Nail distributor for detecting long and short nails
Through the measurement system combined with slider and pin-spike cylinder-encoder, the accuracy and stability problems in fastener height measurement are solved, and the accurate measurement of fastener height and the stable operation of the equipment are achieved.
Patent Information
- Application Number
- CN202422010327.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The existing fastener height measurement devices have problems of poor accuracy and low stability, especially in photoelectric detection and mechanical measurement devices, which are susceptible to workpiece surface contamination, background interference and wear of mechanical parts, resulting in inaccurate measurement results and reduced reliability.
The precise measurement system is adopted that combines a slidingly connected slider with a pin-spike cylinder-encoder. The slider drives the workpiece to move. The pin-rod directly contacts the bottom of the workpiece and the encoder recognizes the moving distance, achieving accurate measurement of the fastener height.
It significantly improves measurement accuracy and system stability, reduces error accumulation and background interference, ensures accurate measurement of fastener height and long-term reliability of equipment, and improves production efficiency.
Smart Images
Figure CN223064608U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nail separators, in particular to a long and short nail detection nail separator. Background Art
[0002] In the fastener manufacturing and assembly industry, accurately measuring the height of fasteners such as screws is a key link to ensure product quality and assembly accuracy. However, the existing height measuring devices generally have problems of poor accuracy in practical applications, which seriously restrict the further improvement of production efficiency and product quality.
[0003] First of all, as a common non-contact measurement method, photoelectric detection has been widely used in the height measurement of fasteners. However, there are often large errors in identifying the tip of the screw by photoelectric detection. Due to the complex shape of the screw tip and the possible existence of irregular factors such as burrs and chamfers, the photoelectric sensor is easily interfered when capturing these fine features, resulting in inaccurate tip identification. In addition, when there are contaminants such as oil stains and rust on the screw surface, it will further reduce the identification accuracy of photoelectric detection.
[0004] Secondly, photoelectric detection also faces the challenge that the difference between the workpiece and the background is not large. In a complex production environment, the color, material of the workpiece and the background environment may all affect the detection effect of the photoelectric sensor. If the contrast between the workpiece and the background is not high, the photoelectric sensor is prone to misjudgment during the identification process. For example, when the color of the workpiece is similar to the background, the photoelectric sensor may not be able to accurately distinguish the boundary between the workpiece and the background, resulting in deviation of the measurement result.
[0005] In addition to photoelectric detection, traditional mechanical measuring devices also have problems of poor accuracy. These devices usually rely on the precise fit of mechanical structures and the accurate movement of transmission components to achieve measurement. However, in practical applications, due to the influence of factors such as wear, looseness of mechanical components and temperature changes, it is often difficult to maintain the accuracy of mechanical measuring devices. Especially after long-term operation, the performance of these devices will gradually decline, resulting in reduced stability and reliability of the measurement results.
[0006] Therefore, we propose a long and short nail detection nail separator. Content of the Utility Model
[0007] The applicant of the present utility model aims at the above-mentioned disadvantages in the existing production technology, provides a long and short nail detection nail separator, and realizes the accurate measurement of the height of fasteners through a precise measurement system combining a slider connected by sliding, a push rod, a pressing nail cylinder and an encoder.
[0008] The technical solution adopted by the present utility model is as follows:
[0009] The long and short nail detection nail separator includes:
[0010] A housing is provided with a cavity inside, and a loading station communicating with the cavity is formed on one side of the housing.
[0011] A slider is slidably connected inside the housing, and a receiving cavity for placing a workpiece is arranged on one side of the slider facing the loading station.
[0012] A through hole penetrating the housing vertically is formed on the housing, and the through hole is located on the moving path of the receiving cavity.
[0013] A push rod moving axially is connected to the lower end of the through hole, and a pressing nail cylinder for pressing the workpiece is connected to the upper end of the through hole.
[0014] An encoder is further included, which is connected to the push rod through a transmission rod and is used to identify the moving distance of the push rod.
[0015] Its further feature is that:
[0016] The workpiece includes a large-diameter end portion and a small-diameter rod portion, and the inner diameter of the receiving cavity is between the diameters of the end portion and the rod portion of the workpiece.
[0017] A discharging station is arranged at the end position of the moving path of the receiving cavity on the housing.
[0018] A guiding hole is formed at the upper end of the housing, and one side of the guiding hole deflects towards the side of the housing. The discharging station is on the same straight line as the end of one side of the guiding hole. The end portion of the workpiece extends into the guiding hole, and as the slider moves, the workpiece is separated from the restriction of the receiving cavity through the guiding hole and falls into the discharging station.
[0019] A first telescopic driving structure for driving the slider to move is connected to one side of the housing.
[0020] The housing is connected with a second telescopic driving structure through a bracket. The driving shaft of the second telescopic driving structure is connected to a mounting plate, and the lower end of the push rod is connected to the mounting plate.
[0021] The transmission rod is lapped on the mounting plate and rotates as the mounting plate moves up and down, and the encoder can determine the moving distance of the push rod according to the rotation angle.
[0022] The first telescopic driving structure and the second telescopic driving structure are cylinders, hydraulic rods or electric rods.
[0023] The beneficial effects of the present utility model are as follows:
[0024] The utility model has a compact and reasonable structure and is convenient to operate. By adopting an accurate measurement system combining a sliding block with a sliding connection, a push rod, a pressing nail cylinder and an encoder, the problems of poor tip recognition and background interference in photoelectric detection are effectively overcome, and the accurate measurement of the height of fasteners is realized. The design of the shell and the guiding hole ensures the stable movement and accurate positioning of the workpiece during the measurement process, improving the reliability and stability of the measurement.
[0025] Meanwhile, the utility model also has the following advantages:
[0026] (1) Significantly improve the measurement accuracy: By adopting a measurement mechanism combining a precisely designed push rod and an encoder, the problem of poor screw tip recognition in photoelectric detection is effectively solved. The push rod directly contacts the bottom of the workpiece, reducing the error accumulation in the intermediate links, while the encoder provides high-precision displacement measurement, ensuring the accuracy of the measurement results. This measurement method combining mechanical and electronic methods is more stable than traditional photoelectric detection and is not easily affected by workpiece surface contamination or background interference, thus realizing the accurate measurement of the height of fasteners.
[0027] (2) Enhance the stability and reliability of the system: The sliding connection slider, guiding hole and durable shell structure in the design together constitute a stable and reliable mechanical platform. This design not only ensures the smooth movement and accurate positioning of the workpiece during the measurement process, but also reduces the risk of wear and loosening of mechanical components. At the same time, by adopting a high-performance drive structure and control system, the entire measurement process is more stable and controllable, reducing measurement errors and downtime caused by equipment failures, and improving production efficiency and the long-term reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a schematic structural diagram of the utility model.
[0029] Figure 2 is a three-dimensional structural schematic diagram of the utility model.
[0030] Figure 3 is a cross-sectional view of the utility model.
[0031] Wherein:
[0032] 10, workpiece; 100, shell; 200, slider; 300, first telescopic drive structure; 400, loading station; 500, unloading station; 600, push rod; 700, pressing nail cylinder; 800, encoder;
[0033] 101, guiding hole;
[0034] 201, accommodating cavity;
[0035] 601. Second telescopic drive structure; 602. Bracket; 801. Transmission rod. Detailed implementation manners
[0036] The following combines with the attached drawings to illustrate the detailed implementation manners of the present utility model.
[0037] As Figures 1 - 3 shown, this embodiment discloses a long and short nail detection and sorting device mainly composed of a housing 100, a slider 200, a first telescopic drive structure 300, a second telescopic drive structure 601, a push rod 600, a nail pressing cylinder 700, an encoder 800, and feeding and discharging stations (a feeding station 400 and a discharging station 500) and other key components. These components work together to complete the tasks of length detection and classification of fasteners.
[0038] A cavity is provided inside the housing 100, and a feeding station 400 connected to the cavity is provided on one side of the housing 100; the slider 200 is slidably connected inside the housing 100, and a receiving cavity 201 for placing the workpiece 10 is provided on the side of the slider 200 facing the feeding station 400; a through hole penetrating up and down is provided on the housing 100, and the through hole is located on the moving path of the receiving cavity 201; a push rod 600 moving axially is connected to the lower end of the through hole, and a nail pressing cylinder 700 for pressing the workpiece 10 is connected to the upper end of the through hole; an encoder 800 is further included, which is connected to the push rod 600 through a transmission rod and is used to identify the moving distance of the push rod 600.
[0039] The following combines with Figures 1 - 3 , and specifically elaborates on each component:
[0040] As Figures 1 - 3 shown, the housing 100 in this embodiment serves as the main frame of the entire device. The housing 100 is made of a sturdy and durable material, and a cavity for installing and fixing each component is provided inside. The design of the housing takes into account the compactness of the structure and the convenience of operation, ensuring the stability and reliability of the device during operation. At the same time, necessary through holes, guiding holes 101 and other structures are also provided on the housing 100 to realize the functions of the entry and exit and guiding of the workpiece 10.
[0041] The slider 200 in this embodiment is a key component for carrying the workpiece 10 and driving its movement. It is slidably connected inside the housing 100 and can move along a predetermined trajectory under the drive of the first telescopic drive structure 300. A receiving cavity 201 is provided on the side of the slider 200 facing the feeding station 400. The inner diameter of the receiving cavity is designed to be between the diameters of the end part and the rod part of the workpiece 10 to ensure that the workpiece can be stably placed in the receiving cavity and is not easy to fall off.
[0042] In this embodiment, the first telescopic driving structure 300 serves as the power source for driving the slider 200. The first telescopic driving structure 300 generally selects linear driving devices such as cylinders, hydraulic rods, or electric rods. It is connected to the slider 200 through a mounting seat fixed on the housing 100, and can quickly and accurately push the slider to move along a preset trajectory to a specified position after receiving a control signal. Driven by the first telescopic driving structure 300, the slider 200 can move the workpiece 10 from the loading station 400 to the inspection station and finally to the unloading station 500.
[0043] In this embodiment, the second telescopic driving structure 601 is mainly responsible for driving the up and down movement of the ejector rod 600. It also selects linear driving devices such as cylinders, hydraulic rods, or electric rods, and is fixed on the housing 100 through a bracket 602. The driving shaft of the second telescopic driving structure 601 is connected to a mounting plate, and the ejector rod 600 is installed at the lower end of the mounting plate. When receiving a control signal, the second telescopic driving structure 601 can drive the mounting plate and the ejector rod 600 to move upward to a position in contact with the workpiece 10 and apply a certain pressure to measure the height of the workpiece.
[0044] As Figure 3 shown, in this embodiment, the ejector rod 600 is a key component for measuring the height of the workpiece 10. The ejector rod 600 is installed at the lower end of the mounting plate and moves up and down with the mounting plate. The design of the ejector rod 600 takes into account the contact area and contact force with the bottom of the workpiece 10 to ensure that the height of the workpiece can be accurately measured. At the same time, the ejector rod 600 is also connected to the encoder 800 through a transmission rod 801 to convert the moving distance of the ejector rod into a rotation angle signal recognizable by the encoder.
[0045] As Figure 3 shown, in this embodiment, the nail-pressing cylinder 700 is installed at the upper end of the perforation of the housing 100 and is used to apply pressure to the top of the workpiece 10 at the inspection station to fix the workpiece. When the workpiece 10 moves to the inspection station, the nail-pressing cylinder 700 will quickly respond and extend the piston rod to press the top of the workpiece. This can ensure that the workpiece will not move or deform due to external forces during the measurement process, thus guaranteeing the accuracy of the measurement results.
[0046] The encoder 800 in this embodiment is a sensor that can convert mechanical displacement into an electrical signal (usually a digital signal). In the long and short nail detection and separating device, the encoder 800 is connected to the ejector rod 600 through a transmission rod 801 and is used to detect the moving distance of the ejector rod in real time and convert it into a digital signal that can be processed. The output signal of the encoder 800 can be used to calculate the height value of the workpiece 10 and classify and sort the workpiece accordingly.
[0047] The loading station 400 and the unloading station 500 are respectively located on both sides of the housing 100 and are used for placing and taking out workpieces. The loading station 400 is usually provided with a manual loading port or an automatic loading device to send the fasteners (workpiece 10) to be detected into the equipment one by one. The unloading station 500 is designed with a corresponding receiving device or chute to smoothly export the detected and sorted fasteners from the equipment for subsequent packaging or assembly.
[0048] In this embodiment, the specific working principle is as follows:
[0049] Loading stage: After the equipment is started, the operator or the automatic loading device places the fasteners on the loading station 400 on one side of the housing 100 one by one. At this time, the first telescopic driving structure 300 is in the initial position, that is, the accommodating cavity 201 of the slider 200 is aligned with the loading station 400. As the fasteners are placed into the accommodating cavity 201, the first telescopic driving structure 300 is ready to start working.
[0050] Moving to the detection station: After receiving the control signal, the first telescopic driving structure 300 starts to work, pushing the slider 200 to move along a predetermined trajectory towards the detection station. During the movement, the fasteners in the accommodating cavity 201 also move accordingly. When the slider 200 moves to the detection station, the piston rod of the nail-pressing cylinder 700 extends to apply pressure to the top of the fastener to fix its position. At this time, the fastener is in a state to be detected.
[0051] Height detection stage: After the fastener is fixed, the second telescopic driving structure 601 starts to work, driving the mounting plate and the ejector rod 600 to move upward. The ejector rod 600 gradually approaches the bottom of the fastener and finally contacts it. As the ejector rod 600 continues to rise, it will be stopped by the resistance from the bottom of the fastener. At this time, the transmission rod 801 rotates with the movement of the mounting plate, and the encoder 800 captures this rotation angle and converts it into the moving distance of the ejector rod 600. Since the initial position of the second telescopic driving structure 601 is known (that is, the distance from the ejector rod 600 to the nail-pressing cylinder 700 in the initial state), combined with the moving distance of the ejector rod 600, the control system can accurately calculate the height of the fastener.
[0052] Classification and unloading: After measuring the height of the fastener, the control system classifies the fastener according to the preset threshold. If the height of the fastener meets the standard of a certain category, the control system will issue an instruction to simultaneously release the fastener by the nail-pressing cylinder 700 and the second telescopic driving structure 601. Subsequently, the first telescopic driving structure 300 continues to push the slider 200 towards the unloading station 500. During the movement, the guiding hole 101 plays a key role. It enables the fastener to deflect while breaking free from the restraint of the accommodating cavity 201 and smoothly fall into the receiving device or chute of the unloading station 500.
[0053] Cyclic operation: After the inspection and classification of a fastener are completed, the first telescopic drive structure 300 drives the slider 200 back to the initial position (i.e., the loading station 400) to prepare for receiving the next fastener. At the same time, the receiving device or chute at the unloading station 500 exports the classified fasteners from the equipment for subsequent packaging or assembly. The whole process realizes an automated cyclic operation, greatly improving the efficiency of inspection and classification.
[0054] In summary, the structure of the present utility model is compact and reasonable, and it is convenient to operate. By adopting an accurate measurement system combining a slider connected by sliding with a push rod - nail - pressing cylinder - encoder, the problems of poor tip recognition and background interference in photoelectric detection are effectively overcome, and the accurate measurement of the height of the fastener is realized. The design of the housing and the guiding holes ensures the stable movement and accurate positioning of the workpiece during the measurement process for discharging, improving the reliability and stability of the measurement.
[0055] The above description is an explanation of the present utility model, not a limitation thereof. The scope defined by the present utility model can be seen in the claims. Any form of modification can be made within the protection scope of the present utility model.
Claims
1. Long and short nail detection nail separator, characterized in that Comprising: A housing (100) having a cavity therein, and a loading station (400) communicating with the cavity is provided on one side of the housing (100); A slider (200) slidably connected within the housing (100), and a receiving cavity (201) for placing a workpiece (10) is provided on the side of the slider (200) facing the loading station (400); A through hole penetrating up and down is provided on the housing (100), and the through hole is located on the moving path of the receiving cavity (201); A push rod (600) moving axially is connected to the lower end of the through hole, and a pressing nail cylinder (700) pressing on the workpiece (10) is connected to the upper end of the through hole; An encoder (800) is further included, which is connected to the push rod (600) through a transmission rod and is used to identify the moving distance of the push rod (600).
2. The long and short nail detecting and separating device according to claim 1, characterized in that: The workpiece (10) includes a larger-diameter end portion and a smaller-diameter rod portion, and the inner diameter of the receiving cavity (201) is between the diameters of the end portion and the rod portion of the workpiece (10).
3. The long and short nail detection and nail separating device according to claim 2, wherein: A discharging station (500) is provided at the end position of the moving path of the receiving cavity (201) on the housing (100).
4. The long and short nail detection and separating device according to claim 3, characterized in that: A guiding hole (101) is provided at the upper end of the housing (100), and one side of the guiding hole (101) deflects towards the side of the housing (100). The discharging station (500) is on the same straight line as the end of one side of the guiding hole (101). The end portion of the workpiece (10) extends into the guiding hole (101). As the slider (200) moves, the workpiece (10) is disengaged from the restriction of the receiving cavity (201) through the guiding hole (101) and falls into the discharging station (500).
5. The long and short nail detection and nail separating device according to claim 1, wherein: A first telescopic driving structure (300) for driving the slider (200) to move is connected to one side of the housing (100).
6. The long and short nail detection and separating device according to claim 5, characterized in that: The housing (100) is connected to a second telescopic driving structure (601) through a bracket (602). The driving shaft of the second telescopic driving structure (601) is connected to a mounting plate, and the lower end of the push rod (600) is connected to the mounting plate.
7. The long and short nail detecting and separating device according to claim 6, characterized in that: The transmission rod (801) is lapped on the mounting plate and rotates as the mounting plate moves up and down. The encoder can determine the moving distance of the push rod (600) according to the rotation angle.
8. The long and short nail detection and separating device according to claim 6, characterized in that: The first telescopic driving structure (300) and the second telescopic driving structure (601) are cylinders, hydraulic rods or electric rods.