CN104316226A - Circular groove type force sensor - Google Patents
Circular groove type force sensor Download PDFInfo
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- CN104316226A CN104316226A CN201410612552.8A CN201410612552A CN104316226A CN 104316226 A CN104316226 A CN 104316226A CN 201410612552 A CN201410612552 A CN 201410612552A CN 104316226 A CN104316226 A CN 104316226A
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- ring groove
- terminal box
- circular groove
- elastic body
- type force
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Abstract
A circular groove type force sensor comprises a junction box, a signal amplifier, a connector and a cylindrical elastic body. A cylindrical boss is arranged on the upper end face of the elastic body, and a round groove is formed in the lower end face of the elastic body. A central through hole is formed along the axis of the elastic body, an upper circular groove is formed in the upper end face of the elastic body, and a lower circular groove is formed in the bottom face of the round groove and corresponds to the upper circular groove. The upper circular groove is not communicated with the lower circular groove, and walls between the two circular grooves form a strain beam. Multiple strain gauges are arranged on the bottom wall of the upper circular groove to form a measuring bridge. A slot of the upper circular groove is sealed by a circular metal diaphragm, inner installation holes are formed in the upper end face of the cylindrical boss, and outer installation holes are formed in the upper end face of the elastic body. The signal amplifier is connected with the strain gauges and the connector, the strain gauges are arranged on the circular strain beam to form the measuring bridge so that tiny distortion signals can be directly obtained and output after being amplified by the signal amplifier, and the circular groove type force sensor is high in measuring precision, quick in dynamic response, suitable for quick measurement, and small in measurement error.
Description
Technical field
The present invention relates to the force snesor that injection machine uses, specifically a kind of annular groove type force snesor.
Background technology
On existing injection machine, injection and back-pressure control by measuring oil pressure pressure, and adopt the sensor response time of oil pressure measurement back-pressure long, measuring error is large, the Measurement sensibility time is long, this tonometric shortcoming is that precision is low, and dynamic response is slow, is not suitable for Quick Measurement.
The sensor that oil pressure back-pressure is measured in the current injection machine overwhelming majority or use realizes controlling, and adopt the frequency response of full electric injection molding machine requirement to be greater than 1kHz, and current pressure transducer can not meet.
Summary of the invention
For solving the problem that measuring speed is slow, accuracy of measurement is low existed at present, the invention provides a kind of force snesor of annular groove type structure.
The present invention solves the technical scheme that its technical matters takes: a kind of annular groove type force snesor, comprise terminal box, signal amplifier, connector and elastic body, described elastic body is cylindrical structure, the centre bit of end face installs axially extended cylindrical boss thereon, establishes the circular groove coaxial with it in its lower surface.Central through hole is provided with along described elastomeric axis.At described elastomeric upper surface ring groove in the arranged outside of the outer wall of described cylindrical boss, corresponding described upper ring groove arranges lower ring groove in the bottom surface of described circular groove.Described upper ring groove is not communicated with described lower ring groove, the strain beam of the wall body looping between them.On described ring groove diapire on stationary distribution multiple effector is set, form measuring bridge.The notch of described upper ring groove is lived by endless metal diaphragm seal, can adopt argon arc welding or Laser Welding (LBW) welded closure between described endless metal diaphragm and elastic body.Radial outside distribution in the upper surface of described cylindrical boss in central through hole arranges mounting hole in a week, radial outside distribution in described elastomeric upper surface in upper ring groove arranges one week outer mounting hole, and described outer mounting hole and described interior mounting hole are through hole.Described terminal box is fixedly installed on described elastomeric outer wall, and terminal box can be connected as one by the mode of welding with elastic body.Described signal amplifier is fixedly installed in described terminal box and is connected with effector.The outer wall that described connector is fixed on described terminal box is connected with described signal amplifier.
Further, the aperture of described central through hole is divided into two sections, and the aperture of epimere is greater than the aperture of hypomere.
Further, inject casting glue and fix described signal amplifier in described terminal box, the end face of terminal box adopts plate welding sealing.
Further, described effector is pasted on the diapire of ring groove on described.
Further, inject casting glue on described and fix described effector in ring groove, described endless metal diaphragm is by the notch place of casting glue fixing seal ring groove on described.
The present invention forms measuring bridge by the effector that arranges uniform on the strain beam of ring-type, can directly obtain small deformation signal, and amplify output through signal amplifier, so its measuring accuracy is high, dynamic response is fast, be suitable for Quick Measurement, and measuring error is little, the Survey control that frequency response requirement is greater than 1kHz can be applicable to.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention one;
Fig. 2 is the cross-sectional view along A-A in Fig. 1;
Fig. 3 is the structural representation of embodiment of the present invention two;
Fig. 4 is the cross-sectional view along B-B in Fig. 3;
In figure: 1 terminal box, 2 signal amplifiers, 3 connectors, 4 elastic bodys, 41 central through holes, ring groove on 42,43 times ring grooves, 44 strain beams, 45 effectors, mounting hole in 46,47 outer mounting holes, 5 endless metal diaphragms.
Embodiment
For ease of understanding technical scheme of the present invention, below in conjunction with accompanying drawing, wherein involved technology contents is described further.
In the description of this invention, it should be noted that, term "left", "right", "front", "rear", " on ", D score, " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection, can be directly to be connected, and also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figures 1 to 4,
A kind of annular groove type force snesor, comprises terminal box 2, signal amplifier 2, connector 3 and elastic body 4.
Described elastic body 4 is cylindrical structure, and the centre bit of end face installs axially extended cylindrical boss thereon, establishes the circular groove coaxial with it in its lower surface.
Axis along described elastic body 4 is provided with central through hole 41.
In the upper surface of described elastic body 4 in the arranged outside of the outer wall of described cylindrical boss ring groove 42, corresponding described upper ring groove 42 arranges lower ring groove 43 in the bottom surface of described circular groove.Described in described upper ring groove 42, lower ring groove 43 is not communicated with, the strain beam 44 of the wall body looping between upper ring groove 42 and lower ring groove 43.
On described ring groove 42 diapire on stationary distribution four effectors 45 are set, described effector 45 connects and composes measuring bridge.The notch of described upper ring groove 42 is sealed up by endless metal diaphragm 5, can adopt argon arc welding or Laser Welding (LBW) welded closure between described endless metal diaphragm 5 and elastic body 4.Described effector 45 can be pasted on the diapire of ring groove 42 on described; also can on described in ring groove 42 injection casting glue fix described effector 45; described effector 45 is also played a protective role simultaneously, and now can by the notch place of described endless metal diaphragm 5 by casting glue fixing seal ring groove 42 on described.
Radial outside distribution in the upper surface of described cylindrical boss in described central through hole 41 arranges mounting hole 46 in a week, in the upper surface of described elastic body 4, the radial outside distribution of ring groove 42 arranges one week outer mounting hole 47 on described, and described outer mounting hole 47 and described interior mounting hole 46 are the through hole coaxial with described elastic body 4 axis.
Stating terminal box 1 is fixedly installed on the outer wall of described elastic body 4, and terminal box 1 can be connected as one by the mode of welding with elastic body 4.Described signal amplifier 2 to be fixedly installed in described terminal box 1 and to be connected with effector 45 by signal receiver.Can inject casting glue in described terminal box 1 and fix described signal amplifier 2, the end face of terminal box 1 adopts plate welding sealing.Certain described signal amplifier 2 also can take mechanical means, is fixed in described terminal box 1, and the end face of described terminal box 1 also can adopt flat board to be bonded and sealed.
The outer wall that described connector 3 is fixed on described terminal box 1 is connected with described signal amplifier 2.Signal is connected on the socket of the connector 3 be fixed on terminal box 1 sidewall, is connected with the connector plug outside sensor by socket, exports the V level signal amplified, and makes signal amplify band and is wider than 1KHz.
Embodiment one as shown in Figure 1 and Figure 2, the aperture of described central through hole 41 is divided into two sections, and the aperture of epimere is greater than the aperture of hypomere.Embodiment two as shown in Figure 3, Figure 4, described central through hole 41 is the consistent through hole in aperture.
For ease of the connection of annular groove type force snesor involved in the present invention and injection machine, interior mounting hole 46 on described elastic body 4, outer mounting hole 47 is circumference and is evenly distributed with 8 through holes, be connected with the support of injection machine by the outer mounting hole 47 in 8, outside, 8 interior mounting holes 46 of inner side are connected with the screw rod of injection machine.The central through hole 41 arranged in the middle of described annular groove type force snesor, the screw rod for injection machine passes through thus.Install with coordinating of central through hole 41 on described annular groove type force snesor for realizing screw rod, preferably as embodiment one, described central through hole 41 is set to the through hole of stepped ramp type, so that the fixing nut matched with screw rod, realizes the connection of screw rod, location preferably.Screw rod is in rotary moving, is applied to described annular groove type force snesor load, so just achieves the pickup of injection machine back-pressure by nut.The specified output of described annular groove type force snesor is 10V signal, and signal is easy to greatly the process realizing signal.In order to the signal be amplified, therefore be provided with simulating signal amplifying signal amplifier 2, this signal amplifier 2 is placed in terminal box 1.Terminal box 1 is quadrangle box, can be integrally welded with elastic body 4 outer wall.
The strain regions of described annular groove type force snesor is designed to ring channel structures, the cylindrical boss upper surface of own elasticity body 4 upper surface center position and the bottom surface of elastic body 4 lower end groove process ring groove downwards, upwards, the centre of upper and lower like this ring groove 42,43 defines strain beam 44, symmetrical stickup 4 effectors 45 on upper ring groove 42 bottom surface, composition measuring bridge, electric bridge exports mV level analog quantity.Electric bridge exports the signal amplifier 2 connect in terminal box 1, and the specified output of described annular groove type force snesor is 10V voltage signal.
Except the technical characteristic described in instructions, be the known technology of those skilled in the art.
Claims (6)
1. an annular groove type force snesor, comprises terminal box, connector, it is characterized in that:
Also comprise signal amplifier and elastic body;
Described elastic body is cylindrical structure, and the centre bit of end face installs axially extended cylindrical boss thereon, establishes the circular groove coaxial with it in its lower surface;
Central through hole is provided with along described elastomeric axis;
At described elastomeric upper surface ring groove in the arranged outside of the outer wall of described cylindrical boss, corresponding described upper ring groove arranges lower ring groove in the bottom surface of described circular groove, described upper ring groove is not communicated with described lower ring groove, the strain beam of the wall body looping between them;
On described ring groove diapire on stationary distribution multiple effector is set, form measuring bridge;
The notch of described upper ring groove is lived by endless metal diaphragm seal;
Radial outside distribution in the upper surface of described cylindrical boss in central through hole arranges mounting hole in a week, radial outside distribution in described elastomeric upper surface in upper ring groove arranges one week outer mounting hole, and described outer mounting hole and described interior mounting hole are through hole;
Described terminal box is fixedly installed on described elastomeric outer wall; Described signal amplifier to be fixedly installed in described terminal box and to be connected with effector; The outer wall that described connector is fixed on described terminal box is connected with described signal amplifier.
2. a kind of annular groove type force snesor according to claim 1, is characterized in that: the aperture of described central through hole is divided into two sections, and the aperture of epimere is greater than the aperture of hypomere.
3. a kind of annular groove type force snesor according to claim 1 and 2, is characterized in that: in described terminal box, inject casting glue fix described signal amplifier, and the end face of terminal box adopts plate welding sealing.
4. a kind of annular groove type force snesor according to claim 1 and 2, is characterized in that: described effector is pasted on the diapire of ring groove on described.
5. a kind of annular groove type force snesor according to claim 1 and 2, is characterized in that: inject casting glue in ring groove on described and fix described effector, and described endless metal diaphragm is by the notch place of casting glue fixing seal ring groove on described.
6. a kind of annular groove type force snesor according to claim 5, is characterized in that: in described terminal box, inject casting glue fix described signal amplifier, and the end face of terminal box adopts plate welding sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612552.8A CN104316226A (en) | 2014-11-04 | 2014-11-04 | Circular groove type force sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612552.8A CN104316226A (en) | 2014-11-04 | 2014-11-04 | Circular groove type force sensor |
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| Publication Number | Publication Date |
|---|---|
| CN104316226A true CN104316226A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410612552.8A Pending CN104316226A (en) | 2014-11-04 | 2014-11-04 | Circular groove type force sensor |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1591766A2 (en) * | 2004-04-28 | 2005-11-02 | SENSTRONIC Deutschland GmbH | Optical measuring device and force sensor |
| CN201273837Y (en) * | 2008-09-10 | 2009-07-15 | 中航电测仪器股份有限公司 | High precision wheel spoke type sensor |
| CN202177440U (en) * | 2011-07-19 | 2012-03-28 | 宁波金旭电子有限公司 | Weighing sensor |
| CN202420726U (en) * | 2012-01-10 | 2012-09-05 | 陈旭财 | Flange pressure sensor |
| CN204142400U (en) * | 2014-11-04 | 2015-02-04 | 济南金钟电子衡器股份有限公司 | A kind of annular groove type force snesor |
-
2014
- 2014-11-04 CN CN201410612552.8A patent/CN104316226A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1591766A2 (en) * | 2004-04-28 | 2005-11-02 | SENSTRONIC Deutschland GmbH | Optical measuring device and force sensor |
| CN201273837Y (en) * | 2008-09-10 | 2009-07-15 | 中航电测仪器股份有限公司 | High precision wheel spoke type sensor |
| CN202177440U (en) * | 2011-07-19 | 2012-03-28 | 宁波金旭电子有限公司 | Weighing sensor |
| CN202420726U (en) * | 2012-01-10 | 2012-09-05 | 陈旭财 | Flange pressure sensor |
| CN204142400U (en) * | 2014-11-04 | 2015-02-04 | 济南金钟电子衡器股份有限公司 | A kind of annular groove type force snesor |
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Application publication date: 20150128 |
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