An exhaust device for a backsealing packaging machine

Abstract

The utility model relates to the technical field of the auxiliary structure of back seal packaging machine, and particularly relates to a back seal packaging machine exhaust device, and it clamps the packaging bag body, extrudes the gas in the packaging bag and prevents the occurrence of the drum bag phenomenon, comprising two material guiding components, clamping exhaust components and guide assemblies, the material guiding component is located above the clamping exhaust component, and the guide assembly is installed on the clamping exhaust component.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary structures for back-sealing packaging machines, and in particular to an exhaust device for a back-sealing packaging machine. Background Technology

[0002] A back-sealing packaging machine is an automated packaging equipment that uses back-sealing bag-making technology. It is mainly used for metering, bag making, and sealing processes of powders and granular materials (such as food, pharmaceuticals, and chemical products). It is suitable for loose, non-sticky granules such as food desiccants and granules, as well as counting and bagging operations of tablets (such as sugar-coated tablets and capsules). For example, a back-sealing packaging machine proposed in existing technology publication number CN214397555U includes a hydraulic telescopic rod. One end of the hydraulic telescopic rod is fixedly connected to a support plate. The top of the support plate is connected to a movable clamping plate. One end of the movable clamping plate is fixedly connected to a connecting slide rod. A connecting sleeve rod is sleeved on the surface of the connecting slide rod. One end of the connecting sleeve rod is fixedly connected to a support frame. One end of the support frame is internally threaded with an adjusting screw. One end of the adjusting screw is fixedly connected to an adjusting wheel. However, in existing technology, bag bulging often occurs during the bagging process. This phenomenon occurs because the venting after the material enters the packaging bag is not done well, resulting in a large amount of gas being sealed into the bag during sealing. Bulges can affect the rated capacity and aesthetic appearance of packaging bags. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an exhaust device for a back-sealing packaging machine that clamps the packaging bag, squeezes out the gas in the packaging bag, and prevents the bag from bulging.

[0004] This utility model discloses an exhaust device for a back-sealing packaging machine, comprising two guiding components, a clamping exhaust component, and a guiding assembly. The guiding components are located above the clamping exhaust component, and the guiding assembly is installed on the clamping exhaust component. Before packaging, the packaging bag with through holes at the top and bottom is wrapped around the guiding components. During the packaging process, as the packaging bag descends and passes under the guiding components, it is sealed into a tubular shape. The material falls from the guiding components into the packaging bag. Once the packaging weight is reached, the clamping exhaust component clamps the packaging bag, squeezing out the gas in the packaging bag to prevent bulging. Afterward, the top opening of the packaging bag is heat-sealed. The guiding assembly ensures stability during operation.

[0005] Preferably, the material guiding component includes a feed hopper and a discharge pipe. The bottom of the feed hopper is connected to the discharge pipe, and the feed hopper is set in an inverted cone shape. Before packaging, the packaging bag with through holes at the top and bottom is wrapped around the feed hopper. During the packaging process, the packaging bag moves downward and is sealed into a tubular package when it passes through the discharge pipe, ensuring the continuity of the packaging.

[0006] Preferably, it also includes multiple material distribution rods and a conical guide block. The multiple material distribution rods are axially and evenly installed on the inner wall of the discharge pipe, and the conical guide block is located in the middle of the discharge pipe and installed on the multiple material distribution rods. The material falls from the discharge pipe into the packaging bag, and the powder material is dispersed and knocked down by the material distribution rods and the conical guide block to ensure the quality of subsequent packaging.

[0007] Preferably, the clamping and venting component includes two upright plates, two electric telescopic rods, two movable plates, multiple telescopic rods, two clamping plates, two sets of springs, and two sets of contact plates. The upright plates are located on the left and right sides below the discharge pipe. Electric telescopic rods are installed on the outer walls of the upright plates. Movable plates are installed at the telescopic ends of the electric telescopic rods. Multiple telescopic rods are installed on the inner walls of the movable plates. Clamping plates are installed on the lowest telescopic rod. Contact plates are installed on the upper sets of telescopic rods. Springs are fitted on the outer walls of the telescopic rods. After the packaging weight is reached, the electric telescopic rods are activated to push the movable plates closer together, causing the telescopic rods to push the clamping plates to clamp the bottom of the packaging bag. At the same time, the contact plates are pushed to contact the left and right sides of the packaging bag. The contact plates compress the telescopic rods and springs, venting the gas in the packaging bag and preventing bulging. Afterward, the top opening of the packaging bag is heat-sealed.

[0008] Preferably, the guide assembly includes two sets of guide slide rods and two sets of connecting plates. Guide slide rods are slidably installed at the four corners of the upright plate. One end of the guide slide rod is connected to the outer wall of the moving plate, and the outer wall of the guide slide rod is connected to the connecting plate. When the moving plate moves, it drives the guide slide rods to slide on the upright plate, providing support and guidance, increasing structural strength, and ensuring stability.

[0009] Preferably, it also includes multiple vibrating blocks, which are alternately installed on the inner wall of the moving plate along with the telescopic rod; when venting, the vibrating blocks are activated to generate vibration, thereby completely expelling the air in the packaging bag and improving the venting effect.

[0010] Preferably, it also includes two arc-shaped support rods, which are installed on the front and rear sides of the bottom of the discharge pipe; the upper opening of the packaging bag will be opened by the action of the two arc-shaped support rods to form a narrow opening, during which the gas inside the packaging bag is discharged.

[0011] Preferably, the lengths of the plurality of telescopic rods gradually decrease from top to bottom; when clamping the packaging bag, the lowest telescopic rod contacts the packaging bag first, and then expels the air from the packaging bag from bottom to top, thereby improving the exhaust effect.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: Before packaging, the packaging bag with through holes at the top and bottom is wrapped around the material guiding component. During the packaging process, when the packaging bag moves down and passes under the material guiding component, it is sealed into a tubular package. The material falls into the packaging bag from the material guiding component. After reaching the packaging weight, the clamping and venting component clamps the packaging bag and squeezes out the gas in the packaging bag to prevent the bag from bulging. After that, the top opening of the packaging bag is heat-sealed. The guiding component can ensure the stability during operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view schematic diagram of the structure of this utility model; Figure 3 This is a front view structural diagram of the present invention; Figure 4 This is a front cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the left-side cross-sectional structure of this utility model; The following are labeled in the attached diagram: 1. Feed hopper; 2. Discharge pipe; 3. Dividing rod; 4. Conical guide block; 5. Vertical plate; 6. Electric telescopic rod; 7. Moving plate; 8. Telescopic rod; 9. Clamping plate; 10. Spring; 11. Contact plate; 12. Vibration block; 13. Guide slide rod; 14. Connecting plate; 15. Arc-shaped support rod. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0015] like Figures 1 to 5As shown, the bottom of the feed hopper 1 is connected to the discharge pipe 2. The feed hopper 1 is set in an inverted cone shape. Multiple material distribution rods 3 are axially and evenly installed on the inner wall of the discharge pipe 2. The conical guide block 4 is located in the middle of the discharge pipe 2 and is installed on the multiple material distribution rods 3. The upright plate 5 is located on the left and right sides below the discharge pipe 2. An electric telescopic rod 6 is installed on the outer wall of the upright plate 5. A moving plate 7 is installed on the telescopic end of the electric telescopic rod 6. Multiple telescopic rods 8 are installed on the inner wall of the moving plate 7. A clamping plate 9 is installed on the lowest telescopic rod 8. A contact plate 11 is installed on the upper multiple sets of telescopic rods 8. A spring 10 is fitted on the outer wall of the telescopic rod 8. A guide slide rod 13 is slidably installed at the four corners of the upright plate 5. One end of the guide slide rod 13 is connected to the outer wall of the moving plate 7. The outer wall of the guide slide rod 13 is connected to the connecting plate 14. Multiple vibration blocks 12 and telescopic rods 8 are alternately installed on the inner wall of the moving plate 7. Two arc-shaped support rods 15 are installed on the front and rear sides of the bottom of the discharge pipe 2. The length of the multiple telescopic rods 8 gradually decreases from top to bottom. Before packaging, the packaging bag with through holes at the top and bottom is wrapped around the feed hopper 1. During the packaging process, the packaging bag descends and is sealed into a tubular shape when passing through the discharge pipe 2, ensuring the continuity of packaging. The material falls into the packaging bag from the discharge pipe 2, and the powder material is dispersed and dropped by the separating rod 3 and the conical guide block 4 to ensure the quality of subsequent packaging. After reaching the packaging weight, the upper opening of the packaging bag will be opened by the action of two arc-shaped support rods 15, forming a narrow opening. During the opening process, the gas inside the packaging bag is discharged. The electric telescopic rod 6 is activated to push the moving plate 7 closer together, so that the telescopic rod 8 pushes the clamping plate 9 to the packaging bag. The bottom is clamped, and the contact plate 11 is pushed to contact the left and right sides of the packaging bag. The contact plate 11 compresses the telescopic rod 8 and the spring 10 to expel the gas in the packaging bag and prevent the bag from bulging. After that, the top opening of the packaging bag is heat-sealed. When clamping the packaging bag, the lowest telescopic rod 8 contacts the packaging bag first, and then the air in the packaging bag is expelled from the bottom up, which improves the exhaust effect. When the moving plate 7 moves, it drives the guide slide rod 13 to slide on the upright plate 5 to support and guide it, increase the structural strength and ensure stability. When venting, the vibration block 12 is activated to generate vibration, so that the air in the packaging bag is completely expelled, which improves the exhaust effect.

[0016] like Figures 1 to 5As shown, this utility model discloses an exhaust device for a back-sealing packaging machine. During operation, before packaging, the packaging bag with upper and lower through holes is wrapped around the feed hopper 1. During packaging, the packaging bag descends and is sealed into a tubular shape as it passes through the discharge pipe 2. The material falls into the packaging bag from the discharge pipe 2. The powder material is dispersed and knocked down by the separating rod 3 and the conical guide block 4. After reaching the packaging weight, the upper opening of the packaging bag is opened by the action of two arc-shaped support rods 15, forming a narrow opening. During this opening process, the gas inside the packaging bag is discharged. Start the electric telescopic rod 6 to push the moving plate 7 closer together, so that the telescopic rod 8 pushes the clamping plate 9 to clamp the bottom of the packaging bag. At the same time, push the contact plate 11 to contact the left and right sides of the packaging bag. The contact plate 11 compresses the telescopic rod 8 and the spring 10 to expel the gas in the packaging bag. When clamping the packaging bag, the lowest telescopic rod 8 contacts the packaging bag first, and then the air in the packaging bag is expelled from bottom to top. When venting, the vibrating block 12 is activated to generate vibration, so that the air in the packaging bag is completely expelled to prevent the bag from bulging. After that, the top opening of the packaging bag is heat-sealed.

[0017] The electric telescopic rod 6 and vibrating block 12 of the exhaust device of the back sealing packaging machine of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0018] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An exhaust device for a back-sealing packaging machine, characterized in that, It includes two guiding components, a clamping and venting component, and a guiding assembly. The guiding components are located above the clamping and venting component, and the guiding assembly is installed on the clamping and venting component. The guiding components include a feed hopper (1) and a discharge pipe (2). The bottom of the feed hopper (1) is connected to the discharge pipe (2), and the feed hopper (1) is set in an inverted cone shape. The clamping and venting component includes two vertical plates (5), two electric telescopic rods (6), two moving plates (7), multiple telescopic rods (8), two clamping plates (9), two sets of springs (10), and two sets of contact plates (11). The vertical plates (5) are located on the left and right sides below the discharge pipe (2), and electric telescopic rods (6) are installed on the outer wall of the vertical plates (5). The extension of the electric telescopic rods (6) is... A movable plate (7) is installed at the constricted end. Multiple telescopic rods (8) are installed on the inner wall of the movable plate (7). A clamp (9) is installed on the lowest telescopic rod (8). A contact plate (11) is installed on the upper multiple sets of telescopic rods (8). A spring (10) is fitted on the outer wall of the telescopic rod (8). The guide assembly includes two sets of guide slide rods (13) and two sets of connecting plates (14). Guide slide rods (13) are slidably installed at the four corners of the upright plate (5). One end of the guide slide rod (13) is connected to the outer wall of the movable plate (7), and the outer wall of the guide slide rod (13) is connected to the connecting plate (14). It also includes two arc-shaped support rods (15). The two arc-shaped support rods (15) are installed on the front and rear sides of the bottom of the discharge pipe (2).

2. The exhaust device for a back-sealing packaging machine as described in claim 1, characterized in that, It also includes multiple material distribution rods (3) and a conical guide block (4). The multiple material distribution rods (3) are axially and evenly installed on the inner wall of the discharge pipe (2). The conical guide block (4) is located in the middle of the discharge pipe (2) and is installed on the multiple material distribution rods (3).

3. The exhaust device for a back-sealing packaging machine as described in claim 1, characterized in that, It also includes multiple vibrating blocks (12), which are alternately installed on the inner wall of the movable plate (7) along with the telescopic rod (8).

4. The exhaust device for a back-sealing packaging machine as described in claim 1, characterized in that, The lengths of the multiple telescopic rods (8) gradually decrease from top to bottom.

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