Edge sealing mechanism of bag breaking and opening packaging machine

Abstract

An edge sealing mechanism of a bag breaking and opening packaging machine comprises a supporting frame, a longitudinal heat sealing unit, a longitudinal cold sealing unit and a transverse heat sealing unit, the longitudinal heat sealing unit comprises a first longitudinal heat sealing roller structure and a second longitudinal heat sealing roller structure, and the longitudinal cold sealing unit comprises a first longitudinal cold sealing roller structure and a second longitudinal cold sealing roller structure. The transverse heat sealing unit comprises a supporting roller structure and a transverse heat sealing roller structure, two first positioning grooves are formed in the supporting frame, first sliding bearing pedestals are arranged in the two first positioning grooves respectively, and a first adjusting device is installed at a first lateral opening of each first positioning groove; two second positioning grooves are formed in the supporting frame, second sliding bearing pedestals are arranged in the two second positioning grooves respectively, and a second adjusting device is installed at a second lateral opening of each second positioning groove; the supporting frame is provided with two third positioning grooves, third sliding bearing pedestals are arranged in the two third positioning grooves respectively, and a third adjusting device is installed on a third lateral opening of each third positioning groove.

Description

Technical Field

[0001] The utility model relates to an edge sealing mechanism of a folding bag packaging machine. Background Art

[0002] At present, the edge sealing mechanism of the folding and opening bag packaging machine used for manufacturing packaging bags that are easy to break and open (hereinafter referred to as folding and opening bags) generally includes a longitudinal heat sealing unit, a longitudinal cold sealing unit and a transverse heat sealing unit, which are collectively referred to as working units in this article. For example, a folding and opening bag fully automatic packaging machine disclosed in a Chinese patent document with authorization announcement number CN116101542B and the name "a folding and opening bag fully automatic packaging machine" includes a frame and a control box arranged on one side of the frame, an electric drive system is arranged in the control box, a central control panel for controlling the electric drive system is arranged on one side of the frame, and a conveyor, a bottom film feeding mechanism, a guide mechanism, a cutting mechanism, a tensioner, a material injection mechanism, an edge sealing mechanism, a cover film feeding mechanism, a marking mechanism, a slitting mechanism and a driving mechanism are arranged on one side of the frame. Its edge sealing mechanism includes a pair of longitudinal heat-sealing rollers and a pair of longitudinal cold-sealing rollers. The longitudinal heat-sealing rollers and longitudinal cold-sealing rollers are both rotatably connected to one side of the frame and located below the injection nozzle. The longitudinal cold-sealing rollers are located below the longitudinal heat-sealing rollers. The edge sealing mechanism also includes a supporting roller and a transverse sealing roller. The supporting roller and the transverse sealing roller are used in combination and are both rotatably connected to one side of the frame and located below the longitudinal cold-sealing rollers.

[0003] However, the applicant found that the components of the edge sealing mechanism are all installed on the support frame of the frame. However, there is no component that can adjust the pressure between a pair of longitudinal heat-sealing rollers, a pair of longitudinal cold-sealing rollers, and between the support roller and the transverse sealing roller (the above three are referred to as a pair of working components of the working unit in this application), which makes it difficult for the staff to adjust the pressure between the two according to the actual situation, which is very inconvenient to operate and seriously affects the normal production. Utility Model Content

[0004] The purpose of the utility model is to provide an edge sealing mechanism for a folding bag packaging machine, which can conveniently and quickly adjust the pressure between a pair of working parts of each working unit. The technical solution adopted is as follows:

[0005] A sealing mechanism for a foldable bag packaging machine, comprising a support frame and a longitudinal heat-sealing unit, a longitudinal cold-sealing unit and a transverse heat-sealing unit respectively mounted on the support frame and distributed in sequence from top to bottom, the longitudinal heat-sealing unit comprising a first longitudinal heat-sealing roller structure and a second longitudinal heat-sealing roller structure, the longitudinal cold-sealing unit comprising a first longitudinal cold-sealing roller structure and a second longitudinal cold-sealing roller structure, the transverse heat-sealing unit comprising a support roller structure and a transverse heat-sealing roller structure, characterized in that: the support frame has two first positioning grooves with first lateral openings, the two first positioning grooves are respectively provided with first slidable bearing seats that can slide along the first positioning grooves, the first longitudinal heat-sealing roller structure of the longitudinal heat-sealing unit is rotatably mounted on the support frame at both ends, the second longitudinal heat-sealing roller structure is respectively provided in two first slidable bearing seats, the first lateral opening of each first positioning groove is provided with a first adjusting device, the first adjusting device has a first action end, the first action end applies pressure to the first slidable bearing seat to limit the first slidable bearing seat in the first positioning groove; the support frame has two second A positioning groove, two second positioning grooves are respectively provided with second slidable bearing seats that can slide along the second positioning groove, two ends of the first longitudinal cold sealing roller structure of the longitudinal cold sealing unit are rotatably mounted on the support frame, two ends of the second longitudinal cold sealing roller structure are respectively arranged in two second slidable bearing seats, the second lateral opening of each second positioning groove is installed with a second adjusting device, the second adjusting device has a second action end, the second action end applies pressure to the second slidable bearing seat, and the second slidable bearing seat is limited in the second positioning groove; the support frame has two third positioning grooves with third lateral openings, the two third positioning grooves are respectively provided with third slidable bearing seats that can slide along the third positioning groove, the two ends of the support roller structure of the transverse heat sealing unit are rotatably mounted on the support frame, the two ends of the transverse heat sealing roller structure are respectively arranged in two third slidable bearing seats, the third lateral opening of each third positioning groove is installed with a third adjusting device, the third adjusting device has a third action end, the third action end applies pressure to the third slidable bearing seat, and the third slidable bearing seat is limited in the third positioning groove.

[0006] In a preferred solution, the first adjusting device is a pneumatic elastic adjusting device or a screw adjusting device; the second adjusting device is a pneumatic elastic adjusting device or a screw adjusting device; and the third adjusting device is a pneumatic elastic adjusting device or a screw adjusting device.

[0007] A more optimal solution is that the pneumatic elastic adjustment device includes an adjustment seat and an adjustment push block. The adjustment seat has a piston cavity, an outer side wall, and an inner side wall. The outer side wall of the adjustment seat is equipped with a high-pressure gas inlet and outlet nozzle connected to an external high-pressure gas source, and a piston is installed in the piston cavity. The inner side wall of the adjustment seat is provided with a through hole, and the adjustment push block is installed on the through hole, and the adjustment push block is connected to the piston. High-pressure gas is input or discharged into the adjustment seat through the high-pressure gas inlet and outlet nozzle, forcing the piston to move in the piston cavity, thereby increasing or decreasing the thrust of the adjustment push block on the corresponding slidable bearing seat, thereby adjusting the pressure between the first longitudinal heat sealing roller structure and the second longitudinal heat sealing roller structure of the longitudinal heat sealing unit, or adjusting the pressure between the first longitudinal cold sealing roller structure and the second longitudinal cold sealing roller structure of the longitudinal cold sealing unit, or adjusting the pressure between the support roller structure and the transverse heat sealing roller structure of the transverse heat sealing unit. Such a structural design makes the adjustment push block elastic, and no excessive pressure will be generated between the two mutually contacting and matching accessories, and it can automatically respond to unexpected situations of excessive pressure, avoiding adverse effects on components and processed objects due to excessive pressure.

[0008] In a more optimal solution, the screw adjustment device includes a mounting seat and a bolt, a screw hole is opened between the inner wall and the outer wall of the mounting seat, the bolt is threadedly connected to the screw hole, and the working end of the bolt passes through the screw hole and extends to the outer side of the inner wall of the mounting seat. In such a structural design, since the bolt is not elastic, once it is found that the pressure is too high, it will have an adverse effect on the component and / or the workpiece, and the operator needs to manually adjust to solve the problem.

[0009] A preferred solution is that the first longitudinal heat-sealing roller structure includes a first rotating shaft and a plurality of first longitudinal heat-sealing wheels, both ends of the first rotating shaft are rotatably mounted on a support frame, and all the first longitudinal heat-sealing wheels are respectively mounted on the first rotating shaft; the second longitudinal heat-sealing roller structure includes a second rotating shaft and a plurality of second longitudinal heat-sealing wheels, both ends of the second rotating shaft are respectively arranged in two first slidable bearing seats, and all the second longitudinal heat-sealing wheels are respectively mounted on the second rotating shaft, and the number of the second longitudinal heat-sealing wheels is the same as that of the first longitudinal heat-sealing wheels, and they correspond one to one and cooperate with each other.

[0010] A preferred solution is that the first longitudinal cold sealing roller structure includes a third rotating shaft and multiple first longitudinal cold sealing wheels, both ends of the third rotating shaft are rotatably mounted on the support frame, and all the first longitudinal cold sealing wheels are respectively mounted on the third rotating shaft; the second longitudinal cold sealing roller structure includes a fourth rotating shaft and multiple second longitudinal cold sealing wheels, both ends of the fourth rotating shaft are respectively arranged in two second slidable bearing seats, and all the second longitudinal cold sealing wheels are respectively mounted on the fourth rotating shaft, and the number of the second longitudinal cold sealing wheels and the first longitudinal cold sealing wheels is the same and they correspond one to one and cooperate with each other.

[0011] A better solution is that the edge banding mechanism also includes a longitudinal edge banding drive unit, which includes a first servo motor and a first gear group. The first gear group includes five first transmission gears, and the five first transmission gears are respectively installed on the first output shaft, the first rotating shaft, the second rotating shaft, the third rotating shaft, and the fourth rotating shaft of the first servo motor. The first servo motor drives the first output shaft, the first rotating shaft, the second rotating shaft, the third rotating shaft, and the fourth rotating shaft to rotate through the first gear group.

[0012] A better solution is that the support roller structure includes a fifth rotating shaft and a support roller body, and the two ends of the fifth rotating shaft are rotatably mounted on the support frame; the transverse heat sealing roller structure includes a sixth rotating shaft and a transverse heat sealing roller body, and the two ends of the sixth rotating shaft are respectively arranged in two third slidable bearing seats, and the transverse heat sealing roller body is installed on the fourth rotating shaft, and the transverse heat sealing roller body corresponds to and cooperates with the support roller body.

[0013] A better solution is that the edge banding mechanism also includes a transverse edge banding drive unit, which includes a second servo motor and a second gear group. The second gear group includes three second transmission gears, and the three second transmission gears are respectively installed on the second output shaft, the fifth rotating shaft, and the sixth rotating shaft of the second servo motor. The second servo motor drives the fifth rotating shaft and the sixth rotating shaft to rotate through the second gear group.

[0014] Compared with the prior art, the utility model has the following beneficial effects: since the longitudinal heat sealing unit, the longitudinal cold sealing unit and the transverse heat sealing unit respectively use adjustment devices to adjust the working pressure, the quality of the folded bag product can be effectively guaranteed; and the adjustment device can select a pneumatic elastic adjustment device or a screw adjustment device according to the actual needs of the product; the adjustment push block of the pneumatic elastic adjustment device is elastic, and no excessive pressure will be generated between the two mutually contacting and matching accessories, and the pneumatic elastic adjustment device can automatically respond to unexpected situations of excessive pressure, avoiding adverse effects on components and processed objects due to excessive pressure; the screw adjustment device is low in cost, but because the bolts are not elastic, once it is found that the pressure is too high, it will have adverse effects on the components and / or the processed objects, and the operator needs to manually adjust to solve the problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0016] Figure 2 yes Figure 1 The schematic diagram of the embodiment shown is a schematic diagram in which all first adjustment devices, all second adjustment devices, and all third adjustment devices are removed;

[0017] Figure 3 yes Figure 1 An enlarged right view of the first adjusting device and the longitudinal heat sealing unit of the illustrated embodiment;

[0018] Figure 4 yes Figure 1 An enlarged right side view of the second adjusting device of the illustrated embodiment;

[0019] Figure 5 yes Figure 1 An enlarged right side view of the third adjusting device of the illustrated embodiment;

[0020] Figure 6 yes Figure 1 Schematic diagram of the structure with the support frame removed;

[0021] Figure 7 yes Figure 2 Schematic diagram of removing the support frame, all first slidable bearing seats, all second slidable bearing seats, and all third slidable bearing seats. DETAILED DESCRIPTION

[0022] like Figure 1-7As shown, the edge sealing mechanism of the folding and breaking bag packaging machine in one embodiment of the present application includes a support frame 1 and a longitudinal heat sealing unit 2, a longitudinal cold sealing unit 3 and a transverse heat sealing unit 4 respectively installed on the support frame 1 and distributed in sequence from top to bottom, the longitudinal heat sealing unit 2 includes a first longitudinal heat sealing roller structure 201 and a second longitudinal heat sealing roller structure 202, the longitudinal cold sealing unit 3 includes a first longitudinal cold sealing roller structure 301 and a second longitudinal cold sealing roller structure 302, and the transverse heat sealing unit 4 includes a support roller structure 401 and a transverse heat sealing roller structure 402, the support frame 1 is provided with two first positioning grooves 101 with first lateral openings, and the two first positioning grooves 101 are respectively provided with a first side opening and a second side opening. A first slidable bearing seat 102 is provided which can slide along the first positioning groove 101. Both ends of the first longitudinal heat sealing roller structure 201 of the longitudinal heat sealing unit 2 are rotatably mounted on the support frame 1. Both ends of the second longitudinal heat sealing roller structure 202 are respectively arranged in the two first slidable bearing seats 102. The first lateral opening of each first positioning groove 101 is provided with a first adjusting device 103. The first adjusting device 103 has a first action end, which applies pressure to the first slidable bearing seat 102 to restrict the first slidable bearing seat 102 in the first positioning groove 101. The support frame 1 has two second positioning grooves 101 with second lateral openings. 04, the two second positioning grooves 104 are respectively provided with second slidable bearing seats 105 that can slide along the second positioning grooves 104, the two ends of the first longitudinal cold sealing roller structure 301 of the longitudinal cold sealing unit 3 are rotatably installed on the support frame 1, and the two ends of the second longitudinal cold sealing roller structure 302 are respectively arranged in the two second slidable bearing seats 105, and the second lateral opening of each second positioning groove 104 is installed with a second adjusting device 106, and the second adjusting device 106 has a second action end, which applies pressure to the second slidable bearing seat 105 to limit the second slidable bearing seat 105 in the second positioning groove 104; the support frame 1 has two openings A third positioning groove 107 with a third lateral opening, and a third slidable bearing seat 108 that can slide along the third positioning groove 107 is respectively arranged in the two third positioning grooves 107. Both ends of the support roller structure 401 of the transverse heat sealing unit 4 are rotatably installed on the support frame 1, and both ends of the transverse heat sealing roller structure 402 are respectively arranged in the two third slidable bearing seats 108. The third lateral opening of each third positioning groove 107 is installed with a third adjusting device 109. The third adjusting device 109 has a third action end, which applies pressure to the third slidable bearing seat 108 to limit the third slidable bearing seat 108 in the third positioning groove 107.

[0023] The first adjusting device 103 is a pneumatic elastic adjusting device or a screw adjusting device; the second adjusting device 106 is a pneumatic elastic adjusting device or a screw adjusting device; and the third adjusting device 109 is a pneumatic elastic adjusting device or a screw adjusting device.

[0024] In an optional embodiment of the present application, the first adjusting device 103 is a pneumatic elastic adjusting device; the second adjusting device 106 is a pneumatic elastic adjusting device; and the third adjusting device 109 is a pneumatic elastic adjusting device.

[0025] In an optional embodiment of the present application, the first adjusting device 103 is a screw adjusting device; the second adjusting device 106 is a screw adjusting device; and the third adjusting device 109 is a screw adjusting device.

[0026] like Figure 1-7 As shown, in an optional embodiment of the present application, the first adjusting device 103 is a pneumatic elastic adjusting device; the second adjusting device 106 is a pneumatic elastic adjusting device; and the third adjusting device 109 is a screw adjusting device.

[0027] like Figure 3 As shown, an optional embodiment of the present application, the first adjustment device 103 includes a first adjustment seat 1031 and a first adjustment push block 1032. The first adjustment seat 1031 has a first piston cavity 10311, a first outer side wall 10312, and a first inner side wall 10313. The first outer side wall 10312 of the first adjustment seat 1031 is installed with a first high-pressure gas inlet and outlet nozzle 1033 connected to an external high-pressure gas source, and a first piston 1034 is installed in the first piston cavity 10311. The first inner side wall 10313 of the first adjustment seat 1031 has a first through hole, and the first adjustment push block 1032 is installed on the first through hole, and the first adjustment push block 1032 is connected to the first piston 1034. The first action end of the first adjustment device 103 is the first adjustment push block 1032. The second adjusting device 106 includes a second adjusting seat 1061 and a second adjusting push block 1062. The second adjusting seat 1061 has a second piston cavity 10611, a second outer side wall 10612, and a second inner side wall 10613. The second outer side wall 10612 of the second adjusting seat 1061 is installed with a second high-pressure gas inlet and outlet nozzle 1063 connected to an external high-pressure gas source. A second piston 1064 is installed in the second piston cavity 10611. The second inner side wall 10613 of the second adjusting seat 1061 is provided with a second through hole. The second adjusting push block 1062 is installed on the second through hole, and the second adjusting push block 1062 is connected to the second piston 1064. The second action end of the second adjusting device 106 is the second adjusting push block 1062. In this embodiment, the first adjusting seat 1031 is installed on the support frame 1, and the second adjusting seat 1061 is installed on the support frame 1.

[0028] like Figure 1-7As shown, in an optional embodiment of the present application, the third adjustment device 109 includes a mounting seat 1091 and a bolt 1092. A screw hole 10911 is formed between the inner wall and the outer wall of the mounting seat 1091. The bolt 1092 is threadedly connected to the screw hole 10911, and the working end of the bolt 1092 passes through the screw hole 10911 and extends to the outer side of the inner wall of the mounting seat 1091. The third action end of the third adjustment device 109 is the bolt 1092. In this embodiment, the mounting seat 1091 is mounted on the support frame 1.

[0029] like Figure 5 As shown, an optional embodiment of the present application, the third adjustment device 109 also includes two elastic positioning units 1093, which are respectively arranged on both sides of the third slidable bearing seat 108, and the elastic positioning units 1093 are composed of multiple disc spring washers. The elastic positioning unit 1093 on one side is sleeved on the bolt 1092, and the two ends of the elastic positioning unit 1093 on the other side respectively abut against the third slidable bearing seat 108 and the support roller structure 401 (in this embodiment, the same end of the support roller structure 401 is also installed in a circular bearing seat, so the two ends of the elastic positioning unit 1093 respectively abut against the third slidable bearing seat 108 and the circular bearing seat).

[0030] like Figure 7 As shown, an optional embodiment of the present application, the first longitudinal heat-sealing roller structure 201 includes a first rotating shaft 2011 and a plurality of first longitudinal heat-sealing wheels 2012, both ends of the first rotating shaft 2011 are rotatably mounted on the support frame 1, and all the first longitudinal heat-sealing wheels 2012 are respectively mounted on the first rotating shaft 2011; the second longitudinal heat-sealing roller structure 202 includes a second rotating shaft 2021 and a plurality of second longitudinal heat-sealing wheels 2022, both ends of the second rotating shaft 2021 are respectively arranged in two first slidable bearing seats 102, and all the second longitudinal heat-sealing wheels 2022 are respectively mounted on the second rotating shaft 2021, and the number of the second longitudinal heat-sealing wheels 2022 and the first longitudinal heat-sealing wheels 2012 are the same, correspond one to one, and cooperate with each other.

[0031] like Figure 1 , 2 As shown, an optional embodiment of the present application, the first positioning groove 101 is C-shaped and has two mutually parallel first groove edges 1011, the top and bottom of the first slidable bearing seat 102 are respectively provided with first sliding grooves 1021 which can be sleeved on the two first groove edges 1011 of the first positioning groove 101, and the two first sliding grooves 1021 can be slidably sleeved on the two first groove edges 1011 of the first positioning groove 101.

[0032] like Figure 7As shown, an optional embodiment of the present application, the first longitudinal cold sealing roller structure 301 includes a third rotating shaft 3011 and a plurality of first longitudinal cold sealing wheels 3012, both ends of the third rotating shaft 3011 are rotatably mounted on the support frame 1, and all the first longitudinal cold sealing wheels 3012 are respectively mounted on the third rotating shaft 3011; the second longitudinal cold sealing roller structure 302 includes a fourth rotating shaft 3021 and a plurality of second longitudinal cold sealing wheels 3022, both ends of the fourth rotating shaft 3021 are respectively arranged in two second slidable bearing seats 105, all the second longitudinal cold sealing wheels 3022 are respectively mounted on the fourth rotating shaft 3021, and the number of the second longitudinal cold sealing wheels 3022 and the first longitudinal cold sealing wheels 3012 are the same and correspond one to one and cooperate with each other.

[0033] like Figure 1 , 2 As shown, an optional embodiment of the present application, the second positioning groove 104 is C-shaped and has two second groove edges 1041 parallel to each other, the top and bottom of the second slidable bearing seat 105 are respectively provided with second sliding grooves 1051 that can be sleeved on the two second groove edges 1041 of the second positioning groove 104, and the two second sliding grooves 1051 can be slidably sleeved on the two second groove edges 1041 of the second positioning groove 104 respectively.

[0034] like Figure 1 As shown, an optional embodiment of the present application, the edge sealing mechanism also includes a longitudinal edge sealing drive unit 5, the longitudinal edge sealing drive unit 5 includes a first servo motor 501 and a first gear set 502, the first gear set 502 includes five first transmission gears 5021, the five first transmission gears 5021 are respectively installed on the first output shaft of the first servo motor 501, the first rotating shaft 2011, the second rotating shaft 2021, the third rotating shaft 3011, and the fourth rotating shaft 3021, the first servo motor 501 drives the first output shaft, the first rotating shaft 2011, the second rotating shaft 2021, the third rotating shaft 3011, and the fourth rotating shaft 3021 to rotate through the first gear set 502.

[0035] like Figure 7 As shown, an optional embodiment of the present application, the support roller structure 401 includes a fifth rotating shaft 4011 and a support roller body 4012, and both ends of the fifth rotating shaft 4011 are rotatably mounted on the support frame 1; the transverse heat sealing roller structure 402 includes a sixth rotating shaft 4021 and a transverse heat sealing roller body 4022, and both ends of the sixth rotating shaft 4021 are respectively arranged in two third slidable bearing seats 108, and the transverse heat sealing roller body 4022 is installed on the fourth rotating shaft 3021, and the transverse heat sealing roller body 4022 corresponds to the support roller body 4012 and cooperates with each other.

[0036] like Figure 1 , 2As shown, an optional embodiment of the present application, the third positioning groove 107 is C-shaped and has two third groove edges 1071 parallel to each other, and the top and bottom of the third slidable bearing seat 108 are respectively provided with third sliding grooves 1081 which can be sleeved on the two third groove edges 1071 of the third positioning groove 107, and the two third sliding grooves 1081 can be slidably sleeved on the two third groove edges 1071 of the third positioning groove 107.

[0037] like Figure 1 As shown, an optional embodiment of the present application, the edge sealing mechanism also includes a transverse edge sealing drive unit 6, the transverse edge sealing drive unit 6 includes a second servo motor 601 and a second gear set 602, the second gear set 602 includes three second transmission gears 6021, the three second transmission gears 6021 are respectively installed on the second output shaft of the second servo motor 601, the fifth rotating shaft 4011, and the sixth rotating shaft 4021, the second servo motor 601 drives the fifth rotating shaft 4011 and the sixth rotating shaft 4021 to rotate through the second gear set 602.

[0038] Combine the following Figure 1-7 Introduce the working process:

[0039] After the two films 7 forming the folded bag are closed (during the closing process, the filling heads 801 of the filling mechanism 8 continuously fill the material into the gap between the two), they are transported from top to bottom, and the longitudinal heat sealing unit 2, the longitudinal cold sealing unit 3 and the transverse heat sealing unit 4 sequentially perform longitudinal heat sealing, longitudinal cold sealing and transverse heat sealing on the two closed films 7.

[0040] The operator of the manufacturer can adjust the longitudinal heat sealing unit 2, the longitudinal cold sealing unit 3 and the transverse heat sealing unit 4 according to the quality of the finished folded bag (containing the material).

[0041] In this embodiment, high-pressure gas is input or discharged into the first adjustment seat 1031 through the first high-pressure gas inlet and outlet nozzle 1033, forcing the first piston 1034 to move in the first piston chamber 10311, thereby increasing or decreasing the thrust of the first adjustment push block 1032 on the corresponding first slidable bearing seat 102, thereby adjusting the pressure between the first longitudinal heat sealing roller structure 201 and the second longitudinal heat sealing roller structure 202 of the longitudinal heat sealing unit 2; similarly, the pressure between the first longitudinal cold sealing roller structure 301 and the second longitudinal cold sealing roller structure 302 of the longitudinal cold sealing unit 3 is adjusted by the delivered high-pressure gas; and the pressure between the support roller structure 401 and the transverse heat sealing roller structure 402 of the transverse heat sealing unit 4 is adjusted by rotating the bolt 1092.

[0042] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. An edge sealing mechanism of a folding bag packaging machine, comprising a support frame, and a longitudinal heat sealing unit, a longitudinal cold sealing unit and a transverse heat sealing unit respectively mounted on the support frame and arranged in sequence from top to bottom, the longitudinal heat sealing unit comprising a first longitudinal heat sealing roller structure and a second longitudinal heat sealing roller structure, the longitudinal cold sealing unit comprising a first longitudinal cold sealing roller structure and a second longitudinal cold sealing roller structure, and the transverse heat sealing unit comprising a support roller structure and a transverse heat sealing roller structure, characterized in that: The support frame has two first positioning grooves with first lateral openings, and the two first positioning grooves are respectively provided with first slidable bearing seats that can slide along the first positioning grooves. The two ends of the first longitudinal heat sealing roller structure of the longitudinal heat sealing unit are rotatably mounted on the support frame, and the two ends of the second longitudinal heat sealing roller structure are respectively arranged in the two first slidable bearing seats. The first lateral opening of each first positioning groove is installed with a first adjusting device, and the first adjusting device has a first action end. The first action end applies pressure to the first slidable bearing seat to limit the first slidable bearing seat in the first positioning groove; the support frame has two second positioning grooves with second lateral openings, and the two second positioning grooves are respectively provided with second slidable bearing seats that can slide along the second positioning grooves. The two ends of the first longitudinal cold sealing roller structure of the longitudinal cold sealing unit are rotatably mounted on the support frame. The two ends of the roller structure are respectively arranged in two second slidable bearing seats, and the second lateral opening of each second positioning groove is installed with a second adjusting device, and the second adjusting device has a second action end, and the second action end applies pressure to the second slidable bearing seat to limit the second slidable bearing seat in the second positioning groove; the support frame is provided with two third positioning grooves with third lateral openings, and the two third positioning grooves are respectively provided with third slidable bearing seats that can slide along the third positioning grooves, and the two ends of the support roller structure of the transverse heat sealing unit are rotatably installed on the support frame, and the two ends of the transverse heat sealing roller structure are respectively arranged in two third slidable bearing seats, and the third lateral opening of each third positioning groove is installed with a third adjusting device, and the third adjusting device has a third action end, and the third action end applies pressure to the third slidable bearing seat to limit the third slidable bearing seat in the third positioning groove.

2. The edge sealing mechanism of the folding bag packaging machine according to claim 1, characterized in that: The first adjusting device is a pneumatic elastic adjusting device or a screw adjusting device; the second adjusting device is a pneumatic elastic adjusting device or a screw adjusting device; the third adjusting device is a pneumatic elastic adjusting device or a screw adjusting device.

3. The edge sealing mechanism of the folding bag packaging machine according to claim 2, characterized in that: The pneumatic elasticity adjustment device includes an adjustment seat and an adjustment push block. The adjustment seat has a piston cavity, an outer wall, and an inner wall. The outer wall of the adjustment seat is equipped with a high-pressure gas inlet and outlet nozzle connected to an external high-pressure gas source. A piston is installed in the piston cavity. The inner wall of the adjustment seat is provided with a through hole. The adjustment push block is installed on the through hole, and the adjustment push block is connected to the piston.

4. The edge sealing mechanism of the folding bag packaging machine according to claim 2 or 3, characterized in that: The screw adjustment device comprises a mounting seat and a bolt. A screw hole is opened between the inner wall and the outer wall of the mounting seat. The bolt is threadedly connected to the screw hole and the working end of the bolt passes through the screw hole and extends to the outer side of the inner wall of the mounting seat.

5. The edge sealing mechanism of the folding bag packaging machine according to claim 1, characterized in that: The first positioning groove is C-shaped and has two first groove edges parallel to each other. The top and bottom of the first slidable bearing seat are respectively provided with first sliding grooves that can be sleeved on the two first groove edges of the first positioning groove, and the two first sliding grooves can be slidably sleeved on the two first groove edges of the first positioning groove respectively; the second positioning groove is C-shaped and has two second groove edges parallel to each other. The top and bottom of the second slidable bearing seat are respectively provided with second sliding grooves that can be sleeved on the two second groove edges of the second positioning groove, and the two second sliding grooves can be slidably sleeved on the two second groove edges of the second positioning groove respectively; the third positioning groove is C-shaped and has two third groove edges parallel to each other. The top and bottom of the third slidable bearing seat are respectively provided with third sliding grooves that can be sleeved on the two third groove edges of the third positioning groove, and the two third sliding grooves can be slidably sleeved on the two third groove edges of the third positioning groove respectively.

6. The edge sealing mechanism of the folding bag packaging machine according to claim 1, characterized in that: The first longitudinal heat-sealing roller structure comprises a first rotating shaft and a plurality of first longitudinal heat-sealing wheels, both ends of the first rotating shaft are rotatably mounted on a support frame, and all the first longitudinal heat-sealing wheels are mounted on the first rotating shaft; the second longitudinal heat-sealing roller structure comprises a second rotating shaft and a plurality of second longitudinal heat-sealing wheels, both ends of the second rotating shaft are arranged in two first slidable bearing seats, and all the second longitudinal heat-sealing wheels are mounted on the second rotating shaft, and the number of the second longitudinal heat-sealing wheels is the same as that of the first longitudinal heat-sealing wheels, and they correspond one to one and cooperate with each other.

7. The edge sealing mechanism of the folding bag packaging machine according to claim 6, characterized in that: The first longitudinal cold sealing roller structure includes a third rotating shaft and multiple first longitudinal cold sealing wheels, both ends of the third rotating shaft are rotatably mounted on the support frame, and all the first longitudinal cold sealing wheels are respectively mounted on the third rotating shaft; the second longitudinal cold sealing roller structure includes a fourth rotating shaft and multiple second longitudinal cold sealing wheels, both ends of the fourth rotating shaft are respectively arranged in two second slidable bearing seats, and all the second longitudinal cold sealing wheels are respectively mounted on the fourth rotating shaft, and the number of the second longitudinal cold sealing wheels and the first longitudinal cold sealing wheels is the same and corresponds one to one and cooperates with each other.

8. The edge sealing mechanism of the folding bag packaging machine according to claim 7, characterized in that: The edge banding mechanism also includes a longitudinal edge banding drive unit, which includes a first servo motor and a first gear group. The first gear group includes five first transmission gears, and the five first transmission gears are respectively installed on the first output shaft, the first rotating shaft, the second rotating shaft, the third rotating shaft, and the fourth rotating shaft of the first servo motor. The first servo motor drives the first output shaft, the first rotating shaft, the second rotating shaft, the third rotating shaft, and the fourth rotating shaft to rotate through the first gear group.

9. The edge sealing mechanism of the folding bag packaging machine according to claim 1, characterized in that: The supporting roller structure comprises a fifth rotating shaft and a supporting roller body, and both ends of the fifth rotating shaft are rotatably mounted on the supporting frame; the transverse heat sealing roller structure comprises a sixth rotating shaft and a transverse heat sealing roller body, and both ends of the sixth rotating shaft are respectively arranged in two third slidable bearing seats, and the transverse heat sealing roller body is mounted on the fourth rotating shaft, and the transverse heat sealing roller body corresponds to and cooperates with the supporting roller body.

10. The edge sealing mechanism of the folding bag packaging machine according to claim 9, characterized in that: The edge banding mechanism also includes a transverse edge banding drive unit, which includes a second servo motor and a second gear group. The second gear group includes three second transmission gears, and the three second transmission gears are respectively installed on the second output shaft, the fifth rotating shaft, and the sixth rotating shaft of the second servo motor. The second servo motor drives the fifth rotating shaft and the sixth rotating shaft to rotate through the second gear group.

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