A sealing device for a packaging sleeve bag machine

Abstract

The utility model belongs to packaging equipment technical field, specifically is a kind of sealing equipment for packaging sleeve bag machine, including base, be equipped with negative pressure conveying mechanism on base, be equipped with sealing mechanism in conveying direction, sealing mechanism contains pull bag mechanism, support rod, upper sealing copper strip and lower rubber strip, pull bag mechanism includes upper chuck, lower chuck, and moves the frame on base by guide rail a and slider a assembly, indirectly has tension spring between mobile frame and base, both ends slider a assembly rack a and pass through gear a synchronous relative movement, upper chuck and lower chuck are assembled on mobile frame by guide rail b and slider b, slider b assembly rack b and pass through gear b synchronous relative movement, base is slidably assembled bottom plate, support rod is assembled on bottom plate by guide rail c and slider c, slider c assembly rack c and pass through gear c synchronous relative movement, and the equipment is lifted bag mouth flatness by pull bag mechanism and support rod cooperation, and the sealing property is strengthened, and the demand of vacuum packaging is adapted.

Description

Technical Field

[0001] This utility model belongs to the field of packaging equipment technology, specifically a sealing device for a packaging bagging machine. Background Technology

[0002] Packaging bagging machines are devices that enable automatic bagging and packaging of goods. They are widely used in industries such as food, pharmaceuticals, and daily necessities. They can quickly complete processes such as bag picking, bagging, and sealing, improving packaging efficiency and reducing labor costs.

[0003] The existing bagging machine is mainly composed of parts such as a bag feeding mechanism, a bag picking device, a material conveying line, and a sealing mechanism. The working principle is as follows: the bag feeding mechanism conveys the roll or stack of packaging bags to the bag picking position, the bag picking device grabs a single bag and moves it to the bagging station; the opening component opens the bag opening, the material conveying line pushes the package to be packaged to the bag opening to complete the bagging, and then the sealing mechanism seals the bag opening.

[0004] The existing bagging machines have the following drawbacks: before sealing, the bag opening will be wrinkled due to the packaging material inside, resulting in an irregular sealing line during sealing. Moreover, the wrinkles are prone to forming sealing gaps, which seriously affects the airtightness of the packaging bag, especially failing to meet the stringent sealing performance requirements of the food and pharmaceutical industries. Therefore, a sealing device for packaging bagging machines is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing bagging machines, a sealing device for packaging bagging machines is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The sealing device for a packaging bagging machine of this utility model includes a base, a negative pressure conveying mechanism is provided on the base, and a sealing mechanism for sealing the opening of a packaging bag containing a product is provided in the conveying direction of the negative pressure conveying mechanism. The sealing mechanism includes a bag pulling mechanism located at both ends of the bag opening for flattening and preventing wrinkles. The bag pulling mechanism includes an upper clamp and a lower clamp. The sealing mechanism also includes a support rod driven by a driving device to move in opposite directions to extend the edge of the packaging bag opening towards the upper and lower clamps at both ends. It also includes an upper sealing copper strip and a lower adhesive strip driven by a driving device to heat seal the bag opening.

[0007] Preferably, the bag-pulling mechanism includes a movable frame slidably mounted on a base via a guide rail a and a slider a. One side of the movable frame is fixed to the slider a. A tension spring is connected between the movable frame and the base to pull the bag opening outward between the upper and lower clamps. The mechanism also includes a driving device for resetting the slider a. Both ends of the slider a are equipped with racks a, and the two racks a move synchronously relative to each other by meshing with gears a.

[0008] Preferably, the upper clamp and the lower clamp are slidably mounted on the movable frame via guide rail b and slider b. The upper clamp and the lower clamp are respectively mounted on their corresponding slider b. Both sliders b are equipped with racks b, and the two racks b move synchronously relative to each other by meshing with gear b, so that the upper clamp and the lower clamp move closer to each other to clamp the bag opening, or move away from each other to release the bag opening. The movable frame is equipped with a drive device to push the slider b to move.

[0009] Preferably, the base is provided with a bracket, and the bracket and the upper sealing copper strip and the lower adhesive strip on the base are driven by a driving device to move relative to each other to seal the bag opening.

[0010] Preferably, a base plate is slidably mounted on the base, and the support rod is slidably mounted on the base plate via a guide rail c and a slider c. The two support rods are respectively mounted on their corresponding sliders c. Each of the two sliders c is equipped with a rack c, and the two racks c move synchronously relative to each other by meshing with a gear c, so that the two support rods move closer or further apart. The base is equipped with a drive device to move the base plate, which is used to insert the support rod into the bag opening.

[0011] Preferably, the base plate is equipped with a vacuum tube, which is connected to an external vacuum pump via an air pipe. When the base plate approaches the packaging bag, the vacuum tube is inserted into the packaging bag to create a vacuum.

[0012] Preferably, the bracket and the base are respectively equipped with an upper vacuum sealing strip and a lower vacuum sealing strip via a driving device. The two move relative to each other after the vacuum tube is inserted into the packaging bag, squeezing the bag opening to assist in vacuuming.

[0013] Preferably, a pressure plate is mounted on the bracket via a drive device.

[0014] The beneficial effects of this utility model are:

[0015] This utility model provides a sealing device for a packaging bagging machine. Through the coordination of the bag pulling mechanism and the support rod, it achieves clamping and symmetrical outward pulling at both ends of the bag opening, improving the flatness of the bag opening, avoiding sealing defects caused by wrinkles, eliminating irregular sealing lines, and enhancing the sealing performance of the packaging bag. It is especially suitable for scenarios with strict airtightness requirements, such as food and pharmaceutical. For vacuum packaging needs, the design of the air extraction tube and the vacuum sealing strip can achieve vacuuming inside the bag, improving the adaptability of the equipment to different packaging needs. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a side view of the bag-pulling mechanism according to Embodiment 1 of this utility model;

[0018] Figure 2 This is a three-dimensional view of the support rod structure after combining Embodiment 1 and Embodiment 2 of this utility model;

[0019] Figure 3 This is a three-dimensional structural view of the bag-pulling mechanism according to Embodiment 1 of this utility model;

[0020] Figure 4 This is a perspective view of the rear structure of the bag-pulling mechanism according to Embodiment 1 of this utility model;

[0021] Figure 5 This is a three-dimensional view of the overall structure after combining Embodiment 1 and Embodiment 2 of this utility model;

[0022] Legend:

[0023] 1. Base; 2. Negative pressure conveying mechanism; 3. Sealing mechanism; 4. Support rod; 5. Bag pulling mechanism; 501. Upper clamp; 502. Lower clamp; 503. Guide rail a; 504. Slider a; 505. Moving frame; 506. Rack a; 507. Gear a; 508. Guide rail b; 509. Slider b; 5010. Rack b; 5011. Gear b; 6. Upper sealing copper strip; 7. Lower adhesive strip; 8. Support; 9. Base plate; 10. Guide rail c; 11. Slider c; 12. Rack c; 13. Gear c; 14. Vacuum tube; 15. Upper vacuum sealing strip; 16. Lower vacuum sealing strip; 17. Pressure plate; 18. Cylinder. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Specific implementation examples are given below.

[0026] Example 1:

[0027] Please see Figures 1-5The present invention discloses a sealing device for a packaging bagging machine, comprising a base 1, a negative pressure conveying mechanism 2 provided on the base 1, and a sealing mechanism 3 for sealing the opening of a packaging bag containing a product provided in the conveying direction of the negative pressure conveying mechanism 2. The sealing mechanism 3 includes a bag pulling mechanism 5 located at both ends of the bag opening for flattening and preventing wrinkles. The bag pulling mechanism 5 includes an upper clamp 501 and a lower clamp 502. The sealing mechanism 3 also includes a support rod 4 driven by a driving device to move in opposite directions to extend the edge of the packaging bag opening toward the upper clamp 501 and the lower clamp 502 at both ends. It also includes an upper sealing copper strip 6 and a lower adhesive strip 7 driven by a driving device to heat seal the bag opening.

[0028] The bag-pulling mechanism 5 includes a movable frame 505 slidably mounted on the base 1 via a guide rail a503 and a slider a504. One side of the movable frame 505 is fixed to the slider a504. A tension spring is connected between the movable frame 505 and the base 1 to pull the bag opening outward between the upper clamp 501 and the lower clamp 502. It also includes a driving device for driving the slider a504 to reset the movable frame 505. Each of the sliders a504 at both ends is equipped with a rack a506, and the two racks a506 move synchronously relative to each other by meshing with a gear a507. The upper clamp... The upper clamp 501 and the lower clamp 502 are slidably mounted on the movable frame 505 via the guide rail b508 and the slider b509. The upper clamp 501 and the lower clamp 502 are respectively mounted on the corresponding sliders b509. Each of the two sliders b509 is equipped with a rack b5010, and the two racks b5010 move synchronously relative to each other by meshing with the gear b5011, so that the upper clamp 501 and the lower clamp 502 move closer to each other to clamp the bag opening, or move further away from each other to release the bag opening. The movable frame 505 is equipped with a drive device to push the sliders b509 to move.

[0029] A base plate 9 is slidably mounted on the base 1. The support rods 4 are slidably mounted on the base plate 9 via guide rails c10 and sliders c11. Two support rods 4 are respectively mounted on their corresponding sliders c11. Each slider c11 is equipped with a rack c12, and the two racks c12 move synchronously relative to each other by meshing with a gear c13, causing the two support rods 4 to move closer or further apart. A drive device is mounted on the base 1 to move the base plate 9, allowing the support rods 4 to be inserted into the bag opening. During operation, the negative pressure conveying mechanism 2 transports the product-filled packaging bag to the sealing mechanism 3. Simultaneously, during this transport, the negative pressure conveying mechanism 2... The conveyor belt, through several holes, holds the packaging bags in place to prevent them from shifting during transport. Then, the base plate 9 is pushed by the drive unit, causing the support rods 4 to be horizontally inserted into the bag opening at an adjustable depth. The drive unit then pushes the slider c11, moving the rack c12 on it and simultaneously rotating the gear c13. The gear c13 synchronously drives another rack c12, causing the two support rods 4 to move away from each other and towards both ends of the bag opening. This extends the edges of the bag opening between the upper clamp 501 and the lower clamp 502, facilitating accurate clamping of the bag opening by the upper and lower clamps. Then, the drive unit pushes the slider b5... 09. Slider b509 moves, driving rack b5010 to move. Simultaneously, gear b5011 meshing with it rotates. Gear b5011 synchronously drives another rack b5010 to move, causing the upper clamp 501 and lower clamp 502 to move closer together to close and clamp the edge of the bag opening. Then, the push rod of the drive cylinder 18 retracts and no longer presses against slider a504. Before sealing, cylinder 18 continues to push slider a504, while simultaneously stretching the tension spring connected to the upper end of the moving frame 505 to store elastic potential energy. When the push rod of cylinder 18 retracts to the limit position, the tension spring releases the elastic potential energy and pulls the moving frame 505 to move, which is linked by gear a507 on both sides. The two movable frames 505 are pulled outward synchronously, and the upper clamp 501 and lower clamp 502 on them are pulled outward simultaneously, moving away from each other. The upper clamp 501 and lower clamp 502 at both ends pull the two ends of the bag opening to flatten the bag opening, so that the sealing surface of the bag opening is smooth and wrinkle-free during subsequent sealing, ensuring the airtightness of the packaging. Through the coordinated action of the bag pulling mechanism 5 and the support rod 4, the flexible tension of the tension spring and the synchronous transmission of the gear rack are used to improve the flatness of the bag opening, avoid sealing defects caused by bag opening wrinkles, eliminate irregular sealing lines caused by wrinkles, and improve the airtightness of the packaging bag. It is especially suitable for food and pharmaceutical packaging scenarios with strict requirements for airtightness.

[0030] Furthermore, a support 8 is provided on the base 1. The support 8 and the upper sealing copper strip 6 and the lower adhesive strip 7 on the base 1 are driven by a driving device to move relative to each other to seal the bag opening. During operation, after the bag opening is flattened, the control system triggers a heat sealing command. The support 8 and the driving device on the base 1 move synchronously. The upper sealing copper strip 6 descends and the lower adhesive strip 7 rises at the same speed. After contacting and clamping the bag opening, the upper sealing copper strip 6 is heated and stays to achieve film melting and sealing. After sealing, the upper sealing copper strip 6 and the lower adhesive strip 7 move away from each other and return to their original positions.

[0031] Furthermore, a pressure plate 17 is mounted on the support 8 via a drive device. During operation, before the bag opening is sealed, the drive device on the support 8 pushes the pressure plate 17 to press down vertically onto the top of the packaging bag. The air inside the bag is initially expelled through mechanical compression. The pressing height is adaptively adjusted according to the height of the packaged product, so as not to damage the product and reduce the amount of residual air inside the bag.

[0032] Example 2: Other features are the same as in Example 1. Since some products require vacuum sealing of the packaging bag during packaging, the following structure can be adaptively added to the above structure:

[0033] Please see Figure 2 ,

[0034] Furthermore, the base plate 9 is equipped with a vacuum tube 14, which is connected to an external vacuum pump via an air pipe. When the base plate 9 approaches the packaging bag, the vacuum tube 14 is inserted into the packaging bag to create a vacuum. The bracket 8 and the base 1 are respectively equipped with an upper vacuum sealing strip 15 and a lower vacuum sealing strip 16 via a driving device. The two move relative to each other after the vacuum tube 14 is inserted into the packaging bag, squeezing the bag opening to assist in creating a vacuum. During operation, when the bag opening is flattened, the movement of the base plate 9 will also synchronously drive the vacuum tube. 14 Insert the bag opening, and after the bag opening is flattened, the upper vacuum sealing strip 15 and the lower vacuum sealing strip 16 close, initially pressing and closing the bag opening to block the entry of external air. Then, the external vacuum pump works, and the air is drawn out of the packaging bag through the air extraction tube 14, so that the packaging bag is in a positive empty state. Then, the bottom plate 9 returns to its original position, the air extraction tube 14 leaves the packaging bag, and then the bag opening is sealed by the upper sealing copper strip 6 and the lower adhesive strip 7. Finally, the upper vacuum sealing strip 15 and the lower vacuum sealing strip 16 open and reset.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A sealing device for a packaging bagging machine, comprising a base (1), wherein a negative pressure conveying mechanism (2) is provided on the base (1), characterized in that: A sealing mechanism (3) for sealing the opening of a packaging bag containing a product is provided in the conveying direction of the negative pressure conveying mechanism (2). The sealing mechanism (3) includes a bag pulling mechanism (5) located at both ends of the bag opening for flattening and preventing wrinkles. The bag pulling mechanism (5) includes an upper clamp (501) and a lower clamp (502). The sealing mechanism (3) also includes a support rod (4) driven by a driving device to move in opposite directions to extend the edge of the packaging bag opening towards the upper clamp (501) and the lower clamp (502) at both ends. It also includes an upper sealing copper strip (6) and a lower adhesive strip (7) driven by a driving device to heat seal the bag opening.

2. The sealing device for a packaging bagging machine according to claim 1, characterized in that: The bag-pulling mechanism (5) includes a movable frame (505) slidably mounted on the base (1) via a guide rail (503) and a slider (504). One side of the movable frame (505) is fixed to the slider (504). A tension spring is connected between the movable frame (505) and the base (1) to pull the bag opening outward by the upper clamp (501) and the lower clamp (502). The mechanism also includes a drive device for resetting the slider (504). Both ends of the slider (504) are equipped with racks (506), and the two racks (506) move synchronously relative to each other by meshing with gears (507).

3. The sealing device for a packaging bagging machine according to claim 1, characterized in that: The upper clamp (501) and the lower clamp (502) are slidably mounted on the movable frame (505) via guide rails b (508) and sliders b (509). The upper clamp (501) and the lower clamp (502) are respectively mounted on their corresponding sliders b (509). Each of the two sliders b (509) is equipped with a rack b (5010), and the two racks b (5010) move synchronously relative to each other by meshing with gears b (5011), so that the upper clamp (501) and the lower clamp (502) move closer to each other to clamp the bag opening, or move further away from each other to release the bag opening. The movable frame (505) is equipped with a drive device to push the sliders b (509) to move.

4. The sealing device for a packaging bagging machine according to claim 1, characterized in that: A bracket (8) is provided on the base (1). The bracket (8) and the upper sealing copper strip (6) and the lower adhesive strip (7) on the base (1) are driven to move relative to each other by a driving device to seal the bag opening.

5. The sealing device for a packaging bagging machine according to claim 1, characterized in that: A base plate (9) is slidably mounted on the base (1). The support rod (4) is slidably mounted on the base plate (9) via a guide rail (10) and a slider (11). The two support rods (4) are respectively mounted on their corresponding sliders (11). Both sliders (11) are equipped with racks (12), and the two racks (12) move synchronously relative to each other by meshing with a gear (13), so that the two support rods (4) move closer or further away from each other. The base (1) is equipped with a drive device to push the base plate (9) to move, so that the support rod (4) can be inserted into the bag opening.

6. The sealing device for a packaging bagging machine according to claim 5, characterized in that: The base plate (9) is equipped with a vacuum tube (14), which is connected to an external vacuum pump through an air pipe. When the base plate (9) approaches the packaging bag, the vacuum tube (14) is inserted into the packaging bag to draw a vacuum.

7. The sealing device for a packaging bagging machine according to claim 4, characterized in that: The bracket (8) and the base (1) are respectively equipped with an upper vacuum sealing strip (15) and a lower vacuum sealing strip (16) via a drive device. The two move relative to each other after the vacuum tube (14) is inserted into the packaging bag, squeezing the bag opening to assist in vacuuming.

8. The sealing device for a packaging bagging machine according to claim 4, characterized in that: A pressure plate (17) is mounted on the bracket (8) via a drive device.

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