A closure for a packaging bag

Abstract

The utility model discloses a kind of sealing device for packaging bag, including base, support pipe is equipped on the base, screw rod is rotatably installed in the support pipe, screw rod and crossbeam are screw rod transmission;The rotation of screw rod is to allow sealing assembly to move upwards or downwards along support pipe;Sealing assembly is further equipped on the crossbeam;The sealing assembly includes support frame, movable clamp plate and heating plate are equipped in the support frame, and the movable clamp plate is approached the heating plate or is away from the heating plate by the driving element of being equipped with. Since sealing assembly can move up and down, so that the equipment can be sealed to the packaging bag of different height;Since movable clamp plate is under the action of driving element, the clearance between movable clamp plate and heating plate can be adjusted, so that the sealing place of packaging bag enters between movable clamp plate and heating plate. Based on this, the equipment can adapt to the packaging sealing of different size packaging bag, and also can satisfy the requirement of sealing height of packaging bag.

Description

Technical Field

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

[0002] Currently, the packaging of materials such as napkins, facial tissues, diapers, and sanitary napkins generally involves first filling a certain quantity of the material into a packaging bag; then, a manual sealing machine seals the bag opening; finally, the sealed bag opening is manually trimmed to remove excess material, resulting in a neat bag opening. A search revealed that the existing technology with publication number CN104973292B can completely solve the above problems, but it can only be applied to automated production lines. Since automated production lines inevitably produce products with incomplete sealing in practice, a second manual resealing is required for these incompletely sealed products. Utility Model Content

[0003] The purpose of this invention is to provide a sealing device for packaging bags to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for packaging bags, comprising a base, a support tube on the base, a lead screw rotatably mounted inside the support tube, and the lead screw being driven by a crossbeam; a sealing assembly is also provided on the crossbeam; the sealing assembly is moved upward or downward along the support tube by rotating the lead screw; the sealing assembly includes a support frame, a movable clamping plate and a heating plate are provided inside the support frame, and a driving component is provided to move the movable clamping plate closer to or away from the heating plate.

[0005] As a preferred technical solution of this utility model: the movable clamping plate is connected to the provided crossbar through a provided sliding rod, and the middle part of the crossbar is threadedly engaged with the working part of the driving component through a provided threaded seat.

[0006] As a preferred technical solution of this utility model: one end of the sliding rod is threadedly engaged with the connecting seat provided on the moving clamp plate, and the crossbar is movably mounted on the sliding rod.

[0007] As a preferred technical solution of this utility model: the support frame is also provided with a slot, and after the slot is fitted onto the crossbeam, a bolt is provided to pass through the slot and connect to the internal threaded hole provided on the crossbeam.

[0008] As a preferred technical solution of this utility model, the base is also provided with a roller.

[0009] As a preferred technical solution of this utility model: the upper end of the support tube is also provided with a handle, and the crossbeam is driven to move up or down along the support tube by rotating the handle.

[0010] As a preferred technical solution of this utility model, an electrical control box is also provided on the support tube.

[0011] The beneficial effects of this invention using the above technical solution are as follows: Because the sealing assembly can move up and down, the device can seal packaging bags of different heights. Simultaneously, because the moving clamp can open or close under the action of the driving component, the gap between the moving clamp and the heating plate can be adjusted, allowing the sealing end of the packaging bag to enter between the moving clamp and the heating plate. Therefore, this device can adapt to sealing packaging bags of different sizes and can also meet the sealing height requirements of the packaging bags. In particular, when used in conjunction with a production line, it can effectively reduce the scrap rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is an exploded view of the main structure of this utility model; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the main structure of the sealing component of this utility model; Figure 5 This is an exploded structural diagram of the sealing component of this utility model; Figure 6 This is a schematic diagram of the main structure of the movable clamping plate of this utility model.

[0013] In the diagram: 1. Base; 2. Roller; 3. Sealing assembly; 30. Support frame; 31. Groove; 32. Drive component; 33. Crossbar; 34. Sliding rod; 35. Moving clamp; 36. Heating plate; 37. Threaded seat; 38. Connecting seat; 39. Screw; 310. Nut; 4. Support tube; 5. Handle; 6. Electrical control box; 7. Lead screw; 8. Crossbeam; 9. Bolt; 10. Internal threaded hole. Detailed Implementation

[0014] 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 intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as limiting this utility model.

[0015] Please see Figure 1-5 This utility model provides an embodiment of a sealing device for packaging bags, comprising a base 1, a support tube 4 on the base 1, a lead screw 7 rotatably mounted inside the support tube 4, and the lead screw 7 being driven by a crossbeam 8; a sealing assembly 3 is also provided on the crossbeam 8; the sealing assembly 3 is moved upward or downward along the support tube 4 by the rotation of the lead screw 7; the sealing assembly 3 includes a support frame 30, a movable clamping plate 35 and a heating plate 36 are provided inside the support frame 30, and the movable clamping plate 35 is moved closer to or away from the heating plate 36 by a driving member 32.

[0016] In summary, because the sealing assembly 3 can move up and down, the equipment can seal packaging bags of different heights. Simultaneously, because the movable clamping plate 35 can open or close under the action of the driving component 32, the gap between the movable clamping plate 35 and the heating plate 36 can be adjusted, allowing the sealed portion of the packaging bag to enter between them. Therefore, this equipment can adapt to sealing packaging bags of different sizes and meet the sealing height requirements of the bags. In particular, when used in conjunction with a production line, it can effectively reduce the scrap rate.

[0017] Furthermore, since the movable clamping plate 35 is connected to the crossbar 33 via the sliding rod 34, and the middle part of the crossbar 33 is threadedly engaged with the working part of the driving member 32 via the threaded seat 37, the movable clamping plate 35 can be automatically opened or closed using the driving member 32; wherein, the driving member 32 is preferably a worm gear reducer motor, model JGY-370.

[0018] Since one end of the sliding rod 34 is threadedly engaged with the connecting seat 38 on the movable clamping plate 35, and the crossbar 33 is movably mounted on the sliding rod 34; specifically, when the movable clamping plate 35 is located inside the support frame 30, the external threaded post at one end of the sliding rod 34 is connected to the threaded hole in the connecting seat 38 to assemble the movable clamping plate 35 with the support frame 30. Simultaneously, a bolt is passed through the crossbar 33 and connected to the threaded hole at the other end of the sliding rod 34 to assemble the crossbar 33 with the sliding rod 34. Based on this, it is convenient to assemble and disassemble the movable clamping plate 35 with the support frame 30, thus facilitating the replacement of the movable clamping plate 35. In addition, the screw 39 on the heating plate 36 passes from the inside of the support frame 30 outwards and connects to the nut 310 to install and replace the heating plate 36. Based on this, the dimensions of the heating plate 36 and the movable clamping plate 35 of this device can be replaced as needed.

[0019] To facilitate the assembly and disassembly of the sealing assembly 3 and the crossbeam 8, the support frame 30 is also provided with a slot 31. After the slot 31 is fitted onto the crossbeam 8, the bolt 9 passes through the slot 31 and connects to the internal threaded hole 10 provided on the crossbeam 8.

[0020] Based on the above solution, since the base 1 is also equipped with a roller 2, when the product to be sealed is heavy, the roller 2 can be used to reduce the resistance when the packaging bag moves, so that the packaging bag can pass smoothly through the sealing component 3.

[0021] Furthermore, since the upper end of the support tube 4 is also provided with a handle 5, and the crossbeam 8 is driven to move up or down along the support tube 4 by rotating the handle 5, the height of the sealing assembly 3 can be manually adjusted.

[0022] In addition, the support tube 4 is also equipped with an electrical control box 6. Therefore, a controller for controlling the drive unit 32 and the heating plate 36 can be installed in the electrical control box 6. The heating plate 36 is a hollow copper plate with electric heating wires laid inside it. The electric heating wires are then connected to the controller in the electrical control box 6 through a power cord.

[0023] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A sealing device for packaging bags, characterized in that: Includes a base (1), on which a support tube (4) is provided, and a lead screw (7) is rotatably installed inside the support tube (4), and the lead screw (7) and the provided crossbeam (8) are driven by a lead screw; The crossbeam (8) is also provided with a sealing assembly (3); by rotating the lead screw (7), the sealing assembly (3) can be moved up or down along the support tube (4); The sealing assembly (3) includes a support frame (30), which has a movable clamping plate (35) and a heating plate (36) inside. The movable clamping plate (35) is moved closer to or away from the heating plate (36) by a driving member (32).

2. The sealing device for packaging bags according to claim 1, characterized in that: The movable clamp (35) is connected to the crossbar (33) by a sliding rod (34), and the middle part of the crossbar (33) is threadedly engaged with the working part of the drive member (32) by a threaded seat (37).

3. A sealing device for packaging bags according to claim 2, characterized in that: One end of the sliding rod (34) is threadedly engaged with the connecting seat (38) provided on the moving clamp (35), and the crossbar (33) is movably mounted on the sliding rod (34).

4. A sealing device for packaging bags according to claim 2, characterized in that: The support frame (30) is also provided with a slot (31), and after the slot (31) is fitted onto the crossbeam (8), the bolt (9) is passed through the slot (31) and connected to the internal threaded hole (10) provided on the crossbeam (8).

5. A sealing device for packaging bags according to claim 1, 2, 3, or 4, characterized in that: The base (1) is also provided with a roller (2).

6. A sealing device for packaging bags according to claim 5, characterized in that: The upper end of the support tube (4) is also provided with a handle (5), and the crossbeam (8) is driven to move up or down along the support tube (4) by rotating the handle (5).

7. A sealing device for packaging bags according to claim 6, characterized in that: An electrical control box (6) is also provided on the support pipe (4).

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