Tea box weighing and screening unit with abnormal weight recognition function

Abstract

The utility model provides a tea box weighing and screening unit with a weight abnormity identification function. The tea box weighing and screening unit with the weight abnormity identification function comprises a conveying mechanism, a weighing unit, a removing mechanism and a collecting mechanism. Wherein the removing mechanism comprises a main driving mechanism and a push plate assembly, and the main driving mechanism is provided with a first output end capable of performing linear reciprocating motion; the push plate assembly is connected to the output end of the main driving mechanism, the push plate assembly comprises a connecting support, a main push plate fixed to the connecting support, an auxiliary driving mechanism fixed to the connecting support and a flexible contact head, the auxiliary driving mechanism comprises a second output end capable of doing linear reciprocating motion, and the flexible contact head is connected to the second output end; when the weighing unit detects that the tea box is overweight, the main driving mechanism drives the push plate assembly to extend out; when the weighing unit detects that the tea box is not heavy, the main driving mechanism drives the push plate assembly to stretch out, the auxiliary driving mechanism drives the flexible contact head to stretch out, and the tea box is pushed into the collecting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of tea production technology, and in particular to a tea box weighing and screening unit with weight abnormality identification function. Background Technology

[0002] As a common commodity, the accuracy of tea packaging weight directly affects consumer rights and the reputation and cost control of manufacturers. In the automated packaging process of tea boxes, it is generally necessary to weigh the finished tea boxes and remove those that do not meet the weight requirements, such as empty boxes, underweight, or overweight boxes, from the qualified products.

[0003] Currently, many automated tea box weighing and sorting machines often employ a relatively simple and fixed rejection mechanism when handling products that do not meet weight standards. For example, they use rigid components such as pneumatic pushers or baffles to remove all non-conforming tea boxes from the production line with uniform force and method. While this "one-size-fits-all" approach can achieve rapid separation of non-conforming products, it also has significant drawbacks.

[0004] Among the tea boxes that fail to meet weight standards, some may be slightly underweight or overweight due to accidental errors during the packaging process, and thus have value for reuse or other treatment. However, the rigid and forceful removal methods commonly used in current technology easily cause scratches, dents, deformation, or even damage to the appearance of these tea boxes when they are removed. This physical damage not only renders these potentially valuable packaged tea boxes unusable, increasing the company's processing costs, but also contradicts the increasingly advocated concepts of green production and resource recycling. This problem of packaging damage caused by improper removal methods is particularly prominent for tea products using high-end, fragile packaging materials.

[0005] Therefore, it is necessary to improve the existing tea box weighing and sieving technology to overcome its shortcomings. Utility Model Content

[0006] To overcome the problems existing in related technologies, the purpose of this utility model is to provide a tea box weighing and screening unit with weight anomaly identification function. This tea box weighing and screening unit with weight anomaly identification function is provided by setting a push plate assembly including a main push plate driven by a main drive mechanism and a flexible contact head driven by an independent auxiliary drive mechanism. The main push plate is used to reject overweight tea boxes, and the flexible contact head is used to reject underweight tea boxes. This overcomes the problem in the prior art that it is easy to cause physical damage such as scratches, indentations, and deformation to the appearance of some tea boxes that still have recycling value (such as slightly overweight or underweight, empty shells but intact packaging), resulting in waste and increased processing costs.

[0007] A weighing and screening unit for tea boxes with weight anomaly detection function includes:

[0008] A conveyor mechanism for conveying tea boxes;

[0009] A weighing unit is located on the path of the conveying mechanism and is used to detect the weight of the tea box;

[0010] The rejection mechanism is located downstream of the weighing unit and on one side of the conveying mechanism;

[0011] A collection mechanism, located on the other side of the conveying mechanism and opposite to the rejection mechanism, is used to collect rejected tea boxes;

[0012] The rejection mechanism includes:

[0013] The main drive mechanism has a first output end capable of linear reciprocating motion;

[0014] A push plate assembly is connected to the first output end of the main drive mechanism. The push plate assembly includes a connecting bracket, a main push plate fixed on the connecting bracket, a secondary drive mechanism fixed on the connecting bracket, and a flexible contact head. The secondary drive mechanism includes a second output end with linear reciprocating motion, and the flexible contact head is connected to the second output end.

[0015] When the weighing unit detects that the tea box is overweight, the main drive mechanism drives the push plate assembly to extend, so that the main push plate pushes the tea box into the collection mechanism.

[0016] When the weighing unit detects that the tea box is underweight, the main drive mechanism drives the push plate assembly to extend, and the auxiliary drive mechanism drives the flexible contact head to extend, so that the flexible contact head pushes the tea box into the collection mechanism.

[0017] Furthermore, the collection mechanism includes a first collection area for collecting overweight tea boxes and a second collection area for collecting underweight tea boxes;

[0018] When the weighing unit detects that the tea box is overweight, the main drive mechanism drives the push plate assembly to extend, so that the main push plate pushes the overweight tea box into the first collection area.

[0019] When the weighing unit detects that the tea box is underweight, the main drive mechanism drives the push plate assembly to extend, and the auxiliary drive mechanism drives the flexible contact head to extend, so that the flexible contact head pushes the underweight tea box into the second collection area.

[0020] Furthermore, the flexible contact head is made of silicone material, and the contact surface of the flexible contact head forms a multi-point contact structure.

[0021] Furthermore, the flexible contact head includes at least three spaced-apart elastic finger strips, with the free ends of the elastic finger strips facing the collecting mechanism.

[0022] Furthermore, the auxiliary drive mechanism and the main push plate are arranged side by side on the connecting bracket, the first collection area and the second collection area are arranged side by side, the main push plate is opposite to the first collection area, and the auxiliary drive mechanism is opposite to the second collection area.

[0023] Furthermore, the rejection mechanism is mounted on one side of the conveying mechanism via an adjustable connection structure;

[0024] The adjustable connection structure includes a slide rail fixed to the conveying mechanism and a slider fixed to the rejection mechanism. The slide rail and the slider are movably connected and fixed by fasteners.

[0025] Furthermore, the slider is cylindrical, the axis of the slider is horizontal, there are two sliders, the two sliders are arranged symmetrically, there are two slide rails corresponding to the sliders, and the middle of the slide rail is provided with a groove to accommodate the slider, the groove is arranged in the vertical direction.

[0026] Furthermore, the connecting bracket has an L-shaped plate structure, which includes a first plate surface arranged along the path direction of the conveying mechanism and a second plate surface arranged perpendicular to the path direction of the conveying mechanism. The first plate surface is used to install the main push plate, and the second plate surface is used to install the auxiliary drive mechanism.

[0027] Furthermore, both the main drive mechanism and the auxiliary drive mechanism are cylinders.

[0028] Furthermore, the weighing unit includes a weighing platform and a protective cover covering the weighing platform, the protective cover being fixed to the frame of the conveying mechanism.

[0029] The beneficial effects of this utility model are as follows:

[0030] This utility model provides a tea box weighing and screening unit with weight anomaly identification function. This unit features a pusher assembly in its rejection mechanism, consisting of a main pusher plate driven by a main drive mechanism and a flexible contact head driven by an independent auxiliary drive mechanism. Based on the measurement results from the weighing unit, the main drive mechanism and / or the auxiliary drive mechanism are selectively driven. This allows for differentiated rejection strategies for tea boxes with different weight anomalies. The flexible contact head can gently remove underweight tea boxes with minimal impact, avoiding damage to their appearance caused by traditional rigid rejection methods. Alternatively, the main pusher plate can effectively reject overweight tea boxes. This dual, selectable rejection structure design significantly improves the flexibility and intelligence of the rejection operation, enhances adaptability to handling different types of non-conforming products, and effectively protects the integrity of some non-conforming product packaging, thereby reducing unnecessary packaging material waste and lowering production costs. Attached Figure Description

[0031] Figure 1 This is a top view of the tea box weighing and screening unit with weight anomaly identification function provided in this application;

[0032] Figure 2 This is a perspective view of the tea box weighing and screening unit with weight anomaly identification function provided in this application;

[0033] Figure 3 This is a three-dimensional view of the rejection mechanism provided in this application.

[0034] Figure label:

[0035] 100. Conveying mechanism;

[0036] 200. Weighing unit;

[0037] 300. Rejection mechanism; 310. Main drive mechanism; 320. Connecting bracket; 330. Main push plate; 340. Secondary drive mechanism; 350. Flexible contact head; 360. Adjustable connection structure;

[0038] 400. Collection agency; 410. First collection area; 420. Second collection area. Detailed Implementation

[0039] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0040] Example

[0041] This utility model provides a tea box weighing and screening unit with weight abnormality identification function, including a conveying mechanism 100, a weighing unit 200, a rejection mechanism 300, a collection mechanism 400, and a control unit.

[0042] The conveying mechanism 100 is used to continuously or intermittently convey tea boxes. In this embodiment, the conveying mechanism 100 may be a belt conveyor line.

[0043] The weighing unit 200 is located on the path of the conveying mechanism 100 and is used to detect the weight of the passing tea boxes in real time. In this embodiment, the weighing unit 200 includes a weighing platform on which the tea boxes are weighed. A weighing sensor is located below the weighing platform. To ensure weighing accuracy, a protective cover is provided above the weighing unit 200. This protective cover is fixed to the frame of the conveying mechanism 100 to prevent external factors such as airflow from interfering with the weighing process.

[0044] The rejection mechanism 300 is located downstream of the weighing unit 200 and on one side of the conveying mechanism 100, and is used to reject tea boxes that do not meet the weight requirements from the conveying mechanism 100.

[0045] A collection mechanism 400 is located on the other side of the conveying mechanism 100, opposite to the rejection mechanism 300, and is used to collect rejected tea boxes. In this embodiment, the collection mechanism 400 includes a first collection area 410 for collecting overweight tea boxes and a second collection area 420 for collecting underweight tea boxes (including empty tea boxes). The first collection area 410 and the second collection area 420 can be designed as two independent collection containers or two areas separated by a partition within a single container, arranged side by side.

[0046] The control unit, such as a PLC or a microcontroller, is communicatively connected to the weighing sensor of the weighing unit 200 and the drive component of the rejection mechanism 300. It receives the weighing signal, compares it with the preset qualified weight range, and issues corresponding control commands to the rejection mechanism 300 based on the comparison results.

[0047] The core lies in the structure of the rejection mechanism 300. The rejection mechanism 300 includes a main drive mechanism 310 and a push plate assembly connected to its first output end. The main drive mechanism 310 has a first output end capable of linear reciprocating motion. In this embodiment, the main drive mechanism 310 can be a standard cylinder.

[0048] The push plate assembly includes a connecting bracket 320, a main push plate 330 fixed on the connecting bracket 320, a secondary drive mechanism 340 fixed on the connecting bracket 320, and a flexible contact head 350 connected to the second output end of the secondary drive mechanism 340.

[0049] In this embodiment, the connecting bracket 320 has an L-shaped plate structure. This L-shaped plate structure includes a first plate surface arranged along the path direction of the conveying mechanism 100 (i.e., the forward direction of the tea box) and a second plate surface arranged perpendicular to the path direction of the conveying mechanism 100 (i.e., the rejection action direction). The main push plate 330 is fixed to the first plate surface; its material can be hard plastic or metal, and it is used to perform conventional rejection actions. The auxiliary drive mechanism 340 is mounted and fixed to the second plate surface. In this embodiment, the auxiliary drive mechanism 340 is also a cylinder, for example, a miniature cylinder with a stroke and thrust smaller than that of the main drive mechanism 310. The auxiliary drive mechanism 340 has a second output end capable of linear reciprocating motion.

[0050] The flexible contact head 350 is connected to the second output end of the auxiliary drive mechanism 340. In this embodiment, the flexible contact head 350 is made of silicone material, and its contact surface forms a multi-point contact structure. Specifically, the flexible contact head 350 may include at least three (e.g., three to five) spaced elastic finger-like strips, the free ends of which face the collecting mechanism 400, and are able to elastically deform when in contact with the tea box to achieve a gentle contact.

[0051] Based on the characteristics of the tea box and the rejection requirements, the control unit is electrically connected to the main drive mechanism 310 and the auxiliary drive mechanism 340 (via controlling solenoid valves, etc.), and selectively drives the main drive mechanism 310 and / or the auxiliary drive mechanism 340 according to the measurement results of the weighing unit 200. For example:

[0052] When the weighing unit 200 detects that the tea box is overweight, the control unit drives the main drive mechanism 310, so that the main push plate 330 pushes the overweight tea box into the first collection area 410.

[0053] When the weighing unit 200 detects that the tea box is underweight (including empty), the control unit drives the main drive mechanism 310 to extend the push plate assembly, and at the same time drives the auxiliary drive mechanism 340 to push the underweight tea box into the second collection area 420.

[0054] For other specific situations, logic for the two to work together can also be set.

[0055] In this embodiment, the auxiliary drive mechanism 340 and the main push plate 330 are arranged side by side on the connecting bracket 320 (i.e., their projections overlap on a plane perpendicular to the conveying direction). Correspondingly, the first collection area 410 and the second collection area 420 are also arranged side by side, such that the rejection action of the main push plate 330 corresponds to the first collection area 410, and the rejection action of the auxiliary drive mechanism 340 (through the flexible contact head 350) corresponds to the second collection area 420.

[0056] To facilitate adjustment of the overall position of the rejection mechanism 300, the rejection mechanism 300 (specifically referring to its fixed base or the cylinder of the main drive mechanism 310) is mounted on the side frame of the conveying mechanism 100 via an adjustable connection structure 360. The adjustable connection structure 360 ​​includes a slide rail fixed to the frame of the conveying mechanism 100 and a slider fixed to the rejection mechanism 300. The slide rail and the slider are movably connected and fixed by fasteners. In this embodiment, the slider is cylindrical with its axis horizontally positioned. There are two sliders, symmetrically arranged on the fixed base of the rejection mechanism 300. There are also two corresponding sliders for each slide rail. Each slide rail has a groove in the middle to accommodate the corresponding slider, and this groove is arranged vertically. When it is necessary to adjust the vertical position of the rejection mechanism 300, the fasteners (e.g., locking bolts) are loosened, allowing the slider to slide up and down within the groove. After adjusting to the appropriate position, the fasteners are tightened again. Of course, it can also be designed as a horizontally adjustable slide rail and slider structure, or have both horizontal and vertical adjustment capabilities.

[0057] Tea boxes are sequentially fed into the weighing unit 200 by the conveying mechanism 100. The weighing platform and sensors detect the weight and transmit the signal to the control unit. The control unit determines whether the weight of the tea box is acceptable and the type of non-acceptance (e.g., empty, underweight, overweight). Acceptable tea boxes continue to move forward along the conveying mechanism 100. When an unacceptable tea box reaches the rejection station, the control unit issues a command according to preset logic: if it is overweight, the main drive mechanism 310 is driven to push the main push plate 330 into the first collection area 410; if it is underweight (including empty boxes), the main drive mechanism 310 is driven to extend the push plate assembly, and the auxiliary drive mechanism 340 is driven to push the flexible contact head 350 into the second collection area 420.

[0058] This utility model innovatively sets up a push plate assembly in the rejection mechanism 300, consisting of a main push plate 330 driven by a main drive mechanism 310 and a flexible contact head 350 driven by an independent auxiliary drive mechanism 340. This allows the control unit to intelligently select to activate the flexible contact head 350 for gentle rejection, or activate the main push plate 330 for conventional rejection, or both, based on the degree and type of abnormal weight of the tea box. This significantly improves the flexibility of the rejection method, the ability to distinguish and process different non-conforming products, and the protection of the product packaging.

[0059] Meanwhile, the flexible contact head 350, which incorporates specific materials and structures, further ensures the effect of gentle rejection, while the adjustable connection structure 360 ​​adopted by the rejection mechanism 300 enhances the convenience of equipment installation and adaptability to different production needs. The overall design is ingenious, and the structure is compact and reasonable, effectively overcoming the defects of existing technologies that are prone to damaging the appearance of products with recycling value due to the single and crude rejection method, and reducing packaging material waste.

[0060] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application. Any specific values ​​in all examples shown and discussed herein should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0061] Furthermore, it should be noted that the use of terms such as "first" and "second" is merely for ease of distinction, and unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tea box weighing and screening unit with weight anomaly detection function, characterized in that, include: A conveying mechanism (100) is used to convey tea boxes; A weighing unit (200) is provided on the path of the conveying mechanism (100) for detecting the weight of the tea box; The rejection mechanism (300) is located downstream of the weighing unit (200) and on one side of the conveying mechanism (100); A collection mechanism (400) is located on the other side of the conveying mechanism (100), opposite to the rejection mechanism (300), and is used to collect rejected tea boxes; The rejection mechanism (300) includes: The main drive mechanism (310) has a first output end capable of linear reciprocating motion; A push plate assembly is connected to the first output end of the main drive mechanism (310). The push plate assembly includes a connecting bracket (320), a main push plate (330) fixed on the connecting bracket (320), a secondary drive mechanism (340) fixed on the connecting bracket (320), and a flexible contact head (350). The secondary drive mechanism (340) includes a second output end with linear reciprocating motion, and the flexible contact head (350) is connected to the second output end. When the weighing unit (200) detects that the tea box is overweight, the main drive mechanism (310) drives the push plate assembly to extend, so that the main push plate (330) pushes the tea box into the collection mechanism (400). When the weighing unit (200) detects that the tea box is underweight, the main drive mechanism (310) drives the push plate assembly to extend, and the auxiliary drive mechanism (340) drives the flexible contact head (350) to extend, so that the flexible contact head (350) pushes the tea box into the collecting mechanism (400).

2. The tea box weighing and screening unit with weight anomaly identification function according to claim 1, characterized in that: The collection mechanism (400) includes a first collection area (410) for collecting overweight tea boxes and a second collection area (420) for collecting underweight tea boxes; When the weighing unit (200) detects that the tea box is overweight, the main drive mechanism (310) drives the push plate assembly to extend, so that the main push plate (330) pushes the overweight tea box into the first collection area (410). When the weighing unit (200) detects that the tea box is underweight, the main drive mechanism (310) drives the push plate assembly to extend, and the auxiliary drive mechanism (340) drives the flexible contact head (350) to extend, so that the flexible contact head (350) pushes the underweight tea box into the second collection area (420).

3. The tea box weighing and screening unit with weight anomaly identification function according to claim 1 or 2, characterized in that: The flexible contact head (350) is made of silicone material, and the contact surface of the flexible contact head (350) forms a multi-point contact structure.

4. The tea box weighing and screening unit with weight anomaly identification function according to claim 3, characterized in that: The flexible contact head (350) includes at least three spaced elastic finger strips, the free ends of which face the collecting mechanism (400).

5. The tea box weighing and screening unit with weight anomaly identification function according to claim 2, characterized in that: The secondary drive mechanism (340) and the main push plate (330) are arranged side by side on the connecting bracket (320). The first collection area (410) and the second collection area (420) are arranged side by side. The main push plate (330) is opposite to the first collection area (410), and the secondary drive mechanism (340) is opposite to the second collection area (420).

6. The tea box weighing and screening unit with weight anomaly identification function according to claim 5, characterized in that: The rejection mechanism (300) is mounted on one side of the conveying mechanism (100) via an adjustable connection structure (360); The adjustable connection structure (360) includes a slide rail fixed to the conveying mechanism (100) and a slider fixed to the rejection mechanism (300). The slide rail and the slider are movably connected and fixed by fasteners.

7. The tea box weighing and screening unit with weight anomaly identification function according to claim 6, characterized in that: The slider is cylindrical, and its axis is horizontal. There are two sliders, which are symmetrically arranged. There are two slide rails corresponding to the sliders. The middle of the slide rails has a groove to accommodate the sliders, and the grooves are arranged vertically.

8. The tea box weighing and screening unit with weight anomaly identification function according to claim 1, characterized in that: The connecting bracket (320) has an L-shaped plate structure. The L-shaped plate structure includes a first plate surface arranged along the path direction of the conveying mechanism (100) and a second plate surface arranged along the path direction perpendicular to the conveying mechanism (100). The first plate surface is used to install the main push plate (330), and the second plate surface is used to install the auxiliary drive mechanism (340).

9. The tea box weighing and screening unit with weight anomaly identification function according to claim 8, characterized in that: Both the main drive mechanism (310) and the auxiliary drive mechanism (340) are cylinders.

10. The tea box weighing and screening unit with weight anomaly identification function according to claim 1, characterized in that: The weighing unit (200) includes a weighing platform and a protective cover covering the weighing platform, the protective cover being fixed to the frame of the conveying mechanism (100).

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