Weighing platform with suspended weighing function
By combining a suspended weighing structure with a force sensor, the problem of inaccurate data caused by vibration during the loading process of the weighing platform is solved, achieving stable weight feedback and efficient weighing control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI XIXI INTELLIGENT TECH CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-06-23
AI Technical Summary
Existing weighing platforms suffer from inaccurate weighing data due to vibrations in the filling equipment during food filling, and cannot provide stable real-time weight feedback.
The suspended weighing structure is adopted. Through the coordinated action of the lifting pallet and the hollow structure of the weighing platform, the packaging box is detached from the conveyor line and locked in the hollow structure during weighing, reducing vibration interference. The weight change is detected in real time by the force sensor.
It improves the accuracy of weight feedback signals during the filling process, reduces the impact of filling equipment vibration on the weighing sensor, ensures stable measurement posture, and improves weighing accuracy and efficiency.
Smart Images
Figure CN224398783U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of weighing equipment technology, specifically to a weighing platform with suspended weighing function. Background Technology
[0002] In automated production lines for food and other products, products often require final quantitative filling of materials into packaging boxes. To achieve accurate filling, an online weighing feedback control system is commonly used: a weighing station is set up before or after the filling station to measure the weight of the box and materials in real time, and the data is fed back to the filling equipment to adjust the filling amount.
[0003] However, instability of the box during the filling process directly affects weighing accuracy. Existing weighing platforms are usually flush with the conveyor line, forming a continuous support plane, and weighing is achieved by supporting the bottom of the packaging box. During the filling process, the movement of the filling equipment will generate vibrations. These vibration interferences will be superimposed on the weight signal, causing significant fluctuations in the measured value, making it impossible to provide accurate and stable real-time data for filling control.
[0004] The weighing machine of the automatic electrical control packaging system disclosed in patent document CN210175236U has the main improvement of realizing the free height adjustment of the weighing platform to adapt to the weighing needs of packaging bags with different heights. However, if it is applied to the material filling scenario, the above-mentioned problem of inaccurate weighing data still exists. Therefore, there is an urgent need for a weighing platform that can isolate the external force interference brought by the filling mechanism during the material filling process and ensure that the box is in a stable state during weighing, so as to provide a reliable weight feedback signal for the control of the filling mechanism. Utility Model Content
[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a weighing platform with a suspended weighing function.
[0006] The weighing platform with suspended weighing function provided by this utility model includes a mounting frame, a weighing platform body, a lower pusher cylinder and a force sensor, wherein the force sensor is installed at the bottom of the weighing platform body.
[0007] Both the weighing platform body and the lower pusher cylinder are mounted on the mounting frame. The weighing platform body is provided with a hollow structure to accommodate and limit the packaging box. The piston rod of the lower pusher cylinder is equipped with a lifting support plate corresponding to the hollow structure.
[0008] Weighing preparation state: The lifting plate is embedded in the hollow structure, and the packaging box is placed on the lifting plate without contacting the weighing platform body;
[0009] Suspended weighing state: The lifting plate descends until it detaches from the bottom of the packaging box, and the packaging box is fixedly engaged in the hollow structure.
[0010] Preferably, the force sensor is fixedly mounted on the side of the mounting frame via a force sensor mounting base, and the weighing platform body is mounted on the force sensor.
[0011] Preferably, the cylinder of the lower pusher cylinder is fixedly installed on the side of the mounting frame, and the piston rod of the lower pusher cylinder is arranged in the vertical direction to drive the lifting plate to rise and fall in the vertical direction.
[0012] Preferably, the outline of the lifting support plate corresponds to the hollow structure;
[0013] When ready to weigh, the gap between the outer edge of the lifting plate and the inner edge of the hollow structure is set, and the upper surface of the lifting plate and the upper surface of the weighing platform body are on the same plane.
[0014] Preferably, the outline of the hollow structure corresponds to the outline of the packaging box, and the area of the hollow structure is larger than the area of the bottom surface of the packaging box.
[0015] Preferably, the sidewalls of the packaging box are inclined, so that the cross-sectional area of the packaging box gradually increases from the bottom to the top;
[0016] When suspended and weighed, the side wall of the packaging box overlaps with the inner edge of the hollow structure, so that the packaging box is locked and fixed in the hollow structure.
[0017] Preferably, it also includes a solenoid valve control module, which is mounted on the mounting bracket and connected to the lower pusher cylinder.
[0018] Preferably, the weighing platform body is spliced and disposed on one side of the conveyor line, and the top surface of the weighing platform body is at the same height as the conveyor surface.
[0019] Compared with the prior art, the present invention has the following beneficial effects:
[0020] This invention utilizes the synergistic effect of a lifting pallet and a hollow structure on a weighing platform to form a suspended weighing structure. During weighing, the pallet descends, causing the box to detach from the conveyor line and engage with the hollow structure. This reduces the impact of vibrations from the material and filling equipment during loading on the weighing sensor. Furthermore, the hollow structure can suppress horizontal displacement of the box and maintain a stable measurement posture, thereby improving the accuracy of the weight feedback signal during the loading process. Attached Figure Description
[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic diagram of the structure of the present invention in the weighing preparation state;
[0024] Figure 3 This is a schematic diagram of the structure of this utility model when it is in a suspended weighing state.
[0025] The diagram shows:
[0026] Packaging box 1, rear pusher cylinder protective shell 6
[0027] 2 rear pusher cylinders, 7 weighing platform body
[0028] Lower pusher cylinder 3, hollow structure 71
[0029] Lifting plate 31, force sensor 8
[0030] Solenoid valve control module 4 Force sensor mounting base 9
[0031] Communication module 5, trachea protection box 10 Detailed Implementation
[0032] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.
[0033] This utility model discloses a weighing platform with a suspended weighing function. Through the coordinated action of the lifting pallet and the hollow structure of the weighing platform, a suspended weighing structure is formed. During weighing, the pallet descends, causing the box to detach from the conveyor line and engage in the hollow structure. This reduces the impact of vibrations caused by materials and filling equipment during filling on the weighing sensor. Furthermore, the hollow structure can suppress horizontal displacement of the box and maintain a stable measurement posture, thereby improving the accuracy of the weight feedback signal during the filling process.
[0034] According to the weighing platform with suspended weighing function provided by this utility model, such as Figure 1 As shown, it includes a mounting frame, a weighing platform body 7, a lowering cylinder 3, and a force sensor 8. The force sensor 8 is installed at the bottom of the weighing platform body 7. Both the weighing platform body 7 and the lowering cylinder 3 are installed on the mounting frame. The weighing platform body 7 is provided with a hollow structure 71 for accommodating and limiting the packaging box 1. The piston rod of the lowering cylinder 3 is equipped with a lifting support plate 31 corresponding to the hollow structure 71.
[0035] When the weighing platform is in the weighing preparation state, such as Figure 2 As shown, the packaging box 1 is conveyed from the conveyor line to the weighing platform body 7. At this time, the lifting plate 31 is embedded in the hollow structure 71, and the packaging box 1 is placed on the lifting plate 31 without contacting the weighing platform body 7.
[0036] When the weighing platform is in a suspended weighing state, such as Figure 3 As shown, when the lower pusher cylinder 3 is activated, the lifting plate 31 descends until it is separated from the bottom of the packaging box 1. The packaging box 1 is fixedly engaged in the hollow structure 71 and restricted to the weighing platform body 7, so that it is separated from the conveyor line and suspended in the air, which facilitates accurate weighing.
[0037] In a preferred embodiment, the force sensor 8 is fixedly mounted on the side of the mounting frame via a force sensor mounting base 9, and the weighing platform body 7 is mounted on the force sensor 8. The force sensor 8 is used to detect the weight changes of the packaging box 1 and the food inside in real time. The force sensor mounting base 9 provides a stable mounting foundation for the force sensor 8 and ensures that its force direction is consistent, thereby improving measurement accuracy.
[0038] In a preferred embodiment, the cylinder of the lowering cylinder 3 is fixedly mounted on the side of the mounting frame, and the piston rod of the lowering cylinder 3 is arranged vertically to drive the lifting support plate 31 to rise and fall vertically. This is responsible for lowering the center of gravity of the packaging box 1, causing it to detach from the conveyor line and suspend itself on the weighing platform body 7, thereby achieving accurate weighing.
[0039] In a preferred embodiment, the outline of the lifting support plate 31 corresponds to the hollow structure 71. In the weighing preparation state, a gap is provided between the outer edge of the lifting support plate 31 and the inner edge of the hollow structure 71, and the upper surface of the lifting support plate 31 is on the same plane as the upper surface of the weighing platform body 7. The outline of the hollow structure 71 corresponds to the outline of the packaging box 1, and the area of the hollow structure 71 is larger than the area of the bottom surface of the packaging box 1. The sidewall of the packaging box 1 is an inclined mechanism, causing the cross-sectional area of the packaging box 1 to gradually increase from the bottom to the top. In the suspended weighing state, the sidewall of the packaging box 1 overlaps with the inner edge of the hollow structure 71, causing the packaging box 1 to be locked and fixed in the hollow structure 71.
[0040] In a preferred embodiment, the weighing platform further includes a solenoid valve control module 4, which is mounted on a mounting frame and connected to the lower pusher cylinder 3. The solenoid valve control module 4 is used to control the timing and logic of the pneumatic components in the system to achieve automated operation.
[0041] In a preferred embodiment, the weighing platform further includes a rear pusher cylinder 2, which is installed on one side of the weighing platform body 7 and sealed by a rear pusher cylinder protective shell 6. After weighing is completed, the lower pusher cylinder 3 rises to lift the packaging box 1 to the conveyor line. At this time, the rear pusher cylinder 2 pushes the packaging box 1 from the weighing platform body 7 to the next conveyor belt or workstation. In more preferred embodiments, an air pipe protection box 10 is also installed on the mounting frame to store and protect the air pipe lines, prevent air pipe wear or entanglement, and improve system stability.
[0042] In a preferred embodiment, the mounting bracket is also equipped with a communication module 5 for exchanging data with external devices (such as PLCs and robotic arm controllers) to achieve remote monitoring and coordinated actions.
[0043] In a preferred embodiment, the weighing platform body 7 is spliced and disposed on one side of the conveyor line, and the top surface of the weighing platform body 7 is at the same height as the conveyor surface.
[0044] The working principle of this utility model is as follows:
[0045] Packaging box loading: Food packaging box 1 is pushed by the conveyor line to the weighing platform body 7, and the packaging box 1 is stably placed through the hollow structure 71 on the top of the weighing platform body 7.
[0046] Suspended weighing preparation: The pusher cylinder 3 is activated to restrain the packaging box 1 on the weighing platform body 7, so that it is detached from the conveyor line and suspended in the air, which is convenient for subsequent accurate weighing.
[0047] Weighing process: Force sensor 8 monitors the weight of the food inside packaging box 1 in real time via the weighing platform body 7. The loading robotic arm gradually places the food into packaging box 1 based on the current weight information. When approaching the target weight, the robotic arm temporarily stores the food on the weighing platform's buffer platform, i.e., the area surrounding the weighing platform, and continues to select food combinations of suitable weights.
[0048] Final boxing and unloading: After confirming that the total weight meets the standard, the robotic arm places the food from the buffer platform into packaging box 1. Then, the pusher cylinder 2 is activated, pushing the weighed and filled packaging box 1 out of the weighing platform and into the next production line.
[0049] Control and Communication: The entire process is controlled by the solenoid valve control module 4, which controls the pneumatic actuator cylinder. The communication module 5 transmits weight data and status information to the host computer or robotic arm controller, achieving closed-loop control.
[0050] The above embodiments solve the problems of low efficiency and large error in traditional manual weighing: by linking force sensors with robotic arms, automatic weighing and loading are realized, improving efficiency and accuracy.
[0051] The above embodiments solve the problem of unstable packaging boxes affecting measurement accuracy during the weighing process: by using a pusher cylinder to detach the packaging box from the conveyor line and suspend it in the air, it is ensured that only the weight of the food and the box is measured during the weighing process, thus reducing interference.
[0052] The above embodiments solve the problem of difficulty in coordinating the robotic arm and the weighing device: the communication module enables linkage control with the robotic arm, allowing the robotic arm to accurately dispense food based on real-time weight feedback.
[0053] The above embodiments solve the problem of poor environmental adaptability of the equipment: by setting up structures such as air pipe protection boxes and cylinder protection shells, the dustproof and oil-proof capabilities of the system are improved, and the stability and service life of the equipment are enhanced.
[0054] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.
[0055] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
Claims
1. A weighing platform with suspended weighing function, characterized in that, It includes a mounting frame, a weighing platform body (7), a lower pusher cylinder (3), and a force sensor (8), wherein the force sensor (8) is installed at the bottom of the weighing platform body (7); The weighing platform body (7) and the lower push cylinder (3) are both mounted on the mounting frame. The weighing platform body (7) is provided with a hollow structure (71) for accommodating and limiting the packaging box (1). The piston rod of the lower push cylinder (3) is equipped with a lifting plate (31) corresponding to the hollow structure (71). Weighing preparation state: The lifting plate (31) is embedded in the hollow structure (71), and the packaging box (1) is placed on the lifting plate (31) and does not contact the weighing platform body (7); Suspended weighing state: The lifting plate (31) descends until it is detached from the bottom of the packaging box (1), and the packaging box (1) is fixedly engaged in the hollow structure (71).
2. The weighing platform with suspended weighing function according to claim 1, characterized in that, The force sensor (8) is fixedly mounted on the side of the mounting frame via the force sensor mounting base (9), and the weighing platform body (7) is mounted on the force sensor (8).
3. The weighing platform with suspended weighing function according to claim 1, characterized in that, The cylinder of the lower pusher cylinder (3) is fixedly installed on the side of the mounting frame. The piston rod of the lower pusher cylinder (3) is arranged in the vertical direction to drive the lifting plate (31) to rise and fall in the vertical direction.
4. The weighing platform with suspended weighing function according to claim 1, characterized in that, The outline of the lifting support plate (31) corresponds to the hollow structure (71); When the weighing is ready, the gap between the outer edge of the lifting plate (31) and the inner edge of the hollow structure (71) is provided, and the upper surface of the lifting plate (31) and the upper surface of the weighing platform body (7) are on the same plane.
5. The weighing platform with suspended weighing function according to claim 1, characterized in that, The outline of the hollow structure (71) corresponds to the outline of the packaging box (1), and the area of the hollow structure (71) is larger than the area of the bottom surface of the packaging box (1).
6. The weighing platform with suspended weighing function according to claim 5, characterized in that, The sidewall of the packaging box (1) is an inclined mechanism, which makes the cross-sectional area of the packaging box (1) gradually increase along the direction from bottom to top; When suspended and weighed, the side wall of the packaging box (1) overlaps with the inner edge of the hollow structure (71), so that the packaging box (1) is locked and fixed in the hollow structure (71).
7. The weighing platform with suspended weighing function according to claim 1, characterized in that, It also includes a solenoid valve control module (4), which is mounted on the mounting bracket and connected to the pusher cylinder (3).
8. The weighing platform with suspended weighing function according to claim 1, characterized in that, The weighing platform body (7) is spliced on one side of the conveyor line, and the top surface of the weighing platform body (7) is at the same height as the conveyor surface.