A packaging defective product removing device

By integrating a weighing scale and a material collection component into the conveying mechanism, a defective packaging rejection device was developed, solving the problem that cartoning machines cannot accurately control the quantity of products inside the packaging boxes and enabling precise detection and automatic collection during the packaging process.

CN224389370UActive Publication Date: 2026-06-23WELLEX MEDICAL & HEALTH PROD (HUBEI) CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WELLEX MEDICAL & HEALTH PROD (HUBEI) CO LTD
Filing Date
2025-07-10
Publication Date
2026-06-23

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    Figure CN224389370U_ABST
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Abstract

The utility model discloses a kind of packaging defective product rejection devices, including first mounting plate, first belt type conveying mechanism, second mounting plate and second belt type conveying mechanism, two first mounting plates are arranged at intervals, first belt type conveying mechanism is located between two first mounting plates, one of first mounting plate is equipped with first gap, weight scale is equipped in first gap, weight scale is located between first belt type conveying mechanism, weight scale is located in first belt type conveying mechanism, two second mounting plates are respectively with two first mounting plates side by side arrangement, second conveying mechanism is located between two second mounting plates, one of second mounting plate is equipped with pusher assembly, and the other end of second mounting plate away from pusher assembly is equipped with collection assembly. The utility model can effectively weigh packaging box, to detect the condition of product loaded in it, and after detection, packaging box with problem can also be collected by pusher mechanism.
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Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a device for rejecting defective packaging products. Background Technology

[0002] After the product is manufactured, it needs to be packaged with packaging components to facilitate subsequent transportation operations. In current operations, in order to reduce the workload of workers, cartoning machines are often used to pack the products into packaging boxes.

[0003] Existing cartoning machines seal the boxes after the product is filled during production, making it impossible to determine the amount of product inside. This can easily lead to overfilling, underfilling, or empty boxes, resulting in uncontrollable quantities and affecting subsequent processing. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes a defective packaging rejection device. This device can effectively weigh the packaging boxes to detect the contents of the products inside. The weighing process does not affect the normal material conveying. After detection, the problematic packaging boxes can be collected by a pushing mechanism, thus effectively solving the problem of inaccurate material quantity control during the packaging process.

[0006] (II) Technical Solution

[0007] This utility model provides a defective packaging rejection device, including a first mounting plate, a first belt conveyor mechanism, a second mounting plate, and a second belt conveyor mechanism. Two first mounting plates are spaced apart, and the first belt conveyor mechanism is located between the two first mounting plates. One of the first mounting plates has a first notch, within which a weighing scale is installed. The weighing scale is located between and within the first belt conveyor mechanism, with its weighing end slidingly against the bottom end of the upper conveyor belt of the first belt conveyor mechanism. Two second mounting plates are arranged side-by-side with the two first mounting plates, and the second conveyor mechanism is located between the two second mounting plates. One of the second mounting plates has a pushing component, and the other second mounting plate has a collecting component at its end away from the pushing component. The upper end of the second conveyor mechanism is on the same horizontal plane as the upper end of the second mounting plate.

[0008] Preferably, the pushing assembly includes a mounting block, a cylinder, and a push plate. The mounting block is connected to the upper end of one of the second mounting plates. The mounting block has a first through hole. The cylinder is fixedly disposed in the first through hole. The telescopic rod of the cylinder is horizontally disposed and connected to the push plate. The cylinder can push the push plate to move above the second belt conveyor mechanism.

[0009] Preferably, the collecting component includes a guide block, which is connected to one end of another second mounting plate away from the push plate. The guide block has a first through groove at one end facing the second mounting plate, and a collecting unit is detachably provided below the guide block.

[0010] Preferably, it also includes a protective plate, which is connected to the upper end of the guide block, and the protective plate is inclined from top to bottom toward the end of the guide block away from the second mounting plate.

[0011] Preferably, the collection unit includes a collection box with an opening at the top. Limiting plates are vertically provided on both sides of the guide block. The collection box can slide between the two limiting plates. Both ends of the collection box are slidably fitted to the two limiting plates. An installation shaft is rotatably provided at the end of the guide block away from the second mounting plate. A clamping plate is provided on the installation shaft. The clamping plate can rotate to fit against the collection box.

[0012] Preferably, it also includes two third mounting plates, the two second mounting plates are spaced apart and located at the end of the first mounting plate away from the second mounting plate, and a stepping belt conveyor mechanism is provided between the two second mounting plates.

[0013] Preferably, it also includes a shielding frame, which is connected to the upper ends of the two first mounting plates, and the top wall of the shielding frame has a gap between it and the first belt conveyor mechanism for the workpiece to pass through.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] In this invention, the device can effectively weigh the packaging boxes to detect the contents of the products inside. The weighing process does not affect the normal material conveying. After the detection, the problematic packaging boxes can be collected by the pushing mechanism, thus effectively solving the problem of inaccurate material quantity control during the packaging process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a defective packaging rejection device proposed in this utility model.

[0017] Figure 2This is a top view of the defective packaging rejection device proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the weight scale in a defective packaging rejection device proposed in this utility model.

[0019] Reference numerals: 1. First mounting plate; 2. First belt conveyor mechanism; 3. Second mounting plate; 4. Second belt conveyor mechanism; 5. Weighing scale; 6. Mounting block; 7. Cylinder; 8. Push plate; 9. Guide block; 10. Protective plate; 11. Limiting plate; 12. Collection box; 13. Mounting shaft; 14. Clamping plate; 15. Third mounting plate; 16. Stepping belt conveyor mechanism; 17. Shielding frame. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figure 1-3As shown, this utility model proposes a defective packaging rejection device, including a first mounting plate 1, a first belt conveyor mechanism 2, a second mounting plate 3, and a second belt conveyor mechanism 4. Two first mounting plates 1 are spaced apart, and the first belt conveyor mechanism 2 is located between the two first mounting plates 1. One of the first mounting plates 1 has a first notch, within which a weighing scale 5 is installed. The weighing scale 5 is located between and within the first belt conveyor mechanism 2. The weighing end of the weighing scale 5 is slidably fitted against the bottom end of the upper conveyor belt of the first belt conveyor mechanism 2. Two second mounting plates 3 are arranged side-by-side with the two first mounting plates 1, and the second conveyor mechanism is located between the two second mounting plates 3. One of the second mounting plates 3 has a pushing component, and the other second mounting plate 3 has a collecting component at its end away from the pushing component. The upper end of the second conveyor mechanism is on the same horizontal plane as the upper end of the second mounting plate 3.

[0024] This technical solution integrates a weighing scale 5 into the conveying mechanism, enabling real-time weighing and detection of the conveyed materials. When the material passes through the first belt conveyor 2, the weighing scale 5 accurately measures the weight of the material, effectively detecting overfilled, underfilled, or empty packaging boxes. After the material moves to the second belt conveyor 4, the pushing component on it pushes overfilled, underfilled, or empty packaging boxes into the collection component for collection. This device effectively weighs the packaging boxes to detect the contents, and the weighing process does not affect the normal material conveying. After detection, the pushing mechanism can collect the problematic packaging boxes, effectively solving the problem of inaccurate material quantity control during the packaging process.

[0025] Furthermore, this application also proposes that the pushing assembly includes a mounting block 6, a cylinder 7 and a push plate 8. The mounting block 6 is connected to the upper end of one of the second mounting plates 3. The mounting block 6 is provided with a first through hole. The cylinder 7 is fixedly installed in the first through hole. The telescopic rod of the cylinder 7 is horizontally set and connected to the push plate 8. The cylinder 7 can push the push plate 8 to move above the second belt conveyor mechanism 4.

[0026] Therefore, this technical solution uses cylinder 7 to drive push plate 8 to move horizontally, which can push the packaging box on the conveyor belt to the designated position. The fixed structure of mounting block 6 and cylinder 7 ensures the stability of the pushing action, thus effectively pushing the problematic packaging box into the collection component.

[0027] Furthermore, this application also proposes that the collection component includes a guide block 9, which is connected to the end of another second mounting plate 3 away from the push plate 8. The end of the guide block 9 facing the second mounting plate 3 is provided with a first through groove, and a collection unit is detachably provided below the guide block 9.

[0028] This technical solution achieves automatic collection and storage of materials through the cooperation of guide block 9 and detachable collection unit. The first through slot on guide block 9 can effectively ensure that the material falls accurately into the collection unit, and the detachable design improves the ease of maintenance of the equipment.

[0029] Furthermore, this application also proposes a protective plate 10, which is connected to the upper end of the guide block 9, and the protective plate 10 is inclined from top to bottom toward the end of the guide block 9 away from the second mounting plate 3.

[0030] This technical solution effectively prevents the workpiece from accidentally popping out or deviating from the predetermined trajectory during the guiding process by setting an inclined protective plate 10 above the guide block 9. The inclined structure of the protective plate 10 guides the workpiece to slide smoothly into the collection unit.

[0031] Furthermore, this application also proposes that the collection unit includes a collection box 12 with an opening at the top. Limiting plates 11 are vertically provided on both sides of the guide block 9. The collection box 12 can slide between the two limiting plates 11. The two ends of the collection box 12 are respectively fitted and slidably arranged with the two limiting plates 11. The end of the guide block 9 away from the second mounting plate 3 is provided with a mounting shaft 13. A clamping plate 14 is provided on the mounting shaft 13. The clamping plate 14 can rotate to fit with the collection box 12.

[0032] Thus, this technical solution achieves precise positioning and rapid fixing of the collection box 12 through the synergistic effect of the limiting plate 11 and the locking plate 14. When the collection box 12 is pushed into the working position along the limiting plate 11, the rotating locking plate 14 can immediately fix the box body and prevent displacement during material conveying. When the collection box 12 needs to be replaced, the locking plate 14 can be unlocked simply by rotating it in the opposite direction.

[0033] Furthermore, this application also proposes two third mounting plates 15, which are spaced apart and located at the end of the first mounting plate 1 away from the second mounting plate 3, and a stepping belt conveyor mechanism 16 is provided between the two third mounting plates 15.

[0034] The device can be loaded using a stepping conveyor mechanism. The packaging box to be inspected is placed on the stepping belt conveyor 16, which then transports the packaging box to be inspected to the first belt conveyor 2. After one is transported, the next one is transported after a period of time. This ensures that the first packaging box entering the first belt conveyor 2 has moved to the second belt conveyor 4, effectively preventing multiple packaging boxes from appearing on the first belt conveyor 2 at the same time, thereby improving the accuracy of packaging box inspection.

[0035] Furthermore, this application also proposes a shielding frame 17, which is connected to the upper ends of two first mounting plates 1, and the top wall of the shielding frame 17 has a gap between it and the first belt conveyor 2 for the workpiece to pass through.

[0036] This technical solution, by setting a shielding frame 17 with a defined gap above the first belt conveyor 2, can effectively prevent external objects from falling onto the first belt conveyor 2, thereby affecting the detection of the packaging boxes located on the first belt conveyor 2 at that time.

[0037] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A device for rejecting defective packaged products, characterized in that, The system includes a first mounting plate, a first belt conveyor mechanism, a second mounting plate, and a second belt conveyor mechanism. Two first mounting plates are spaced apart. The first belt conveyor mechanism is located between the two first mounting plates. One of the first mounting plates has a first notch containing a weighing scale. The weighing scale is located between and within the first belt conveyor mechanism. The weighing end of the weighing scale is slidably fitted against the bottom end of the upper conveyor belt of the first belt conveyor mechanism. Two second mounting plates are arranged side-by-side with the two first mounting plates. The second conveyor mechanism is located between the two second mounting plates. One of the second mounting plates has a pushing component, and the other second mounting plate has a collecting component at its end away from the pushing component. The upper end of the second conveyor mechanism is on the same horizontal plane as the upper end of the second mounting plate.

2. The defective packaging rejection device according to claim 1, characterized in that, The pushing assembly includes a mounting block, a cylinder, and a push plate. The mounting block is connected to the upper end of one of the second mounting plates. The mounting block has a first through hole. The cylinder is fixedly installed in the first through hole. The telescopic rod of the cylinder is horizontally arranged and connected to the push plate. The cylinder can push the push plate to move above the second belt conveyor mechanism.

3. The defective packaging rejection device according to claim 2, characterized in that, The collecting component includes a guide block, which is connected to one end of another second mounting plate away from the push plate. The guide block has a first through groove at one end facing the second mounting plate, and a collecting unit is detachably provided below the guide block.

4. The defective packaging rejection device according to claim 3, characterized in that, It also includes a protective plate, which is connected to the upper end of the guide block, and the protective plate is inclined from top to bottom toward the end of the guide block away from the second mounting plate.

5. The defective packaging rejection device according to claim 3, characterized in that, The collection unit includes a collection box with an opening at the top. Limiting plates are vertically provided on both sides of the guide block. The collection box can slide between the two limiting plates. Both ends of the collection box are slidably fitted to the two limiting plates. An installation shaft is rotatably provided at the end of the guide block away from the second mounting plate. A clamping plate is provided on the installation shaft. The clamping plate can rotate to fit against the collection box.

6. The defective packaging rejection device according to claim 1, characterized in that, It also includes two third mounting plates, the two second mounting plates are spaced apart and located at the end of the first mounting plate away from the second mounting plate, and a stepping belt conveyor mechanism is provided between the two second mounting plates.

7. The defective packaging rejection device according to claim 1, characterized in that, It also includes a shielding frame, which is connected to the upper ends of the two first mounting plates, and the top wall of the shielding frame has a gap between it and the first belt conveyor mechanism for the workpiece to pass through.