A bag making and heat sealing device for processing plastic flexible packaging bags

Abstract

The utility model discloses a bag-making heat-sealing device for processing plastic flexible packaging bags, including a mounting plate, a swing mechanism, a swing frame, a lifting and pressing mechanism, an upper template, a lower template, a heating element and a lifting and cutting bag mechanism; the swing mechanism is connected to the swing frame, the lifting and pressing mechanism is connected to the upper template, and the lower template is used to bear the edge of the plastic flexible packaging bag to be heat-sealed. The lifting and pressing mechanism of the utility model can drive the upper template to press downward, so that the plastic flexible packaging bag between the upper template and the lower template can obtain a stable heat-sealing pressure during the heat-sealing process. When the heat-sealing is completed, the lifting and cutting bag mechanism can act on the surface of the plastic flexible packaging bag in a vertical lifting manner, and then the swing mechanism can drive the swing frame to swing upward to apply an upward pulling force to the cutting portion of the plastic flexible packaging bag, so that the plastic flexible packaging bag can be smoothly cut, solving the problem that the plastic flexible packaging bag with a relatively flexible material is not easy to cold-cut.

Description

Technical Field

[0001] The utility model relates to the field of bag making and heat sealing, in particular to a bag making and heat sealing device for processing plastic soft packaging bags. Background Art

[0002] Plastic flexible packaging bags are soft packaging bags made of plastic materials. Such packaging bags are usually made of various types of plastics, such as polyethylene, polypropylene, polyvinyl chloride, polylactic acid, etc. Plastic flexible packaging bags are widely used in the packaging of food, daily necessities, cosmetics, medicines and other fields. They are light, easy to carry, moisture-proof, anti-oxidation, etc., and can effectively protect the quality of products and extend the shelf life.

[0003] In the prior art, in the process of processing and making plastic flexible packaging bags, it is often necessary to perform heat sealing and cutting on the edges thereof, and the heat sealing and cutting processes of the existing bag making machines are respectively processed by two separate mechanisms. Usually, after the heat sealing mechanism completes the heat sealing of the plastic flexible packaging bag, the plastic flexible packaging bag is moved to the cutting mechanism for cold cutting. This not only consumes a certain amount of time in the conversion process and affects the processing efficiency, but also because the material of the plastic flexible packaging bag is relatively flexible, it is difficult to smoothly cut the plastic flexible packaging bag using the conventional vertical cold cutting method.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a bag-making heat-sealing device for processing plastic soft packaging bags, which has the advantages of improving production efficiency, good heat-sealing effect and smooth cutting.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: a bag-making and heat-sealing device for processing plastic flexible packaging bags, comprising a mounting plate, a swing mechanism, a swing frame, a lifting and pressing mechanism, an upper template, a lower template, a heating element and a lifting and cutting bag mechanism;

[0007] The swing mechanism is arranged on the mounting plate, and the swing mechanism is connected to the swing frame to drive the swing frame to swing up and down;

[0008] The lifting and pressing mechanism is arranged on the swing frame, the lifting and pressing mechanism is connected to the upper template, and the lower template is arranged at one end of the swing frame away from the swing mechanism;

[0009] The upper template and the lower template are respectively provided with a receiving cavity, and the heating element is arranged in the receiving cavity to be used for electrically heating the upper template and the lower template;

[0010] The lower template is used to bear the edge of the plastic flexible packaging bag to be heat-sealed, and the lifting and pressing mechanism is used to drive the upper template to heat-seal and press on the lower template;

[0011] The lifting bag cutting mechanism is arranged on the mounting plate to perform transverse cutting on the heat-sealed plastic soft packaging bags.

[0012] According to the above technical solution, in the bag making and heat sealing device for processing plastic flexible packaging bags, the swing mechanism includes a first motor, a swing shaft, a pulley transmission assembly and a seat bearing;

[0013] The first motor is arranged at the back of the mounting plate, and the output shaft of the first motor is connected to the swing shaft through the pulley transmission assembly;

[0014] The seat bearing is sleeve-connected with the end of the swing shaft, clamping seats are arranged on both sides of the swing shaft, and the swing frame is connected with the clamping seats so as to rotate along with the rotation of the swing shaft.

[0015] By adopting the above-mentioned technical solutions, in the bag-making and heat-sealing device for processing plastic flexible packaging bags, the lifting and pressing mechanism includes a lifting cylinder and a connecting rod arm;

[0016] The lifting cylinder is arranged on both sides of the swing frame, the fixed end of the lifting cylinder is connected to the clamping seat, and the movable end of the lifting cylinder is connected to the middle part of the connecting rod arm;

[0017] One end of the connecting rod arm is movably connected to the side wall of the swing frame through a pin shaft, and the other end of the connecting rod arm is connected to the upper template through a connecting plate. The lifting cylinder is used to drive the connecting rod arm to rotate around the pin shaft to raise or lower the height of the upper template.

[0018] By adopting the above-mentioned technical solutions, in the bag making and heat sealing device for processing plastic flexible packaging bags, the lifting and bag cutting mechanism includes a screw lifting assembly, a cutting knife fixing frame and a cross-cutting knife;

[0019] The screw rod lifting assembly is connected to the cutter fixing frame to drive the cutter fixing frame to move up and down in a vertical direction, and the cross-cutting knife is connected to the cutter fixing frame.

[0020] By adopting the above-mentioned technical solutions, in the bag-making and heat-sealing device for processing plastic flexible packaging bags, the screw lifting assembly includes a second motor, a screw, a lifting plate, a sliding rod and a linear bearing;

[0021] The output shaft of the second motor is connected to the screw rod to drive the screw rod to rotate, and the lifting plate is connected to the screw rod through a nut seat, and the lifting plate can move along the length direction of the screw rod;

[0022] The two sides of the lifting plate are respectively connected to a sliding rod, the top of the sliding rod is connected to the cutter fixing frame, and the linear bearing is arranged on the back of the mounting plate and is connected to the sliding rod sleeve.

[0023] By adopting the above-mentioned technical solutions, in the bag making and heat sealing device for processing plastic flexible packaging bags, the screw lifting assembly also includes a first limit sensor and a second limit sensor;

[0024] The first limit sensor and the second limit sensor are respectively arranged on the upper and lower sides of the mounting plate and located at the side ends of the lifting plate to control the lifting height of the lifting plate.

[0025] By adopting the above-mentioned technical solutions, in the bag-making and heat-sealing device for processing plastic flexible packaging bags, the wall surfaces of the upper template and the lower template facing each other are respectively provided with concave-convex textures.

[0026] By adopting the above-mentioned technical solutions, in the bag-making and heat-sealing device for processing plastic flexible packaging bags, the mounting plate is provided with an avoidance groove for allowing the swing frame to swing up and down.

[0027] Compared with the prior art, the utility model has the following beneficial effects:

[0028] The lifting and pressing mechanism of the utility model can drive the upper template to press down, so that the upper template and the lower template are pressed together, so that the plastic flexible packaging bag between the upper template and the lower template can obtain stable heat-sealing pressure during the heat-sealing process, and the heat-pressing sealing effect is improved. When the heat sealing is completed, the lifting and bag cutting mechanism can act on the surface of the plastic flexible packaging bag in a vertical lifting manner, and then the swing mechanism can drive the swing frame to swing upward to apply an upward pulling force to the cutting part of the plastic flexible packaging bag, so that the plastic flexible packaging bag can be cut smoothly, which solves the problem that plastic flexible packaging bags with relatively flexible materials are not easy to cold-cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0033] Figure 3 It is a schematic diagram of the structure of the lifting and pressing mechanism of the utility model. DETAILED DESCRIPTION

[0034] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] like Figures 1 to 3 As shown, the embodiment of the utility model provides a bag making and heat sealing device for processing plastic flexible packaging bags, including a mounting plate 1, a swing mechanism 2, a swing frame 3, a lifting and pressing mechanism 4, an upper template 51, a lower template 52, a heating element 6 and a lifting and cutting bag mechanism 7;

[0038] The swing mechanism 2 is arranged on the mounting plate 1, and the swing mechanism 2 is connected to the swing frame 3 to drive the swing frame 3 to swing up and down; the lifting and pressing mechanism 4 is arranged on the swing frame 3, and the lifting and pressing mechanism 4 is connected to the upper template 51, and the lower template 52 is arranged at the end of the swing frame 3 away from the swing mechanism 2; the upper template 51 and the lower template 52 are respectively provided with a accommodating cavity, and the heating element 6 is arranged in the accommodating cavity to electrically heat the upper template 51 and the lower template 52; the lower template 52 is used to receive the edge of the plastic soft packaging bag to be heat-sealed, and the lifting and pressing mechanism 4 is connected to the upper template 51, and the lower template 52 is provided with a heating element 6. The lifting and pressing mechanism 4 is used to drive the upper template 51 to be heat-sealed and pressed onto the lower template 52; the heating element 6 is located in the accommodating cavity of the upper template 51 and the lower template 52, and the heating element 6 is powered on for heating, so that the surfaces of the upper template 51 and the lower template 52 can reach the required heat-sealing temperature, thereby ensuring that the plastic flexible packaging bag is fully heated during the heat-sealing process to achieve heat sealing; the lifting and pressing mechanism 4 can drive the upper template 51 to be pressed downward, so that the upper template 51 and the lower template 52 are pressed together, so that the plastic flexible packaging bag between the upper template 51 and the lower template 52 can obtain a stable heat-sealing pressure during the heat-sealing process, thereby achieving a sealing effect;

[0039] like Figure 1 and Figure 2 As shown, the lifting and bag cutting mechanism 7 is arranged on the mounting plate 1, so as to perform transverse cutting on the heat-sealed plastic flexible packaging bag; since the material of the plastic flexible packaging bag is relatively flexible, when the heat sealing is completed, the plastic flexible packaging bag needs to be cut, the lifting and bag cutting mechanism 7 can act on the surface of the plastic flexible packaging bag by vertical lifting, and then the swing mechanism 2 drives the swing frame 3 to swing upward, so as to apply an upward pulling force to the cut part of the plastic flexible packaging bag, so as to facilitate the smooth cutting of the plastic flexible packaging bag.

[0040] like Figure 2 As shown, further, the swing mechanism 2 includes a first motor 21, a swing shaft 22, a pulley transmission assembly 23 and a seat bearing 24; the first motor 21 is arranged on the back of the mounting plate 1, and the output shaft of the first motor 21 is connected to the swing shaft 22 through the pulley transmission assembly 23, the seat bearing 24 is sleeved and connected to the end of the swing shaft 22, and clamping seats 25 are provided on both sides of the swing shaft 22, and the swing frame 3 is connected to the clamping seats 25 so as to rotate with the rotation of the swing shaft 22; when the first motor 21 is started, its output shaft can drive the swing shaft 22 to rotate, and the rotation of the swing shaft 22 can drive the swing frame 3 to swing accordingly through the clamping seat 25, so as to realize the effect of applying a pulling force to the plastic flexible packaging bag during the cutting process.

[0041] like Figure 1 and Figure 3As shown, further, the lifting and pressing mechanism 4 includes a lifting cylinder 41 and a connecting arm 42, the lifting cylinder 41 is arranged on both sides of the swing frame 3, the fixed end of the lifting cylinder 41 is connected to the clamping seat 25, the movable end of the lifting cylinder 41 is connected to the middle part of the connecting arm 42, one end of the connecting arm 42 is movably connected to the side wall of the swing frame 3 through a pin shaft (not shown), and the other end of the connecting arm 42 is connected to the upper template 51 through a connecting plate, and the lifting cylinder 41 is used to drive the connecting arm 42 to rotate around the pin shaft to lift or lower the height of the upper template 51; when the upper template 51 needs to be pressed onto the lower template 52, the lifting cylinder 41 can drive the connecting arm 42 to rotate around the pin shaft, thereby lowering the height of the upper template 51, so that the upper template 51 can stably press the plastic soft packaging bag to ensure the quality of heat sealing and the accuracy of cutting.

[0042] like Figure 1 As shown, further, the lifting bag cutting mechanism 7 includes a screw lifting assembly 71, a cutter fixing frame 72 and a cross-cutting knife 73. The screw lifting assembly 71 is connected to the cutter fixing frame 72 to drive the cutter fixing frame 72 to move up and down in the vertical direction, and the cross-cutting knife 73 is connected to the cutter fixing frame 72. When it is necessary to cut the plastic flexible packaging bag, the screw lifting assembly 71 can drive the cutter fixing frame 72 to descend, so that the cross-cutting knife 73 applies pressure to the plastic flexible packaging bag, thereby realizing the horizontal cutting of the plastic flexible packaging bag.

[0043] like Figure 1 and Figure 2 As shown, further, the screw lifting assembly 71 includes a second motor 711, a screw 712, a lifting plate 713, a slide bar 714 and a linear bearing 715; the output shaft of the second motor 711 is connected to the screw 712 to drive the screw 712 to rotate, the lifting plate 713 is connected to the screw 712 through a nut seat 716, and the lifting plate 713 can move along the length direction of the screw 712; the two sides of the lifting plate 713 are respectively connected to a slide bar 714, the top of the slide bar 714 is connected to the cutter fixing frame 72, and the linear bearing 715 is arranged on the back of the mounting plate 1 and is sleeved with the slide bar 714; the second motor 711 can drive the screw 712 to rotate, so that the lifting plate 713 moves along the length direction of the screw 712, thereby realizing the lifting action, the slide bar 714 is connected to the lifting plate 713 and is sleeved with the linear bearing 715, so that the movement stability of the lifting plate 713 can be improved.

[0044] like Figure 2As shown, further, the screw lifting assembly 71 also includes a first limit sensor 717 and a second limit sensor 718, which are respectively arranged on the upper and lower sides of the mounting plate 1 and located at the side ends of the lifting plate 713, so as to control the lifting height of the lifting plate 713. The first limit sensor 717 and the second limit sensor 718 can detect the lifting height of the lifting plate 713. When the lifting plate 713 reaches a preset upper limit or lower limit position, the first limit sensor 717 or the second limit sensor 718 will send a signal to control the second motor 711 to stop, so as to ensure that the lifting plate 713 moves within a specified height range.

[0045] like Figure 3 As shown, further, the walls of the upper template 51 and the lower template 52 facing each other are respectively provided with concave-convex textures 511, and the concave-convex textures 511 can increase the contact area between the upper template 51 and the lower template 52, thereby increasing the friction force, making the heat seal more firm, and reducing air or liquid leakage at the seal.

[0046] like Figure 2 As shown, further, the mounting plate 1 is provided with an avoidance groove 10 for allowing the swing frame 3 to swing up and down.

[0047] The lifting and pressing mechanism 4 of the utility model can drive the upper template 51 to press down, so that the upper template 51 and the lower template 52 are pressed together, so that the plastic flexible packaging bag between the upper template 51 and the lower template 52 can obtain a stable heat-sealing pressure during the heat-sealing process, thereby improving the heat-pressing sealing effect. When the heat sealing is completed, the lifting and bag cutting mechanism 7 can act on the surface of the plastic flexible packaging bag by vertical lifting, and then the swing mechanism 2 can drive the swing frame 3 to swing upward to apply an upward pulling force to the cutting part of the plastic flexible packaging bag, so as to enable the plastic flexible packaging bag to be cut smoothly, thereby solving the problem that the plastic flexible packaging bags with relatively flexible materials are not easy to be cold-cut.

[0048] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A bag making and heat sealing device for processing plastic flexible packaging bags, characterized in that: It includes a mounting plate, a swing mechanism, a swing frame, a lifting and pressing mechanism, an upper template, a lower template, a heating element and a lifting and bag cutting mechanism; The swing mechanism is arranged on the mounting plate, and the swing mechanism is connected to the swing frame to drive the swing frame to swing up and down; The lifting and pressing mechanism is arranged on the swing frame, the lifting and pressing mechanism is connected to the upper template, and the lower template is arranged at one end of the swing frame away from the swing mechanism; The upper template and the lower template are respectively provided with a receiving cavity, and the heating element is arranged in the receiving cavity to be used for electrically heating the upper template and the lower template; The lower template is used to bear the edge of the plastic flexible packaging bag to be heat-sealed, and the lifting and pressing mechanism is used to drive the upper template to heat-seal and press on the lower template; The lifting bag cutting mechanism is arranged on the mounting plate to perform transverse cutting on the heat-sealed plastic soft packaging bags.

2. The bag making and heat sealing device for plastic flexible packaging bag processing according to claim 1 is characterized in that: The swing mechanism comprises a first motor, a swing shaft, a pulley transmission assembly and a seat bearing; The first motor is arranged at the back of the mounting plate, and the output shaft of the first motor is connected to the swing shaft through the pulley transmission assembly; The seat bearing is sleeve-connected with the end of the swing shaft, clamping seats are arranged on both sides of the swing shaft, and the swing frame is connected with the clamping seats so as to rotate along with the rotation of the swing shaft.

3. The bag making and heat sealing device for processing plastic flexible packaging bags according to claim 2, characterized in that: The lifting and pressing mechanism comprises a lifting cylinder and a connecting rod arm; The lifting cylinder is arranged on both sides of the swing frame, the fixed end of the lifting cylinder is connected to the clamping seat, and the movable end of the lifting cylinder is connected to the middle part of the connecting rod arm; One end of the connecting rod arm is movably connected to the side wall of the swing frame through a pin shaft, and the other end of the connecting rod arm is connected to the upper template through a connecting plate. The lifting cylinder is used to drive the connecting rod arm to rotate around the pin shaft to raise or lower the height of the upper template.

4. The bag making and heat sealing device for processing plastic flexible packaging bags according to claim 1, characterized in that: The lifting bag cutting mechanism comprises a screw lifting assembly, a cutting knife fixing frame and a cross-cutting knife; The screw rod lifting assembly is connected to the cutter fixing frame to drive the cutter fixing frame to move up and down in a vertical direction, and the cross-cutting knife is connected to the cutter fixing frame.

5. The bag making and heat sealing device for processing plastic flexible packaging bags according to claim 4, characterized in that: The screw lifting assembly includes a second motor, a screw, a lifting plate, a sliding rod and a linear bearing; The output shaft of the second motor is connected to the screw rod to drive the screw rod to rotate, and the lifting plate is connected to the screw rod through a nut seat, and the lifting plate can move along the length direction of the screw rod; The two sides of the lifting plate are respectively connected to a sliding rod, the top of the sliding rod is connected to the cutter fixing frame, and the linear bearing is arranged on the back of the mounting plate and is connected to the sliding rod sleeve.

6. The bag making and heat sealing device for processing plastic flexible packaging bags according to claim 5, characterized in that: The screw lifting assembly also includes a first limit sensor and a second limit sensor; The first limit sensor and the second limit sensor are respectively arranged on the upper and lower sides of the mounting plate and located at the side ends of the lifting plate to control the lifting height of the lifting plate.

7. The bag making and heat sealing device for processing plastic flexible packaging bags according to claim 1, characterized in that: Concave-convex textures are respectively arranged on the wall surfaces of the upper template and the lower template facing each other.

8. The bag making and heat sealing device for processing plastic flexible packaging bags according to claim 1, characterized in that: The mounting plate is provided with an avoidance groove for allowing the swing frame to swing up and down.

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