Transverse sealing mechanism of film packaging machine

Abstract

The utility model discloses a transverse sealing mechanism of a film packaging machine, which comprises a transverse sealing component, the transverse sealing component comprises a sealing cutter, a cutter pad and a linkage component, the sealing cutter and the cutter pad are arranged on the left and the right, and the sealing cutter and the cutter pad are arranged on an upper guide rod and a lower guide rod in a sliding manner; the linkage assembly comprises an upper connecting rod set, a lower connecting rod set and a rotating shaft, the rotating shaft is rotationally arranged on the rack, the upper connecting rod set and the lower connecting rod set each comprise a connecting plate, a first connecting rod and a second connecting rod, the connecting plates are connected with the rotating shaft, one end of each first connecting rod is rotationally connected with one end of the corresponding connecting plate, and the other end of each first connecting rod is rotationally connected with the corresponding sealing cutter. And one end of the second connecting rod is rotationally connected with the other end of the connecting plate, and the other end is rotationally connected with the shim. The rotating shaft rotates to drive the connecting plate to swing, the first connecting rod and the second connecting rod drive the sealing cutter and the cutter pad to move oppositely to achieve transverse sealing, and the rotating shaft rotates reversely to drive the sealing cutter and the cutter pad to be away from each other and separated from each other. The utility model has the advantages of simple and compact structure, low processing cost and low maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of film packaging, concretely to a transverse sealing mechanism of film packaging machine. BACKGROUND

[0002] Film packaging includes longitudinal sealing and transverse sealing, longitudinal sealing usually adopts longitudinal sealing roller to roll and press continuous sealing, and transverse sealing adopts sealing knife intermittent sealing. CONTENT

[0003] In view of the technical problems in the background art, the utility model solves the technical problems and aims at providing a transverse sealing mechanism of film packaging machine which is simple and compact in structure.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: the transverse sealing mechanism of film packaging machine, characterized by comprising a transverse sealing part, the transverse sealing part comprises sealing knives and knife pads arranged left and right and a linkage assembly, the sealing knives and the knife pads are vertically arranged and slidably arranged on upper guide rods and lower guide rods, and the upper guide rods and the lower guide rods are horizontally arranged on a rack;

[0005] The linkage assembly comprises upper link rod groups, lower link rod groups and a rotating shaft, the rotating shaft is vertically arranged and rotatably arranged on the rack, the upper link rod groups and the lower link rod groups each comprise a connecting plate, a first link rod and a second link rod, the connecting plate is connected with the rotating shaft, one end of the first link rod is rotatably connected with one end of the connecting plate, the other end of the first link rod is rotatably connected with the sealing knives, one end of the second link rod is rotatably connected with the other end of the connecting plate, and the other end of the second link rod is rotatably connected with the knife pads. The rotating shaft rotates, drives the connecting plate to swing, drives the sealing knives and the knife pads to move towards each other along the upper guide rods and the lower guide rods respectively to realize transverse sealing, and the rotating shaft reversely rotates, drives the sealing knives and the knife pads to move away from each other along the upper guide rods and the lower guide rods, and the two are separated. The utility model is simple and compact in structure, low in processing cost and maintenance cost.

[0006] As a preferred, the rotating shaft is further connected with a swing arm, and the swing arm is rotatably connected with a cylinder which drives the swing arm to reciprocate.

[0007] As a preferred, the transverse sealing mechanism further comprises a material conveying part, the material conveying part comprises first conveying belts and second conveying belts which convey longitudinally, and the beginning end of the second conveying belts moves longitudinally relative to the tail end of the first conveying belts.

[0008] When transverse sealing, the beginning end of the second conveying belts moves away from the first conveying belts, and a transverse sealing space is formed between the two, the sealing knives and the knife pads of the transverse sealing part move towards each other and enter the transverse sealing space.

[0009] In the material conveying process, the start end of the second conveying belt approaches the first conveying belt, and the two are connected.

[0010] The second conveying belt of the material conveying part moves longitudinally relative to the first conveying belt, provides a transverse sealing space for the transverse part, and provides stable conveying for the material after the transverse sealing is completed.

[0011] As a preferred, the second conveying belt is arranged on the first driving wheel and the second driving wheel, the first driving wheel is rotationally arranged on the frame, the second driving wheel is arranged on the moving support, the moving support is arranged adjacent to the first conveying belt, the moving support moves longitudinally relative to the first conveying belt, the frame is provided with a guide rail, and the moving support is slidingly arranged on the guide rail.

[0012] The first driving wheel comprises a driving wheel one and a driving wheel two, the second driving wheel comprises a driving wheel three and a driving wheel four, and the second conveying belt sequentially passes through the driving wheel one, the driving wheel three, the driving wheel four and the driving wheel two. The movement of the moving support makes the start end of the second conveying belt arranged on the second driving wheel move longitudinally relative to the first conveying belt, and the movement of the moving support does not affect the tension of the second conveying belt, and the second conveying belt keeps conveying.

[0013] As a preferred, the knife pad is arranged on the moving seat, the moving seat is provided with an upper guide sleeve and a lower guide sleeve matched with the upper guide rod and the lower guide rod respectively, and the buffer is arranged between the knife pad and the moving seat. The tightness of the sealing knife and the knife pad is improved, and the damage to the sealing knife during pressing is reduced.

[0014] As a preferred, the buffer comprises a spring, the knife pad is provided with a column pin arranged horizontally, the moving seat is provided with a through hole through which the column pin passes, and the column pin is connected through the spring and a through hole locking cap. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of the utility model.

[0016] Figure 2 It is a top view schematic diagram of the utility model.

[0017] Figure 3 It is a left view schematic diagram of the utility model.

[0018] Figure 4 It is a schematic diagram of the second conveying belt of the utility model.

[0019] Fig. 1 is a schematic view of the first conveying belt; Fig. 2 is a schematic view of the second conveying belt; Fig. 3 is a schematic view of the sealing knife; Fig. 4 is a schematic view of the knife pad; Fig. 5 is a schematic view of the upper guide rod; Fig. 6 is a schematic view of the lower guide rod; Fig. 7 is a schematic view of the upper guide sleeve; Fig. 8 is a schematic view of the lower guide sleeve; Fig. 9 is a schematic view of the transverse sealing space; Fig. 10 is a schematic view of the machine frame. DETAILED DESCRIPTION

[0020] The transverse sealing mechanism of the film packaging machine comprises a transverse sealing component and a material conveying component. The transverse sealing component comprises sealing knives 3 and knife pads 4 arranged left and right and a linkage assembly. The sealing knives and the knife pads are vertically arranged and slidably arranged on the upper guide rod 5 and the lower guide rod 6. The upper guide rod and the lower guide rod are horizontally arranged on the machine frame 10. The linkage assembly comprises an upper linkage assembly, a lower linkage assembly and a rotating shaft 56. The rotating shaft is vertically arranged and rotatably arranged on the machine frame 10. The upper linkage assembly and the lower linkage assembly each comprise a connecting plate 53, a first linkage rod 54 and a second linkage rod 55. The connecting plate is connected with the rotating shaft. One end of the first linkage rod 54 is rotatably connected with one end of the connecting plate 53. The other end of the first linkage rod is rotatably connected with the sealing knife 3. One end of the second linkage rod 55 is rotatably connected with the other end of the connecting plate 53. The other end of the second linkage rod 5 is rotatably connected with the knife pad 4. Figure 2 The rotating shaft 56 is further connected with a swing arm 52. The swing arm is rotatably connected with a cylinder 51 which drives the swing arm to swing back and forth. When the cylinder is extended, the swing arm swings counterclockwise, driving the rotating shaft to rotate counterclockwise. The connecting plates of the upper linkage assembly and the lower linkage assembly simultaneously swing counterclockwise. The first linkage rods connected with the connecting plates pull the sealing knives to move towards the knife pads. The second linkage rods connected with the connecting plates push the knife pads to move towards the sealing knives. The sealing knives and the knife pads move towards each other to transversely seal the film. Conversely, when the cylinder 51 is retracted, the swing arm 52 swings clockwise, driving the rotating shaft 56 to rotate clockwise. The connecting plates 53 of the upper linkage assembly and the lower linkage assembly simultaneously swing clockwise. The sealing knives 3 and the knife pads 4 move in the opposite direction through the first linkage rods 54 and the second linkage rods 55. The sealing knives and the knife pads move away from each other.

[0021] The material conveying component comprises a first conveying belt 1 and a second conveying belt 2 arranged longitudinally. The beginning end of the second conveying belt moves longitudinally away from the tail end of the first conveying belt. When transversely sealing, the beginning end of the second conveying belt moves away from the first conveying belt, and the transverse sealing space 9 is formed between the two. The sealing knives 3 and the knife pads 4 of the transverse sealing component move towards each other and enter the transverse sealing space 9 to realize transverse sealing. When conveying materials, the sealing knives and the knife pads move away from each other to give way to the second conveying belt 2. The beginning end of the second conveying belt moves towards the first conveying belt, and the two are connected.Figure 1 The second conveying belt 2 is arranged on the first driving wheel and the second driving wheel, the first driving wheel is rotationally arranged on the frame 10, the second driving wheel is arranged on the moving support 25, the moving support 25 is arranged adjacent to the first conveying belt 1, the moving support 25 moves longitudinally forward and backward relative to the first conveying belt 1, the frame is provided with a guide rail 27, the moving support 25 is slidingly arranged on the guide rail 27, the moving support 25 is connected with the second cylinder 26 in the figure, the moving support 25 is driven by the second cylinder to move longitudinally along the guide rail 27. The first driving wheel comprises a driving wheel one 21 and a driving wheel two 22, the second driving wheel comprises a driving wheel three 23 and a driving wheel four 24, the second conveying belt 2 passes the driving wheel one 21, the driving wheel three 23, the driving wheel four 24 and the driving wheel two 22 in sequence. When the moving support moves forward, the distance between the driving wheel one 21 and the driving wheel three 23 becomes larger, at the same time, the distance between the driving wheel four 24 and the driving wheel two 22 becomes smaller, the two are offset to each other, therefore, the tension of the second conveying belt 2 does not change, and stable conveying can be maintained.

[0022] The knife pad 4 is arranged on the moving seat 43, the moving seat 43 is provided with an upper guide sleeve 7 and a lower guide sleeve 8 matched with the upper guide rod 5 and the lower guide rod 6 respectively, and a buffer is arranged between the knife pad 4 and the moving seat 43. The buffer comprises a spring 41, the knife pad 4 is provided with a column pin 42 arranged horizontally, the moving seat 43 is provided with a through hole through which the column pin 42 passes, and the column pin 42 is connected through the spring 41 and a locking cap 44. When the sealing knife 3 is pressed with the knife pad 4, the spring 41 plays a buffering role, reduces the damage to the sealing knife 3, at the same time, the spring force increases the pressing force of the sealing knife and the knife pad, so that the two are tightly pressed, and the sealing effect is improved.

Claims

1. A cross-seal mechanism for a film packaging machine, characterized by: The transversal sealing mechanism comprises transversal sealing components, the transversal sealing components comprise sealing knives and knife pads arranged left and right, and linkage assemblies, the sealing knives and the knife pads are vertically arranged and slidingly arranged on upper and lower guide rods, and the upper and lower guide rods are horizontally arranged on a rack; The linkage assemblies comprise upper and lower linkage assemblies and a rotating shaft, the rotating shaft is vertically arranged and rotationally arranged on the rack, the upper and lower linkage assemblies each comprise a connecting plate, a first linkage rod and a second linkage rod, one end of the first linkage rod is rotationally connected with one end of the connecting plate, the other end of the first linkage rod is rotationally connected with the sealing knife, one end of the second linkage rod is rotationally connected with the other end of the connecting plate, and the other end of the second linkage rod is rotationally connected with the knife pad.

2. The cross-seal mechanism of a film packaging machine according to claim 1, characterized in that: The rotating shaft is further connected with a swing arm, and the swing arm is rotationally connected with a cylinder for driving the swing arm to swing back and forth.

3. The cross-seal mechanism of a film packaging machine according to claim 1, characterized in that: The transversal sealing mechanism further comprises material conveying components, the material conveying components comprise first and second conveying belts for longitudinal conveying, and the beginning end of the second conveying belt moves longitudinally relative to the tail end of the first conveying belt; During transversal sealing, the beginning end of the second conveying belt moves away from the first conveying belt, and a transversal sealing space is formed between the first and second conveying belts, the sealing knives and the knife pads of the transversal sealing components move towards each other and enter the transversal sealing space; During material conveying, the beginning end of the second conveying belt moves towards the first conveying belt, and the first and second conveying belts are connected.

4. The cross-seal mechanism of a film packaging machine according to claim 3, characterized in that: The second conveying belt is arranged on first and second transmission wheels, the first transmission wheel is rotationally arranged on the rack, the second transmission wheel is arranged on a moving support, the moving support is arranged adjacent to the first conveying belt, the moving support moves longitudinally relative to the first conveying belt, the rack is provided with guide rails, and the moving support is slidingly arranged on the guide rails; The first transmission wheel comprises transmission wheel one and transmission wheel two, the second transmission wheel comprises transmission wheel three and transmission wheel four, and the second conveying belt sequentially passes through transmission wheel one, transmission wheel three, transmission wheel four and transmission wheel two.

5. The cross-seal mechanism of a film packaging machine according to claim 1, characterized in that: The knife pad is arranged on a moving seat, the moving seat is provided with an upper guide sleeve and a lower guide sleeve matched with the upper and lower guide rods respectively, and a buffer is arranged between the knife pad and the moving seat.

6. The cross-seal mechanism of a film packaging machine according to claim 5, characterized in that: The buffer comprises a spring, the knife pad is provided with a vertically arranged pin, the moving seat is provided with a through hole through which the pin passes, and the pin is connected through the spring and a through hole locking cap.

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