A kind of braided resistance detection device and its detection method

Abstract

The application provides a kind of braided resistance detection device and its detection method, braided resistance detection device includes: braided conveying mechanism, resistance value detection mechanism, visual detection mechanism, pin shearing mechanism and blanking tube.Braided conveying mechanism includes belt, tension pulley and transmission track, transmission track is used to bear braided, belt is used to push braided and slides along transmission track, resistance value detection mechanism, visual detection mechanism and pin shearing mechanism are sequentially arranged along the sliding direction of braided;Pin shearing mechanism includes cutter and blanking hopper, cutter is towards transmission track, cutter is used to separate resistance body from braided, blanking hopper is below cutter, blanking hopper is used to guide resistance body into blanking tube.Reduce standby time in detection process, improve the detection efficiency of braided resistance, and avoid the problem of inaccurate detection accuracy caused by removing resistance in the middle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of resistance processing, in particular to a resistance detection device of a resistance tape and a detection method thereof. BACKGROUND

[0002] In a mass production scenario, a resistance tape is often used to package the shipped resistors, as shown in the figure, which includes a resistance tape 1 composed of a hard paperboard 21 and a glue paper 22, and a plurality of resistor bodies 23 arranged at intervals along the hard paperboard 21. The pins 24 of the resistor bodies 23 are adhered to the hard paperboard 21 by the glue paper 22, and the ends of the pins 24 are exposed. The plurality of resistor bodies 23 are fixed on the resistance tape. The resistance tape ensures that the directions of the resistor bodies 23 are consistent, so that the resistors can be picked up by a machine and inserted into a PCB, thereby facilitating subsequent automatic processing. Figure 1

[0003] However, there are individual defective resistor bodies 23 on the resistance tape, such as resistors without product information printed on the surface, and resistors with non-standard resistance values due to damage during storage and transfer. Therefore, it is necessary to detect the defective resistors on the resistance tape.

[0004] The detection device is at least provided with a resistance value test station and a visual detection station. The former contacts the pins of the resistors and tests their resistance values, and the latter judges whether the appearance of the product is complete and whether the product information printed is missing by taking pictures. When a defective resistor is detected, a mechanical hand is used to pull out the defective resistor body 23. The existing detection device has the following problems:

[0005] The pins 24 are adhered to the hard paperboard 21 by the glue paper 22. During the process of pulling out the defective resistor, a reaction force is generated on the hard paperboard 21. Therefore, the operation of pulling out the defective resistor by the mechanical hand is likely to cause the resistance tape to deform, which makes the resistance tape unable to smoothly flow into the next detection station, and makes the detection equipment unable to operate smoothly, and an operator is needed to arrange to eliminate such faults;

[0006] Further, since there are multiple detection stations, the process of detecting the resistors on the resistance tape and then pulling out the defective resistors by the mechanical hand at each detection station will increase the working hours occupied by the sorting process and reduce the detection efficiency of the resistors. On the other hand, when the defective resistors are pulled out and the resistance tape deforms, the positions of the remaining resistor bodies 23 on the resistance tape change, which will interfere with the detection of other resistors on the resistance tape at the subsequent stations, resulting in inaccurate detection accuracy. SUMMARY

[0007] The present application aims to overcome the deficiencies in the prior art, provide a resistance tape detection device, reduce the standby time during the detection process, improve the detection efficiency of the resistance tape, and avoid the problem of inaccurate detection accuracy caused by pulling out the resistors in the middle. ​

[0008] The object of the present application is achieved by the following technical solutions:

[0009] A kind of resistance detection device of braiding, it includes: braided belt conveying mechanism, resistance value detection mechanism, visual detection mechanism, pin shearing mechanism and blanking tube;

[0010] The braided belt conveying mechanism includes belt, tension pulley and transmission track, the transmission track is used to carry braided belt, the belt is used to push the braided belt along the transmission track sliding, the resistance value detection mechanism, the visual detection mechanism and the pin shearing mechanism are sequentially arranged along the sliding direction of the braided belt;

[0011] The pin shearing mechanism includes cutter and blanking hopper, the cutter is towards the transmission track, the cutter is used to separate resistance body from braided belt, the blanking hopper is below the cutter, and the blanking hopper is used to guide the resistance body into the blanking tube.

[0012] In one embodiment, the resistance value detection mechanism and the visual detection mechanism are each provided with a sorting auxiliary assembly, the sorting auxiliary assembly includes a deviation prevention plate, a floating pressing block, a return spring and a pressing cylinder, the deviation prevention plate covers the transmission track, one side of the deviation prevention plate close to the braided belt is provided with an opening, and a avoiding slot matched with the belt is formed in the deviation prevention plate;

[0013] The floating pressing block is slidably arranged on the deviation prevention plate, one end of the floating pressing block close to the opening is bent to form a pressing head towards the position of the transmission track, the return spring is arranged between the floating pressing block and the deviation prevention plate, and the return spring is used to drive the pressing head away from the resistance body;

[0014] The pressing cylinder is used to drive the pressing head to hold the pin of the resistance body, so that the pin is bent.

[0015] In one embodiment, the resistance value detection mechanism includes an insulating pad, a conductive terminal, a probe and a bracket, the bracket is arranged on the transmission track, the probe is arranged on the bracket, one end of the probe towards the braided belt is provided with an extension part, the insulating pad wraps the extension part, the conductive terminal is embedded in the insulating pad, and the conductive terminal is attached to the extension part, the end of the conductive terminal extends into the transmission track and contacts the pin of the resistance body, so that the probe and the resistance body are conductive.

[0016] In one embodiment, the probe is provided with two, and a space is provided between the two probes.

[0017] In one of the embodiments, the position of the transmission track covered by the anti-deviation plate is provided with a bending auxiliary pad, which is detachably connected with the transmission track.

[0018] In one of the embodiments, the pin shearing mechanism further comprises an upper shaping gate, a lower shaping gate and a lifting cylinder, the upper shaping gate is movably arranged above the lower shaping gate, the lifting cylinder is used to drive the upper shaping gate to approach the lower shaping gate, so that the upper shaping gate and the lower shaping gate jointly press the pins of the resistance body; and the upper shaping gate and the lower shaping gate are provided with a pressing strip at the position in contact with the pins.

[0019] In one of the embodiments, there is a gap between the pressing strip and the transmission track.

[0020] In one of the embodiments, the visual detection mechanism comprises a distance adjusting frame, a camera and a ring-shaped light supplement lamp arranged on the distance adjusting frame, and the camera and the ring-shaped light supplement lamp are both provided with a sliding table at the position connected with the distance adjusting frame.

[0021] In one of the embodiments, the camera and the ring-shaped light supplement lamp are provided with two, and the two cameras respectively shoot the front and back of the resistance body.

[0022] A detection method based on the above-mentioned braided resistance detection device, comprising the following steps:

[0023] Step 1: Place the braided resistance into the braided conveying mechanism, so that the braided resistance is located in the transmission track, and the resistance body is suspended outside the transmission track;

[0024] Step 2: Drive the braided resistance to slide along the transmission track by the belt, when the braided resistance passes through the resistance value detection mechanism, the pins on the resistance body are in contact with the resistance value detection mechanism, and the resistance values of each resistance body on the braided resistance are detected by the resistance value detection mechanism;

[0025] Step 3: If the resistance value is qualified, the belt keeps running to drive the braided resistance to continue sliding; if the resistance value is unqualified, the belt is stopped, the floating pressing block is driven to descend by the pressing-down cylinder, the pressing head is in contact with the pins of the resistance body with unqualified resistance value, and the part of the resistance body suspended outside the transmission track is bent after the belt is restarted;

[0026] Step 4: Take a picture of the braided resistance by the visual detection mechanism; if there is a defect in the appearance of the resistance body, the belt is stopped, the floating pressing block is driven to descend by the pressing-down cylinder, the pressing head is in contact with the pins of the resistance body with unqualified resistance value, and the part of the resistance body suspended outside the transmission track is bent after the belt is restarted;

[0027] Step 5: When the belt drives the braided resistance through the pin shearing mechanism, the cutter contacts the pin on the resistance body which is not bent, so as to separate the resistance body from the braid. The resistance body enters the discharging pipe through the discharging hopper, and the discharging is completed. The bent resistance body avoids the cutter and is discharged from the end of the transmission track with the braid.

[0028] The braided resistance detection device and the detection method thereof reduce the standby time in the detection process, improve the detection efficiency of the braided resistance, and avoid the problem of inaccurate detection precision caused by removing the resistance in the middle. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0030] Figure 1 It is a structural schematic diagram of the braided resistance;

[0031] Figure 2 It is a structural schematic diagram of the braided resistance detection device;

[0032] Figure 3 It is a structural schematic diagram of the resistance value detection mechanism;

[0033] Figure 4 It is a structural schematic diagram of the visual detection mechanism;

[0034] Figure 5 It is a cooperation schematic diagram of the upper shaping gate and the lower shaping gate;

[0035] Figure 6 It is a cooperation state diagram of the bent resistance body and the pressing strip;

[0036] Figure 7 It is a cooperation schematic diagram of the pin shearing mechanism and the braided resistance;

[0037] Figure 8 It is a state schematic diagram of the bent resistance body;

[0038] Figure 9 It is a state schematic diagram of the braid pushing and ejecting insulating pad;

[0039] Figure 10 It is a schematic diagram of the floating pressing block driving the resistance body to bend.

[0040] 10, braided resistance detection device; 1, braided; 20 braided resistance; 21, hard paperboard; 22, adhesive paper; 23, resistance body; 24, pin; 100, braided conveying mechanism; 110, belt; 120, tensioning wheel; 130, transmission track; 131, bending auxiliary pad; 200, resistance value detection mechanism; 210, insulating pad; 220, conductive terminal; 230, probe; 231, telescopic part; 240, bracket; 300, visual detection mechanism; 310, distance adjusting frame; 320, camera; 330, ring-shaped light supplement lamp; 340, sliding table; 400, pin shearing mechanism; 410, cutter; 420, lower hopper; 430, upper shaping gate; 440, lower shaping gate; 450, lifting cylinder; 460, pressing strip; 500, discharging pipe; 600, sorting auxiliary assembly; 610, deviation prevention plate; 611, avoiding groove; 620, floating pressing block; 621, pressing head; 630, return spring; 640, downward pressing cylinder; DETAILED DESCRIPTION

[0041] For the purpose of promoting the understanding and appreciation of the present application, the application will be described in further detail below in conjunction with the attached drawings. Therein:

[0042] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and the like are merely used for the purpose of illustration and are not intended to be limiting.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0044] Referring to Figure 2 The present application provides a braided resistance detection device 10, which comprises a braided conveying mechanism 100, a resistance value detection mechanism 200, a visual detection mechanism 300, a pin shearing mechanism 400 and a discharging pipe 500.

[0045] Referring to Figure 2The braided belt conveying mechanism 100 comprises a belt 110, a tensioning wheel 120 and a transmission track 130 for carrying the braided belt, the belt 110 is used to push the braided belt to slide along the transmission track 130, the resistance value detection mechanism 200, the visual detection mechanism 300 and the pin shearing mechanism 400 are sequentially arranged along the sliding direction of the braided belt.

[0046] Please refer to Figure 2 and Figure 7 The pin shearing mechanism 400 comprises a cutter 410 and a discharge hopper 420, the cutter 410 faces the transmission track 130, when the braided belt type resistance 20 passes below the cutter 410, the cutter 410 contacts and cuts off the pin 24, so that the resistance body 23 is separated from the braided belt 1; the discharge hopper 420 is located below the cutter 410, the resistance body 23 cut off by the cutter 410 falls into the discharge hopper 420 under the action of gravity, while the braided belt 1 continues to advance along the transmission track 130 and is discharged.

[0047] The braided belt conveying mechanism 100 is used to carry the braided belt type resistance 20 to be detected, and sequentially convey the braided belt type resistance 20 to the resistance value detection mechanism 200, the visual detection mechanism 300 and the pin shearing mechanism 400, the resistance value detection mechanism 200 is used to test the resistance value of each resistance body 23 on the braided belt type resistance 20, the visual detection mechanism 300 is used to detect whether the appearance of the resistance body 23 and the product information engraved on the surface of the resistance body 23 are complete, and the pin shearing mechanism 400 is used to cut the pin 24, so that the resistance body 23 is separated from the braided belt 1.

[0048] Before the resistance is detached from the braided belt 1, at least the resistance value and the appearance integrity of the product need to be detected, that is, the braided belt type resistance 20 needs to be detected at least twice, in the present application, the braided belt type resistance 20 linearly translates on the transmission track 130 all the time, the process of moving the braided belt type resistance 20 from the resistance value detection mechanism 200 to the visual detection mechanism 300 and the subsequent work station does not need to be transferred by a mechanical hand, which can reduce the working hours of the braided belt type resistance 20 moving between the detection mechanisms, and is beneficial to improve the detection efficiency.

[0049] However, when the defective product on the braided resistance 20 is detected, the defective resistance needs to be taken out by a mechanical hand, specifically, the defective resistance body 23 is individually extracted from the braid 1 by applying force along the axis direction of the pin 24. It is known that the detection station for the resistance is multiple, and the braid 1 itself has multiple resistance bodies 23, and the mechanical hand is driven to remove the defective product on the braid 1, and the braided resistance 20 must be stopped sliding, that is, the sorting action needs to be performed every time the defective product is detected, and the equipment needs to be frequently started and stopped, the standby time is lengthened, and the detection efficiency is reduced; on the other hand, the process of removing the defective product by the mechanical hand will exert a pulling force on the braid 1, the braid 1 is composed of hard paper board 21 and adhesive paper 22, and the pin 24 is easily deformed when being extracted; the deformed braid 1 is easily stuck in the transmission track 130, causing equipment failure; even if the material sticking problem does not occur, the deformed braid 1 will cause the resistance bodies 23 thereon to be unable to keep in order, the positions of the resistance bodies 23 are deviated, and then the resistance value detection mechanism 200 and the visual detection mechanism 300 cannot be normally aligned with the resistance bodies 23, and misjudgment and error are easily occurred during detection. In order to solve the above problems, the following improvements are made in the present application:

[0050] Please refer to Figure 2 、 Figure 3 and Figure 4 , the resistance value detection mechanism 200 and the visual detection mechanism 300 are both provided with a sorting auxiliary assembly 600, the sorting auxiliary assembly 600 includes a deviation prevention plate 610, a floating pressing block 620, a reset spring 630 and a lower pressing cylinder 640;

[0051] Please refer to Figure 3 and Figure 4 , the deviation prevention plate 610 covers the transmission track 130, an opening is arranged on one side of the deviation prevention plate 610 close to the braid, the resistance body 23 on the braided resistance 20 extends from the opening and suspends outside the transmission track 130, and a avoiding groove 611 matching the belt 110 is arranged on the deviation prevention plate 610, the belt 110 passes through the avoiding groove 611 to keep in contact with the braid 1, and ensure that the belt 110 can drive the detected braided resistance 20 to move when running.

[0052] Please refer to Figure 3 and Figure 10 , the floating pressing block 620 is slidably arranged on the deviation prevention plate 610, one end of the floating pressing block 620 close to the opening is bent to form a pressing head 621 towards the position of the transmission track 130, that is, the cross section of the floating pressing block 620 is in the shape of “L”; the reset spring 630 is arranged between the floating pressing block 620 and the deviation prevention plate 610, and the reset spring 630 is used to drive the pressing head 621 away from the resistance body 23; the lower pressing cylinder 640 is used to drive the pressing head 621 to hold the pin 24, so that the pin 24 is bent to bend the resistance body 23, and the pressed resistance body 23 is deviated from the positions of other resistance bodies 23, as shown inFigure 10 It is emphasized that the floating block 620 only performs the bending operation on the defective resistor body 23, so as to separate the defective resistor from the qualified resistor, and to make the cutting knife 410 not contact the defective resistor, and to make the defective resistor stay in the ribbon 1, so as to be discharged together with the ribbon 1.

[0053] Referring to Figure 3 In an embodiment, the bending auxiliary pad 131 is arranged at a position covered by the anti-deviation plate 610 on the transmission track 130, and the bending auxiliary pad 131 is detachably connected with the transmission track 130. When the pressing head 621 holds the pin 24, the bending auxiliary pad 131 provides a limit, so that the pin 24 is bent along the edge of the bending auxiliary pad 131, thereby improving the bending precision. Moreover, the bending auxiliary pad 131 can be directly detached and replaced after being worn, thereby reducing the maintenance difficulty.

[0054] Referring to Figure 5 and Figure 6 In an embodiment, the pin shearing mechanism 400 further comprises an upper shaping gate 430, a lower shaping gate 440, and a lifting cylinder 450. The upper shaping gate 430 is movably arranged above the lower shaping gate 440. The upper shaping gate 430 and the lower shaping gate 440 are provided with a pressing strip 460 at a position where the upper shaping gate 430 and the lower shaping gate 440 contact the pin. When the lifting cylinder 450 is started, the upper shaping gate 430 approaches the lower shaping gate 440, and the pressing strips 460 on the two gates cooperate to press the part to be cut on the pin 24, so that the part is easily cut, thereby facilitating the cutting of the cutting knife 410.

[0055] Referring to Figure 6 and Figure 7 Further, there is a gap between the pressing strip 460 and the transmission track 130. After the ribbon 1 enters the pin shearing mechanism 400, the qualified resistor body 23 remains unchanged, while the defective resistor is bent. The bent resistor body 23 is located in the above-mentioned gap, that is, the pin 24 of the defective resistor is not pressed by the pressing strip 460, and the cutting knife 410 does not cut the defective resistor, as shown in Figure 7 so that the defective resistor continues to slide along the transmission track 130 together with the ribbon 1 and is discharged.

[0056] The application also provides a detection method based on the above-mentioned ribbon-type resistor detection device 10, comprising the following steps:

[0057] Step 1: Place the ribbon-type resistor 20 into the ribbon conveying mechanism 100, so that the ribbon 1 is located in the transmission track 130, and the resistor body 23 is suspended outside the transmission track 130;

[0058] The various resistance bodies 23 on the to-be-tested braided resistance 20 are in flush state, the braided resistance 1 is located in the transmission track 130 during transportation, the belt 110 is in contact with the braided resistance 1, and the belt 110 drags the braided resistance 1 through friction force to make it slide along the transmission track 130.

[0059] Step 2: The belt 110 drives the braided resistance 20 to slide along the transmission track 130, when the braided resistance 20 passes through the resistance value detection mechanism 200, the pins 24 on the resistance bodies 23 are in contact with the resistance value detection mechanism 200, and the resistance values of the various resistance bodies 23 on the braided resistance are detected through the resistance value detection mechanism 200;

[0060] The target resistance value corresponding to the to-be-tested product is written before testing, if the actual resistance value measured by the resistance value detection mechanism 200 is the same as the target resistance value, the tested resistance body 23 is qualified, otherwise the tested resistance body 23 is unqualified.

[0061] Step 3: If the resistance value is qualified, the belt 110 keeps running to drive the braided resistance to continue sliding; if the resistance value is unqualified, the belt 110 is stopped, the floating pressing block 620 is driven to descend by the downward pressing cylinder 640, the pressing head 621 is in contact with the pins 24 of the resistance body 23 with unqualified resistance value, the resistance body 23 is suspended by the pressing head 621, and the belt 110 is restarted after the part outside the transmission track 130 is bent.

[0062] The resistance body 23 with unqualified resistance value is defective product, when the defective product is identified, it is bent by the pressing head 621 to separate the defective product from the qualified product.

[0063] Step 4: The picture of the braided resistance is taken by the visual detection mechanism 300; if the appearance of the resistance body has defects, the belt 110 is stopped, the floating pressing block 620 is driven to descend by the downward pressing cylinder 640, the pressing head 621 is in contact with the pins of the resistance body with unqualified resistance value, the resistance body is suspended by the pressing head 621, and the belt 110 is restarted after the part outside the transmission track 130 is bent.

[0064] The appearance image of the qualified product resistance body 23 is input before testing, including the appearance and product information, production date and the like engraved on the surface thereof, the picture of the braided resistance is taken by the visual detection mechanism 300 and compared with the input image, the resistance body 23 is identified as defective product when it is deformed and the product information engraved on the surface thereof is incomplete. The resistance body 23 with unqualified appearance is also defective product, which is bent by the pressing head 621 to separate the defective product from the qualified product.

[0065] Step 5: When the belt 110 drives the braided resistance through the pin shearing mechanism 400, the cutter 410 contacts the pin 24 on the unbent resistance body 23, so that the resistance body 23 is separated from the braid 1, and the resistance body 23 enters the discharge pipe 500 through the discharge hopper 420 to complete the discharging; the bent resistance body avoids the cutter 410 and is discharged from the end of the transmission track 130 with the braid.

[0066] As shown in Figure 8 , the bent resistance body 23 is bent by 90°, when the braid 1 enters the pin shearing mechanism 400, the cutter 410 cannot reach the pin 24 of the defective product, so that the defective product remains connected with the braid 1 and continues to slide along the transmission track 130 and is discharged; while the qualified product is cut off by the cutter 410 and discharged from the discharge pipe 500.

[0067] Please refer to Figure 4 , in an embodiment, the visual detection mechanism 300 includes a distance adjusting frame 310, a camera 320 and a ring-shaped light supplement lamp 330 arranged on the distance adjusting frame 310, and a sliding table 340 arranged on the positions of the camera 320 and the ring-shaped light supplement lamp 330 connected with the distance adjusting frame 310. The camera 320 and the ring-shaped light supplement lamp 330 are provided with two, and the two cameras 320 respectively shoot the front and back of the resistance body. The positions of the ring-shaped light supplement lamp 330 and the camera 320 can be adjusted by the distance adjusting frame 310, so that they can be changed according to the size of the braided resistance and adapt to different specifications of the braided resistance 20.

[0068] Please refer to Figure 3 and Figure 9 , in an embodiment, the resistance value detection mechanism 200 includes an insulating pad 210, a conductive terminal 220, a probe 230 and a support 240, the support 240 is arranged on the transmission track 130, the probe 230 is arranged on the support 240, the probe is provided with two, and a space is arranged between the two probes 230, an elastic part 231 is arranged on one end of the probe 230 facing the braid, the elastic part 231 has elasticity, and the elastic part 231 contracts under stress, and expands again after the external force is removed.

[0069] Please refer to Figure 3 and Figure 9, the insulating pad 210 wraps the telescopic part 231, the conductive terminal 220 is embedded in the insulating pad 210, and the conductive terminal 220 is attached to the telescopic part 231, the end of the conductive terminal 220 extends into the transmission rail 130 and contacts the pin 24, so that the probe 230 is in conduction with the resistance body 23. When the belt resistor 20 passes through the transmission rail 130, because the insulating pad 210 is arranged on the telescopic part 231, the telescopic part 231 is retracted when the belt 1 contacts the insulating pad 210, the insulating pad 210 leaves space for the belt 1 to pass through, and because the pin 24 on the belt resistor 20 is in an exposed state, the conductive terminal 220 will contact the pin 24 when the belt 1 passes through the insulating pad 210, so that the probe 230 is in conduction with the resistance body 23 for resistance value detection.

[0070] It should be noted that the pins 24 of each resistance body 23 will contact the conductive terminal 220 during the process of the belt 1 passing through from below the insulating pad 210, when the two pins 24 on the same resistance body 23 are contacted, the probe 230 is in conduction with the resistance body 23, and the resistance value of the resistance can be measured; otherwise, if the two pins 24 on different resistance bodies 23 are contacted at this time, because there is no electrical connection between each resistance body 23 on the belt 1, the adjacent resistance bodies 23 are in an insulating state, and the measured resistance value will exceed the instrument range, so that the situation that the probe 230 contacts the adjacent two resistance bodies 23 can be excluded. The process of resistance value measurement does not require additional lifting drive components to drive the probe 230 to contact the pin 24, and only needs to reduce the speed of the belt 110, so that the pin 24 contacts the conductive terminal 220 during the test process, without stopping the sliding of the belt 1, which is conducive to improving the detection efficiency.

[0071] The belt resistor detection device 10 and the detection method thereof have the following beneficial effects:

[0072] 1. The sorting auxiliary assembly 600 is arranged at each detection position, and the defective product to be detected is bent to separate the defective product from other resistance bodies 23, so that the bent defective product can be skipped during subsequent detection, the detection time is saved, and the detection efficiency of the belt resistor is improved.

[0073] 2. A separate sorting manipulator is not required at each detection station to pull out the defective product, which saves the time of pulling out the defective product, improves the detection efficiency, avoids the damage and deformation of the belt 1 during the process of pulling out the defective product, and avoids the problems of material jamming caused by the deformation of the belt 1 and the inaccuracy of detection caused by the position deviation of the remaining resistance bodies 23 due to the deformation of the belt 1.

[0074] 3. Since the defective product is bent, the cutter 410 only contacts the qualified product resistance main body 23 when cutting, so that the qualified product is cut and discharged, while the defective product remains on the braiding 1 and is discharged together with the braiding 1, avoiding the mixing of the defective product with the qualified product resistance and ensuring the sorting precision.

[0075] The above-described embodiments only express several embodiments of the present application, which are described in a more specific and detailed manner, but should not be understood as a limitation on the scope of the patent. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A device for detecting defective resistors on a resistor tape and separating the resistor tape from the body of the good resistors, the device comprising: a first conveyor for conveying the resistor tape; a second conveyor for conveying the body of the good resistors; a first sensor for detecting the defective resistors on the resistor tape; and a second sensor for detecting the body of the good resistors. The application relates to a resistance value detecting and cutting device for a resistance belt, which comprises a belt conveying mechanism, a resistance value detecting mechanism, a visual detecting mechanism, a pin shearing mechanism and a discharging pipe. The belt conveying mechanism comprises a belt, a tensioning wheel and a transmission track, the transmission track is used for bearing the resistance belt, the belt is used for pushing the resistance belt to slide along the transmission track, and the resistance value detecting mechanism, the visual detecting mechanism and the pin shearing mechanism are sequentially arranged along the sliding direction of the resistance belt. The pin shearing mechanism comprises a cutter and a discharging hopper, the cutter faces the transmission track, the cutter is used for separating the resistance body from the resistance belt, the discharging hopper is arranged below the cutter, and the discharging hopper is used for guiding the resistance body into the discharging pipe. The resistance value detecting mechanism and the visual detecting mechanism are both provided with a sorting auxiliary assembly, the sorting auxiliary assembly comprises a deviation preventing plate, a floating pressing block, a reset spring and a downward pressing cylinder, the deviation preventing plate covers the transmission track, one side of the deviation preventing plate close to the resistance belt is provided with an opening, and a avoiding groove matched with the belt is formed in the deviation preventing plate; the floating pressing block is slidably arranged on the deviation preventing plate, one end of the floating pressing block close to the opening is bent to form a pressing head facing the position of the transmission track, the reset spring is arranged between the floating pressing block and the deviation preventing plate, and the reset spring is used for driving the pressing head to move away from the resistance body; and the downward pressing cylinder is used for driving the pressing head to press the pin of the resistance body so as to bend the pin. If the resistance value is unqualified, the belt is driven to stop running, the downward pressing cylinder drives the floating pressing block to descend, the pressing head contacts the pin of the resistance body with unqualified resistance value, and the resistance body is suspended on the part of the belt outside the transmission track and is bent, and then the belt is restarted. When the resistance belt passes through the pin shearing mechanism, the cutter contacts the pin of the resistance body which is not bent, so that the resistance body is separated from the resistance belt, the resistance body enters the discharging pipe through the discharging hopper, the bent resistance body avoids the cutter, and the resistance body is discharged from the end of the transmission track together with the resistance belt. The resistance value detecting mechanism comprises an insulating pad, a conductive terminal, a probe and a support, the support is arranged on the transmission track, the probe is arranged on the support, one end of the probe facing the resistance belt is provided with an extension part, the insulating pad wraps the extension part, the conductive terminal is embedded in the insulating pad, and the conductive terminal is attached to the extension part, and the end of the conductive terminal extends into the transmission track and contacts the pin of the resistance body, so that the probe and the resistance body are in conduction.

2. The flat cable resistance detection device according to claim 1, characterized by The probe is provided with two, and a spacing is arranged between the two probes.

3. The flat cable resistance detection device according to claim 2, characterized by The position of the transmission track covered by the deviation preventing plate is provided with a bending auxiliary pad, and the bending auxiliary pad is detachably connected with the transmission track.

4. The flat cable resistance detection device according to claim 1, wherein ​ 5. The flat cable resistance detection device according to claim 1, wherein The pin shearing mechanism further comprises an upper shaping gate, a lower shaping gate and a lifting cylinder, the upper shaping gate is movably arranged above the lower shaping gate, the lifting cylinder is used to drive the upper shaping gate to approach the lower shaping gate, so that the upper shaping gate and the lower shaping gate jointly press the pins of the resistance body; and the upper shaping gate and the lower shaping gate are provided with a pressing strip at the position where the upper shaping gate and the lower shaping gate contact the pins.

6. The flat cable resistance detection device according to claim 5, wherein The pressing strip and the transmission track are spaced apart.

7. The flat cable resistance detection device according to claim 1, wherein The visual detection mechanism comprises a distance adjusting frame, a camera and a ring-shaped light supplementing lamp arranged on the distance adjusting frame, and the camera and the ring-shaped light supplementing lamp are both provided with a sliding table at the position where the camera and the ring-shaped light supplementing lamp are connected with the distance adjusting frame.

8. The flat cable resistance detection device according to claim 7, wherein The camera and the ring-shaped light supplementing lamp are provided with two, and the two cameras respectively shoot the front surface and the back surface of the resistance body.

9. A detection method based on the braid resistance detection device according to any one of claims 1 to 8, characterized by, The method comprises the following steps: Step 1: the braided resistance is placed in the braided conveying mechanism, so that the braided resistance is located in the transmission track, and the resistance body is suspended outside the transmission track; Step 2: the belt drives the braided resistance to slide along the transmission track, when the braided resistance passes through the resistance value detection mechanism, the pins on the resistance body contact the resistance value detection mechanism, and the resistance value of each resistance body on the braided resistance is detected by the resistance value detection mechanism; Step 3: if the resistance value is qualified, the belt keeps running to drive the braided resistance to continue sliding; if the resistance value is unqualified, the belt is driven to stop running, the floating pressing block is driven to descend by the pressing-down cylinder, the pressing head contacts the pins of the resistance body with unqualified resistance value, the part of the resistance body suspended outside the transmission track is bent, and then the belt is restarted; Step 4: the visual detection mechanism shoots the picture of the braided resistance; if the resistance body has defects, the belt is driven to stop running, the floating pressing block is driven to descend by the pressing-down cylinder, the pressing head contacts the pins of the resistance body with unqualified resistance value, the part of the resistance body suspended outside the transmission track is bent, and then the belt is restarted; Step 5: when the belt drives the braided resistance to pass through the pin shearing mechanism, the cutter contacts the pins on the resistance body which is not bent, so that the resistance body is separated from the braided resistance, the resistance body enters the discharging pipe through the discharging hopper to complete discharging; the bent resistance body avoids the cutter, and is discharged from the end of the transmission track together with the braided resistance.

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