阅读说明：本技术 一种平板电脑尺寸在线检测及修整装置 (Online detection and finishing device for size of tablet personal computer ) 是由 章志华 王东明 于 2021-07-26 设计创作，主要内容包括：本发明公开了一种平板电脑尺寸在线检测及修整装置,属于工件尺寸检测修整技术领域。一种平板电脑尺寸在线检测及修整装置,包括数据采集处理模块、尺寸检测模块、工件修整模块、工件运输模块组成。采用三组位移传感器,三个机械臂、一对百分表,分别安装于传送带上相应的工位,通过对信号的采集及处理测得工件的尺寸,具有精度高、检测速度快等特点。本发明可实现工件尺寸的在线检测及修整,同时具有涉及零件少、安全性高,结构紧凑、检测方式简单,生产效率高等特点,对现有的生产线工件尺寸检测和修整提供了一种新的方案参考,具有较好的使用价值和应用前景。(The invention discloses an online detection and finishing device for the size of a tablet personal computer, and belongs to the technical field of workpiece size detection and finishing. An on-line detection and trimming device for the size of a tablet personal computer comprises a data acquisition and processing module, a size detection module, a workpiece trimming module and a workpiece transportation module. Three sets of displacement sensors, three mechanical arms and a pair of dial indicators are respectively arranged on corresponding stations on the conveying belt, the size of the workpiece is measured by acquiring and processing signals, and the device has the characteristics of high precision, high detection speed and the like. The invention can realize the on-line detection and finishing of the workpiece size, has the characteristics of less related parts, high safety, compact structure, simple detection mode, high production efficiency and the like, provides a new scheme reference for the workpiece size detection and finishing of the existing production line, and has better use value and application prospect.)

1. The utility model provides a panel computer size on-line measuring and trimming device which characterized in that: the conveying belt conveying device comprises a base (11), wherein a second conveying belt section (10) and a first conveying belt section (3) are sequentially arranged on the base (11) from front to back, and a first mechanical arm (7), a second mechanical arm (8) and a third mechanical arm (12) are respectively fixed on the left side and the right side of the base (11);

the rear side of the base (11) is provided with an acquisition processing module;

a size detection module is arranged on the base (11) around the second section (10) of the conveyor belt and the first section (3) of the conveyor belt;

and a workpiece finishing module is arranged on the side edge of the base (11).

2. The on-line detecting and trimming device for the size of the tablet personal computer according to claim 1, wherein: the data acquisition processing module comprises a USB-3300 data acquisition card (1) and a data processing center (2); the USB-3300 data acquisition card (1) and the data processing center (2) are arranged on a base (11) positioned at the rear side.

3. The on-line detecting and trimming device for the size of the tablet personal computer as claimed in claim 2, wherein: the size detection module comprises a first displacement sensor (4), a first dial indicator (5), a first upright post (6), a third displacement sensor (9), a second dial indicator (13), a second upright post (14) and a second displacement sensor (15); the two first displacement sensors (4) are symmetrically arranged on bases (11) on the left side and the right side of a first section (3) of the conveyor belt, the first upright post (6) is arranged above the first section (3) of the conveyor belt and is fixedly connected with the bases (11) on the left end and the right end of the first section, the first dial indicator (5) and the second dial indicator (13) are symmetrically arranged on a guide rail of the first upright post (6) in a front-back mode, and the second upright post (14) is fixed above a second section (10) of the conveyor belt and is fixedly connected with the bases (11) on the left end and the right end of the conveyor belt; three on second displacement sensor (15) equidistance is fixed in second stand (14), two first displacement sensor (4) symmetry is installed on base (11) of the first section of conveyer belt (3) left and right sides.

4. The on-line detecting and trimming device for the size of the tablet computer according to claim 3, wherein: the workpiece finishing module comprises a processing table (16), end grinding equipment (17), a fixed grinding wheel (18) and cutting equipment (19); the processing table (16) is placed between two fixed grinding wheels (18), and the cutting equipment (19) is positioned in a pore between the first section (3) of the conveyor belt and the second section (10) of the conveyor belt; the end grinding equipment (17) is fixed on the left side of the processing table (16).

5. The on-line detecting and trimming device for the size of the tablet computer according to claim 4, wherein: the distance between the second displacement sensor (15) and the upper surface of the second section (10) of the conveyor belt is H, the distance between the two first displacement sensors (4) is L, and the distance between the two third displacement sensors (9) is L'.

6. An on-line detection and trimming process for the size of a tablet computer, applied to the detection and trimming device according to any one of claims 1 to 5, comprising the following steps:

the method comprises the following steps: when a workpiece passes through the first displacement sensor (4), the USB-3300 data acquisition card (1) acquires data of the first displacement sensor (4) and sends the data to the signal data processing center (2), the first displacement sensor (4) can respectively measure distances L1 and L2 from the left end surface and the right end surface S3 of the workpiece, and the signal data processing center (2) can process the distances according to a formula L-L₁-L₂Calculating the width b of the workpiece;

step two: when the workpiece is detected by a first dial indicator (5) and a second dial indicator (13) to form the front end surface and the rear end surface S1 of the workpiece, the USB-3300 data acquisition card (1) acquires dial indicator data and sends the data to the signal data processing center (2), the first dial indicator (5) and the second dial indicator (13) can respectively measure the roughness of the front end surface and the rear end surface S1 of the workpiece, and the signal data processing center (2) compares the roughness with a roughness limit value;

step three: and C, cutting the plate by the cutting equipment (19) according to the width value calculated in the step I, if the width value b is smaller than the specified size, cutting off all the smaller parts by the cutting equipment (19), and sorting out the conveying belt by the third mechanical arm (12). If the width value b is larger than the specified size, the cutting equipment (19) cuts the plate according to the specified length, then the signal data processing center (2) commands the first mechanical arm (7) to grab and place the plate on the processing table (16), the fixed grinding wheel (18) processes the plate, and the first mechanical arm (7) grabs and places the plate back on the conveying belt after the plate is processed. If the width value b is equal to the specified size, no processing is carried out;

according to the comparison result of the roughness value and the limit value, the cutting device (19) cuts the plate, if the roughness of the front end face is smaller than the comparison value, the cutting device (19) cuts the plate according to the specified length, if the roughness of the front end face is larger than the limit value, the cutting device (19) cuts the plate according to the length which is 5mm longer than the specified length and is used as a grinding allowance, then the signal data processing center (2) analyzes the roughness value of the front end face and the rear end face of the workpiece S1 of the workpiece, the first mechanical arm (7) is instructed to grab and place on the processing table (16), the fixed grinding wheel (18) is used for processing, and after the processing is finished, the first mechanical arm (7) grabs and places back on the conveying belt;

step four: when the workpiece passes through the second displacement sensor (15), the USB-3300 data acquisition card (1) acquires sensor data and sends the sensor data to the signal data processing center (2), the second displacement sensor (15) can respectively measure the distances H1, H2 and H3 from the upper end surface S2 and the lower end surface S2 of the workpiece, and the signal data processing center (2) can process the data according to the formula H- (H)₁+H₂+H₃) Calculating the height h of the workpiece;

step five: and according to the height value calculated in the step four, if the measured height value is larger than the specified height, the signal data processing center (2) commands the second mechanical arm (8) to grab and place the second mechanical arm on the processing table (16), the end grinding equipment (17) performs processing, and after the processing is completed, the second mechanical arm (8) grabs and rotates for 90 degrees and then places the second mechanical arm back on the conveyor belt. If the measured height value is less than the specified height, the third mechanical arm (12) sorts out the conveyor belt. If the measured height value is equal to the specified height, no feedback signal exists, and the detection is continued;

step six: when a workpiece passes through the third displacement sensor (9), the USB-3300 data acquisition card (1) acquires sensor data and sends the sensor data to the signal data processing center (2), the third displacement sensor (9) can respectively measure the distances L3 and L4 from the front end surface and the rear end surface S2 of the workpiece, and the signal data processing center (2) processes the data according to the formula L' -L₃-L₄The length w of the workpiece is calculated.

Technical Field

The invention relates to the technical field of workpiece size detection and finishing, in particular to a tablet personal computer size online detection and finishing device.

Background

Nowadays, electronic devices such as mobile phones and computers are widely available, and tablet computers are becoming more and more popular in recent years. In the process of processing the tablet personal computer in a factory, most factories adopt a production line type production mode for improving the production efficiency. Due to the continuous characteristic of the production line, the problems of conveyor belt looseness, transmission part abrasion, failure and the like inevitably exist after the production line is used for a long time, so that the speed of the conveyor belt is unstable. When the workpiece runs on the conveyor belt at a constant speed and is normally processed, the size error of the workpiece is small. When the conditions of abrasion of transmission parts, poor lubrication, untimely maintenance of equipment and the like occur, the conveying speed of the workpiece is unstable, and the error of the processed product is large and even unqualified workpieces are still processed and produced. Traditional manual detection, not only detect the precision poor but also intensity of labour is high, is difficult to satisfy work piece high accuracy and economic nature production requirement. It is desirable to design a device that can automatically detect the size of the workpiece and perform timely trimming to solve the above problems.

Patent CN112658503A discloses a cutting method and a cutting system capable of real-time determining the size of a sheet, the system presets a cutting rule library having a plurality of cutting rules, each cutting rule corresponds to a sheet size, and one cutting rule in the cutting rule library is called and set as a current cutting rule. The invention provides a cutting system and a cutting method capable of judging the size of a plate in real time, and overcomes the defects of low automation degree and low processing efficiency in the conventional cutting method. However, the problems of the continuity of the production line of the actual factory, the establishment of the cutting rule base of the system and the like are not considered, and the practicability is poor.

Patent CN212598079U provides an industrial production automatic monitoring system, solves current panel size detection mode high in labor strength and the lower problem of efficiency. The invention considers the continuity of the factory production line and solves the problem of low manual detection precision. However, the invention does not consider unqualified workpiece products, is improved on the basis of manual detection, and only branches off when unqualified products appear, lacks a trimming device and does not realize an integrated size detection trimming device. Meanwhile, the invention adopts a mechanical detection device, and the detection precision is slightly poor.

Patent CN209639674U discloses a sheet size detection machine, which is characterized by comprising a frame, a conveying belt, a vision detection mechanism, an optical assembly and a camera light source. The dimensions of the sheet material are obtained by means of a visual inspection mechanism according to the prescribed position. The invention can realize effective detection of the plate size and has the characteristics of smaller volume and less occupied space. However, the invention only considers the off-line detection of the workpiece size and does not consider the trimming of unqualified products, and the detection and trimming integrated performance is poor.

Present work piece size detection adopts artifical and mechanical detection device more, and this is difficult to satisfy the complicated changeable machining error of work piece, or detection efficiency is poor, the precision is poor, or even detect the precision very high, nevertheless can not compromise size detection and repairment demand well, has also wasted man-hour and processing raw and other materials simultaneously. The prior detection device and related inventions have many feasible schemes for size detection, but the trimming of the detected workpiece is not considered. If the production line is provided with the detection device and the timely trimming device, the workpiece machining efficiency can be obviously improved, the product rejection rate can be reduced, the workpiece machining precision can be improved, and therefore the factory production and machining cost is reduced, and manpower is saved. Therefore, based on the characteristics of a workpiece production line, an online size detection and finishing device adopting a displacement sensor, dial indicator detection and grinding wheel finishing is designed in consideration of actual working conditions, and an important actual use value of the online size detection and finishing device for the tablet personal computer is designed for the benefit supplement of the existing production line workpiece size detection and finishing scheme.

Disclosure of Invention

The invention aims to provide an on-line detection and trimming device for the size of a tablet personal computer, which aims to solve the problems of low efficiency, low detection precision and the like of the conventional manual detection and mechanical detection device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a size online detection and trimming device for a tablet personal computer comprises a base, wherein a second conveyor belt section and a first conveyor belt section are sequentially arranged on the base from front to back, and a first mechanical arm, a second mechanical arm and a third mechanical arm are respectively fixed on the left side and the right side of the base;

the rear side of the base is provided with an acquisition processing module;

a size detection module is arranged on the base around the second section of the conveyor belt and the first section of the conveyor belt;

and a workpiece finishing module is arranged on the side edge of the base.

Preferably, the data acquisition processing module comprises a USB-3300 data acquisition card and a data processing center; the USB-3300 data acquisition card and the data processing center are arranged on a base positioned on the rear side.

Preferably, the size detection module comprises a first displacement sensor, a first dial indicator, a first upright post, a third displacement sensor, a second dial indicator, a second upright post and a second displacement sensor; the two first displacement sensors are symmetrically arranged on the bases on the left side and the right side of the first section of the conveyor belt, the first upright column is arranged above the first section of the conveyor belt and is fixedly connected with the bases on the left end and the right end of the first section of the conveyor belt, the first dial indicator and the second dial indicator are symmetrically arranged on the guide rail of the first upright column from front to back, and the second upright column is fixed above the second section of the conveyor belt and is fixedly connected with the bases on the left end and the right end of the conveyor belt; three on the second stand is fixed in to the second displacement sensor equidistance, two first displacement sensor symmetry is installed on the base of the first section left and right sides of conveyer belt.

Preferably, the workpiece finishing module comprises a processing table, end grinding equipment, a fixed grinding wheel and cutting equipment; the processing table is placed between the two fixed grinding wheels, and the cutting equipment is positioned in a pore between the first section of the conveying belt and the second section of the conveying belt; the end grinding equipment is fixed on the left side of the processing table.

Preferably, the distance between the second displacement sensor and the upper surface of the second segment of the conveyor belt is H, the distance between the two first displacement sensors is L, and the distance between the two third displacement sensors is L'.

An on-line detection and trimming process for the size of a tablet computer applied to the detection and trimming device of any one of claims 1 to 5, comprising the following steps:

the method comprises the following steps: when a workpiece passes through the first displacement sensor, the USB-3300 data acquisition card acquires data of the first displacement sensor and sends the data to the signal data processing center, the first displacement sensor can respectively measure the distances L1 and L2 from the left end surface and the right end surface S3 of the workpiece, and the signal data processing center processes the data according to a formula L-L₁-L₂Calculating the width b of the workpiece;

step two: when the workpiece is detected by a first dial indicator and a second dial indicator to be the front end surface and the rear end surface S1 of the workpiece, the data of the dial indicators are collected by the USB-3300 data acquisition card and sent to the signal data processing center, the roughness of the front end surface and the rear end surface S1 of the workpiece can be respectively measured by the first dial indicator and the second dial indicator, and the roughness is compared with a roughness limit value by the signal data processing center;

step three: and C, cutting the plate by the cutting equipment according to the width value calculated in the step I, if the width value b is smaller than the specified size, cutting off all the part of the plate by the cutting equipment, and sorting out the conveying belt by the third mechanical arm. If the width value b is larger than the specified size, the cutting equipment cuts the plate according to the specified length, then the signal data processing center orders the first mechanical arm to grab and place the plate on the processing table, the fixed grinding wheel processes the plate, and the first mechanical arm grabs and places the plate back on the conveying belt after the plate is processed. If the width value b is equal to the specified size, no processing is carried out;

and according to the comparison result of the roughness value and the limit value, the cutting equipment cuts the plate, if the roughness of the front end face is smaller than the comparison value, the cutting equipment cuts the plate according to the specified length, if the roughness of the front end face is larger than the limit value, the cutting equipment cuts the plate according to the length which is 5mm longer than the specified length and is used as the grinding allowance, then the signal data processing center analyzes the roughness value of the front end face and the rear end face of the workpiece S1 of the workpiece, the first mechanical arm is instructed to grab and place on the processing table, the fixed grinding wheel is used for processing, and the first mechanical arm grabs and places back on the conveying belt after the processing is finished.

Step four: when the workpiece passes through the second displacement sensor, the USB-3300 data acquisition card acquires sensor data and sends the sensor data to the signal data processing center, the second displacement sensor can respectively measure the distances H1, H2 and H3 from the upper end surface and the lower end surface S2 of the workpiece, and the signal data processing center processes the data according to a formula H- (H)₁+H₂+H₃) Calculating the height h of the workpiece;

step five: and D, according to the height value calculated in the step four, if the measured height value is larger than the specified height, the signal data processing center commands the second mechanical arm to grab and place the second mechanical arm on the processing table, the end grinding equipment performs processing, and after the processing is completed, the second mechanical arm grabs and rotates by 90 degrees and then places the second mechanical arm back on the conveyor belt. And if the measured height value is smaller than the specified height, the third mechanical arm is used for sorting out the conveyor belt. If the measured height value is equal to the specified height, no feedback signal exists, and the detection is continued;

step six: when the workpiece passes through the third displacement sensor, the USB-3300 data acquisition card acquires sensor data and sends the sensor data to the signal data processing center, the third displacement sensor can respectively measure the distances L3 and L4 from the front end surface and the rear end surface S2 of the workpiece, and the signal data processing center processes the distances L' -L according to a formula₃-L₄The length w of the workpiece is calculated.

Compared with the prior art, the invention provides an online detection and trimming device for the size of a tablet personal computer, which has the following beneficial effects:

1. the invention adopts three groups of displacement sensors and a pair of dial indicators, and the displacement sensors and the dial indicators are fixedly arranged on the conveyor belt, thereby having the characteristics of compact structure and small occupied space; the size of the workpiece is detected by controlling the three sets of displacement sensors and the one pair of dial indicators, so that the beneficial effects of saving detection time, guaranteeing high efficiency and high precision of the machining process and the like can be achieved.

2. The three mechanical arms are fixedly arranged to realize the grabbing and placing operations, so that the problems of manual safety and difficulty in taking and placing workpieces are solved, and the conveying device has the characteristic of high conveying efficiency. The three mechanical arms are matched with each other to realize the grabbing and placing of workpieces; one mechanical arm is responsible for sorting unqualified products and sorting out unqualified products in time, and the other two mechanical arms are responsible for processing, grabbing and placing parts.

3. The invention adopts the layout of the linear conveyor belt, when the workpiece reaches different stations, the workpiece enters corresponding procedures, the detection and the trimming are integrated, the control method is simple, the detection precision is high, the safety is good, and the like, the detection and the processing requirements of the workpieces with different sizes can be met, and the adaptability is strong.

Drawings

FIG. 1 is a schematic diagram of the right side structure of the on-line inspection and trimming apparatus of the present invention;

FIG. 2 is a schematic diagram of the left side of the on-line inspection and trimming apparatus of the present invention;

FIG. 3 is a schematic top view of the on-line inspection and trimming apparatus of the present invention;

FIG. 4 is a schematic diagram of a dimension of a workpiece to be inspected according to the present invention;

FIG. 5 is a flow chart of the on-line inspection and trimming steps of the present invention.

Description of the figure numbers: 1. a USB-3300 data acquisition card; 2. a data processing center; 3. a first section of conveyor belt; 4. a first displacement sensor; 5. a first percentile table; 6. a first upright post; 7. a first robot arm; 8. a second mechanical arm; 9. a third displacement sensor; 10. a second section of the conveyor belt; 11. a base; 12. a third mechanical arm; 13. a second dial indicator; 14. a second upright post; 15. a second displacement sensor; 16. a processing table; 17. end milling equipment; 18. fixing the grinding wheel; 19. and (4) cutting equipment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1-5, an online size detecting and trimming device for a tablet personal computer comprises a base (11), wherein a second conveyor belt section (10) and a first conveyor belt section (3) are sequentially arranged on the base (11) from front to back, and a first mechanical arm (7), a second mechanical arm (8) and a third mechanical arm (12) are respectively fixed on the left side and the right side of the base (11);

the rear side of the base (11) is provided with an acquisition processing module;

a size detection module is arranged on the base (11) around the second section (10) of the conveyor belt and the first section (3) of the conveyor belt;

and a workpiece finishing module is arranged on the side edge of the base (11).

The data acquisition processing module comprises a USB-3300 data acquisition card (1) and a data processing center (2); the USB-3300 data acquisition card (1) and the data processing center (2) are arranged on a base (11) positioned at the rear side.

The size detection module comprises a first displacement sensor (4), a first dial indicator (5), a first upright post (6), a third displacement sensor (9), a second dial indicator (13), a second upright post (14) and a second displacement sensor (15); the two first displacement sensors (4) are symmetrically arranged on bases (11) on the left side and the right side of a first section (3) of the conveyor belt, the first upright post (6) is arranged above the first section (3) of the conveyor belt and is fixedly connected with the bases (11) on the left end and the right end of the first section, the first dial indicator (5) and the second dial indicator (13) are symmetrically arranged on a guide rail of the first upright post (6) in a front-back mode, and the second upright post (14) is fixed above a second section (10) of the conveyor belt and is fixedly connected with the bases (11) on the left end and the right end of the conveyor belt; three on second displacement sensor (15) equidistance is fixed in second stand (14), two first displacement sensor (4) symmetry is installed on base (11) of the first section of conveyer belt (3) left and right sides.

The workpiece finishing module comprises a processing table (16), end grinding equipment (17), a fixed grinding wheel (18) and cutting equipment (19); the processing table (16) is placed between two fixed grinding wheels (18), and the cutting equipment (19) is positioned in a pore between the first section (3) of the conveyor belt and the second section (10) of the conveyor belt; the end grinding equipment (17) is fixed on the left side of the processing table (16).

The distance between the second displacement sensor (15) and the upper surface of the second section (10) of the conveyor belt is H, the distance between the two first displacement sensors (4) is L, and the distance between the two third displacement sensors (9) is L'.

A tablet personal computer dimension on-line detection and trimming flow process applied to a tablet personal computer dimension on-line detection and trimming device comprises the following steps:

the method comprises the following steps: when a workpiece passes through the first displacement sensor (4), the USB-3300 data acquisition card (1) acquires data of the first displacement sensor (4) and sends the data to the signal data processing center (2), the first displacement sensor (4) can respectively measure distances L1 and L2 from the left end surface and the right end surface S3 of the workpiece, and the signal data processing center (2) can process the distances according to a formula L-L₁-L₂Calculating the width b of the workpiece;

step two: when the workpiece is detected by a first dial indicator (5) and a second dial indicator (13) to form the front end surface and the rear end surface S1 of the workpiece, the USB-3300 data acquisition card (1) acquires dial indicator data and sends the data to the signal data processing center (2), the first dial indicator (5) and the second dial indicator (13) can respectively measure the roughness of the front end surface and the rear end surface S1 of the workpiece, and the signal data processing center (2) compares the roughness with a roughness limit value;

step three: and C, cutting the plate by the cutting equipment (19) according to the width value calculated in the step I, if the width value b is smaller than the specified size, cutting off all the smaller parts by the cutting equipment (19), and sorting out the conveying belt by the third mechanical arm (12). If the width value b is larger than the specified size, the cutting equipment (19) cuts the plate according to the specified length, then the signal data processing center (2) commands the first mechanical arm (7) to grab and place the plate on the processing table (16), the fixed grinding wheel (18) processes the plate, and the first mechanical arm (7) grabs and places the plate back on the conveying belt after the plate is processed. If the width value b is equal to the specified size, no processing is carried out;

according to the comparison result of the roughness value and the limit value, the cutting device (19) cuts the plate, if the roughness of the front end face is smaller than the comparison value, the cutting device (19) cuts the plate according to the specified length, if the roughness of the front end face is larger than the limit value, the cutting device (19) cuts the plate according to the length which is 5mm longer than the specified length and is used as a grinding allowance, then the signal data processing center (2) analyzes the roughness value of the front end face and the rear end face of the workpiece S1 of the workpiece, the first mechanical arm (7) is instructed to grab and place on the processing table (16), the fixed grinding wheel (18) is used for processing, and after the processing is finished, the first mechanical arm (7) grabs and places back on the conveying belt;

step four: when the workpiece passes through the second displacement sensor (15), the USB-3300 data acquisition card (1) acquires sensor data and sends the sensor data to the signal data processing center (2), the second displacement sensor (15) can respectively measure the distances H1, H2 and H3 from the upper end surface S2 and the lower end surface S2 of the workpiece, and the signal data processing center (2) can process the data according to the formula H- (H)₁+H₂+H₃) Calculating the height h of the workpiece;

step five: and according to the height value calculated in the step four, if the measured height value is larger than the specified height, the signal data processing center (2) commands the second mechanical arm (8) to grab and place the second mechanical arm on the processing table (16), the end grinding equipment (17) performs processing, and after the processing is completed, the second mechanical arm (8) grabs and rotates for 90 degrees and then places the second mechanical arm back on the conveyor belt. If the measured height value is less than the specified height, the third mechanical arm (12) sorts out the conveyor belt. If the measured height value is equal to the specified height, no feedback signal exists, and the detection is continued;

step six: when the workpiece passes through the third displacement sensor (9), the USB-3300 data acquisition card (1) acquires sensor data and hands the sensor data on the signalThe data processing center (2), the third displacement sensor (9) can respectively measure the distances L3 and L4 from the front and rear end faces S2 of the workpiece, and the signal data processing center (2) can be used for processing the distance L' -L according to the formula₃-L₄The length w of the workpiece is calculated.

The invention can realize the on-line detection and finishing of the workpiece size, has the characteristics of less related parts, high safety, compact structure, simple detection mode, high production efficiency and the like, provides a new scheme reference for the workpiece size detection and finishing of the existing production line, and has better use value and application prospect.

The specific implementation mode of the invention comprises a first stage, wherein a first displacement sensor (4) with a distance L is arranged at the left end and the right end of a first section (3) of the conveyor belt to detect the width dimension b of the workpiece, when the workpiece passes through the first displacement sensor (4), the fluctuation condition of the width b of the left end surface S3 and the right end surface S3 of the workpiece when the workpiece passes through a unit length distance is detected by a collection sensor of the USB-3300 data collection card (1), the distances from the first displacement sensor (4) to the workpiece can be respectively obtained, the distances are L1 and L2, and the signal data processing center (2) is used for processing the signal according to a formula L-L₁-L₂And obtaining the width b of the workpiece. If the fluctuation of the width b does not exceed the allowable error range, directly passing through the range and entering the next stage; if the width value b is greater than the allowable value at a certain position in the unit length, the width dimension of the workpiece is recorded, the detected width value is compared with a specified value by a data processing center (2), the grinding allowance is calculated, and the machining is carried out at a fourth stage. If the width b is smaller than the allowable value at a certain position in the unit length, the workpiece plate is sunken in the length direction. The distance of the workpiece movement is controlled to be the distance from the detection point to the cutting point, then the workpiece is stopped, cut by a cutting device (19), and then sorted out by a third mechanical arm (12); the first stage is then repeated.

And in the second stage, detecting the flatness of the front end face S1 of the workpiece, stopping the movement of the first section of the conveyor belt (3) when the front end face S1 of the workpiece reaches the tail end of the first section of the conveyor belt (3), rapidly moving a first dial indicator (5) at the left end in the advancing direction of the workpiece on a first upright post (6) along the width direction, measuring the flatness of the front end face, acquiring dial indicator data by using the USB-3300 data acquisition card (1), submitting the data to the signal data processing center (2) for analysis if the precision requirement is met, starting the first section of the conveyor belt (3), stopping the movement of the conveyor belt when the workpiece passes through a specified size position of cutting equipment (19), cutting, and controlling the size of the workpiece to be cut after 5mm more, wherein the workpiece is used as the grinding allowance of a fixed grinding wheel (18) during trimming if the requirement is not met.

And in the third stage, cutting a workpiece plate, after cutting by a cutting device (19), rapidly moving a second dial indicator (13) at the right end of the workpiece on a first upright post (6) in the advancing direction along the width direction, measuring the flatness of the cut rear end face S1, collecting dial indicator data by a USB-3300 data collection card (1), and submitting the data to a signal data processing center (2) for analysis if the requirements are met, wherein no feedback result exists, and if the requirements are not met, grinding the cut surface of the rear end face in the next step.

And in the fourth stage, whether the first mechanical arm (7) is used for grabbing the workpiece is controlled according to the detection condition of the previous step and the width trimming value required by the first step, the workpiece is placed on the processing table (16), and the processing table (16) can perform longitudinal and transverse feeding movement after fixing the workpiece. And (3) grinding the front end face S1 and the rear end face S1 and grinding the left end face S3 of the workpiece by matching with a fixed grinding wheel (18), grabbing and placing back the second section (10) of the conveyor belt by the first mechanical arm (7) until the required size is reached, and starting the second section (10) of the conveyor belt.

And in the fifth stage, three second displacement sensors (15) are equidistantly arranged on a second upright post (14), the mounting height of each displacement sensor is H away from the upper surface of the conveying belt, and the flatness detection and the height dimension H measurement are carried out on the upper surface and the lower surface S2 of the workpiece. The USB-3300 data acquisition card (1) acquires sensor data and sends the sensor data to the signal data processing center (2), the second displacement sensor (15) can respectively measure the distances H1, H2 and H3 from the second displacement sensor to the upper and lower end surfaces S2 of the workpiece, and the signal data processing center (2) sends the sensor data to the signal data processing center (2) according to the formula H- (H)₁+H₂+H₃) And/3 calculating the height h of the workpiece. And when the upper surface detection is finished, turning over the workpiece through the second mechanical arm (8), then handing over the workpiece to the first mechanical arm (7), putting the workpiece into the second upright post (14) again, and performing lower surface flatness detection and height dimension h measurement. Then the results of the two measurements are combinedAnd (3) correcting the fluctuation value and the dimension h in the height direction, if the fluctuation value needs to be corrected, clamping by a second mechanical arm (8), placing on a processing table (16), and grinding the redundant dimension by an end grinding device (17) until the required dimension is achieved. If the detection result shows that the workpiece surface has the depression, the workpiece surface is directly sorted out by the third mechanical arm (12).

In the sixth stage, after the workpiece is detected and trimmed to reach the required size in the 5 th stage, the workpiece is rotated by 90 degrees by a second mechanical arm (8) and then is placed back to a second section of conveyor belt (10), third displacement sensors (9) with the distance of L 'are arranged at the left end and the right end of the conveyor belt, sensor data are collected by the USB-3300 data acquisition card (1) and are handed to the signal data processing center (2), the distances L3 and L4 from the third displacement sensors (9) to the front end face and the rear end face S2 of the workpiece can be respectively measured, and the signal data processing center (2) can process the workpiece according to the formula L' -L₃-L₄The length w of the workpiece is calculated.

The invention adopts three groups of displacement sensors and a pair of dial indicators, and the displacement sensors and the dial indicators are fixedly arranged on the conveyor belt, thereby having the characteristics of compact structure and small occupied space; the size of the workpiece is detected by controlling the three sets of displacement sensors and the one pair of dial indicators, so that the beneficial effects of saving detection time, guaranteeing high efficiency and high precision of the machining process and the like can be achieved.

The three mechanical arms are fixedly arranged to realize grabbing and placing operations, so that the problems of manual safety and difficulty in taking and placing workpieces are solved, and the conveying device has the characteristic of high conveying efficiency; the three mechanical arms are mutually matched to realize the grabbing and placing of workpieces. One mechanical arm is responsible for sorting unqualified products and sorting out unqualified products in time, and the other two mechanical arms are responsible for processing, grabbing and placing parts.

The invention adopts the layout of the linear conveyor belt, when the workpiece reaches different stations, the workpiece enters corresponding procedures, the detection and the trimming are integrated, the control method is simple, the detection precision is high, the safety is good, and the like, the detection and the processing requirements of the workpieces with different sizes can be met, and the adaptability is strong.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.