CN114084573A - Lifting roller way conveying device - Google Patents

Lifting roller way conveying device Download PDF

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Publication number
CN114084573A
CN114084573A CN202111196798.8A CN202111196798A CN114084573A CN 114084573 A CN114084573 A CN 114084573A CN 202111196798 A CN202111196798 A CN 202111196798A CN 114084573 A CN114084573 A CN 114084573A
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CN
China
Prior art keywords
tray
sensor
lifting
workpiece
identification
Prior art date
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Pending
Application number
CN202111196798.8A
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Chinese (zh)
Inventor
曾超峰
刘志峰
张鹏飞
黎镇源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Original Point Intelligent Technology Co Ltd
Original Assignee
Guangdong Original Point Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Original Point Intelligent Technology Co Ltd filed Critical Guangdong Original Point Intelligent Technology Co Ltd
Priority to CN202111196798.8A priority Critical patent/CN114084573A/en
Publication of CN114084573A publication Critical patent/CN114084573A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G13/00—Roller-ways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G13/00—Roller-ways
    • B65G13/11—Roller frames
    • B65G13/12—Roller frames adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0235—Containers
    • B65G2201/0258—Trays, totes or bins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02—Control or detection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04—Detection means
    • B65G2203/042—Sensors

Abstract

The invention discloses a lifting roller way conveying device, which comprises a lifting frame, a lifting mechanism for lifting the lifting frame, and a roller way conveying mechanism arranged on the lifting frame; the roller way conveying mechanism is used for conveying the tray; and each tray is provided with an identification module arranged on a preset position, and the roller conveying mechanism is provided with a first induction group and a second induction group. The lifting roller way conveying device provided by the invention can intelligently judge whether the tray is matched with the workpiece or not, timely correct matching errors and avoid the occurrence of wrong matching between the workpiece and a vehicle model during loading, and can provide classification basis for a discharging roller way conveying line according to a tray recognition result or a workpiece recognition result, so that the automation degree is high.

Description

Lifting roller way conveying device
The application is a divisional application of a patent application with the patent application number of 202010460372.8, the application date of "27/05/2020", entitled "a lifting roller way conveying device and a pairing determination method based on the device
Technical Field
The invention relates to the technical field of automobile crankshaft quality inspection equipment, in particular to a lifting roller way conveying device.
Background
The automobile crankshaft is an important part of an automobile engine, the automobile crankshaft finished product which is just produced cannot be directly loaded because the quality inspection is not carried out on the automobile crankshaft finished product, the automobile crankshaft finished product needs to be subjected to appearance quality inspection through a quality inspection line, and the automobile crankshaft finished product is sent to a loading position by the transport trolley after being judged to be qualified.
The quality inspection line mainly comprises a feeding roller way conveying line, a quality inspection platform and a discharging roller way conveying line. The feeding roller way conveying line conveys the trays loaded with the finished automobile crankshaft products to a quality inspection platform for quality inspection, after the finished automobile crankshaft products are judged to be qualified, the trays loaded with the qualified products are conveyed to the discharging roller way conveying line for caching, and finally conveyed to a loading position by the conveying trolley, and the empty trays generated after loading are conveyed back to the quality inspection line by the conveying trolley.
In order to enable the quality inspection line to realize the hybrid detection of two types or more than two types of automobile crankshafts, the quality inspection line needs to be modified towards the direction of intelligent production. One type of automotive crankshaft is correspondingly transported by a pallet. After the automobile crankshafts of different types are qualified, the tray and the automobile crankshafts need to be subjected to information identification (such as type identification and identification whether the tray is placed in a correct posture), and the control system analyzes the information, so that a quality inspector can find the problems of wrong model matching of the tray and the automobile crankshafts or wrong tray placing postures in time; if the judgment is passed, the control system conveys the trays with qualified products to a discharging roller way conveying line for classification and caching according to the type information of the automobile crankshaft. In addition, two-layer about the unloading roll table transfer chain including, every layer all sets up roller table conveying mechanism, and the upper strata is used for classifying the buffer memory to the certified products, and the lower floor is used for classifying the buffer memory to empty tray, and the working face of quality control platform then is less than the upper height of unloading roll table transfer chain, and the tray that carries the certified products need be carried to the upper strata of unloading roll table transfer chain through the action of lifting. Therefore, based on the production requirements, a lifting roller way conveying device capable of connecting a quality inspection platform and a blanking roller way conveying line needs to be researched and developed urgently.
It is seen that improvements and enhancements to the prior art are needed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a lifting roller conveyor with lifting function and workpiece and pallet pairing determination function, so as to solve at least one of the above-mentioned technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a lifting roller way conveying device comprises a lifting frame, a lifting mechanism for lifting the lifting frame, and a roller way conveying mechanism arranged on the lifting frame; the roller way conveying mechanism is used for conveying the tray; the tray type induction device is characterized in that identification modules arranged on preset positions are arranged on each tray, a first induction group and a second induction group are arranged on the roller conveying mechanism, the first induction group is used for identifying the arrangement positions of the identification modules on the trays, and the second induction group is used for identifying the types of workpieces.
The tray comprises a first tray and a second tray, the first tray is provided with a first identification module and a first bearing seat, and the second tray is provided with a second identification module and a second bearing seat; the first bearing seat is used for bearing a first workpiece, and the second bearing seat is used for bearing a second workpiece; the first induction group comprises a first inductor, a second inductor and a third inductor.
The tray is provided with 4 corners, and the positions of the 4 corners are respectively set as a left front part, a right front part, a left rear part and a right rear part; the first sensor is used for detecting whether an identification module is arranged on the right rear part of the tray or not; the second sensor is used for detecting whether the identification module is arranged on the left rear part of the tray or not; the third sensor is used for detecting whether an identification module is arranged on any part of the left front part and the right front part.
The first recognition module is recognition convex blocks arranged on the left rear part and the right rear part of the first tray, and the second recognition module is recognition convex blocks arranged on the right front part and the right rear part of the second tray.
The second induction group comprises a fourth inductor and a fifth inductor, a first distinguishing feature different from the second workpiece is arranged on the first workpiece, and a second distinguishing feature different from the first workpiece is arranged on the second workpiece; the fourth sensor is used for sensing whether the workpiece has a first distinguishing characteristic or not; the fifth sensor is used for sensing whether the workpiece has a second distinguishing characteristic.
The lifting mechanism comprises an underframe and a vertical upward-arranged first cylinder, the cylinder body of the first cylinder is fixedly connected with the underframe, and the end part of a piston rod of the first cylinder is connected with the lifting frame through a connecting plate.
The roller way conveying mechanism comprises two mounting seats, a plurality of guide rollers arranged between the two mounting seats, a driving motor and a transmission mechanism; drive mechanism is including setting up the torque limiter on the driving motor output, be equipped with friction sprocket on the torque limiter, every the tip of deflector roll is equipped with drive sprocket and driven sprocket, friction sprocket is connected through the drive sprocket transmission on first chain and one of them deflector roll, driven sprocket on the deflector roll passes through the second chain transmission and connects.
The lifting roller way conveying device further comprises a first lifting thrust mechanism used for preventing the tray from retreating and a second lifting thrust mechanism used for preventing the tray from being conveyed forwards, a detection station is formed between the first lifting thrust mechanism and the second lifting thrust mechanism, and the first lifting thrust mechanism and the second lifting thrust mechanism respectively comprise a support plate arranged on the lifting frame, a second cylinder vertically arranged on the support plate upwards, a connecting block arranged at the end part of a piston rod of the second cylinder, and thrust devices respectively arranged at two ends of the connecting block.
A pair determination method based on a lifting roller way conveying device is characterized in that a first induction group and a second induction group are electrically connected with a control module, a tray is conveyed to a detection station, a recognition module on the tray enables part of sensors in the first induction group to sense, a workpiece on the tray enables part of sensors in the second induction group to sense, each sensor feeds back a sensing signal to the control module, and the control module generates a tray recognition result and a workpiece recognition result through analysis; the control module performs pairing judgment on the tray identification result and the workpiece identification result
If the tray is the first tray with correct placing posture in the tray recognition result, and the workpiece is the first workpiece in the workpiece recognition result, the tray and the workpiece are correctly matched; if the tray is the second tray with the correct placing posture in the tray recognition result, and the workpiece is the second workpiece in the workpiece recognition result, the tray and the workpiece are correctly matched; if the tray is the first tray with correct placing posture in the tray recognition result, and the workpiece is the second workpiece in the workpiece recognition result, the tray and the workpiece are not correctly matched; if the tray is the second tray with correct placing posture in the tray recognition result, and the workpiece is the first workpiece in the workpiece recognition result, the tray and the workpiece are not correctly matched; and if the tray is the tray with the reversed placing posture in the tray recognition result, the tray and the workpiece are not correctly matched.
Specifically, if the first inductor and the second inductor in the first induction group can sense and identify the bump, and the third inductor cannot sense and identify the bump, the control module judges that the tray on the detection station is the first tray with a correct placing posture;
if the third sensor in the first sensing group can sense and identify the bump, and the first sensor and the second sensor cannot sense and identify the bump, the control module judges that the tray on the detection station is the first tray with the reversed placing posture;
if the first inductor and the third inductor in the first induction group can sense and identify the bump, and the second inductor cannot sense and identify the bump, the control module judges that the tray on the detection station is the second tray with correct placing posture;
if the second inductor and the third inductor in the first induction group can induce and identify the convex block, and the first inductor can not induce and identify the convex block, the control module judges that the tray on the detection station is a second tray with a reversed placing posture;
if the fourth sensor in the second sensing group can sense the first distinguishing characteristic and the fifth sensor can not sense the second distinguishing characteristic, the control module judges that the workpiece on the detection station is the first workpiece;
if the fifth sensor in the second sensing group can sense the second distinguishing characteristic and the fourth sensor can not sense the first distinguishing characteristic, the control module judges that the workpiece on the detection station is the second workpiece.
Has the advantages that:
the invention provides a lifting roller way conveying device which respectively identifies a tray and a workpiece through a first induction group and a second induction group, on one hand, whether the tray is matched with the workpiece is intelligently judged, matching errors are timely corrected, the situation that the workpiece is matched with a vehicle model incorrectly during loading is avoided, on the other hand, a tray identification result or a workpiece identification result also provides a classification basis for a blanking roller way conveying line, and the automation degree is high. In addition, lifting mechanism is arranged on the lifting roller way conveying device, so that the upper layers of the quality inspection platform and the blanking roller way conveying line are connected in height, and the flexibility is high.
Drawings
Fig. 1 is a perspective view of the lifting roller way conveying device provided by the invention.
Fig. 2 is a partially enlarged view of the region L in fig. 1.
Fig. 3 is a perspective view of a tray in the lifting roller way conveying device provided by the invention.
Fig. 4 is a top view of a first pallet and a first workpiece in the lifting roller conveyor provided by the invention.
Fig. 5 is a top view of a second pallet and a second workpiece in the lifting roller conveyor provided by the invention.
Fig. 6 is a top view of the lifting roller conveyor according to the present invention, in which the first tray is placed in a correct posture.
Fig. 7 is a top view of the first tray placed in a reverse direction in the lifting roller conveyor provided by the present invention.
Fig. 8 is a top view of the lifting roller conveyor according to the present invention, in which the second tray is placed in a correct posture.
Fig. 9 is a top view of the second tray placed in a reverse direction in the lifting roller conveyor provided in the present invention.
Fig. 10 is a front view of the lifting frame in the lifting roller way conveying device provided by the invention in a lifting state.
Fig. 11 is a front view of the lifting frame in the lifting roller way conveying device provided by the invention in a descending state.
Fig. 12 is a schematic transmission diagram of a driving motor and a guide roller in the lifting roller way conveying device provided by the invention.
Detailed Description
The invention provides a lifting roller way conveying device, which is further described in detail below by referring to the attached drawings and embodiments in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
Referring to fig. 1 to 12, the present invention provides a lifting roller way conveying device, in which the direction of the tray conveyed by the roller way conveying mechanism is set as "front", and the directions of "front" and "back" are opposite. The dotted line in the figure indicates the detection light emitted by the sensor and cannot be directly observed.
The lifting roller way conveying device comprises a lifting frame 1, a lifting mechanism 2 used for lifting the lifting frame 1, and a roller way conveying mechanism 3 arranged on the lifting frame 1; the roller way conveying mechanism 3 is used for conveying the tray; the tray type induction system is characterized in that identification modules arranged on preset positions are arranged on each tray, a first induction group 4 and a second induction group 5 are arranged on the roller conveying mechanism 3, the first induction group 4 is used for identifying the arrangement positions of the identification modules on the trays, and the second induction group 5 is used for identifying the types of workpieces. Here, be provided with control module in the quality control line, first response group 4 and second response group 5 all are connected with control module electrical property, control module is preferably the PLC controller.
The working process of the finished automobile crankshaft after quality inspection is briefly described as follows: automobile crankshaft finished product can be replaced on the tray as qualified piece after quality inspection is qualified, lifting frame 1 and roller conveyor 3 descend with the drive of lifting mechanism 2, make the bearing surface of roller conveyor 3 and the highly uniform of the bearing surface of quality inspection platform, the quality inspector will carry the tray propelling movement of qualified piece to roller conveyor 3's detection station (the inductor can normally carry out the position that detects to tray and work piece promptly), identification module can make the partial inductor of first response group 4 produce the sensing signal, another partial inductor then can not produce the sensing signal, control module can acquire the sensing signal of first response group 4 this moment, control module 5 obtains tray discernment result after the analysis. If N kinds of trays are provided, N kinds of detection results can correspondingly appear due to different setting positions of the identification modules on each kind of trays, and the N kinds of detection results are different; in addition, the tray may be placed correctly or placed reversely, so that the total of 2N detection results may appear by adding reversed detection results, and the 2N detection results are different from each other. Therefore, since each tray identification result is unique, the control module can not only determine the type of the tray according to the tray identification result, but also detect whether the tray is set upside down.
Similarly, the workpiece may enable a part of the sensors of the second sensing group 5 to generate sensing signals, and the other part of the sensors cannot generate sensing signals, at this time, the control module may obtain the sensing signals of the second sensing group 5; the control module obtains a workpiece detection result after analysis, and the type of the workpiece can be obtained from the workpiece detection result. Since each type of workpiece is placed on a tray dedicated to carrying that type of workpiece, if N types are provided for the tray, N types of workpieces are provided correspondingly. It should be noted that if no sensing signal is generated by all the sensors in the second sensing set 5, it represents that no workpiece is placed on the tray.
The control module continuously judges whether the tray and the workpiece are correctly matched, and compares a tray identification result with a workpiece detection result: (1) if the placing posture of the tray is correct and the tray is matched with the type of the workpiece, the tray and the workpiece are considered to be correctly matched; (2) if the tray is placed in a correct posture, but the types of the tray and the workpiece are not matched, the tray and the workpiece are considered to be incorrectly matched; (3) if the tray is placed in a reversed posture, the tray and the workpiece are not correctly matched no matter whether the type of the tray is matched with that of the workpiece or not. When the tray and the workpiece are not correctly matched, the quality inspector pulls the tray with the qualified products back to the quality inspection platform, and puts the tray in a correct posture or replaces the tray correctly matched with the model of the workpiece according to the comparison result. When the tray and the workpiece are correctly matched, the lifting mechanism 2 drives the lifting frame 1 and the roller way conveying mechanism 3 to ascend, so that the height of the bearing surface of the roller way conveying mechanism 3 is consistent with that of the bearing surface on the upper layer of the blanking roller way conveying line, then the roller way conveying mechanism 3 conveys the tray with qualified products to the blanking roller way conveying line, and finally the control module can perform classification caching according to the tray identification result or the workpiece identification result.
Unqualified work piece overhauls and to become qualified after accomplishing, and these qualified can place on the tray, then carry out according to carrying out with above-mentioned workflow, carry out the discernment contrast on the tray that will load qualified carries the on the roll table conveyor, if tray and work piece pair correctly, control module control roll table conveyor will load qualified product's tray and carry out classification cache on the unloading roll table transfer line.
Therefore, the lifting roller way conveying device provided by the invention can respectively identify the tray and the workpiece through the first induction group 4 and the second induction group 5, on one hand, whether the tray and the workpiece are matched is intelligently judged, the matching error is timely corrected, the condition that the workpiece is matched with a vehicle model in error during loading is avoided, on the other hand, the tray identification result or the workpiece identification result also provides a classification basis for a blanking roller way conveying line, and the automation degree is high. In addition, lifting roller way conveying device is through setting up lifting mechanism 2 for the upper strata of quality testing platform and unloading roller way transfer chain links up in the height, and the flexibility is high.
In the embodiment, as shown in fig. 4 and 5, the lifting roller conveyor provided by the invention is designed for conveying two types of workpieces, such as a crankshaft of a 2.0L engine and a crankshaft of a 2.5L engine, the trays include a first tray 61 and a second tray 71, the first tray 61 is provided with a first identification module 62 and a first bearing seat 63, and the second tray 71 is provided with a second identification module 72 and a second bearing seat 73; the first bearing seat is used for bearing a first workpiece 64, and the second bearing seat is used for bearing a second workpiece 74; the first sensing set 4 includes a first sensor 41, a second sensor 42, and a third sensor 43. For ease of illustration, the crankshaft of the 2.0L engine is carried by the first tray 61 and the crankshaft of the 2.5L engine is carried by the second tray 71.
Specifically, as shown in fig. 3, the tray has 4 corners, and the positions of the 4 corners are respectively set as a left front portion 8.1, a right front portion 8.2, a left rear portion 8.3 and a right rear portion 8.4; the first sensor 41 is used for detecting whether an identification module is arranged on the right rear part 8.4 of the tray; the second sensor 42 is used for detecting whether the left rear part 8.3 of the tray is provided with an identification module; the third sensor 43 is used to detect whether an identification module is disposed on any one of the left front portion 8.1 and the right front portion 8.2. Through the arrangement, the structure of the tray is reasonable and compact, and the interference between the identification module and the crankshaft is avoided; and the detection mode is simple and reasonable, the sensor consumption is less, and the manufacturing cost is saved.
In a preferred embodiment, the first sensor 41, the second sensor 42, and the third sensor 43 are all correlation photoelectric sensors, each correlation photoelectric sensor includes a transmitter and a receiver, and the detection light emitted by the third sensor 43 is parallel to the extending direction of the guide roller, so that the detection result is more accurate and interference of other components is prevented, the detection light emitted by the first sensor 41 and the second sensor 42 is arranged crosswise, but the detection light does not intersect. Through setting up like this, the work of each group inductor is mutually noninterfere, and each inductor passes through first sensor support setting at the top of mount pad, and overall structure is compact relatively.
To better illustrate the detection logic, the following lists specific embodiments of 4 on-tray identification modules:
scheme 1: the first identification module 62 is an identification bump provided on the left rear portion 8.3 and the right rear portion 8.4 of the first tray 61, and the second identification module 72 is an identification bump provided on the right rear portion 8.4 and the right front portion 8.2 of the second tray 71. The tray can obtain the following 4 detection results after being detected by the sensor: (1) the first tray 61 is correctly placed: the first sensor 41 and the second sensor 42 can sense the identification bump (i.e. the first sensor 41 and the second sensor 42 have sensing signals output to the control module), and the third sensor 43 cannot sense the identification bump (i.e. the third sensor 43 has no sensing signals output to the control module), as shown in fig. 6; (2) the first tray 61 is placed in a reversed posture: the third sensor 43 can sense the identification bump, and the first sensor 41 and the second sensor 42 cannot sense the identification bump, as shown in fig. 7; (3) the second tray 71 is placed in a correct posture: the first sensor 41 and the third sensor 43 can sense the identification bump, and the second sensor 42 cannot sense the identification bump, as shown in fig. 8; (4) the second tray 71 is placed in a reversed posture: the second sensor 42 and the third sensor 43 can sense the identification bump, and the first sensor 41 cannot sense the identification bump, as shown in fig. 9.
Scheme 2: the first identification module 62 is an identification bump provided on the left front portion 8.1 and the right front portion 8.2 of the first tray 614, and the second identification module 72 is an identification bump provided on the right rear portion 8.4 and the right front portion 8.2 of the second tray 71. The tray can obtain the following 4 detection results after being detected by the sensor: (1) the first tray 61 is correctly placed: the third sensor 43 can sense the identification bump (i.e. the third sensor 43 has a sensing signal output to the control module), and the first sensor 41 and the second sensor 42 cannot sense the identification bump (i.e. the first sensor 41 and the second sensor 42 have no sensing signal output to the control module); (2) the first tray 61 is placed in a reversed posture: the first sensor 41 and the second sensor 42 can sense the identification bump, and the third sensor 43 cannot sense the identification bump; (3) the second tray 71 is placed in a correct posture: the first sensor 41 and the third sensor 43 can sense the identification bump, and the second sensor 42 cannot sense the identification bump; (4) the second tray 71 is placed in a reversed posture: the second sensor 42 and the third sensor 43 can sense the identification bump, and the first sensor 41 cannot sense the identification bump.
Scheme 3: the first identification module 62 is an identification projection provided on the left rear portion 8.3 and the right rear portion 8.4 of the first tray 61, and the second identification module 72 is an identification projection provided on the left rear portion 8.3 and the left front portion 8.1 of the second tray 71. The tray can obtain the following 4 detection results after being detected by the sensor: (1) the first tray 61 is correctly placed: the first sensor 41 and the second sensor 42 can sense the identification bump (i.e. the first sensor 41 and the second sensor 42 have sensing signals output to the control module), and the third sensor 43 cannot sense the identification bump (i.e. the third sensor 43 has no sensing signals output to the control module); (2) the first tray 61 is placed in a reversed posture: the third sensor 43 can sense the identification bump, and the first sensor 41 and the second sensor 42 cannot sense the identification bump; (3) the second tray 71 is placed in a reversed posture: the second sensor 42 and the third sensor 43 can sense the identification bump, and the first sensor 41 cannot sense the identification bump; (4) the second tray 71 is placed in a correct posture: the first sensor 41 and the third sensor 43 can sense the identification protrusion, and the second sensor 42 cannot sense the identification protrusion.
Scheme 4: the first identification module 62 is an identification projection provided on the left front portion 8.1 and the right front portion 8.2 of the first tray 61, and the second identification module 72 is an identification projection provided on the left rear portion 8.3 and the left front portion 8.1 of the second tray 71. The tray can obtain the following 4 detection results after being detected by the sensor: (1) the first tray 61 is correctly placed: the third sensor 43 can sense the identification bump (i.e. the third sensor 43 has a sensing signal output to the control module), and the first sensor 41 and the second sensor 42 cannot sense the identification bump (i.e. the first sensor 41 and the second sensor 42 have no sensing signal output to the control module); (2) the first tray 61 is placed in a reversed posture: the first sensor 41 and the second sensor 42 can sense the identification bump, and the third sensor 43 cannot sense the identification bump; (3) the second tray 71 is placed in a reversed posture: the second sensor 42 and the third sensor 43 can sense the identification bump, and the first sensor 41 cannot sense the identification bump; (4) the second tray 71 is placed in a correct posture: the first sensor 41 and the third sensor 43 can sense the identification protrusion, and the second sensor 42 cannot sense the identification protrusion.
Specifically, as shown in fig. 4 and 5, the second sensing group 5 includes a fourth sensor 51 and a fifth sensor 52, a first distinguishing feature 65 different from a second workpiece 74 is disposed on the first workpiece 64, and a second distinguishing feature 75 different from the first workpiece 64 is disposed on the second workpiece 74; in a specific embodiment: the first workpiece 64 is a crankshaft of a 2.0L engine, the second workpiece 74 is a crankshaft of a 2.5L engine, and the first distinguishing feature 65 is that the lengths of the two crankshafts are not equal, the length of the crankshaft of the 2.0L engine is shorter than that of the crankshaft of the 2.5L engine, and the crank setting positions of the two crankshafts are different in the axial direction; the second distinguishing feature 75 is the presence of a toothed disc on the 2.5L engine crankshaft, whereas the 2.0L engine crankshaft is not provided with a toothed disc. The fourth sensor 51 is used for sensing whether the workpiece has the first distinguishing characteristic 65; the fifth sensor 52 is used to sense whether the workpiece has the second distinguishing characteristic 75. It can be understood that if the workpiece is a crankshaft of a 2.0L engine, the fourth sensor 43 can sense the crank on the crankshaft of the 2.0L engine to generate a sensing signal, and the fifth sensor 51 cannot generate a sensing signal; if the workpiece is the crankshaft of a 2.5L engine, the fifth sensor 51 can sense the fluted disc on the crankshaft of the 2.5L engine to generate a sensing signal, and the fourth sensor 43 cannot generate a sensing signal.
Fourth inductor 51, fifth inductor 52 are correlation formula photoelectric sensor, and correlation formula photoelectric sensor includes transmitter and receiver, the detection light that fourth inductor 51 sent is vertical down, the transmitter of fourth inductor is installed on second sensor support 53 and is located the top at roll table conveying mechanism middle part, the receiver ware of fourth inductor is installed on crane 1, and the detection light that fourth inductor 51 sent does not take place to interfere with the deflector roll. The detection light emitted by the fifth sensor 52 is parallel to the extending direction of the guide roller, and the fifth sensor 52 is arranged at the top of the mounting seat through a third sensor support.
A recognition comparison method based on a lifting roller way conveying device is characterized in that a tray is conveyed to a detection station, a recognition module on the tray enables part of sensors in a first sensing group 4 to sense, a workpiece on the tray enables part of sensors in a second sensing group 5 to sense, each sensor feeds back sensing signals to a control module, and the control module generates a tray recognition result and a workpiece recognition result through analysis; and the control module compares the tray identification result with the workpiece identification result.
If the pallet is the first pallet 61 with the correct placing posture in the pallet recognition result, and the workpiece is the first workpiece 64 in the workpiece recognition result, the pairing between the pallet and the workpiece is correct;
if the pallet is the second pallet 71 with the correct placing posture in the pallet recognition result and the workpiece is the second workpiece 74 in the workpiece recognition result, the pairing between the pallet and the workpiece is correct;
if the pallet is the first pallet 61 with the correct placing posture in the pallet recognition result and the workpiece is the second workpiece 74 in the workpiece recognition result, the pairing between the pallet and the workpiece is incorrect;
if the pallet is the second pallet 71 with the correct placing posture in the pallet recognition result, and the workpiece is the first workpiece 64 in the workpiece recognition result, the pairing between the pallet and the workpiece is incorrect;
and if the tray is the tray with the reversed placing posture in the tray recognition result, the tray and the workpiece are not correctly matched.
Specifically, the tray identification logic in the above scheme 1 is adopted to set the tray:
if the first sensor 41 and the second sensor 42 in the first sensing group 4 can sense and identify the bump, and the third sensor 43 cannot sense and identify the bump, the control module determines that the tray on the detection station is the first tray 61 with the correct placing posture;
if the third sensor 43 in the first sensing group 4 can sense the identification bump, and the first sensor 41 and the second sensor 42 cannot sense the identification bump, the control module determines that the tray on the detection station is the first tray 61 with reversed placing posture;
if the first inductor 41 and the third inductor 43 in the first induction group 4 can sense and identify the bumps, and the second inductor 42 cannot sense and identify the bumps, the control module determines that the tray on the detection station is the second tray 71 with a correct placing posture;
if the second sensor 42 and the third sensor 43 in the first sensing group 4 can sense the identification bump, but the first sensor 41 cannot sense the identification bump, the control module determines that the tray at the detection station is the second tray 71 with reversed posture.
If the fourth sensor 51 in the second sensing group 5 can sense the first distinguishing characteristic 65 and the fifth sensor 52 cannot sense the second distinguishing characteristic 75, the control module determines that the workpiece at the detection station is the first workpiece 64;
if the fifth sensor 52 of the second sensing set 5 is able to sense the second distinguishing characteristic 75 and the fourth sensor 51 is not able to sense the first distinguishing characteristic 65, the control module determines that the workpiece at the inspection station is the second workpiece 74.
In one embodiment, as shown in fig. 1 and 10, the lifting mechanism 2 includes an underframe 21 and a first cylinder 22 arranged vertically upward, a cylinder body of the first cylinder 22 is fixedly connected with the underframe 21, and an end of a piston rod of the first cylinder 22 is connected with the crane 1 through a connecting plate 23.
Preferably, as shown in fig. 10, two first guide rods 24 are disposed on the bottom surface of the connecting plate 23, a first sliding sleeve 25 corresponding to the guide rods is fixedly disposed on the base frame 21, and the two first guide rods 24 are slidably inserted into the first sliding sleeve 25 respectively. Through the guide effect of first sliding sleeve 25 and first guide bar 24, can guarantee that the direction of motion of crane 1 is correct, can also avoid the piston rod of first cylinder 22 to receive the shearing force, prevent that the piston rod from warping because of the shearing force.
In one embodiment, as shown in fig. 11, the roller conveyor 3 includes two mounting seats 31, a plurality of guide rollers 38 disposed between the two mounting seats 31, a driving motor 33, and a transmission mechanism; the transmission mechanism comprises a torque limiter 34 arranged at the output end of a driving motor 33, a friction chain wheel 35 is arranged on the torque limiter 34, a driving chain wheel (not visible in the figure) and a driven chain wheel 37 are arranged at the end part of the guide roller 38, the friction chain wheel 35 is in transmission connection with the driving chain wheel on one guide roller 38 through a first chain 36 (a part of chain is schematically drawn in the figure), and the driven chain wheel 37 on the guide roller 38 is in transmission connection through a second chain 39. The torque limiter 34 comprises a coupling main body, a driving friction plate, a driven friction plate, a disc spring and a locking end cover, wherein the driving friction plate, the driven friction plate, the disc spring and the locking end cover are arranged on the coupling main body, the friction chain wheel 35 is arranged between the driving friction plate and the driven friction plate, and the disc spring is used for pressing the driven friction plate to enable the friction chain wheel 35 to rotate under the action of friction force provided by the driving friction plate and the driven friction plate. The compression amount of the disc spring can be adjusted by locking the end cover, so that the function of adjusting the torsion preset value of the torsion limiter 34 is achieved. When the external force received by the guide roller 38 exceeds 75N, the transmission torque of the friction sprocket 35 and the torque limiter 34 is instantly increased and exceeds the preset sliding torque value of the torque limiter 34, so that the friction sprocket 35 and the torque limiter 34 slip, the guide roller 38 immediately stops moving, and the purpose of protecting the safety of manual operation is achieved.
In an embodiment, as shown in fig. 3, the lifting roller way conveying device further includes a first lifting thrust mechanism 91 and a second lifting thrust mechanism 92, the first lifting thrust mechanism 91 and the second lifting thrust mechanism are symmetrically arranged, a detection station is formed between the first lifting thrust mechanism 91 and the second lifting thrust mechanism 92, and each of the first lifting thrust mechanism 91 and the second lifting thrust mechanism 92 includes a support plate 93 arranged on the lifting frame 1, a second cylinder 94 vertically arranged on the support plate 93 upwards, a connecting block 95 arranged at an end of a piston rod of the second cylinder 94, and thrust blocks 96 respectively arranged at two ends of the connecting block 95. The first elevating thrust mechanism 91 prevents the pallet from retreating, and the second elevating thrust mechanism 92 prevents the pallet from being conveyed forward. It should be understood that when the first elevating thrust stop mechanism 91 and the second elevating thrust stop mechanism 92 operate, the thrust block 96 extends out and is higher than the bearing surface of the roller conveyor mechanism 3, and the connecting block 95 is not higher than the bearing surface of the roller conveyor mechanism 3.
Specifically, as shown in fig. 3, the thrust device 96 includes a support 96.1 and a thrust block 96.2 rotatably disposed on the support 96.1, the support 96.1 is provided with a limit groove 96.3, the thrust block 96.2 is disposed in the limit groove 96.3 through a pin 96.4, the pin 96.4 is provided with a torsion spring 96.5, and the torsion spring 96.5 is used for pulling the thrust block 96.2 to enable the thrust block 96.2 to press against the support 96.1.
Preferably, as shown in fig. 3, two second guide rods 96.6 are disposed on a bottom surface of the connecting block 95, a second sliding sleeve 96.7 corresponding to the second guide rods 96.6 is fixedly disposed on the support plate 93, and the two guide rods are respectively slidably inserted in the second sliding sleeve. Through the guide effect of second sliding sleeve 96.7 and second guide bar 96.6, can guarantee that the direction of motion of connecting block 95 board is correct, can also avoid the piston rod of second cylinder 94 to receive the shearing force, prevent that the piston rod from warping because of the shearing force.
When the lifting frame 1 is pressed against the underframe 21 (i.e. when the piston rod of the first cylinder 22 is in a retracted state), the second cylinder 94 of the first lifting thrust-stopping mechanism 91 and the second lifting thrust-stopping mechanism 92 drives the connecting block 95 to ascend, so that the stopper 96 arranged on the connecting block 95 extends out and is higher than the bearing surface of the roller bed conveying mechanism 3. When the tray with the qualified products enters the detection station, the tray overcomes the elasticity of the torsion spring 96.5 and pushes the thrust block 96.2 on the first lifting thrust mechanism 91 to swing, so that the bottom surface of the tray presses the thrust block 96.2, the tray is smoothly conveyed forwards, after the tray passes through the first lifting thrust mechanism 91, the elasticity applied by the torsion spring 96.5 to the thrust block 96.2 pulls the thrust block 96.2, so that the thrust block 96.2 is pressed against the limiting groove 96.3, at the moment, the thrust block 96.2 is in a vertical state, even if the tray pushes the thrust block 96.2 backwards, the thrust block 96.2 is limited by the support 96.1 to rotate, so that the tray is prevented from continuously moving backwards, the tray is ensured to only move in one direction, and the tray entering the upper roller conveying mechanism 3 and the lower roller conveying mechanism 3 is prevented from moving backwards and separating from the roller conveying device to cause the crankshaft to fall onto the ground.
To better restrain the tray in the inspection station, the thrust block 96 on the second elevator thrust mechanism 92 stops the tray from advancing further, and when the tray pushes the thrust block 96.2, the thrust block 96.2 is restrained from rotating by the seat 96.1.
When the workpiece and the tray are not correctly matched, the control module controls the thrust stopper 96 in the first lifting thrust mechanism 91 to descend, so that a quality inspector can pull the tray loaded with the workpiece back to the quality inspection platform, and the tray is placed in a correct posture or is replaced by a tray matched with the workpiece in a correct mode according to a comparison result.
Unqualified work piece overhauls and to become the qualification piece after accomplishing, and these qualification pieces need empty tray to bear, and these empty trays are provided by the lower floor of unloading roll table transfer chain, and empty tray passes through second lift thrust mechanism 92 after, the empty tray of stopper 96 restriction moves backward, guarantees that empty tray can only unidirectional movement.
The surface of every work piece is pasted and is had peculiar bar code or two-dimensional code, when the work piece can send unloading roll table transfer chain, represents the work piece and can the loading, so be provided with camera on the roll table conveying mechanism and sweep yard device 14, the camera sweeps yard device and sweeps the sign indicating number to with the information input control module of this work piece.
Preferably, referring to fig. 1, guide strips 11 are disposed on the inner sides of the two mounting seats 31, and the guide strips 11 are fixedly connected with the mounting seats 31 through guide adjusting plates 12. The tray moves between two guide strips 11, and guide strips 11 guide the tray to keep rectilinear movement track, prevent that the tray off tracking from influencing the placement accuracy of bent axle. In addition, the distance between the two guide strips 11 can be adjusted through the position of the guide adjusting plate 12, and the motion guide precision of the tray is improved better.
Preferably, as shown in fig. 10, the lifting roller way conveying device further comprises a falling prevention device 10, wherein the falling prevention device 10 comprises a locking frame 10.1 fixedly arranged on the base frame 21, a jack 10.2 transversely arranged on the locking frame 10.1, and a safety bolt 10.3 capable of being inserted into the jack 10.2, and the safety bolt 10.3 is used for blocking the first guide rod 24 from falling. When the degree of cooperation of roller way conveyor and unloading roller way transfer chain is debugged and is maintained under the state of lifting, insert safety bolt 10.3 in jack 10.2, can avoid in the maintenance process crane 1 suddenly out of control to fall, cause personnel's damage.
Preferably, the chassis 21 is further provided with a signal output switch 10.4 and a bolt support, after the maintenance is completed, the safety bolt 10.3 is pulled down, the safety bolt 10.3 is inserted into the bolt support, the safety bolt 10.3 triggers the signal output switch 10.4, and the signal output switch 10.4 outputs a signal, so that the lifting roller way conveying device can normally and automatically operate.
Preferably, the bottom of the leg of the lifting frame 1 is provided with a cushion block 13, and the cushion block 13 is arranged to reduce the rigid collision between the lifting frame 1 and the underframe 21.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the protective scope of the present invention.

Claims (7)

1. A lifting roller way conveying device is characterized by comprising a lifting frame, a lifting mechanism for lifting the lifting frame and a roller way conveying mechanism arranged on the lifting frame; the roller way conveying mechanism is used for conveying the tray; each tray is provided with an identification module arranged at a preset position, the roller conveying mechanism is provided with a first induction group and a second induction group, the first induction group is used for identifying the arrangement position of the identification module on the tray, and the second induction group is used for identifying the type of a workpiece; the tray comprises a first tray and a second tray, the first tray is provided with a first identification module and a first bearing seat, and the second tray is provided with a second identification module and a second bearing seat; the first bearing seat is used for bearing a first workpiece, and the second bearing seat is used for bearing a second workpiece; the first induction group comprises a first inductor, a second inductor and a third inductor; the second induction group comprises a fourth inductor and a fifth inductor, a first distinguishing feature different from the second workpiece is arranged on the first workpiece, and a second distinguishing feature different from the first workpiece is arranged on the second workpiece; the fourth sensor is used for sensing whether the workpiece has a first distinguishing characteristic or not; the fifth sensor is used for sensing whether the workpiece has a second distinguishing characteristic or not; the first sensor, the second sensor and the third sensor are all correlation photoelectric sensors, and detection light rays emitted by the first sensor and the second sensor are arranged in a crossed mode but are not intersected.
2. The apparatus according to claim 1, wherein the tray has 4 corners, and the 4 corners are respectively set as left front portion, right front portion, left rear portion and right rear portion; the first sensor is used for detecting whether an identification module is arranged on the right rear part of the tray or not; the second sensor is used for detecting whether the identification module is arranged on the left rear part of the tray or not; the third sensor is used for detecting whether an identification module is arranged on any part of the left front part and the right front part.
3. The rollgang transport apparatus of claim 2 wherein the first identification modules are identification bumps disposed on the left and right rear portions of the first tray and the second identification modules are identification bumps disposed on the right and right front portions of the second tray.
4. The lifting roller way conveying device as claimed in claim 1, wherein the lifting mechanism comprises an underframe and a first cylinder arranged vertically upwards, a cylinder body of the first cylinder is fixedly connected with the underframe, and the end part of a piston rod of the first cylinder is connected with the lifting frame through a connecting plate.
5. The apparatus according to claim 1, wherein the roller conveyor mechanism comprises two mounting seats, a plurality of guide rollers disposed between the two mounting seats, a driving motor, and a transmission mechanism; drive mechanism is including setting up the torque limiter on the driving motor output, be equipped with friction sprocket on the torque limiter, every the tip of deflector roll is equipped with drive sprocket and driven sprocket, friction sprocket is connected through the drive sprocket transmission on first chain and one of them deflector roll, driven sprocket on the deflector roll passes through the second chain transmission and connects.
6. The lifting roller way conveying device according to claim 1, further comprising a first lifting thrust mechanism for preventing the tray from retreating and a second lifting thrust mechanism for preventing the tray from being conveyed forwards, wherein a detection station is formed between the first lifting thrust mechanism and the second lifting thrust mechanism, and the first lifting thrust mechanism and the second lifting thrust mechanism respectively comprise a support plate arranged on the lifting frame, a second cylinder vertically arranged on the support plate upwards, a connecting block arranged at the end part of a piston rod of the second cylinder, and thrust devices respectively arranged at two ends of the connecting block.
7. The device according to claim 5, wherein the third sensor is a correlation photoelectric sensor, and the detection light emitted from the third sensor is parallel to the extending direction of the guide roller.
CN202111196798.8A 2020-05-27 2020-05-27 Lifting roller way conveying device Pending CN114084573A (en)

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