CN106526327B - DCR micro-resistance automatic measuring machine - Google Patents
DCR micro-resistance automatic measuring machine Download PDFInfo
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- CN106526327B CN106526327B CN201611217343.9A CN201611217343A CN106526327B CN 106526327 B CN106526327 B CN 106526327B CN 201611217343 A CN201611217343 A CN 201611217343A CN 106526327 B CN106526327 B CN 106526327B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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Abstract
The invention discloses an automatic measuring machine for a DCR micro resistor, which comprises a measuring table, a positioning jig, a measuring carrier, a four-terminal measuring circuit, a driving mechanism and a data acquisition and processing system, wherein a plurality of products to be measured are clamped and fixed through the positioning jig, and the four measuring probes of the four-terminal measuring circuit are electrically connected with four joints of the micro resistor on the products to be measured through the matching design of the positioning jig, the measuring carrier and the driving mechanism. The measured result of the four-terminal measuring circuit is collected and processed by the data collector, the measured data can be permanently stored and uploaded to the MES system, and a customer can conveniently inquire the production data remotely at any time.
Description
Technical Field
The invention relates to a micro-resistance measuring machine, in particular to a DCR micro-resistance automatic measuring machine.
Background
At present, a two-terminal measuring instrument is often adopted for measuring DCR micro-resistance of a mobile phone fingerprint cover plate module and the like, but the resistance value of a product measured by a production line is between 0.0005 omega and 0.5 omega, if the resistance value of a wire is between 1 omega and 1.5 omega by using a two-terminal measuring method, the internal resistance of the wire is far greater than the resistance of the product to be measured, and in the measuring process, the impedance of a system can be changed due to the influence of factors such as contact, ageing of a measuring probe and the like, and accurate compensation cannot be performed. That is, when the DCR micro-resistance measurement is performed, since the resistance of the wire occupies a large proportion relative to the resistance of the product to be measured, the internal resistance of the wire is far greater than the resistance of the product to be measured, the deviation of the measured value is large, and accurate measurement cannot be performed.
Disclosure of Invention
In order to solve the technical problems, the invention provides the DCR micro-resistance automatic measuring machine, which can remarkably improve the measuring efficiency and quality stability, promote the mass productivity of products and the cost reduction, ensure the consistency of the products, intercept the bad flow of the last work station into the work station, permanently save the measuring data and upload the measuring data to an MES system.
The technical scheme of the invention is realized as follows:
the DCR micro-resistance automatic measuring machine comprises a measuring table, a positioning jig, a measuring carrier, a four-terminal measuring circuit, a driving mechanism and a data acquisition and processing system, wherein the positioning jig comprises a positioning bottom plate and a positioning cover plate, a plurality of mounting positions for positioning a product to be measured are formed on the positioning bottom plate, and the product to be measured is placed in the corresponding mounting positions and clamped and fixed through the positioning cover plate; the measuring carrier comprises a lower measuring plate and an upper measuring plate, two lower measuring probes are positioned on the lower measuring plate corresponding to a micro resistor of a product to be measured, two upper measuring probes are positioned on the upper measuring plate, and the two lower measuring probes and the two upper measuring probes are connected to the four-terminal measuring circuit through wiring as four joints; the lower measuring plate is arranged on the measuring table, the upper measuring plate is arranged on the driving mechanism, the positioning jig is arranged on the lower measuring plate, and the lower measuring probe can pass through the positioning bottom plate to be in electrical contact with a product to be measured; the driving mechanism can drive the upper measuring plate up and down so as to drive the upper measuring probe to pass through the positioning cover plate to be in electrical contact with a product to be measured; the data acquisition processing system comprises a data acquisition device for acquiring and processing the data measured by the four-terminal measuring circuit, a computer or a server for locally storing or/and uploading the data processed by the data acquisition device to a company MES system, and a display for displaying the measuring result.
Further, be equipped with the installing support on the measuring table, the installing support includes left side board, right side board and roof, actuating mechanism includes left fixed plate, right fixed plate, left guide rail, right guide rail, sliding plate, lower air cylinder board and lower air cylinder, left guide rail vertical set firmly in on the left fixed plate, right guide rail vertical set firmly in on the right fixed plate, left side fixed plate rigid coupling in left side board inboard, right fixed plate rigid coupling in right side board inboard, the sliding plate transversely sets up, its left and right ends pass through the slider with left guide rail with right guide rail sliding connection, lower air cylinder pass through lower air cylinder board rigid coupling in the roof inboard, its power output shaft with sliding plate middle part fixed connection.
Further, the device comprises a two-dimensional code scanning device, a two-dimensional code containing product information is arranged on a product to be measured, when a plurality of products to be measured are positioned on the positioning jig, the two-dimensional code is exposed on one side of the positioning jig, the two-dimensional code scanning device comprises a plurality of two-dimensional code scanning guns corresponding to the quantity of the products to be measured on the positioning jig and an adjusting mechanism for realizing that the two-dimensional code scanning guns move, adjust and align the two-dimensional code on the product to be measured, and data read by the two-dimensional code scanning guns are output to the computer or the server and the display.
Further, the adjusting mechanism comprises an upper support, a lower support and at least two groups of lifting connecting rods arranged between the lower support and the upper support, each group of lifting connecting rods comprises two lifting connecting rods which are arranged in a crossing way, a yielding strip hole A is arranged at the crossing position of the two lifting connecting rods, and a pivot is arranged in the overlapping part of the two yielding strip holes A in a penetrating way; one end of one lifting connecting rod in each group of lifting connecting rods is hinged with one side of the lower support, and one end of the other lifting connecting rod is hinged with one side of the upper support; an upper adjusting block is arranged on the surface, opposite to the upper support, of the other side of the upper support, an abdication strip hole B is formed in the middle of the upper adjusting block, a lower adjusting block is arranged on the surface, opposite to the upper support, of the other side of the lower support, and an abdication strip hole C is formed in the middle of the lower adjusting block; the other end of one lifting connecting rod in each group of lifting connecting rods is in sliding connection with the abdication strip hole B through a pin shaft, and the other end of the other lifting connecting rod is in sliding connection with the abdication strip hole C through a pin shaft; one side, close to the hinged connection, of the upper support is fixedly connected with a bearing plate, the two-dimensional code scanning gun is arranged on the bearing plate, and the lower support is arranged on the measuring table; and a fastener is connected to one side of the upper support close to the pin shaft in a threaded manner, and the pin shaft can be driven to slide in the yielding strip hole B by screwing in the fastener.
Further, the structure that the positioning jig is installed on the lower measuring plate is: the lower measuring plate is embedded on the measuring table and is flush with the surface of the measuring table, the measuring carrier further comprises a left adapter seat and a right adapter seat, the left adapter seat and the right adapter seat are detachably fixed on the lower measuring plate and the measuring table through fastener intervals, and two ends of a positioning bottom plate of the positioning jig are detachably fixed on the left adapter seat and the right adapter seat through fasteners.
Further, four products to be measured are positioned in each positioning jig, and four two-dimensional code scanning guns are arranged corresponding to the four products to be measured.
Furthermore, the product to be measured is a mobile phone fingerprint cover plate module, each mobile phone fingerprint cover plate module is provided with two micro resistors to be measured, and the two micro resistors are provided with two shared joints.
Furthermore, one side of the positioning bottom plate is rotationally connected with one side of the positioning cover plate through a rotating shaft, and the other side of the positioning bottom plate is in buckle connection with the other side of the positioning cover plate through a buckle structure.
Furthermore, an adapter plate for carrying out resistance correction on the upper measuring probe, the lower measuring probe and wiring thereof is arranged, the four-terminal measuring circuit is connected with the upper measuring probe and the wiring between the lower measuring probe through an electric connector in an inserting mode, when the upper measuring probe, the lower measuring probe and the wiring are required to be subjected to resistance correction, the adapter plate is connected between a male end and a female end of the electric connector, and a resistance correction module is arranged in the data collector.
Further, the two-dimensional code scanning device further comprises a control system for controlling the driving mechanism, the two-dimensional code scanning device and the data acquisition processing system.
The beneficial effects of the invention are as follows: the invention provides an automatic measuring machine for DCR micro-resistance, which realizes clamping and fixing of a plurality of products to be measured through a positioning jig, realizes the electric connection between a lower measuring probe on the lower measuring plate and a contact point of the products to be measured through the positioning base plate of the positioning jig mounted on the lower measuring plate of a measuring carrier, and realizes the electric contact between the upper measuring plate and the upper measuring probe on the upper measuring plate by driving the upper measuring plate of the measuring carrier up and down through a positioning cover plate by mounting the upper measuring plate of the measuring carrier on a driving mechanism, thereby completing the electric connection between the four measuring probes of a four-terminal measuring circuit and the four contact points of the micro-resistance on the products to be measured. The design of the positioning jig and the measuring carrier can measure a plurality of products to be measured at one time, so that the measuring efficiency and the quality stability can be remarkably improved, the mass production performance of the products is improved, the cost is reduced, and the consistency of the products is ensured. The measured result of the four-terminal measuring circuit is collected and processed by the data collector, the measured data can be permanently stored and uploaded to the MES system, and a customer can conveniently inquire the production data remotely at any time. Preferably, the DCR micro-resistance automatic measuring machine integrates a two-dimensional code scanning device, and comprises a plurality of two-dimensional code scanning guns and an adjusting mechanism for realizing the movement adjustment of the two-dimensional code scanning guns and aiming at the two-dimensional code on a product to be measured. Therefore, by arranging the two-dimensional code scanning gun, the two-dimensional code containing the product related information on the product to be measured can be read to know the product related information, for example, whether the product to be measured is an NG product at the last station or not can be known, if the product is an NG product at the last station, the DCR micro-resistance automatic measuring machine can not measure, the display interface can be prompted in red to intercept defective products of the last station from flowing into the current station, and the measured resistance data and the measured result can be correlated with the product information to be used as a reference of the next station or for inquiry.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of the connection of the data collector with the upper and lower measuring probes according to the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
FIG. 4 is a perspective view of the driving mechanism, positioning tool and measuring tool of the present invention;
FIG. 5 is a side view of the driving mechanism, positioning tool and measuring tool of the present invention;
FIG. 6 is a top view of the driving mechanism, positioning tool and measuring tool of the present invention;
FIG. 7 is a perspective view of a two-dimensional code scanner and a positioning jig according to the present invention;
FIG. 8 is a side view of a two-dimensional code scanner and a positioning jig according to the present invention;
FIG. 9 is a perspective view of the positioning fixture and the product to be measured according to the present invention;
FIG. 10 is a perspective view showing the alignment jig and the product to be measured according to the present invention;
FIG. 11 is a schematic diagram of the cooperation of the data collector and the adapter plate in the present invention;
the following description is made with reference to the accompanying drawings:
1-measuring table, 2-positioning jig, 21-positioning bottom plate, 22-positioning cover plate, 23-fastening structure, 3-measuring carrier, 31-lower measuring plate, 311-lower measuring probe, 32-upper measuring plate, 321-upper measuring probe, 33-wiring, 34-left adapter, 35-right adapter, 4-driving mechanism, 41-left fixed plate, 42-right fixed plate, 43-left guide rail, 44-right guide rail, 45-sliding plate, 46-lower air cylinder plate, 47-lower air cylinder, 5-data acquisition processing system, 51-data collector, 52-computer or server, 53-display, 6-mounting bracket, 61-left side plate, 62-right side plate, 63-top plate, 7-two-dimensional code scanning device, 71-two-dimensional code scanning gun, 72-adjusting mechanism, 721-upper support, 722-lower support, 723-lifting connecting rod, 7231-yield bar hole A, 724-pivot, 725-upper adjusting block, 7251-yield bar hole B, 726-lower adjusting block, 727-pin hole 729-bearing plate, 729-two-dimensional code scanning device, 729-two-dimensional code bearing plate.
Detailed Description
In order that the technical content of the present invention may be more clearly understood, the following detailed description of the embodiments is given only for better understanding of the content of the present invention and is not intended to limit the scope of the present invention.
As shown in fig. 1, 2 and 3, the DCR micro-resistance automatic measuring machine comprises a measuring table 1, a positioning jig 2, a measuring carrier 3, a four-terminal measuring circuit, a driving mechanism 4 and a data acquisition and processing system 5, wherein the positioning jig comprises a positioning bottom plate 21 and a positioning cover plate 22, a plurality of mounting positions for positioning a product 9 to be measured are formed on the positioning bottom plate, and the product to be measured is placed in the corresponding mounting positions and clamped and fixed through the positioning cover plate; the measuring carrier comprises a lower measuring plate 31 and an upper measuring plate 32, two lower measuring probes 311 are positioned on the lower measuring plate corresponding to a micro resistor 91 of a product to be measured, two upper measuring probes 321 are positioned on the upper measuring plate, and the two lower measuring probes and the two upper measuring probes are connected to the four-terminal measuring circuit through a wiring 33 as four joints; the lower measuring plate is arranged on the measuring table, the upper measuring plate is arranged on the driving mechanism, the positioning jig is arranged on the lower measuring plate, and the lower measuring probe can pass through the positioning bottom plate to be in electrical contact with a product to be measured; the driving mechanism can drive the upper measuring plate up and down so as to drive the upper measuring probe to pass through the positioning cover plate to be in electrical contact with a product to be measured; the data acquisition processing system comprises a data acquisition device 51 for acquiring and processing the data measured by the four-terminal measuring circuit, a computer or server 52 for locally storing or/and uploading the data processed by the data acquisition device to a company MES system, and a display 53 for displaying the measuring result. Therefore, a plurality of products to be measured can be clamped and fixed through the positioning jig, the positioning bottom plate of the positioning jig is arranged on the lower measuring plate of the measuring carrier, the electric connection between the lower measuring probe on the lower measuring plate and the contact point of the products to be measured can be realized, the upper measuring plate of the measuring carrier is arranged on the driving mechanism, the driving mechanism drives the upper measuring plate and the upper measuring probe on the upper measuring plate up and down to pass through the positioning cover plate to be in electric contact with the products to be measured, so that the electric connection between the four measuring probes of the four-terminal measuring circuit and the four contact points of the micro resistor on the products to be measured is completed, the function of measuring the micro resistor by adopting a four-terminal measuring method is realized, the DCR micro resistor automatic measuring machine is opposite to the two-terminal measuring machine, the influence of a measuring wire on a measuring value can be eliminated to the maximum, the wire and the internal resistance of a system can be accurately compensated, and the measuring precision is greatly improved. The design of the positioning jig and the measuring carrier can measure a plurality of products to be measured at one time, so that the measuring efficiency and the quality stability can be remarkably improved, the mass production performance of the products is improved, the cost is reduced, and the consistency of the products is ensured. The measured result of the four-terminal measuring circuit is collected and processed by the data collector, the measured data can be permanently stored and uploaded to the MES system, and a customer can conveniently inquire the production data remotely at any time.
Preferably, referring to fig. 4, 5 and 6, the measuring table is provided with a mounting bracket 6, the mounting bracket includes a left side plate 61, a right side plate 62 and a top plate 63, the driving mechanism includes a left fixing plate 41, a right fixing plate 42, a left guide rail 43, a right guide rail 44, a sliding plate 45, a lower air cylinder plate 46 and a lower air cylinder 47, the left guide rail is vertically fixed on the left fixing plate, the right guide rail is vertically fixed on the right fixing plate, the left fixing plate is fixedly connected on the inner side of the left side plate, the right fixing plate is fixedly connected on the inner side of the right side plate, the sliding plate is transversely arranged, the left end and the right end of the sliding plate are slidably connected with the left guide rail and the right guide rail through a sliding block, the lower air cylinder is fixedly connected on the inner side of the top plate through the lower air cylinder plate, and the power output shaft of the lower air cylinder is fixedly connected with the middle part of the sliding plate. Therefore, the sliding plate is pushed by the lower pressure cylinder and slides up and down on the left guide rail and the right guide rail, and the upper measuring plate can be driven up and down by the driving mechanism so as to drive the upper measuring probe to pass through the positioning cover plate and electrically contact with the product to be measured.
Preferably, referring to fig. 7 and 8, the device further comprises a two-dimensional code scanning device 7, a two-dimensional code 92 containing product information is arranged on the product to be measured, when a plurality of products to be measured are positioned on the positioning jig, the two-dimensional code is exposed on one side of the positioning jig, the two-dimensional code scanning device comprises a plurality of two-dimensional code scanning guns 71 corresponding to the quantity of the products to be measured on the positioning jig and an adjusting mechanism 72 for realizing that the two-dimensional code scanning guns move and adjust the two-dimensional code on the product to be measured, and data read by the two-dimensional code scanning guns are output to the computer or the server and the display. Therefore, by arranging the two-dimensional code scanning gun, the two-dimensional code containing the product related information on the product to be measured can be read to know the product related information, for example, whether the product to be measured is an NG product at the last station or not can be known, if the product is an NG product at the last station, the DCR micro-resistance automatic measuring machine can not measure, the display interface can be prompted in red to intercept defective products of the last station from flowing into the current station, and the measured resistance data and the measured result can be correlated with the product information to be used as a reference of the next station or for inquiry.
Preferably, referring to fig. 7 and 8, the adjusting mechanism includes an upper support 721, a lower support 722, and at least two sets of lifting links disposed between the lower support and the upper support, each set of lifting links includes two lifting links 723 disposed in a crossing manner, two lifting links are provided with a yielding strip hole a7231 at a crossing position, and a pivot 724 is disposed in an overlapping portion of the two yielding strip holes a in a penetrating manner; one end of one lifting connecting rod in each group of lifting connecting rods is hinged with one side of the lower support, and one end of the other lifting connecting rod is hinged with one side of the upper support; an upper adjusting block 725 is arranged on the surface of the other side of the upper support, which is opposite to the lower support, the middle part of the upper adjusting block is provided with a yielding strip hole B7251, a lower adjusting block 726 is arranged on the surface of the other side of the lower support, which is opposite to the upper support, and the middle part of the lower adjusting block is provided with a yielding strip hole C7261; the other end of one lifting connecting rod in each group of lifting connecting rods is in sliding connection with the abdication strip hole B through a pin roll 727, and the other end of the other lifting connecting rod is in sliding connection with the abdication strip hole C through a pin roll; one side, close to the hinged connection, of the upper support is fixedly connected with a bearing plate 728, the two-dimensional code scanning gun is arranged on the bearing plate, and the lower support is arranged on the measuring table; a fastener 729 is connected to one side of the upper support close to the pin shaft in a threaded manner, and the pin shaft can be driven to slide in the yielding strip hole B by screwing the fastener. In this way, as one end of the lifting connecting rod is hinged with the upper support or the lower support, the other end of the lifting connecting rod is in sliding connection, the middle parts of the two lifting connecting rods are matched with the yielding strip hole A through the pivot, so that the linkage function is realized, namely, the pin shaft can be driven to slide in the yielding strip hole B or the yielding strip hole C through screwing in and screwing out a fastener (manually-adjusted screw or screw), and the lifting function of the upper support relative to the lower support is further realized; the two-dimensional code scanning gun is fixed on the upper support through the bearing plate, so that the function of adjusting the height of the two-dimensional code scanning gun in the Z-axis direction can be realized. In other embodiments, there is a mechanism for adjusting the two-dimensional code scanning gun in the X direction, and in particular implementation, in order to align the two-dimensional code scanning gun with the two-dimensional code of the product to be measured on the positioning jig, the bearing plate can be designed to be inclined relative to the upper support, so that the two-dimensional code scanning gun can scan the two-dimensional code of the product to be measured conveniently.
Preferably, referring to fig. 4, the structure that the positioning jig is mounted on the lower measuring plate is: the lower measuring plate is embedded on the measuring table and is flush with the surface of the measuring table, the measuring carrier further comprises a left adapter seat 34 and a right adapter seat 35, the left adapter seat and the right adapter seat are detachably fixed on the lower measuring plate and the measuring table through fastener intervals, and two ends of a positioning bottom plate of the positioning jig are detachably fixed on the left adapter seat and the right adapter seat through fasteners. Like this, can carry out a support to the location tool through left adapter and right adapter, the location tool can be dismantled and fix on left adapter and right adapter, when using not unidimensional location tool to the convenience is changed, expands the adaptability of measuring.
Preferably, referring to fig. 9 and 10, four products to be measured are positioned in each positioning jig, and four two-dimensional code scanning guns are provided corresponding to the four products to be measured. Four two-dimensional code scanning guns can sweep four two-dimensional codes of products to be measured in sequence from left to right to improve work efficiency. Preferably, the product to be measured is a mobile phone fingerprint cover plate module, each mobile phone fingerprint cover plate module is provided with two micro resistors to be measured, and the two micro electric groups are provided with two shared joints. Therefore, the two micro-resistors of the fingerprint cover plate module of the mobile phone can be measured simultaneously, and the four-terminal measuring method is adopted, so that two contacts are shared, and the use of a measuring probe can be reduced.
Preferably, referring to fig. 9 and 10, one side of the positioning bottom plate is rotatably connected with one side of the positioning cover plate through a rotating shaft, and the other side of the positioning bottom plate is in snap connection with the other side of the positioning cover plate through a snap structure 23. Therefore, before measurement, the product to be measured is placed on the installation position of the positioning bottom plate in sequence, then the product to be measured is turned to the positioning cover plate, and the positioning cover plate is connected with the positioning bottom plate through the buckle, so that the product to be measured is clamped and fixed.
Preferably, referring to fig. 11, an adapter plate 8 for performing resistance correction on the upper measurement probe, the lower measurement probe and wiring thereof is provided, the wiring between the four-terminal measurement circuit and the upper measurement probe and the wiring between the four-terminal measurement circuit and the lower measurement probe are plugged through an electrical connector, when the resistance correction on the upper measurement probe, the lower measurement probe and the wiring is required, the adapter plate is connected between a male end and a female end of the electrical connector, and a resistance correction module is built in the data collector. When the upper measuring probe, the lower measuring probe and the wiring thereof are used for a long time, impedance affecting the measuring accuracy can be generated, and the impedance can be corrected by arranging the adapter plate, so that the measuring accuracy is improved.
Preferably, the system further comprises a control system for controlling the driving mechanism, the two-dimensional code scanning device and the data acquisition and processing system. By arranging the control system, the driving mechanism, the two-dimensional code scanning device and the data acquisition and processing system can be intelligently controlled, so that automatic operation is realized. The built-in channel selector of the DCR micro-resistance automatic measuring machine can automatically test 8 groups of resistance values of four products at the same time, and has simple operation picture and test accuracy of one thousandth ohm.
The operation method of the DCR micro-resistance automatic measuring machine is as follows:
the DCR micro-resistance measuring software is installed on a computer, information such as a flow card number, a product model, a station position, an employee work number, the impedance measurement of the sequence and the like is input in a starting interface, then a positioning cover plate of a positioning jig is opened, four products to be measured are installed, the positioning jig is installed on a lower measuring plate, then a trigger key is pressed to start measuring, at the moment, the lower measuring cylinder is started, an upper measuring plate is driven to press on the positioning jig through a sliding plate, namely, an upper measuring probe and a lower measuring probe are electrically contacted with a contact point of a micro-resistance of the product to be measured, simultaneously, a two-dimensional code scanning gun on a machine bench scans two-dimensional codes of the four products to be measured sequentially from left to right, if the function measurement of the previous station is an NG product, the machine bench can not be measured, a display interface can be red-prompting, the function measurement of the previous station is an OK product, the machine bench starts a data acquisition device to measure, after 2 seconds, the lower measuring cylinder is lifted, a display displays a measuring result, prompting or NG is displayed, measuring data can be stored locally and/uploaded by a company MES system, and the above actions are repeated.
In summary, the invention solves the problems described in the background art, and provides the DCR micro-resistor automatic measuring machine, which remarkably improves the measuring efficiency and quality stability, improves the mass productivity of products, remarkably reduces the cost, ensures the consistency of products, can intercept defective products of a previous work station from flowing into the work station, permanently stores data, can upload an MES system, and is convenient for customers to remotely inquire production data at any time.
The DCR micro-resistance automatic measuring machine can be widely applied to measuring micro-resistance, is internally provided with a channel selector, can automatically test 8 groups of resistance values at the same time, has simple operation picture and has the testing precision of one thousandth ohm. The tested values may be stored at designated path locations as desired.
The above embodiments are described in detail with reference to the accompanying drawings. Modifications and variations in the above-described embodiments may be made by those skilled in the art without departing from the spirit of the invention, which fall within the scope of the invention.
Claims (8)
1. The utility model provides a DCR micro-resistance automatic measuring machine which characterized in that: the measuring device comprises a measuring table (1), a positioning jig (2), a measuring carrier (3), four-terminal measuring circuits, a driving mechanism (4) and a data acquisition and processing system (5), wherein the positioning jig comprises a positioning bottom plate (21) and a positioning cover plate (22), a plurality of mounting positions for positioning a product (9) to be measured are formed on the positioning bottom plate, the product to be measured is placed in the corresponding mounting positions, and the product to be measured is clamped and fixed through the positioning cover plate; the measuring carrier comprises a lower measuring plate (31) and an upper measuring plate (32), two lower measuring probes (311) are positioned on the lower measuring plate corresponding to a micro resistor (91) of a product to be measured, two upper measuring probes (321) are positioned on the upper measuring plate, and the two lower measuring probes and the two upper measuring probes are connected to the four-terminal measuring circuit through wiring (33) as four joints; the lower measuring plate is arranged on the measuring table, the upper measuring plate is arranged on the driving mechanism, the positioning jig is arranged on the lower measuring plate, and the lower measuring probe can pass through the positioning bottom plate to be in electrical contact with a product to be measured; the driving mechanism can drive the upper measuring plate up and down so as to drive the upper measuring probe to pass through the positioning cover plate to be in electrical contact with a product to be measured; the data acquisition processing system comprises a data acquisition device (51) for acquiring and processing data measured by the four-terminal measuring circuit, a computer or server (52) for locally storing or/and uploading the data processed by the data acquisition device to a company MES system, a display (53) for displaying a measuring result, a two-dimensional code scanning device (7), a two-dimensional code (92) containing product information, and a plurality of products to be measured, wherein the two-dimensional code is exposed on one side of the positioning jig when the products to be measured are positioned on the positioning jig, the two-dimensional code scanning device comprises a plurality of two-dimensional code scanning guns (71) corresponding to the number of the products to be measured on the positioning jig and an adjusting mechanism (72) for realizing the moving adjustment of the two-dimensional code scanning guns to align to the two-dimensional code on the products to be measured, the adjusting mechanism comprises an upper support (721), a lower support (722) and at least two groups of lifting connecting rods arranged between the lower support and the upper support, each group of lifting connecting rods comprises two lifting connecting rods (723) which are arranged in a crossing manner, a pivot rod (7231) is arranged at a crossing position where the two lifting connecting rods are arranged, and a pivot rod (723) is arranged in a position of the two positioning hole (723) and a position is arranged in the overlapping position; one end of one lifting connecting rod in each group of lifting connecting rods is hinged with one side of the lower support, and one end of the other lifting connecting rod is hinged with one side of the upper support; an upper adjusting block (725) is arranged on the surface, opposite to the upper support, of the other side of the upper support, a yielding strip hole B (7251) is formed in the middle of the upper adjusting block, a lower adjusting block (726) is arranged on the surface, opposite to the upper support, of the other side of the lower support, and a yielding strip hole C (7261) is formed in the middle of the lower adjusting block; the other end of one lifting connecting rod in each group of lifting connecting rods is in sliding connection with the abdication strip hole B through a pin shaft (727), and the other end of the other lifting connecting rod is in sliding connection with the abdication strip hole C through a pin shaft; one side, close to the hinged connection, of the upper support is fixedly connected with a bearing plate (728), the two-dimensional code scanning gun is arranged on the bearing plate, and the lower support is arranged on the measuring table; a fastener (729) is connected to one side, close to the pin shaft, of the upper support in a threaded mode, and the pin shaft can be driven to slide in the yielding strip hole B by screwing the fastener.
2. The DCR micro-resistance automatic measuring machine according to claim 1, wherein: the measuring table is provided with a mounting bracket (6), the mounting bracket comprises a left side plate (61), a right side plate (62) and a top plate (63), the driving mechanism comprises a left fixing plate (41), a right fixing plate (42), a left guide rail (43), a right guide rail (44), a sliding plate (45), a lower pressing cylinder plate (46) and a lower pressing cylinder (47), the left guide rail is vertically fixedly arranged on the left fixing plate, the right guide rail is vertically fixedly arranged on the right fixing plate, the left fixing plate is fixedly connected to the inner side of the left side plate, the right fixing plate is fixedly connected to the inner side of the right side plate, the sliding plate is transversely arranged, the left end and the right end of the sliding plate are fixedly connected with the left guide rail and the right guide rail through sliding blocks, the lower pressing cylinder is fixedly connected to the inner side of the top plate through the lower pressing cylinder plate, and the power output shaft of the lower pressing cylinder is fixedly connected with the middle part of the sliding plate.
3. The DCR micro-resistance automatic measuring machine according to claim 1, wherein: the structure that positioning jig install on lower measuring plate is: the lower measuring plate is embedded on the measuring table and is flush with the surface of the measuring table, the measuring carrier further comprises a left adapter seat (34) and a right adapter seat (35), the left adapter seat and the right adapter seat are detachably fixed on the lower measuring plate and the measuring table through fastener intervals, and two ends of a positioning bottom plate of the positioning jig are detachably fixed on the left adapter seat and the right adapter seat through fasteners.
4. The DCR micro-resistance automatic measuring machine according to claim 1, wherein: four products to be measured are positioned in each positioning jig, and four two-dimensional code scanning guns are arranged corresponding to the four products to be measured.
5. The DCR micro-resistance automatic measuring machine according to claim 4, wherein: the product to be measured is a mobile phone fingerprint cover plate module, each mobile phone fingerprint cover plate module is provided with two micro resistors to be measured, and the two micro resistors are provided with two shared joints.
6. The DCR micro-resistance automatic measuring machine according to claim 1, wherein: one side of the positioning bottom plate is rotationally connected with one side of the positioning cover plate through a rotating shaft, and the other side of the positioning bottom plate is in buckling connection with the other side of the positioning cover plate through a buckling structure (23).
7. The DCR micro-resistance automatic measuring machine according to claim 1, wherein: the four-terminal measuring probe is provided with an adapter plate (8) for carrying out resistance correction on the upper measuring probe, the lower measuring probe and wiring thereof, the four-terminal measuring circuit is connected with the wiring between the upper measuring probe and the lower measuring probe through an electric connector in an inserting mode, when the upper measuring probe, the lower measuring probe and the wiring are required to be subjected to resistance correction, the adapter plate is connected between a male end and a female end of the electric connector, and a resistance correction module is arranged in the data collector.
8. The DCR micro-resistance automatic measuring machine according to claim 1, wherein: the two-dimensional code scanning device comprises a driving mechanism, a two-dimensional code scanning device, a data acquisition processing system and a control system.
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| CN107255750A (en) * | 2017-06-16 | 2017-10-17 | 东莞市银辰精密光电股份有限公司 | A kind of intelligent resistance detection means |
| CN108714726B (en) * | 2018-07-26 | 2024-03-26 | 深圳市联鑫致自动化设备有限公司 | Soldering machine |
| CN118068087B (en) * | 2024-04-18 | 2024-07-05 | 业展电子(惠州市)有限公司 | Detachable resistance measuring device |
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