Utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of mould height indicator, be intended to solve existing mould height indicator easily due to transmission shaft axial float and radially wobble and cause jitter and uneasy congruent problem.
The technical solution of the utility model is as follows:
A kind of mould height indicator, wherein, described mould height indicator comprises a circuit board, arranges magnetic position sensor on circuit boards, and described mould height indicator also comprises the permanent magnet corresponding to magnetic position sensor, and described permanent magnet is connected to transmission shaft by gear structure.
Described mould height indicator, wherein, described gear structure comprises at least one driving gear and at least one follower gear, and described driving gear is sleeved on described transmission shaft, described permanent magnet is arranged on follower gear central upper, and described driving gear engages with described follower gear.
Described mould height indicator, wherein, is provided with a fixed mount bottom described circuit board, described follower gear center is provided with a stationary shaft, described stationary shaft is connected with described fixed mount, and described follower gear rotates around described stationary shaft, described driving gear and transmission shaft wringing fit.
Described mould height indicator, wherein, the part that described circuit board corresponds to transmission shaft is that empty avoiding is arranged.
Described mould height indicator, wherein, described transmission shaft is provided with at least one bearing in the part of housing.
Described mould height indicator, wherein, described bearing is two, and the gap between two bearings is filled by housing.
Described mould height indicator, wherein, described magnetic position sensor is the non-contact type magnetic rotary encoder can measuring angle in 360 °.
Described mould height indicator, wherein, the position oil sealing sealing that described transmission shaft contacts with the housing outer rim of mould height indicator.
Described mould height indicator, wherein, described mould height indicator opening part is provided with back up pad, described back up pad is provided with erection column, is locked on the supporting plate by circuit board by described erection column.
Described mould height indicator, wherein, the material of described follower gear and stationary shaft is non-magnet material.
Beneficial effect: the utility model prevents transmission shaft axial float and the impact radially wobbled magnetic position sensor by adopting gear structure, and the gap between permanent magnet and magnetic position sensor, thus improve signal stabilization and security, prevent from producing error signal by vibrations, its structural design is more ingenious, transmission shaft is not directly just to sensor and the circuit board arranging this sensor in addition, causes damaging IC and the safety problem of leaking electricity so punch when avoiding the excessive axial float of transmission shaft and radially wobble.
Embodiment
The utility model provides a kind of mould height indicator, for making the purpose of this utility model, technical scheme and effect clearly, clearly, further describes below to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Shown in composition graphs 1 to Fig. 4, the preferred embodiment of the utility model mould height indicator comprises a circuit board 4, magnetic position sensor 19 is set on the circuit board 4, described mould height indicator also comprises the permanent magnet 14 corresponding to magnetic position sensor 19, described permanent magnet 14 is connected to transmission shaft 9 by gear structure, described gear structure comprises at least one driving gear 12 and at least one follower gear 5, described driving gear 12 is sleeved on described transmission shaft 9, described permanent magnet 14 is arranged on follower gear 5 central upper, and described driving gear 12 engages with described follower gear 5.Described magnetic potential sensor 19 perpendicular to permanent magnet 14, also can be parallel to permanent magnet 14.
The inventive point that the utility model embodiment is most crucial: the motion of being transmitted transmission shaft 9 by a gear structure, thus avoid transmission shaft 9 directly perpendicular to (or being parallel to) magnetic position sensor 19, so avoid transmission shaft 9 axial float and radially wobble brought impact.In addition, adopt magnetic position sensor 19 to detect the angle of transmission shaft 9, its detection is safer relative to sensors such as traditional photoelectricity, stable, and water of being fearless, oil, the pollution of dust.
Mould height indicator of the present utility model, its one-piece construction comprises: a housing 7, an opening and the panel 1 for closing described opening is provided with in described housing 7 side, a display screen 3 is also provided with at opening part, back up pad 2 is set between panel 1 and opening, described display screen 3 embeds in described back up pad 2, described in described panel 1(, panel is glue film, make a check mark use, its part corresponding to display screen 3 is transparence) be fixed on housing 7 by described back up pad 2, described back up pad 2 is fixed on housing 7 by screw 16.Described circuit board 4 circuit can connect a power supplier.Panel 1 and described housing 7 form an enclosure space, and circuit board 4, back up pad 2, display screen 3 and power supplier are arranged in described enclosure space.Power supplier is specifically as follows battery (as accumulator), is arranged with one and provides battery shockproof cover outside described battery, and this battery is option certainly, also can external power supply.
Highlight the inventive point that the utility model is most crucial below.
Described transmission shaft 9 drives driving gear 12 to rotate, driving gear 12 engages with follower gear 5, mould height display can be arranged on the lifting slider on pressing machine, its transmission shaft 9 can be connected with the drive motor action axle of lifting slider, like this, the lifting action of lifting slider just passes to transmission shaft 9 by drive motor, and transmission shaft 9 drives driving gear 12 to rotate, driving gear 12 drives follower gear 5 to rotate, thus achieves the transmitting and converting of slide block movement.
Permanent magnet 14 is established on follower gear 5 top, described permanent magnet 14 is perpendicular to (or being parallel to) magnetic position sensor 19, and tool is at regular intervals, detect by magnetic position sensor 19 detection that the permanent magnet 14 that rotates along with follower gear 5 realizes transmission shaft 9 angle.
Specifically, described circuit board 4 is provided with a fixed mount 6, this fixed mount 6 is for supporting follower gear 5.Described follower gear 5 center is provided with a stationary shaft, and described stationary shaft is connected with described fixed mount 6, and the radial direction realizing follower gear 5 is like this fixed, and follower gear 5 can be rotated around described stationary shaft.By screw 13 axial restraint between described follower gear 5 and stationary shaft, stationary shaft is fixedly installed, and namely follower gear 5 can rotate around stationary shaft.The upper end of stationary shaft is provided with screw hole, makes screw 13 can connect downwards described stationary shaft by the top of follower gear 5.
The shape of described fixed mount 6 is similar to second font semi-surrounding shape structure, it is made up of orthogonal three limits, its insole binding is close to described circuit board 4, and fixed by screw with it, middle limit is arranged near one side of follower gear 5 and parallel with follower gear 5, top margin is then arranged bottom described follower gear 5, and is connected with described follower gear 5 by stationary shaft.
Fix by screw 13 between described driving gear 12 and transmission shaft 9, driving gear 12 and transmission shaft 9 are wringing fits, namely driving gear 12 can rotate along with the rotation of transmission shaft 9, the top of transmission shaft is provided with screw hole, makes this screw can connect downwards described transmission shaft 9 by the top of driving gear 12.
Described circuit board 4 is arranged with transmission shaft 9 empty avoiding, as shown in Figure 5, the part that circuit board 4 corresponds to transmission shaft 9 is set to empty avoiding, such as adopt the mode shifted to install or the part hollow out corresponding to transmission shaft 9 on the circuit board 4, the object of setting like this is when preventing transmission shaft 9 from breaking down, and breaks through the restriction of bearing and housing 7, when being flushed to housing 7 inside, damage circuit board 4, avoid the serious problems such as circuit board 4 short circuit electric leakage.Part simultaneously in this housing 7 need reserve space when transmission shaft 9 is punched in housing 7, makes the sensor that transmission shaft 9 can not wash out circuit board and arrange on circuit boards.Circuit board 4 is locked in back up pad 2, to facilitate installation testing and assembling by the erection column in back up pad 2 and the screw on circuit board 15.
At described transmission shaft 9, the part of housing 7 is provided with at least one bearing 11, preferably for interval arranges two.By the restriction of two bearings 11, transmission shaft 9 radial displacement is limited, and rocks so avoid transmission shaft 9 radial direction.Further, the gap between two bearings 11 is filled by housing 7, namely housing 7 is formed the shape being similar to a step, can guarantee the rotation that transmission shaft 9 is more stable further like this, avoid radial and axial play.
The IC chip of described magnetic position sensor 19 is preferably AS5000 series, and the utility model is AS5040 preferably.This magnetic position sensor 19 is the non-contact type magnetic rotary encoder can measuring angle in 360 °, so be applicable to severe working environment, and can tolerate a certain amount of permanent magnet position and departs from and air gap change conditions.And the vertical interval between permanent magnet 14 and IC chip should be the magnetic field of IC chip surface can be made to be within the scope of regulation, its vertical interval preferably at 0.2mm ~ 6mm, more preferably 0.5mm ~ 1.8mm in the utility model.This permanent magnet 14 should be bipolar magnet.The built-in Hall element of described magnetic position sensor 19, its center around the chip of magnetic position sensor 19 distributes, and produces the voltage that one characterizes IC chip surface magnetic field.
Transmission shaft 9 extends end vertical grafting one trundle 10 outside housing 7.The position oil sealing 8 contacted with housing 7 outer rim at described transmission shaft 9 seals, to play grease proofing effect, it can prevent the pollution from oil outer, water and dust, and transmission shaft 9 needs lubrication in transmission process simultaneously, and oil sealing 8 also can play the generation preventing bearing oil leakage situation.Also can fill shockproof insulating gel between display screen 3 and circuit board 4 simultaneously and apply shockproof insulating gel on the circuit board 4 to improve sealing effectiveness and shockproof effect.
Described transmission shaft 9, as shown in Figure 3, also can by transmission shaft 17(transmission shaft 9 except arranging latch structure) part of extending outside housing 7 arranges a shockproof flexible axle 18, arranges trundle 10, to improve shockproof effect simultaneously.Described shockproof flexible axle 18 is flexible shaft, and it can connect not at same axis with not at same direction or the diaxon having relative motion, with transferring rotational motion and moment of torsion.
The material of described follower gear 5 and stationary shaft is non-magnet material, and such as copper, aluminium, plastic cement, pottery etc., be subject to magnetic interference to prevent magnetic field.
In sum, the utility model prevents transmission shaft axial float and the impact radially wobbled magnetic position sensor by adopting gear structure, and the gap between permanent magnet and magnetic position sensor, thus improve signal stabilization and security, prevent from producing error signal by vibrations, its structural design is more ingenious, and transmission shaft is not directly just to sensor in addition, causes damaging IC and the safety problem of leaking electricity so punch when avoiding the excessive axial float of transmission shaft and radially wobble.
Should be understood that; application of the present utility model is not limited to above-mentioned citing; for those of ordinary skills, can be improved according to the above description or convert, all these improve and convert the protection domain that all should belong to the utility model claims.