Packaging bag removing device

Abstract

The utility model discloses a packaging bag removing device. The packaging bag removing device comprises a telescopic conveying mechanism and a turning plate material blocking mechanism. The telescopic conveying mechanism comprises a fixed roller, a movable roller, a conveying belt and a telescopic driving mechanism, the fixed roller and the movable roller are arranged in parallel, the fixed roller is installed on the rack, the movable roller is installed on a movable roller installation frame, the conveying belt bypasses the fixed roller and the movable roller, and the telescopic driving mechanism is installed on the conveying belt. The telescopic driving mechanism is used for driving the moving roller mounting frame to move in the front-back direction; the turning plate material blocking mechanism comprises a turning plate and a turning plate rotating mechanism, the turning plate is arranged behind the moving roller and installed on the moving roller installation frame, and the turning plate rotating mechanism is used for driving the turning plate to be switched between the turning-up state and the putting-down state. According to the utility model, the rejection reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag production, and particularly relates to a packaging bag rejection device. Background Art

[0002] In the traditional packaging bag production process, after the packaging bags are produced by the bag making machine, manual counting, stacking and packaging bundling are carried out. In this way, the production cost is high, the production efficiency is low, and it is difficult to ensure the counting accuracy and the bundling effect of the sorting.

[0003] If automated and mechanized stacking and packaging bundling of packaging bags are adopted, the rejection of defective products and the sampling inspection of samples are technical problems.

[0004] The applicant of the present utility model previously applied for a patent with the application number CN202111356078.3. This patent discloses a telescopic transmission mechanism and a packaging bag rejection device, and the telescopic transmission mechanism is applied to the rejection of packaging bags; when the packaging bags are normally transmitted, the moving rollers of the telescopic transmission mechanism move to the normal connection position with the upstream or downstream mechanism to ensure the normal transmission of the packaging bags; when it is necessary to reject defective or sample packaging bags, there is a certain gap between the moving rollers of the telescopic transmission mechanism and the upstream or downstream mechanism, and this gap serves as a rejection channel for rejecting defective or sample packaging bags. Therefore, the packaging bag rejection device of this patent can take into account both the normal transmission and the rejection effect of the packaging bags, and the width of the rejection channel is set more flexibly. However, due to the inertia of the packaging bags during transportation, the packaging bags may rush forward through the rejection channel, resulting in unsuccessful rejection. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a packaging bag rejection device that can automatically and accurately reject defective or sample packaging bags and improve the reliability of rejection.

[0006] In order to achieve the above purpose, the technical solution adopted by the present utility model is:

[0007] A packaging bag rejection device, the packaging bag rejection device includes a telescopic transmission mechanism and a flap baffle mechanism; the telescopic transmission mechanism includes a fixed roller, a moving roller, a transmission belt and a telescopic drive mechanism, the fixed roller and the moving roller are arranged in parallel, the fixed roller is installed on the frame, the moving roller is installed on the moving roller mounting frame, the transmission belt bypasses the fixed roller and the moving roller, and the telescopic drive mechanism is used to drive the moving roller mounting frame to move in the front-rear direction; the flap baffle mechanism includes a flap and a flap rotation mechanism, the flap is arranged behind the moving roller and installed on the moving roller mounting frame, and the flap rotation mechanism is used to drive the flap to switch between the raised state and the lowered state.

[0008] As a preferred technical solution, the flap rotation mechanism includes a rotating shaft and a push rod. The rotating shaft is rotatably installed on the moving roller mounting bracket, the flap is installed on the rotating shaft, and the push rod is used to push the rotating shaft to rotate.

[0009] As a preferred technical solution, the flap rotation mechanism further includes a push rod cylinder. One end of the push rod is connected to the rotating shaft, and the other end of the push rod is connected to the push rod cylinder.

[0010] As a preferred technical solution, one end of the push rod is connected to the rotating shaft, the other end of the push rod is connected to a roller and abuts against the frame, and the push rod is connected to the frame through a tension spring.

[0011] As a preferred technical solution, the flap is axially movably installed on the rotating shaft along the axial direction of the rotating shaft.

[0012] As a preferred technical solution, the telescopic driving mechanism is a cylinder, a hydraulic cylinder, an electric cylinder, a motor belt transmission mechanism, a motor chain transmission mechanism, a nut-screw transmission mechanism, a gear-rack transmission mechanism or a linear motor, and the moving end of the telescopic driving mechanism is connected to the moving roller mounting bracket.

[0013] As a preferred technical solution, the moving roller mounting bracket is installed on the frame through a sliding mechanism.

[0014] As a preferred technical solution, the conveyor belt is an elastic conveyor belt.

[0015] As a preferred technical solution, the telescopic conveyor mechanism further includes a secondary fixed roller and a secondary moving roller. The secondary fixed roller and the secondary moving roller are arranged parallel to the fixed roller and the moving roller. The secondary fixed roller is installed on the frame, the secondary moving roller is installed on the moving roller mounting bracket, the fixed roller is located in front of the moving roller, the secondary fixed roller is located behind the secondary moving roller, and the conveyor belt bypasses the fixed roller and the moving roller and then bypasses the secondary moving roller and the secondary fixed roller.

[0016] As a preferred technical solution, the packaging bag rejection device further includes a blowing device arranged above the flap baffle mechanism.

[0017] As a preferred technical solution, the flap baffle mechanism is connected to the cutting outlet of the packaging bag making machine.

[0018] Advantages of the present utility model:

[0019] The present utility model utilizes the gap between the moving roller moving forward and the upstream mechanism as the rejection channel. At the same time, the flap flips upward to block the packaging bag from rushing forward through the rejection channel, ensuring that the packaging bag falls from the rejection channel, thereby realizing the rejection of defective or sample packaging bags and improving the rejection reliability. Description of the drawings

[0020] Figure 1 It is a schematic structural diagram of the packaging bag rejection device in Embodiment 1 (normal transmission state of the packaging bag);

[0021] Figure 2 It is a schematic structural diagram of the packaging bag rejection device in Embodiment 1 (when rejecting defective or sample packaging bags);

[0022] Figure 3 It is a schematic structural diagram of the telescopic transmission mechanism in Embodiment 1 (only one conveyor belt is retained, extended state);

[0023] Figure 4 It is a schematic structural diagram of the telescopic transmission mechanism in Embodiment 1 (only one conveyor belt is retained, retracted state);

[0024] Figure 5 It is a schematic structural diagram of the flap baffle mechanism in Embodiment 2. Detailed implementation manners

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described below with reference to the accompanying drawings.

[0026] The connection in the present utility model means that two mechanisms are in contact or close to each other, so that the packaging bags of the upstream mechanism can be smoothly conveyed to the downstream mechanism.

[0027] The front in the present utility model refers to the downstream direction in which the transmission mechanism conveys the packaging bag forward, and the rear refers to the upstream direction in which the transmission mechanism conveys the packaging bag forward.

[0028] The defective products in the present utility model generally refer to defective products that occur during the preparation of the packaging bag, such as cutting errors, printing errors, unqualified heat-sealed edges, etc. The samples in the present utility model refer to the packaging bags extracted during the sampling inspection of the packaging bag.

[0029] Embodiment 1

[0030] As Figures 1 to 4 shown, a packaging bag rejection device, the packaging bag rejection device includes a telescopic transmission mechanism and a flap baffle mechanism.

[0031] As Figure 3 and Figure 4As shown, the telescopic transmission mechanism includes a fixed roller 1, a moving roller 2, a transmission belt 3, and a telescopic driving mechanism 4. The fixed roller 1 and the moving roller 2 are arranged in parallel. The fixed roller 1 is installed on a frame 5, and the moving roller 2 is installed on a moving roller mounting bracket 6. The transmission belt 3 bypasses the fixed roller 1 and the moving roller 2. The telescopic driving mechanism 4 is used to drive the moving roller mounting bracket 6 to move in the front-back direction. The telescopic driving mechanism 4 drives the moving roller mounting bracket 6 to move in the front-back direction, thereby driving the moving roller 2 to move in the front-back direction, enabling the telescopic transmission mechanism to switch between the extended state and the retracted state. When the telescopic transmission mechanism is in the retracted state, a gap between the moving roller 2 and the upstream mechanism can form a rejection channel.

[0032] The telescopic driving mechanism 4 can be various conventional telescopic mechanisms such as a cylinder, a hydraulic cylinder, an electric cylinder, a motor belt drive mechanism, a motor chain drive mechanism, a nut-screw drive mechanism, a gear-rack drive mechanism, or a linear motor. In this embodiment, the telescopic driving mechanism 4 is a cylinder. The moving end of the telescopic driving mechanism 4 is connected to the moving roller mounting bracket 6.

[0033] To enhance the stability during movement, the moving roller mounting bracket 6 is installed on the frame 5 through a sliding mechanism 7.

[0034] When the telescopic transmission mechanism switches between the extended state and the retracted state, it will cause the transmission belt 3 to be tightened and loosened. If the retraction distance is too long, in the loose state, the transmission belt 3 may shift or fall off from the fixed roller 1 and the moving roller 2. The following two solutions can be adopted to solve this problem:

[0035] The first solution: The transmission belt can adopt an elastic transmission belt. The elastic transmission belt stretches when the telescopic transmission mechanism is in the extended state and returns to its original length when the telescopic transmission mechanism is in the retracted state.

[0036] The second solution: As shown in Figure 3 and Figure 4 , the telescopic transmission mechanism further includes a secondary fixed roller 8 and a secondary moving roller 9. The secondary fixed roller 8 and the secondary moving roller 9 are arranged in parallel with the fixed roller 1 and the moving roller 2. The secondary fixed roller 8 is installed on the frame 5, and the secondary moving roller 9 is installed on the moving roller mounting bracket 6. The fixed roller 1 is located in front of the moving roller 2, and the secondary fixed roller 8 is located behind the secondary moving roller 9. The transmission belt 3 bypasses the fixed roller 1 and the moving roller 2 and then bypasses the secondary moving roller 9 and the secondary fixed roller 8. Through this belt-wrapping method, when the telescopic transmission mechanism switches between the extended state and the retracted state, the transmission belt 3 will not be stretched or loosened, or the stretching or loosening of the transmission belt 3 is reduced, which not only ensures that the transmission belt 3 will not shift or fall off but also extends the service life of the transmission belt 3.

[0037] As shown in Figure 1 andFigure 2 As shown, the flap baffle mechanism includes a flap 10 and a flap rotation mechanism. The flap 10 is arranged behind the moving roller 2 and installed on the moving roller mounting frame 6. The flap rotation mechanism is used to drive the flap 10 to switch between the raised state and the lowered state. When the flap 10 is in the lowered state, the telescopic transmission mechanism is simultaneously in the extended state (as shown in Figure 1 ), which does not affect the transmission of the packaging bag on the telescopic transmission mechanism; when the flap 10 is in the raised state, the telescopic transmission mechanism is simultaneously in the retracted state (as shown in Figure 2 ), and a rejection channel 11 is formed by the gap between the moving roller 2 and the upstream mechanism. The flap 10 blocks the packaging bag 12 from rushing forward through the rejection channel 11, ensuring that the packaging bag 12 falls from the rejection channel 11.

[0038] In Embodiment 1, as one of the structural forms of the flap rotation mechanism, the flap rotation mechanism includes a rotating shaft 13 and a push rod 14. The rotating shaft 13 is rotatably installed on the moving roller mounting frame 6. The flap 10 is installed on the rotating shaft 13. The push rod 14 is used to push the rotating shaft 13 to rotate; one end of the push rod 14 is connected to the rotating shaft 13, the other end of the push rod 14 is connected to a roller 15 and abuts against the machine frame 5, and the push rod 14 is connected to the machine frame 5 through a tension spring 16. This structure utilizes the telescopic synchronization of the telescopic transmission mechanism to drive the flap 10 to be raised and lowered, without the need to separately set a driving power source, and the rotation of the flap 10 has good synchronization with the telescopic movement of the telescopic transmission mechanism.

[0039] In order to facilitate the adjustment of the left and right positions of the flap 10 to align it with the packaging bag, the flap 10 is axially movably installed on the rotating shaft 13 along the axial direction of the rotating shaft.

[0040] In Embodiment 1, the flap baffle mechanism is connected to the slitting outlet 17 of the packaging bag making machine. When the packaging bag is normally transmitted, the flap 10 is in the lowered state, and the telescopic transmission mechanism is simultaneously in the extended state, which does not affect the transmission of the packaging bag on the telescopic transmission mechanism; when it is necessary to reject defective or sample packaging bags, the flap 10 is in the raised state, the telescopic transmission mechanism is simultaneously in the retracted state, and a rejection channel 11 is formed by the gap between the moving roller 2 and the slitting outlet 17 of the packaging bag making machine. The flap 10 blocks the packaging bag 12 from rushing forward through the rejection channel 11, ensuring that the packaging bag 12 falls from the rejection channel 11. This way of setting the rejection channel 11 at the end position connected to the packaging bag making machine has the advantage that the packaging bag to be rejected is directly rejected after being slit, so that it does not enter the downstream mechanism, and the rejection effect is better than the way of setting the rejection channel in the downstream mechanism. Of course, the way of setting the rejection channel at other positions also belongs to the protection scope of the present invention.

[0041] The packaging bag rejecting device further includes a blowing device 18 disposed above the flap baffle mechanism. By blowing air at the packaging bag to be rejected through the blowing device 18, the stability of rejection is further improved.

[0042] Embodiment 2

[0043] The difference between Embodiment 2 and Embodiment 1 lies only in the structural form of the flap rotating mechanism, as Figure 5 shown. The flap rotating mechanism includes a rotating shaft 13 and a push rod 14. The rotating shaft 13 is rotatably mounted on the moving roller mounting bracket. The flap 10 is mounted on the rotating shaft 13. The push rod 14 is used to push the rotating shaft 13 to rotate. The flap rotating mechanism further includes a push rod cylinder 19. One end of the push rod 14 is connected to the rotating shaft 13, and the other end of the push rod 14 is connected to the push rod cylinder 19. This structure utilizes the push rod cylinder 19 to push the flap 10 to turn up and down.

[0044] The foregoing shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A packaging bag rejection device, characterized in that: The packaging bag removing device includes a telescopic transmission mechanism and a flap baffle mechanism; The telescopic transmission mechanism includes a fixed roller, a moving roller, a transmission belt and a telescopic driving mechanism. The fixed roller and the moving roller are arranged in parallel. The fixed roller is installed on the frame, the moving roller is installed on the moving roller mounting frame, the transmission belt bypasses the fixed roller and the moving roller, and the telescopic driving mechanism is used to drive the moving roller mounting frame to move in the front-rear direction; The flap baffle mechanism includes a flap and a flap rotating mechanism. The flap is arranged behind the moving roller and installed on the moving roller mounting frame, and the flap rotating mechanism is used to drive the flap to switch between the lifted state and the lowered state.

2. The bag rejecting device according to claim 1, wherein: The flap rotating mechanism includes a rotating shaft and a push rod. The rotating shaft is rotatably installed on the moving roller mounting frame, the flap is installed on the rotating shaft, and the push rod is used to push the rotating shaft to rotate.

3. The packaging bag rejection device according to claim 2, wherein: The flap rotating mechanism further includes a push rod cylinder. One end of the push rod is connected to the rotating shaft, and the other end of the push rod is connected to the push rod cylinder.

4. The bag removing device according to claim 2, characterized in that: One end of the push rod is connected to the rotating shaft, the other end of the push rod is connected to a roller and abuts against the frame, and the push rod is connected to the frame through a tension spring.

5. The bag rejection device according to claim 2, wherein: The flap is axially movably installed on the rotating shaft.

6. The bag removing device according to claim 1, wherein: The telescopic driving mechanism is a cylinder, a hydraulic cylinder, an electric cylinder, a motor belt transmission mechanism, a motor chain transmission mechanism, a nut-screw transmission mechanism, a gear-rack transmission mechanism or a linear motor, and the moving end of the telescopic driving mechanism is connected to the moving roller mounting frame.

7. The bag rejecting device according to claim 6, wherein: The moving roller mounting frame is installed on the frame through a sliding mechanism.

8. The packaging bag rejection device according to claim 1, characterized in that: The transmission belt is an elastic transmission belt.

9. The bag rejecting device according to claim 1, wherein: The telescopic transmission mechanism further includes a secondary fixed roller and a secondary moving roller. The secondary fixed roller and the secondary moving roller are arranged in parallel with the fixed roller and the moving roller. The secondary fixed roller is installed on the frame, the secondary moving roller is installed on the moving roller mounting frame, the fixed roller is located in front of the moving roller, the secondary fixed roller is located behind the secondary moving roller, and the transmission belt bypasses the fixed roller and the moving roller and then bypasses the secondary moving roller and the secondary fixed roller.

10. The bag rejection device according to claim 1, wherein: The packaging bag removing device further includes a blowing device arranged above the flap baffle mechanism.

11. The packaging bag rejection device according to any one of claims 1 to 10, characterized in that: The flap baffle mechanism is connected to the cutting outlet of the packaging bag making machine.

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