阅读说明：本技术 一种压力机滑块下止点位置精度检测系统 (A kind of press ram bottom dead center position precision detection system ) 是由 沈润 王海峰 袁蕴超 冯翌 祝传贺 王利生 于 2019-08-07 设计创作，主要内容包括：本发明提供一种压力机滑块下止点位置精度检测系统,其包括：位置传感器(1)、滑块(2)和下台面(3),所述下台面(3)能够承载双极板(4)于其上,所述滑块(2)能够相对于所述下台面(3)做上下运动、以对所述双极板(4)进行冲压,所述位置传感器(1)设置于所述滑块和所述下台面之间、能够对所述滑块(2)的向下运动的下止点位置进行检测,所述位置传感器(1)电信号连接到数据处理器(5)、以将位置信号传递至所述数据处理器(5)。通过本发明能够及时检测该次冲压加工的双极板是否超差(是否满足需求)；能精准的测量压力机滑块下止点,静态或动态的位置精度,在线检测所冲压的双极板流场沟槽深度是否合格。(The present invention provides a kind of press ram bottom dead center position precision detection system, comprising: position sensor (1), sliding block (2) and following table (3), the following table (3) can carry bipolar plates (4) thereon, the sliding block (2) can move up and down relative to the following table (3), to carry out punching press to the bipolar plates (4), the position sensor (1) is set between the sliding block and the following table, the bottom dead center position of the sliding block (2) moved downward can be detected, position sensor (1) electric signal is connected to data processor (5), position signal is transferred to the data processor (5).Whether whether the bipolar plates that can detect the secondary punch process in time through the invention overproof (meet demand)；Press ram lower dead center can be accurately measured, whether the bipolar plate flow field trench depth of position precision either statically or dynamically, the punching press of on-line checking institute is qualified.)

1. a kind of press ram bottom dead center position precision detection system, it is characterised in that: include:

Position sensor (1), sliding block (2) and following table (3), the following table (3) can carry bipolar plates (4) thereon, institute Stating sliding block (2) can move up and down relative to the following table (3), to carry out punching press, the position to the bipolar plates (4) Sensor (1) is set between the sliding block and the following table, can be to the lower dead center position of the sliding block (2) moved downward It sets and is detected, position sensor (1) electric signal is connected to data processor (5), described position signal to be transferred to Data processor (5).

2. detection system according to claim 1, it is characterised in that:

The position sensor (1) is contact position sensor (11) or non-contact position sensor (12).

3. detection system according to claim 2, it is characterised in that:

The non-contact position sensor (12) is laser displacement sensor.

4. detection system according to any one of claim 1-3, it is characterised in that:

The data processor (5) is also electrically connected with the production line control system of fuel cell (6).

5. detection system according to claim 4, it is characterised in that:

The production line control system includes monitoring system and warning system, the monitoring system and the data processor (5) Electrical connection, and the warning system is electrically connected with the monitoring system.

6. detection system according to any one of claims 1-5, it is characterised in that:

The position sensor (1) is judged by detecting the distance between the lower dead center of the sliding block (2) and the following table The bottom dead center position of the sliding block (2).

7. detection system according to claim 6, it is characterised in that:

The position sensor (1) be able to detect the multiple sliding block (2) move to when lower dead center the lower end surface of the sliding block with Measured distance between the following table, and the measured distance H is compared with pre-determined distance H0, when | H-H0 |≤e When, judge that the bottom dead center position of the movement of this sliding block is met the requirements, when | H-H0 | when > e, judge this sliding block The bottom dead center position of movement is unsatisfactory for requiring, and wherein e is to allow error amount.

8. detection system according to claim 6, it is characterised in that:

The position sensor (1) is able to detect multiple sliding blocks (2) and moves to each sliding block when lower dead center respectively Measured distance between lower end surface and the following table, and each measured distance H is compared with pre-determined distance H0, When | H-H0 | when≤e, judge that the bottom dead center position of the movement of this sliding block is met the requirements, when | H-H0 | when > e, judgement should The bottom dead center position of the movement of a sliding block is unsatisfactory for requiring, and wherein e is to allow error amount.

9. detection system according to claim 8, it is characterised in that:

When the bottom dead center position of the movement of this sliding block is met the requirements, judge that the quality of the sliding block is met the requirements；When When the bottom dead center position of the movement of this sliding block is unsatisfactory for requiring, judge that the quality of the sliding block is unsatisfactory for requiring.

10. detection system according to claim 1 to 9, it is characterised in that:

Position sensor bracket (7) are additionally provided between the position sensor (1) and the following table (3).

Technical field

The invention belongs to field of fuel cell technology, and in particular to a kind of press ram bottom dead center position accuracy detection system System.

Background technique

Fuel cell is a very promising energy technology, compared with existing conventional energy transformation technology, fuel Battery has many advantages, including higher energy conversion efficiency, zero release of pollutant, movement-less part work peace and quiet etc..Combustion Battery is expected there are many type, and the present invention focuses on the field Proton Exchange Membrane Fuel Cells (PEMFC).Although pem fuel Battery has many advantages, such as, but there is also some urgent problems to be solved.

In Proton Exchange Membrane Fuel Cells, bipolar plates are core components, in entire fuel cell pile weight and cost In account for sizable specific gravity (proton exchange membrane fuel cell structure signal and common appearance as shown in Figure 1 and Figure 2), performance Main function is as follows: 1. playing structural support effect for pile；2. to participate in the coolant liquid of the hydrogen of reaction, air and cooling pile Three kinds of media provide circulation passage (or being " flow field "), while again keeping apart three kinds of media；3. electric action, by each list Battery is connected into a whole heap.

The structure of bipolar plate flow field has been largely fixed the uniformity and generation of fuel cell each medium distribution The drainage performance of water, and this two indexs are particularly significant for the performance of fuel cell.Therefore, it is necessary to examine from design aspect is thorough Consider the structure of bipolar plate flow field；The strict control bipolar plate flow field formed precision in terms of processing.

Common dual polar plates of proton exchange membrane fuel cell material has graphite plate and metal plate, and the present invention focuses metal bipolar Plate.Fig. 3 is common metal double polar plate structure schematic diagram.

Common metal blank (stainless steel plate or titanium plate) is with a thickness of 0.06 between 0.12mm, needing to rush by press machine Molded, press machine basic structure is as shown in Figure 4.

Common press machine has hydraulic press or a punching machine, specific structure difference, but basic functional principle is identical, is dynamic Force system drives slide block down, generates larger pressure, makes the plate being placed between sliding block and following table, is being mounted on upper following table Between mold under the action of, output deformation, to stamp out required part.

For the performance for guaranteeing fuel cell, metal double polar plates punch forming precision prescribed is very high, especially groove in flow field Between depth and each bipolar plates, trench depth coherence request is high, generally requires between each piece of bipolar plates, same trench depth Control errors are between several microns.Since press ram is moving component, when moving to lower dead center each time, position meeting Difference, this difference will lead to the bipolar plates very sensitive to depth consistency beyond the error range allowed, Jin Erying Ring the performance of fuel cell.Therefore, other than needing to select the good press of lower dead center consistency, to press bottom dead center position Dynamic monitoring, find that depth direction does not meet the bipolar plates of error requirements and is particularly important in time.

Since the sliding block of fuel battery double plates in the prior art press machine in the production process is under the process of pushing Dead-centre position can not be monitored accurately, can there is a problem of that multiple lower dead center is inconsistent, caused to produce and do not met error requirements Bipolar plates, bipolar plates make the technical problems such as qualification rate is low, therefore researching and designing of the present invention goes out a kind of press ram lower dead center Position precision detection system.

Summary of the invention

Therefore, it is being made the technical problem to be solved in the present invention is that fuel battery double plates in the prior art is overcome to exist The defect that the sliding block of press machine can not be monitored accurately in the bottom dead center position of the process of pushing during work, to provide a kind of pressure Machine sliding block bottom dead center position precision detection system.

The present invention provides a kind of detection system of press machine bottom dead center position comprising:

Position sensor, sliding block and following table, the following table can carry bipolar plates thereon, and the sliding block being capable of phase It moves up and down for the following table, to carry out punching press to the bipolar plates, the position sensor is set to the sliding block Between the following table, the bottom dead center position of the sliding block moved downward can be detected, the position sensor It is electrically connected to data processor, position signal is transferred to the data processor.

Preferably,

The position sensor is contact position sensor or non-contact position sensor.

Preferably,

The non-contact position sensor is laser displacement sensor.

Preferably,

The data processor is also electrically connected with the production line control system of fuel cell.

Preferably,

The production line control system includes monitoring system and warning system, the monitoring system and the data processor Electrical connection, and the warning system is electrically connected with the monitoring system.

Preferably,

The position sensor is by the distance between the lower dead center of the detection sliding block and described following table to judge State the bottom dead center position of sliding block.

Preferably,

The position sensor lower end surface of the sliding block and institute when being able to detect the multiple slide block movement to lower dead center The measured distance between following table is stated, and the measured distance H is compared with pre-determined distance H0, when | H-H0 | when≤e, Judge that the bottom dead center position of the movement of this sliding block is met the requirements, when | H-H0 | when > e, judge the fortune of this sliding block Dynamic bottom dead center position is unsatisfactory for requiring, and wherein e is to allow error amount.

Preferably,

The position sensor is able to detect multiple sliding blocks and is moved to when lower dead center respectively under each sliding block Measured distance between end face and the following table, and each measured distance H is compared with pre-determined distance H0, when | H-H0 | when≤e, judge that the bottom dead center position of the movement of this sliding block is met the requirements, when | H-H0 | when > e, judge this time The bottom dead center position of the movement of the sliding block is unsatisfactory for requiring, and wherein e is to allow error amount.

Preferably,

When the bottom dead center position of the movement of this sliding block is met the requirements, judge that the quality satisfaction of the sliding block is wanted It asks；When the bottom dead center position of the movement of this sliding block is unsatisfactory for requiring, judge that the quality of the sliding block is unsatisfactory for requiring.

Preferably,

Position sensor bracket is additionally provided between the position sensor and the following table.

A kind of press ram bottom dead center position precision detection system provided by the invention has the following beneficial effects:

The present invention, being capable of moving downward to the sliding block by the way that position sensor is arranged between sliding block and following table Bottom dead center position is detected, and can obtain the signal message of sliding block bottom dead center position by being electrically connected to data processor, It can be used to detect press ram bottom dead center position precision；When press machine continuous punching bipolar plates, lower dead center each time is monitored Position, find the overproof press cycle of bottom dead center position in time, and whether the bipolar plates for detecting the secondary punch process in time surpass Difference (whether meet demand)；Press ram lower dead center can be accurately measured, position precision either statically or dynamically is a kind of good Detection pressing precision, control metal double polar plates formed precision detection instrument；Press machine bottom dead center position of the present invention Precision detection system, on fuel battery metal double polar plate punch forming production line, the bipolar plate flow field of on-line checking institute punching press Whether trench depth is qualified.

Detailed description of the invention

Fig. 1 is the proton exchange membrane in press ram bottom dead center position precision detection system of the invention including bipolar plates Fuel cell structure schematic diagram；

Fig. 2 is the structural representation of the metal double polar plates in press ram bottom dead center position precision detection system of the invention Figure；

Fig. 3 is the structure chart of press machine of the invention；

Fig. 4 is the structural schematic diagram of the embodiment 1 of press ram bottom dead center position precision detection system of the invention；

Fig. 5 is the structural schematic diagram of the embodiment 2 of press ram bottom dead center position precision detection system of the invention；

Fig. 6 is the structural schematic diagram of the embodiment 3 of press ram bottom dead center position precision detection system of the invention；

Fig. 7 is the structural schematic diagram of the embodiment 4 of press ram bottom dead center position precision detection system of the invention.

Appended drawing reference indicates in figure are as follows:

1, position sensor；11, contact position sensor；12, non-contact position sensor；2, sliding block；3, it leaves office Face；4, bipolar plates；5, data processor；6, production line control system；7, position sensor bracket；8, membrane electrode；9, flow field； 10, fuselage；20, transmission system；30, data line.

Specific embodiment

As shown in figs. 1-7, the present invention provides a kind of detection system of press machine bottom dead center position comprising:

Position sensor 1, sliding block 2 and following table 3, the following table 3 can carry bipolar plates 4 thereon, the sliding block 2 It can move up and down relative to the following table 3, to carry out punching press to the bipolar plates 4, the position sensor 1 is set to Between the sliding block and the following table, the bottom dead center position of the sliding block 2 moved downward can be detected, institute's rheme It sets 1 electric signal of sensor and is connected to data processor 5, position signal is transferred to the data processor 5.

The present invention, being capable of moving downward to the sliding block by the way that position sensor is arranged between sliding block and following table Bottom dead center position is detected, and can obtain the signal message of sliding block bottom dead center position by being electrically connected to data processor, It can be used to detect press ram bottom dead center position precision；When press machine continuous punching bipolar plates, lower dead center each time is monitored Position, find the overproof press cycle of bottom dead center position in time, and whether the bipolar plates for detecting the secondary punch process in time surpass Difference (whether meet demand)；Press ram lower dead center can be accurately measured, position precision either statically or dynamically is a kind of good Detection pressing precision, control metal double polar plates formed precision detection instrument；Press machine bottom dead center position of the present invention Precision detection system, on fuel battery metal double polar plate punch forming production line, the bipolar plate flow field of on-line checking institute punching press Whether trench depth is qualified.

Preferably,

The position sensor 1 is contact position sensor 11 or non-contact position sensor 12.This is the present invention Position sensor preferred constructive form, can be contacted with the bottom surface of sliding block by contact position sensor It detects the distance between sliding block and following table and then detects the location information of lower dead center, pass through non-contact position sensor energy It is enough to carry out non-contact (not having to contact, pass through influence or other means) detection sliding block and following table with the bottom surface of sliding block The distance between, and then detect lower dead center location information.

Preferably,

The non-contact position sensor 12 is laser displacement sensor.This is contactless position sensing of the invention The preferred constructive form of device can launch laser by contactless laser displacement sensor to detect and judge sliding block The position of lower dead center and distance accurately detect the location information of lower dead center.

Preferably,

The data processor 5 is also electrically connected with the production line control system of fuel cell 6.This is the embodiment of the present invention Preferred constructive form in 3 and 4 is passed data by the way that data processor to be electrically connected can be realized with production line control system It transports in the control system of production line, is gone forward side by side in bipolar plates processing elder generation to the detection of the position signal of bipolar plates with realizing The effect and purpose of row transmission and control.

Preferably,

The production line control system includes monitoring system and warning system, the monitoring system and the data processor 5 electrical connections, and the warning system is electrically connected with the monitoring system.It can be to sliding block lower dead center by setting monitoring system Position detection signal real-time monitoring, and police is issued by the warning system being connected to when its bottom dead center position is unsatisfactory for requiring Report needs to be carried out exclusion or in addition to remind operator to carry out note that i.e. block bipolar plates may be undesirable Processing.

Preferably,

The position sensor 1 is judged by detecting the distance between the lower dead center of the sliding block 2 and the following table The bottom dead center position of the sliding block 2.This is the location information for detect and judge lower dead center of position sensor of the invention Preferred embodiment, i.e., realized, can be accurately obtained under sliding block only by way of distance between sliding block lower dead center and following table The location information of point.

Preferably,

The position sensor 1 be able to detect the multiple sliding block 2 move to when lower dead center the lower end surface of the sliding block with Measured distance between the following table, and the measured distance H is compared with pre-determined distance H0, when | H-H0 |≤e When, judge that the bottom dead center position of the movement of this sliding block is met the requirements, when | H-H0 | when > e, judge this sliding block The bottom dead center position of movement is unsatisfactory for requiring, and wherein e is to allow error amount.This is of the invention multiple to the progress of same sliding block Pushing detects or arbitrarily downgrades under the preferred hand that the position of the sliding block lower dead center of the multiple pushing process of itself is detected and judged Section and mode detect press ram bottom dead center position precision, i.e. static height, evaluate press machine bottom dead center position essence with this Whether degree is qualified.Press ram position should control in a reasonable range, for example, spacing is set between sliding block and following table Within 280 ± 0.05mm, this value if more than is that sliding block bottom dead center position is overproof (i.e. unqualified).

Preferably,

The position sensor 1 is able to detect multiple sliding blocks 2 and moves to each sliding block when lower dead center respectively Measured distance between lower end surface and the following table, and each measured distance H is compared with pre-determined distance H0, When | H-H0 | when≤e, judge that the bottom dead center position of the movement of this sliding block is met the requirements, when | H-H0 | when > e, judgement should The bottom dead center position of the movement of the secondary sliding block is unsatisfactory for requiring, and wherein e is to allow error amount.This is of the invention to multiple The position that sliding block is pushed the sliding block lower dead center of detection respectively carries out the preferred means and mode of dynamic detection and judgement, detection Press ram bottom dead center position precision, i.e., the high consistency between each bottom dead center position, evaluates press machine lower dead center with this Whether position precision is qualified.Press ram position should control in a reasonable range, for example, between sliding block and following table Spacing is set as within 280 ± 0.05mm, this value if more than is that sliding block bottom dead center position is overproof (i.e. unqualified).

Preferably,

When the bottom dead center position of the movement of this sliding block is met the requirements, judge that the quality satisfaction of the sliding block is wanted It asks；When the bottom dead center position of the movement of this sliding block is unsatisfactory for requiring, judge that the quality of the sliding block is unsatisfactory for requiring. This is the preferred judgement qualification or underproof preferred embodiment that sliding block bottom dead center position of the invention detects, and meets above-mentioned error Illustrate that the structure of the bipolar plates is qualified in range, be unsatisfactory for explanation and stamp out the bipolar plates come that requirement can not be reached, as not It is qualified.

Preferably,

Position sensor bracket 7 is additionally provided between the position sensor 1 and the following table 3.Pass through position sensing Device bracket can be supported effect to position sensor, to realize the accurate detection to sliding block bottom dead center position.

1, position sensor uses contact, and data collected are only output to Data processing, for detecting press machine In the case of either statically or dynamically, sliding block bottom dead center position precision.As shown in Figure 4.

2, position sensor uses contactless, and generally common high precision laser displacement sensor, data collected are only It is output to Data processing, in the case of detecting press machine either statically or dynamically, sliding block bottom dead center position precision.As shown in Figure 5.

3, position sensor uses contact, and data collected are output in data processor, and device through this process, It is output to fuel cell producing line monitoring system.When detecting punching press, sliding block bottom dead center position is overproof, the warning system in producing line Prompt is issued, while the bipolar plates by this punching press automatically or manually are taken out, carries out further fine detection.: press machine Slide position should control in a reasonable range, for example, between sliding block and following table spacing be set as 280 ± 0.05mm it Interior, this value if more than is that sliding block bottom dead center position is overproof.When discovery has the overproof press cycle in position, shut down, The pole plate of the secondary punching press is individually taken out, detailed dimensional gaughing is carried out, referred to as further detection in detail.As shown in Figure 6.

4, position sensor uses contactless, and data collected are output in data processor, and through this process Device is output to fuel cell producing line monitoring system.When detecting punching press, sliding block bottom dead center position is overproof, the alarm system in producing line System issues prompt, while the bipolar plates by this punching press automatically or manually are taken out, and carries out further fine detection.Such as Fig. 7 It is shown.

The scheme that the present invention detects sliding block lower dead center on press using position sensor belongs to head to monitor lower dead center Wound；Meanwhile the quality control that monitoring system is included in bipolar plates punching course being also belonged to pioneering.It can be said that the present invention is in press Slide position monitoring and two aspect of bipolar plates stamping quality control all have initiative.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.With It is only the preferred embodiment of the present invention described in upper, it is noted that for those skilled in the art, not Under the premise of being detached from the technology of the present invention principle, several improvements and modifications can also be made, these improvements and modifications also should be regarded as this The protection scope of invention.