A plastic bag hot-melt edge sealing mechanism

Abstract

This utility model discloses a hot-melt sealing mechanism for plastic bags, including a hot-melt mechanism and a support system for supporting the hot-melt mechanism. The hot-melt mechanism includes a hot-melt blade and a heating element for heating the hot-melt blade, which extends along the conveying direction of the plastic bag material. The support system includes a vertical adjustment mechanism for adjusting the vertical position of the hot-melt mechanism and a horizontal adjustment mechanism for controlling the horizontal displacement of the hot-melt mechanism along its short side. A positioning ruler is provided next to the hot-melt mechanism and is parallel to the hot-melt blade. This utility model allows for multi-angle adjustment of the hot-melt blade position through the vertical and horizontal adjustment mechanisms, thereby adapting to the cutting needs of various plastic bags. The positioning ruler serves a positioning function and can be used to fit against the edge of the plastic bag material, facilitating the positioning of the plastic bag material. The relative position of the hot-melt blade can be adjusted according to the plastic bag material.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bag production, and in particular to a hot melt sealing mechanism for plastic bags. Background Technology

[0002] Plastic bags are bags made primarily of plastic and are essential items in people's daily lives. They are often used to hold other items and are widely used due to their advantages of being inexpensive, extremely lightweight, large-capacity, and easy to store. However, due to the disadvantages of plastic bags, such as their extremely long degradation cycle and difficulty in disposal, some countries have banned their production and use. The production of plastic bags requires the use of an edge-sealing machine to seal two pieces of plastic film together to form a plastic bag. However, the problem with existing edge-sealing equipment is that its adjustability is poor, making it difficult to adjust the position of the sealing structure, and it does not have an indicator structure to match the edge of the plastic bag material, making it difficult to judge the distance between the sealing structure and the edge of the plastic bag. Utility Model Content

[0003] The purpose of this utility model is to solve the problems in the prior art and propose a plastic bag hot melt sealing mechanism that can easily adjust the position of the hot melt mechanism to meet the sealing requirements of various types of plastic bags. It is equipped with a positioning ruler to facilitate the positioning of the relative position between the edge of the plastic bag material and the hot melt mechanism, and the relative position of the hot melt blade can be adjusted according to the plastic bag material.

[0004] To achieve the above objectives, this utility model proposes a plastic bag hot-melt sealing mechanism, including a hot-melt mechanism and a support system for supporting the hot-melt mechanism. The hot-melt mechanism includes a hot-melt blade and a heating element for heating the hot-melt blade. The hot-melt blade extends along the plastic bag raw material conveying direction. The support system includes a vertical adjustment mechanism for adjusting the vertical position of the hot-melt mechanism and a horizontal adjustment mechanism for controlling the horizontal displacement of the hot-melt mechanism along its short side. A positioning ruler is provided next to the hot-melt mechanism and is arranged parallel to the hot-melt blade.

[0005] Preferably, an electric heating dispensing knife is provided at one end of the hot-melt mechanism for cooperation with it.

[0006] Preferably, the left and right adjustment mechanism includes at least two connecting rods connected to the hot-melt mechanism and a first fixing plate disposed on the upper side of the connecting rods. A plurality of connecting grooves adapted to the connecting rods are provided on the first fixing plate. An adjusting screw for driving the connecting rods to move laterally along the short side direction of the hot-melt mechanism is provided in the connecting groove. The adjusting screw is rotatably disposed in the connecting groove and threadedly connected to the connecting rod.

[0007] Preferably, the left and right adjustment mechanism includes a plurality of slide rails arranged along the short side of the hot-melt mechanism, a second fixed plate slidably disposed on the slide rails, a lead screw arranged parallel to the slide rails, and a handwheel disposed at one end of the lead screw, wherein the lead screw is threadedly connected to the second fixed plate.

[0008] Preferably, the up-and-down adjustment mechanism includes a second fixed plate and a first fixed plate disposed on the lower side of the second fixed plate, wherein the second fixed plate is provided with a lifting driver for driving the first fixed plate to move up and down.

[0009] Preferably, a plurality of elastic telescopic rods for driving the first fixed plate to move toward the second fixed plate are provided between the second fixed plate and the first fixed plate. The second fixed plate is provided with a protective cover around its circumference for cooperating with the hot-melt mechanism. When the first fixed plate is in the raised position, the first fixed plate drives the hot-melt mechanism to be housed inside the protective cover.

[0010] The beneficial effects of this utility model of a hot melt sealing mechanism for plastic bags are as follows: This utility model can adjust the position of the hot melt blade at multiple angles through the up-down adjustment mechanism and the left-right adjustment mechanism, thereby adapting to the cutting needs of various plastic bags. The positioning ruler is used for its positioning function, and it can be used to fit with the edge of the plastic bag material, thereby facilitating the positioning of the plastic bag material. The relative position of the hot melt blade can be adjusted according to the plastic bag material.

[0011] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a plastic bag hot melt sealing mechanism according to the present invention.

[0013] Figure 2 This is a three-dimensional structural diagram of a plastic bag hot-melt sealing mechanism according to this utility model.

[0014] Figure 3 This is a side view of the structure of a plastic bag hot melt sealing mechanism according to the present invention.

[0015] Figure 4 This is a schematic diagram of the main structure of a plastic bag hot melt sealing mechanism according to the present invention.

[0016] Figure 5 This is a three-dimensional structural schematic diagram of a second embodiment of the hot-melt sealing mechanism for plastic bags according to this utility model.

[0017] Figure 6 This is a three-dimensional structural diagram of the electric heating dispensing knife of a plastic bag heat-sealing mechanism according to this utility model.

[0018] Figure 7 This is a schematic diagram of the structure of a plastic bag hot melt sealing mechanism in use according to this utility model.

[0019] In the diagram: 1-Hot melt mechanism, 2-Support system, 3-Positioning ruler, 4-Electric heating material dispensing knife, 11-Hot melt blade, 12-Heating element, 21-Connecting rod, 22-First fixing plate, 23-Adjusting screw, 24-Slide rail, 25-Second fixing plate, 26-Screw rod, 27-Lifting driver, 28-Elastic telescopic rod, 29-Protective cover. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0021] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0022] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1:

[0025] See Figure 1 , Figure 2 ,picture, Figure 4 , Figure 7 This utility model discloses a plastic bag hot melt sealing mechanism, which includes a hot melt mechanism 1 consisting of a hot melt blade 11 and a heating element 12 for heating the hot melt blade 11. The blade is arranged along the conveying direction of the plastic bag material and is located at the edge of the plastic bag material that needs to be hot melt sealed. When the plastic bag material passes through the hot melt blade 11, the hot melt blade 11 melts the plastic bag in contact with it, thereby achieving the cutting and sealing of the edge of the plastic bag material.

[0026] The hot melt blade 11 extends along the conveying direction of the plastic bag material. The hot melt blade 11 is long and has a longer heating area. A semi-circular groove is provided on the hot melt blade 11 near the material feeding direction of the plastic bag, which facilitates its cooperation with the plastic bag material.

[0027] To secure the hot-melt mechanism 1, a support system 2 is provided on the hot-melt mechanism 1. The support system 2 includes a vertical adjustment mechanism for adjusting the vertical position of the hot-melt mechanism 1 and a horizontal adjustment mechanism for controlling the horizontal displacement of the hot-melt mechanism 1 along its short side. A positioning ruler 3 is provided next to the hot-melt mechanism 1, parallel to the hot-melt blade 11. The vertical and horizontal adjustment mechanisms allow for multi-angle adjustment of the position of the hot-melt blade 11, thus adapting to the cutting needs of various plastic bags. The positioning ruler 3 serves a positioning function; it can be used to fit against the edge of the plastic bag material, facilitating the positioning of the plastic bag material. The relative position of the hot-melt blade 11 can be adjusted according to the plastic bag material.

[0028] See Figure 1 , Figure 3 , Figure 7 An electric heating separating blade 4 is provided at one end of the heat-sealing mechanism 1 for cooperation with it. The electric heating separating blade 4 has a cutting edge facing the direction of the plastic bag raw material, and its cross-section is triangular. It can separate excess waste edges from the plastic bag raw material, avoiding mutual interference between the two. At the same time, through its own electric heating capacity, it can also continuously heat the edge of the bag material at the cut point, improving the heat sealing effect.

[0029] For details, please refer to Figure 1 , Figure 3 The left and right adjustment mechanism includes two connecting rods 21 connected to the hot-melt mechanism 1 and a first fixing plate 22 located on the upper side of the connecting rods 21. The first fixing plate 22 has several connecting grooves adapted to the connecting rods 21. An adjusting screw 23 is provided in each connecting groove to drive the connecting rods 21 to move laterally along the short side of the hot-melt mechanism 1. The adjusting screw 23 is rotatably disposed in the connecting groove and threadedly connected to the connecting rods 21. A positioning guide 3 is fixed to the first fixing plate 22 or the second fixing plate 25. This part of the structure is used to fine-tune the position of the hot-melt blade 11 and adjust the distance between the hot-melt blade 11 and the positioning guide 3. By adjusting the screw 23, the connecting rods 21 can be driven to move laterally within the connecting grooves, thereby moving the hot-melt blade 11 and adjusting the distance between the hot-melt blade 11 and the positioning guide 3.

[0030] For further details, please refer to [link / reference]. Figure 1 , Figure 3 , Figure 4 The left and right adjustment mechanism also includes two slide rails 24 arranged along the short side of the hot melt mechanism 1, a second fixed plate 25 slidably mounted on the slide rails 24, a lead screw 26 arranged parallel to the slide rails 24, and a handwheel located at one end of the lead screw 26. The lead screw 26 is threadedly connected to the second fixed plate 25. This part of the structure is used to adjust the position of the hot melt blade 11 over a wide range. The second fixed plate 25 and the structure fixed below the second fixed plate 25 can be moved along the slide rails 24 by rotating the lead screw 26.

[0031] The up-down adjustment mechanism includes a second fixed plate 25 and a first fixed plate 22 located below the second fixed plate 25. The second fixed plate 25 is provided with a lifting driver 27 for driving the first fixed plate 22 to move up and down. The lifting driver 27 is a cylinder. The lifting driver 27 can drive the hot melt mechanism 1 to move up and down. When hot melting is required, the hot melt mechanism 1 is in the lowered position. When hot melting is not required, the hot melt mechanism 1 is driven to be lifted so that it is away from the plastic bag material to avoid damaging the plastic bag material.

[0032] Example 2:

[0033] See Figure 5Based on Embodiment 1, two elastic telescopic rods 28 are further provided between the second fixing plate 25 and the first fixing plate 22 for driving the first fixing plate 22 to move towards the second fixing plate 25. The second fixing plate 25 is circumferentially provided with a protective cover 29 for cooperating with the hot-melt mechanism 1. When the first fixing plate 22 is in the raised position, the first fixing plate 22 drives the hot-melt mechanism 1 to be housed inside the protective cover 29. When the equipment stops, the elastic telescopic rods 28 can drive the first fixing plate 22 to automatically lift. Even in the event of a power outage, the protective cover 29 is provided to house and shield the hot-melt mechanism 1, improving safety and preventing the hot-melt mechanism 1 from being exposed and burning the plastic bag raw material or operators.

[0034] In the operation of this utility model, a plastic bag hot melt sealing mechanism is used. The plastic bag material is conveyed to the hot melt blade 11 through a conveying device. When the plastic bag material passes through the hot melt blade 11, the hot melt blade 11 melts the plastic bag in contact with it, thereby cutting and sealing the edge of the plastic bag material. The position of the hot melt blade 11 can be adjusted at multiple angles through the up-down adjustment mechanism and the left-right adjustment mechanism. The positioning ruler 3 is used for its positioning function. It can be used to fit with the edge of the plastic bag material, thereby facilitating the positioning of the plastic bag material. The relative position of the hot melt blade 11 can be adjusted according to the plastic bag material.

[0035] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The internal components of the electric slide rail, cylinder, welding machine, electric telescopic rod and controller all adopt conventional models in the existing technology, and their internal structure belongs to the existing technology structure. Workers can complete the normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the existing technology, and will not be described in detail here.

[0036] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A plastic bag heat-sealing mechanism, comprising a heat-sealing mechanism (1) and a support system (2) for supporting the heat-sealing mechanism (1), characterized in that: The hot melt mechanism (1) includes a hot melt blade (11) and a heating element (12) for heating the hot melt blade (11). The hot melt blade (11) extends along the direction of conveying the plastic bag raw materials. The support system (2) includes an up-down adjustment mechanism for adjusting the up-down position of the hot melt mechanism (1) and a left-right adjustment mechanism for controlling the horizontal displacement of the hot melt mechanism (1) along its short side. A positioning ruler (3) is provided next to the hot melt mechanism (1) and is parallel to the hot melt blade (11).

2. The plastic bag heat-sealing mechanism as described in claim 1, characterized in that: An electric heating dispensing knife (4) is provided at one end of the hot melt mechanism (1) for cooperating with it. The electric heating dispensing knife (4) has a cutting edge facing the direction of the plastic bag raw material.

3. The plastic bag heat-sealing mechanism as described in claim 1, characterized in that: The left and right adjustment mechanism includes at least two connecting rods (21) connected to the hot melt mechanism (1) and a first fixing plate (22) disposed on the upper side of the connecting rods (21). A plurality of connecting grooves adapted to the connecting rods (21) are provided on the first fixing plate (22). An adjusting screw (23) for driving the connecting rods (21) to move laterally along the short side direction of the hot melt mechanism (1) is provided in the connecting groove. The adjusting screw (23) is rotatably disposed in the connecting groove and threadedly connected to the connecting rods (21).

4. The plastic bag heat-sealing mechanism as described in claim 1, characterized in that: The left and right adjustment mechanism includes several slide rails (24) arranged along the short side of the hot melt mechanism (1), a second fixing plate (25) slidably arranged on the slide rails (24), a lead screw (26) arranged parallel to the slide rails (24), and a handwheel arranged at one end of the lead screw (26). The lead screw (26) is threadedly connected to the second fixing plate (25).

5. The plastic bag heat-sealing mechanism as described in claim 1, characterized in that: The up-down adjustment mechanism includes a second fixed plate (25) and a first fixed plate (22) located on the lower side of the second fixed plate (25). The second fixed plate (25) is provided with a lifting driver (27) for driving the first fixed plate (22) to move up and down.

6. The plastic bag heat-sealing mechanism as described in claim 5, characterized in that: A plurality of elastic telescopic rods (28) for driving the first fixed plate (22) to move toward the second fixed plate (25) are provided between the second fixed plate (25) and the first fixed plate (22). The second fixed plate (25) is provided with a protective cover (29) for cooperating with the hot melt mechanism (1) in the circumferential direction. When the first fixed plate (22) is in the raised position, the first fixed plate (22) drives the hot melt mechanism (1) to be housed in the protective cover (29).

Images