Double detection rejection system

Abstract

The present invention relates to a double detection and rejection system, comprising: a control device; a first conveying device; a first detector, which is arranged on one side of the first conveying device and is electrically connected to the control device; a reflux conveying device, which is connected end to end with the first conveying device and forms a first circulation inspection channel; and the reflux conveying device is provided with a first rejection mechanism, the reflux conveying device is electrically connected to the control device and has a two-way flow capacity; a second conveying device, which is connected end to end with the reflux conveying device and forms a second circulation inspection channel; a second detector, which is arranged on one side of the second conveying device and is electrically connected to the control device; and a second rejection mechanism, the second rejection mechanism is connected to the second conveying device. The double detection and rejection system of this technical solution can automatically perform secondary circulation detection and rejection operations on products with two different types of identification information, effectively solve the problem of misjudgment, and greatly improve the product detection accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of product quality inspection, and in particular to a double detection and rejection system. Background Art

[0002] Traditionally, to ensure product quality, a series of tests such as weight and metal are generally carried out before leaving the factory, so that defective products can be rejected in time. In the production process, due to the existence of various uncontrollable factors, it is very easy for qualified products to be mistakenly rejected from the production line. At this time, the product needs to be manually put back into the production line for secondary inspection. This operation method has a large problem of misjudgment and poor controllability of detection accuracy. In addition, with the further improvement of people's quality of life, in order to reflect the individual characteristics of products or improve product quality, traditional one-dimensional codes or two-dimensional codes have gradually been replaced by digital codes and graphic codes. At present, there is no rejection system on the market that can perform digital code and graphic code detection at the same time. Summary of the invention

[0003] Based on this, it is necessary to provide a dual detection and rejection system that can automatically perform secondary cycle detection and rejection operations on products with two different types of identification information, effectively solve the problem of misjudgment, and greatly improve product detection accuracy.

[0004] The technical solution is as follows:

[0005] A double detection rejection system, comprising:

[0006] Control devices;

[0007] a first conveying device;

[0008] A first detector, disposed on one side of the first conveying device and electrically connected to the control device;

[0009] A reflux conveying device is connected end to end with the first conveying device to form a first circulation inspection channel; and the reflux conveying device is provided with a first waste rejection mechanism, and the reflux conveying device is electrically connected to the control device and has a two-way flow capability;

[0010] A second conveying device is connected end to end with the reflux conveying device to form a second circulation inspection channel;

[0011] A second detector is disposed on one side of the second conveying device and is electrically connected to the control device; and

[0012] A second waste rejection mechanism cooperates with the second conveying device.

[0013] The same product with two or more types of identification information or two or more types of products with different identification information enter the double detection and rejection system from the first conveying device. When passing through the first detector, the first detector can identify and detect whether the first type of identification information (such as OCR digital code, one-dimensional code, barcode, etc.) on the product is missing, blurred or tilted. If the current product has the above defects, the first detector will feedback the signal to the control device to mark the product for the first time; the product can enter the first conveying device again through the reflux conveying device, and when the product passes through the first detector again, it will be identified and tested for the second time. If the test results show that the above defects do not appear, it can be determined that the first test is a misjudgment, and the system defines the product as a good product and conveys it downstream; if the second test again identifies that the product has the above defects, it can be determined that the product does have quality problems. At this time, the defective product can be removed from the production line through the first rejection mechanism. When the first detector detects that the misjudged product moves into the second conveying device and passes through the second detector, the second detector identifies and detects whether the second type of identification information (such as graphics, QR codes, bar codes, etc.) on the product has stains, tilts, offsets and other defects; when the detection result shows that the product quality is intact, it is transmitted downstream through the second rejection mechanism, and when the detection result shows that the product has the above defects, the second detector feedbacks the signal to the control device to mark the product for the first time; the product then enters the second conveying device again through the reflux conveying device, and when the product passes through the second detector again, a second identification test is performed. If the test result shows that the above defects do not appear, it can be determined that the first detection is a misjudgment, and the system defines the product as a good product and conveys it downstream; if the second detection again identifies that the product has the above defects, it can be determined that the product does have quality problems. At this time, the defective product can be removed from the production line through the second rejection mechanism. In summary, the dual detection and rejection system of the present technical solution can automatically perform secondary cycle detection and rejection operations on products with two different types of identification information, effectively solving the problem of misjudgment and greatly improving product detection accuracy.

[0014] The technical solution of this application is further described below:

[0015] In one of the embodiments, it further includes a first detection sensor, wherein the first detector is an OCR detection camera, and the first detection sensor is electrically connected to the OCR detection camera.

[0016] In one of the embodiments, it further includes a first flow sensor and a first driving member electrically connected to the control device respectively, and the first flow sensor and the first driving member are sequentially arranged at one end of the reflux conveying device.

[0017] In one embodiment, the reflux conveying device includes a frame, the frame is provided with a falling object channel, the first waste rejection mechanism includes a telescopic driving member arranged on the frame, and a shielding member drivingly connected to the telescopic driving member, and the shielding member can block or open the entrance of the falling object channel.

[0018] In one of the embodiments, it further includes a second detection sensor, wherein the second detector is a visual pattern detection camera, and the second detection sensor is electrically connected to the visual pattern detection camera.

[0019] In one embodiment, it further includes a second flow sensor and a second driving member electrically connected to the control device, respectively, and the second flow sensor and the second driving member are sequentially arranged downstream of the second detector.

[0020] In one of the embodiments, it also includes a patrol sensor arranged on one side of the second conveying device and electrically connected to the control device, and the reflux conveying device also includes a rotating drive member arranged on the frame, a rotating tray drivingly connected to the rotating drive member, and a reversing conveying member movably arranged on the rotating tray.

[0021] In one embodiment, the second waste rejection mechanism includes a waste rejection conveying component, a waste rejection driving component disposed on one side of the waste rejection conveying component, and a receiving component disposed on the other side of the waste rejection conveying component and opposite to the waste rejection driving component.

[0022] In one embodiment, the second waste rejection mechanism further includes a waste rejection sensor disposed upstream of the waste rejection driving member and electrically connected to the waste rejection driving member.

[0023] In one embodiment, the first conveying device, the second conveying device and the reflux conveying device all include a conveyor belt and adjustment baffles arranged on both sides of the conveyor belt. The two adjustment baffles are arranged at intervals to form a conveying channel and can be close to or away from each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a double detection and rejection system according to an embodiment of the present invention.

[0025] Description of reference numerals:

[0026] 10. First conveying device, 20. First detector, 30. Reflux conveying device, 31. First waste rejection mechanism, 40. Second conveying device, 50. Second detector, 60. Second waste rejection mechanism, 61. Waste rejection transmission component, 62. Waste rejection drive member, 63. Receiving member, 64. Waste rejection sensor, 70. First detection sensor, 80. First flow sensor, 90. First drive member, 100. Second detection sensor, 110. Second flow sensor, 120. Second drive member, 130. Inspection sensor, 140. Product. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0028] It should be noted that when an element is referred to as being "fixed on", "arranged on" or "mounted on" another element, it may be directly on the other element or there may be an intermediate element. When an element is artificially "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time; the specific method of fixedly connecting one element to another element can be achieved by existing technologies, which will not be described in detail here, and preferably a threaded connection is used.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0031] like Figure 1As shown, a double detection and waste rejection system is demonstrated in an embodiment of the present application, including: a control device; a first conveying device 10; a first detector 20, which is arranged on one side of the first conveying device 10 and is electrically connected to the control device; a reflux conveying device 30, which is connected end to end with the first conveying device 10 and forms a first inspection channel; and the reflux conveying device 30 is provided with a first waste rejection mechanism 31, the reflux conveying device 30 is electrically connected to the control device and has a two-way flow capability; a second conveying device 40, which is connected end to end with the reflux conveying device 30 and forms a second inspection channel; a second detector 50, which is arranged on one side of the second conveying device 40 and is electrically connected to the control device; and a second waste rejection mechanism 60, which is connected to the second conveying device 40.

[0032] The same product 140 with two or more types of identification information or two or more types of products 140 with different identification information enter the double detection and rejection system from the first conveying device 10. When passing through the first detector 20, the first detector 20 can identify and detect whether the first type of identification information (such as OCR digital code, one-dimensional code, barcode, etc.) on the product 140 is missing, blurred or tilted. If the current product 140 has the above defects, the first detector 20 will feedback a signal to the control device to mark the product 140 for the first time; the product 140 can enter the first conveying device 10 again through the reflux conveying device 30, and when the product 140 passes through the first detector 20 again, a second identification test is performed. If the test result shows that the above defects do not occur, it can be determined that the first test is misjudged, and the system conveys the product 140 downstream; if the second test again identifies that the product 140 has the above defects, it can be determined that the product 140 does have quality problems. At this time, the defective product 140 can be removed from the production line through the first rejection mechanism 31. When the first detector 20 detects that the misjudged product 140 moves into the second conveying device 40 and passes through the second detector 50, the second detector 50 identifies and detects whether the second type of identification information (such as graphics, two-dimensional code, barcode, etc.) on the product 140 has defects such as stains, tilt, offset, etc.; when the detection result shows that the quality of the product 140 is intact, it is transmitted downstream through the second rejection mechanism 60, and when the detection result shows that the product 140 has the above defects, the second detector 50 feeds back a signal to the control device to mark the product 140 for the first time; the product 140 then enters the second conveying device 40 again through the reflux conveying device 30, and when the product 140 passes through the second detector 50 again, a second identification test is performed. If the test result shows that the above defects do not occur, it can be determined that the first detection is misjudged, and the system conveys the product 140 downstream; if the second detection again identifies that the product 140 has the above defects, it can be determined that the product 140 does have quality problems, and the second rejection mechanism 60 can remove the defective product 140 from the production line. In summary, the dual detection and rejection system of the present technical solution can automatically perform secondary cycle detection and rejection operations on the product 140 with two different types of identification information, effectively solving the problem of misjudgment and greatly improving the detection accuracy of the product 140.

[0033] That is to say, it can be understood that the first inspection channel formed by the first conveying device 10 and the reflux conveying device 30, and the second inspection channel formed by the second conveying device 40 and the reflux conveying device 30 can automatically re-inspect the product 140 suspected of being a defective product, thereby replacing the manual operation method in traditional technology, while eliminating human judgment errors and improving the accuracy of rejecting defective products.

[0034] The first detector 20 and the second detector 50 in the present application can be various types of identification information reading devices, such as a barcode scanner, an OCR (Optical Character Recognition) detection camera, a visual pattern detection camera, etc. According to actual processing needs, the two can use any one of the above identification information reading devices to work together (the two can be the same or different), so as to complete the recognition and detection of at least two types of identification information on the product 140 and complete the waste rejection operation.

[0035] Please continue reading Figure 1 Specifically, in this embodiment, the double detection rejection system also includes a first detection sensor 70 and a second detection sensor 100, the first detector 20 is an OCR detection camera, the second detector 50 is a visual pattern detection camera, the first detection sensor 70 is electrically connected to the OCR detection camera, and the second detection sensor 100 is electrically connected to the visual pattern detection camera. Therefore, the OCR detection camera can recognize and detect the OCR characters printed on the product 140, accurately identify the defects of missing, blurred or tilted digital codes, and identify defects through the means of cyclic secondary detection and remove defective products from the production line; similarly, the visual pattern detection camera can recognize and detect the pictures printed on the product 140, accurately identify the defects of stains, pixel deviation, skewness, etc. in the pictures, and identify defects through the means of cyclic secondary detection and remove defective products from the production line. And through the setting of the first detection sensor 70 and the second detection sensor 100, the position information of the product 140 can be accurately known, and the OCR detection camera and the visual pattern detection camera can be awakened in time to enter the working state.

[0036] In addition, the first conveying device 10 is composed of a differential conveyor belt mechanism and a non-powered smooth conveyor belt mechanism. Specifically, the product 140 is provided with forward driving force by the differential conveyor belt, and slides through the non-powered smooth conveyor belt mechanism under the action of inertia, and then passes through the return conveying device 30 and returns to the differential conveyor belt mechanism to complete a cycle of inspection. The second conveying device 40 is arranged downstream of the return conveying device 30, and is also composed of a non-powered smooth conveyor belt mechanism and a differential conveyor belt mechanism. Specifically, the product 140 passes through the return conveying device 30 under the action of inertia and enters the smooth conveyor belt mechanism, then enters the differential conveyor belt mechanism and finally returns to the smooth conveyor belt mechanism to complete a cycle of inspection.

[0037] Please continue reading Figure 1In addition, it should be noted that the so-called bidirectional flow capacity of the reflux conveying device 30 specifically means that the reflux conveying device 30 can provide driving forces in two opposite directions in a straight line direction, that is, when the reflux conveying device 30 cooperates with the first conveying device 10 to form a first inspection channel, a clockwise driving force is provided; and when the reflux conveying device 30 cooperates with the second conveying device 40 to form a second inspection channel, a counterclockwise driving force is provided.

[0038] Furthermore, the first conveying device 10, the second conveying device 40 and the reflux conveying device 30 all include a conveyor belt and an adjustment baffle disposed on both sides of the conveyor belt. The two adjustment baffles are arranged at intervals to form a conveying channel and can be close to or away from each other. By adjusting the spacing between the adjustment baffles, the size of the conveying channel is adapted to the size of the product 140, and the posture and moving path of the product 140 can be corrected and rectified to ensure that the product 140 can be smoothly conveyed along the conveying channel.

[0039] In order to save equipment floor space, the first inspection channel and the second inspection channel in the present application are arranged in a ring structure, that is, the connection between the first conveying device 10 and the return conveying device 30, and the connection between the return conveying device 30 and the second conveying device 40 are turning sections. At this time, external power needs to be provided to enable the product 140 to complete the change of direction. Please continue to read Figure 1 Therefore, the double detection rejection system further includes a first flow sensor 80 and a first drive member 90 electrically connected to the control device, and a second flow sensor 110 and a second drive member 120 electrically connected to the control device, wherein the first flow sensor 80 and the first drive member 90 are sequentially arranged at one end of the return conveying device 30. The second flow sensor 110 and the second drive member 120 are sequentially arranged downstream of the second detector 50. Therefore, the first flow sensor 80 and the second flow sensor 110 can detect the position information of the product 140, and when the product 140 moves to the turning place, the feedback signal is given to the first drive member 90 and the second drive member 120 to output a linear thrust, so as to push the product 140 into the conveying path in another direction, thereby completing the directional flow of the product 140, with high reliability and sensitive action.

[0040] When the product 140 is determined to be a defective defective product after secondary inspection in the first inspection channel, it is necessary to remove the defective product from the production line. Therefore, in a further embodiment of the present application, the reflux conveying device 30 includes a frame, and the frame is provided with a falling object channel, and the first waste rejection mechanism 31 includes a telescopic drive member arranged on the frame, and a shielding member connected to the telescopic drive member, and the shielding member can block or open the entrance of the falling object channel. At this time, when the defective product moves to the reflux conveying device 30, the telescopic drive member recycles the drive shielding member and opens the entrance of the falling object channel, and the defective product can directly fall into the recovery basket preset in the falling object channel, effectively completing the rejection of defective products, and the defective products are easy to be processed in a centralized manner. This waste rejection method has high accuracy, and there will be no problems of wrong or missed rejection, and it will not affect the transmission capacity of the reflux conveying device 30 during normal operation.

[0041] Furthermore, when the product 140 enters the second inspection channel for visual image inspection, according to the above solution, the flow direction of the product 140 needs to change. Figure 1 In an optional embodiment, the double detection rejection system further includes a patrol sensor 130 disposed on one side of the second conveying device 40 and electrically connected to the control device, and the return conveying device 30 further includes a rotating drive member disposed on the frame, a rotating tray drivingly connected to the rotating drive member, and a reversing conveying member movably disposed on the rotating tray. When the product 140 detects that the image has defects such as stains and deflection for the first time, it is pushed into the second patrol channel by the second drive member 120 for re-identification and detection. When moving through the patrol sensor 130, the patrol sensor 130 feeds back a signal to the control device, and the control device immediately outputs an instruction to make the rotating drive member work, and the outputted rotating power drives the rotating tray to rotate 180 degrees, so that the transmission direction of the return conveying device 30 is adjusted from clockwise to counterclockwise, so that the product 140 can enter the second conveying device 40 again and be recognized and detected by the visual pattern detection camera. At this time, the rotating drive member automatically drives the rotating tray to reset, so that the return conveying device 30 returns to the initial transmission direction, so that the product 140 located in the first patrol channel can be detected and used.

[0042] Furthermore, the second reject mechanism 60 includes a reject conveying assembly 61, a reject driving member 62 disposed on one side of the reject conveying assembly 61, and a receiving member 63 disposed on the other side of the reject conveying assembly 61 and opposite to the reject driving member 62. When the product 140 is confirmed as a defective product with defects in the image after the second re-inspection, the second driving member 120 does not move, and the reject conveying assembly 61 directly conveys the product 140 downstream, and when it moves through the station of the reject driving member 62, it is pushed out of the production line.

[0043] On the basis of the above embodiment, the second reject mechanism 60 further includes a reject sensor 64 disposed upstream of the reject drive 62 and electrically connected to the reject drive 62. The reject sensor 64 can accurately detect the position of the product 140, so that the reject drive 62 can accurately push the defective product, thereby improving the reject accuracy and efficiency.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A double detection and rejection system, characterized in that: include: Control devices; a first conveying device; A first detector, disposed on one side of the first conveying device and electrically connected to the control device; A reflux conveying device is connected end to end with the first conveying device to form a first circulation inspection channel; and the reflux conveying device is provided with a first waste rejection mechanism, and the reflux conveying device is electrically connected to the control device and has a two-way flow capability; A second conveying device is connected end to end with the reflux conveying device to form a second circulation inspection channel; A second detector, disposed on one side of the second conveying device and electrically connected to the control device; a second waste rejection mechanism, the second waste rejection mechanism cooperates with the second conveying device; The reflux conveying device includes a frame, and also includes a patrol sensor disposed on one side of the second conveying device and electrically connected to the control device, and the reflux conveying device also includes a rotating driving member disposed on the frame, a rotating tray drivingly connected to the rotating driving member, and a reversing conveying member movably disposed on the rotating tray; and The so-called bidirectional flow capacity of the reflux conveying device specifically means that the reflux conveying device can provide two opposite directions of driving force in the linear direction, that is, when the reflux conveying device cooperates with the first conveying device to form the first inspection channel, it provides a clockwise driving force; and when the reflux conveying device cooperates with the second conveying device to form the second inspection channel, it provides a counterclockwise driving force; During operation, the same product with two or more types of identification information or two or more types of products with different identification information enter the double detection and rejection system from the first conveying device. The first inspection channel formed by the first conveying device and the reflux conveying device and the second inspection channel formed by the second conveying device and the reflux conveying device can automatically re-inspect products suspected of being defective.

2. The double detection rejection system according to claim 1 is characterized in that: It also includes a first detection sensor, the first detector is an OCR detection camera, and the first detection sensor is electrically connected to the OCR detection camera.

3. The double detection rejection system according to claim 1 is characterized in that: It also includes a first flow sensor and a first driving member electrically connected to the control device respectively, and the first flow sensor and the first driving member are sequentially arranged at one end of the reflux conveying device.

4. The double detection rejection system according to claim 1 is characterized in that: The frame is provided with a falling object channel, and the first waste rejection mechanism includes a telescopic driving member arranged on the frame, and a shielding member drivingly connected to the telescopic driving member, and the shielding member can block or open the entrance of the falling object channel.

5. The double detection rejection system according to claim 1 is characterized in that: It also includes a second detection sensor, the second detector is a visual pattern detection camera, and the second detection sensor is electrically connected to the visual pattern detection camera.

6. The double detection rejection system according to claim 1 is characterized in that: It also includes a second flow sensor and a second driving member electrically connected to the control device respectively, and the second flow sensor and the second driving member are sequentially arranged downstream of the second detector.

7. The double detection rejection system according to claim 1 is characterized in that: The first conveying device and the second conveying device are both composed of a differential conveyor belt mechanism and a non-powered smooth conveyor belt mechanism.

8. The double detection rejection system according to claim 1 is characterized in that: The second waste rejection mechanism includes a waste rejection conveying component, a waste rejection driving member arranged on one side of the waste rejection conveying component, and a receiving member arranged on the other side of the waste rejection conveying component and opposite to the waste rejection driving member.

9. The double detection rejection system according to claim 8, characterized in that: The second waste rejection mechanism further includes a waste rejection sensor which is arranged upstream of the waste rejection driving member and is electrically connected to the waste rejection driving member.

10. The double detection and rejection system according to any one of claims 1 to 9, characterized in that: The first conveying device, the second conveying device and the reflux conveying device all include a conveying belt and adjustment baffles arranged on both sides of the conveying belt. The two adjustment baffles are arranged at intervals to form a conveying channel and can be close to or away from each other.

Images