Food packaging bag sealing device

Abstract

The invention provides a food packaging bag sealing device. The food packaging bag sealing device comprises an operation table, a heat sealing assembly and a cleaning mechanism. A food packaging bag is placed on a placing plate, the placing plate moves downwards through the weight, at the moment, a spring is pressed and contracted, the placing plate moves to drive a mounting base to slide through a first transmission assembly, and the mounting base slides to drive two scrapers to scrape away molten materials adhering to the opposite sides of two heat sealing plates; then the heat sealing position of the food packaging bag is placed between the two heat sealing plates for heat sealing operation, after heat sealing is completed, when the food packaging bag is taken down from the containing plate, the weight on the containing plate disappears, the counter-acting force of the spring enables the containing plate to move upwards, the containing plate moves upwards, and then the mounting base can be driven by the first transmission assembly to slide reversely and reset; and therefore, the two sets of scrapers can scrape the molten materials adhered to the opposite sides of the two sets of heat sealing plates again, the molten materials adhered to the heat sealing plates can be conveniently removed, the influence on subsequent sealing operation is avoided, and the sealing effect is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to a food packaging bag sealing device. BACKGROUND

[0002] Food packaging bags are thin film containers that directly contact food and are used to hold and protect food. They can prevent food from being squeezed, hit, shaken, and affected by temperature differences, while keeping food away from oxygen, water vapor, and stains, preventing leakage. Some packages also contain desiccants or deoxidizers to extend shelf life.

[0003] During food production, food packaging bag sealing devices are used to seal food packaging bags after food is placed inside. Existing food packaging bag sealing devices typically use a heat sealing plate to heat the inner layer of the packaging, such as polyethylene or polypropylene, to a molten state, and then apply pressure to make it adhere. After cooling, it solidifies to form a firm seal. However, in long-term continuous operation, the inner layer of the packaging needs to be heated to a high temperature to melt during the heat sealing process. Some of the molten material may stick to the working surface of the heat sealing plate due to intermolecular forces or high temperature viscosity, which can damage the flatness of the heat sealing plate surface, hinder heat transfer, and cause uneven pressure distribution during subsequent sealing, resulting in local sealing, leakage, and uneven melting of the packaging material. Therefore, a food packaging bag sealing device is proposed to address the above technical problems. SUMMARY

[0004] To address the shortcomings of existing technology, the present application provides a food packaging bag sealing device that can easily remove molten material adhering to the heat sealing plate, avoid affecting subsequent sealing operations, and ensure sealing effectiveness.

[0005] A food packaging bag sealing device, characterized by comprising: an operation table; a heat sealing assembly comprising an electric telescopic rod and a heat sealing plate, the heat sealing plate is oppositely provided with two groups, and one of the heat sealing plates is arranged on the support at the top end of the operation table through the electric telescopic rod, and the other heat sealing plate is arranged at the top end of the operation table; and a cleaning mechanism comprising a mounting seat, a scraper, a placement plate, a spring, and a first transmission assembly, the mounting seat is slidably arranged on the top end of the operation table along the length direction of the heat sealing plate, two groups of scrapers are oppositely arranged on the mounting seat, the placement plate is slidably arranged on the operation table in the vertical direction, the spring has two ends respectively abutting against the operation table and the bottom end of the placement plate, and the first transmission assembly connects the placement plate and the mounting seat, and is used for converting the reciprocating sliding of the placement plate into the reciprocating sliding of the mounting seat, so that the two groups of scrapers can be attached to the opposite sides of the two groups of heat sealing plates.

[0006] The food packaging bag sealing device has the beneficial effects that: In use, the food packaging bag is placed on the placement plate, and the placement plate is moved downward by weight. At this time, the spring is compressed and shrunk. The movement of the placement plate drives the mounting seat to slide through the first transmission assembly. The sliding of the mounting seat drives the two groups of scrapers to scrape off the molten material adhered to the opposite sides of the two groups of heat sealing plates. Then, the heat sealing position of the food packaging bag is placed between the two groups of heat sealing plates for heat sealing operation. After the heat sealing is completed, when the food packaging bag is taken off from the placement plate, the weight on the placement plate disappears, and the reaction force of the spring moves the placement plate upward. The upward movement of the placement plate drives the mounting seat to slide reversely and reset through the first transmission assembly, so that the two groups of scrapers can scrape off the molten material adhered to the opposite sides of the two groups of heat sealing plates again, thereby facilitating the removal of the molten material adhered to the heat sealing plates and avoiding the influence on the subsequent sealing operation, and ensuring the sealing effect.

[0007] In one of the embodiments, two groups of guide rods are oppositely arranged on the operation table. The placement plate is slidably sleeved on the two groups of guide rods in the vertical direction. The two groups of guide rods are both sleeved with the spring. The two ends of the spring are respectively abutted against the bottom end of the guide rod and the bottom end of the placement plate.

[0008] In one of the embodiments, the first transmission assembly includes a drive screw, a first gear and a first rack. A first sliding groove is formed in the top end of the operation table. The mounting seat is slidably arranged in the first sliding groove in the length direction of the heat sealing plate. The drive screw is rotatably arranged in the first sliding groove and is threadedly connected with the mounting seat. The first gear is coaxially arranged at one end of the drive screw. The first rack is vertically arranged on the placement plate and is engaged with the first gear.

[0009] In one of the embodiments, the cleaning mechanism further includes a second transmission assembly. The two groups of scrapers are slidably arranged on the mounting seat in the width direction of the heat sealing plate. The second transmission assembly is connected with the operation table and the two groups of scrapers, and is used for converting the sliding of the mounting seat into the reciprocating sliding of the two groups of scrapers.

[0010] In one of the embodiments, the second transmission assembly includes a second gear, a rotating disc and a second rack. The second gear is rotatably arranged on the mounting seat. The second gear is coaxially arranged with the rotating disc at both ends. The two groups of rotating discs are eccentrically arranged with a lever shaft at the away end. The two groups of scrapers are both arranged with a lever groove. The two groups of lever shafts are slidably arranged in the two groups of lever grooves.

[0011] In one embodiment, an auxiliary clamping mechanism is also included, which includes two sets of clamping plates and a third transmission assembly. The two sets of clamping plates are slidably disposed on the top of the placement plate along the length direction of the heat-sealing plate. The third transmission assembly connects the operating table and the two sets of clamping plates to convert the sliding of the placement plate into the relative closing or moving away movement of the two sets of clamping plates.

[0012] In one embodiment, the third transmission assembly includes a bidirectional screw, a third gear, and a third rack; the bidirectional screw is rotatably mounted on the placement plate and its two ends are threadedly connected to two sets of clamping plates respectively; the third gear is coaxially mounted on both ends of the bidirectional screw; two sets of the third rack are arranged opposite to each other on the operating table; and the two sets of third gears mesh with the two sets of third racks respectively.

[0013] In one embodiment, a T-shaped groove is provided at the top of the placement plate, and T-shaped sliders are provided on both sets of clamping plates. The two sets of T-shaped sliders are slidably disposed in the T-shaped groove along the length direction of the heat-sealing plate.

[0014] In one embodiment, a placement slot is provided on one side of the operating table, and a first collection box is inserted into the placement slot. A through slot communicating with the first collection box is provided on the top of the operating table and on both sides of the heat-sealing plate.

[0015] In one embodiment, a second collection box is provided on the mounting base, the second collection box is located between the two sets of scrapers, and a slag discharge port is opened on one side of the second collection box, which is located directly above one of the sets of through grooves. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a three-dimensional structural diagram of a food packaging bag sealing device according to an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows a three-dimensional structure of a food packaging bag sealing device after cross-section. Figure 3 for Figure 1 An exploded view of the first transmission component in a food packaging bag sealing device is shown. Figure 4 for Figure 1 An exploded view of the second transmission component in a food packaging bag sealing device; Figure 5 forFigure 1 An auxiliary clamping mechanism of a food packaging bag sealing device is shown in an exploded view. Figure 6 For Figure 1 An operating table of a food packaging bag sealing device is shown in an exploded view.

[0018] Reference signs: 10, operating table; 101, support; 102, guide rod; 103, first sliding groove; 104, placement groove; 105, first collection box; 106, through groove; 107, second collection box; 1071, residue discharge port; 20, electric telescopic rod; 201, heat sealing plate; 30, mounting seat; 301, scraper; 302, placement plate; 3021, T-shaped sliding groove; 303, spring; 304, pushing groove; 40, drive screw; 401, first gear; 402, first rack; 50, second gear; 501, rotating disc; 502, second rack; 503, pushing shaft; 60, clamping plate; 601, bidirectional screw; 602, third gear; 603, third rack; 604, T-shaped sliding block. DETAILED DESCRIPTION

[0019] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0020] Please refer to Figure 1 A food packaging bag sealing device in an embodiment includes an operating table 10, a heat sealing assembly, and a cleaning mechanism. The heat sealing assembly includes an electric telescopic rod 20 and heat sealing plates 201. Two groups of heat sealing plates 201 are oppositely arranged, and one group of heat sealing plates 201 is arranged on the support 101 at the top end of the operating table 10 and can be lifted and lowered by the electric telescopic rod 20, and the other group of heat sealing plates 201 is arranged at the top end of the operating table 10. The cleaning mechanism includes a mounting seat 30, scrapers 301, a placement plate 302, springs 303, and a first transmission assembly. The mounting seat 30 is slidingly arranged at the top end of the operating table 10 along the length direction of the heat sealing plates 201. Two groups of scrapers 301 are oppositely arranged on the mounting seat 30. The placement plate 302 is slidingly arranged on the operating table 10 in the vertical direction. The two ends of the spring 303 abut against the bottom end of the operating table 10 and the placement plate 302, respectively. The first transmission assembly is connected between the placement plate 302 and the mounting seat 30, and is used to convert the reciprocating sliding of the placement plate 302 into the reciprocating sliding of the mounting seat 30, so that the two groups of scrapers 301 can be attached to the opposite sides of the two groups of heat sealing plates 201.

[0021] In the above embodiment, when in use, the food packaging bag is placed on the placement plate 302, and the placement plate 302 is moved downward by the weight, at this time the spring 303 is compressed and shrunk, the placement plate 302 moves through the first transmission assembly to drive the mounting seat 30 to slide, the sliding of the mounting seat 30 can drive the two groups of scrapers 301 to scrape the molten material adhered to the opposite sides of the two groups of heat sealing plates 201, then the food packaging bag heat sealing position is placed between the two groups of heat sealing plates 201, and then the electric telescopic rod 20 is driven to extend to move the heat sealing plates 201 downward to perform the heat sealing operation, after the heat sealing is completed, the electric telescopic rod 20 is driven to retract to move the heat sealing plates 201 upward to reset, finally, when the food packaging bag is taken off from the placement plate 302, the weight on the placement plate 302 disappears, the reaction force of the spring 303 moves the placement plate 302 upward, the upward movement of the placement plate 302 can drive the mounting seat 30 to slide reversely to reset through the first transmission assembly, so that the two groups of scrapers 301 scrape the molten material adhered to the opposite sides of the two groups of heat sealing plates 201 again, which facilitates the removal of the molten material adhered to the heat sealing plates 201, avoids the influence on the subsequent sealing operation, ensures the sealing effect, secondly, the heat sealing plates 201 are scraped before the heat sealing operation, which can avoid the heat sealing operation to hinder the uniform heat transfer, cause the local molten material in the packaging inner layer to be insufficient, and cause the problem of virtual adhesion and tight sealing, the heat sealing plates 201 are scraped after the heat sealing operation, at this time, the material adhered to the heat sealing plates 201 is still in a semi-molten or softened state, which is easier to clean and remove, avoids the material to be tightly attached to the plate surface after being cooled and solidified, thereby increasing the subsequent cleaning difficulty, and easily scratching the surface of the heat sealing plates 201, and the weight of the food packaging bag is used to drive the mounting seat 30 to move the scraper to clean, without the need of additional power equipment, thereby reducing energy consumption.

[0022] Please refer to Figure 1 and Figure 3 In an embodiment, two groups of guide rods 102 are oppositely arranged on the operation table 10, the placement plate 302 is sleeved on the two groups of guide rods 102 in the vertical direction, springs 303 are sleeved on the two groups of guide rods 102, and the two ends of the spring 303 abut against the bottom end of the guide rod 102 and the bottom end of the placement plate 302 respectively. Through the cooperation of the guide rod 102 and the placement plate 302, the stability of the sliding of the placement plate 302 is ensured, and the guide rod 102 can guide the extension and retraction of the spring 303, thereby improving the service life of the spring 303.

[0023] Please refer to Figures 1 to 3In an embodiment, the first transmission assembly comprises a drive screw 40, a first gear 401 and a first rack 402; the first sliding groove 103 is formed at the top end of the operation table 10, the mounting seat 30 is slidingly arranged in the first sliding groove 103 along the length direction of the heat sealing plate 201, the drive screw 40 is rotatably arranged in the first sliding groove 103 and is threadedly connected with the mounting seat 30, the first gear 401 is coaxially arranged at one end of the drive screw 40, and the first rack 402 is vertically arranged on the placement plate 302 and is engaged with the first gear 401.

[0024] In the above embodiment, when the placement plate 302 moves, the placement plate 302 drives the first rack 402 to move, the first rack 402 moves and is engaged with the first gear 401 to drive the first gear 401 to rotate, the first gear 401 rotates and drives the drive screw 40 to rotate, the drive screw 40 rotates and is threadedly matched with the mounting seat 30 to drive the mounting seat 30 to slide, and the mounting seat 30 is conveniently slid.

[0025] Please refer to Figure 1 , Figure 2 and Figure 4 In an embodiment, the cleaning mechanism further comprises a second transmission assembly; the two groups of scrapers 301 are slidingly arranged on the mounting seat 30 along the width direction of the heat sealing plate 201, and the second transmission assembly is connected with the operation table 10 and the two groups of scrapers 301 and is used for converting the sliding of the mounting seat 30 into the reciprocating sliding of the two groups of scrapers 301.

[0026] Specifically, the second transmission assembly comprises a second gear 50, a rotating disc 501 and a second rack 502; the second gear 50 is rotatably arranged on the mounting seat 30, the rotating disc 501 is coaxially arranged at both ends of the second gear 50, the two groups of rotating discs 501 are eccentrically arranged with a driving shaft 503 at the away end, the two groups of scrapers 301 are each provided with a driving groove 304, and the two groups of driving shafts 503 are slidingly arranged in the two groups of driving grooves 304.

[0027] In the above embodiment, when the mounting seat 30 slides, the mounting seat 30 drives the second gear 50 to move, the second gear 50 moves and is engaged with the second rack 502 to drive the second gear 50 to rotate, the second gear 50 rotates and drives the two groups of rotating discs 501 to rotate, the two groups of rotating discs 501 rotate and drive the two groups of scrapers 301 to reciprocatingly move through the cooperation of the driving shaft 503 and the driving groove 304, so that the two groups of scrapers 301 slide along the length direction of the heat sealing plate 201 and reciprocate along the width direction of the heat sealing plate 201 at the same time, so that the scraper 301 performs a cutting action to remove the molten material adhered on the heat sealing plate 201, and the service life of the scraper 301 is prolonged and the cleaning effect is improved.

[0028] Please refer to Figure 1 and Figure 5In an embodiment, the auxiliary clamping mechanism includes two sets of clamping plates 60 and a third transmission assembly. The top end of the placement plate 302 is slidably provided with the two sets of clamping plates 60 along the length direction of the heat sealing plate 201. The third transmission assembly is connected to the operating table 10 and the two sets of clamping plates 60, and is used to convert the sliding of the placement plate 302 into the relative closing or moving away of the two sets of clamping plates 60.

[0029] Specifically, the third transmission assembly includes a bidirectional screw 601, a third gear 602, and a third rack 603. The bidirectional screw 601 is rotatably arranged on the placement plate 302 and is threadedly connected to the two sets of clamping plates 60 at both ends. The third gear 602 is coaxially arranged at both ends of the bidirectional screw 601. The operating table 10 is provided with two sets of third racks 603 arranged oppositely. The two sets of third gears 602 are respectively engaged with the two sets of third racks 603.

[0030] In the above embodiment, the food packaging bag is placed on the placement plate 302 and located between the two sets of clamping plates 60. When the placement plate 302 moves downward due to the weight, the placement plate 302 drives the third gear 602 to move downward. The third gear 602 is engaged with the third rack 603 to rotate the third gear 602. The rotation of the third gear 602 drives the bidirectional screw 601 to rotate. The bidirectional screw 601 is threadedly engaged with the two sets of clamping plates 60 to drive the two sets of clamping plates 60 to move relatively close to clamp the food packaging bag. Thus, the stability of the food packaging bag placed on the placement plate 302 is improved, and the subsequent sealing operation is facilitated.

[0031] In the above embodiment, the top end of the placement plate 302 is provided with a T-shaped sliding groove 3021. The two sets of clamping plates 60 are respectively provided with T-shaped sliding blocks 604. The two sets of T-shaped sliding blocks 604 are slidably arranged in the T-shaped sliding groove 3021 along the length direction of the heat sealing plate 201. The T-shaped sliding groove 3021 and the T-shaped sliding block 604 cooperate to ensure the stability of the sliding of the clamping plate 60.

[0032] Please refer to Figure 1 and Figure 6 In an embodiment, the operating table 10 is provided with a placement groove 104 on one side. The first collection box 105 is arranged in the placement groove 104. The operating table 10 is provided with a through groove 106 on the top end and at both sides of the heat sealing plate 201. The through groove 106 is in communication with the first collection box 105. The first collection box 105 is arranged to facilitate the collection of the removed molten material, thereby facilitating subsequent processing.

[0033] Further, the mounting base 30 is provided with a second collection box 107, the second collection box 107 is located between the two groups of scrapers 301, and one side of the second collection box 107 is provided with a residue discharge port 1071 located directly above one of the through grooves 106. The second collection box 107 facilitates the collection of molten material falling from the upper scraper 301, avoids the molten material falling onto the lower scraper 301, thereby avoiding the molten material falling on the heat sealing plate 201 during the movement of the lower scraper 301, and the molten material in the second collection box 107 can be cleaned into the first collection box 105 through the residue discharge port 1071, and the second collection box 107 is convenient to clean.

[0034] The specific embodiment of the food packaging bag sealing device is: In use, the food packaging bag is placed on the placement plate 302 and located between the two groups of clamping plates 60. At this time, the placement plate 302 moves downward due to the weight, the spring 303 is compressed and shrunk, the placement plate 302 moves downward and drives the bidirectional screw 601 to rotate through the cooperation of the third gear 602 and the third rack 603, the bidirectional screw 601 rotates and drives the two groups of clamping plates 60 to move relatively close to clamp the food packaging bag, thereby improving the stability of the food packaging bag placed on the placement plate 302, and facilitating the subsequent sealing operation.

[0035] When the placement plate 302 moves downward, the first rack 402 is driven by the placement plate 302 to move downward and engage with the first gear 401 to drive the drive screw 40 to rotate. The drive screw 40 rotates and cooperates with the mounting base 30 in a threaded manner to drive the mounting base 30 to slide. The mounting base 30 slides and drives the second gear 50 to move. The second gear 50 moves and engages with the second rack 502 to drive the second gear 50 to rotate. The second gear 50 rotates and drives the two groups of turntables 501 to rotate. The two groups of turntables 501 rotate and drive the two groups of scrapers 301 to reciprocate through the cooperation of the push shaft 503 and the push groove 304. Thus, the two groups of scrapers 301 slide along the length direction of the heat sealing plate 201 while reciprocating along the width direction of the heat sealing plate 201 to make the scraper 301 cut and remove the molten material adhered on the heat sealing plate 201, thereby prolonging the service life of the scraper 301 and improving the cleaning effect.

[0036] Then, the food packaging bag heat sealing position is placed between the two groups of heat sealing plates 201, and the heat sealing plate 201 is driven to move downward by the extension of the electric telescopic rod 20 to perform heat sealing operation. After heat sealing is completed, the heat sealing plate 201 is driven to move upward and reset by the contraction of the electric telescopic rod 20.

[0037] Finally, when the food packaging bag is taken off from the placing plate 302, the weight on the placing plate 302 disappears, the reaction force of the spring 303 drives the placing plate 302 to move upward, the placing plate 302 moves upward through the cooperation of the third gear 602 and the third rack 603 to drive the bidirectional screw rod 601 to rotate reversely, the bidirectional screw rod 601 drives the two groups of clamping plates 60 to move away from each other to cancel the clamping of the food packaging bag, at the same time, the placing plate 302 drives the first rack 402 to move upward to mesh with the first gear 401 to drive the drive screw rod 40 to rotate reversely, the drive screw rod 40 is screwed with the mounting seat 30 to drive the mounting seat 30 to slide reversely and reset, at this time, the scraper 301 cuts again to remove the molten material adhered to the heat sealing plate 201, which facilitates the removal of the molten material adhered to the heat sealing plate 201, avoids the influence on the subsequent sealing operation, ensures the sealing effect, through the scraping of the heat sealing plate 201 before the heat sealing operation, the heat sealing operation can avoid the problem that the heat is not uniformly transferred, the inner layer material of the package is not fully melted in the local part, the sealing is not firm, and the heat sealing plate 201 is scraped after the heat sealing operation, at this time, the material adhered to the heat sealing plate 201 is still in a semi-molten or softened state, which is easier to clean and remove, avoids the material being tightly attached to the plate surface after being cooled and solidified, thereby increasing the difficulty of subsequent cleaning, and the surface of the heat sealing plate 201 is easy to scratch.

[0038] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; the modification or replacement does not make the essence of the corresponding technical solution deviate from the scope of the technical solutions of the embodiments of the present application, and should be covered in the scope of the claims and the specification of the present application.

Claims

1. A food packaging bag sealing device characterized by comprising: The utility model relates to a heat sealing machine, including: Operation platform (10); Hot seal assembly, including electric telescopic rod (20) and heat seal board (201), two groups of heat seal board (201) are oppositely arranged, and one group of heat seal board (201) is arranged on the support (101) of operation platform (10) top by electric telescopic rod (20) and can be lifted, and another group of heat seal board (201) is arranged on operation platform (10) top;And Cleaning mechanism, including mounting seat (30), scraper (301), placement plate (302), spring (303) and first transmission assembly, mounting seat (30) is slidably arranged on operation platform (10) top along the length direction of heat seal board (201), two groups of scraper (301) are oppositely arranged on mounting seat (30), placement plate (302) can be slidably arranged on operation platform (10) along the vertical direction, the bottom of spring (303) is respectively resisted to operation platform (10) and placement plate (302), first transmission assembly is connected placement plate (302) and mounting seat (30), is used for converting the reciprocating sliding of placement plate (302) into the reciprocating sliding of mounting seat (30), so that two groups of scraper (301) can be attached to the opposite side of two groups of heat seal board (201).

2. A food packaging bag sealing device according to claim 1, wherein Two groups of guide rods (102) are oppositely arranged on operation platform (10), placement plate (302) is slidably sleeved on two groups of guide rods (102) along the vertical direction, spring (303) is sleeved on two groups of guide rods (102), and the bottom of spring (303) is respectively resisted to the bottom of guide rod (102) and the bottom of placement plate (302).

3. A food packaging bag sealing device according to claim 1, wherein First transmission assembly includes drive screw (40), first gear (401) and first rack (402);The first sliding slot (103) is set up on the top of operation platform (10), the mounting seat (30) is slidably arranged in the first sliding slot (103) along the length direction of heat seal board (201), the drive screw (40) is rotatably arranged in the first sliding slot (103) and is threadedly connected with the mounting seat (30), the first gear (401) is coaxially arranged on one end of drive screw (40), and the first rack (402) is vertically arranged on the placement plate (302) and is engaged with the first gear (401).

4. The food packaging bag sealing apparatus according to claim 1, wherein The cleaning mechanism further includes a second transmission assembly; two groups of scraper (301) are slidably arranged on mounting seat (30) along the width direction of heat seal board (201), and the second transmission assembly is connected with operation platform (10) and two groups of scraper (301), for converting the sliding of mounting seat (30) into the reciprocating sliding of two groups of scraper (301).

5. A food packaging bag sealing device according to claim 4, wherein The second transmission assembly comprises a second gear (50), a rotating disc (501) and a second rack (502); the second gear (50) is rotatably arranged on the mounting seat (30), and the rotating disc (501) is coaxially arranged at both ends of the second gear (50); the two groups of rotating discs (501) are eccentrically arranged with a driving shaft (503) at the away end; the two groups of scrapers (301) are provided with a driving groove (304); and the two groups of driving shafts (503) are respectively and slidably arranged in the two groups of driving grooves (304).

6. A food packaging bag sealing device according to claim 1, wherein The auxiliary clamping mechanism comprises two groups of clamping plates (60) and a third transmission assembly, the clamping plates (60) are slidably arranged on the top end of the placement plate (302) along the length direction of the heat sealing plate (201), and the third transmission assembly is connected with the operation table (10) and the two groups of clamping plates (60) to convert the sliding of the placement plate (302) into the relative folding or moving away of the two groups of clamping plates (60).

7. A food packaging bag sealing device according to claim 6, wherein The third transmission assembly comprises a bidirectional screw (601), a third gear (602) and a third rack (603); the bidirectional screw (601) is rotatably arranged on the placement plate (302) and is threadedly connected with the two groups of clamping plates (60) at both ends; the third gear (602) is coaxially arranged at both ends of the bidirectional screw (601); and the operation table (10) is oppositely provided with the two groups of third racks (603), and the two groups of third gears (602) are respectively engaged with the two groups of third racks (603).

8. A food packaging bag sealing device according to claim 6, wherein The top end of the placement plate (302) is provided with a T-shaped sliding groove (3021), and the two groups of clamping plates (60) are respectively provided with a T-shaped sliding block (604); and the two groups of T-shaped sliding blocks (604) are slidably arranged in the T-shaped sliding groove (3021) along the length direction of the heat sealing plate (201).

9. The food packaging bag sealing apparatus according to claim 1, wherein The operation table (10) is provided with a placement groove (104) on one side, and a first collection box (105) is arranged in the placement groove (104); and the operation table (10) is provided with a through groove (106) on the top end and at both sides of the heat sealing plate (201), and the through groove (106) is in communication with the first collection box (105).

10. A food packaging bag sealing apparatus according to claim 9, wherein The mounting seat (30) is provided with a second collection box (107), and the second collection box (107) is located between the two groups of scrapers (301); and the second collection box (107) is provided with a residue discharging port (1071) on one side, and the residue discharging port (1071) is located directly above one of the through grooves (106).

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