Anchoring product visual inspection system

Abstract

The application discloses an anchor finished product visual detection system and relates to the technical field of anchor detection equipment. The anchor finished product visual detection system comprises a receiving box, an upper opening, a side inclined arrangement and two material lifting holes; a material lifting belt, which is a chain plate type conveying belt, three parallel arrangements, all of which are driven to rotate by a same motor, a horizontal part of the material lifting belt being a detection area; a support frame, which is used for providing an installation position for a rotating shaft of the material lifting belt; a material lifting plate, which is installed on the two material lifting belts, can be extended into the receiving box and is driven by the material lifting belt to move upward in the material lifting hole; a baffle, which is installed on another material lifting belt; the support frame is provided with a detection roller on the detection area; a turnover plate, which is rotationally connected to the support frame, is driven to rotate and reset by a motor; an identification strip, which is attached to the turnover plate; a visual identifier, which is installed on the support frame, can identify the identification strip. The application has the effects of improving anchor cost detection efficiency and next product effective rejection rate.

Description

Technical Field

[0001] This application relates to the technical field of anchor bolt testing equipment, and in particular to a visual inspection system for finished anchor bolts. Background Technology

[0002] Anchor bolts, as a commonly used fastener, are now capable of large-scale automated production. Anchor bolts generally consist of components such as the anchor bolt, expansion sleeve, washer, and nut.

[0003] Some companies do not assemble the anchor bolts themselves, but instead package and sell the anchor bolts with expansion sleeves, washers, and nuts, thus saving on the automated assembly process. Companies with a higher degree of automation will use automated assembly equipment to install the washers and nuts onto the anchor bolts as well, and then sell the assembled finished products.

[0004] The washer portion of an anchor bolt is typically the part with the largest diameter. After assembly, the anchor bolts undergo a final counting and packing process, also known as packaging. During this process, the anchor bolts transported by the conveyor may have ends facing different directions, and some may lack nuts and washers. These anchor bolts are considered defective and must be removed. Otherwise, defective products will appear in the sold products, damaging the company's image and affecting customer use. Therefore, the finished anchor bolts undergo a final inspection process to eliminate defective items.

[0005] The most common method for rejecting defective products is manual selection, but this is inefficient and cannot be done for extended periods. The second method uses sensors or visual scanning to detect the contours of the finished products. This method requires the finished products to remain at the inspection station for a longer time (generally 3-5 seconds), and the different orientations of the finished products also increase the error rate of the scanning. In other words, while increasing the inspection time reduces the defective product packing rate, some defective products will still be mixed in.

[0006] Therefore, a more efficient and accurate finished anchor bolt inspection system is needed to reduce the inspection time and further reduce the defective product packing rate. Summary of the Invention

[0007] To improve upon the shortcomings of existing anchor bolt finished product inspection and rejection methods, which are time-consuming and have a low defect rejection rate, this application provides an anchor bolt finished product visual inspection system.

[0008] The visual inspection system for finished anchor bolts provided in this application adopts the following technical solution:

[0009] A visual inspection system for finished anchor bolts, including

[0010] The receiving box has an opening at the top and is located below the material outlet of the anchor bolt assembly equipment. It is inclined on one side and has two parallel lifting holes from the bottom to the top.

[0011] The material lifting belt is a chain plate type conveyor belt, consisting of three belts arranged side by side. Two of them are opposite to the material lifting holes. The material lifting belt is inclined upward along the material lifting holes and then set horizontally. The material lifting belt is a closed-loop conveyor belt. All three material lifting belts are driven by the same motor. The horizontal part of the material lifting belt is the detection area.

[0012] Support frame, used to provide mounting position for the rotating shaft of the conveyor belt;

[0013] The lifting plates are installed on two lifting belts directly opposite the lifting holes. They can extend into the receiving box to receive the anchor bolts. The anchor bolt washers on the two lifting plates are located outside the two lifting plates. The lifting belts drive the lifting plates to move upward within the lifting holes.

[0014] A baffle is installed on another conveyor belt, positioned opposite the conveyor plate, and can abut against the gasket.

[0015] The support frame has a detection roller above the detection area. The detection roller is driven by a motor and is located on the side of the lifting belt in the middle near the baffle. It can abut against the outer wall of the anchor bolt and drive the anchor bolt to move towards the baffle.

[0016] The lifting plate is L-shaped, and the anchor bolts abut against the lifting plate when the lifting belt moves to the detection area;

[0017] The tilting plate is rotatably connected to the support frame, located at the bottom between the middle lifting belt and the baffle, and on the side of the detection roller facing the direction of movement of the lifting belt. It is driven by a motor to rotate and reset. The tilting plate can drive the upper anchor bolt to rotate to abut against the two lifting plates.

[0018] Identification strips are attached to the flip panel;

[0019] The visual recognition device is mounted on the support frame, located directly above the flip plate. It can recognize the recognition strip. When no recognition strip is detected, the controller controls the motor to drive the flip plate to rotate and reset.

[0020] By adopting the above technical solution, the assembled anchor bolts fall into the receiving box. The rotation of the lifting belt drives the anchor bolts to move upward on the lifting plate, thus transporting the anchor bolts out of the receiving box one by one. When the anchor bolts come into contact with the detection roller, they move towards the baffle: if the gasket is located on the side closer to the baffle, the anchor bolt abuts against both the lifting plate and the baffle, and the gasket is pressed tightly against the baffle; if the gasket is located on the side farther from the baffle, the gasket abuts against the lifting plate, and only abuts against two lifting plates; if there is no gasket, the anchor bolt slides off the other side of the baffle and is rejected. Then, it moves downwards towards the vision detector. The anchor bolts that abut against the baffle will block the identification strip, and then the flipping plate will rotate, causing the anchor bolts to flip onto the two lifting plates. At this time, the gasket of the anchor bolt is located on the side farther from the baffle, thus realizing automatic screening and position adjustment of the anchor bolts. This not only reduces the defect rate in the box but also improves the neatness of the anchor bolt boxing.

[0021] Optionally, the support frame is provided with two guide plates above the position between the two lifting belts directly opposite the lifting hole. The guide plates are located in the detection area and are opposite to the position of the flip plate.

[0022] The two guide plates are V-shaped and not connected at the bottom. The position between the bottoms of the two guide plates is directly opposite the lifting plate.

[0023] By adopting the above technical solution, the guide plate can improve the stability of the anchor bolt flipping during the flipping process of the flipping plate.

[0024] Optionally, when the lifting belt is in the detection zone, a positioning hole is provided in the middle of the upper surface of the lifting plate on the lifting belt located in the middle position. The positioning hole is set to be open on the side facing the baffle, so that the anchor bolt head can abut inside.

[0025] By adopting the above technical solution, the positioning hole allows the anchor head to fall into the positioning hole when the gasket abuts against the baffle, thus serving as a stable fulcrum for the anchor rotation and improving the efficiency of the anchor rotation.

[0026] Optionally, a contact plate is installed at the end of the flip plate away from its own rotation axis. The end face of the contact plate facing the anchor bolt is set with an arc-shaped concave shape, which can fit against the circumferential outer wall of the anchor bolt.

[0027] By adopting the above technical solution, the contact plate configuration can effectively improve the stability of driving the anchor bolt to rotate.

[0028] Optionally, the contact plate and the flip plate are rotatably connected, and a torsion spring is provided at the rotatable connection. The torsion spring can make the arc surface of the contact plate face upward when the flip plate is reset.

[0029] By adopting the above technical solution, the rotation setting of the contact plate can effectively maintain its contact with the anchor bolt during the bolt flipping process, further improving the stability of driving the bolt flipping.

[0030] Optionally, the two ends of the contact plate are folded towards its own rotation axis for a transition.

[0031] By adopting the above technical solution, the design at both ends of the contact plate can effectively drive the contact plate to rotate and fit with the anchor bolt after contacting it, thereby improving the effect of driving the anchor bolt to flip.

[0032] Optionally, two guide rails are fixed to the inner wall of the receiving box. The distance between the two guide rails gradually decreases from the bottom to the top, and the shortest distance between the guide rails is greater than the length of the anchor bolt.

[0033] By adopting the above technical solution, the guide plate can be set to the correct position of the anchor bolt in the receiving box, that is, the gasket is located outside the two lifting plates, so as to facilitate the subsequent identification and detection of the anchor bolt.

[0034] Optionally, the support frame is also equipped with a waste bin in the inspection area, which is located directly below the flip plate.

[0035] By adopting the above technical solution, the waste bin can effectively receive anchor bolts without gaskets that are removed from the inspection area for recycling.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] The anchor bolts move upwards one by one on the lifting plate with the lifting belt. As they pass through the detection roller, the position of the anchor bolts is automatically aligned. The baffle is set to intercept the reversed anchor bolts and reject the anchor bolts without gaskets, which effectively improves the yield of the anchor bolts when they are packed.

[0038] The visual recognition device can effectively identify the identification strip on the flip plate. When the anchor bolt in contact with the baffle blocks the identification strip, it drives the anchor bolt to flip and straighten it. This achieves automatic anchor bolt straightening, improves the neatness of the anchor bolt packing, reduces the time required for subsequent anchor bolt shape inspection, and improves inspection efficiency. Attached Figure Description

[0039] Figure 1 This is a structural schematic diagram of an embodiment of this application;

[0040] Figure 2 This is a partial schematic diagram showing the detection area;

[0041] Figure 3 This is a partial schematic diagram showing the detection components;

[0042] Figure 4 This is a schematic diagram of the guide rail plate.

[0043] In the diagram, 1 is the receiving box; 11 is the lifting hole; 12 is the guide rail plate; 2 is the support frame; 21 is the lifting belt; 211 is the lifting plate; 2111 is the positioning hole; 2112 is the placement groove; 212 is the baffle; 22 is the guide plate; 3 is the detection component; 31 is the detection roller; 32 is the vision recognition device; 33 is the flipping plate; 331 is the contact plate; 332 is the recognition strip; 4 is the adjusting plate; 5 is the waste bin; and 51 is the receiving plate. Detailed Implementation

[0044] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0045] This application discloses a visual inspection system for finished anchor bolts.

[0046] refer to Figure 1 The finished anchor bolt visual inspection system includes a receiving box 1, a support frame 2, a conveyor belt 21, and an inspection component 3. The receiving box 1 has an opening at the top, located below the material inlet of the anchor bolt assembly equipment, and is inclined on one side with two parallel conveyor holes 11 running from bottom to top. The support frame 2 is located on the side of the receiving box 1 with the conveyor holes 11. The conveyor belt 21 consists of three chain-plate conveyor belts arranged side-by-side, two of which are opposite to the conveyor holes 11. The conveyor belt 21 is a closed-loop conveyor belt, inclined upwards along the conveyor holes 11 and then horizontally positioned. All three conveyor belts 21 are driven by the same motor, and the horizontal portion of the conveyor belt 21 is the inspection area. The rotation shaft of the conveyor belt 21 is mounted on the support frame 2 to support the conveyor belt 21.

[0047] Lifting plates 211 are fixed on two lifting belts 21 directly opposite the lifting hole 11. The lifting plates 211 are L-shaped and can extend into the material box through the lifting hole 11 to receive the anchor bolts. The two parallel lifting plates 211 can stably lift one anchor bolt. The anchor bolt washers on the two lifting plates 211 are located outside the area of ​​the two lifting plates 211. The lifting belts 21 drive the lifting plates 211 to move upward within the lifting hole 11. The support frame 2 is equipped with a detection component 3 in the detection area to remove anchor bolts without washers and correct upside-down anchor bolts. Below the detection area, the support frame 2 is a waste bin 5 to receive the removed anchor bolts.

[0048] After assembly, the anchor bolts fall into the receiving box 1. The anchor bolts in the receiving box 1 are lifted upward by the receiving plate 51 under the rotation of the lifting belt 21, and are inspected by the detection component 3. Anchor bolts without gaskets are rejected and recycled into the waste box 5, and anchor bolts that are placed in the wrong position are corrected. This effectively reduces the scrap rate of anchor bolts in the box and also increases the time required for subsequent anchor bolt shape identification and inspection, thereby improving the efficiency of anchor bolt inspection and the effective rejection rate of defective products.

[0049] refer to Figure 2When the lifting plate 211 moves to the detection area, the anchor bolt abuts against the upper surface of the lifting plate 211. At this time, a positioning hole 2111 is opened in the middle of the upper surface of the lifting plate 211 of the middle lifting belt 21. The positioning hole 2111 is open on the side facing the baffle 212, and the positioning hole 2111 is for the anchor bolt head to be placed inside. The outer wall of the lifting plate 211 for abutting against the anchor bolt is provided with a placement groove 2112 for the anchor bolt to be placed inside. On the lifting belt 21 without the lifting plate 211, a baffle 212 is installed at the position opposite the lifting plate 211, and the anchor bolt can rest on both the baffle 212 and the lifting plate 211 at the same time. When the gasket of the anchor bolt abuts against the baffle 212, the anchor bolt head is located in the positioning hole 2111.

[0050] refer to Figure 2 and Figure 3 The detection component 3 includes a detection roller 31, a vision detector 32, and a tilting plate 33. The detection roller 31 is mounted above the detection area by a support frame 2, and its rotation axis is parallel to the movement direction of the lifting plate 211 in the detection area. There are two detection rollers 31; one is located on the side of the middle lifting belt 21 near the baffle 212, and the other is located on the side of the baffle 212 facing the lifting plate 211, capable of abutting against the circumferential outer wall of the anchor bolt and driving the anchor bolt towards the baffle 212. The circumferential outer wall of the detection roller 31 is made of rubber, and the portion of the circumferential outer wall of the detection roller 31 near the receiving box 1 is rounded off from the end face near the receiving box 1. The tilting plate 33 is rotatably connected to the support frame 2, located at the bottom between the middle lifting belt 21 and the baffle 212, and is located on the side of the detection roller 31 facing the movement direction of the lifting belt 21. The distance between the rotation axis of the tilting plate 33 and the lifting plate 211 is less than the distance between the tilting plate 33 and the baffle 212, and the rotation axis of the tilting plate 33 is parallel to the rotation axis of the detection roller 31. The tilting plate 33 is driven to rotate and reset by a motor. Before rotation, the tilting plate 33 is located below the upper surface of the lifting belt 21, and an identification strip 332 is adhered to the upper surface of the tilting plate 33. A vision detector 32 is mounted on the support frame 2, located directly above the tilting plate 33, and can identify the identification strip 332. In this embodiment, the vision detector 32 is an identifier capable of identifying black or colored striped patterns, and the identification strip 332 is blue in this embodiment. When the vision detector 32 cannot detect the identification strip 332, it can control the motor to drive the tilting plate 33 to rotate and reset via the controller. The lifting belt 21 rotates intermittently under the control of the motor.

[0051] A receiving plate 51 is provided above the receiving box 1, directly opposite the detection roller 31. The receiving plate 51 is inclined upward from the end near the lifting plate 211 to the end near the baffle 212. The lowest point of the upper surface of the receiving plate 51 is lower than the plane of the upper surface of the lifting belt 21. The highest point of the upper surface of the receiving plate 51 is flush with the plane of the upper surface of the baffle 212, so that anchors, whether with or without gaskets, can fall onto the baffle 212 after separating from the receiving plate 51.

[0052] The support frame 2 has two guide plates 22 positioned above the two lifting belts 21 directly opposite the lifting hole 11. The guide plates 22 are located in the detection area and opposite the tilting plate 33. The two guide plates 22 are V-shaped and not connected at the bottom, with the bottom of the two guide plates 22 positioned directly opposite the lifting plate 211. A contact plate 331 is rotatably connected to the end of the tilting plate 33 away from its own rotation axis. The end face of the contact plate 331 facing the anchor bolt is concave and rounded, allowing it to fit against the circumferential outer wall of the anchor bolt. A torsion spring is provided at the rotatable connection of the contact plate 331, which allows the rounded surface of the contact plate to face upwards when the tilting plate 33 returns to its original position. Both ends of the contact plate 331 are folded towards its own rotation axis for a transition.

[0053] After the anchor bolt is brought to the inspection area, it is abutted by the inspection roller 31 and moved towards the baffle 212. If there is no washer on the anchor bolt, the inspection roller 31 will move the anchor bolt towards the baffle 212. Due to the lack of obstruction from the washer, the anchor bolt will continue to move and fall into the waste bin 5 after separating from the lifting plate 211. If there is no nut and the washer is located on the side closer to the baffle 212, the washer will detach from the anchor bolt after abutting with the inspection roller 31. Then, the inspection roller 31 will abut with the anchor bolt and move the anchor bolt into the waste bin 5. If there is no nut and the washer is located on the side farther from the baffle 212, the anchor bolt will separate from the washer during its movement towards the baffle 212. After separating from the lifting plate 211, it will fall into the waste bin 5. If the anchor bolt is normal and the washer is located on the side farther from the baffle 212 (normal position), the inspection roller 31 will abut with the anchor bolt and move the anchor bolt to abut with the washer and the lifting plate 211. If the anchor bolt cannot move further, it will still be in contact with the two lifting plates 211. If the anchor bolt is normal, the gasket is located on the side closer to the baffle 212 (opposite position). The detection roller 31 and the anchor bolt first contact the gasket and drive the anchor bolt to move. Then, the detection roller 31 directly contacts the anchor bolt, causing the anchor bolt to separate from one of the lifting plates 211 and contact the baffle 212. The anchor bolt stops moving when the gasket contacts the baffle 212. The anchor bolt head is located in the positioning hole 2111. When the anchor bolt passes the flip plate 33, it will block the identification strip 332. The visual identifier 32 cannot identify the identification code. The control motor drives the flip plate 33 to rotate, which in turn causes the contact plate 331 to contact the bottom of the anchor bolt and drive the anchor bolt to flip with the positioning hole 2111 as the fulcrum. After the anchor bolt contacts the guide plate 22, it falls onto the two lifting plates 211 along the inclined surface of the guide plate 22, straightening the anchor bolt. Then, the flip plate 33 is reset. This effectively eliminates anchor bolts with missing parts, corrects upside-down anchor bolts, reduces the defect rate during packaging, and also reduces the time spent on subsequent anchor bolt shape identification and inspection, thereby improving the efficiency of finished anchor bolt inspection and the effective rejection rate of defective products.

[0054] refer to Figure 4Two guide rails 12 are fixed to the inner wall of the receiving box 1. The distance between the two guide rails 12 gradually decreases from the bottom to the top, and the shortest distance between the guide rails 12 is greater than the length of the anchor bolt. An adjusting plate 4 is provided at the end of the inspection area of ​​the support frame 2. The adjusting plate 4 is located on the side of the lifting belt 21 furthest from the baffle 212. The distance between the adjusting plate 4 and the lifting belt 21 gradually decreases in the moving direction of the lifting belt 21, and is used to abut against the end of the anchor bolt to align the end of the anchor bolt. In this way, the anchor bolts can be effectively positioned before entering the inspection area, effectively improving the accuracy of subsequent inspections and also ensuring that the ends of the inspected anchor bolts are neatly arranged.

[0055] The implementation principle of the visual inspection system for finished anchor bolts in this application embodiment is as follows: After the assembled anchor bolts fall into the receiving box 1, they are moved upward by the receiving plate 51 and then move to the inspection area. The anchor bolts abut against the inspection roller 31 and move towards the baffle 212 for classification. Anchor bolts without washers or nuts will fall into the waste box 5 after passing through the baffle 212. The correctly positioned anchor bolts are still on the two receiving plates 51. The reversed anchor bolts are stuck at the baffle 212. When passing over the flipping plate 33, the identification strip 332 is blocked. After the visual identifier 32 can no longer identify the identification strip 332, it controls the motor to rotate the flipping plate 33, thereby flipping the anchor bolt to the correct position. Then the flipping plate 33 is reset, thereby effectively rejecting and correcting the anchor bolts, improving the effective rejection rate of defective anchor bolts, effectively reducing the time for subsequent shape recognition and inspection of finished anchor bolts, and improving the efficiency of finished anchor bolt inspection.

[0056] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A visual inspection system for finished anchor bolts, characterized in that: include The receiving box (1) has an opening at the top and is located below the material outlet of the anchor bolt assembly equipment. It is inclined on one side and has two parallel lifting holes (11) from bottom to top. The lifting belt (21) is a chain plate type conveyor belt, consisting of three belts arranged side by side. Two of them are opposite to the lifting hole (11). The lifting belt (21) is set up horizontally after being inclined upward along the lifting hole (11). The lifting belt (21) is a closed-loop conveyor belt. All three lifting belts (21) are driven to rotate by the same motor. The horizontal part of the lifting belt (21) is the detection area. Support frame (2) is used to provide an installation position for the rotating shaft of the lifting belt (21); The lifting plate (211) is installed on two lifting belts (21) directly opposite the lifting hole (11). It can extend into the receiving box (1) to receive the anchor bolts. The anchor bolt gaskets on the two lifting plates (211) are located outside the two lifting plates (211). The lifting belt (21) drives the lifting plate (211) to move upward in the lifting hole (11). A baffle (212) is installed on another conveyor belt (21), positioned opposite the conveyor plate (211), and can abut against the gasket; The support frame (2) has a detection roller (31) above the detection area. The detection roller (31) is driven by a motor and is located on the side of the lifting belt (21) in the middle near the baffle (212). It can abut against the outer wall of the anchor bolt and drive the anchor bolt to move towards the baffle (212). The lifting plate (211) is "L" shaped. When the lifting belt (21) moves to the detection area, the anchor bolt abuts against the lifting plate (211). The flip plate (33) is rotatably connected to the support frame (2), located at the bottom between the middle lifting belt (21) and the baffle (212), and located on the side of the detection roller (31) facing the direction of movement of the lifting belt (21). It is driven by a motor to rotate and reset. The flip plate (33) can drive the upper anchor bolt to rotate to abut against the two lifting plates (211). Identification strip (332) is attached to the flip plate (33); The visual recognition device (32) is installed on the support frame (2) and located directly above the flip plate (33). It can recognize the recognition strip (332). When the recognition strip (332) is not detected, the controller controls the motor to drive the flip plate (33) to rotate and reset.

2. The visual inspection system for finished anchor bolts according to claim 1, characterized in that: The support frame (2) has two guide plates (22) above the position between the two lifting belts (21) directly opposite the lifting hole (11). The guide plates (22) are located in the detection area and are opposite to the position of the flip plate (33). The two guide plates (22) are V-shaped and not connected at the bottom. The position between the bottoms of the two guide plates (22) is directly opposite the lifting plate (211).

3. The visual inspection system for finished anchor bolts according to claim 1, characterized in that: When the lifting belt (21) is in the detection zone, a positioning hole (2111) is provided in the middle of the upper surface of the lifting plate (211) on the lifting belt (21) in the middle position. The positioning hole (2111) is open on the side facing the baffle (212) so that the anchor bolt head can abut inside.

4. The visual inspection system for finished anchor bolts according to claim 1, characterized in that: The end of the flip plate (33) away from its own rotation axis is equipped with a contact plate (331). The end face of the contact plate (331) facing the anchor bolt is set with an arc-shaped concave shape, which can fit against the circumferential outer wall of the anchor bolt.

5. The visual inspection system for finished anchor bolts according to claim 4, characterized in that: The contact plate (331) and the flip plate (33) are rotatably connected, and a torsion spring is provided at the rotatable connection. The torsion spring can make the arc surface of the contact plate face upward when the flip plate (33) is reset.

6. The visual inspection system for finished anchor bolts according to claim 5, characterized in that: The two ends of the contact plate (331) are folded over to transition towards its own rotation axis.

7. The visual inspection system for finished anchor bolts according to claim 1, characterized in that: Two guide rails (12) are fixed on the inner wall of the receiving box (1). The distance between the two guide rails (12) gradually decreases from the bottom to the top. The shortest distance between the guide rails (12) is greater than the length of the anchor bolt.

8. The visual inspection system for finished anchor bolts according to claim 1, characterized in that: The support frame (2) is also equipped with a waste bin (5) in the detection area, which is located directly below the flip plate (33).

Images