In-situ automatic detection mechanism for material
By adopting a periodically lifting contact detection structure and a reset spring buffer in the material detection device, the problems of accuracy and stability of the material detection device in the production line are solved, and the detection accuracy and equipment operation reliability are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG HAOTENG INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2026-05-07
- Publication Date
- 2026-06-09
AI Technical Summary
In existing technologies, conveyor belt material detection devices cannot accurately detect materials in automated material conveying production lines. They are also susceptible to environmental interference, resulting in large detection errors and failing to meet the needs of assembly line production.
The contact detection structure with periodic lifting is adopted. By using sensors to detect changes in the position of the material in the material detection device, combined with a return spring, elastic buffering is achieved to avoid rigid impact and improve detection accuracy and stability.
It achieves high accuracy and automation in material in-situ detection, adapts to assembly line production, reduces error rate, and improves equipment stability and service life.
Smart Images
Figure CN224336471U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of detection devices, and in particular to an automatic material in-situ detection mechanism. Background Technology
[0002] Currently, in automated material handling production lines, conveyor belts paired with chutes are the mainstream material conveying structure. During production, materials need to be placed one by one into the chutes of the conveyor belt to ensure the orderly progress of subsequent sorting, processing, and packaging processes. If materials are missed or missing in the chutes, it will cause subsequent equipment to run idle and disrupt the production cycle, not only reducing overall production efficiency but also easily leading to product processing omissions, production line downtime, and increased production losses and maintenance costs.
[0003] Currently, the material detection structures for conveyor belts on the market are relatively simple, mostly using fixed sensors to directly detect materials, which can only achieve the detection of the presence or absence of materials over a large area. This type of detection method has a low error tolerance and is easily affected by environmental factors such as conveyor belt vibration, material deviation, and dust obstruction, making it unsuitable for the working conditions of precise alignment detection of each feeding chute. At the same time, traditional detection structures are difficult to accurately identify material shortages or leaks in individual feeding chute problems, resulting in poor detection accuracy and a high false alarm rate. Utility Model Content
[0004] This application provides an automatic material in-situ detection mechanism, which has the advantages of high detection accuracy, high degree of automation, and suitability for assembly line production.
[0005] The automatic material in-situ detection mechanism provided in this application adopts the following technical solution:
[0006] An automatic material in-place detection mechanism includes a drive assembly and a mounting frame. The drive assembly drives the mounting frame to periodically move up and down. A sensor is mounted on the mounting frame, and a pressure rod is also mounted on the mounting frame. The sensor's detection end faces the pressure rod and is used to detect changes in the pressure rod's height. A return spring is mounted on the pressure rod to keep it in a downward-pressed state. When the pressure rod, driven by the drive assembly, comes into contact with the material surface, and the sensor detects that the pressure rod's height is normal, it is determined that the material has been placed in place. Conversely, when the pressure rod is not in contact with the material surface, and the sensor detects that the pressure rod's height is abnormal, it is determined that the material has not been placed in place, and the sensor triggers an alarm signal.
[0007] Preferably, the end of the pressure rod is provided with a pressing plate, and the diameter of the pressing plate is larger than the diameter of the pressure rod.
[0008] Preferably, a sensing element is provided at the end of the pressure rod away from the pressing plate, the diameter of the sensing element is larger than the diameter of the pressure rod, and the detection end of the sensor is used to detect changes in the position and height of the sensing element.
[0009] Preferably, the drive assembly includes a fixed plate, a slide rail is provided on the fixed plate, a sliding block is slidably disposed on the slide rail, and the mounting bracket is fixedly disposed on the sliding block.
[0010] Preferably, the drive assembly further includes a rotating rod rotatably mounted on a fixed plate, an eccentrically mounted swing plate on the rotating shaft of the rotating rod, a linkage rod rotatably mounted on the swing plate, and the end of the linkage rod away from the swing plate rotatably mounted on a sliding block; the linkage rod is used to push the sliding block to move periodically back and forth along the length of the slide.
[0011] Preferably, the mounting bracket is provided on one side of the pressure rod, and the sensor is detachably mounted on the bracket.
[0012] Preferably, the bracket has a through-hole, the length of which extends along the lifting direction of the pressure rod, and the sensor is adjustablely inserted and fixed inside the through-hole.
[0013] In summary, this application includes at least one of the following beneficial technical effects:
[0014] It adopts a periodic lifting contact detection structure. The pressure bar is precisely pressed down with the drive component to align with a single material feeding trough. It can accurately distinguish between the conditions of material presence and absence in the material feeding trough. It is specifically adapted to the production needs of placing materials one by one and effectively solves the problems of traditional fixed infrared detection being susceptible to environmental interference, inaccurate detection alignment, and missed detection and false detection.
[0015] By configuring a return spring on the pressure bar, elastic buffering can be achieved when the pressure bar presses down to contact the material or conveyor belt, avoiding rigid impact that could cause deformation of the pressure bar and wear on the conveyor belt. At the same time, it can automatically reset after the test is completed, ensuring stable and smooth periodic lifting and lowering of the pressure bar, reducing equipment jamming and failure probability, and greatly improving the stability and service life of the equipment.
[0016] It has high detection accuracy and a high degree of automation, making it suitable for assembly line production. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;
[0018] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of this application.
[0019] Explanation of reference numerals in the attached drawings: 1. Drive assembly; 10. Fixing plate; 11. Slide rail; 12. Sliding block; 13. Rotating rod; 14. Swing plate; 15. Linkage rod; 2. Mounting bracket; 3. Sensor; 4. Pressure rod; 5. Pressing plate; 6. Sensing plate; 7. Bracket; 70. Waist-shaped hole. Detailed Implementation
[0020] The present application will be further described in detail below with reference to the accompanying drawings.
[0021] This application discloses an automatic material in-situ detection mechanism.
[0022] Reference Figure 1 , Figure 2 The automatic material in-situ detection mechanism includes a drive assembly 1 and a mounting frame 2. The drive assembly 1 drives the mounting frame 2 to periodically move up and down. A bracket 7 is detachably mounted on the top of the mounting frame 2 using bolts or other fasteners. A slotted hole 70 passes through the bracket 7, and a sensor 3 is detachably inserted into the slotted hole 70. The sensor 3 is adjustablely fixed within the slotted hole 70 using bolts or other fasteners. Specifically, the sensor 3 can be a photoelectric sensor, such as a diffuse reflection photoelectric switch. A diffuse reflection photoelectric switch integrates both the transmitter and receiver, with both ends integrated into the same probe, eliminating the need for an external reflector or pairing.
[0023] like Figure 1 , Figure 2 As shown, a pressure rod 4 is vertically mounted on the mounting bracket 2, located on one side of the detection end of the sensor 3. The detection end of the sensor 3 is used to detect changes in the height of the pressure rod 4. A return spring is fitted onto the pressure rod 4, and the return spring extends and retracts along the lifting direction of the pressure rod 4. One end of the return spring abuts against the outer wall of the mounting bracket 2, and the other end of the return spring is used to push the pressure rod 4 to maintain a downward pressure state.
[0024] like Figure 1 , Figure 2 As shown, when the drive assembly 1 moves the pressure rod 4 downwards until the bottom of the pressure rod 4 abuts against the surface of the material, due to the thickness of the material, the pressure rod 4 will undergo relative displacement with the continuously moving mounting frame 2 under the obstruction of the material. Finally, the top of the pressure rod 4 will gradually approach the detection end of the sensor 3 above. When the top of the pressure rod 4 rises to be directly opposite the detection end of the sensor 3, the detection end of the sensor 3 detects that the top height of the pressure rod 4 is normal, thus determining that the material has been placed in place. Subsequently, the drive assembly 1 will move the pressure rod 4 upwards to reset. During this process, the pressure rod 4 will spring back downwards under the force of the reset spring to prepare for a new round of detection.
[0025] Conversely, when the bottom of the pressure rod 4 fails to contact the surface of the material below, the pressure rod 4 will not have relative displacement with the continuously moving mounting frame 2. At this time, the top of the pressure rod 4 will not be able to rise to face the detection end of the sensor 3. Therefore, the sensor 3 will detect that the height position of the pressure rod 4 is abnormal, and then determine that the material is not placed in place. Subsequently, the sensor 3 will trigger an alarm signal.
[0026] During detection, when the top of the pressure rod 4 enters the detection range of the sensor 3's transmitter, the light emitted by the sensor 3 will be scattered by the barrier at the top of the pressure rod 4. A portion of the reflected light will return to the receiving window of the photoelectric switch. The receiving element senses the reflected light, converts it into an electrical signal, and after comparison and judgment by the internal circuit, if the set light intensity threshold is reached, the sensor 3 outputs a material arrival signal. Conversely, if the infrared light emitted by the sensor 3's transmitter is directly projected into an open space and no effective reflected light returns to the receiving end, the receiving element will have no signal, and the sensor 3 will trigger an alarm.
[0027] like Figure 1 , Figure 2 As shown, a pressing plate 5 is coaxially fixedly installed at the lower end of the pressure rod 4. The diameter of the pressing plate 5 is larger than the diameter of the pressure rod 4. The pressing plate 5 is used to directly contact the material surface. The pressing plate 5 further increases the contact area between the lower end of the pressure rod 4 and the material surface, thereby further improving the detection accuracy and achieving accurate judgment of the material.
[0028] like Figure 1 , Figure 2 As shown, a sensing element 6 is coaxially fixed on the side wall of the pressure rod 4 away from the pressure plate 5. The diameter of the sensing element 6 is larger than the diameter of the pressure rod 4. The detection end of the sensor 3 is used to detect changes in the position and height of the sensing element 6. The sensing element 6 can further reduce the distance between itself and the detection end of the sensor 3, thereby further improving the detection accuracy of the sensor 3 and reducing the error rate.
[0029] like Figure 1 , Figure 2 As shown, the drive assembly 1 includes a fixed plate 10, on which a vertically placed slide rail 11 is fixedly mounted. A sliding block 12 is slidably disposed on the slide rail 11, and one end of the mounting bracket 2 is fixedly disposed on the sliding block 12. The mounting bracket 2 slides synchronously along the length direction of the slide rail 11, following the sliding block 12.
[0030] like Figure 1 , Figure 2As shown, the drive assembly 1 also includes a rotating rod 13 rotatably mounted on the fixed plate 10. The rotating rod 13 is driven to rotate by an external motor, and a swing plate 14 is eccentrically fixed on the rotation axis of the rotating rod 13. A linkage rod 15 is rotatably mounted on the swing plate 14, with one end of the linkage rod 15 away from the swing plate 14 rotatably mounted on the sliding block 12. The linkage rod 15 is used to push the sliding block 12 to move periodically back and forth along the length of the slide rail 11. The mounting frame 2 is moved synchronously by the sliding block 12.
[0031] The implementation principle is as follows: When the drive assembly 1 moves the pressure rod 4 downwards until the bottom of the pressure rod 4 abuts against the surface of the material, due to the thickness of the material, the pressure rod 4 will undergo relative displacement with the continuously moving mounting frame 2 under the obstruction of the material. Finally, the top of the pressure rod 4 will gradually approach the detection end of the sensor 3 above. When the top of the pressure rod 4 rises to be directly opposite the detection end of the sensor 3, the sensor 3 detects that the top height of the pressure rod 4 is normal, thus determining that the material has been placed in place. Subsequently, the drive assembly 1 will move the pressure rod 4 upwards to reset. During this process, the pressure rod 4 will spring back downwards under the force of the reset spring to prepare for a new round of detection.
[0032] Conversely, when the bottom of the pressure rod 4 fails to contact the surface of the material below, the pressure rod 4 will not have relative displacement with the continuously moving mounting frame 2. At this time, the top of the pressure rod 4 will not be able to rise to face the detection end of the sensor 3. Therefore, the sensor 3 will detect that the height position of the pressure rod 4 is abnormal, and then determine that the material is not placed in place. Subsequently, the sensor 3 will trigger an alarm signal.
[0033] The contact detection structure with periodic lifting is adopted. The pressure rod 4 is precisely pressed down with the drive component 1 to align with a single material feeding trough. It can accurately distinguish between the conditions of material presence and absence in the material feeding trough, and is specifically adapted to the production needs of material placement one by one. It effectively solves the problems of traditional fixed infrared detection being susceptible to environmental interference, inaccurate detection alignment, and missed detection and false detection.
[0034] By configuring a reset spring on the pressure bar 4, elastic buffering can be achieved when the pressure bar 4 presses down to contact the material or conveyor belt, avoiding deformation of the pressure bar 4 and wear of the conveyor belt caused by rigid impact. At the same time, it can automatically reset after the detection is completed, ensuring that the periodic lifting and lowering action of the pressure bar 4 is stable and smooth, reducing the probability of equipment jamming and failure, and greatly improving the stability and service life of the equipment.
[0035] The above are all 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. An automatic material in-situ detection mechanism, characterized in that: The device includes a drive assembly (1) and a mounting frame (2). The drive assembly (1) is used to drive the mounting frame (2) to periodically move up and down. A sensor (3) is provided on the mounting frame (2), and a pressure rod (4) is also provided on the mounting frame (2). The detection end of the sensor (3) faces the pressure rod (4) and is used to detect the position height change of the pressure rod (4). A reset spring is provided on the pressure rod (4), and the reset spring is used to push the pressure rod (4) to keep it in a downward state. When the pressure rod (4) is driven by the drive assembly (1) and comes into contact with the material surface, the sensor (3) detects that the height position of the pressure rod (4) is normal, and then determines that the current material has been placed in place. Conversely, when the pressure rod (4) does not come into contact with the material surface, the sensor (3) detects that the height position of the pressure rod (4) is abnormal, and then determines that the current material has not been placed in place. At this time, the sensor (3) triggers an alarm signal.
2. The automatic material in-situ detection mechanism according to claim 1, characterized in that: The end of the pressure rod (4) is provided with a pressing plate (5), the diameter of which is larger than the diameter of the pressure rod (4).
3. The automatic material in-situ detection mechanism according to claim 2, characterized in that: The end of the pressure rod (4) away from the pressure plate (5) is provided with a sensing plate (6). The diameter of the sensing plate (6) is larger than the diameter of the pressure rod (4). The detection end of the sensor (3) is used to detect the position and height change of the sensing plate (6).
4. The automatic material in-situ detection mechanism according to claim 1, characterized in that: The drive assembly (1) includes a fixed plate (10), a slide rail (11) is provided on the fixed plate (10), a sliding block (12) is slidably provided on the slide rail (11), and the mounting bracket (2) is fixedly provided on the sliding block (12).
5. The automatic material in-situ detection mechanism according to claim 4, characterized in that: The drive assembly (1) further includes a rotating rod (13) rotatably mounted on a fixed plate (10). A swing plate (14) is eccentrically mounted on the rotation axis of the rotating rod (13). A linkage rod (15) is rotatably mounted on the swing plate (14). One end of the linkage rod (15) away from the swing plate (14) is rotatably mounted on a sliding block (12). The linkage rod (15) is used to push the sliding block (12) to move back and forth periodically along the length of the slide (11).
6. The automatic material in-situ detection mechanism according to claim 1, characterized in that: The mounting bracket (2) is provided with a bracket (7) located on one side of the pressure rod (4), and the sensor (3) is detachably mounted on the bracket (7).
7. The automatic material in-situ detection mechanism according to claim 6, characterized in that: The bracket (7) has a through-hole (70), the length of which extends along the lifting direction of the pressure rod (4), and the sensor (3) is adjustable and fixed inside the through-hole (70).