Linear magnetic suspension plastic film packaging equipment

Abstract

The utility model discloses a linear magnetic levitation plastic packaging film equipment, including upper horizontal sealing subassembly, lower horizontal sealing subassembly and cutter subassembly, upper horizontal sealing subassembly includes upper horizontal sealing piece, drive piece and air inlet pipe, the inner cavity of upper horizontal sealing piece is provided with ventilation cavity, one end of upper horizontal sealing piece is provided with heat sealing part. According to the linear magnetic suspension plastic film packaging equipment, by arranging a ventilation cavity and a blowing groove, when an upper transverse sealing assembly and a lower transverse sealing assembly are matched to transversely seal a film, an upper transverse sealing piece gradually gets close to the direction of the film under the action of a driving piece, and an air inlet pipe continuously injects air into the ventilation cavity; part of air is guided by the air blowing groove and then blown out in the fixed direction, so that the film is blown and impacted to be unfolded, an upper transverse sealing assembly and a lower transverse sealing assembly of the transverse sealing mechanism are combined, the film is in an unfolded state when heat sealing is conducted on the film, and the problems that the film is too thick due to wrinkles or overlapping, the heat sealing effect is poor, and the sealing effect is poor are avoided. And an opening problem exists.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a linear magnetic levitation plastic film sealing device. Background Art

[0002] Plastic film equipment is used to package products, thereby protecting them, beautifying them, and promoting sales. Traditional plastic film equipment includes pillow packaging machines, horizontal packaging machines, liquid filling machines, etc. Among them, pillow packaging machines are automatic continuous shrink packaging equipment. They have the advantages of good stability, low maintenance cost, and a wide adjustment range. They can be used for shrink packaging of any shrink film.

[0003] When packaging, traditional pillow packaging machines transport products in a straight line so that the products enter the film. The film is then sealed longitudinally using a longitudinal sealing mechanism, and then transversely sealed using a transverse sealing mechanism according to product size requirements. At the same time, the film is cut using a cutter mechanism to complete the packaging of the product. When the transverse sealing mechanism is used to transversely seal and cut the product, wrinkles may appear or parts of the film may overlap because the film is directly heat-sealed through the transverse sealing mechanism, resulting in an overly thick film, poor heat sealing effect, and still openings. Utility Model Content

[0004] Aiming at the problem that the film in the prior art is wrinkled, resulting in poor heat sealing effect and the existence of openings, the utility model provides a linear magnetic levitation plastic film sealing device.

[0005] The utility model discloses a linear magnetic levitation plastic film sealing device comprising: an upper horizontal sealing assembly, a lower horizontal sealing assembly and a cutter assembly, the upper horizontal sealing assembly comprising an upper horizontal sealing member, a driving member and an air inlet pipe, the inner cavity of the upper horizontal sealing member is provided with a ventilation cavity, one end of the upper horizontal sealing member is provided with a heat sealing portion, the end of the upper horizontal sealing member close to the heat sealing portion is provided with a blowing groove connecting the ventilation cavity with the outside, and the blowing groove is inclined from the middle of the upper horizontal sealing member to both ends, the driving member is fixedly connected to the end of the upper horizontal sealing member away from the heat sealing portion, the air inlet pipe is fixedly connected to the upper horizontal sealing member, and the inner cavity of the air inlet pipe is connected to the ventilation cavity; the lower horizontal sealing assembly is arranged on a side of the upper horizontal sealing member away from the driving member; and the cutter assembly is movably sleeved on the ventilation cavity to cut the film.

[0006] Preferably, the upper transverse sealing assembly further includes a first elastic member, and two ends of the first elastic member are fixedly connected to the driving member and the upper transverse sealing member respectively.

[0007] Preferably, the inner cavity of the upper transverse sealing member is provided with an upper knife groove for allowing the cutter assembly to extend out of the ventilation cavity.

[0008] Preferably, the cutter assembly includes a cutter piece and a second elastic piece, the cutter piece is arranged in the upper cutter groove, and two ends of the second elastic piece are fixedly connected to the cutter piece and the top wall of the ventilation cavity respectively.

[0009] Preferably, the cutter assembly further comprises a connecting plate, which is disposed between the second elastic member and the cutter member and is fixedly connected to both of them.

[0010] Preferably, one second elastic member and one connecting plate form a group, and two groups of connecting plates and second elastic members are respectively arranged on both sides of one end of the cutting member close to the driving member.

[0011] Preferably, the lower transverse sealing assembly includes a lower transverse sealing member, and a sealing portion is provided at one end of the lower transverse sealing member close to the upper transverse sealing member.

[0012] Preferably, a lower knife groove is provided in the middle of the lower transverse sealing member close to one end of the upper transverse sealing member.

[0013] Preferably, the inner cavity of the upper transverse sealing member is provided with baffles located on both sides of the cutter member, and the baffles are fixedly connected to the bottom wall of the upper transverse sealing member.

[0014] Preferably, a linear magnetic levitation plastic film sealing device further includes a conveying component, which is arranged on one side of the upper transverse sealing component and transports the material to be cut toward the upper transverse sealing component.

[0015] Compared with the existing technology, the utility model provides a linear magnetic levitation plastic film sealing device with the following beneficial effects:

[0016] 1. The linear magnetic levitation plastic film sealing equipment is provided with a ventilation cavity and a blowing groove. When the upper and lower transverse sealing assemblies cooperate to seal the film transversely, the upper transverse sealing member gradually approaches the film under the action of the driving member, and the air inlet pipe continuously injects gas into the ventilation cavity. Part of the gas is guided by the blowing groove and blown out in a fixed direction, thereby blowing the film and impacting the film to unfold, so that the upper and lower transverse sealing assemblies of the transverse sealing mechanism are merged. When the film is heat-sealed, the film is in an unfolded state, avoiding the problem of the film being too thick due to wrinkles or overlaps, resulting in poor heat sealing effect and the existence of openings.

[0017] 2. The linear magnetic levitation plastic film sealing equipment is provided with a connecting plate and a second elastic member, so that when the upper transverse sealing assembly and the lower transverse sealing assembly overlap on one side, when the film is heat-sealed, the lower transverse sealing assembly blocks the blowing groove of the upper transverse sealing assembly, so that the pressure cavity in the ventilation cavity gradually increases, which can generate pressure on the connecting plate, thereby pressing the connecting plate and the cutter member together, so that the cutter member quickly cuts the film, and after the cutting is completed, the upper transverse sealing assembly and the lower transverse sealing assembly are separated, the blowing groove is released, and the pressure cavity in the ventilation cavity is quickly reduced. The cutter member and the connecting plate will automatically reset under the action of the second elastic member, so that the cutter member is always in the upper transverse sealing assembly under normal conditions, avoiding scratches on workers or rubbing of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the structure of the upper horizontal seal assembly and the lower horizontal seal assembly of the utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the upper transverse sealing assembly structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the upper transverse sealing component of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the cutter assembly of the utility model;

[0023] Figure 6 For this utility model Figure 2 A magnified schematic diagram of the structure in the middle.

[0024] In the accompanying drawings, 1. upper transverse sealing assembly; 2. lower transverse sealing assembly; 3. cutter assembly; 4. conveying assembly;

[0025] 11. Upper transverse sealing member; 12. Driving member; 13. Air inlet pipe; 14. First elastic member; 111. Ventilation cavity; 112. Heat sealing portion; 113. Air blowing groove; 114. Upper knife groove; 115. Baffle;

[0026] 21. Lower horizontal seal; 211. Sealing portion; 212. Lower knife groove;

[0027] 31. Cutter member; 32. Second elastic member; 33. Connecting plate. DETAILED DESCRIPTION

[0028] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0029] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0030] Reference Figure 2-Figure 4 and Figure 6 , Figure 2 This is a three-dimensional schematic diagram of the structure of the upper horizontal seal assembly and the lower horizontal seal assembly of the utility model; Figure 3 This is a three-dimensional schematic diagram of the upper transverse sealing assembly structure of the utility model; Figure 4 This is a schematic diagram of the structure of the upper transverse sealing component of the utility model; Figure 6 For this utility model Figure 2 A schematic diagram of the structure at point A in the middle. A linear magnetic levitation plastic film sealing device includes: an upper transverse sealing component 1, a lower transverse sealing component 2 and a cutter component 3. The upper transverse sealing component 1 includes an upper transverse sealing member 11, a driving member 12 and an air inlet pipe 13. The inner cavity of the upper transverse sealing member 11 is provided with a ventilation cavity 111. A heat sealing portion 112 is provided at one end of the upper transverse sealing member 11. The heat sealing portion 112 is heated by electricity and controls the temperature within the required range for heat sealing of the film. An air blowing groove 113 is provided at one end of the upper transverse sealing member 11 close to the heat sealing portion 112 to connect the air breathing cavity 111 with the outside world. The air blowing groove 113 is tilted from the middle of the upper transverse sealing member 11 to both ends, so that the gas in the air breathing cavity 111 can be discharged outward through the air blowing groove 113. Under the action of the tilted setting of the air blowing groove 113, the discharged gas can blow the film outward, thereby In order to unfold the folded or wrinkled part of the film, the driving member 12 is fixedly connected to the end of the upper transverse sealing member 11 away from the heat-sealing portion 112, and the driving member 12 is a driving device such as a cylinder or a hydraulic cylinder that can drive the driving member 12 to move. The air inlet pipe 13 is fixedly connected to the upper transverse sealing member 11, and the inner cavity of the air inlet pipe 13 is connected to the ventilation cavity 111. The air pump can be connected to the air inlet pipe 13 so that gas can be continuously injected into the ventilation cavity 111; the lower transverse sealing assembly 2 is arranged on the side of the upper transverse sealing member 11 away from the driving member 12, and the lower transverse sealing assembly 2 is also heated to the same temperature as the heat-sealing portion 112 by electric heating, and the driving member 12 can be driven in a direction close to the upper transverse sealing member 11 by another driving device; and the cutter assembly 3 is movably connected to the ventilation cavity 111 to cut the film.

[0031] The linear magnetic levitation plastic film sealing device is provided with a ventilation cavity 111 and a blowing groove 113, so that when the upper horizontal sealing component 1 and the lower horizontal sealing component 2 cooperate to perform horizontal sealing on the film, the upper horizontal sealing component 11 gradually approaches the film under the action of the driving component 12, and the air inlet pipe 13 continuously injects gas into the ventilation cavity 111. Part of the gas is guided by the blowing groove 113 and blown out in a fixed direction, thereby blowing the film and impacting the film to unfold, so that the upper horizontal sealing component 1 and the lower horizontal sealing component 2 of the horizontal sealing mechanism are merged. When the film is heat-sealed, the film is in an unfolded state, which avoids the film being too thick due to wrinkles or overlaps, resulting in poor heat sealing effect and the existence of openings.

[0032] The upper transverse sealing assembly 1 further includes a first elastic member 14, the two ends of which are fixedly connected to the driving member 12 and the upper transverse sealing member 11, respectively. When the upper transverse sealing assembly 1 and the lower transverse sealing assembly 2 are in contact and heat-sealing the film, the first elastic member 14 can control the pressure between the upper transverse sealing assembly 1 and the lower transverse sealing assembly 2 from being too high.

[0033] The inner cavity of the upper transverse sealing member 11 is provided with an upper knife groove 114 for the cutter assembly 3 to extend out of the ventilation cavity 111 .

[0034] Reference Figure 5 , Figure 5 The diagram below is a schematic diagram of the cutter assembly structure of the present invention. The cutter assembly 3 comprises a cutter member 31 and a second elastic member 32. The cutter member 31 is positioned within the upper cutter slot 114. The ends of the second elastic member 32 are fixedly connected to the cutter member 31 and the top wall of the vent chamber 111, respectively. The second elastic member 32 is a tension spring. The cutter member 31 extends out of the upper cutter slot 114 under the action of an external force. After severing the film, the cutter member 31 automatically returns to its original position and retracts into the upper cutter slot 114 upon removal of the external force.

[0035] Furthermore, the cutting edge of the cutting blade 31 is inclined from one side to the other side, thereby improving the film cutting efficiency.

[0036] The cutter assembly 3 further includes a connecting plate 33 , which is disposed between the second elastic member 32 and the cutter member 31 and is fixedly connected to both.

[0037] A second elastic member 32 and a connecting plate 33 form a group, and two groups of connecting plates 33 and second elastic members 32 are respectively disposed on both sides of the cutter member 31 close to one end of the driving member 12 .

[0038] By providing two sets of connecting plates 33 and the second elastic member 32, when the air pressure in the ventilation chamber 111 gradually increases, the connecting plates 33 can be pushed toward the lower transverse sealing assembly 2 under the action of pressure, thereby pushing the cutter member 31 outward. Since there is a gap between the two sets of connecting plates 33 and the second elastic member 32, the gas injected into the ventilation chamber 111 through the air inlet pipe 13 can be discharged outward through the blowing groove 113 first. The thrust on the connecting plates 33 can only be applied when the blowing groove 113 is blocked.

[0039] The linear magnetic levitation plastic film sealing device is provided with a connecting plate 33 and a second elastic member 32, so that when the upper transverse sealing component 1 and the lower transverse sealing component 2 overlap on one side and heat-seal the film, the lower transverse sealing component 2 blocks the blowing groove of the upper transverse sealing component 1, so that the pressure cavity in the ventilation cavity 111 gradually increases, which can generate pressure on the connecting plate 33, thereby pressing the connecting plate 33 and the cutting member 31 together, so that the cutting member 31 quickly cuts the film, and after the cutting is completed, the upper transverse sealing component 1 and the lower transverse sealing component 2 are separated, the blowing groove 113 is released, thereby quickly reducing the pressure cavity in the ventilation cavity 111, and the cutting member 31 and the connecting plate 33 will automatically reset under the action of the second elastic member 32, so that the cutting member 31 is always in the upper transverse sealing component 1 under normal conditions, avoiding scratches on workers or damage to the film.

[0040] The lower transverse sealing assembly 2 includes a lower transverse sealing member 21 . A sealing portion 211 is provided at one end of the lower transverse sealing member 21 close to the upper transverse sealing member 11 . The sealing portion 211 is heated electrically to cooperate with the heat sealing portion 112 to heat-seal the film.

[0041] A lower knife groove 212 is formed in the middle of the lower transverse seal 21 near one end of the upper transverse seal 11. After the cutter 31 extends out of the upper knife groove 114 and completes cutting of the film, it can extend into the lower knife groove 212 to prevent the cutter 31 from contacting the lower transverse seal 21 and causing damage to the lower transverse seal 21.

[0042] The inner cavity of the transverse sealing member 11 of a linear magnetic levitation plastic film sealing device is provided with baffles 115 located on both sides of the cutter member 31, and the baffles 115 are fixedly connected to the bottom wall of the upper transverse sealing member 11, so that the cutter member 31 can be guided and limited by the baffles 115. By providing the baffles 115, the gap between the cutter member 31 and the upper transverse sealing member 11 is reduced, thereby preventing the gas in the ventilation cavity 111 from leaking through the gap between the cutter member 31 and the upper transverse sealing member 11 after the blowing groove 113 is closed by the lower transverse sealing member 21, resulting in the connection plate 33 being unable to receive pressure, and the cutter member 31 being unable to cut the film.

[0043] Reference Figure 1 , Figure 1The linear magnetic levitation plastic film sealing device further comprises a conveying assembly 4 , which is arranged on one side of the upper transverse sealing assembly 1 and transmits the material to be cut toward the upper transverse sealing assembly 1 .

[0044] In the description of the present invention, it should be understood that the terms "middle", "length", "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0045] In the present invention, unless otherwise expressly specified or limited, a first feature "on" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. "Multiple" means at least two, such as two or three, unless otherwise expressly specified or limited.

[0046] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0047] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention without creative work should be included in the scope of protection of the present invention.

Claims

1. A linear magnetic levitation plastic film sealing device, characterized in that: include: An upper transverse sealing assembly (1) comprises an upper transverse sealing member (11), a driving member (12) and an air inlet pipe (13), wherein an inner cavity of the upper transverse sealing member (11) is provided with a ventilation cavity (111), one end of the upper transverse sealing member (11) is provided with a heat sealing portion (112), an end of the upper transverse sealing member (11) close to the heat sealing portion (112) is provided with an air blowing groove (113) for connecting the ventilation cavity (111) with the outside, and the air blowing groove (113) is inclined from the middle of the upper transverse sealing member (11) to both ends, the driving member (12) is fixedly connected to the end of the upper transverse sealing member (11) away from the heat sealing portion (112), the air inlet pipe (13) is fixedly connected to the upper transverse sealing member (11), and the inner cavity of the air inlet pipe (13) is connected to the ventilation cavity (111); a lower transverse sealing assembly (2), which is arranged on a side of the upper transverse sealing member (11) away from the driving member (12); and The cutter assembly (3) is movably sleeved in the ventilation cavity (111) and cuts the film.

2. The linear magnetic levitation plastic film sealing device according to claim 1, characterized in that: The upper transverse sealing assembly (1) further comprises a first elastic member (14), wherein two ends of the first elastic member (14) are fixedly connected to the driving member (12) and the upper transverse sealing member (11), respectively.

3. The linear magnetic levitation plastic film sealing device according to claim 1, characterized in that: The inner cavity of the upper transverse sealing member (11) is provided with an upper knife groove (114) for the cutter assembly (3) to extend out of the ventilation cavity (111).

4. The linear magnetic levitation plastic film sealing device according to claim 3, characterized in that: The cutter assembly (3) comprises a cutter piece (31) and a second elastic piece (32); the cutter piece (31) is arranged in the upper cutter groove (114); and two ends of the second elastic piece (32) are fixedly connected to the cutter piece (31) and the top wall of the ventilation cavity (111), respectively.

5. The linear magnetic levitation plastic film sealing device according to claim 4, characterized in that: The cutter assembly (3) further comprises a connecting plate (33), wherein the connecting plate (33) is arranged between the second elastic member (32) and the cutter member (31), and is fixedly connected to both of them.

6. The linear magnetic levitation plastic film sealing device according to claim 5, characterized in that: One second elastic member (32) and one connecting plate (33) form a group, and two groups of connecting plates (33) and second elastic members (32) are respectively arranged on both sides of one end of the cutting member (31) close to the driving member (12).

7. The linear magnetic levitation plastic film sealing device according to claim 1, characterized in that: The lower transverse sealing assembly (2) comprises a lower transverse sealing member (21), and a sealing portion (211) is provided at one end of the lower transverse sealing member (21) close to the upper transverse sealing member (11).

8. The linear magnetic levitation plastic film sealing device according to claim 7, characterized in that: A lower knife groove (212) is provided in the middle of the lower transverse sealing member (21) close to one end of the upper transverse sealing member (11).

9. The linear magnetic levitation plastic film sealing device according to claim 4, characterized in that: The inner cavity of the upper transverse sealing member (11) is provided with baffles (115) located on both sides of the cutter member (31), and the baffles (115) are fixedly connected to the bottom wall of the upper transverse sealing member (11).

10. The linear magnetic levitation plastic film sealing device according to any one of claims 1 to 9, characterized in that: It also includes a conveying component (4), which is arranged on one side of the upper transverse sealing component (1) and transports the material to be cut in the direction of the upper transverse sealing component (1).

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