Dust cover heat sealing and cutting mechanism

Abstract

The utility model discloses a dust cover heat sealing and cutting mechanism, which relates to the technical field of bag making machines and comprises a chopper component and a frame, a portal frame is slidably connected onto the frame, an elastic component is mounted on a cross beam of the portal frame, a lifting plate is fixed at the bottom end of the elastic component, a heat sealing cutter is fixed at the bottom end of the lifting plate, and the chopper component is slidably connected onto the frame. A supporting beam is horizontally and fixedly erected in the machine frame and located under the heat sealing cutter. The fodder chopper assembly is arranged corresponding to the discharging end of the heat sealing cutter, and a control assembly used for controlling the fodder chopper assembly to be opened and closed is installed on a cross beam of the portal frame. And the driving assembly is mounted on the rack and can drive the portal frame to ascend and descend. According to the dust cover heat sealing and cutting mechanism, the defect that a cutting edge of a cutter is prone to being damaged due to the fact that the cutter makes rigid contact with a cutter holder in the cutting process can be overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to bag making machine technical field especially relates to a dust cover heat seal cutting mechanism. BACKGROUND

[0002] The vehicle will usually be provided with a dust cover on the seat during the maintenance process.

[0003] The heat seal cutting of the dust cover is formed after the plastic film tube is blown into a flat strip through exhaust, so as to facilitate the conveying, heat sealing and cutting of the strip-shaped film tube by the bag making machine, thereby forming a dust cover with an opening at one end.

[0004] The inventor finds that the existing bag making machine has some defects, such as, the rigid contact between the cutter and the cutter holder during the heat seal cutting process, which easily causes damage to the cutting edge of the cutter.

[0005] Therefore, it is necessary to develop a dust cover heat seal cutting mechanism for a bag making machine to solve the above-mentioned defects. SUMMARY

[0006] The utility model discloses a dust cover heat seal cutting mechanism, which can solve the defect that the cutting edge of the cutter is easily damaged due to the rigid contact between the cutter and the cutter holder during the cutting process.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] The dust cover heat seal cutting mechanism comprises a cutter assembly and a rack, the rack is slidably connected with a portal frame, the portal frame is installed with an elastic assembly on the crossbeam, the bottom end of the elastic assembly is fixed with a lifting plate, the bottom end of the lifting plate is fixed with a heat seal cutter, the inside of the rack is horizontally fixed with a support beam, and the support beam is located directly below the heat seal cutter; the cutter assembly is correspondingly arranged at the discharge end of the heat seal cutter, the crossbeam of the portal frame is installed with a control assembly for controlling the opening and closing of the cutter assembly; the rack is further installed with a driving assembly, and the driving assembly can drive the portal frame to lift.

[0009] Preferably, the cutter assembly comprises a movable cutter and a fixed cutter, the movable cutter has a first end and a second end, the first end of the movable cutter is rotatably connected with the side wall of one end of the lifting plate, the second end of the movable cutter is rotatably connected with the control assembly, and the fixed cutter is horizontally fixed on one side of the support beam close to the movable cutter.

[0010] Preferably, the control assembly comprises a swing arm, the swing arm is arranged obliquely, the bottom end of the swing arm is rotationally connected with the second end of the movable cutter through a pin shaft, the top end of the swing arm is rotationally connected with the portal frame, and the top end of the swing arm is close to one end of the first end of the movable cutter.

[0011] Preferably, a through groove is arranged on the lifting plate, the through groove is an arc-shaped notch, and the center of the through groove is located on the rotation axis of the first end of the movable cutter; one end of the pin shaft penetrates through the through groove and is fixedly connected with a limiting block; and the limiting block is in sliding contact with the lifting plate.

[0012] Preferably, a plurality of elastic assemblies are arranged on the portal frame, the elastic assemblies are arranged along the length direction of the beam of the portal frame, the elastic assembly comprises a compression spring, a vertical rod and a fixed block, the compression spring is sleeved on the vertical rod, the compression spring is located between the lifting plate and the portal frame, and the top end of the vertical rod penetrates through the beam of the portal frame in a sliding mode and is fixedly connected with the fixed block.

[0013] Preferably, the drive assembly comprises a telescopic rod, the telescopic rod is arranged in one-to-one correspondence with the two legs of the portal frame, the telescopic rod is vertically arranged and fixedly connected with the rack, and the telescopic end of the telescopic rod is fixedly connected with the bottom end of the leg.

[0014] Preferably, a guide ring is fixed to the outer wall of the rack, and the leg of the portal frame is in sliding connection with the guide ring through a linear bearing.

[0015] Preferably, sliding blocks are fixed to the two ends of the lifting plate, sliding rails are fixed to the inner wall of the rack, the sliding rails are arranged in one-to-one correspondence with the sliding blocks, and the sliding blocks are in sliding way cooperation with the sliding rails.

[0016] Preferably, the control assembly comprises a push rod, the tail end of the cylinder body of the push rod is rotationally connected with the portal frame, and the telescopic end of the push rod is rotationally connected with the second end of the movable cutter.

[0017] Compared with the prior art, the utility model has the beneficial technical effects that:

[0018] In the cutting process, the control assembly controls the guillotine cutter assembly to be closed, so that the guillotine cutter assembly cuts the belt-shaped film tube, and because the guillotine cutter assembly does not have rigid contact with other components in the cutting process, the cutting edge is prevented from being damaged, and the service life of the cutting edge is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in connection with the drawings.

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0021] Figure 2 It is another angle of the three-dimensional structure schematic view of the utility model;

[0022] Figure 3 It is the state structure schematic view of the utility model when heat sealing cutting;

[0023] Figure 4 It is the sectional structure schematic view of the utility model;

[0024] Figure 5 It is another embodiment of the control assembly of the utility model.

[0025] Mark explanation: 16, push rod;15, belt film tube;14, telescopic rod;13, fixed block;12, vertical rod;11, compression spring;10, limit block;9, pin shaft;8, swing arm;7, lifting plate;701, through slot;702, sliding block;6, fixed knife;5, movable knife;4, support beam;3, heat sealing knife;2, gantry;1, rack;101, guide ring;102, slide rail. DETAILED DESCRIPTION

[0026] The core of the utility model is to provide a dust cover heat sealing cutting mechanism, which can solve the defect that the cutting knife blade is damaged due to rigid contact with the knife seat during the cutting process.

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "middle" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0029] In some embodiments, including the guillotine knife assembly and the rack 1, the rack 1 is slidably connected with the gantry 2, the elastic assembly is installed on the crossbeam of the gantry 2, the bottom end of the elastic assembly is fixed with the lifting plate 7, the bottom end of the lifting plate 7 is fixed with the heat sealing knife 3, the support beam 4 is horizontally fixed inside the rack 1 and located directly below the heat sealing knife 3; the guillotine knife assembly is correspondingly arranged at the discharging end of the heat sealing knife 3, and the control assembly for controlling the opening and closing of the guillotine knife assembly is installed on the crossbeam of the gantry 2; further comprising a driving assembly installed on the rack 1, which can drive the gantry 2 to rise and fall.

[0030] Specifically, the heat sealing knife 3 belongs to the prior art, such as electric heating knife, hot oil knife, etc.

[0031] The device is installed at the discharging end of the conveying mechanism of the bag making machine, and the strip-shaped film tube 15 passes between the lifting plate 7 and the support beam 4. When the passing length reaches a set value (which can be measured by setting an inductor), the conveying mechanism stops conveying the strip-shaped film tube 15, the driving assembly drives the gantry 2 to descend, and then the elastic assembly, the lifting plate 7 and the heat sealing knife 3 descend, so that the strip-shaped film tube 15 is compressed between the heat sealing knife 3 and the support beam 4. The heat sealing knife 3 seals the strip-shaped film tube 15, and then the gantry 2 overcomes the resistance of the elastic assembly and continues to descend, the control assembly controls the guillotine knife assembly to close, so that the guillotine knife assembly cuts the strip-shaped film tube 15; after cutting is completed, the gantry 2 rises and resets, so that the elastic assembly, the lifting plate 7, the heat sealing knife 3 and the guillotine knife assembly reset.

[0032] In some embodiments, the guillotine knife assembly includes a movable knife 5 and a fixed knife 6, the movable knife 5 has a first end and a second end, the first end of the movable knife 5 is rotatably connected with the side wall of one end of the lifting plate 7, the second end of the movable knife 5 is rotatably connected with the control assembly, and the fixed knife 6 is horizontally fixed on one side of the support beam 4 close to the movable knife 5. The movable knife 5 and the fixed knife 6 form a guillotine knife.

[0033] In some embodiments, one embodiment of the control assembly: the control assembly includes a swing arm 8, the swing arm 8 is arranged obliquely, the bottom end of the swing arm 8 is rotatably connected with the second end of the movable knife 5 through a pin shaft 9, the top end of the swing arm 8 is rotatably connected with the gantry 2, and the top end of the swing arm 8 is close to the first end of the movable knife 5. After the heat sealing knife 3 descends to the bottommost position, the gantry 2 drives the swing arm 8 to continue to descend, the swing arm 8 drives the movable knife 5 to swing downward, so that the movable knife 5 and the fixed knife 6 are closed, and the cutting of the strip-shaped film tube 15 is completed. The second end of the movable knife 5 can be understood as the end for installing the handle of the manual guillotine knife.

[0034] In some embodiments, a through slot 701 is formed on the lifting plate 7, the through slot 701 is an arc-shaped notch, and the center of the through slot 701 is located on the rotation axis of the first end of the movable cutter 5. One end of the pin shaft 9 penetrates through the through slot 701 and is fixedly connected with the limiting block 10, and the limiting block 10 is in sliding contact with the lifting plate 7. The arrangement of the limiting block 10 prevents the pin shaft 9 from moving axially, so that the second end of the movable cutter 5 cannot move away from the lifting plate 7, and the movable cutter 5 is more stable when swinging, and the second end of the movable cutter 5 can cooperate with the fixed cutter 6 during the closing process.

[0035] In some embodiments, another embodiment of the control assembly is provided. The control assembly includes a push rod 16, a tail end of a cylinder body of the push rod 16 is rotationally connected with the gantry 2, and a telescopic end of the push rod 16 is rotationally connected with the second end of the movable cutter 5. When the belt-shaped film tube 15 is compressed between the heat sealing cutter 3 and the support beam 4, the gantry 2 stops descending, at this time, the telescopic end of the push rod 16 is elongated, and the second end of the movable cutter 5 swings downward. The push rod 16 can be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0036] In some embodiments, a plurality of elastic assemblies are provided, the plurality of elastic assemblies are arranged at intervals along the length direction of the cross beam of the gantry 2, and each elastic assembly includes a compression spring 11, a vertical rod 12 and a fixed block 13. The compression spring 11 is sleeved on the vertical rod 12, the compression spring 11 is located between the lifting plate 7 and the gantry 2, and the top end of the vertical rod 12 penetrates through the cross beam of the gantry 2 and is fixedly connected with the fixed block 13.

[0037] In some embodiments, the driving assembly includes a telescopic rod 14, the telescopic rod 14 is arranged in one-to-one correspondence with the two legs of the gantry 2, the telescopic rod 14 is vertically arranged and fixedly connected with the rack 1, and the telescopic end of the telescopic rod 14 is fixedly connected with the bottom end of the leg. The telescopic rod 14 can be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. The telescopic end of the telescopic rod 14 drives the gantry 2 to ascend and descend. Obviously, the driving assembly can also be other structures as long as it can drive the gantry 2 to ascend and descend, for example, a crankshaft is rotationally arranged on the rack 1, the crankshaft is in transmission connection with an electric motor, and the leg of the gantry 2 is in rotational connection with the crankshaft; for another example, a rotating shaft is rotationally arranged on the rack 1, an eccentric wheel is fixedly arranged at the end of the rotating shaft, and the leg of the gantry 2 is in rotational connection with the eccentric wheel; the above driving assemblies are all applications of prior art, and will not be described here.

[0038] In some embodiments, a guide ring 101 is fixedly arranged on the outer wall of the rack 1, and the leg of the gantry 2 is in sliding connection with the guide ring 101 through a linear bearing.

[0039] In some embodiments, sliding blocks 702 are fixedly arranged at both ends of the lifting plate 7, sliding rails 102 are fixedly arranged on the inner wall of the rack 1, the sliding rails 102 are arranged in one-to-one correspondence with the sliding blocks 702, and the sliding blocks 702 are in sliding way cooperation with the sliding rails 102.

[0040] The working principle of the dust cover heat sealing cutting mechanism is as follows: the device is installed at the discharging end of a bag making machine conveying mechanism, a belt-shaped film tube 15 passes between the lifting plate 7 and the support beam 4, when the passing length reaches a set value (which can be measured by setting an inductor), the conveying mechanism stops conveying the belt-shaped film tube 15, the telescopic end of the telescopic rod 14 is retracted, the telescopic end drives the gantry 2 to descend, then the elastic assembly, the lifting plate 7, the heat sealing knife 3, the swing arm 8 and the movable knife 5 descend, when the belt-shaped film tube 15 is compressed between the heat sealing knife 3 and the support beam 4, the heat sealing knife 3 performs heat sealing on the belt-shaped film tube 15, then the gantry 2 overcomes the resistance of the compression spring 11 and continues to descend, the bottom end of the swing arm 8 swings away from the first end of the movable knife 5, the bottom end of the swing arm 8 drives the second end of the movable knife 5 to swing downward, so that the movable knife 5 and the fixed knife 6 are closed, and the cutting of the belt-shaped film tube 15 is completed; after the cutting is completed, the gantry 2 rises and resets, so that the elastic assembly, the lifting plate 7, the heat sealing knife 3, the swing arm 8 and the cutting knife assembly are reset.

[0041] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between various embodiments can be referred to each other, and the various embodiments can be combined with each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0042] The above embodiments only describe the preferred mode of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical solutions of the utility model made by those skilled in the art without departing from the design spirit of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A dust cap heat seal cutting mechanism characterized by, The utility model relates to a cutting knife assembly and frame (1), the frame (1) on sliding connection has portal frame (2), the beam of portal frame (2) is installed with elastic component, the bottom of elastic component is fixed with lifting plate (7), the bottom of lifting plate (7) is fixed with heat sealing knife (3), the inside horizontal fixed frame of frame (1) is equipped with support beam (4), support beam (4) is located heat sealing knife (3) just below, cutting knife assembly with heat sealing knife (3) the discharge end corresponding arrangement of the portal frame (2) is installed with control component for controlling cutting knife assembly open and close, still include the drive component of installation on frame (1), drive component can drive the portal frame (2) elevating.

2. The dust cap heat seal cutting mechanism of claim 1, wherein: The cutting knife assembly includes a movable knife (5) and a fixed knife (6), the movable knife (5) has a first end and a second end, the first end of the movable knife (5) is rotatably connected with one end of the lifting plate (7), the second end of the movable knife (5) is rotatably connected with the control component, and the fixed knife (6) is horizontally fixed on one side of the support beam (4) close to the movable knife (5).

3. The dust cap heat seal cutting mechanism of claim 2, wherein: The control component includes a swing arm (8), the swing arm (8) is inclinedly arranged, the bottom end of the swing arm (8) is rotatably connected with the second end of the movable knife (5) through a pin shaft (9), the top end of the swing arm (8) is rotatably connected with the portal frame (2), and the top end of the swing arm (8) is close to one end of the first end of the movable knife (5).

4. The dust cap heat seal cutting mechanism of claim 3, wherein: A through groove (701) is formed in the lifting plate (7), the through groove (701) is an arc-shaped notch, the center of the through groove (701) is located on the rotation axis of the first end of the movable knife (5), one end of the pin shaft (9) penetrates through the through groove (701) and is fixedly connected with a limiting block (10), and the limiting block (10) is in sliding contact with the lifting plate (7).

5. The dust cap heat seal cutting mechanism of claim 1, wherein: The elastic components are arranged at intervals along the length direction of the beam of the portal frame (2), each elastic component includes a compression spring (11), a vertical rod (12) and a fixed block (13), the compression spring (11) is sleeved on the vertical rod (12), the compression spring (11) is located between the lifting plate (7) and the portal frame (2), and the top end of the vertical rod (12) penetrates through the beam of the portal frame (2) in a sliding mode and is fixedly connected with the fixed block (13).

6. The dust cap heat seal cutting mechanism of claim 1, wherein: The drive component includes a telescopic rod (14), the telescopic rod (14) is correspondingly arranged with the two legs of the portal frame (2), the telescopic rod (14) is vertically arranged and is fixedly connected with the frame (1), and the telescopic end of the telescopic rod (14) is fixedly connected with the bottom end of the leg.

7. The dust cap heat seal cutting mechanism of claim 1, wherein: A guide ring (101) is fixed on the outer wall of the frame (1), and the legs of the portal frame (2) are slidingly connected with the guide ring (101) through a linear bearing.

8. The dust cap heat seal cutting mechanism of claim 1, wherein: Both ends of the lifting plate (7) are fixed with sliding blocks (702), the inner wall of the rack (1) is fixed with sliding rails (102), the sliding rails (102) and the sliding blocks (702) are one-to-one correspondence, and the sliding blocks (702) and the sliding rails (102) are slideway matched.

9. The dust cap heat seal cutting mechanism of claim 2, wherein: The control assembly comprises a push rod (16), the tail end of the cylinder body of the push rod (16) is rotationally connected with the gantry (2), and the telescopic end of the push rod (16) is rotationally connected with the second end of the movable cutter (5).

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