Weighing mechanism of packaging machine

Abstract

The utility model relates to the technical field of packaging machines, and discloses a packaging machine weighing mechanism which comprises a storage bin, a plurality of conveying assemblies are arranged on the lower side of the storage bin, weighing assemblies are arranged at the discharging ends of the conveying assemblies, and each weighing assembly comprises a charging barrel located below the discharging end of the corresponding conveying assembly. A weighing unit is arranged below the charging barrel, the weighing unit comprises a buffer frame located below the charging barrel, and a plurality of weighing sensors are arranged at the lower end of the buffer frame; through cooperative use of the storage bin, the conveying assembly and the weighing assembly, slow and uniform material conveying is achieved through the discharging port and the conveying assembly, the feeding precision is high, the feeding starting and stopping amount is controlled in batches and independently, the temporary storage unit is independently weighed through the weighing unit, batch packaging can be achieved, independent weighing can be conducted according to needs, and the production efficiency is improved. Different packaging requirements are met at the same time, and the effects of being high in weighing precision and wide in application range are achieved.

Description

Technical Field

[0001] This application relates to the field of packaging machine technology, and in particular to a weighing mechanism for a packaging machine. Background Technology

[0002] In modern industrial production, packaging is a crucial step in product manufacturing. For many products, accurate weighing is key to ensuring product quality and compliance with market standards. Traditional packaging machine weighing mechanisms cannot achieve precise flow control during material transport, leading to material accumulation or shortages, affecting the accuracy of packaged weight, and consequently increasing product defect rates and material waste. They can only perform single-mode weighing operations, requiring frequent equipment changes or parameter adjustments for products with different specifications and packaging requirements, reducing production efficiency and failing to meet diverse market demands. Utility Model Content

[0003] To address the issues of inaccurate flow control and limited operation modes in traditional packaging machine weighing mechanisms, which negatively impact production efficiency and product quality, this application provides a packaging machine weighing mechanism.

[0004] The weighing mechanism for a packaging machine provided in this application adopts the following technical solution:

[0005] A weighing mechanism for a packaging machine includes a storage bin, a plurality of conveying components are arranged on the lower side of the storage bin, a weighing component is arranged at the discharge end of the conveying components, the weighing component includes a material cylinder located below the discharge end of the conveying components, a weighing unit is arranged below the material cylinder, the weighing unit includes a buffer frame located below the material cylinder, and a plurality of weighing sensors are arranged at the lower end of the buffer frame.

[0006] Preferably, the storage bin includes a silo, and the bottom of the silo is provided with a plurality of discharge ports, each of which is connected to a corresponding conveying component.

[0007] Preferably, the conveying assembly includes a housing disposed below the discharge port, an auger disposed on the inner side of the lower end of the housing, and a drive motor being driven at one end of the auger.

[0008] Preferably, a conical hopper is provided on the inner side of the material cylinder, the lower end of the conical hopper passes through the bottom of the material cylinder and is connected to a discharge pipe, and a discharge valve is provided on the discharge pipe.

[0009] Preferably, the buffer frame is provided with a mounting groove adapted to the material cylinder, and a shock-absorbing pad is provided in the mounting groove. The bottom of several weighing sensors is provided with the same bracket.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] By using the storage bin, conveying components, and weighing components in combination, the material is slowly and evenly conveyed through the discharge port and conveying components. The feeding accuracy is high, and the feeding start and stop can be controlled in batches and individually. The weighing unit can weigh the temporary storage unit individually, which can realize batch packaging and can also weigh individually as needed to meet different packaging requirements at the same time. Compared with the existing technology, it has the advantages of high weighing accuracy and wide applicability. Attached Figure Description

[0012] Figure 1 This is a first-view three-dimensional structural diagram of an embodiment of the application;

[0013] Figure 2 This is a second-view perspective three-dimensional structural diagram of an embodiment of the application;

[0014] Figure 3 This is a third-view stereoscopic structural diagram of an embodiment of the application.

[0015] Explanation of reference numerals in the attached drawings: 1. Storage bin; 101. Bin; 102. Discharge port; 2. Conveying assembly; 201. Housing; 202. Drive motor; 203. Screwdriver; 3. Weighing assembly; 301. Temporary storage unit; 3011. Cylinder; 3012. Conical hopper; 3013. Discharge pipe; 302. Weighing unit; 3021. Buffer frame; 3022. Weighing sensor; 3023. Bracket; 303. Discharge valve. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0017] This application discloses a weighing mechanism for a packaging machine. (Refer to...) Figure 1-3 A weighing mechanism for a packaging machine mainly consists of a storage bin 1, a conveying component 2, and a weighing component 3, which enables accurate weighing and efficient conveying of packaging materials to meet the needs of different packaging specifications.

[0018] Reference Figure 1 The storage silo 101 serves as a storage container for materials. Made of stainless steel with a polished interior surface, it effectively reduces material adhesion and ensures smooth material flow. Its shape and size are designed according to the characteristics of the packaged materials and the production line capacity, such as common cylindrical or square structures. The discharge port 102 is integrally formed with the silo 101 or connected by welding, ensuring the port's robustness and sealing. It is mounted on a custom-designed support frame.

[0019] Reference Figure 3The conveying component 2 is responsible for conveying the material in the storage bin 1 to the weighing component 3. The number and position of the discharge ports 102 are set according to the conveying component 2. The conveying component 2 includes a housing 201, which is connected to the discharge ports 102 by a flange or welding method with good sealing performance. Its internal structure is perfectly matched with the auger 203, ensuring that the auger 203 smoothly pushes the material forward when rotating, and maintains an appropriate gap with the inner wall to avoid material jamming. The auger 203 is made of stainless steel, and the pitch, diameter and thickness of the spiral blades are optimized to adapt to the material properties and conveying volume, achieving stable and uniform feeding. The drive motor 202 is a variable frequency speed control motor with a flexible speed range to meet different conveying speed requirements. It is equipped with a reliable reducer to increase torque and ensure that the auger 203 rotates smoothly. The motor is firmly connected to the housing 201, and the vibration is reduced by the use of shock-absorbing pads or brackets. It is also easy to install, disassemble and maintain, ensuring the high efficiency and stability of material conveying and ensuring the accurate amount of material conveyed each time.

[0020] Reference Figure 2 The weighing assembly 3 includes a temporary storage unit 301 and a weighing unit 302, used to accurately measure the weight of materials required for packaging. The material cylinder 3011 of the temporary storage unit 301 is made of high-strength plastic or stainless steel, with a smooth interior for easy material flow and cleaning. The angle and size of the conical hopper 3012 are designed according to the material flowability, ensuring smooth discharge of materials through the discharge pipe 3013. The discharge pipe 3013 has a suitable diameter and length for easy installation of the unloading valve 303. The unloading valve 303 is an electric butterfly valve or pneumatic ball valve with good sealing performance and reliable operation. Its switching speed and control accuracy meet the packaging unloading requirements, and it has a good electrical connection with the control system, enabling remote control and ensuring accurate material discharge according to packaging needs.

[0021] Reference Figure 3 The buffer frame 3021 of the weighing unit 302 is made of metal, with sufficient structural strength and rigidity to support the weight of the material cylinder 3011 and the material, ensuring the accuracy of the mounting groove dimensions and making the material cylinder 3011 installed accurately and stably without displacement or shaking. The shock-absorbing pads are made of high-quality rubber or polyurethane, with thickness and hardness selected according to the weight of the material cylinder 3011 and the impact force of the material discharge, effectively reducing the impact on the weighing sensor 3022 during discharge and improving weighing accuracy and stability. The weighing sensor 3022 is a high-precision, high-reliability strain gauge sensor, connected to the buffer frame 3021 and bracket 3023 using a professional installation method to ensure accurate weighing and provide protection against damage from materials, dust, and moisture, ensuring weighing accuracy. The bracket 3023 is made of robust metal, stably supporting the weighing sensor 3022 and the buffer frame 3021, facilitating connection and fixation with other parts of the packaging machine, and providing a stable and reliable support foundation for the entire weighing mechanism.

[0022] The implementation principle of a weighing mechanism for a packaging machine according to an embodiment of this application is as follows:

[0023] In the packaging production line, this weighing mechanism is installed in a suitable position to ensure that the storage bin 1 is firmly fixed, and that all conveying components 2 and weighing components 3 are tightly connected without leakage, so that it can work in coordination with other parts of the packaging machine.

[0024] When the packaging operation is initiated, the control system sends instructions to the drive motor 202 of the conveying assembly 2 according to the preset packaging weight and packaging mode (batch or individual packaging). The drive motor 202 rotates at a stable speed according to the instructions, driving the auger 203 to rotate. The auger 203 conveys the material in the storage bin 1 to the material cylinder 3011 through the discharge port 102. During this process, the spiral structure and speed control of the auger 203 ensure uniform and slow material conveying, avoiding material accumulation or shoving, thus guaranteeing feeding accuracy.

[0025] For batch packaging, the control system simultaneously activates multiple conveying components 2, allowing materials to be quickly and evenly filled into each material cylinder 3011. When the material in the material cylinder 3011 reaches a certain amount, the discharge valve 303 opens, and the material falls through the discharge pipe 3013 onto the weighing unit 302 below. At this time, the shock-absorbing pads on the buffer frame 3021 act as a buffer, reducing the impact of the falling material on the weighing sensor 3022. Multiple weighing sensors 3022 measure the weight of the material in real time and feed the data back to the control system. When the preset batch packaging weight is reached, the discharge valve 303 closes, completing one batch packaging weighing process.

[0026] For individual packaging, the control system activates the corresponding conveying component 2 according to the weight requirements of each package, conveying an appropriate amount of material to the corresponding material cylinder 3011. Then, the material is discharged to the weighing unit 302 for individual weighing via the discharge valve 303. Throughout the weighing process, the load cell 3022 accurately measures the material weight and feeds the data back to the control system. When the preset weight for individual packaging is reached, the discharge valve 303 closes, completing the weighing process for individual packaging.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0030] 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. A packaging machine weighing mechanism comprising a storage bin (1), characterized in that: The lower side of the storage bin (1) is provided with a plurality of conveying assemblies (2), the discharging end of the conveying assembly (2) is provided with a weighing assembly (3), the weighing assembly (3) comprises a material cylinder (3011) located below the discharging end of the conveying assembly (2), the lower side of the material cylinder (3011) is provided with a weighing unit (302), the weighing unit (302) comprises a buffer frame (3021) located below the material cylinder (3011), the lower end of the buffer frame (3021) is provided with a plurality of load sensors (3022).

2. A packaging machine weighing mechanism according to claim 1, characterised in that: The storage bin (1) comprises a bin (101), the bottom of the bin (101) is provided with a plurality of discharge ports (102), and the discharge ports (102) are connected with corresponding conveying assemblies (2) respectively.

3. A packaging machine weighing mechanism according to claim 2, characterised in that: The conveying assembly (2) comprises a shell (201) arranged below the discharge port (102), the inner side of the lower end of the shell (201) is provided with an auger (203), and one end of the auger (203) is drivingly provided with a driving motor (202).

4. A packaging machine weighing mechanism according to claim 1, characterized in that: The inner side of the material cylinder (3011) is provided with a conical hopper (3012), the lower end of the conical hopper (3012) penetrates through the bottom of the material cylinder (3011) and is connected with a discharging pipe (3013), and the discharging pipe (3013) is provided with a discharging valve (303).

5. A packaging machine weighing mechanism according to claim 1, characterized in that: The buffer frame (3021) is provided with a mounting groove matched with the material cylinder (3011), the mounting groove is provided with a shock pad, and the bottom of the load sensor (3022) is provided with a same bracket (3023).

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