A packaging bag conveying unit

Abstract

This utility model relates to the field of packaging bag production technology, and provides a packaging bag conveying unit, including a first conveying section and a rejection mechanism. The first conveying section includes a first end and a second end, which are arranged sequentially along the packaging bag conveying direction. The second end is provided with a first rejection position, and the rejection mechanism is arranged correspondingly to the first rejection position. A first conveyor belt is sleeved on the first conveying section. A first pressing component is provided above the first conveyor belt near the first rejection position. The first pressing component and the rejection mechanism are arranged sequentially along the packaging bag conveying direction. The first pressing component presses against the packaging bag conveyed on the first conveyor belt. Both ends of the first pressing component are provided with swing arms. Side plates are provided on both sides of the first conveying section along the packaging bag conveying direction. The swing arm includes a head and a tail. The head of the swing arm is connected to the end of the first pressing component, and the tail of the swing arm is rotatably connected to the side plate.

Description

Technical Field

[0001] This utility model belongs to the field of packaging bag production technology, and in particular relates to a packaging bag conveying unit. Background Technology

[0002] Currently, in the automated production process of packaging bags, due to factors such as production technology or raw materials, some products with quality defects are inevitably produced. To ensure the overall quality of the final product, a dedicated defective product rejection system is usually required on the production line. The commonly used technical solution is to open rejection ports at key positions on the product conveyor. When the conveyor belt accurately transports the detected defective product to the corresponding position of the rejection port, the rejection mechanism will immediately start to execute the rejection action. Specifically, the rejection mechanism applies a downward force, causing the defective product to fall into a designated collection container or waste area through the rejection port. However, in the actual rejection process, it has been found that when the defective product is subjected to a downward force, due to the characteristics of its thin structure, the rear end of the product will exhibit a significant upward warping phenomenon under the action of inertia. This unintended warping deformation not only causes the product's movement trajectory to deviate, but may also cause the product to collide or get stuck with the edge of the rejection port during the rejection process, seriously affecting the accuracy and reliability of the rejection operation, and may even interfere with the continuous conveying of subsequent normal products.

[0003] To solve the above-mentioned technical problems, this utility model designs a packaging bag conveying unit. Utility Model Content

[0004] This utility model provides a packaging bag conveying unit, which aims to solve the problem of warping and deformation of packaging bags during the rejection process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a packaging bag conveying unit, comprising a first conveying section and a rejection mechanism. The first conveying section includes a first end and a second end, which are sequentially arranged along the packaging bag conveying direction. The second end is provided with a first rejection position. The rejection mechanism is correspondingly arranged with the first rejection position. A first conveyor belt is sleeved on the first conveying section. A first pressing component is provided above the first conveyor belt near the first rejection position. The first pressing component and the rejection mechanism are sequentially arranged along the packaging bag conveying direction. The first pressing component presses against the packaging bag conveyed on the first conveyor belt. Swing arms are provided at both ends of the first pressing component. Side plates are provided on both sides of the first conveying section along the packaging bag conveying direction. The swing arm includes a head and a tail. The head of the swing arm is connected to the end of the first pressing component, and the tail of the swing arm is rotatably connected to the side plate. When the swing arm rotates relative to the side plate, the first pressing component can move between a working position close to the first conveying section and a raised position away from the first conveying section.

[0006] Based on the above technical solution, an elastic element is provided between the swing arm and the side plate. When the swing arm rotates relative to the side plate, the elastic element is used to drive the swing arm to rotate so that the first pressing assembly moves from the lifted position to the working position.

[0007] Furthermore, a crossbar is provided between the two swing arms, and the crossbar extends perpendicular to the direction of bag conveying.

[0008] Furthermore, the side plate is provided with a clearance groove, and a limiting wheel is provided between the head of the swing arm and the end of the first pressing assembly. When the first pressing assembly is in the working position, the limiting wheel is located in the clearance groove.

[0009] Based on the above technical solution, the packaging bag conveying unit also includes a second conveying section. A second rejection position is provided between the first conveying section and the second conveying section. The second rejection position and the first rejection position are arranged sequentially along the packaging bag conveying direction. A rejection mechanism is provided above the second rejection position. A second conveyor belt is sleeved on the second conveying section.

[0010] Furthermore, a second pressing component is provided above the second conveyor belt near the second rejection position in the second conveying section. The second pressing component and the rejection mechanism corresponding to the second rejection position are arranged sequentially along the bag conveying direction. The second pressing component presses against the bag conveyed on the second conveyor belt.

[0011] Furthermore, both the first pressing assembly and the second pressing assembly include a rotating shaft and a rotating pressure roller. The rotating shaft extends perpendicular to the direction of bag conveying, and the rotating pressure roller is sleeved on the rotating shaft and rotates with the rotation of the rotating shaft. The linear velocity of the rotating pressure roller is the same as the running speed of the first conveyor belt and the second conveyor belt.

[0012] Based on the above technical solution, the number of rotating pressure rollers is multiple, and the multiple rotating pressure rollers can move relative to the rotating shaft to adjust the distance between adjacent rotating pressure rollers.

[0013] Furthermore, the packaging bag conveying unit also includes a drive assembly, which includes a drive motor. The first conveying section and the second conveying section are respectively provided with a first active roller and a second active roller. The drive motor is connected to one end of the first active roller and the second active roller via a belt. The other end of the first active roller is provided with a first drive engagement member between it and the rotating shaft of the first pressing assembly, and the other end of the second active roller is provided with a second drive engagement member between it and the rotating shaft of the second pressing assembly.

[0014] Based on the above technical solution, the first driving engagement component includes a first driving wheel and a first driven wheel. The first driving wheel is located at the other end of the first driving roller shaft, and the first driven wheel is located at the end of the rotating shaft of the first pressing assembly. The first driving wheel and the first driven wheel mesh with each other.

[0015] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0016] In this invention, packaging bags are conveyed on the first conveyor belt of the first conveyor section. When a packaging bag has a defect and needs to be rejected, the rejection mechanism applies a downward force to the front end of the packaging bag when the defective packaging bag reaches the first rejection position. The packaging bag is rejected below the first rejection position as the first conveyor belt moves. The first pressing component can press the rear end of the packaging bag firmly onto the first conveyor belt, preventing the rear end of the packaging bag from tilting up or the entire packaging bag from shifting, making the rejection of the packaging bag smoother and improving rejection efficiency. The first pressing component is connected to the side plates on both sides of the first conveyor section through swing arms at both ends, and can rotate relative to the side plates, so that the first pressing component can rotate and lift away from the first conveyor section, moving from the working position to the lifted position, which is convenient for operators to adjust or maintain the first pressing component. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a packaging bag conveying unit provided by this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the packaging bag conveying unit from another perspective provided by this utility model;

[0020] Figure 3 This utility model provides Figure 2 An enlarged structural diagram of part A shown in the figure;

[0021] Figure 4 This is a schematic diagram of the packaging bag conveying unit from another perspective provided by this utility model.

[0022] In the diagram: 1. First conveyor section; 11. First end; 12. Second end; 13. First rejection position; 14. First conveyor belt; 15. First clamping assembly; 16. Swing arm; 161. Head; 162. Tail; 163. Limiting wheel; 17. Side plate; 171. Avoidance groove; 18. Crossbar; 19. Elastic element; 2. Rejection mechanism; 21. Crossbeam; 22. Driving component; 23. Rejection plate; 3. Second conveyor section; 31. Second rejection position; 32. Second conveyor belt; 33. Second clamping assembly; 331. Rotating shaft; 332. Rotating pressure roller; 4. Driving assembly; 41. Drive motor; 42. First driving mating component; 421. First driving wheel; 422. First driven wheel; 43. Second driving mating component; 431. Second driving wheel; 432. Second driven wheel; 5. First driving roller shaft; 6. Second driving roller shaft. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and examples:

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "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 utility model 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 utility model.

[0027] Combination Figure 1As shown, this embodiment of the present disclosure provides a packaging bag conveying unit, including a first conveying section 1 and a rejection mechanism 2. The first conveying section 1 includes a first end 11 and a second end 12, which are arranged sequentially along the packaging bag conveying direction. The second end 12 is provided with a first rejection position 13. The rejection mechanism 2 is correspondingly arranged with the first rejection position 13. A first conveyor belt 14 is sleeved on the first conveying section 1. A first pressing component 15 is provided above the first conveyor belt 14 near the first rejection position 13. The first pressing component 15 and the rejection mechanism 2 are arranged sequentially along the packaging bag conveying direction. The first pressing assembly 15 presses against the packaging bag conveyed on the first conveyor belt 14. The first pressing assembly 15 is provided with swing arms 16 at both ends. The first conveying section 1 is provided with side plates 17 on both sides along the conveying direction of the packaging bag. The swing arm 16 includes a head 161 and a tail 162. The head 161 of the swing arm 16 is connected to the end of the first pressing assembly 15, and the tail 162 of the swing arm 16 is rotatably connected to the side plate 17. When the swing arm 16 rotates relative to the side plate 17, the first pressing assembly 15 can move between a working position close to the first conveying section 1 and a raised position away from the first conveying section 1.

[0028] Using the packaging bag conveying unit provided in this embodiment, the packaging bag is conveyed on the first conveyor belt 14 of the first conveying section 1. When a packaging bag has a defect and needs to be rejected, the rejection mechanism 2 applies a downward force to the front end of the packaging bag when the defective packaging bag reaches the first rejection position 13. The packaging bag is rejected below the first rejection position 13 as the first conveyor belt 14 moves. The first pressing component 15 can press the rear end of the packaging bag onto the first conveyor belt 14 to prevent the rear end of the packaging bag from tilting up or the entire packaging bag from shifting, making the rejection of the packaging bag smoother and improving the rejection efficiency. The first pressing component 15 is connected to the side plates 17 on both sides of the first conveying section 1 through the swing arms 16 at both ends, and can rotate relative to the side plates 17 so that the first pressing component 15 can rotate and lift in a direction away from the first conveying section 1, moving from the working position to the lifted position, which is convenient for the operator to adjust or maintain the first pressing component 15.

[0029] Based on the above technical solutions, such as Figure 1 As shown, an elastic element 19 is provided between the swing arm 16 and the side plate 17. When the swing arm 16 rotates relative to the side plate 17, the elastic element 19 is used to drive the swing arm 16 to rotate so that the first pressing assembly 15 moves from the lifted position to the working position.

[0030] Specifically, the elastic element 19 can be a spring or a rubber band, as long as it can provide an elastic effect so that the swing arm 16 returns to its original position, thereby driving the first pressing component 15 back to its original position. No limitation is made here.

[0031] Furthermore, such as Figure 1 As shown, a crossbar 18 is provided between the two swing arms 16, and the crossbar 18 extends in a direction perpendicular to the conveying direction of the packaging bag.

[0032] Specifically, the two ends of the crossbar 18 are connected to the middle positions of the swing arms 16 on both sides. The crossbar 18 is designed to be easy for the operator to grip. After gripping the crossbar 18, the operator pulls it away from the first conveying section 1, causing the tails 162 of the swing arms 16 on both sides to rotate relative to the side plate 17, so that the first pressing assembly 15 moves away from the first conveying section 1 and is raised to a height that is easy for the operator to operate.

[0033] Furthermore, such as Figure 2 and Figure 3 As shown, the side plate 17 is provided with a clearance groove 171, and a limiting wheel 163 is provided between the head 161 of the swing arm 16 and the end of the first pressing assembly 15. When the first pressing assembly 15 is in the working position, the limiting wheel 163 is located in the clearance groove 171.

[0034] Specifically, when the first pressing component 15 moves from the raised position to the working position, the limiting wheel 163 engages with the avoidance groove 171, so that the swing arm 16 no longer rotates downward, fixing the height of the first pressing component 15, so that the pressing force of the first pressing component 15 relative to the first conveyor belt 14 is appropriate, and avoiding excessive pressing force from affecting the conveying of the packaging bag.

[0035] Based on the above technical solutions, such as Figure 1 As shown, the packaging bag conveying unit also includes a second conveying section 3. A second rejection position 31 is provided between the first conveying section 1 and the second conveying section 3. The second rejection position 31 and the first rejection position 13 are arranged sequentially along the packaging bag conveying direction. A rejection mechanism 2 is provided above the second rejection position 31. A second conveyor belt 32 is fitted onto the second conveying section 3.

[0036] Furthermore, such as Figure 1 As shown, a second pressing component 33 is provided above the second conveyor belt 32 near the second rejection position 31 in the second conveying section 3. The second pressing component 33 and the rejection mechanism 2 corresponding to the second rejection position 31 are arranged sequentially along the packaging bag conveying direction. The second pressing component 33 presses against the packaging bag conveyed on the second conveyor belt 32.

[0037] The packaging bag is conveyed on the second conveyor belt 32 of the second conveyor section 3. When a packaging bag has a defect and needs to be rejected, the rejection mechanism 2 can apply a downward force to the front end of the packaging bag when the defective packaging bag reaches the second rejection position 31. The packaging bag is rejected below the second rejection position 31 as the second conveyor belt 32 moves. The second pressing component 33 can press the rear end of the packaging bag onto the second conveyor belt 32 to prevent the rear end of the packaging bag from tilting up or the entire packaging bag from shifting, making the rejection of the packaging bag smoother and improving the rejection efficiency.

[0038] Furthermore, such as Figure 2 and Figure 3 As shown, the first pressing assembly 15 and the second pressing assembly 33 both include a rotating shaft 331 and a rotating pressure roller 332. The rotating shaft 331 extends along a direction perpendicular to the conveying direction of the packaging bag. The rotating pressure roller 332 is sleeved on the rotating shaft 331 and rotates with the rotation of the rotating shaft 331. The linear velocity of the rotating pressure roller 332 is the same as the running speed of the first conveyor belt 14 and the second conveyor belt 32.

[0039] Specifically, the rotating pressure roller 332 works in conjunction with the first conveyor belt 14 and the second conveyor belt 32 to press the packaging bag between them. During the rotation of the rotating shaft 331, the rotating pressure roller 332 is driven to rotate simultaneously. The linear speed of the rotating pressure roller 332 is the same as the running speed of the first conveyor belt 14 and the second conveyor belt 32. Together, they smoothly convey the packaging bag forward or complete the rejection action smoothly.

[0040] Based on the above technical solutions, such as Figure 1 and Figure 2 As shown, there are multiple rotating pressure rollers 332, and the multiple rotating pressure rollers 332 can move relative to the rotating shaft 331 to adjust the distance between adjacent rotating pressure rollers 332.

[0041] Specifically, the first conveying section 1 is equipped with multiple conveying channels, and multiple rotating pressure rollers 332 are correspondingly arranged in each conveying channel. Two rotating pressure rollers 332 are evenly distributed within each conveying channel. When a packaging bag passes over the rotating pressure rollers 332, the two rollers 332 press evenly against the bag, resulting in a more uniform force and smoother conveying. Furthermore, the rotating pressure rollers 332 can move relative to the rotating shaft 331, allowing adjustment of their position according to the size of the packaging bag or the width of the conveying channel, thus accommodating different sizes of packaging bags. The swing arm 16 allows the first pressing assembly 15 to move to the raised position, making it easier for the operator to adjust the rotating pressure rollers 332 on the rotating shaft 331.

[0042] Furthermore, such as Figure 4As shown, the packaging bag conveying unit also includes a drive assembly 4, which includes a drive motor 41. The first conveying section 1 and the second conveying section 3 are respectively provided with a first active roller 5 and a second active roller 6. The drive motor 41 is connected to one end of the first active roller 5 and the second active roller 6 via belts. The other end of the first active roller 5 is provided with a first drive engagement member 42 between it and the rotating shaft 331 of the first pressing assembly 15. The other end of the second active roller 6 is provided with a second drive engagement member 43 between it and the rotating shaft 331 of the second pressing assembly 33.

[0043] Specifically, the drive motor 41 drives the first active roller shaft 5 and the second active roller shaft 6 to rotate simultaneously, ensuring that the running speeds of the first transmission belt and the second transmission belt are the same or similar. The first active roller shaft 5 and the second active roller shaft 6 drive the rotating shafts 331 of the first pressing assembly 15 and the second pressing assembly 33 to rotate simultaneously through the first driving engagement component 42 and the second driving engagement component 43, respectively, ensuring that the rotation speeds of the first pressing assembly 15 and the second pressing assembly 33 are the same or similar. This allows for better coordination with the first conveyor belt 14 and the second conveyor belt 32, enabling the packaging bag to pass smoothly when entering the second conveyor belt 32 from the first conveyor belt 14, avoiding slippage or jamming, and improving the stability of the conveying process.

[0044] Based on the above technical solutions, such as Figure 4 As shown, the first driving engagement component 42 includes a first driving wheel 421 and a first driven wheel 422. The first driving wheel 421 is located at the other end of the first driving roller shaft 5, and the first driven wheel 422 is located at the end of the rotating shaft 331 of the first pressing assembly 15. The first driving wheel 421 and the first driven wheel 422 mesh with each other.

[0045] Specifically, during the operation of the drive assembly 4, the drive motor 41 drives the first active roller shaft 5 and the second active roller shaft 6 to rotate simultaneously. The first active roller shaft 5 and the second active roller shaft 6 respectively drive the first active wheel 421 and the second active wheel 431 to rotate simultaneously. The first active wheel 421 and the second active wheel 431 respectively drive the first driven wheel 422 and the second driven wheel 432 to rotate simultaneously, thereby driving the rotating shaft 331 of the first pressing assembly 15 and the second pressing assembly 33 to rotate simultaneously.

[0046] Based on the above technical solutions, such as Figure 1As shown, the rejection mechanism 2 includes a crossbeam 21, a drive member 22, and a rejection plate 23. The crossbeam 21 extends along a direction perpendicular to the conveying direction of the thin product. The drive member 22 is disposed on the crossbeam 21 and can move up and down relative to the crossbeam 21. The rejection plate 23 is connected to the drive member 22.

[0047] When the drive unit 22 moves downward relative to the crossbeam 21, the rejection plate 23 contacts the thin product to be rejected and rejects the thin product below the first rejection position 13 or the second rejection position 31. The drive unit 22 can be a cylinder, hydraulic cylinder, or motor, etc. The drive unit 22 is located on the crossbeam 21 and can slide relative to the crossbeam 21, thereby moving the position of the rejection plate 23 and adjusting the spacing between multiple rejection plates 23. The rejection plate 23 can be a straight plate or an arc-shaped plate.

[0048] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A packaging bag conveying unit, characterized in that, The system includes a first conveying section and a rejection mechanism. The first conveying section includes a first end and a second end, which are arranged sequentially along the bag conveying direction. The second end has a first rejection position, and the rejection mechanism is arranged corresponding to the first rejection position. A first conveyor belt is sleeved on the first conveying section. A first pressing component is provided above the first conveyor belt near the first rejection position. The first pressing component and the rejection mechanism are arranged sequentially along the bag conveying direction. The first pressing component presses against the bag being conveyed on the first conveyor belt. Both ends of the first pressing component have swing arms. Side plates are provided on both sides of the first conveying section along the bag conveying direction. Each swing arm includes a head and a tail. The head of the swing arm is connected to the end of the first pressing component, and the tail of the swing arm is rotatably connected to the side plate. When the swing arm rotates relative to the side plate, the first pressing component can move between a working position close to the first conveying section and a raised position away from the first conveying section.

2. The packaging bag conveying unit according to claim 1, characterized in that, An elastic element is provided between the swing arm and the side plate. When the swing arm rotates relative to the side plate, the elastic element is used to drive the swing arm to rotate so that the first pressing assembly moves from the lifted position to the working position.

3. The packaging bag conveying unit according to claim 2, characterized in that, A crossbar is provided between the two swing arms, and the crossbar extends in a direction perpendicular to the conveying direction of the packaging bag.

4. The packaging bag conveying unit according to claim 1, characterized in that, The side plate is provided with a clearance groove, and a limiting wheel is provided between the head of the swing arm and the end of the first pressing component. When the first pressing component is in the working position, the limiting wheel is located in the clearance groove.

5. The packaging bag conveying unit according to claim 1, characterized in that, It also includes a second conveying section, with a second rejection position between the first and second conveying sections. The second rejection position and the first rejection position are arranged sequentially along the conveying direction of the packaging bag. A rejection mechanism is provided above the second rejection position. The second conveying section is fitted with a second conveyor belt.

6. The packaging bag conveying unit according to claim 5, characterized in that, A second pressing component is provided above the second conveyor belt near the second rejection position in the second conveying section. The second pressing component and the rejection mechanism corresponding to the second rejection position are arranged sequentially along the bag conveying direction. The second pressing component presses against the bag conveyed on the second conveyor belt.

7. The packaging bag conveying unit according to claim 6, characterized in that, Both the first and second pressing components include a rotating shaft and a rotating pressure roller. The rotating shaft extends perpendicular to the direction of bag conveying. The rotating pressure roller is sleeved on the rotating shaft and rotates with the rotation of the rotating shaft. The linear velocity of the rotating pressure roller is the same as the running speed of the first and second conveyor belts.

8. The packaging bag conveying unit according to claim 7, characterized in that, The number of rotating pressure rollers is multiple, and the multiple rotating pressure rollers can move relative to the rotating shaft to adjust the distance between adjacent rotating pressure rollers.

9. The packaging bag conveying unit according to any one of claims 6 to 8, characterized in that, It also includes a drive assembly, which includes a drive motor. The first conveying section and the second conveying section are respectively provided with a first active roller and a second active roller. The drive motor is connected to one end of the first active roller and the second active roller via a belt. The other end of the first active roller is provided with a first drive engagement member between it and the rotating shaft of the first pressing assembly. The other end of the second active roller is provided with a second drive engagement member between it and the rotating shaft of the second pressing assembly.

10. The packaging bag conveying unit according to claim 9, characterized in that, The first driving engagement component includes a first driving wheel and a first driven wheel. The first driving wheel is located at the other end of the first driving roller shaft, and the first driven wheel is located at the end of the rotating shaft of the first pressing assembly. The first driving wheel and the first driven wheel mesh with each other.

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