A feeding device and a loading / unloading machine
By integrating a detection component into the feeding device to monitor the pusher's thrust value in real time and compare it with a preset threshold, closed-loop control is achieved, solving the problem of poor compatibility of traditional feeding devices and improving the safety and reliability of the feeding process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 盛欣科智能装备(江苏)有限公司
- Filing Date
- 2025-07-30
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional feeding devices have low overload protection compatibility and cannot adapt to the feeding needs of products of different weights, resulting in a high risk of product damage during the feeding process.
The system employs a detection component to monitor the thrust value of the push rod in real time and compares it with a preset thrust threshold. The drive component is then stopped via closed-loop control, which is integrated into the power transmission path of the push rod assembly to achieve adaptive thrust protection for materials of different specifications.
It effectively avoids material damage or malfunction of the loading and unloading machine caused by excessive thrust, improves the safety and reliability of the pushing process, and adapts to the pushing needs of different materials.
Smart Images
Figure CN224278707U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automated production technology, and in particular to a material pushing device and a loading and unloading machine. Background Technology
[0002] Currently, the semiconductor and 3C industries use cassettes for product turnover. When using cassettes, the products inside need to be pushed into the automated production line. This requires a pusher device to eject the products from the cassette. In actual production, when products get stuck, the pusher device will continuously apply pushing force, which can easily lead to product damage.
[0003] In existing technologies, traditional feeding devices use spring-loaded alarms for overload protection. However, due to the fixed spring constant, the compatibility of overload protection is low, making it difficult to adapt to the feeding requirements of products of different weights. Furthermore, because the specifications of the material boxes and products used in the semiconductor and 3C industries vary significantly, the optimal feeding force required for different products also differs. Traditional feeding devices cannot precisely adjust the feeding force according to product characteristics, further increasing the risk of product damage during the feeding process. Utility Model Content
[0004] The purpose of this invention is to provide a pushing device and a loading / unloading machine to solve the problems of low compatibility of overload protection and inability to adapt to different material pushing forces in traditional pushing devices, thereby improving pushing safety and reducing the risk of material damage during the pushing process.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A feeding device includes a base, a drive assembly, a push rod assembly, and a detection assembly. The drive assembly is fixed to the base and is drively connected to the push rod assembly. The drive assembly can drive the push rod assembly to move along a first direction and push the material. The push rod assembly includes a push rod and a connector. One end of the connector is connected to the output end of the drive assembly, and the other end of the connector is connected to the push rod through the detection assembly. The detection assembly is used to preset the thrust threshold for different products and detect the thrust value of the push rod in real time. The detection assembly is electrically connected to the drive assembly so that the drive assembly stops driving when the thrust value is greater than the thrust threshold.
[0007] As an alternative to the feeding device, the feeding device further includes a first guide assembly, which includes a guide rail and a slider. The guide rail is fixedly connected to the base along the first direction, and the slider is fixedly connected to the connector and slides with the guide rail.
[0008] As an alternative to the feeding device, the feeding device further includes a second guide assembly, which includes two bearings spaced apart, with the push rod located between the two bearings. The inner ring of the bearing is fixedly connected to the base, and the outer ring of the bearing rolls against the push rod.
[0009] As an alternative to the feeding device, the push rod is provided with guide grooves on both sides of the bearing, and any one of the outer rings of the bearing can abut against the side wall corresponding to the guide groove.
[0010] As an alternative to the feeding device, both bearings and the contact surfaces of the push rod are provided with an adhesive coating.
[0011] As an alternative to the feeding device, the feeding device further includes a first limiting component, which includes a first light-shielding plate and a first limiting switch. One of the first light-shielding plate and the first limiting switch is fixedly connected to the end of the base near the push rod, and the other of the two is connected to the connecting member.
[0012] As an alternative to the feeding device, the feeding device further includes a second limiting component, which includes a second light-shielding plate and a second limiting switch. One of the second light-shielding plate and the second limiting switch is fixedly connected to the end of the base away from the push rod, and the other of the two is connected to the connecting member.
[0013] As an alternative to the feeding device, the detection component includes:
[0014] The sensor, whose two ends are connected to the connector and the push rod respectively, is used to detect the thrust value in real time;
[0015] The signal transmitting end is used to receive and transmit the first signal generated by the sensor;
[0016] The control terminal is electrically connected to the signal transmitter. The control terminal can monitor the data of the sensor in real time and send out a second signal. The drive component can receive the second signal.
[0017] As an alternative to the feeding device, the drive assembly includes a motor, two pulleys and a timing belt. The motor is fixedly connected to the base, the timing belt is wound around the two pulleys and tensioned by the two pulleys, and the rotation of one of the pulleys connected to the output end of the motor can drive the timing belt to move. The connecting member is fixed to the timing belt.
[0018] A loading and unloading machine is used to transfer materials in a hopper. The loading and unloading machine includes a hopper transfer component, a material transfer component, and a pushing device.
[0019] Beneficial effects:
[0020] This invention provides a pushing device and a loading / unloading machine. By setting a detection component that can preset different material pushing force thresholds and integrating it into the power transmission path of the push rod assembly, adaptive pushing force protection for materials of different specifications is achieved. This solves the problems of poor overload protection compatibility and inability to flexibly adapt to the pushing force requirements of different materials in traditional pushing devices. The detection component monitors the actual pushing force value of the push rod in real time and compares it with the preset pushing force threshold. Through electrical connection with the drive assembly, a closed-loop control is formed. When the pushing force exceeds the pushing force threshold, the drive assembly can be stopped in time to cut off the power output, effectively avoiding material damage or loading / unloading machine failure caused by excessive pushing force, and significantly improving the safety and reliability of the pushing process. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the pusher device provided in an embodiment of the present invention;
[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0023] In the picture:
[0024] 1. Base;
[0025] 2. Drive assembly; 21. Motor; 22. Pulley; 23. Synchronous belt;
[0026] 3. Push rod assembly; 31. Push rod; 32. Connector;
[0027] 41. Sensors;
[0028] 5. First guide assembly; 51. Guide rail; 52. Slider;
[0029] 6. Second guide assembly; 61. Bearing;
[0030] 7. First limiting component; 71. First light-shielding plate; 72. First limit switch;
[0031] 8. Second limit component; 81. Second light shield; 82. Second limit switch. Detailed Implementation
[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0033] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part of the device. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0035] In the description of this embodiment, the terms "upper" and "lower," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0036] This embodiment provides a loading and unloading machine for transferring materials (not shown) from a hopper (not shown). The loading and unloading machine includes a hopper transfer assembly (not shown), a material transfer assembly (not shown), and a pushing device. In use, when the pushing device is applied to the loading machine, the hopper transfer assembly transfers the hopper to a preset station, the pushing device pushes the material in the hopper onto the material transfer assembly, and the material transfer assembly conveys the material to the next station. When the pushing device is applied to the unloading machine, the hopper transfer assembly transfers the hopper to a preset station, and the pushing device pushes the material on the material transfer assembly into the hopper.
[0037] Optionally, the material box conveying assembly and the material conveying assembly are one of the following: belt conveying assembly, chain conveying assembly, or roller conveying assembly. The belt conveying assembly consists of a drive motor, a drive roller, a driven roller, and an annular belt, with the material box placed on the belt surface for conveying. The chain conveying assembly uses a metal or plastic chain plate as a carrier and drives the material box through a sprocket. The roller conveying assembly consists of a motor and multiple sets of rollers, with the motor driving the rollers to rotate and actively conveying the material box, resulting in high conveying efficiency and suitability for large-volume continuous material box conveying.
[0038] Optionally, the materials cover core products in the semiconductor and 3C industries: in the semiconductor field, these include wafers, chips, packaging substrates, and optoelectronic devices (such as laser chips); in the 3C industry, they include precision electronic components such as printed circuit boards, displays, capacitors, and resistors, as well as components such as mobile phone and computer casings.
[0039] like Figure 1 and Figure 2 As shown, the feeding device includes a base 1, a drive assembly 2, a push rod assembly 3, and a detection assembly. The drive assembly 2 is fixed to the base 1 and is connected to the push rod assembly 3 by transmission. The drive assembly 2 can drive the push rod assembly 3 to move along a first direction and push the material. The push rod assembly 3 includes a push rod 31 and a connector 32. One end of the connector 32 is connected to the output end of the drive assembly 2, and the other end of the connector 32 is connected to the push rod 31 through the detection assembly. The detection assembly is used to preset the thrust threshold for different products and detect the thrust value of the push rod 31 in real time. The detection assembly is electrically connected to the drive assembly 2 so that the drive assembly 2 stops transmission when the thrust value is greater than the thrust threshold.
[0040] By setting up a detection component with preset thrust thresholds for different materials and integrating it into the power transmission path of the push rod assembly 3, adaptive thrust protection for materials of different specifications is achieved. This solves the problems of poor compatibility of overload protection and inability to flexibly adapt to the thrust requirements of different materials in traditional pushing devices. The detection component monitors the actual thrust value of the push rod 31 in real time and compares it with the preset thrust threshold. Through electrical connection with the drive assembly 2, a closed-loop control is formed. When the thrust exceeds the thrust threshold, the drive assembly 2 can be stopped in time to cut off the power output, effectively avoiding material damage or malfunction of the loading and unloading machine caused by excessive thrust, and significantly improving the safety and reliability of the pushing process.
[0041] like Figure 1 As shown, the detection component includes a sensor 41, a signal transmitter (not shown), and a control terminal (not shown). The two ends of the sensor 41 are connected to a connector 32 and a push rod 31, respectively. The sensor 41 is used to detect the thrust value in real time. The signal transmitter receives and transmits the first signal generated by the sensor 41. The control terminal is electrically connected to the signal transmitter and can monitor the data from the sensor 41 in real time and send a second signal. The drive component 2 can receive the second signal. The detection component directly acquires the thrust data of the push rod 31 through the sensor 41 and transmits it quickly and stably to the control terminal via the signal transmitter. The control terminal analyzes the signal in real time and, based on a preset threshold or control algorithm, quickly sends a command to the drive component 2 when the thrust is abnormal and exceeds the thrust threshold, achieving precise closed-loop control. This design allows for flexible adjustment of control parameters, is compatible with the push requirements of different products in the semiconductor and 3C industries, and offers faster response and stronger adaptability.
[0042] In this embodiment, the first signal is the raw detection signal (analog / digital) generated by the thrust of the push rod 31 collected by the sensor 41, and the second signal is the drive command (such as PWM pulse or relay signal) output by the control terminal after processing the first signal. The two form a "detection-control" closed loop, with the first signal reflecting the current state and the second signal determining the subsequent actions, realizing rapid response and precise control when the thrust of the push rod 31 is abnormal.
[0043] Optionally, sensor 41 can be a strain gauge force sensor or a pressure sensor for directly measuring the thrust of push rod 31; the signal transmitting end includes a signal conditioning module for amplification and filtering of signals, a data acquisition card for analog-to-digital conversion, or a wireless transmitting module such as Bluetooth / Wi-Fi; the control end can adopt industrial-grade stable control of PLC, low-cost customization of single-chip microcomputer development board, or high-performance data processing of industrial control computer, and the three work together to realize thrust detection and closed-loop control.
[0044] like Figure 1 and Figure 2 As shown, the feeding device also includes a first guide assembly 5, which includes a guide rail 51 and a slider 52. The guide rail 51 is fixedly connected to the base 1 along a first direction, and the slider 52 is fixedly connected to the connector 32. The slider 52 and the guide rail 51 are slidably engaged. The first guide assembly 5 provides precise guidance and stable support for the movement of the push rod assembly 3 through the cooperation of the guide rail 51 and the slider 52. The guide rail 51 is fixed to the base 1 along the first direction, which limits the movement path of the slider 52 and the connector 32, effectively preventing the push rod 31 from deviating due to lateral forces or installation errors, and ensuring the accuracy of the material feeding direction. In addition, the first guide assembly 5 can withstand a certain lateral load, enhancing the stability of the push rod assembly 3 during the material feeding process. It is especially suitable for feeding precision materials such as semiconductors and 3C products with high positioning accuracy requirements. Compared with a non-guided structure, the feeding error can be controlled within a smaller range, greatly improving the reliability of feeding and the material qualification rate.
[0045] like Figure 1 and Figure 2As shown, the feeding device also includes a second guide assembly 6, which includes two bearings 61 spaced apart. The push rod 31 is located between the two bearings 61. The inner ring of the bearing 61 is fixedly connected to the base 1, and the outer ring of the bearing 61 rolls against the push rod 31. The second guide assembly 6, through its double bearing 61 structure, provides stable lateral support and low-friction motion constraint for the push rod 31. The two spaced bearings 61 effectively suppress radial sway or offset during the feeding process, ensuring that the push rod 31 moves linearly along the first direction and improving the positioning accuracy of material feeding. The inner ring of the bearing 61 is rigidly fixed to the base 1, and the outer ring rolls against the surface of the push rod 31. Compared to sliding friction, rolling contact significantly reduces motion resistance and wear, extending the service life of the push rod 31. Optionally, the two bearings 61 are spaced apart along a vertical direction perpendicular to the first direction, with one bearing 61 located above the push rod 31 and the other bearing 61 located below the push rod 31. In other embodiments, the second guide assembly 6 includes a single bearing 61 positioned below the push rod 31 along a vertical direction perpendicular to the first direction.
[0046] In this embodiment, guide grooves are provided on both sides of the push rod 31 corresponding to the bearing 61, allowing the outer ring of any bearing 61 to abut against the sidewall of the corresponding guide groove. The cooperation between the guide groove and the outer ring of the bearing 61 further enhances the guiding accuracy and operational stability of the pushing device. The sidewall of the guide groove provides a clear constraint boundary for the outer ring of the bearing 61, limiting the displacement freedom of the push rod 31 in the horizontal and vertical directions perpendicular to the first direction. This ensures that the push rod 31 always moves along a preset trajectory during the pushing process, minimizing positioning errors, which is particularly suitable for materials requiring high pushing accuracy. Simultaneously, the rolling contact between the bearing 61 and the sidewall of the guide groove converts sliding friction into rolling friction, significantly reducing motion resistance, minimizing component wear, and extending the equipment's service life.
[0047] In this embodiment, the contact surfaces of both bearings 61 and push rod 31 are provided with an adhesive coating (not shown in the figure). The adhesive coating has good elastic cushioning properties, which can effectively absorb the vibration and impact generated during the movement of push rod 31, avoid wear and noise caused by rigid contact, and extend the service life of bearings 61 and push rod 31. Commonly used adhesive coating materials can be silicone, polyurethane, or nitrile rubber. Silicone is resistant to high temperature and has good insulation; polyurethane is wear-resistant and impact-resistant; nitrile rubber has good oil resistance. The choice can be made according to the actual working conditions, material characteristics, and cost.
[0048] like Figure 1 and Figure 2As shown, the feeding device also includes a first limiting component 7, which includes a first light-shielding plate 71 and a first limit switch 72. The first limit switch 72 is fixedly connected to the end of the base 1 near the push rod 31, and the first light-shielding plate 71 is connected to the connecting member 32. When the push rod 31 pushes the material, the first light-shielding plate 71 connected to the connecting member 32 moves accordingly, and the first limit switch 72 transmits a position signal to the control terminal. When the push rod 31 reaches a preset position, such as the end of the push stroke, the control terminal can immediately send a command to stop the drive component 2, avoiding the push rod 31 from overtraveling and causing material collision damage. In addition, this non-contact limiting design reduces wear and failure risk compared to traditional mechanical limiting structures, and improves limiting accuracy and system reliability. In other embodiments, the first light-shielding plate 71 is fixedly connected to the end of the base 1 near the push rod 31, and the first limit switch 72 is connected to the connecting member 32.
[0049] like Figure 1 and Figure 2 As shown, the feeding device also includes a second limiting component 8, which includes a second light-shielding plate 81 and a second limit switch 82. The second limit switch 82 is fixedly connected to the end of the base 1 away from the push rod 31, and the second light-shielding plate 81 is connected to the connecting member 32. When the push rod 31 returns after completing the material feeding, the second light-shielding plate 81 connected to the connecting member 32 moves synchronously. When it reaches the preset return limit position, the second light-shielding plate 81 triggers the second limit switch 82 to act, and the second limit switch 82 immediately feeds back the position signal to the control terminal. After receiving the signal, the control terminal can accurately control the drive component 2 to stop operating, preventing the push rod 31 from colliding with the base 1 due to excessive return and avoiding damage to the mechanical structure. At the same time, this component also ensures the consistency of the push rod 31's reset position each time, providing a stable reference for the next feeding, effectively improving the cyclic operation accuracy and stability of the feeding device, and ensuring the reliability of continuous production. In other embodiments, the second light-shielding plate 81 is fixedly connected to the end of the base 1 away from the push rod 31, and the second limit switch 82 is connected to the connector 32.
[0050] like Figure 1As shown, the drive assembly 2 includes a motor 21, two pulleys 22, and a synchronous belt 23. The motor 21 is fixedly connected to the base 1. The synchronous belt 23 is wound around the two pulleys 22 and tensioned by them. Rotation of one of the pulleys 22, which is connected to the output end of the motor 21, can drive the synchronous belt 23. The connecting member 32 is fixed to the synchronous belt 23. The motor 21, as the power source, is rigidly fixed to the base 1 to ensure stability during operation. The output end of the motor 21 directly drives the driving pulley 22. Through the transmission between the synchronous belt 23 and the driven pulley 22, the rotational motion is converted into the linear motion of the connecting member 32. The tooth profile on the surface of the synchronous belt 23 precisely matches the groove of the pulley 22, avoiding slippage and achieving high transmission accuracy. This allows for precise control of the pushing distance and speed of the push rod 31. Furthermore, the double pulley 22 structure can be flexibly adapted to different stroke requirements by adjusting the center distance, and the tension of the synchronous belt 23 is adjustable, effectively compensating for wear after long-term operation, ensuring the reliability of the transmission system, and significantly improving the working efficiency and service life of the pushing device.
[0051] Optionally, in addition to synchronous belt 23 transmission, drive assembly 2 can also adopt screw drive (high precision, high load), gear and rack drive (high speed and high thrust), linear motor 21 drive (backlash-free, nanometer-level precision), chain drive (high load capacity, suitable for long stroke), and can be flexibly selected according to the requirements of precision, load, environment, etc.
[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A pusher device, characterized in that, The device includes a base (1), a drive assembly (2), a push rod assembly (3), and a detection assembly. The drive assembly (2) is fixed to the base (1) and is connected to the push rod assembly (3) in a transmission manner. The drive assembly (2) can drive the push rod assembly (3) to move in a first direction and push the material. The push rod assembly (3) includes a push rod (31) and a connector (32). One end of the connector (32) is connected to the output end of the drive assembly (2), and the other end of the connector (32) is connected to the push rod (31) through the detection assembly. The detection assembly is used to preset the thrust threshold of different products and detect the thrust value of the push rod (31) in real time. The detection assembly is electrically connected to the drive assembly (2) so that the drive assembly (2) stops transmission when the thrust value is greater than the thrust threshold.
2. The pusher device of claim 1, wherein, The feeding device further includes a first guide component (5), which includes a guide rail (51) and a slider (52). The guide rail (51) is fixedly connected to the base (1) along the first direction, and the slider (52) is fixedly connected to the connector (32). The slider (52) is slidably engaged with the guide rail (51).
3. The pusher device of claim 1, wherein, The feeding device further includes a second guide assembly (6), which includes two bearings (61) spaced apart. The push rod (31) is located between the two bearings (61). The inner ring of the bearing (61) is fixedly connected to the base (1), and the outer ring of the bearing (61) rolls against the push rod (31).
4. The pusher device of claim 3, wherein, The push rod (31) is provided with guide grooves on both sides of the bearing (61), and the outer ring of any bearing (61) can abut against the side wall of the corresponding guide groove.
5. The pusher device of claim 3, wherein, The contact surfaces of the two bearings (61) and the push rod (31) are all provided with an adhesive coating.
6. The pusher device of claim 1, wherein, The feeding device further includes a first limiting component (7), which includes a first light-shielding plate (71) and a first limiting switch (72). One of the first light-shielding plate (71) and the first limiting switch (72) is fixedly connected to one end of the base (1) near the push rod (31), and the other of the two is connected to the connector (32).
7. The pusher device of claim 1, wherein, The feeding device further includes a second limiting component (8), which includes a second light shield (81) and a second limit switch (82). One of the second light shield (81) and the second limit switch (82) is fixedly connected to the end of the base (1) away from the push rod (31), and the other of the two is connected to the connector (32).
8. The pusher device of claim 1, wherein, The detection component includes: Sensor (41), the two ends of which are respectively connected to the connector (32) and the push rod (31), the sensor (41) is used to detect the thrust value in real time; The signal transmitting end is used to receive and transmit the first signal generated by the sensor (41); The control terminal is electrically connected to the signal transmitting terminal. The control terminal can monitor the data of the sensor (41) in real time and send out a second signal. The driving component (2) can receive the second signal.
9. The pusher device according to any of claims 1-8, characterized in that, The drive assembly (2) includes a motor (21), two pulleys (22) and a synchronous belt (23). The motor (21) is fixedly connected to the base (1). The synchronous belt (23) is wound around the two pulleys (22) and tensioned by the two pulleys (22). The rotation of one of the pulleys (22) connected to the output end of the motor (21) can drive the synchronous belt (23) to move. The connecting member (32) is fixed to the synchronous belt (23).
10. A loading and unloading machine for transporting material in a magazine, characterized in that, The loading and unloading machine includes a material box conveying assembly, a material conveying assembly, and a pushing device as described in any one of claims 1-9.