Longitudinal sealing mechanism and vertical roll film packaging machine comprising same

Abstract

The utility model discloses a longitudinal sealing mechanism which is used on a vertical roll film packaging machine, the vertical roll film packaging machine comprises a cylindrical forming mechanism used for rolling a planar packaging film into a cylindrical shape and forming a rolled edge, and the longitudinal sealing mechanism comprises a longitudinal sealing heating strip parallel to the axial direction of the cylindrical forming mechanism and a telescopic device. The longitudinal sealing heating strip is driven by a telescopic device to move towards one side of the curled edge, and the curled edge is folded towards the surface of the cylindrical forming mechanism to be heated and sealed. According to the longitudinal sealing mechanism, the longitudinal sealing heating strip is driven by the telescopic device to fold the turned edge to the surface of the barrel-shaped forming mechanism, heating sealing is carried out when the packaging film continuously moves, intermittent movement of the longitudinal sealing heating strip does not need to be frequently controlled, meanwhile, the longitudinal sealing mechanism and the transverse sealing mechanism are mutually independent, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, and particularly relates to a longitudinal sealing mechanism and a vertical film winding packaging machine comprising the longitudinal sealing mechanism. Background Technique

[0002] The vertical film winding packaging machine combines the functions of bag making and packaging. During the bag making process, the packaging film is first wound into a roll, and then the side seam of the roll is sealed by a vertical sealing device to form a packaging film roll. After that, the packaging film roll is transversely sealed once, then the material to be packaged is added, and then it is transversely sealed again to form a packaging bag.

[0003] A vertical automatic bag making packaging machine proposed in the publication number: CN113291515A discloses that: it includes a main installation frame, a film guiding mechanism, a forming mechanism, a film pulling mechanism, a vertical sealing mechanism and a transverse sealing mechanism installed on the main installation frame in sequence. The film guiding mechanism is mainly used for winding and guiding the packaging film, the forming mechanism is mainly used for turning and winding the packaging film, the film pulling mechanism is mainly used for providing power to pull the packaging film to move, the vertical sealing mechanism is mainly used for sealing the side seam of the packaging film formed by the roll, and the transverse sealing mechanism is mainly used for transversely sealing the packaging film roll after vertical sealing by the vertical sealing mechanism at intervals to form a packaging bag. The invention has a high degree of integration, occupies a small area, does not require two drives, saves costs, saves forming time, greatly improves production efficiency, ensures the tightness of the packaging film, thereby improving the quality of the packaging film during forming, and will not cause damage to the packaging film, and has high production quality.

[0004] After the above device winds the packaging film into a tubular packaging bag through the forming mechanism, it will seal the rolled edge (side seam) of the tubular packaging bag through the vertical sealing mechanism. The vertical sealing mechanism uses two vertical sealing clamps, and a cylinder is used to drive one vertical sealing clamp to move towards the other vertical sealing clamp, and the two vertical sealing clamps cooperate to heat-seal the rolled edge of the tubular packaging bag. This method requires frequent control of the intermittent movement of the vertical sealing clamps, which is more troublesome to use. At the same time, this vertical sealing mechanism needs to be connected to the transverse sealing mechanism through a linkage frame, increasing the operation burden. For this reason, we propose a longitudinal sealing mechanism and a vertical film winding packaging machine comprising the longitudinal sealing mechanism. Content of the Utility Model

[0005] The purpose of the utility model is to provide a longitudinal sealing mechanism and a vertical film winding packaging machine comprising the longitudinal sealing mechanism to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A longitudinal sealing mechanism is used on a vertical film wrapping machine. The vertical film wrapping machine includes a cylindrical forming mechanism for rolling a flat packaging film into a cylinder and forming a curled edge. The longitudinal sealing mechanism includes a longitudinal sealing heating strip axially parallel to the cylindrical forming mechanism and a telescopic device. The longitudinal sealing heating strip is driven by the telescopic device to move towards the side of the curled edge, folding the curled edge towards the surface of the cylindrical forming mechanism and heating and sealing it.

[0008] Further improvement lies in that the telescopic device is arranged at one end of the bracket assembly, and the output end of the telescopic device is connected to the longitudinal sealing heating strip through a mounting seat.

[0009] Further improvement lies in that a protective frame wrapping the mounting seat and the longitudinal sealing heating strip is provided on the outer wall of the output end of the telescopic device.

[0010] Further improvement lies in that a guide rod movably penetrating the protective frame is also provided on the side of the mounting seat away from the longitudinal sealing heating strip.

[0011] Further improvement lies in that a connecting seat is provided at the bottom of the mounting seat. One end of the connecting seat away from the mounting seat extends below the longitudinal sealing heating strip and is inserted with a bolt group. One end of the bolt group facing the longitudinal sealing heating strip is provided with a pressing wheel member for contacting the curled edge, and an elastic member with one end connected to the connecting seat and the other end connected to the pressing wheel member is sleeved on the outer wall of the bolt group.

[0012] Further improvement lies in that a temperature sensor for detecting the temperature of the longitudinal sealing heating strip is provided on the longitudinal sealing heating strip.

[0013] Further improvement lies in that the bracket assembly includes:

[0014] Bracket one;

[0015] Bracket two, rotatably connected to one end of bracket one;

[0016] A positioning seat is arranged on one side of bracket one, and a positioning opening is provided on the side facing bracket two;

[0017] A positioning block is arranged on one side of bracket two, and a positioning protrusion inserted into the positioning opening is provided at one end of the positioning block away from bracket two; and,

[0018] An electromagnet is arranged on bracket one and on the same side as the positioning seat. A magnetic member for attracting the energized electromagnet is provided on the side of the positioning block facing the electromagnet.

[0019] Further improvement lies in that an adjusting member is further included. The adjusting member includes:

[0020] A slider, connected to bracket one;

[0021] Installation blocks, there are two groups, respectively arranged on both sides of the slider. A guide rod that movably penetrates the slider is arranged between the two groups of installation blocks. One of the installation blocks is connected to the vertical film winding packaging machine; and,

[0022] A lead screw, rotatably inserted into one installation block, and one end of the lead screw threadedly penetrates the slider, and the other end is provided with a hand wheel.

[0023] A vertical film winding packaging machine includes a main installation frame. A cylindrical forming mechanism and a longitudinal sealing mechanism as described above are arranged on the main installation frame. It also includes a film guiding mechanism arranged on the main installation frame for inputting the packaging film into the cylindrical forming mechanism, a film pulling mechanism for pulling the packaging film on the outer wall of the cylindrical forming mechanism to move, and a transverse sealing mechanism for transversely sealing the packaging film after vertical sealing by the longitudinal sealing mechanism. The transverse sealing mechanism and the longitudinal sealing mechanism are independently arranged.

[0024] Compared with the prior art, the beneficial effects of the present utility model are:

[0025] The longitudinal sealing mechanism of the present utility model drives a longitudinal sealing heating strip to fold the curled edge towards the surface of the cylindrical forming mechanism through a telescopic device, and performs heat sealing while the packaging film continues to move, without the need to frequently control the intermittent movement of the longitudinal sealing heating strip. At the same time, the longitudinal sealing mechanism and the transverse sealing mechanism are independent of each other, and the operation is simple. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the present utility model;

[0027] Figure 2 Of the present utility model Figure 1 Partial structural schematic diagram;

[0028] Figure 3 Of the present utility model Figure 2 Structural side view;

[0029] Figure 4 Of the present utility model Figure 1 Schematic diagram of the structure from another perspective;

[0030] Figure 5 It is a schematic structural diagram of the vertical film winding packaging machine of the present utility model;

[0031] Figure 6 It is a schematic diagram of the initial state of the curled edge of the present utility model;

[0032] Figure 7 It is a schematic diagram of the final state of the curled edge of the present utility model;

[0033] In the figure: 1. Bracket assembly; 101. First bracket; 102. Second bracket; 103. Positioning seat; 104. Positioning block; 105. Electromagnet; 106. Guide rod; 107. Mounting block; 108. Lead screw; 109. Handwheel; 2. Longitudinal sealing heating strip; 3. Telescopic device; 4. Guide rod; 5. Mounting seat; 6. Protection frame; 7. Temperature sensor; 8. Connecting seat; 9. Bolt group; 10. Pressing wheel part; 11. Elastic part; 12. Main mounting frame; 13. Film guiding mechanism; 14. Tubular forming mechanism; 15. Film pulling mechanism; 16. Transverse sealing mechanism. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] Embodiment 1

[0036] Please refer to the attached Figure 1 - attached Figure 2

[0037] A longitudinal sealing mechanism is used on a vertical film wrapping machine. The vertical film wrapping machine includes a tubular forming mechanism 14 for rolling a flat packaging film into a tube shape and forming a curled edge.

[0038] The longitudinal sealing mechanism includes a longitudinal sealing heating strip 2 axially parallel to the tubular forming mechanism 14 and a telescopic device 3. The longitudinal sealing heating strip 2 is driven by the telescopic device 3 to move towards the side of the curled edge, fold the curled edge towards the surface of the tubular forming mechanism 14 and heat-seal it. The telescopic device 3 is, for example, a hydraulic cylinder or an air cylinder, etc.

[0039] The longitudinal sealing mechanism of this packaging machine only uses a longitudinal sealing heating strip 2. The vertical film wrapping machine rolls a long strip-shaped packaging film into a tubular packaging bag through the tubular forming mechanism 14, and a curled edge is formed on the tubular packaging bag on the tubular forming mechanism 14, that is, the state shown in a in the attached Figure 6 Subsequently, the telescopic device 3 drives the longitudinal sealing heating strip 2 to contact the curled edge and fold the curled edge towards the surface of the tubular forming mechanism 14, that is, the state shown in b in the attached Figure 7 During the downward movement of the packaging film, the longitudinal sealing heating strip 2 heats it to seal. By adopting this method, it is not necessary to frequently control the movement of the vertical sealing structure, nor is it necessary to interlock with the transverse sealing structure. The two can be independent of each other, and the operation is simple.

[0040] The telescopic device 3 is arranged at one end of the bracket assembly 1, and the outer wall of the output end of the telescopic device 3 is connected to the longitudinal sealing heating strip 2 through the mounting seat 5.

[0041] Please refer to the attached Figure 3

[0042] Preferably, a protective frame 6 covering the mounting seat 5 and the longitudinal sealing heating strip 2 is further provided on the outer wall of the telescopic device 3 in this embodiment. One side and the upper and lower ends of the protective frame 6 are hollow. The protective frame 6 plays a protective role to prevent the longitudinal sealing heating strip 2 from scalding the users or being damaged by external factors.

[0043] Preferably, a guide rod 4 movably penetrating through the protective frame 6 is further provided on one side of the mounting seat 5 away from the longitudinal sealing heating strip 2 in this embodiment to ensure the stable movement of the mounting seat 5.

[0044] Preferably, a connecting seat 8 is provided at the bottom of the mounting seat 5 in this embodiment. One end of the connecting seat 8 away from the mounting seat 5 extends below the longitudinal sealing heating strip 2 and is inserted with a bolt group 9. The bolt group 9 includes bolts and nuts sleeved on one end of the bolts, etc.; a pressing wheel member 10 for contacting the curled edge is provided at one end of the bolt group 9 facing the longitudinal sealing heating strip 2. The pressing wheel member 10 includes a pressing wheel seat and a pressing wheel rotatably arranged in the pressing wheel seat. An elastic member 11 with one end connected to the connecting seat 8 and the other end connected to the pressing wheel member 10 is sleeved on the outer wall of the bolt group 9. The elastic member 11 is, for example, a spring. Under the action of the elastic member 11, the pressing wheel member 10 presses the curled edge tightly onto the cylindrical forming mechanism 14, playing a role of further pressing the position where the packaging film is heat-sealed by the longitudinal sealing heating strip 2.

[0045] Preferably, a temperature sensor 7 for detecting the temperature of the longitudinal sealing heating strip 2 is provided on the longitudinal sealing heating strip 2 in this embodiment. The temperature sensor 7 belongs to the prior art and will not be described in detail here.

[0046] Please refer to the attached Figure 4

[0047] Preferably, the bracket assembly 1 in this embodiment includes:

[0048] Bracket one 101;

[0049] Bracket two 102, rotatably connected to one end of bracket one 101;

[0050] Positioning seat 103, provided on one side of bracket one 101, and a positioning opening is formed on the side facing bracket two 102;

[0051] Positioning block 104, provided on one side of bracket two 102, and a positioning protrusion inserted into the positioning opening is provided at one end away from bracket two 102; and,

[0052] Electromagnet 105, provided on bracket one 101 and on the same side as the positioning seat 103, and a magnetic member for attracting the energized electromagnet 105 is provided on the side of the positioning block 104 facing the electromagnet 105.

[0053] When the electromagnet 105 corresponds to the magnetic part, the first bracket 101 and the second bracket 102 are perpendicular to each other. By turning on the electromagnet 105 to adsorb the magnetic part, the first bracket 101 and the second bracket 102 can be fixed, so that the second bracket 102 cannot rotate relative to the first bracket 101. When maintenance is needed or it is not in use, etc., the electromagnet 105 can be disconnected, and the longitudinal sealing heating strip 2 can swing outwards relative to the first bracket 101 along with the second bracket 102.

[0054] Preferably, this embodiment further includes an adjusting member, and the adjusting member includes:

[0055] A slider, connected to the first bracket 101;

[0056] There are two sets of mounting blocks 107, which are respectively arranged on both sides of the slider. A guide rod 106 that penetrates the slider movably is arranged between the two sets of mounting blocks 107 to ensure the stable movement of the slider. One of the mounting blocks 107 is connected to the vertical film wrapping machine; and,

[0057] A lead screw 108 is rotatably inserted into one of the mounting blocks 107. A bearing is provided at the connection between the lead screw 108 and the mounting block 107. One end of the lead screw 108 threadedly penetrates the slider, and the other end is provided with a handwheel 109. By rotating the handwheel 109 to drive the lead screw 108, the slider can drive the first bracket 101 to move along the guide rod 106. The axis of the guide rod 106 is parallel to the length direction of the first bracket 101. In this way, the position of the longitudinal sealing heating strip 2 can be further finely adjusted.

[0058] A vertical film wrapping machine includes a main mounting frame 12. A cylindrical forming mechanism 14 and the longitudinal sealing mechanism as described above are provided on the main mounting frame 12. It further includes a film guiding mechanism 13 for inputting the packaging film into the cylindrical forming mechanism 14, a film pulling mechanism 15 for pulling the packaging film on the outer wall of the cylindrical forming mechanism 14 to move, and a transverse sealing mechanism 16 for transversely sealing the packaging film after vertical sealing by the longitudinal sealing mechanism. The transverse sealing mechanism 16 and the longitudinal sealing mechanism are independently arranged;

[0059] The main mounting frame 12, the cylindrical forming mechanism 14, the film guiding mechanism 13, the film pulling mechanism 15, and the transverse sealing mechanism 16 are all conventional structures in the art. For example, they are disclosed in a vertical automatic bag-making packaging machine proposed in the publication number: CN113291515A. It should be noted that the transverse sealing mechanism 16 and the longitudinal sealing mechanism in this vertical film wrapping machine are not connected by a linkage frame.

[0060] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A longitudinal sealing mechanism for use in a vertical roll film packaging machine, the vertical roll film packaging machine comprising a cylindrical forming mechanism (14) for rolling a flat packaging film into a cylindrical shape and forming a curling edge, characterized in that: The longitudinal sealing mechanism comprises a longitudinal sealing heating strip (2) and a telescopic device (3) which are axially parallel to the cylindrical forming mechanism (14); the longitudinal sealing heating strip (2) is driven by the telescopic device (3) to move toward one side of the curling edge, fold the curling edge toward the surface of the cylindrical forming mechanism (14) and heat and seal it.

2. A longitudinal sealing mechanism according to claim 1, characterized in that: The telescopic device (3) is arranged at one end of the support assembly (1), and the output end of the telescopic device (3) is connected to the longitudinal sealing heating strip (2) via a mounting seat (5).

3. A longitudinal sealing mechanism according to claim 2, characterized in that: The outer wall of the output end of the telescopic device (3) is provided with a protective frame (6) that wraps the mounting seat (5) and the longitudinal sealing heating strip (2).

4. A longitudinal sealing mechanism according to claim 3, characterized in that: A guide rod (4) that movably penetrates the protection frame (6) is also provided on the side of the mounting seat (5) away from the longitudinal sealing heating strip (2).

5. A longitudinal sealing mechanism according to claim 2, characterized in that: A connecting seat (8) is provided at the bottom of the mounting seat (5); one end of the connecting seat (8) away from the mounting seat (5) extends to below the longitudinal sealing heating strip (2) and is inserted with a bolt group (9); one end of the bolt group (9) facing the longitudinal sealing heating strip (2) is provided with a pressure wheel member (10) for contacting the curling edge; the outer wall of the bolt group (9) is sleeved with an elastic member (11) with one end connected to the connecting seat (8) and the other end connected to the pressure wheel member (10).

6. A longitudinal sealing mechanism according to claim 1, characterized in that: The longitudinal sealing heating strip (2) is provided with a temperature sensor (7) for detecting the temperature of the longitudinal sealing heating strip (2).

7. A longitudinal sealing mechanism according to claim 2, characterized in that: The support assembly (1) comprises: Bracket one (101); Bracket 2 (102), the rotation axis is connected to one end of bracket 1 (101); A positioning seat (103) is arranged on one side of the first bracket (101), and has a positioning opening on the side facing the second bracket (102); A positioning block (104) is disposed on one side of the second bracket (102), and an end thereof away from the second bracket (102) is provided with a positioning protrusion inserted into the positioning opening; and, The electromagnet (105) is arranged on the bracket (101) and on the same side as the positioning seat (103); the positioning block (104) is provided with a magnetic member on the side facing the electromagnet (105) for attracting the electromagnet (105) after power is supplied.

8. A longitudinal sealing mechanism according to claim 7, characterized in that: Also included is an adjustment member, the adjustment member comprising: A slider connected to the bracket 1 (101); There are two groups of mounting blocks (107), which are respectively arranged on both sides of the slider, and a guide rod (106) that movably penetrates the slider is arranged between the two groups of mounting blocks (107), and one of the mounting blocks (107) is connected to the vertical roll film packaging machine; and, A lead screw (108) is rotatably inserted on a mounting block (107), one end of the lead screw (108) is threadedly passed through a slide block, and the other end is provided with a hand wheel (109).

9. A vertical roll film packaging machine, characterized in that: It comprises a mounting main frame (12), on which a cylindrical forming mechanism (14) and a longitudinal sealing mechanism as described in any one of claims 1 to 8 are provided, and also comprises a film guiding mechanism (13) arranged on the mounting main frame (12) for inputting a packaging film into the cylindrical forming mechanism (14), a film pulling mechanism (15) for pulling the outer wall packaging film of the cylindrical forming mechanism (14) to move, and a transverse sealing mechanism (16) for transversely sealing the packaging film after being vertically sealed by the longitudinal sealing mechanism, wherein the transverse sealing mechanism (16) and the longitudinal sealing mechanism are arranged independently of each other.

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