A bag sealer

Abstract

The application provides a bag sealing machine and relates to the technical field of automatic sealing, which comprises a sealing machine body, a movable chassis fixedly arranged at the bottom of the sealing machine body, four groups of universal wheels fixedly arranged at the bottom of the movable chassis, a lifting electric cylinder fixedly arranged at the top of the movable chassis, a support frame fixedly arranged at the top of the lifting electric cylinder, guide rails slidingly connected between the two sides of the support frame and the movable chassis, a conveying device fixedly arranged at the telescopic end of the lifting electric cylinder, and an air extraction device. The air extraction device provides a movable air extraction function. The transmission motor drives the driven shaft to rotate, drives the two sides of the bevel gear plate and the hexagonal pump blade to rotate, and the sliding pump blade automatically extends and retracts following the interval change of the inner wall of the air extraction bin, thereby generating a continuous variable volume effect. Air is extracted from the air inlet channel and discharged from the air outlet channel, so that automatic air extraction is realized. The automatic effect is good, and the problem that the existing sealing machine cannot extract air during conveying is solved.

Description

Technical Field

[0001] This invention relates to the field of automatic sealing technology, and in particular to a bag sealing machine. Background Technology

[0002] The sealing machine works by using two sets of hot melt strips to melt and bond the opening of the plastic bag together to form a sealed whole. Generally, it is necessary to extract air from the inside of the sealed bag to keep it in a vacuum state, extend the storage time, and improve the storage effect. Currently, a conveying device is mainly used to transport the bag to different working positions for sealing.

[0003] The sealing machines currently in use have the following drawbacks:

[0004] 1. It lacks the function of quickly extracting air during the transportation process and automatically removing the air extraction structure after paralleling the port;

[0005] 2. Lack of a conveying structure that automatically adapts to thickness and maintains the transmission and conveying effect during the conveying process;

[0006] 3. It is inconvenient to adjust the packaging bags to fit different sizes for transportation. Summary of the Invention

[0007] In view of the above, the present invention addresses the shortcomings of the prior art by providing a bag sealing machine.

[0008] This invention provides a bag sealing machine, specifically comprising: a sealing machine body, a movable base frame fixedly mounted at the bottom of the sealing machine body, four sets of universal wheels fixedly mounted at the bottom of the movable base frame; a lifting cylinder fixedly mounted at the top of the movable base frame, a support frame fixedly mounted at the top of the lifting cylinder, and guide rails slidably connected to both sides of the support frame and the movable base frame; a conveying device fixedly mounted at the telescopic end of the lifting cylinder; a strip-shaped through groove opened at the bottom of the sealing machine body, two sets of corner frames fixedly mounted below the through groove, two sets of sealing belt seats mounted on adjacent surfaces of the two sets of corner frames in conjunction with spring rods; a rotating shaft frame fixedly mounted at both ends of the adjacent surfaces of the sealing belt seats on both sides, a synchronous pulley rotatably mounted in the middle of each rotating shaft frame, and a sealing conveyor belt rotatably mounted on the outside of the synchronous pulley on the same side; a movable frame slidably mounted inside the lower part of the sealing machine body in conjunction with guide rails, a connecting device fixedly mounted at the bottom of the movable frame, two sets of sliding air extraction channels slidably mounted at the bottom of the connecting device, the connecting device sliding in the through groove at the bottom of the sealing machine body; and an air extraction device fixedly mounted at the top of the movable frame.

[0009] Optionally, the conveying device is provided with a conveyor belt driven by a motor rotating in the middle, a movable pallet is fixedly installed above the conveyor belt, and a guardrail structure is installed above the movable pallet.

[0010] Optionally, the sealing conveyor belt is located on both sides of the bottom through groove of the sealing machine body, and the two sets of sealing conveyor belts can be attached to each other by spring rods outside the sealing belt seats; a rotating sleeve is rotatably mounted on the top of one side of the rotating shaft frame, and a hexagonal shaft is slidably arranged in the rotating sleeves on both sides; the hexagonal shaft is rotatably arranged inside the sealing machine body, and a motor is arranged inside the sealing machine body to drive the hexagonal shaft; the rotating sleeve and the synchronous pulley are connected by bevel gear transmission.

[0011] Optionally, sealing electric cylinders are fixedly installed on both sides of the bottom through groove of the sealing machine body, and heat sealers are fixedly installed on the telescopic ends of the sealing electric cylinders. The two sets of heat sealers are parallel and the heat sealers are lower than the sealing conveyor belt.

[0012] Optionally, a micro-electric cylinder is fixedly installed at the bottom center of the connecting device; a connecting strip is fixedly installed between the two sets of sliding air extraction channels, and the telescopic end of the micro-electric cylinder is fixed above the connecting strip; when the micro-electric cylinder retracts, the sliding air extraction channel moves to a position higher than the sealing conveyor belt.

[0013] Optionally, the air extraction device has two sets of air extraction chambers in the middle, an air inlet channel in the middle of the two sets of air extraction chambers, and an air vent channel on the front side of each air extraction chamber; the top of the connecting device is connected to the bottom of the air inlet channel; a hexagonal pump blade is sealed and rotated in the middle of each air extraction chamber, and the hexagonal pump blade is eccentrically installed, with the hexagonal pump blades on both sides having symmetrical structures.

[0014] Optionally, each of the hexagonal pump blades is slidably provided with a sliding pump blade, and a sealing strip is fixedly provided at the outer end of each sliding pump blade, with the sealing strip fitting against the inner wall of the air extraction chamber; a spring is fixedly provided between each of the hexagonal pump blades and the sliding pump blade.

[0015] Optionally, each of the sliding pump blades is fixedly provided with a bevel gear disc; the top of the air extraction device is rotatably provided with a driven shaft, and both ends of the driven shaft are provided with bevel gears that mesh with two sets of bevel gear discs; the air extraction device is fixedly installed with a drive motor, and the drive motor and the driven shaft are connected by a belt drive.

[0016] Optionally, the sealing machine body is internally equipped with a drive screw driven by a motor for rotation; a control screw nut is also fixedly installed on the top of the moving frame, and the drive screw is threadedly connected to the control screw nut.

[0017] The beneficial effects are as follows:

[0018] 1. This invention is equipped with an air extraction device, providing a mobile air extraction function. The driven shaft is rotated by a transmission motor, which in turn drives the bevel gear discs and hexagonal pump blades on both sides to rotate. The sliding pump blades automatically extend and retract according to the interval changes of the inner wall of the air extraction chamber, producing a continuous variable volume effect. Air is extracted from the air inlet channel and discharged from the air outlet channel, thus achieving automatic air extraction. Subsequently, the micro-electric cylinder is retracted, and the sliding air extraction channel is retracted using the connecting strip, which allows the sliding air extraction channel to be pulled out of the packaging bag. The automatic effect is good.

[0019] 2. The sealing conveyor belt provides a naturally adaptable conveying function. It can naturally adjust the spacing of the clamped object and automatically reset. The hexagonal shaft drives the rotating sleeve to achieve a combination of sliding and driving effects. During the automatic adjustment of the sealing conveyor belt spacing, the sealing conveyor belt on both sides is driven to ensure that the opening of the bag supported by the sealing conveyor belt is in a closed state.

[0020] 3. The installation of a conveyor device can provide a carrying and conveying effect. The height of the conveyor device can be adjusted according to the size of the packaging bag. The height of the conveyor device can be adjusted by controlling the extension and retraction of the lifting cylinder, which makes it easy to align the top of the filled packaging bag with the sealing position and facilitates the conveying of packaging bags of different sizes. Attached Figure Description

[0021] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of the tilting structure of an embodiment of the present invention is shown;

[0023] Figure 3 A schematic diagram of the driving structure of the hexagonal shaft in an embodiment of the present invention is shown;

[0024] Figure 4 A schematic diagram of the assembly structure of the air extraction device in an embodiment of the present invention is shown;

[0025] Figure 5 A schematic diagram of the assembly structure of the sliding air extraction channel in an embodiment of the present invention is shown;

[0026] Figure 6 A disassembled structural diagram of the air extraction device in an embodiment of the present invention is shown;

[0027] Figure 7 A partial cross-sectional view of the air extraction device according to an embodiment of the present invention is shown;

[0028] Figure 8 A three-dimensional structural schematic diagram of the hexagonal pump blade in an embodiment of the present invention is shown.

[0029] List of reference numerals

[0030] 1. Sealing machine body; 101. Mobile base frame; 102. Lifting electric cylinder; 103. Support frame; 2. Conveying device; 201. Mobile tray; 3. Folding frame; 301. Sealing belt seat; 302. Rotating shaft frame; 303. Synchronous pulley; 304. Sealing conveyor belt; 305. Rotating sleeve; 306. Hexagonal shaft; 4. Sealing electric cylinder; 401. Heat sealer; 5. Mobile frame; 501. Connecting device; 502. Sliding air extraction channel; 503. Connecting strip; 504. Micro electric cylinder; 505. Control screw nut; 6. Air extraction device; 601. Air extraction chamber; 602. Air inlet channel; 603. Air venting channel; 7. Hexagonal pump blade; 701. Sliding pump blade; 702. Sealing strip; 8. Bevel gear disc; 9. Driven shaft; 10. Transmission motor; 11. Drive screw. Detailed Implementation

[0031] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0032] Example 1: Please refer to the accompanying drawings in the instruction manual. Figures 1 to 8 As shown:

[0033] This invention proposes a bag sealing machine, comprising: a sealing machine body 1, a movable base frame 101 fixedly mounted at the bottom of the sealing machine body 1, four sets of universal wheels fixedly mounted at the bottom of the movable base frame 101; a lifting cylinder 102 fixedly mounted at the top of the movable base frame 101, a support frame 103 fixedly mounted at the top of the lifting cylinder 102, and guide rails slidably connected to both sides of the support frame 103 and the movable base frame 101; a conveying device 2 fixedly mounted at the telescopic end of the lifting cylinder 102; a strip-shaped through groove opened at the bottom of the sealing machine body 1, two sets of corner brackets 3 fixedly mounted below the through groove, the adjacent surfaces of the two sets of corner brackets 3 cooperating. The spring rod is equipped with two sets of sealing belt seats 301; a rotating shaft frame 302 is fixedly installed at both ends of the adjacent surfaces of the sealing belt seats 301 on both sides, and a synchronous pulley 303 is rotatably installed in the middle of the rotating shaft frame 302. A sealing conveyor belt 304 is rotatably installed on the outside of the synchronous pulley 303 on the same side; a movable frame 5 is slidably installed inside the lower part of the sealing machine body 1 in conjunction with the guide rail, and a connecting device 501 is fixedly installed at the bottom of the movable frame 5. Two sets of sliding air extraction channels 502 are slidably installed at the bottom of the connecting device 501, and the connecting device 501 slides in the through groove at the bottom of the sealing machine body 1; an air extraction device 6 is fixedly installed at the top of the movable frame 5.

[0034] The conveyor device 2 has a motor-driven conveyor belt rotating in the middle, and a movable pallet 201 is fixedly installed above the conveyor belt. A guardrail structure is installed above the movable pallet 201.

[0035] The sealing conveyor belt 304 is located on both sides of the bottom through groove of the sealing machine body 1. The two sets of sealing conveyor belts 304 can be attached to each other by spring rods outside the sealing belt seat 301. The top of the rotating shaft frame 302 on one side is equipped with a rotating sleeve 305. A hexagonal shaft 306 is slidably arranged in the rotating sleeves 305 on both sides. The hexagonal shaft 306 is rotatably arranged inside the sealing machine body 1, and a motor is set inside the sealing machine body 1 to drive the hexagonal shaft 306. The rotating sleeve 305 is connected to the synchronous pulley 303 by bevel gear transmission.

[0036] In this sealing machine body 1, sealing electric cylinders 4 are fixedly installed on both sides of the bottom through groove. Heat sealers 401 are fixedly installed on the telescopic ends of sealing electric cylinders 4. The two sets of heat sealers 401 are parallel and the heat sealers 401 are lower than the sealing conveyor belt 304.

[0037] Among them, a micro electric cylinder 504 is fixedly installed in the middle of the bottom of the connecting device 501; a connecting strip 503 is fixedly installed between the two sets of sliding air extraction channels 502, and the telescopic end of the micro electric cylinder 504 is fixed above the connecting strip 503; when the micro electric cylinder 504 retracts, the sliding air extraction channel 502 moves to a position higher than the sealing conveyor belt 304.

[0038] The air extraction device 6 has two sets of air extraction chambers 601 in the middle, and an air inlet channel 602 in the middle of the two sets of air extraction chambers 601. An air venting channel 603 is provided on the front side of each air extraction chamber 601. The top of the connecting device 501 is connected to the bottom of the air inlet channel 602. A hexagonal pump blade 7 is sealed and rotated in the middle of each air extraction chamber 601. The hexagonal pump blade 7 is eccentrically installed, and the hexagonal pump blade 7 on both sides is symmetrical in structure.

[0039] Among them, the hexagonal pump blades 7 are all slidably provided with sliding pump blades 701 on the outside, and the outer ends of the sliding pump blades 701 are all fixedly provided with sealing strips 702, which are attached to the inner wall of the air extraction chamber 601; and springs are fixedly provided between the hexagonal pump blades 7 and the sliding pump blades 701.

[0040] The top of each of the sliding pump blades 701 is fixedly provided with a bevel gear disk 8; the top of the air extraction device 6 is rotatably provided with a driven shaft 9, and both ends of the driven shaft 9 are provided with bevel gears that mesh with two sets of bevel gear disks 8; the air extraction device 6 is fixedly installed with a drive motor 10, and the drive motor 10 and the driven shaft 9 are connected by a belt drive.

[0041] The sealing machine body 1 is equipped with a drive screw 11 driven by a motor for internal rotation; the top of the moving frame 5 is also fixedly equipped with a control screw nut 505, and the drive screw 11 is threadedly connected to the control screw nut 505.

[0042] like Figure 1-8As shown, the height of the conveying device 2 can be adjusted according to the size of the packaging bag, and the extension and retraction of the lifting cylinder 102 can be controlled to adjust the height of the conveying device 2, thereby making it easier to align the top of the filled packaging bag with the sealing position.

[0043] Place the sealing bag below the sliding air extraction channel 502, insert the sliding air extraction channel 502 into the bag opening, and then use the motor to drive the hexagonal shaft 306 to rotate. The hexagonal shaft 306 drives the rotating sleeve 305 to rotate, and the rotating sleeve 305, in conjunction with the bevel gear, drives the synchronous pulley 303 to rotate, thereby rotating the sealing conveyor belt 304 to clamp and seal the bag opening.

[0044] During operation, the moving pallet 201 and the sealing conveyor belt 304 move synchronously and at the same speed under the control of the program;

[0045] When the bag opening and the sliding air extraction channel 502 are conveyed to the position in the sealing conveyor belt 304, the sliding air extraction channel 502 will widen, and the sealing conveyor belts 304 on both sides can automatically adapt through springs to keep the bag opening closed.

[0046] At this time, the drive motor 10 is started to drive the driven shaft 9 to rotate, the driven shaft 9 drives the two bevel gear discs 8 to rotate, and the two bevel gear discs 8 rotate synchronously to drive the two sets of hexagonal pump blades 7 to rotate.

[0047] During the rotation of the two sets of hexagonal pump blades 7, the sliding pump blade 701 and the sealing strip 702 rotate synchronously. The sealing strip 702 fits against the inner wall of the air extraction chamber 601 and rotates. The sliding pump blade 701 will also automatically expand and contract with the interval change of the inner wall of the air extraction chamber 601, producing a continuous variable volume effect, drawing air from the air inlet channel 602 and releasing air from the air outlet channel 603. Then, the micro electric cylinder 504 is retracted, and the sliding air extraction channel 502 is retracted by the connecting strip 503, so that the sliding air extraction channel 502 can be pulled out of the packaging bag. Then, the packaging bag is moved to the middle of the two heat sealers 401, and the sealing electric cylinder 4 is used to push the heat sealer 401 to perform the sealing.

[0048] Example 2: Based on Example 1, a sliding inkjet printer is installed at the bottom of the sealing machine body 1, and a corresponding pushing mechanism is installed so that it contacts the packaging bag, thereby printing the code on the packaging bag.

[0049] The specific usage and function of this embodiment: In this invention, when in use, the height of the conveying device 2 can be adjusted according to the size of the packaging bag, and the extension and retraction of the lifting cylinder 102 can be controlled to adjust the height of the conveying device 2, thereby making it easier to align the top of the filled packaging bag to the sealing position.

[0050] Place the sealing bag below the sliding air extraction channel 502, insert the sliding air extraction channel 502 into the bag opening, and then use the motor to drive the hexagonal shaft 306 to rotate. The hexagonal shaft 306 drives the rotating sleeve 305 to rotate, and the rotating sleeve 305, in conjunction with the bevel gear, drives the synchronous pulley 303 to rotate, thereby rotating the sealing conveyor belt 304 to clamp and seal the bag opening.

[0051] When the bag opening and the sliding air extraction channel 502 are conveyed to the sealing conveyor belt 304, the sliding air extraction channel 502 will widen, and the sealing conveyor belts 304 on both sides can automatically adapt through springs to keep the bag opening closed.

[0052] At this time, the drive motor 10 is started to drive the driven shaft 9 to rotate, and the driven shaft 9 drives the two bevel gear discs 8 to rotate. The two bevel gear discs 8 rotate synchronously, driving the two sets of hexagonal pump blades 7 to rotate. During the rotation of the two sets of hexagonal pump blades 7, the sliding pump blade 701 and the sealing strip 702 rotate synchronously. The sealing strip 702 fits against the inner wall of the air extraction chamber 601 and rotates. The sliding pump blade 701 will also automatically expand and contract with the interval change of the inner wall of the air extraction chamber 601, producing a continuous variable volume effect, drawing air from the air inlet channel 602 and discharging air from the air outlet channel 603.

[0053] After the air extraction is completed, retract the micro electric cylinder 504 and use the connecting strip 503 to retract the sliding air extraction channel 502. The sliding air extraction channel 502 can then be pulled out of the packaging bag. Then continue to move the packaging bag to the middle of the heat sealers 401 on both sides. Use the sealing electric cylinder 4 to push the heat sealer 401 to perform the sealing.

[0054] After sealing, reposition all components to repeat the sealing process.

Claims

1. A bag sealing machine, characterized in that, include: A sealing machine body (1) is provided with a movable base frame (101) fixedly installed at the bottom of the sealing machine body (1). Four sets of universal wheels are fixedly installed at the bottom of the movable base frame (101). A lifting electric cylinder (102) is fixedly installed at the top of the movable base frame (101). A support frame (103) is fixedly installed at the top of the lifting electric cylinder (102). The two sides of the support frame (103) are slidably connected to the movable base frame (101) by guide rails. A conveying device (2) is fixedly installed at the telescopic end of the lifting electric cylinder (102). A strip-shaped through groove is opened at the bottom of the sealing machine body (1). Two sets of corner brackets (3) are fixedly installed below the through groove. Two sets of sealing devices are set on the adjacent surfaces of the two sets of corner brackets (3) in conjunction with spring rods. Seat (301); both ends of the adjacent surfaces of the sealing seat (301) on both sides are fixedly provided with a rotating shaft frame (302), and a synchronous pulley (303) is rotatably provided in the middle of the rotating shaft frame (302). A sealing conveyor belt (304) is rotatably provided on the outside of the synchronous pulley (303) on the same side; a movable frame (5) is slidably provided inside the sealing machine body (1) in cooperation with the guide rail. A connecting device (501) is fixedly provided at the bottom of the movable frame (5). Two sets of sliding air extraction channels (502) are slidably provided at the bottom of the connecting device (501). The connecting device (501) slides in the through groove at the bottom of the sealing machine body (1); an air extraction device (6) is fixedly provided at the top of the movable frame (5).

2. The bag sealing machine as described in claim 1, characterized in that, The conveying device (2) has a conveyor belt driven by a motor rotating in the middle, and a movable pallet (201) is fixedly installed above the conveyor belt. A guardrail structure is installed above the movable pallet (201).

3. The bag sealing machine as described in claim 1, characterized in that, The sealing conveyor belt (304) is located on both sides of the bottom through groove of the sealing machine body (1). The two sets of sealing conveyor belts (304) can be attached to each other by the spring rod outside the sealing belt seat (301). The top of the rotating shaft frame (302) on one side is equipped with a rotating sleeve (305), and a hexagonal shaft (306) is slidably arranged in the rotating sleeves (305) on both sides. The hexagonal shaft (306) is rotatably arranged inside the sealing machine body (1), and a motor is set inside the sealing machine body (1) to drive the hexagonal shaft (306). The rotating sleeve (305) is connected to the synchronous pulley (303) by bevel gear transmission.

4. The bag sealing machine as described in claim 1, characterized in that, Sealing cylinders (4) are fixedly installed on both sides of the bottom through groove of the sealing machine body (1). Heat sealers (401) are fixedly installed on the telescopic ends of the sealing cylinders (4). The two sets of heat sealers (401) are parallel and the heat sealers (401) are lower than the sealing conveyor belt (304).

5. The bag sealing machine as described in claim 1, characterized in that, A micro-electric cylinder (504) is fixedly installed at the bottom center of the connecting device (501); a connecting strip (503) is fixedly installed between the two sets of sliding air extraction channels (502), and the telescopic end of the micro-electric cylinder (504) is fixed above the connecting strip (503); when the micro-electric cylinder (504) retracts, the sliding air extraction channel (502) moves to a position higher than the sealing conveyor belt (304).

6. The bag sealing machine as described in claim 1, characterized in that, The air extraction device (6) has two sets of air extraction chambers (601) in the middle, and an air inlet channel (602) is provided in the middle of the two sets of air extraction chambers (601). An air venting channel (603) is provided on the front side of each air extraction chamber (601). The top of the connecting device (501) is connected to the bottom of the air inlet channel (602). A hexagonal pump blade (7) is provided in the middle of each air extraction chamber (601) in a sealed and rotating manner. The hexagonal pump blade (7) is eccentrically installed, and the hexagonal pump blades (7) on both sides are symmetrical in structure.

7. The bag sealing machine as described in claim 6, characterized in that, The hexagonal pump blade (7) is slidably provided with a sliding pump blade (701) on its outside. The outer end of the sliding pump blade (701) is fixedly provided with a sealing strip (702), which fits against the inner wall of the air extraction chamber (601). A spring is fixedly provided between the hexagonal pump blade (7) and the sliding pump blade (701).

8. The bag sealing machine as described in claim 1, characterized in that, The top of each sliding pump blade (701) is fixedly provided with a bevel gear disc (8); the top of the air extraction device (6) is rotatably provided with a driven shaft (9), and both ends of the driven shaft (9) are provided with bevel gears that mesh with two sets of bevel gear discs (8); the air extraction device (6) is fixedly installed with a drive motor (10), and the drive motor (10) and the driven shaft (9) are connected by a belt drive.

9. The bag sealing machine as described in claim 1, characterized in that, The sealing machine body (1) is internally equipped with a drive screw (11) driven by a motor; the top of the moving frame (5) is also fixedly equipped with a control screw nut (505), and the drive screw (11) is threadedly connected to the control screw nut (505).

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