injection connecting plate, and the injection oil cylinder and the injection are living
One end of stopper rod axially connects, and injection connecting plate is vertical is fixedly connected with this for the other end of the shot piston;The floating type position
The guide pad for setting detection attachment device is fixed on the injection oil cylinder.
Compared with the prior art, the radial unilateral gap between ring of the invention and the trip bar necking part, ring
Between the transverse plane of axial gap and the trip bar interconnecting piece and the slot of the oval hole slot of the boring cover between the trip bar interconnecting piece
Gap so that between the end of the trip bar and the ring and the boring cover can floating connection so that the trip bar with should
Floating connection mode is used between injection connecting plate.
Above structure can guarantee that when the injection connecting plate is hit power bending deformation, the trip bar keeps linear
State, and can guarantee that the trip bar is restricted in a rotational direction, can only rotate small angle, and the range of small rotation
Within the detection range of position detecting element, equipment normal operation will not influence.The trip bar is made to keep straight first as a result,
Linear state, will not be because periodically distorting due to fatigue even fracture.Secondly, the trip bar keeps linear state, so that guide copper sleeve
It will not be worn because of unbalance loading.Finally, the injection connecting plate is both sides symmetry arrangement, the floating type position detection is respectively set in bilateral
Attachment device, so that the periodical degreeof tortuosity of injection connecting plate reduces, fracture probability is reduced.
It by above scheme, solves the problems, such as the bending deformation of shot piston, stroke lever and injection connecting plate, improves anti-
Impact force promotes casting yield.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of die casting machine in the prior art.
Fig. 2 is the structural schematic diagram of die casting machine of the invention.
Fig. 3 is the direction the A-A enlarged diagram of dotted box portion in Fig. 2.
Fig. 4 is the structural schematic diagram for the trip boom end being connected with the injection connecting plate.
Fig. 5 is diagrammatic cross-section of the interconnecting piece in Fig. 4 along the direction B-B.
Fig. 6 is the stroke lever schematic diagram assembled after boring cover.
Fig. 7 is the enlarged diagram of dotted box portion in Fig. 3.
Fig. 8 be outside the boring cover from obtained schematic side view.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, the present invention is described in detail as follows.
Fig. 2 is the structural schematic diagram of die casting machine 200 provided by one embodiment of the present invention.The die casting machine 200 includes injection
Device 201 and positioned at 201 two sides of injection device, relative to the injection device 201 axisymmetrical be arranged two it is floating type
Position detection attachment device 202.
The injection device 201 includes injection oil cylinder 210, shot piston 220 and injection connecting plate 230, injection oil
Cylinder 210 is axially connect with one end of the shot piston 220, and the shot piston 220 is driven to move back and forth.The injection is living
Injection connecting plate 230 is vertical is fixedly connected with this for the other end of stopper rod 220.
The floating type position detection attachment device 202 is set to the injection relative to the axisymmetrical of the injection device 201
The both ends of device 201.The floating type position detection attachment device 202 includes stroke lever 240, guide pad 260 and boring cover 270,
One end vertical float of the trip bar 240 is connected to the injection connecting plate 230, which is fixed on the injection connecting plate 230
On, and engage with the floating of the trip bar 240, capable of blocking the trip bar 240, so that it will not be axially moveable;The trip bar
240 other end is threaded through in the guide pad 260, which is fixed on the injection oil cylinder 210.The injection connecting plate
230 be both sides symmetry arrangement, and the both ends of the injection connecting plate 230 are respectively symmetrically connected relative to the axis of the injection device 201
A piece stroke lever 240.
As shown in figure 3, for the direction the A-A enlarged diagram of dotted box portion in Fig. 2.From the figure 3, it may be seen that the guide pad 260
It further comprise the guide copper sleeve 265 that at least one is fixed on the guide pad 260, the trip bar 240 is threaded through the guide pad
On 260 guide copper sleeve 265, glade plane space cooperates between the guide copper sleeve 265 and the trip bar 240.At of the invention one
In embodiment, which is screwed on the guide pad 260.The guide pad 260 is fixed on the injection oil cylinder
On 210.In one embodiment of the invention, there are two the guide copper sleeves 265, as long as the trip bar 240 is not by radial direction
External force influence, the two guide copper sleeves 265 ensure that the trip bar 240 moves in a straight line as the crow flies.
In order to mitigate the abrasion of guide copper sleeve 265, in one embodiment of the invention, it is provided on the guide copper sleeve 265
Oil groove (not shown), the contact surface between the guide copper sleeve 265 of oiling grease lubrication in the oil groove and the trip bar 240, to subtract
Small coefficient of friction.In another embodiment of the present invention, which is graphite material, is persistently waved on graphite copper sheathing
The oil film of hair can lubricate the contact surface between the guide copper sleeve 265 and the trip bar 240, to reduce the friction of contact surface.At this
In the further embodiment of invention, the guide copper sleeve 265 using resistance to high-speed friction extraordinary copper, such as with the ZCuSn10Pb1 trade mark
Copper.In yet another embodiment of the present invention, the outer chromium plating of the trip bar 240 and polishing treatment, to reduce friction.
It is illustrated in figure 4 the structural schematic diagram for 240 end of the trip bar connecting with the injection connecting plate 230.The trip
The end of bar 240 includes guide part 242, necking part 244 and interconnecting piece 246, the necking part 244 be located at the guide part 242 with
Between the interconnecting piece 246.
In conjunction with shown in Fig. 3 and Fig. 4, which offers stepped hole (not indicating), which includes aperture
And macropore two parts, the guide part 242 and the necking part 244 of the trip bar 240 are accommodated respectively.It leads 240 end of the trip bar
It is threaded through to portion 242 in the aperture of the stepped hole of the injection connecting plate 230, in the macropore of the stepped hole of the injection connecting plate 230
Ring 280 is also placed, the necking part 244 for the engaging the trip bar 240 that floats.The interconnecting piece 246 of the trip bar 240 with should
Boring cover 270, which floats, to be engaged.In a preferred embodiment of the invention, which is two semi-rings.The end of the trip bar 240
Portion, that is, the guide part 242, the necking part 244 and the interconnecting piece 246, with the ring 280, the injection connecting plate 230 and should
It is floating connection between boring cover 270, so that it is guaranteed that the end float of the trip bar 240 connects, thus eliminates the trip bar 240
Radially outward force influences.
Furthermore, it is understood that as shown in figure 3, the ring 280 is pressed on the injection connecting plate 230 by the boring cover 270, simultaneously
The boring cover 270 is fixed on the injection connecting plate 230.In this way, the boring cover 270, the injection connecting plate 230 and the ring
280 form an entirety.And ring 280 is seized the trip bar 240, so that the trip bar 240 only has floating effect, without
Axial displacement is had, i.e. the trip bar 240 will not be relative to 280 axial displacement of ring, will not be relative to the boring cover 270
Axial displacement.
Fig. 5 is diagrammatic cross-section of the interconnecting piece 246 in Fig. 4 along the direction B-B.As shown in Figure 5, which is milled
Two parallel transverse planes 2462.The boring cover 270 is provided with the oval hole slot (abbreviation elongated slot) to match with the interconnecting piece 246,
The interconnecting piece 246 can match with the oval hole slot of the boring cover 270 in this way, and fit together.Fig. 6 is to assemble the boring cover
240 schematic diagram of stroke lever after 270.
Fig. 7 is the enlarged diagram of dotted box portion in Fig. 3.As can be seen that ring 280 is two semi-rings in figure, spell
At an annulus.There is radial unilateral gap S1 between each ring 280 and stroke lever 240, exactly, this is unilateral radial
Gap of the gap S1 between the ring 280 and the necking part 244 of the trip bar 240.As long as it means that the injection connecting plate
230 bending causes the radial deflection of the stepped hole and ring 280 of the injection connecting plate 230 within the scope of S1, all will not be right
The necking part 244 of the especially stroke lever 240 of stroke lever 240 causes radial load.The radial direction unilateral gap S1 is 0.5-2 millimeters.
If radial direction unilateral gap S1 is too small, less than the bending degree of the injection connecting plate 230, then the necking part of the trip bar 240
244 still can afford radial load.And S1 is excessive, will cause the ring 280 and the trip bar 240 necking part 244 it
Between spacing it is excessive, can not block.In one embodiment of the invention, which is 1 millimeter.According to practical work
Condition experience, the bending of injection connecting plate 230 are not up to 1 millimeter, that is to say, that the presence of radial direction unilateral gap S1, so that
The trip bar 240 is not subject to radial load.In this way, the necking part 244 of the trip bar 240 can block ring 280, but
There is gap appropriate to be used to float.
There is also axial gap S2 between the ring 280 and the interconnecting piece 246 of the trip bar 240.Axial gap S2
When can guarantee injection 230 bending deformation of connecting plate, the interconnecting piece 246 of the especially the trip bar 240 of the trip bar 240 will not
Stress guarantees the floating effect of the trip bar 240 to maintain the linear state of the trip bar 240.And from practical fast ram compression
From the point of view of the operating condition penetrated, it is most critical that high pressure drives stroke lever 240 to move ahead with high flow, and this axial gap S2 is not
Technological parameter can be impacted.In one embodiment of the invention, axial gap S2 is 0.02-0.3 millimeters, preferably
0.05-0.1 millimeters.If the S2 is too small, less than the bending degree of the injection connecting plate 230, then the interconnecting piece of the trip bar 240
246 still can afford radial load.And S2 is excessive, will cause the ring 280 and the trip bar 240 interconnecting piece 246 it
Between spacing it is excessive, influence the trip bar 240 along axial and move spacing accuracy control, and then influence die casting quality.
As shown in figure 8, for the schematic side view obtained from outside the boring cover 270.In conjunction with Fig. 7 and Fig. 8 it is found that the boring cover
270 are fixed on the injection connecting plate 230 by circular hole screw 272.Fig. 8 shows that the interconnecting piece 246 of the trip bar 240 is opposite
In axially and symmetrically having milled two transverse planes 2462 parallel to each other.And oval hole slot is provided in the axial direction on the boring cover 270
274.Between the transverse plane 2462 of 240 interconnecting piece 246 of the trip bar and the long groove face of the oval hole slot 274 of boring cover 270, there are slots
Gap S3.This, which results in stroke lever 240, can only atomic small rotation.In a preferred embodiment of the invention, between the slot
Gap S3 is 0.1-0.15 millimeters.In engineering, the permission deflection angle of position detecting element is ± 3 °.In design of the invention,
Under actual condition, the deflection angle actually caused only has ± 1.2 °, and therefore, this atomic small rotating range is in position detection
Within the detection range of element, position detection will not be impacted.Meanwhile this slot gap S3 also ensures the trip bar
240 floating effect, so that the trip bar 240 not will receive the influence and limitation of boring cover 270.
In conclusion radial unilateral gap S1, ring between 240 necking part 244 of above-mentioned ring 280 and the trip bar
The transverse plane 2462 of 240 interconnecting piece 246 of axial gap S2 and the trip bar between 280 and 240 interconnecting piece 246 of the trip bar
With the slot gap S3 of the oval hole slot 274 of boring cover 270 so that the end of the trip bar 240 and the ring 280 and the boring cover
Between 270 can floating connection so that between the trip bar 240 and the injection connecting plate 230 use floating connection mode.
Above structure can guarantee that the trip bar 240 keeps straight when the injection connecting plate 230 is hit power bending deformation
Linear state, and can guarantee that the trip bar 240 is restricted in a rotational direction, can only rotate small angle, and small rotation
The range turned will not influence equipment normal operation within the detection range of position detecting element.As a result, firstly, making the row
Journey bar 240 keeps linear state, tired because periodically distorting will not even be broken.Secondly, the trip bar 240 keeps linear
State, so that guide copper sleeve 265 will not be worn because of unbalance loading.Finally, the injection connecting plate 230 is both sides symmetry arrangement, bilateral separate
The floating type position detection attachment device 202 is not set, so that the periodical degreeof tortuosity of injection connecting plate 230 reduces, fracture
Probability reduces.
It by above scheme, solves the problems, such as the bending deformation of shot piston, stroke lever and injection connecting plate, improves anti-
Impact force promotes casting yield.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.