Plastic packaging machine with cooling function

Abstract

The present application relates to the technical field of plastic packaging, and particularly relates to a plastic packaging machine with a cooling function, which comprises a machine body provided with a feeding part, an opening feeding part and a sealing part, the feeding part horizontally conveying an electrostatic packaging bag for an inner paperboard; the opening feeding part is composed of an opening assembly, a supporting opening assembly and a feeder, the opening assembly comprises a Teflon-coated upper clamping plate and a polyethylene lower clamping plate, and a silica gel push plate is movably arranged on the Teflon-coated upper clamping plate, and the sealing part is closed by two movable nozzles to the electrostatic packaging bag. The feeding part is arranged in the machine body, and the feeding part drives the loading table to move by two driving sprockets, driven chains and a traction truss, so as to sequentially perform vacuumizing and cold gas filling operations, the sealing part pressed by a hot melt sealing device is cooled by cold gas, so as to avoid curling and tearing of the sealing part of the electrostatic packaging bag, and meanwhile, the solidification and molding of the sealing part of the electrostatic packaging bag are accelerated.

Description

Technical Field

[0001] This invention relates to the field of plastic sealing and packaging technology, and in particular to a plastic sealing and packaging machine with a cooling function. Background Technology

[0002] In the modern packaging field, the combination of plastic bags and sealing machines is an important pairing for improving packaging efficiency and ensuring product quality, providing convenient and reliable packaging support for different scenarios. When using plastic bags to package cardboard, a prominent problem under current conditions is the difficulty in opening and sealing the plastic bags. For example, the packaging bag feeding mechanism and its working method of an automatic plastic packaging machine proposed in application number CN202411032310.1 continuously replenishes the packaging bags above the feeding platform with a vertically moving up-and-down reciprocating motion. Furthermore, it continuously separates the packaging bags during the rising and falling process, preventing the stacked packaging bags from sticking together. However, this method only applies to the packaging bags at a uniform speed, lacking the ability to adjust the state of the packaging bags, making it difficult to develop and utilize the packaging bags effectively. For example, the fully automatic bagging and packing machine proposed in application number CN202021441014.4 integrates automatic opening and sealing of plastic bags, automatic printing of labels, automatic pasting of labels, and automatic conveying of goods. It adopts a pull-out mechanism with symmetrical distribution at both ends, which can be used for packaging bags of different specifications. The brush and roller line device can buffer the impact of falling goods. Although it realizes the opening and sealing operation, the plastic packaging bag itself is thin and soft. It is difficult to open a new plastic bag that is closed using a single pull-out hook, let alone open the opening to the maximum extent. The narrow opening makes it difficult to load goods and makes it easy for goods to fall. In the sealing operation, electric heat fusion technology is mostly used under the current conditions. However, in actual operation, it is easy to cause insufficient sealing or bag deformation due to temperature conditions. Especially in the heating process, if there is no high temperature protection, it is easy to cause damage to the packaging bag structure, which will not only cause air leakage, but also seriously affect the normal use of the packaging bag. Summary of the Invention

[0003] The purpose of this invention is to solve the problem of the difficulty in sealing and packaging plastic bags in the prior art, and to propose a sealing and packaging machine with a cooling function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a plastic sealing and packaging machine with a cooling function, comprising a machine body with a feeding section, an opening feeding section, and a sealing section; the opening feeding section consists of an opening assembly, a mouth-supporting assembly, and a feeder; the opening assembly includes a Teflon-coated upper clamping plate, a polyethylene lower clamping plate, and a silicone push plate; the Teflon-coated upper clamping plate, the polyethylene lower clamping plate, and the silicone push plate open the opening of the electrostatic packaging bag; the mouth-supporting assembly includes four support rollers; the four support rollers open the opening of the electrostatic packaging bag to a fully open state; the feeder fills the fully open electrostatic packaging bag with cardboard; the sealing section includes two movable nozzles and a heat-melt sealer; each of the two movable nozzles is fixedly connected to a telescopic hose, and the telescopic hose is connected to a vacuum extraction pipe and a cold air supply pipe; the two movable nozzles close the electrostatic packaging bag; the two movable nozzles first extract air from the electrostatic packaging bag, and then replenish cold air into the electrostatic packaging bag; the heat-melt sealer then completely seals the opening of the electrostatic packaging bag.

[0005] Preferably, the machine body is a square frame structure, and the feeding part is arranged in a slot-shaped structure in the machine body. The feeding part includes a loading platform that moves counterclockwise along the slot-shaped structure.

[0006] Preferably, a first bracket and a second bracket are provided on the rear side of the machine body, the first bracket is used to provide an open feeding section, and the second bracket is used to provide a sealing section.

[0007] Preferably, the opening assembly is movably disposed at the front end of the first bracket, and the opening assembly includes a Y-shaped hanger that is slidably mounted on the first bracket and moves back and forth; the Teflon-coated upper clamping plate and the polyethylene lower clamping plate are symmetrically distributed vertically, and the silicone push plate moves obliquely along the Teflon-coated upper clamping plate.

[0008] Preferably, the support assembly is movably disposed at the middle position of the first bracket, and the support assembly includes an adjusting member that is slidably installed on the first bracket and can be vertically raised and lowered and extended and retracted in the front and back direction, and a long frame is fixedly connected to the adjusting member.

[0009] Preferably, the feeder includes a discharge port opened in the first bracket corresponding to the long frame, and a pusher turntable that extends movably into the discharge port is rotatably installed in the first bracket.

[0010] Preferably, only one piece of cardboard passes through the discharge port at a time.

[0011] Preferably, the sealing part includes a T-shaped carrier that is slidably installed at the rear end of the second bracket, and the T-shaped carrier is displaced in a forward and backward direction, with the two movable nozzles symmetrically arranged on the left and right ends of the T-shaped carrier.

[0012] Preferably, a first one-way valve and a second one-way valve are respectively provided on the vacuum extraction pipe and the cold air supply pipe.

[0013] Preferably, the hot melt sealer is located in front of the two moving nozzles.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention sets up a feeding section in the machine body, and uses two drive sprockets, driven chains and traction trusses to drive the material platform to move, so that the anti-static packaging bag can move its position according to the opening and packaging needs. 2. The present invention sets up an opening assembly, a mouth-supporting assembly and a feeder that operate sequentially on the first support of the machine body. The anti-static packaging bag is initially clamped by the Teflon-coated upper clamping plate and the polyethylene lower clamping plate that move in opposite directions. Then, the upper wall of the anti-static packaging bag is squeezed by the inclined silicone pusher plate to facilitate the entry of the support roller in the mouth-supporting assembly. Then, the four support rollers are controlled to move radially to open the anti-static packaging bag to a fully open state, so that the feeder can fill the anti-static packaging bag with cardboard. 3. The present invention has a sealing part on the second support of the machine body. The electrostatic packaging bag is pulled to a closed state by two moving nozzles, so as to facilitate vacuuming and cold air filling operations. The cold air is used to cool the sealing part pressed by the hot melt sealer at high temperature, so as to avoid the sealing part of the electrostatic packaging bag curling and tearing, and at the same time accelerate the solidification and forming of the sealing part of the electrostatic packaging bag. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0016] Figure 2 This is a bottom view of a plastic sealing and packaging machine with a cooling function proposed in this invention;

[0017] Figure 3 This is a schematic diagram of the body and feeding section of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0018] Figure 4 This is a schematic diagram of the first support and the open feeding section of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0019] Figure 5 This is a cross-sectional view of the first support and the open feeding section of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0020] Figure 6 This is a schematic diagram of the opening assembly structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0021] Figure 7This is a schematic diagram of the Teflon-coated upper clamping plate structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0022] Figure 8 This is a cross-sectional view of the opening assembly structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0023] Figure 9 This is a schematic diagram of the support assembly structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0024] Figure 10 This is a schematic diagram of the sealing section structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0025] Figure 11 This is a cross-sectional view of the sealing section structure of a plastic sealing and packaging machine with cooling function proposed in this invention;

[0026] Figure 12 This is a schematic diagram illustrating the state changes of a packaged bag carrying static electricity.

[0027] In the diagram: 1. Machine body; 2. First support; 3. Second support; 4. Feeding section; 41. Drive sprocket; 42. Driven chain; 43. Moving block; 44. Guide elongated hole; 45. Traction truss; 46. Loading platform; 5. Opening feeding section; 51. Opening assembly; 511. Y-shaped hanger; 512. Diamond turntable; 513. First connecting rod; 514. Teflon-coated upper clamping plate; 5141. First horizontal plate; 5142. Angled connecting plate; 5143. Second horizontal plate; 515. Polyethylene lower clamping plate; 516. Right-angle piston tube; 517. Driving piston; 518. Driven piston 519. Plug head pull rod; 5110. Moving slider; 52. Silicone push plate; 52. Support assembly; 521. Adjusting component; 522. Long frame; 523. Drive gear; 524. Driven rack; 525. Radial elongated hole; 526. Driven slider; 527. Second connecting rod; 528. Support roller; 53. Feeder; 531. Discharge port; 532. Pushing turntable; 6. Sealing part; 61. T-shaped carrier; 62. Deflecting swing arm; 63. Moving nozzle; 64. Third connecting rod; 65. Telescopic hose; 66. Vacuum extraction pipe; 67. Cold air supply pipe; 68. Hot melt sealer. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Reference Figures 1-12A plastic sealing and packaging machine with a cooling function includes a body 1 equipped with a feeding section 4, an open feeding section 5, and a sealing section 6. In some embodiments, the feeding section 4 is prior art, i.e., conveying electrostatically charged packaging tape picked up and placed onto it by a robotic arm; for example, its output structure is a material carrier 46, see the attached specification. Figure 3 The material platform 46 is driven by a drive sprocket 41, a driven chain 42, a moving block 43, a guide hole 44, and a traction truss 45. Specifically, two drive sprockets 41 are rotatably mounted at the left and right ends of the machine body 1. The driven chain 42 is mounted on the two drive sprockets 41, and a traction bolt is fixedly connected to the moving block 43. The traction truss 45 is slidably mounted in the guide hole 44, and has a traction hole for the movable traction bolt. The guide hole 44 is located on the machine body 1 to guide and limit the movement of the traction truss 45. This means that the drive sprocket 41 drives the driven chain 42, which in turn drives the moving block 43 located on one link of the driven chain 42 to move periodically. Simultaneously, because the traction truss 45 guides and limits the movement of the moving block 43, the material platform 46 can support the movement of the electrostatically charged packaging bags.

[0030] It should be added that, to facilitate the placement of anti-static packaging bags on the loading platform 46 and the handling and sealing of anti-static packaging bags with cardboard, robotic arms are installed on both the front and right sides of the machine body 1. The robotic arms at the front position transport new anti-static packaging bags to the feeding section 4, as shown in the attached instruction manual. Figure 12 State (a) in the middle. In the right position, the robot arm feeds the electrostatic packaging bag with the cardboard inside and sealed, and the counterclockwise rotation of the feeding unit 4 completes the packaging of the cardboard with the electrostatic packaging bag.

[0031] Please refer to the instruction manual for details. Figure 1 The loading platform 46 moves counterclockwise along the slotted structure to perform a streamlined operation of opening, filling, and sealing the electrostatically charged packaging bags. Based on the existing feeding structure, when the electrostatically charged packaging belt moves to the position of the first support 2, the opening operation is performed. The improvement of the opening operation compared with the existing technology is that it uses a combination of electrostatic adsorption and clamping push to replace the suction cup adsorption method in the existing technology, which has the effect of precise control of the opening of the electrostatically charged packaging bag quickly and stably.

[0032] In some implementations, the combination of electrostatic adsorption and clamping / pushing is achieved through a two-step process: the first step is opening the opening; the second step is shaping the opening. This is accomplished by the opening feeding unit 5, which consists of an opening assembly 51, a opening support assembly 52, and a feeder 53.

[0033] The opening is achieved through an opening assembly 51, which is movably positioned at the front end of the first support 2. The opening assembly 51 includes a Y-shaped hanger 511, a diamond-shaped turntable 512, a Teflon-coated upper clamping plate 514, a polyethylene lower clamping plate 515, a right-angle piston tube 516, an active piston 517, a driven piston round-head pull rod 518, a moving slider 519, and a silicone push plate 5110. The opening feeding part 5 opens the opening of the electrostatic packaging bag through the Teflon-coated upper clamping plate 514, the polyethylene lower clamping plate 515, and the silicone push plate 5110. The Y-shaped hanger 511 is slidably mounted on the first support 2 and moves back and forth. The first support 2 is equipped with a first cylinder for driving the Y-shaped hanger 511 to move, so that the Y-shaped hanger 511 can drive the opening assembly 51 to adjust its position, providing spatial convenience for feeding the electrostatic packaging bag and avoiding positional interference.

[0034] The rhomboid turntable 512 is rotatably mounted on the Y-shaped hanger 511, and the rhomboid turntable 512 is connected by a pin to two first connecting rods 513 that are respectively movably connected to the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515. The Y-shaped hanger 511 is equipped with a second motor for driving the rhomboid turntable 512. The position difference during the deflection of the end corner of the rhomboid turntable 512 is used to traction and support the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515.

[0035] The Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515 are symmetrically distributed vertically. Both the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515 are vertically slidably installed in the Y-shaped hanger 511. The Teflon-coated upper clamping plate 514 is composed of a first horizontal plate 5141, an oblique connecting plate 5142 and a second horizontal plate 5143 connected in sequence to form a stepped structure. It should be noted that the polyethylene lower clamping plate 515 has an electrostatic adsorption effect on the electrostatically charged packaging bag, so it can initially fix the lower wall of the electrostatically charged packaging bag. The Teflon-coated upper clamping plate 514 does not have an electrostatic adsorption effect and has a smooth surface, which can prevent scratching the electrostatically charged packaging bag.

[0036] The right-angle piston tube 516 is fixedly installed on the first horizontal plate 5141 in the Teflon-coated upper clamping plate 514. During the process of the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515 moving towards each other, the active piston 517 and the driven piston round head pull rod 518 move relative to each other to facilitate the traction drive of the silicone push plate 5110.

[0037] The active piston 517 is fixedly connected to the lower polyethylene clamping plate 515, and the active piston 517 is movably fitted into the lower opening of the right-angle piston tube 516, while the driven piston round head pull rod 518 is movably fitted into the upper opening of the right-angle piston tube 516.

[0038] The movable slider 519 is horizontally mounted in the second horizontal plate 5143.

[0039] The silicone push plate 5110 moves obliquely along the Teflon-coated upper clamping plate 514. The silicone push plate 5110 is vertically slidably fitted into the movable slider 519, and the middle end of the silicone push plate 5110 is obliquely slidably fitted into the oblique connecting plate 5142. See the attached instruction manual for details. Figure 6 -Appendix Figure 8 During the process of the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515 moving towards each other, the silicone pusher plate 5110 makes fixed contact with the upper wall of the electrostatic packaging bag and presses against each other on both sides, so that the upper wall of the electrostatic packaging bag forms as shown in the attached instruction manual. Figure 12 In the middle (b) state, the support roller 528 is positioned to enter the electrostatic packaging bag.

[0040] The mouth-supporting shaping is performed by the mouth-supporting assembly 52, which is movably positioned at the middle of the first support 2. The mouth-supporting assembly 52 includes an adjusting member 521, a long frame 522, a drive gear 523, a driven rack 524, a radial elongated hole 525, a driven slider 526, and a support roller 528. The opening feeding part 5 fills the cardboard into the fully open, electrostatically charged packaging bag through the feeder 53. The adjusting member 521 is slidably mounted on the first support 2, and the adjusting member 521 moves vertically up and down and extends and retracts along the first support 2. The position of the long frame 522 can be adjusted vertically and horizontally through the adjusting member 521 to perform staggered operation with the opening assembly 51. As this is an existing technical means in the field of this technology, it will not be described in detail.

[0041] The long frame 522 is fixedly connected to the adjusting component 521. The drive gear 523 is rotatably mounted in the long frame 522. The long frame 522 facilitates the setting of four sets of circumferentially equidistant support rollers 528, and also provides space for filling cardboard into the anti-static packaging bag, ensuring that the cardboard can be filled into the anti-static packaging bag through the long frame 522. A third motor for driving the drive gear 523 to rotate is provided on the long frame 522.

[0042] There are two driven racks 524, which are symmetrically slidably mounted on the long frame 522 about the center of the drive gear 523. By driving the two driven racks 524 to move in opposite directions, the driven slider 526, on which the support rollers 528 are mounted, expands radially. The support rollers 528, which are fitted at the four corners of the anti-static packaging bag, can expand the anti-static packaging bag to the position shown in the attached instruction manual. Figure 12 The fully open state shown in state (c).

[0043] The radial elongated holes 525 are inclinedly opened at the four end corners of the long frame 522. The driven slider 526 is slidably installed in the radial elongated holes 525, and the driven slider 526 and the driven rack 524 are connected by a second connecting rod 527 through a pin.

[0044] There are four support rollers 528, which are fixedly installed on four driven sliders 526 respectively. The opening feeding part 5 opens the electrostatic packaging bag to a fully open state through the four support rollers 528.

[0045] The feeder 53 includes a discharge port 531 opened in the first support 2 corresponding to the long frame 522. A pusher turntable 532 is rotatably installed in the first support 2 and extends to the discharge port 531. Only one cardboard can pass through the discharge port 531 at a time. It should be noted that a storage cavity is vertically opened in the first support 2, in which multiple cardboards are vertically stacked. The rotating pusher turntable 532 pushes only one cardboard through the discharge port 531 at a time, and under the continuous pushing action, it passes through the long frame 522 and enters the fully open electrostatic packaging bag. The loading quantity can be set according to the specifications and dimensions of the electrostatic packaging bag and the cardboard.

[0046] The sealing part 6 includes a T-shaped carrier 61, a deflection lever 62, a moving nozzle 63, a telescopic hose 65, a vacuum extraction pipe 66, a cold air supply pipe 67, and a heat-sealing device 68. The T-shaped carrier 61 is slidably installed at the rear end of the second bracket 3, and the T-shaped carrier 61 moves back and forth. The second bracket 3 is equipped with a third motor for driving the T-shaped carrier 61, so as to drive the position of the T-shaped carrier 61, so that the moving nozzle 63 can be extended and retracted in the opening of the electrostatic packaging bag.

[0047] The deflection lever 62 is rotatably mounted on the T-shaped carrier 61, and the T-shaped carrier 61 is equipped with a fourth motor for driving the deflection lever 62 to rotate.

[0048] There are two movable nozzles 63, which are symmetrically arranged on the left and right ends of the T-shaped frame 61. A third connecting rod 64 is pin-connected between the movable nozzles 63 and the end of the deflection swing rod 62.

[0049] The telescopic hose 65 is fixedly connected to two movable nozzles 63. The movable nozzles 63 have a flat structure to reduce the opening width of the static-contaminated packaging bag.

[0050] A vacuum extraction pipe 66 is fixedly connected to a telescopic flexible hose 65, and a vacuum pump is connected to the vacuum extraction pipe 66. The vacuum extraction pipe 66 first extracts air from the electrostatically charged packaging bag through two movable nozzles 63. A cold air supply pipe 67 is fixedly connected to the telescopic flexible hose 65, and a cold air tank is connected to the cold air supply pipe 67. The cold air supply pipe 67 then replenishes the electrostatically charged packaging bag with cold air through the two movable nozzles 63. It should be noted that most of the air in the electrostatically charged packaging bag is extracted by the vacuum extraction pipe 66, and then low-temperature nitrogen gas with a temperature of 3-18℃ is replenished to the electrostatically charged packaging bag through the cold air supply pipe 67 to facilitate the cooling treatment of the electrostatically charged packaging bag.

[0051] The hot melt sealer 68 is movably installed on the second bracket 3. The sealing part 6 is then completely sealed by the hot melt sealer 68 to seal the opening of the electrostatic packaging bag. The low-temperature nitrogen gas in the electrostatic packaging bag can cool down the seal formed by the hot melt sealer 68, so that the sealing part can quickly solidify and form, thus avoiding air leakage accidents of the electrostatic packaging bag.

[0052] The sealing part 6 closes the electrostatically charged packaging bag via two moving nozzles 63, ensuring that, as per the instruction manual... Figure 12 In state (d), the electrostatic packaging bag can only be evacuated and supplied with air through two moving nozzles 63.

[0053] The machine body 1 has a square frame structure, and the feeding part 4 is set in the machine body 1 in the form of a slot. The periodic operation of the feeding part 4 is used to realize the continuous loading and unloading of electrostatic packaging bags.

[0054] The vacuum extraction pipe 66 and the cold air supply pipe 67 are respectively equipped with a first one-way valve and a second one-way valve, so that the air inside the static-electrostatic packaging bag can only be discharged through the vacuum extraction pipe 66, while the cold air can only enter the static-electrostatic packaging bag through the cold air supply pipe 67.

[0055] The heat sealer 68 is located in front of the two movable nozzles 63 to facilitate the removal of the movable nozzles 63 from the electrostatically charged packaging bag after complete sealing.

[0056] It should be noted that the specific model and specifications of the hot melt sealer 68 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated here.

[0057] The functional principle of this invention can be explained by the following operation: Two drive sprockets 41 control the rotation of the driven chain 42, which in turn drives the moving block 43 to rotate. Simultaneously, a traction truss 45 guides and limits the moving block 43, allowing the loading platform 46 to move within the machine body 1. The loading platform 46 drives the closed mechanism (as shown in the attached manual). Figure 12In state (a), the electrostatic packaging bag is moved to position 2 of the first support. The Y-shaped hanger 511 positions the electrostatic packaging bag between the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515. The diamond-shaped turntable 512 is rotated, and the first connecting rod 513 pulls the Teflon-coated upper clamping plate 514 and the polyethylene lower clamping plate 515, causing them to move towards each other. The polyethylene lower clamping plate 515 initially adsorbs the lower wall of the electrostatic packaging bag. The upward-moving polyethylene lower clamping plate 515 drives the active piston 517 to retract into the right-angle piston tube 516, causing the driven piston round-head pull rod 518 to extend outward from the right-angle piston tube 516. The driven piston round-head pull rod 518 drives the silicone push plate 5110 to move horizontally along the sliding slider 519, while simultaneously tilting downward along the inclined connecting plate 5142, so that the silicone push plate 5110 presses the upper wall of the electrostatic packaging bag towards each other as shown in the attached instruction manual. Figure 12 The (b) state display shows the opened state; the adjusting member 521 moves the long frame 522 until the support roller 528 enters the opening of the anti-static packaging bag, the opening assembly 51 stops, the control drive gear 523 rotates, causing the two driven racks 524 to move in opposite directions, which in turn drives the driven slider 526 to move radially through the second connecting rod 527, and the support roller 528 opens the anti-static packaging bag to the position shown in the attached instruction manual. Figure 12 The middle (c) state shows the fully open state; control the pusher turntable 532 to rotate, pushing one piece of cardboard each time through the discharge port 531 and the long frame 522 into the fully open electrostatic packaging bag, and the mouth-holding assembly 52 stops; the feeding part 4 moves the electrostatic packaging bag containing the cardboard to the position of the second bracket 3, and drives the two moving nozzles 63 into the opening of the electrostatic packaging bag through the T-shaped carrier 61, and controls the deflection swing rod 62 to deflect, so that the two moving nozzles 63 move in opposite directions to close the opening of the electrostatic packaging bag, as shown in the instruction manual. Figure 12 In state (d), air is extracted from the electrostatically charged packaging bag through the vacuum extraction pipe 66 and the telescopic hose 65, and then cold air is injected into the electrostatically charged packaging bag through the cold air supply pipe 67 and the telescopic hose 65. Finally, the heat-sealing device 68 is controlled to heat and compress the electrostatically charged packaging bag to form the shape shown in the attached instruction manual. Figure 12 The (e) state in the middle.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A plastic sealing and packaging machine with a cooling function, comprising a body (1) having a feeding section (4), an open feeding section (5), and a sealing section (6), characterized in that: The opening feeding section (5) consists of an opening assembly (51), a mouth-supporting assembly (52), and a feeder (53). The opening assembly (51) includes a Teflon-coated upper clamping plate (514), a polyethylene lower clamping plate (515), and a silicone pusher plate (5110). The Teflon-coated upper clamping plate (514), the polyethylene lower clamping plate (515), and the silicone pusher plate (5110) open the opening of the electrostatic packaging bag. The mouth-supporting assembly (52) includes four support rollers (528). The four support rollers (528) open the opening of the electrostatic packaging bag to a fully open state. The feeder (53) feeds the fully open electrostatic packaging bag... The bag is filled with cardboard; the sealing part (6) includes two movable nozzles (63), each of which is fixedly connected to a telescopic hose (65) and a heat-melting sealer (68), and the telescopic hose (65) is connected to a vacuum extraction pipe (66) and a cold air supply pipe (67). The sealing part (6) closes the opening of the electrostatic packaging bag through the two movable nozzles (63). The two movable nozzles (63) first extract the air from the electrostatic packaging bag, and then the two movable nozzles (63) replenish the electrostatic packaging bag with cold air. The heat-melting sealer (68) then completely seals the opening of the electrostatic packaging bag.

2. The plastic sealing and packaging machine with cooling function according to claim 1, characterized in that, The machine body (1) is a square frame structure, and the feeding part (4) is arranged in the machine body (1) in a slotted structure. The feeding part (4) includes a loading platform (46) that moves counterclockwise along the slotted structure.

3. A plastic sealing and packaging machine with cooling function according to claim 2, characterized in that, The machine body (1) is provided with a first bracket (2) and a second bracket (3) on the rear side. The first bracket (2) is used to set the opening feeding part (5), and the second bracket (3) is used to set the sealing part (6).

4. A plastic sealing and packaging machine with cooling function according to claim 3, characterized in that, The opening assembly (51) is movably disposed at the front end of the first bracket (2), and the opening assembly (51) includes a Y-shaped hanger (511) that is slidably installed on the first bracket (2) and moves back and forth; the Teflon-coated upper clamping plate (514) and the polyethylene lower clamping plate (515) are symmetrically distributed vertically, and the silicone push plate (5110) moves obliquely along the Teflon-coated upper clamping plate (514).

5. A plastic sealing and packaging machine with cooling function according to claim 4, characterized in that, The support assembly (52) is movably disposed at the middle position of the first bracket (2), and the support assembly (52) includes an adjusting member (521) that is slidably installed on the first bracket (2) and can be vertically raised and lowered and extended and retracted in the front and back direction. A long frame (522) is fixedly connected to the adjusting member (521).

6. A plastic sealing and packaging machine with cooling function according to claim 5, characterized in that, The feeder (53) includes a discharge port (531) opened in the first bracket (2) corresponding to the long frame (522), and a pusher turntable (532) is rotatably installed in the first bracket (2) and extends to the discharge port (531).

7. A plastic sealing and packaging machine with a cooling function according to claim 6, characterized in that, The discharge port (531) allows only one cardboard piece to pass through at a time.

8. A plastic sealing and packaging machine with cooling function according to claim 1, characterized in that, The sealing part (6) includes a T-shaped carrier (61) that is slidably installed at the rear end of the second bracket (3), and the T-shaped carrier (61) moves forward and backward. The two movable nozzles (63) are symmetrically arranged on the left and right ends of the T-shaped carrier (61).

9. A plastic sealing and packaging machine with cooling function according to claim 8, characterized in that, The vacuum extraction pipe (66) and the cold air supply pipe (67) are respectively equipped with a first one-way valve and a second one-way valve.

10. A plastic sealing and packaging machine with a cooling function according to claim 9, characterized in that, The hot melt sealer (68) is located in front of the two moving nozzles (63).

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