Edge sealing device for plastic bags

Abstract

The utility model discloses an edge sealing device of plastic bag relates to the technical field of plastic bag processing, including frame, mount, heat seal plate and adjusting assembly, the mount is located on the frame, the heat seal plate is equipped with two and symmetrically is equipped between the frame and mount, and the distance of two heat seal plates is adjusted to adapt to the edge sealing of the plastic bag of different size under the action of adjusting assembly. The drive motor and gear rack transmission of adjusting assembly can automatically adjust the distance between two heat seal plates according to the plastic bag of different size, and the plastic bag is limited through two baffle, thereby does not need manual frequent replacement or adjustment equipment, and the adaptability of device to different plastic bag size is improved greatly.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bag processing, specifically to a sealing device for plastic bags. Background Technology

[0002] In the plastic packaging industry, sealing plastic bags is a crucial step in the packaging process. Traditional plastic bag sealing devices typically use a fixed-position heat-sealing plate to seal the plastic bags. This method has some limitations: traditional sealing devices are usually only suitable for plastic bags of specific sizes. For plastic bags of different sizes, frequent adjustments or replacements of the equipment are required, making the operation cumbersome and inefficient. Summary of the Invention

[0003] The purpose of this invention is to provide a sealing device for plastic bags to overcome the aforementioned defects in the prior art.

[0004] A sealing device for plastic bags includes a frame, a fixing frame, heat sealing plates, and an adjusting component. The fixing frame is mounted on the frame, and two heat sealing plates are symmetrically arranged between the frame and the fixing frame. The distance between the two heat sealing plates is adjusted by the adjusting component to accommodate sealing of plastic bags of different sizes.

[0005] Preferably, the fixing frame includes a base plate, fixing columns and a top plate. The base plate is disposed on the frame, and a plurality of fixing columns are disposed on the base plate. The upper end of all fixing columns is provided with the same top plate.

[0006] Preferably, the adjustment assembly includes a cylinder, a drive motor, and a movable frame. Two mounting slots are symmetrically arranged on the top plate. Each mounting slot has a slide plate that is slidably connected to a slide rail on its inner wall. Each slide plate has a rack on its side. The drive motor is mounted on the bottom of the top plate, and a gear is mounted on its output shaft. The gear meshes with both racks. Each slide plate has a cylinder. The lower end of the piston rod of the cylinder has a mounting plate. The heat-sealing plate is located at the bottom of the mounting plate and is electrically connected to the controller. Each slide plate has a movable frame on its side. The lower end of the movable frame has a baffle. The side of the mounting plate is slidably connected to a groove on the baffle.

[0007] Preferably, there are four fixed columns, which are respectively located at the four corners of the base plate.

[0008] Preferably, the mobile frame has an "L" shaped structure.

[0009] Preferably, the movable frame is slidably connected to the slide rail two on the side of the top plate.

[0010] Preferably, the rack is slidably connected to the slide rail three on the top plate.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] This application automatically adjusts the distance between two heat-sealing plates according to different sizes of plastic bags by adjusting the drive motor and gear rack transmission of the adjustment component, and limits the plastic bag by two baffles, thus eliminating the need for frequent manual replacement or adjustment of the equipment, and greatly improving the adaptability of the device to different plastic bag sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of this utility model when it is not installed on the frame.

[0015] Figure 3 This is a structural schematic diagram of the mounting plate, movable frame, and baffle of this utility model.

[0016] In the diagram, 1 is the frame; 2 is the mounting frame; 21 is the base plate; 22 is the fixed column; 23 is the top plate; 231 is the mounting groove; 3 is the heat-sealing plate; 4 is the adjusting assembly; 41 is the slide rail one; 42 is the sliding plate; 43 is the rack; 431 is the slide rail three; 44 is the drive motor; 441 is the gear; 45 is the cylinder; 46 is the mounting plate; 47 is the moving frame; 471 is the slide rail two; 48 is the baffle; and 481 is the chute. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0019] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] like Figure 1-3 As shown, this utility model provides a sealing device for plastic bags, including a frame, a fixing frame 2, a heat sealing plate 3, and an adjusting component 4;

[0021] The fixing frame 2 is mounted on the machine frame. The fixing frame 2 includes a base plate 21, fixing columns 22 and a top plate 23. The base plate 21 is mounted on the machine frame. There are four fixing columns 22, which are respectively located at the four corners of the base plate 21. The upper end of all fixing columns 22 is provided with the same top plate 23.

[0022] In addition, two heat-sealing plates 3 are provided and symmetrically arranged between the frame and the fixed frame 2. The distance between the two heat-sealing plates 3 is adjusted under the action of the adjusting component 4 to adapt to the sealing of plastic bags of different sizes. The adjusting component 4 includes a cylinder 45, a drive motor 44 and a moving frame 47. Two mounting slots 231 are symmetrically provided on the top plate 23. Each mounting slot 231 is provided with a sliding plate 42 that is slidably connected to the slide rail 41 on its inner wall. Each sliding plate 42 is provided with a rack 43 that is slidably connected to the slide rail 431 on the top plate 23, so that the rack 43 is more stable during movement.

[0023] In addition, the drive motor 44 is installed at the bottom of the top plate 23 and a gear 441 is installed on its output shaft. The gear 441 meshes with two racks 43. Each slide plate 42 is equipped with a cylinder 45. The piston rod of the cylinder 45 is provided with a mounting plate 46 at its lower end. The heat sealing plate 3 is located at the bottom of the mounting plate 46 and is electrically connected to the controller. Each slide plate 42 is provided with an "L"-shaped movable frame 47 on its side. The movable frame 47 is slidably connected to the slide rail 471 on the side of the top plate 23, so that the movable frame 47 is more stable during movement.

[0024] The lower end of the movable frame 47 is provided with a baffle 48, which limits the plastic bag by means of the baffles 48 on both sides. The side of the mounting plate 46 is slidably connected to the slide groove 481 on the baffle 48, so that the mounting plate 46 is more stable when moving up and down.

[0025] Detailed implementation methods and principles:

[0026] When adjusting the distance between the two heat-sealing plates 3 according to the size of the plastic bag, the output shaft of the drive motor 44 is controlled to rotate, which drives the gear 441 on it to rotate. The gear 441 drives the racks 43 on both sides to move along the slide rail 3 431, thereby driving the slide plate 42 to move on the slide rail 1 41 in the mounting groove 231, so that the heat-sealing plate 3 on the cylinder 45 and the moving frame 47 is moved to the appropriate position, and the output shaft of the drive motor 44 is stopped from rotating.

[0027] Next, the plastic bag to be sealed is passed between the base plate 21 and the heat-sealing plate 3 and positioned between the two baffles 48. The plastic bag is then conveyed by a conveying device, pausing after each set distance of movement to perform the sealing operation. Specifically, the piston rod of the control cylinder 45 extends, causing the mounting plate 46 to move down along the slide 481. The heated heat-sealing plate 3 at the bottom of the mounting plate 46 seals the plastic bag. After completion, the piston rod of the control cylinder 45 retracts, causing the mounting plate 46 to move up along the slide 481, thus moving the heat-sealing plate 3 up. The conveying device then conveys the plastic bag.

[0028] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A sealing device for a plastic bag, characterized in that: It includes a frame (), a fixed frame (2), a heat sealing plate (3) and an adjustment component (4). The fixed frame (2) is located on the frame (). Two heat sealing plates (3) are provided and symmetrically located between the frame () and the fixed frame (2). The distance between the two heat sealing plates (3) is adjusted by the adjustment component (4) to accommodate the sealing of plastic bags of different sizes.

2. The sealing device for a plastic bag according to claim 1, characterized in that: The fixed frame (2) includes a base plate (21), fixed columns (22) and a top plate (23). The base plate (21) is set on the frame (). Several fixed columns (22) are provided on the base plate (21). The upper end of all fixed columns (22) is provided with the same top plate (23).

3. The sealing device for a plastic bag according to claim 2, characterized in that: The adjustment assembly (4) includes a cylinder (45), a drive motor (44), and a moving frame (47). Two mounting slots (231) are symmetrically arranged on the top plate (23). Each mounting slot (231) has a sliding plate (42) slidably connected to a slide rail (41) on its inner wall. Each sliding plate (42) has a rack (43) on its side. The drive motor (44) is mounted on the bottom of the top plate (23), and a gear (441) is mounted on its output shaft. The gear (441)... The slide plate (42) is engaged with both racks (43). Each slide plate (42) is equipped with a cylinder (45). The piston rod of the cylinder (45) is provided with a mounting plate (46) at its lower end. The heat sealing plate (3) is located at the bottom of the mounting plate (46) and is electrically connected to the controller. Each slide plate (42) is provided with a moving frame (47) on its side. The lower end of the moving frame (47) is provided with a baffle (48). The side of the mounting plate (46) is slidably connected to the groove (481) on the baffle (48).

4. The sealing device for a plastic bag according to claim 2, characterized in that: The fixed column (22) is provided in four places and is located at the four corners of the base plate (21).

5. A sealing device for a plastic bag according to claim 3, characterized in that: The mobile frame (47) has an "L" shaped structure.

6. The sealing device for a plastic bag according to claim 3, characterized in that: The movable frame (47) is slidably connected to the slide rail (471) on the side of the top plate (23).

7. A sealing device for a plastic bag according to claim 3, characterized in that: The rack (43) is slidably connected to the slide rail (431) on the top plate (23).

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