Film drawing and hot cutting mechanism of pillow type packaging machine

Abstract

The utility model relates to a pillow type packaging machine film drawing hot cutting mechanism, which comprises a mounting frame, a driving wheel set, a driven wheel set, a driving belt set, a driven belt set and a cutter assembly, the driving wheel set and the driven wheel set are symmetrically arranged on two sides of a film material belt through the mounting frame, the driving belt set is arranged on the driving wheel set, the driven belt set is arranged on the driven wheel set, and the cutter assembly is arranged on the mounting frame. The driving belt set and the driven belt set make contact with the two sides of the film material belt correspondingly so as to pull the film material belt clamped between the driving belt set and the driven belt set. The cutter assembly comprises a cutter, a supporting plate, a driving part and a cutter holder, the cutter is located between the two driving wheel sets and movably arranged on one side of the film material belt, the supporting plate is arranged on the other side of the film material belt, the cutter is in transmission connection with the driving end of the driving part through the cutter holder, the cutter holder heats the cutter, and the driving part drives the cutter to move transversely. And hot cutting operation is carried out on the film material belt between the cutter and the supporting plate. Film drawing and hot cutting are integrated, the whole structure is simple, and adjustment and maintenance are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a film-drawing and hot-cutting mechanism of a pillow-type packaging machine. Background Art

[0002] In the production process of daily necessities, food, and important parts, it is necessary to use packaging machines to put products into packaging bags and seal them for preservation. Among them, pillow packaging machines are automatic continuous shrink packaging equipment that can automatically complete the feeding, forming, sealing, cutting and other processes of products. The packaged products are pillow-shaped. The packaging film is usually a plastic film or a composite film. The packaging film is formed into a sealed packaging bag through longitudinal sealing, transverse sealing and cutting.

[0003] The existing pillow packaging machine uses gears to engage the packaging film to pull the film. The force point of pulling the film is at a certain distance from the position of the longitudinal sealing cutter. For soft packaging films, wrinkles are easily generated, affecting the forming effect of the packaging bag.

[0004] Therefore, a new film-drawing and hot-cutting mechanism for pillow packaging machines is designed. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a film-drawing and hot-cutting mechanism for a pillow-type packaging machine.

[0006] The utility model provides a film-pulling and hot-cutting mechanism for a pillow-type packaging machine, comprising a mounting frame, a driving wheel group, a driven wheel group, a driving belt group, a driven belt group, and a cutter assembly. The driving wheel group and the driven wheel group are symmetrically arranged on both sides of a film material belt through the mounting frame. The driving belt group is arranged on the driving wheel group, and the driven belt group is arranged on the driven wheel group. The driving belt group and the driven belt group are in contact with both sides of the film material belt respectively. The driving wheel group drives the driving belt group to rotate so as to pull the film material belt sandwiched between the driving belt group and the driven belt group.

[0007] The cutter assembly includes a cutter, a support plate, a driving member and a cutter holder. The cutter is located between two driving wheel groups and is movably arranged on one side of the film material strip. The support plate is arranged on the other side of the film material strip. The cutter is connected to the driving end of the driving member through the cutter holder. The cutter holder heats the cutter, and the driving member drives the cutter to move laterally to perform hot cutting operations on the film material strip between the cutter and the support plate.

[0008] In some embodiments, the driving wheel group includes a first driving wheel and a second driving wheel arranged coaxially, and the driving belt group includes a first driving belt and a second driving belt, the first driving belt is arranged between the two first driving wheels, and the second driving belt is arranged between the two second driving wheels, the first driving wheel and the second driving wheel respectively drive the first driving belt and the second driving belt to rotate, and a gap is formed between the first driving belt and the second driving belt to avoid the cutter.

[0009] In some embodiments, the driven wheel group includes a first driven wheel and a second driven wheel which are coaxially arranged, and the driven belt group includes a first driven belt and a second driven belt, the first driven belt is sleeved between the two first driven wheels, and the second driven belt is sleeved between the two second driven wheels, the first driven wheel and the second driven belt respectively drive the first driven belt and the second driven belt to rotate, and a gap is formed between the first driven belt and the second driven belt to avoid the cutter, and the cutter hot-cuts the film strip to form a tangent, the first driven belt cooperates with the first active belt to clamp the lower part of the tangent of the film strip, and the second driven belt cooperates with the second active belt to clamp the upper part of the tangent of the film strip.

[0010] In some embodiments, the first driving wheel, the second driving wheel, the first driven wheel, and the second driven wheel are all synchronous wheels, and the first driving belt, the second driving belt, the first driven belt, and the second driven belt are all synchronous belts.

[0011] In some embodiments, the first active belt is wider than the second active belt, the first active belt has the same width as the first driven belt, and the second active belt has the same width as the second driven belt.

[0012] In some embodiments, the cutter assembly is connected to the mounting frame through a top support plate, the driving member is fixed to the top support plate through a bracket, the support plate is connected to the top support plate through a side plate, the driving end of the driving member is provided with a heat insulation plate, the knife holder is installed on one side of the heat insulation plate, the cutter is fixed to one side of the knife holder through a fixing plate, the support plate is located between two driven wheel groups, and the support plate is provided with a avoidance hole that cooperates with the cutter.

[0013] In some embodiments, the heat insulation board is provided with a bearing seat, a bearing is installed on one side of the bearing seat through a central axis, the bearing is connected to the second active belt of the active belt group, and the cutter tightens or loosens the second active belt through the bearing during the lifting process.

[0014] In some embodiments, the bearing is connected only to the second driving belt.

[0015] In some embodiments, the driving member is a cylinder.

[0016] In some embodiments, the mounting frame includes a vertical plate, a mounting plate, a fixed column and a mounting seat. The vertical plate and the mounting plate are arranged parallel to each other. The two fixed columns are vertically fixed on one side of the vertical plate. A mounting seat is provided on each fixed column. A driving wheel group and a driven wheel group are arranged in parallel on the mounting seat. The mounting plate is fixed to the top support plate, and the middle part of the fixed column passes through the mounting plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: the driving wheel group and the driven wheel group respectively drive the driving belt group and the driven belt group to operate synchronously to pull the film material strip, and the cutter between the two driving wheel groups performs a hot cutting operation on the film material strip. The cutter with a higher temperature uses heat to cut the film material strip and glues the two pieces of film material strips together to form a longitudinal seal. The film pulling and hot cutting are integrated into one mechanism, making the entire mechanism structure simple and easy to adjust and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the film-drawing and hot-cutting mechanism of the pillow packaging machine in an embodiment of the present application.

[0019] Figure 2 This is the second three-dimensional structural schematic diagram of the film-drawing and hot-cutting mechanism of the pillow packaging machine in the embodiment of the present application.

[0020] Figure 3 This is the third three-dimensional structural diagram of the film-drawing and hot-cutting mechanism of the pillow packaging machine according to an embodiment of the present application.

[0021] Figure 4 It is a front view structural schematic diagram of the film pulling and hot cutting mechanism of the pillow packaging machine in an embodiment of the present application.

[0022] Figure 5 It is a side structural schematic diagram of the film-drawing and hot-cutting mechanism of the pillow packaging machine according to an embodiment of the present application.

[0023] Figure 6 It is a schematic top view of the film-drawing and hot-cutting mechanism of the pillow packaging machine according to an embodiment of the present application.

[0024] Reference numerals: 101, film strip; 102, first edge; 103, second edge; 104, tangent line; 105, edge material; 106, gap;

[0025] 1. Mounting frame; 11. Top support plate; 12. Bracket; 13. Side panels; 14. Vertical panels; 15. Mounting plate; 16. Fixing column; 17. Mounting base;

[0026] 2. Driving wheel assembly; 21. First driving wheel; 22. Second driving wheel; 23. Convex ring;

[0027] 3. Driven wheel group; 31. First driven wheel; 32. Second driven wheel;

[0028] 4. Active belt assembly; 41. First active belt; 42. Second active belt;

[0029] 5. Driven belt assembly; 51. First driven belt; 52. Second driven belt;

[0030] 6. Cutter assembly; 61. Cutter; 62. Support plate; 63. Drive member; 64. Cutter seat; 65. Heat insulation board; 66. Bearing seat; 67. Bearing; 68. Avoidance hole; 69. Fixing plate. DETAILED DESCRIPTION

[0031] The specific implementation of the present utility model is introduced with reference to the accompanying drawings.

[0032] refer to Figure 1 The first edge 102 and the second edge 103 of the film strip 101 are folded together during the transportation of the film strip 101, so that the film strip 101 is formed into a cylindrical shape, and the product is pushed into the cylindrical film strip 101. The folded first edge 102 and the second edge 103 of the film strip 101 enter between the driving wheel group 2 and the driven wheel group 3 together through the driving belt group 4 and the passive belt group. The heated cutter 61 cuts the first edge 102 and the second edge 103 of the film strip 101 together, and at the same time, the first edge 102 and the second edge 103 of the film strip 101 are hot-melt bonded together to form a longitudinal seal of the packaging bag. The edge materials 105 formed by cutting the first edge 102 and the second edge 103 by the cutter 61 are also bonded together and then rolled up together into the waste barrel.

[0033] refer to Figures 1 to 6 A film-pulling and hot-cutting mechanism of a pillow-type packaging machine includes a mounting frame 1, a driving wheel group 2, a driven wheel group 3, a driving belt group 4, a driven belt group 5, and a cutter assembly 6. The driving wheel group 2 and the driven wheel group 3 are symmetrically arranged on both sides of a film material belt 101 through the mounting frame 1. The driving belt group 4 is arranged on the driving wheel group 2, and the driven belt group 5 is arranged on the driven wheel group 3. The driving belt group 4 and the driven belt group 5 are in contact with both sides of the film material belt 101 respectively. The driving wheel group 2 drives the driving belt group 4 to rotate to pull the film material belt 101 sandwiched between the driving belt group 4 and the driven belt group.

[0034] Among them, the cutter assembly 6 includes a cutter 61, a support plate 62, a driving member 63 and a knife seat 64. The cutter 61 is located between the two driving wheel groups 2 and is movably arranged on one side of the film material strip 101. The support plate 62 is arranged on the other side of the film material strip 101. The cutter 61 is connected to the driving end of the driving member 63 through the knife seat 64. The knife seat 64 heats the cutter 61, and the driving member 63 drives the cutter 61 to move horizontally to perform hot cutting operations on the film material strip 101 between the cutter 61 and the support plate 62.

[0035] The film-drawing and hot-cutting mechanism of the pillow packaging machine of the present application drives the driving belt group 4 and the driven belt group 5 to operate synchronously through the driving wheel group 2 and the driven wheel group 3 respectively to pull the film material strip 101. The cutter 61 between the two driving wheel groups 2 performs a hot-cutting operation on the film material strip 101. The cutter 61 with a higher temperature uses heat to cut the film material strip 101 and glues the two film material strips 101 together to form a longitudinal seal. The film-drawing and hot-cutting are integrated in one mechanism, so that the structure of the entire mechanism is simple and easy to adjust and maintain.

[0036] In order to coordinate the movement between the cutter 61 and the active belt group 4, in this embodiment, reference Figures 1 to 3 The driving wheel group 2 includes a first driving wheel 21 and a second driving wheel 22 which are coaxially arranged. The driving belt group 4 includes a first driving belt 41 and a second driving belt 42. The first driving belt 41 is sleeved between the two first driving wheels 21, and the second driving belt 42 is sleeved between the two second driving wheels 22. The first driving wheel 21 and the second driving wheel 22 respectively drive the first driving belt 41 and the second driving belt 42 to rotate. A gap 106 is formed between the first driving belt 41 and the second driving belt 42 to avoid the cutter 61.

[0037] It can be understood that, in this arrangement, the first driving wheel 21 and the second driving wheel 22 are arranged on a driving synchronous wheel, and the tooth surface of the driving synchronous wheel is separated by the convex ring 23 to form the first driving wheel 21 and the second driving wheel 22. The two driving synchronous wheels are coaxially provided with a rotating shaft of an external transmission gear (not shown in the figure), and the gear is driven by the motor, so that the first driving wheel 21 and the second driving wheel 22 rotate synchronously, and the first driving belt 41 and the second driving belt 42 are respectively sleeved on the first driving wheel 21 and the second driving wheel 22, thereby separating the first driving belt 41 and the second driving belt 42. A gap 106 can be formed between the belts 42 for the cutter 61 to move. After the first edge 102 and the second edge 103 of the film material belt 101 are folded together, they enter between the driving wheel group 2 and the driven wheel group 3. The first driving belt 41 and the second driving belt 42 are in contact with the folded first edge 102 and the second edge 103. After the first edge 102 and the second edge 103 of the film material belt 101 are hot-cut by the cutter 61, the first driving belt 41 and the second driving belt 42 respectively pull the lower and upper parts of the tangent line 104 of the film material belt 101. The lower part is close to the packaging bag, and the upper part is the edge material 105, which is rolled up through the waste drum.

[0038] In order to coordinate the movement between the cutter 61 and the driven belt group 5, in this embodiment, reference Figures 1 to 3 The driven wheel group 3 includes a first driven wheel 31 and a second driven wheel 32 which are coaxially arranged. The driven belt group 5 includes a first driven belt 51 and a second driven belt 52. The first driven belt 51 is sleeved between the two first driven wheels 31, and the second driven belt 52 is sleeved between the two second driven wheels 32. The first driven wheel 31 and the second driven belt 52 respectively drive the first driven belt 51 and the second driven belt 52 to rotate. A gap 106 is formed between the first driven belt 51 and the second driven belt 52 to avoid the cutter 61. The cutter 61 hot-cuts the film strip 101 to form a tangent line 104. The first driven belt 51 cooperates with the first active belt 41 to clamp the lower part of the tangent line 104 of the film strip 101. The second driven belt 52 cooperates with the second active belt 42 to clamp the upper part of the tangent line 104 of the film strip 101.

[0039] It can be understood that, in this arrangement, the first driven wheel 31 and the second driven wheel 32 are arranged on a driven synchronous wheel, and the tooth surface of the driven synchronous wheel is separated by the convex ring 23 to form the first driven wheel 31 and the second driven wheel 32. The two driven synchronous wheels are connected to the active synchronous wheel through gears (not shown in the figure), so that the first driven wheel 31 and the second driven wheel 32 rotate synchronously, and the first driven belt 51 and the second driven belt 52 are respectively sleeved on the first driven wheel 31 and the second driven wheel 32, thereby separating the first driven belt 51 and the second driven belt 52, and the first driven belt 51 and the second driven belt 52 are separated. A gap 106 can be formed for the cutter 61 to move. After the first edge 102 and the second edge 103 of the film strip 101 are folded together, they enter between the driving wheel group 2 and the driven wheel group 3. The first driven belt 51 and the second driven belt 52 are in contact with the folded first edge 102 and the second edge 103. After the first edge 102 and the second edge 103 of the film strip 101 are hot-cut by the cutter 61, the first driven belt 51 and the second driven belt 52 respectively pull the lower and upper parts of the tangent line 104 of the film strip 101. The lower part is close to the packaging bag, and the upper part is the edge material 105, which is rolled up through the waste drum.

[0040] In order to ensure stable transmission between the driving wheel group 2 and the driving belt group 4, and between the driven wheel group 3 and the driven belt group 5, in this embodiment, reference Figures 1 to 3 The first driving wheel 21, the second driving wheel 22, the first driven wheel 31, and the second driven wheel 32 are all synchronous wheels, and the first driving belt 41, the second driving belt 42, the first driven belt 51, and the second driven belt 52 are all synchronous belts.

[0041] It is understandable that, with such an arrangement, the teeth meshing with each other between the synchronous wheel and the synchronous belt can ensure stable transmission between the driving wheel group 2 and the driving belt group 4, and between the driven wheel group 3 and the driven belt group 5.

[0042] In order to reduce the width of the longitudinal sealing portion of the film strip 101, in this embodiment, Figure 2 The first driving belt 41 is wider than the second driving belt 42 , the first driving belt 41 has the same width as the first driven belt 51 , and the second driving belt 42 has the same width as the second driven belt 52 .

[0043] It can be understood that, with such an arrangement, the first driven belt 51 and the second driven belt 52 respectively pull the lower and upper parts of the tangent line 104 of the film strip 101, the lower part is close to the packaging bag, and the upper part is the edge material 105. The narrower first driven belt 51 can make the width of the lower part of the tangent line 104 smaller, thereby reducing the width of the longitudinal seal of the film strip 101. The wider second driven belt 52 can have a larger contact area with the edge material 105, and can pull the wider edge material 105 to adapt to film strips 101 of different widths.

[0044] In order to stably install the cutter 61 between the two driving wheel groups 2, in this embodiment, reference Figures 1 to 6 The cutter assembly 6 is connected to the mounting frame 1 through the top support plate 11, the driving member 63 is fixed to the top support plate 11 through the bracket 12, and the support plate 62 is connected to the top support plate 11 through the side plate 13. The driving end of the driving member 63 is provided with a heat insulation plate 65, and the knife seat 64 is installed on one side of the heat insulation plate 65. The cutter 61 is fixed to one side of the knife seat 64 through the fixing plate 69. The support plate 62 is located between the two driven wheel groups 3, and the support plate 62 is provided with a avoidance hole 68 that cooperates with the cutter 61.

[0045] It can be understood that, with such an arrangement, the cutter assembly 6 is hoisted between the two driving wheel groups 2 through the top support plate 11, and the cutter 61 is placed horizontally between the two driving wheel groups 2, thereby being arranged in parallel between the driving belt group 4 and the driven belt group 5. The electric heating element arranged in the knife seat 64 heats the knife seat 64 and the cutter 61, and the cutter 61 uses high temperature to perform hot cutting operations on the film material strip 101. Driven by the driving member 63, the cutter 61 moves from the side of the driving belt group 4 to the side of the driven belt group 5, and the support plate 62 can support the driven belt group 5 and the film material strip 101, so that the seal formed by the hot cutting of the cutter 61 is consistent each time.

[0046] In order to better roll up the edge material 105, in this embodiment, refer to Figure 2 The heat insulation board 65 is provided with a bearing seat 66, and a bearing 67 is installed on one side of the bearing seat 66 through the central axis. The bearing 67 is connected to the second active belt 42 of the active belt group 4. The cutter 61 tightens or loosens the second active belt 42 through the bearing 67 during the lifting process.

[0047] When the cutter 61 returns to one side of the active belt group 4, the bearing 67 will tighten the second active belt 42, thereby increasing the tension of the second active belt 42, so that the force of the second active belt 42 and the second driven belt 52 pulling the edge material 105 becomes larger.

[0048] In order to prevent the winding of the edge material 105 from affecting the longitudinal sealing of the film material strip 101, in this embodiment, Figure 2 , the bearing 67 is only connected to the second driving belt 42.

[0049] It can be understood that, with such an arrangement, the second active belt 42 contacts the upper side of the tangent 104, the first active belt 41 contacts the lower side of the tangent 104, and the bearing 67 is only connected to the second active belt 42, so that the bearing 67 only affects the upper part of the tangent 104 of the film strip 101, and does not affect the lower part of the tangent 104 of the film strip 101, so that the longitudinal sealing part of the film strip 101 will not be affected.

[0050] In order to quickly control the action of the cutter 61, in this embodiment, reference Figure 2 and Figure 5 , the driving member 63 is a cylinder.

[0051] It can be understood that with such a setting, the cylinder uses compressed air as a power source. When the film strip 101 needs to be hot-cut, the cylinder can drive the cutter 61 to extend quickly. When the film strip 101 stops running, the cylinder drives the cutter 61 to retract quickly, avoiding the cutter 61 from continuously hot-cutting the film strip 101 at one position, thereby ensuring the consistency of the longitudinal sealing of the film strip 101.

[0052] In order to stably install the driving wheel group 2 and the driven wheel group 3, in this embodiment, reference Figures 4 to 6The mounting frame 1 includes a vertical plate 14, a mounting plate 15, a fixing column 16 and a mounting seat 17. The vertical plate 14 and the mounting plate 15 are arranged parallel to each other. Two fixing columns 16 are vertically fixed on one side of the vertical plate 14. A mounting seat 17 is set on each fixing column 16. The driving wheel group 2 and the driven wheel group 3 are arranged parallel to the mounting seat 17. The mounting plate 15 is fixed to the top support plate 11, and the middle part of the fixing column 16 passes through the mounting plate 15.

[0053] It can be understood that, with such an arrangement, the mounting frame 1 formed by the vertical plate 14, the mounting plate 15 and the fixed column 16 has a simple structure and is easy to assemble. The mounting plate 15 is connected to the cutter assembly 6 through the top support plate 11, and the fixed column 16 is connected to the driving wheel group 2 and the driven wheel group 3 through the mounting seat 17, thereby stably installing the cutter assembly 6, the driving wheel group 2, the driven wheel group 3, the driving belt group 4, and the driven belt group 5 together to ensure the effect of film pulling and hot cutting.

[0054] In the embodiment of the present application, the cutter 61 is movably arranged between the active belt group 4 and the driven belt group 5 through the mounting frame 1. The gap 106 between the first active belt 41 and the second active belt 42 of the active belt group 4 and the gap 106 between the first driven belt 51 and the second driven belt 52 of the driven belt group 5 provide a clearance for the movement of the cutter 61. The active belt group 4 and the driven belt group 5 are driven to operate synchronously by the active wheel group 2 and the driven wheel group 3 respectively to pull the film material strip 101. The cutter 61 between the two active wheel groups 2 performs a hot cutting operation on the film material strip 101. The cutter 61 with a higher temperature uses heat to cut the film material strip 101 and bonds the two film material strips 101 together to form a longitudinal seal. The film pulling and hot cutting are integrated in one mechanism, so that the entire mechanism structure is simple and easy to adjust and maintain.

[0055] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A film-drawing and hot-cutting mechanism for a pillow packaging machine, characterized in that: It includes a mounting frame, a driving wheel group, a driven wheel group, a driving belt group, a driven belt group, and a cutter assembly. The driving wheel group and the driven wheel group are symmetrically arranged on both sides of the film material belt through the mounting frame. The driving belt group is arranged on the driving wheel group, and the driven belt group is arranged on the driven wheel group. The driving belt group and the driven belt group are respectively in contact with both sides of the film material belt. The driving wheel group drives the driving belt group to rotate to pull the film material belt sandwiched between the driving belt group and the driven belt group. The cutter assembly includes a cutter, a support plate, a driving member and a cutter holder. The cutter is located between two driving wheel groups and is movably arranged on one side of the film material strip. The support plate is arranged on the other side of the film material strip. The cutter is connected to the driving end of the driving member through the cutter holder. The cutter holder heats the cutter, and the driving member drives the cutter to move laterally to perform hot cutting operations on the film material strip between the cutter and the support plate.

2. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 1, characterized in that: The driving wheel group includes a first driving wheel and a second driving wheel arranged coaxially, and the driving belt group includes a first driving belt and a second driving belt. The first driving belt is arranged between the two first driving wheels, and the second driving belt is arranged between the two second driving wheels. The first driving wheel and the second driving wheel respectively drive the first driving belt and the second driving belt to rotate, and a gap is formed between the first driving belt and the second driving belt to avoid the cutter.

3. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 2, characterized in that: The driven wheel group includes a first driven wheel and a second driven wheel which are coaxially arranged, and the driven belt group includes a first driven belt and a second driven belt, the first driven belt is sleeved between the two first driven wheels, and the second driven belt is sleeved between the two second driven wheels, the first driven wheel and the second driven belt respectively drive the first driven belt and the second driven belt to rotate, and a gap is formed between the first driven belt and the second driven belt to avoid the cutter, and the cutter hot-cuts the film strip to form a tangent, the first driven belt cooperates with the first active belt to clamp the lower part of the tangent of the film strip, and the second driven belt cooperates with the second active belt to clamp the upper part of the tangent of the film strip.

4. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 3, characterized in that: The first driving wheel, the second driving wheel, the first driven wheel, and the second driven wheel are all synchronous wheels, and the first driving belt, the second driving belt, the first driven belt, and the second driven belt are all synchronous belts.

5. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 3, characterized in that: The first active belt is wider than the second active belt, the first active belt has the same width as the first driven belt, and the second active belt has the same width as the second driven belt.

6. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 1, characterized in that: The cutter assembly is connected to the mounting frame through a top support plate, the driving member is fixed to the top support plate through a bracket, the supporting plate is connected to the top support plate through a side plate, a driving end of the driving member is provided with a heat insulation plate, the knife holder is installed on one side of the heat insulation plate, the cutter is fixed to one side of the knife holder through a fixing plate, the supporting plate is located between two driven wheel groups, and the supporting plate is provided with a avoidance hole that cooperates with the cutter.

7. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 6, characterized in that: The heat insulation board is provided with a bearing seat, a bearing is installed on one side of the bearing seat through the central axis, the bearing is connected to the second active belt of the active belt group, and the cutter tightens or loosens the second active belt through the bearing during the lifting process.

8. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 7, characterized in that: The bearing is connected only to the second driving belt.

9. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 7, characterized in that: The driving member is a cylinder.

10. The film-drawing and hot-cutting mechanism of the pillow packaging machine according to claim 7, characterized in that: The mounting frame includes a vertical plate, a mounting plate, a fixed column and a mounting seat. The vertical plate and the mounting plate are arranged parallel to each other. The two fixed columns are vertically fixed on one side of the vertical plate. A mounting seat is set on each fixed column. A driving wheel group and a driven wheel group are set in parallel on the mounting seat. The mounting plate is fixed to the top support plate, and the middle part of the fixed column passes through the mounting plate.

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