Bag body sealing and cutting device of packaging machine

Abstract

The utility model relates to a bag body sealing and cutting-off device of a packaging machine, a sealing and cutting-off mechanism on a support comprises an upper sealing component, a lower sealing component and a bag breaking cutter which are paired, a corner inserting mechanism on the support comprises a front corner inserting part and a rear corner inserting part, the front corner inserting part comprises a left front corner inserting component and a right front corner inserting component which are paired, and the rear corner inserting part comprises a left front corner inserting component and a right front corner inserting component which are paired. The rear gusset part comprises a left rear gusset part and a right rear gusset part which are paired, the front gusset part is arranged on the front side of the sealing and cutting mechanism, and the rear gusset part is arranged on the rear side of the sealing and cutting mechanism. The corner inserting mechanism can be matched with the front side and the rear side of the sealing and cutting-off mechanism to be inserted into materials in the middle position, so that the left side and the right side of the separation position of a bag body, not sealed and cut off, of the cylindrical wrapping object can be inserted to form inwards-concave folded corners, and therefore when the upper sealing component and the lower sealing component close to the side edges to be sealed, the bag body can be sealed. And the left-right expansion of the separation parts of the bag bodies is avoided.

Description

Technical Field

[0001] This utility model relates to a bag sealing and cutting device for a packaging machine. Background Technology

[0002] In the packaging process of materials (such as multi-sheet wet wipes), packaging machines (such as wet wipe pillow packaging machines) can use continuous roll materials (such as continuous roll film) to make bags, and finally form individual bags containing the materials. For example, when packaging wet wipe pillow packaging machines, the bags are in a horizontal state. The upper side of the bag has a center seal, and the front and rear ends have side seals. The side seal positions at the front and rear ends are cut to form separate independent bags. When sealing the front and rear ends, the upper and lower sealing components can close (clamp) the material. When the material is relatively thick (such as multi-sheet wet wipes), the upper and lower sealing components directly close (clamp) the material, which flattens the side seal position of the bag and also causes the side seal position of the bag to bulge, making the shape of the bag unsightly, resulting in irregular left and right sides of the bag and insufficient tightness of the bag. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a bag sealing and cutting device for a packaging machine that makes the bag less likely to expand during side sealing and makes the bag body relatively more regular.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a bag sealing and cutting device for a packaging machine, including a bracket, a sealing and cutting mechanism provided on the bracket, the sealing and cutting mechanism including a paired upper sealing component and a lower sealing component, the sealing and cutting mechanism also including a bag cutting knife, characterized in that: the bracket is also provided with a corner insertion mechanism, the corner insertion mechanism including a front corner insertion part and a rear corner insertion part, the front corner insertion part including a paired left front corner insertion component and a right front corner insertion component, the rear corner insertion part including a paired left rear corner insertion component and a right rear corner insertion component, the front corner insertion part is disposed on the front side of the sealing and cutting mechanism, and the rear corner insertion part is disposed on the rear side of the sealing and cutting mechanism.

[0005] The following optimizations or supplementary explanations can be made to the above technical solutions.

[0006] For example, the left front insertion corner component and the right front insertion corner component are moved left and right on the bracket respectively, and the left rear insertion corner component and the right rear insertion corner component are moved left and right on the bracket respectively; the left front insertion corner component and the right front insertion corner component are paired left and right and are aligned and centered together and separated respectively, and the left rear insertion corner component and the right rear insertion corner component are paired left and right and are aligned and centered together and separated respectively.

[0007] For example, the corner insertion mechanism also includes a left transverse sliding seat and a right transverse sliding seat, which are connected to the bracket. The left front corner insertion component and the left rear corner insertion component are located on the left transverse sliding seat, which is equipped with a left transverse driving device; the right front corner insertion component and the right rear corner insertion component are located on the right transverse sliding seat, which is equipped with a right transverse driving device.

[0008] In addition, the sealing and cutting mechanism is equipped with a front feeding belt and a rear feeding belt, which are connected and coordinated for conveying.

[0009] The support frame is also equipped with a longitudinal moving frame, a sealing and cutting mechanism and an inserting mechanism connected to the longitudinal moving frame; the output end of the conveying surface of the front feeding belt is set to move longitudinally back and forth, and the input end of the conveying surface of the rear feeding belt is set to move longitudinally back and forth; the conveying surface of the front feeding belt is higher than the conveying surface of the rear feeding belt.

[0010] The bracket has an upper lifting seat and a lower lifting seat. The upper sealing component is connected to the upper lifting seat, and the lower sealing component is connected to the lower lifting seat. The upper sealing component and the lower sealing component are heat-sealing blocks. The left front insertion corner component, the right front insertion corner component, the left rear insertion corner component, and the right rear insertion corner component are pointed insertion corner pieces. The upper sealing component is also provided with a knife groove for the bag-breaking cutter to pass through vertically. The bag-breaking cutter is connected to the upper lifting seat through a lifting and cutting drive component. The lower sealing component is also provided with a clearance knife groove for the bag-breaking cutter to extend into the cutting area.

[0011] In addition, the upper sealing component is set on the mounting plate, a buffer spring is provided between the mounting plate and the upper lifting seat, and a lifting guide structure is also provided between the mounting plate and the upper lifting seat. The lifting and cutting drive component is installed on the upper lifting seat through the lifting adjustment frame. The front and / or rear sides of the upper lifting seat of the bracket are also equipped with a pressure component with buffer function, and the pressure component is connected to the upper lifting seat.

[0012] Its transmission structure can also be optimized. The bracket is equipped with a longitudinal guide rail, and a longitudinal frame is configured on the longitudinal guide rail. The longitudinal frame is connected to a vertical guide rail, and the vertical guide rail is connected to an upper lifting seat and a lower lifting seat. The upper sealing component and the bag-breaking cutter are installed and connected to the upper lifting seat, and the lower sealing component is installed and connected to the lower lifting seat. The upper lifting seat is equipped with an upper eccentric wheel that drives its longitudinal movement and lifting. The upper eccentric wheel has a first rotating shaft that is relatively eccentrically set. The first rotating shaft is driven by the upper lifting seat. The lower lifting seat is equipped with a lower eccentric wheel that drives its longitudinal movement and lifting. The lower eccentric wheel has a second rotating shaft that is relatively eccentrically set. The second rotating shaft is driven by the lower lifting seat. The upper eccentric wheel and the lower eccentric wheel are driven by each other.

[0013] In addition, the upper eccentric wheel is connected to an upper gear, and the lower eccentric wheel is connected to a lower gear. The upper gear and the lower gear mesh with each other and are set to rotate at the same speed. The front feed belt, which is located on the front side of the sealing and cutting mechanism, is equipped with a first longitudinal movable support frame. The first longitudinal movable support frame is equipped with a first transmission roller group. The first transmission roller group includes an output transmission roller located at the output end of the front feed belt. The front feed belt is wound around the first transmission roller group. The rear feed belt, which is located on the rear side of the sealing and cutting mechanism, is equipped with a second longitudinal movable support frame. The second longitudinal movable support frame is equipped with a second transmission roller group. The second transmission roller group includes an input transmission roller located at the input end of the rear feed belt. The rear feed belt is wound around the second transmission roller group.

[0014] It is even possible to adopt a linkage structure, with the longitudinal moving frame connected to a front linkage longitudinal moving transmission component and a rear linkage longitudinal moving transmission component. The front linkage longitudinal moving transmission component is drivingly connected to the first longitudinal moving movable bracket, and the rear linkage longitudinal moving transmission component is drivingly connected to the second longitudinal moving movable bracket. The front linkage longitudinal moving transmission component and the rear linkage longitudinal moving transmission component are connected to the lower lifting seat. The first longitudinal moving movable bracket is provided with a first guide plate, which has a first longitudinal moving guide groove. The front linkage longitudinal moving transmission component includes a first guide member, which is disposed on the first longitudinal moving guide groove. The second longitudinal moving movable bracket is provided with a second guide plate, which has a second longitudinal moving guide groove. The rear linkage longitudinal moving transmission component includes a second guide member, which is disposed on the second longitudinal moving guide groove.

[0015] The beneficial effect of this utility model is that in the bag sealing and cutting device of the packaging machine, the corner insertion mechanism can cooperate with the front and rear sides of the sealing and cutting mechanism to insert into the material in the middle position (i.e., the bag body that is not sealed on the side), so that the left and right sides of the unsealed and cut bag body of the tubular packaged object (such as wet wipes) can be inserted to form concave corners. This prevents the bag body from expanding to the left and right at the separation point (i.e., the side sealing position) when the upper sealing component and the lower sealing component come together to seal the side. After the side sealing, the side sealing position between the bag body and the bag body is regular, and the bag body is regular and tight as a whole. Attached Figure Description

[0016] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0017] Figure 1 This is a three-dimensional structural diagram of the packaging machine of this utility model.

[0018] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure from another angle.

[0019] Figure 3 This is a three-dimensional structural diagram of the bag sealing and cutting device of the packaging machine of this utility model.

[0020] Figure 4 for Figure 3 A schematic diagram showing the hidden part of the structure.

[0021] Figure 5 for Figure 4 A schematic diagram showing the hidden part of the structure.

[0022] Figure 6 This is a three-dimensional structural diagram of the bag sealing and cutting device of the packaging machine of this utility model from another angle.

[0023] Figure 7 for Figure 6 A schematic diagram showing the hidden part of the structure.

[0024] Figure 8 for Figure 7 A schematic diagram showing the hidden part of the structure.

[0025] In the picture:

[0026] 1. Support frame; 10. Longitudinal transfer frame; 11. Upper lifting seat; 12. Lower lifting seat; 13. Pressing component; 14. Longitudinal transfer guide rail; 15. Vertical guide rail;

[0027] 2. Sealing and cutting mechanism; 20. Bag cutting knife; 21. Upper sealing component; 22. Lower sealing component; 23. Knife groove; 24. Alternating knife groove; 25. Mounting plate; 28. Lifting and adjusting frame; 29. ​​Lifting and cutting drive component;

[0028] 3. Angle insertion mechanism; 31. Front angle insertion section; 32. Rear angle insertion section; 33. Left transverse sliding seat; 34. Right transverse sliding seat; 35. Left transverse sliding drive device; 36. Right transverse sliding drive device;

[0029] 311. Left front corner component; 312. Right front corner component;

[0030] 321. Left rear corner component; 322. Right rear corner component;

[0031] 5. Front feed belt; 50. First longitudinal moving bracket; 51. First drive roller group; 52. Output drive roller;

[0032] 6. Rear feed belt; 60. Second longitudinal moving bracket; 61. Second drive roller group; 62. Input drive roller;

[0033] 70. Synchronous shaft; 71. Upper eccentric wheel; 72. Lower eccentric wheel; 73. First rotating shaft; 74. Second rotating shaft; 77. Drive motor; 78. Upper gear; 79. Lower gear;

[0034] 81. Front linkage longitudinal transmission component; 82. Rear linkage longitudinal transmission component; 83. First guide plate; 84. First longitudinal guide groove; 85. First guide member; 86. Second guide plate; 87. Second longitudinal guide groove; 88. Second guide member. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0036] Referring to the accompanying drawings, the bag sealing and cutting device of the packaging machine in this embodiment includes a support 1, on which a sealing and cutting mechanism 2 is provided. The sealing and cutting mechanism 2 includes a paired upper sealing component 21 and a lower sealing component 22. That is, the upper sealing component 21 and the lower sealing component 22 cooperate with each other to achieve side sealing of the front and rear ends of the bag. In addition, the sealing and cutting mechanism 2 also includes a bag cutting knife 20, which cooperates to cut the side of the bag after the front and rear ends of the bag are sealed, forming individual bags in sequence. This is a mature technology.

[0037] In this embodiment, further optimization is made. An insertion corner mechanism 3 is also provided on the bracket 1. The insertion corner mechanism 3 includes a front insertion corner portion 31 and a rear insertion corner portion 32. The front insertion corner portion 31 includes a paired left front insertion corner component 311 and a right front insertion corner component 312. The rear insertion corner portion 32 includes a paired left rear insertion corner component 321 and a right rear insertion corner component 322. The front insertion corner portion 31 is disposed on the front side of the sealing and cutting mechanism 2, and the rear insertion corner portion 32 is disposed on the rear side of the sealing and cutting mechanism 2.

[0038] Its working principle is as follows: In a pillow-type packaging machine, when the unsealed and cut bag of a cylindrical packaged object (such as wet wipes) is conveyed and stops in the bag sealing and cutting device, the separation between the front and rear bags is located between the upper sealing component 21 and the lower sealing component 22; at this time, the corner insertion mechanism 3 inserts the corners on the left and right sides of the separation position between the front and rear bags, forming concave folds on the left and right sides of the unsealed and cut cylindrical bag to prevent it from expanding to the left and right. Then, the front and rear bags are sealed and cut in sequence at the separation position to form an independent bag; sealing and cutting can be performed while maintaining the insertion state to ensure that the folded angle remains unchanged for better results; the sealing and cutting position is located between the front corner insertion part 31 and the rear corner insertion part 32.

[0039] In the bag sealing and cutting device of the packaging machine, the corner insertion mechanism 3 can be inserted into the material in the middle position (i.e., the bag body that is not sealed on the side) in cooperation with the front and rear sides of the sealing and cutting mechanism 2, so that the left and right sides of the unsealed and cut bag body of the tubular packaged object (such as wet wipes) can be inserted to form concave corners. This prevents the bag body from puffing open on the left and right sides when the upper sealing component 21 and the lower sealing component 22 come together to seal the side. After the side is sealed, the side sealing positions between the bag bodies are regular, and the bag body is neat and tight as a whole.

[0040] Based on the above embodiments, the following optimizations or further explanations can be made.

[0041] For example, the left front insertion corner component 311 and the right front insertion corner component 312 are respectively moved left and right on the bracket 1, and the left rear insertion corner component 321 and the right rear insertion corner component 322 are respectively moved left and right on the bracket 1; the left front insertion corner component 311 and the right front insertion corner component 312 are paired left and right and are aligned and separated, and the left rear insertion corner component 321 and the right rear insertion corner component 322 are paired left and right and are aligned and separated. The left and right movement is used to coordinate the corresponding alignment and closing (i.e., insertion) and separation reset.

[0042] For example, the corner insertion mechanism 3 also includes a left transverse sliding seat 33 and a right transverse sliding seat 34. The left transverse sliding seat 33 and the right transverse sliding seat 34 are connected to the bracket 1 (and can even be equipped with corresponding guide rails for stable left and right transverse movement). The left front corner insertion component 311 and the left rear corner insertion component 321 are connected to the left transverse sliding seat 33 and can be installed by connecting with corresponding vertical rods. They can move laterally (i.e., move left and right) together with the left transverse sliding seat 33. The left transverse sliding seat 33 is equipped with a left transverse driving device 3. 5 (e.g., including cylinders), the left transverse drive device 35 drives the left transverse seat 33 to move laterally (left and right); the right front insertion corner component 312 and the right rear insertion corner component 322 are connected to the right transverse seat 34 and can be connected and installed through corresponding vertical rods, so that they can move laterally (left and right) together with the right transverse seat 34. The right transverse seat 34 is equipped with a right transverse drive device 36 (e.g., including cylinders), which drives the right transverse seat 34 to move laterally (left and right).

[0043] To facilitate input and output, a front feeding belt 5 and a rear feeding belt 6 are respectively provided before and after the sealing and cutting mechanism 2. The front feeding belt 5 and the rear feeding belt 6 are connected and connected to convey materials. The front feeding belt 5 and the rear feeding belt 6 are used to cooperate in inputting and outputting materials, and to feed materials through the sealing and cutting mechanism 2 and stop at the sealing and cutting mechanism 2 to perform corresponding sealing and cutting.

[0044] In addition, the support frame 1 is also equipped with a longitudinal moving frame 10, which can move longitudinally back and forth accordingly. The sealing and cutting mechanism 2 and the corner insertion mechanism 3 are connected to the longitudinal moving frame 10. That is, the sealing and cutting mechanism 2 (such as its upper sealing component 21, lower sealing component 22, bag cutting knife 20, etc.) and the corner insertion mechanism 3 (such as its front corner insertion part 31 and rear corner insertion part 32, etc.) can move longitudinally together with the longitudinal moving frame 10. Furthermore, the output end of the conveying surface of the front feeding belt 5 is set to move longitudinally back and forth, and its output end can move relatively back and forth (such as telescopic movement). The input end of the conveying surface of the rear feeding belt 6 is set to move longitudinally back and forth, and its input end can move relatively back and forth (such as telescopic movement). With the longitudinal moving frame 10 and other structures on it moving together, the longitudinal movement is stable, and the material input and output and sealing and cutting can be efficiently coordinated, resulting in higher efficiency. It can even be optimized so that the conveying surface of the front feeding belt 5 is higher than the conveying surface of the rear feeding belt 6, which facilitates the connection of material conveying.

[0045] For example, the bracket 1 has an upper lifting seat 11 and a lower lifting seat 12. The upper sealing component 21 is connected to the upper lifting seat 11, and the lower sealing component 22 is connected to the lower lifting seat 12. When the upper lifting seat 11 and the lower lifting seat 12 lift and move up and down respectively, they can drive the upper sealing component 21 and the lower sealing component 22 to move up and down together.

[0046] For example, the upper sealing component 21 is also provided with a through groove 23, through groove 23 for the bag-breaking cutter 20 to pass through vertically, so that the bag-breaking cutter 20 can move up and down to cut the material and form an independent bag body, which is relatively compact. The bag-breaking cutter 20 is connected to the upper lifting seat 11 through a lifting and cutting drive component 29 (such as a cylinder). The lifting and cutting drive component 29 drives the bag-breaking cutter 20 to move up and down on the upper lifting seat 11, descending to cut the material and rising to reset. The lower sealing component 22 is also provided with a relief groove 24 for the bag-breaking cutter 20 to extend into and cut the material. During the process of the upper sealing component 21 and the lower sealing component 22 closing and clamping the sealing, the relief groove 24 can also allow the bag-breaking cutter 20 to descend smoothly to ensure stable cutting of the material and is not easily damaged.

[0047] Further optimization involves mounting the upper sealing component 21 on the mounting plate 25. A buffer spring is provided between the mounting plate 25 and the upper lifting seat 11, and a lifting guide structure (such as a guide rod and guide sleeve) is also provided between the mounting plate 25 and the upper lifting seat 11, ensuring stable operation. The buffer spring can be sleeved on the guide rod and located between the mounting plate 25 and the upper lifting seat 11. The mounting plate 25 can be positioned below the upper lifting seat 11, and the upper sealing component 21 can be positioned below the mounting plate 25. When the upper sealing component 21 descends with the upper lifting seat 11 and closes downward (towards the lower sealing component 22), it has a buffering function and buffering effect, avoiding impact damage to components during closure, and also extending the pressure holding time (i.e., sealing time) during closure to ensure a firm seal. In addition, the lifting and cutting drive component 29 is mounted on the upper lifting seat 11 via the lifting adjustment frame 28, which can adjust the relative position of the bag-breaking cutter 20 at different heights of the lifting seat. A pressure component 13 with a buffer function can also be provided on the front and / or rear side of the upper lifting seat 11 of the bracket 1. This component can help to press the material and prevent displacement so as to ensure stable sealing and cutting. The pressure component 13 is connected to the upper lifting seat 11 and moves up and down together. The pressure component 13 can press the material onto the corresponding front feeding belt 5 and rear feeding belt 6. The buffer function can better adapt to the shape and size of the material. Spring buffer and / or sponge can be used as the body of the pressure component 13. The front feeding belt 5 and rear feeding belt 6 even have left and right side gauges (plates) to limit the left and right position of the material. The side gauges (plates) can even move left and right to align the material position.

[0048] For example, the upper sealing component 21 and the lower sealing component 22 respectively adopt heat-sealing blocks (such as electrically heated sealing blocks). For example, the left front insertion corner component 311, the right front insertion corner component 312, the left rear insertion corner component 321 and the right rear insertion corner component 322 respectively adopt pointed insertion corner pieces, such as triangular pointed (the head can be curved or rounded) insertion corner pieces, etc.

[0049] In addition, the support 1 is provided with a longitudinal guide rail 14, on which a longitudinal frame 10 is configured. This allows the longitudinal frame 10 (such as a longitudinally moving slide plate, which can have two pieces on the left and right sides) to move stably longitudinally on the longitudinal guide rail 14 of the support 1. The longitudinal frame 10 is connected to a vertical guide rail 15, which connects to an upper lifting seat 11 and a lower lifting seat 12. This allows the upper lifting seat 11 and the lower lifting seat 12 to move relatively stably along the vertical guide rail 15. The upper lifting seat 11 and the lower lifting seat 12 will also move longitudinally together with the longitudinal frame 10. The upper sealing component 21 and the bag cutting knife 20 are installed and connected to the upper lifting seat 11, and the lower sealing component 22 is installed and connected to the lower lifting seat 12, cooperating to perform corresponding lifting and longitudinal movement (i.e., forward and backward longitudinal movement). The corner insertion mechanism 3 can be connected to the longitudinal frame 10 through its left transverse seat 33 and right transverse seat 34 to perform corresponding transverse movement. The sealing and cutting mechanism 2 and the corner insertion mechanism 3 are connected to the longitudinal moving frame 10 and can move longitudinally in a stable manner. There are many ways to drive the longitudinal moving frame 10 to move longitudinally (i.e., back and forth) and for the upper lifting seat 11 and the lower lifting seat 12 to rise and fall independently. For example, they can be configured with their own corresponding power sources (such as motors or cylinders). In this embodiment, a more stable, efficient, and mechanically coordinated transmission drive structure is adopted. The upper lifting seat 11 is equipped with an upper eccentric wheel 71 that drives its longitudinal movement and lifting. The upper eccentric wheel 71 has a first rotating shaft 73 that is eccentrically positioned relative to the upper eccentric wheel 71. The first rotating shaft 73 is connected to the upper lifting seat 11. When the upper eccentric wheel 71 rotates, the first rotating shaft 73 drives the upper lifting seat 11 to lift along the vertical guide rail 15, and simultaneously drives the upper lifting seat 11 to move back and forth, causing the vertical guide rail 15 and the longitudinal shifting frame 10 to move longitudinally together. Similarly, the lower lifting seat 12 is equipped with a lower eccentric wheel 72 that drives its longitudinal movement and lifting. The lower eccentric wheel 72 has a second rotating shaft 74 that is eccentrically positioned relative to the lower eccentric wheel 72. Shaft 74, the second rotating shaft 74 is eccentrically set relative to the lower eccentric wheel 72. The second rotating shaft 74 is connected to the lower lifting seat 12. When the lower eccentric wheel 72 rotates, the second rotating shaft 74 drives the lower lifting seat 12 to move up and down along the vertical guide rail 15. At the same time, it also drives the lower lifting seat 12 to move back and forth, so that the vertical guide rail 15 and the longitudinal moving frame 10 move longitudinally together. The upper eccentric wheel 71 is connected to the lower eccentric wheel 72 and can be driven by the same power (such as by the same drive motor 77). The corresponding longitudinal moving frame 10, longitudinal moving guide rail 14, upper eccentric wheel 71, first rotating shaft 73, lower eccentric wheel 72 and second rotating shaft 74 can also be arranged on the left and right sides of the bracket 1, respectively, to cooperate with the upper lifting seat 11 and the lower lifting seat 12. The force on the left and right sides is more balanced and the operation is more stable. The drive motor 77 can drive the left and right side structures to run synchronously through the synchronous shaft 70.The entire bracket 1 can even be adjusted in height; for example, in the figure, the vertical guide rail 15 is fixed to the lower lifting seat 12, the vertical guide rail 15 is connected to the upper lifting seat 11 in a relatively vertical sliding fit, and the vertical guide rail 15 is connected to the longitudinal sliding seat in a relatively vertical sliding fit.

[0050] For example, the upper eccentric wheel 71 is connected to the upper gear 78, and the lower eccentric wheel 72 is connected to the lower gear 79, generally using a coaxial transmission connection. The upper gear 78 and the lower gear 79 mesh with each other and are set at synchronous speeds, which can drive the first rotating shaft 73 and the second rotating shaft 74 to rotate synchronously in both directions. The front feed belt 5, which is located on the front side of the sealing and cutting mechanism 2, is equipped with a first longitudinal movable support frame 50. The first longitudinal movable support frame 50 is equipped with a first transmission roller group 51. The first transmission roller group 51 includes an output transmission roller 52 located at the output end of the front feed belt 5. The front feed belt 5 is wound around the first transmission roller group 51. On the roller group 51, an output end telescopic structure (i.e., longitudinally movable arrangement) is formed at the front feed belt 5. The rear feed belt 6, which is located behind the sealing and cutting mechanism 2, is equipped with a second longitudinal movable support frame 60. The second longitudinal movable support frame 60 is equipped with a second transmission roller group 61. The second transmission roller group 61 includes an input transmission roller 62 located at the input end of the rear feed belt 6. The rear feed belt 6 is wound around the second transmission roller group 61 to form an input end telescopic structure (i.e., longitudinally movable arrangement) at the rear feed belt 6. That is, the front feed belt 5 and the rear feed belt 6 will be telescopic belts (or telescopic conveyor belts).

[0051] In addition, the longitudinal movement of the first longitudinal movable support frame 50 and the second longitudinal movable support frame 60 can be respectively equipped with corresponding power source transmission. Alternatively, the linkage method described in this embodiment can be used, resulting in more accurate operating positions. In this method, the longitudinal transfer frame 10 is connected to a front linkage longitudinal transfer transmission component 81 (e.g., including a front linkage rod and a front roller) and a rear linkage longitudinal transfer transmission component 82 (e.g., including a rear linkage rod and a rear roller). The front linkage longitudinal transfer transmission component 81 is connected to the first longitudinal transfer movable support frame 50, and the rear linkage longitudinal transfer transmission component 82 is connected to the second longitudinal transfer movable support frame 60. That is, when the longitudinal transfer frame 10 moves longitudinally, the front linkage longitudinal transfer transmission component 81 can drive the first longitudinal transfer movable support frame 50 to move longitudinally, which in turn drives the front feed belt 5 to extend and retract. The rear linkage longitudinal transfer transmission component 82 can also drive the second longitudinal transfer movable support frame 60 to move longitudinally, which in turn drives the rear feed belt 6 to extend and retract. Further optimization is possible by connecting the front linkage longitudinal transfer transmission component 81 and the rear linkage longitudinal transfer transmission component 82 to the lower lifting seat 12, i.e., they are connected via the lower lifting seat 12. The lowering seat 12 is connected to the longitudinal shifting frame 10. The first longitudinal shifting movable support frame 50 is provided with a first guide plate 83, and the first guide plate 83 has a first longitudinal shifting guide groove 84. The front linkage longitudinal shifting transmission component 81 includes a first guide member 85 (such as a front roller). The first guide member 85 is disposed on the first longitudinal shifting guide groove 84. That is, when the longitudinal shifting frame 10 (lower lifting seat 12) moves longitudinally, the first guide member 85 moves and cooperates with the longitudinal shifting frame 10 (lower lifting seat 12) in the first longitudinal shifting guide groove 84, pushing and pulling the first guide plate 83 and the entire first longitudinal shifting movable support frame 50 longitudinally, which can also provide additional support for the lower lifting seat 12. Similarly, the second longitudinal shifting movable support frame 60 is provided with a second guide plate 86, and the second guide plate 86 has a second longitudinal shifting guide groove 87. The rear linkage longitudinal shifting transmission component 82 includes a second guide member 88 (such as a rear roller), and the second guide member 88 is disposed on the second longitudinal shifting guide groove 87. In this linkage method, the corresponding guide groove trajectory can be set as needed, and the corresponding guide groove plate can be disassembled and replaced for debugging and operation.

Claims

1. A bag sealing and cutting device for a packaging machine, including a bracket (1) and a sealing and cutting mechanism (2) on the bracket (1). The sealing and cutting mechanism (2) includes a paired upper sealing component (21) and a lower sealing component (22). The sealing and cutting mechanism (2) further includes a bag-cutting knife (20), characterized in that: The bracket (1) is also equipped with a corner insertion mechanism (3). The corner insertion mechanism (3) includes a front corner insertion part (31) and a rear corner insertion part (32). The front corner portion (31) includes a paired left front corner component (311) and a right front corner component (312). The rear corner portion (32) includes a paired left rear corner component (321) and a right rear corner component (322). The front insertion angle portion (31) is positioned on the front side of the sealing and cutting mechanism (2). The rear insertion corner portion (32) is located on the rear side of the sealing and cutting mechanism (2).

2. The bag sealing and cutting device of the packaging machine as described in claim 1, characterized in that: The left front insertion corner component (311) and the right front insertion corner component (312) are respectively moved left and right on the bracket (1). The left rear corner component (321) and the right rear corner component (322) are respectively moved left and right on the bracket (1); The left front corner component (311) and the right front corner component (312) are paired left and right, and are aligned and separated. The left rear corner component (321) and the right rear corner component (322) are paired left and right and are aligned and separated.

3. The bag sealing and cutting device of the packaging machine as described in claim 1, characterized in that: The corner insertion mechanism (3) also includes a left transverse sliding seat (33) and a right transverse sliding seat (34). The left transverse sliding seat (33) and the right transverse sliding seat (34) are connected to the bracket (1). The left front insertion corner component (311) and the left rear insertion corner component (321) are provided on the left transverse base (33), and the left transverse base (33) is equipped with a left transverse drive device (35). The right front insertion corner component (312) and the right rear insertion corner component (322) are provided on the right transverse base (34), and the right transverse base (34) is equipped with a right transverse drive device (36).

4. The bag sealing and cutting device of the packaging machine as described in claim 1, characterized in that: The sealing and cutting mechanism (2) is also equipped with a front feeding belt (5) and a rear feeding belt (6) respectively. The front feeding belt (5) and the rear feeding belt (6) are connected and connected for conveying.

5. The bag sealing and cutting device of the packaging machine as described in claim 4, characterized in that: The support (1) is also provided with a longitudinal moving frame (10), and the sealing and cutting mechanism (2) and the corner insertion mechanism (3) are connected to the longitudinal moving frame (10); The output end of the conveying surface of the front feed belt (5) is longitudinally movable. The input end of the conveying surface of the rear feed belt (6) is set to move longitudinally forward and backward; The conveying surface of the front feed belt (5) is higher than that of the rear feed belt (6).

6. The bag sealing and cutting device of the packaging machine as described in claim 1 or 5, characterized in that: The bracket (1) has an upper lifting seat (11) and a lower lifting seat (12). The upper sealing component (21) is connected to the upper lifting seat (11). The lower sealing component (22) is connected to the lower lifting seat (12). The upper sealing component (21) and the lower sealing component (22) are respectively heat-sealing blocks. The left front insert corner component (311), the right front insert corner component (312), the left rear insert corner component (321), and the right rear insert corner component (322) each adopt a pointed insert corner piece. The upper sealing component (21) is also provided with a knife groove (23) through which the bag-cutting knife (20) passes. The bag-breaking cutter (20) is connected to the upper lifting seat (11) via the lifting and cutting drive component (29); The lower sealing component (22) is also provided with a clearance groove (24) for the bag cutter (20) to extend into and cooperate with the cutting.

7. The bag sealing and cutting device of the packaging machine as described in claim 6, characterized in that: The upper sealing component (21) is set on the mounting plate (25). A buffer spring is provided between the mounting plate (25) and the upper lifting seat (11). A lifting guide structure is also provided between the mounting plate (25) and the upper lifting seat (11). The lifting and cutting drive component (29) is installed on the upper lifting seat (11) through the lifting adjustment frame (28). The upper lifting seat (11) of the bracket (1) is also equipped with a pressure component (13) with a buffer function on the front and / or rear sides. The pressing component (13) is connected to the upper lifting seat (11).

8. The bag sealing and cutting device of the packaging machine as described in claim 1, characterized in that: The bracket (1) is provided with a longitudinal guide rail (14), the longitudinal guide rail (14) is provided with a longitudinal frame (10), the longitudinal frame (10) is connected to a vertical guide rail (15), and the vertical guide rail (15) is connected to an upper lifting seat (11) and a lower lifting seat (12). The upper sealing component (21) and the bag-cutting knife (20) are installed and connected to the upper lifting seat (11). The lower sealing component (22) is installed and connected to the lower lifting seat (12); The upper lifting seat (11) is equipped with an upper eccentric wheel (71) that drives its longitudinal movement and lifting. The upper eccentric wheel (71) has a first rotating shaft (73) that is relatively eccentrically set, and the first rotating shaft (73) is connected to the upper lifting seat (11) for transmission. The lower lifting seat (12) is equipped with a lower eccentric wheel (72) that drives its longitudinal movement and lifting. The lower eccentric wheel (72) has a second rotating shaft (74) that is relatively eccentrically set, and the second rotating shaft (74) is connected to the lower lifting seat (12) in a transmission connection. The upper eccentric wheel (71) and the lower eccentric wheel (72) are connected by a transmission.

9. The bag sealing and cutting device of the packaging machine as described in claim 8, characterized in that: The upper eccentric wheel (71) is connected to the upper gear (78), and the lower eccentric wheel (72) is connected to the lower gear (79). The upper gear (78) and the lower gear (79) mesh with each other and are set to synchronize their rotation speeds. The front feed belt (5) located on the front side of the sealing and cutting mechanism (2) is equipped with a first longitudinal movable support frame. The first longitudinal movable support frame is provided with a first transmission roller group (51), which includes an output transmission roller (52) disposed at the output end of the front feed belt (5). The front feed belt (5) is wound around the first transmission roller group (51). The rear feed belt (6), located behind the sealing and cutting mechanism (2), is equipped with a second longitudinal movable support frame. The second longitudinal movable support frame is provided with a second transmission roller group (61), which includes an input transmission roller (62) disposed at the input end of the rear feed belt (6), and the rear feed belt (6) is wound around the second transmission roller group (61).

10. The bag sealing and cutting device of the packaging machine as described in claim 8, characterized in that: The longitudinal transfer frame (10) is connected to a front linkage longitudinal transfer transmission component (81) and a rear linkage longitudinal transfer transmission component (82). The front linkage longitudinal transmission component (81) is connected to the first longitudinal movable bracket (50) (1) in a transmission connection. The rear linkage longitudinal transmission component (82) is connected to the second longitudinal movable bracket (60) (1) in a transmission connection; The front linkage longitudinal transmission component (81) and the rear linkage longitudinal transmission component (82) are connected to the lower lifting seat (12). The first longitudinal movable support (50) (1) is provided with a first guide plate (83), and the first guide plate (83) has a first longitudinal guide groove (84). The front connecting longitudinal transmission component includes a first guide member (85), and the first guide member (85) is disposed on the first longitudinal guide groove (84). The second longitudinal movable support (60) (1) is provided with a second guide plate (86), the second guide plate (86) has a second longitudinal guide groove (87), and the rear connected longitudinal transmission component includes a second guide (88), the second guide (88) is disposed on the second longitudinal guide groove (87).

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