A defective product removing structure
By designing a defective product rejection structure in the sheet marking system, and utilizing the cooperation of cylinders and push plates, the automatic rejection of defective products is achieved, solving the problem of inconvenience in manual rejection in existing technologies, and improving operating efficiency and sheet stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU XINAIS PRECISION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-06-23
AI Technical Summary
Existing online marking systems for sheet metal have difficulty automatically removing defective products, resulting in high workload for operators.
A defective product rejection structure was designed, including a conveying bin, a belt conveyor, and a rejection mechanism. By using the cooperation of a cylinder and a pusher plate, defective sheets are automatically pushed into the discharge hopper to achieve automatic rejection, and the stability of the sheets is ensured by a limiting component.
It enables the automatic removal of defective boards, reduces the intensity of manual operation, improves the stability of the board marking process, and avoids misalignment of markings.
Smart Images

Figure CN224389401U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marking technology for sheet metal, specifically a defective product rejection structure. Background Technology
[0002] Board marking refers to the process of marking the surface of boards, typically used to identify product manufacturing information, brand information, anti-counterfeiting labels, etc. There are various marking technologies, including laser engraving, inkjet printing, RFID, and QR code technology, each with its unique principles and applicable scenarios.
[0003] Currently, most marking of boards is done using online marking systems; however, existing technologies still have some shortcomings:
[0004] During the automatic marking process of boards, although the online marking system can quickly control the conveying of boards, the online detection of defective boards, and the automatic marking of conveyed boards, it is often inconvenient to remove defective boards during the marking process. When defective boards are detected, the system usually controls the conveyor to stop, and the operators manually remove the defective boards, which makes the removal of defective boards very inconvenient and the workload of the operators is high. Utility Model Content
[0005] In order to solve the above problems, the purpose of this utility model is to provide a defective product rejection structure.
[0006] To solve the above technical problems, the present invention adopts the following technical solution: a defective product rejection structure, including a conveying bin and a belt conveyor, the belt conveyor being assembled inside the conveying bin, a rejection mechanism being provided on the conveying bin, and a limit component being provided on the rejection mechanism;
[0007] The rejection mechanism includes two fixed baffles, which are symmetrically fixed inside the conveying chamber. The lower surface of the fixed baffles is in contact with the conveyor belt of the belt conveyor. A first slot is provided in the middle of the fixed baffles. A push plate is movably installed in the first slot. Several U-shaped connecting frames are fixed between the two push plates. A second slot is provided on one side of the conveying chamber. The first slot and the second slot are horizontally corresponding.
[0008] A cylinder is mounted on the other side of the conveying chamber. A connecting rod is mounted on the piston end of the cylinder. One end of the connecting rod is fixedly connected to one side of one of the push plates.
[0009] Preferably, the upper surface of the conveying chamber is provided with a plurality of assembly slots, and the assembly slots are provided with a plurality of threaded holes around their perimeter.
[0010] Preferably, a discharge hopper is fixedly provided on one side of the conveying bin, the discharge hopper is inclined on the side away from the conveying bin, and the discharge hopper is located below the second slot.
[0011] Preferably, an L-shaped mounting bracket is fixedly installed on the other side of the conveying chamber, and the fixed end of the cylinder is fixedly installed at one end of the L-shaped mounting bracket.
[0012] Preferably, the limiting assembly includes a first limiting roller and a second limiting roller, and several first and second limiting rollers are provided. One end of the first limiting roller is rotatably mounted with a first L-shaped fixed shaft, and one end of the first L-shaped fixed shaft is fixedly connected to one side of a fixed baffle. One end of the second limiting roller is rotatably mounted with a second L-shaped fixed shaft, and one end of the second L-shaped fixed shaft is fixedly connected to the other side of a push plate.
[0013] Preferably, anti-slip sleeves are fixedly provided on the outer walls of both the first and second limiting rollers.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. In this utility model, the defective board material is pushed into the discharge hopper by the cooperation of the cylinder and the push plate in the defective board material removal mechanism, and then discharged outward from the discharge hopper. This makes it convenient to automatically remove defective board material during the board marking process, thereby effectively improving the convenience of defective board material removal operation and reducing the labor intensity of manual operation.
[0016] 2. In this utility model, the limiting component, through the action of the first limiting roller, the second limiting roller and the anti-slip sleeve in the limiting component, can limit the plate during the marking process, improve the stability of the plate, prevent the plate from deviating, and prevent the marking from being misaligned. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of a defective product rejection structure according to the present invention.
[0019] Figure 2 This is a cross-sectional structural diagram of the conveying bin of this utility model.
[0020] Figure 3 This is a schematic diagram of the composition of the rejection mechanism of this utility model.
[0021] Figure 4 This is a schematic diagram of the separation structure of the push plate and the fixed baffle of this utility model.
[0022] Figure 5 This is a schematic diagram of the connection structure between the online laser marking machine and the detection device and the conveying bin according to an embodiment of this utility model.
[0023] In the diagram: 1. Conveying bin; 11. Assembly slot; 12. Threaded hole; 2. Belt conveyor; 3. Rejection mechanism; 31. Fixed baffle; 32. U-shaped connecting frame; 33. No. 1 slot; 34. Push plate; 35. No. 2 slot; 36. Discharge hopper; 37. L-shaped mounting frame; 38. Cylinder; 39. Connecting rod; 4. Limiting assembly; 41. No. 1 limiting roller; 42. No. 2 limiting roller; 43. No. 1 L-shaped fixed shaft; 431. No. 2 L-shaped fixed shaft; 44. Anti-slip sleeve; 10. Online laser marking machine; 20. Detection device. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Example: Figure 1-5 As shown, this utility model provides a defective product rejection structure, including a conveying bin 1 and a belt conveyor 2. The belt conveyor 2 is assembled inside the conveying bin 1. The upper end face of the conveying bin 1 is provided with two assembly slots 11. Several threaded holes 12 are provided around the assembly slots 11. By setting the assembly slots 11 and the threaded holes 12, when the online laser marking machine 10 and the detection device 20 are respectively placed inside the two assembly slots 11, the online laser marking machine 10 and the detection device 20 can be fixed above the conveying bin 1 by the cooperation of the assembly bolts and the threaded holes 12 (the detection device 20 includes an ultrasonic detector, an X-ray detector, and an infrared wireless detector, etc., which are existing technologies and will not be described in detail here). When the sheet metal is conveyed by the belt conveyor 2, the online laser marking machine 10 and the detection device 20 can be assembled in the assembly slots 11. The conveying bin 1 is provided with a rejection mechanism 3, and the rejection mechanism 3 is provided with a limit component 4.
[0026] The rejection mechanism 3 includes two fixed baffles 31, which are symmetrically fixed inside the conveyor bin 1. The lower surface of the fixed baffles 31 is in contact with the conveyor belt of the belt conveyor 2. With the two fixed baffles 31 positioned above the belt conveyor 2, the material passes between the two fixed baffles 31 when the belt conveyor 2 transports the material. A first slot 33 is provided in the middle of each fixed baffle 31, and a pusher plate 34 is movably installed within the first slot 33. Several U-shaped connecting frames 32 are fixedly installed between the two pusher plates 34. A second slot 35 is provided on one side of the conveyor bin 1. The first slot 33 and the second slot... 35 Horizontal correspondence, by setting the first slot 33, the push plate 34 and the second slot 35, when the detection device 20 detects the defective board, the push plate 34 moves horizontally, pushing the defective board between the two fixed baffles 31. The defective board is discharged outward through the first slot 33 and the second slot 35. A discharge bucket 36 is fixedly set on one side of the conveying chamber 1. The discharge bucket 36 is inclined on the side away from the conveying chamber 1. The discharge bucket 36 is located below the second slot 35. By setting the discharge bucket 36 and the discharge bucket 36 is inclined, when the defective board is pushed to the top of the discharge bucket 36, the defective board falls downward into the discharge bucket 36 under its own weight and slides outward through the discharge bucket 36.
[0027] A cylinder 38 is mounted on the other side of the conveyor hopper 1, and an L-shaped mounting bracket 37 is fixedly installed on the other side of the conveyor hopper 1. The fixed end of the cylinder 38 is fixedly installed at one end of the L-shaped mounting bracket 37. A connecting rod 39 is mounted on the piston end of the cylinder 38. One end of the connecting rod 39 is fixedly connected to one side of one of the push plates 34. By setting up the cylinder 38 and the connecting rod 39, when the cylinder 38 is opened, the piston end of the cylinder 38 can push the push plate 34 to move horizontally through the connecting rod 39. It should be noted that the execution commands of the belt conveyor 2, the online laser marking machine 10, the detection device 20 and the cylinder 38 are controlled by the online marking system for the sheet metal. This is existing technology and will not be described in detail here.
[0028] The limiting assembly 4 includes a first limiting roller 41 and a second limiting roller 42. Several first limiting rollers 41 and second limiting rollers 42 are provided. One end of the first limiting roller 41 is rotatably mounted with a first L-shaped fixed shaft 43, one end of which is fixedly connected to one side of a fixed baffle 31. One end of the second limiting roller 42 is rotatably mounted with a second L-shaped fixed shaft 431, one end of which is fixedly connected to the other side of a push plate 34. By setting the first limiting roller 41, the second limiting roller 42, and the first L-shaped fixed shaft 431... 3. The second L-shaped fixed shaft 431: When the plate passes between the two fixed baffles 31, the first limiting roller 41 and the second limiting roller 42 can limit the plate to prevent it from deviating. At the same time, the first limiting roller 41 can rotate on the first L-shaped fixed shaft 43, and the second limiting roller 42 can rotate on the second L-shaped fixed shaft 431. Anti-slip sleeves 44 are fixedly installed on the outer walls of the first limiting roller 41 and the second limiting roller 42. By setting the anti-slip sleeves 44, the anti-slip sleeves 44 contact the outer side of the plate, improving the stability of the plate.
[0029] Working principle: In the marking operation of the board, the operator first starts the belt conveyor 2, which transports the board to be inspected. The transported board passes between the two fixed baffles 31, and the outer side of the board contacts the outer wall of the anti-slip sleeve 44.
[0030] During this process, the online laser marking machine 10 marks the edge of the upper surface of the board, and the detection device 20 detects the board. If the detected board is a defective product, the defective board is first placed between the two push plates 34 by the belt conveyor 2. Then the conveying operation is stopped, and the cylinder 38 is started. The piston end of the cylinder 38 extends, and the cylinder 38 moves the two push plates 34 horizontally toward one side of the second slot 35 through the connecting rod 39 and the U-shaped connecting frame 32. At this time, the defective board between the two push plates 34 moves synchronously. The defective board gradually moves to the top of the discharge hopper 36. The defective board falls downward into the discharge hopper 36 under its own weight and is discharged outward from the discharge hopper 36. Then the piston end of the cylinder 38 is contracted, and the two push plates 34 move in opposite directions and reset. This conveniently realizes the automatic rejection of defective boards during the board marking process, thereby effectively improving the convenience of defective board rejection operation and reducing the labor intensity of manual operation.
[0031] Meanwhile, during the marking process, multiple first-limit rollers 41, second-limit rollers 42, and anti-slip sleeves on opposite sides of the two fixed baffles 31 and two push plates 34 limit the plate during the marking process, improve the stability of the plate, prevent the plate from deviating, and prevent the marking from being misaligned.
[0032] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A defective product rejection structure, comprising a conveying bin (1) and a belt conveyor (2), wherein the belt conveyor (2) is assembled inside the conveying bin (1), characterized in that: The conveying bin (1) is provided with a rejection mechanism (3), and the rejection mechanism (3) is provided with a limit component (4); The rejection mechanism (3) includes a fixed baffle (31), two fixed baffles (31) are provided, and the two fixed baffles (31) are fixedly arranged in a symmetrical state inside the conveyor bin (1). The lower surface of the fixed baffle (31) is in contact with the conveyor belt of the belt conveyor (2). A first slot (33) is provided in the middle of the fixed baffle (31). A push plate (34) is movably arranged in the first slot (33). Several U-shaped connecting frames (32) are fixedly arranged between the two push plates (34). A second slot (35) is provided on one side of the conveyor bin (1). The first slot (33) and the second slot (35) are horizontally corresponding. A cylinder (38) is mounted on the other side of the conveying chamber (1). A connecting rod (39) is mounted on the piston end of the cylinder (38). One end of the connecting rod (39) is fixedly connected to one side of one of the push plates (34).
2. The defective product rejection structure as described in claim 1, characterized in that, The upper end face of the conveying chamber (1) is provided with a plurality of assembly slots (11), and a plurality of threaded holes (12) are provided around the assembly slots (11).
3. The defective product rejection structure as described in claim 1, characterized in that, A discharge hopper (36) is fixedly installed on one side of the conveying bin (1). The discharge hopper (36) is inclined on the side away from the conveying bin (1) and is located below the second slot (35).
4. The defective product rejection structure as described in claim 1, characterized in that, An L-shaped mounting bracket (37) is fixedly installed on the other side of the conveying chamber (1), and the fixed end of the cylinder (38) is fixedly installed at one end of the L-shaped mounting bracket (37).
5. The defective product rejection structure as described in claim 1, characterized in that, The limiting assembly (4) includes a first limiting roller (41) and a second limiting roller (42). Several first limiting rollers (41) and second limiting rollers (42) are provided. One end of the first limiting roller (41) is rotatably mounted with a first L-shaped fixed shaft (43). One end of the first L-shaped fixed shaft (43) is fixedly connected to one side of the fixed baffle (31). One end of the second limiting roller (42) is rotatably mounted with a second L-shaped fixed shaft (431). One end of the second L-shaped fixed shaft (431) is fixedly connected to the other side of the push plate (34).
6. The defective product rejection structure as described in claim 5, characterized in that, Anti-slip sleeves (44) are fixedly installed on the outer walls of the first limiting roller (41) and the second limiting roller (42).