Food packaging film sealing machine

Abstract

The invention discloses a food packaging film sealing machine, and relates to the technical field of film sealing machines, the food packaging film sealing machine comprises a film sealing rack, the top of the film sealing rack is provided with a belt conveying rack, the top of the inner side of the film sealing rack is fixedly connected with two sets of suspension brackets, and the inner side of each set of suspension bracket is rotationally connected with a fixed roller; and a packaging film is wound between the two fixed rollers. According to the food packaging box, through cooperation of parts such as the gas outlet channel, inert gas is input into the gas outlet channel from the hose and then blown out of the gas outlet of the gas outlet channel, water stains and other stains on the surface of the food packaging box are removed, and the clean surface is beneficial to tight attachment between the packaging film and the food packaging box; the purging of the inert gas ensures that no impurity interference exists in the packaging area, so that the heat sealing head can uniformly and effectively heat and press the packaging film, and the sealing performance and firmness of packaging are improved.

Description

Technical Field

[0001] The invention relates to the technical field of film sealing machines, in particular to a food packaging film sealing machine. Background Art

[0002] Food refers to all kinds of finished products and raw materials for human consumption or drinking, as well as items that are traditionally both food and Chinese medicinal materials, but does not include items for therapeutic purposes. The definition of food is: substances that can be eaten or drunk by humans, including processed foods, semi-finished products and unprocessed foods, excluding tobacco or substances that are only used as medicines. When packaging food, you need to use a professional food packaging and sealing machine.

[0003] The existing food packaging film sealing machine places the food on a belt conveyor frame and then seals it when it is transported to a film pressing device. However, when the food containing liquid is being transported, the liquid is likely to splash out or other stains may adhere to the edge of the food packaging box. This results in the film not being able to be completely attached to the surface of the food packaging box during sealing, greatly reducing the sealing performance of the food packaging. For this reason, we provide a food packaging film sealing machine to solve the above problems. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems existing in the existing food packaging film sealing machine, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a food packaging film sealing machine, which is used to solve the problem that when food containing liquid is being transported, the liquid is likely to splash out or other stains are attached to the edge of the food packaging box, which results in the film not being able to be completely attached to the surface of the food packaging box during sealing, greatly reducing the sealing performance of the food packaging.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a food packaging film sealing machine, which includes: a film sealing frame, a belt conveyor frame is installed on the top of the film sealing frame, two groups of suspension frames are fixedly connected to the top of the inner side of the film sealing frame, and the inner side of each group of the suspension frames is rotatably connected to a fixed roller, and a packaging film is rolled up between the two fixed rollers; a film pressing mechanism is arranged on the top of the belt conveyor frame, and is used to press the packaging film on the surface of the food packaging box; a mobile controller is located on one side of the belt conveyor frame, and is used to drive the film pressing mechanism to move; an auxiliary unit is located above the belt conveyor frame, and is used to cooperate with the film pressing mechanism to flatten the two ends of the film and cover the surface of the food packaging box.

[0008] As a preferred solution of the food packaging and sealing machine described in the present invention, the mobile controller includes a fixed frame fixedly connected to one side of the belt conveyor frame, one end of the fixed frame is fixedly connected to a driving motor, the execution end of the driving motor passes through the fixed frame and is fixedly connected to a screw rod, the outer wall of the screw rod is threadedly connected to a slider, the top of the slider is fixedly connected to a rectangular connecting rod, the bottom of the rectangular connecting rod is fixedly connected to a second rectangular rod, and one side of the second rectangular rod is fixedly connected to two plug rods.

[0009] As a preferred embodiment of the food packaging film sealing machine described in the present invention, the film pressing mechanism includes two fixed rods fixedly connected to the bottom of the second rectangular rod, the bottoms of the two fixed rods are fixedly connected with connecting seats, a connecting roller is rotatably connected between the two connecting seats through a rotating shaft, and an auxiliary component for rolling the edge of the packaging film is provided on one side of the connecting seat.

[0010] As a preferred embodiment of the food packaging and sealing machine described in the present invention, the auxiliary component includes two fixed seats fixedly connected to one side of the connecting seat, the inner sides of the two fixed seats are rotatably connected with a fixed connecting block, one side of the fixed connecting block is fixedly connected with an end connecting rod, and one end of the end connecting rod passes through the outside of the fixed seat and is rotatably connected to the fixed seat, a torsion spring is installed between the end connecting rod and the fixed seat, and the end of the fixed connecting block is fixedly connected with a side pressure roller.

[0011] As a preferred embodiment of the food packaging and sealing machine described in the present invention, the auxiliary component also includes an auxiliary connecting rod fixedly connected to one side of the fixed rod, the inner side of the auxiliary connecting rod is fixedly connected to an air outlet channel, the top of the air outlet channel is rotatably connected to an auxiliary roller through a rotating shaft, the air inlet of the air outlet channel is installed with a hose, the side wall of the second rectangular rod is installed with an air pump, and one end of the hose is connected to the air outlet of the air pump.

[0012] As a preferred embodiment of the food packaging and sealing machine of the food packaging and sealing machine described in the present invention, the auxiliary unit includes a first rectangular rod arranged on one side of the second rectangular rod, a through hole matching the insertion rod is opened on the inner side of the first rectangular rod, and one end of the insertion rod moves out from the inside of the through hole, and the first rectangular rod is fixedly connected to two limit frames on the side away from the second rectangular rod, and the inner sides of the two limit frames are slidably connected with an insertion block, one side of the insertion block is fixedly connected to a columnar connecting rod, one end of the columnar connecting rod is fixedly connected to an abutting insertion block, a retention groove is opened on the top of the first rectangular rod, and a first spring is installed between the insertion block and the retention groove, second abutting blocks are fixedly connected on both sides of the second rectangular rod, and a first slot matching the abutting insertion block is opened on the top of the second abutting block, and a limiting component for limiting the side pressure roller is provided at the bottom of the first rectangular rod.

[0013] As a preferred solution of the food packaging and sealing machine described in the present invention, the limiting component includes two sliding grooves opened at the bottom of the first rectangular rod, and a rectangular connecting block is slidably connected inside the two sliding grooves, a second spring is installed between the sliding groove and the rectangular connecting block, the two rectangular connecting blocks are fixedly connected by a trapezoidal abutment rod, and a fixed abutment block is fixedly connected to the bottom of the second rectangular rod, and the fixed abutment block initially abuts against the bottom of the trapezoidal abutment rod.

[0014] As a preferred embodiment of the food packaging and sealing machine described in the present invention, the auxiliary unit also includes a limit rod fixedly connected to both sides of the belt conveyor frame, and the two ends of the first rectangular rod are fixedly connected with a columnar rod, and the inner side of the limit rod is provided with a matching groove matching the columnar rod.

[0015] As a preferred solution of the food packaging and sealing machine described in the present invention, the top of the limit rod is rotatably connected to a support plate through a rotating shaft, and the front end of the support plate is arc-shaped, an arc spring is installed between the support plate and the limit rod, and one end of the limit rod is fixedly connected to a first abutment block.

[0016] As a preferred embodiment of the food packaging and sealing machine described in the present invention, one side of the rectangular connecting block is fixedly connected to an arch block, one end of the side pressure roller is rotatably connected to a connecting column, the top of the arch block is provided with a groove matching the connecting column, and the inner side of the arch block is rotatably connected to an end pressure roller.

[0017] Beneficial effects of the present invention: By setting the coordination of parts such as the air outlet channel, the driving motor drives the screw rod to rotate, thereby driving the slider to move inside the fixed frame, and at the same time, the slider drives the second rectangular rod connected to the rectangular connecting rod to move to the oblique upper side of the food packaging box, and the air inlet of the air pump is connected to the external inert gas supply pipe through a pipeline. At this time, the air pump is started, and the inert gas is input into the air outlet channel from the hose, and then blown out from the air outlet of the air outlet channel to remove water stains and other stains on the surface of the food packaging box. The clean surface is conducive to the close fit between the packaging film and the food packaging box. The purging of the inert gas ensures that there is no interference from impurities in the packaging area, so that the heat sealing head can evenly and effectively heat and press the packaging film, thereby improving the sealing and firmness of the packaging, so as to better seal the food packaging box. The use of inert gas for purging can also reduce the exchange of air between the inside and outside of the food packaging box to a certain extent, reduce the risk of oxidation and pollution, thereby improving the overall practicality of the device; By setting the cooperation of parts such as the end pressure roller, when the limiting rod is limited by the cylindrical rod and the second rectangular rod moves forward, the end of the abutment block contacts the inclined surface on the first abutment block, pushing the cylindrical connecting rod to drive the plug block to move toward the top inside the limiting frame. At this time, the first spring is stretched until the bottom end of the plug block extends out of the plug rod slot. At this time, the cylindrical rod is blocked by the limiting rod, and the second rectangular rod continues to move until the plug rod is separated from the first rectangular rod. The second rectangular rod moves while moving with the fixed abutment block. When the second rectangular rod is separated from the first rectangular rod, the limitation of the rectangular connecting block is cancelled. At this time, the rectangular connecting block is pushed downward under the action of the second spring, so that the end pressure roller can press one end of the film downward, exert a certain pressure on one end of the packaging film, and the end pressure roller is lower than the food packaging box. By applying pressure, the end pressure roller helps to firmly press the packaging film on the edge of the food packaging box. This pre-pressure ensures a tighter contact between the packaging film and the packaging box before the heat seal head heats and presses, thereby reducing any leaks that may occur during the sealing process. During the heat sealing process, the packaging film may move slightly due to the effect of heat. The end roller can help reduce this displacement by applying pressure in advance, thereby ensuring the accuracy and consistency of the packaging; By setting the cooperation of the connecting roller and other parts, when the second rectangular rod drives the air outlet channel to move laterally, it also drives the connecting roller to move synchronously. Since the connecting roller is initially attached to the top of the packaging film, the connecting roller that moves laterally gradually flattens the packaging film on the top of the food packaging box, thereby cooperating with the air outlet channel to spray inert gas to gradually realize the preliminary packaging of the food packaging box, which helps to gradually flatten the packaging film on the top of the food packaging box, eliminate any bubbles, wrinkles or uneven areas, and the flat packaging film can ensure that the heat sealing head can act evenly and effectively on the entire contact area during the heating and pressing process, thereby further improving the sealing and firmness of the packaging. Through the flattening of the connecting roller and the purging of the inert gas, the packaging film is firmly pressed on the edge of the food packaging box. This pre-pressure helps to ensure that the contact between the packaging film and the packaging box is closer before the heat sealing head is heated and pressed. The close contact can reduce the relative displacement between the packaging film and the packaging box during the packaging process, thereby enhancing the firmness and stability of the packaging. By setting the cooperation of parts such as the side pressure rollers, the side pressure rollers on both sides are driven to move while the end pressure roller moves. At this time, the connecting column at the end of the side pressure roller moves to the outside of the groove under the drag of the second rectangular rod, and under the action of the arc surface inside the groove, the side pressure roller is driven to rotate between the fixed seats through the fixed connecting block, and then separated from the groove of the arch block. Under the action of the torsion spring, the end connecting rod is driven to rotate on the fixed seat. When the connecting column is separated from the arch block, the side pressure roller is tilted downward under the action of the torsion spring, so that the two fixed connecting blocks respectively drive the side pressure rollers to tilt downward in an eight-shaped shape. When the end pressure rollers press the film downward, the side pressure rollers press downward on both sides of the packaging film on the top of the food packaging box, so that the packaging film can be better attached to the surface of the food packaging box, thereby improving the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the top structure of the belt conveyor frame of the present invention.

[0020] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4It is a schematic diagram of the structure of the first rectangular rod and the second rectangular rod of the present invention.

[0022] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle.

[0023] Figure 6 It is a schematic diagram of the cylindrical rod snap-in structure of the present invention.

[0024] Figure 7 It is a schematic diagram of the partial structure of the first rectangular rod and the second rectangular rod of the present invention.

[0025] Figure 8 It is a structural schematic diagram of one side of the second rectangular rod of the present invention.

[0026] Fig. 9 It is a structural schematic diagram of one side of the air outlet channel of the present invention.

[0027] Fig.10 It is a schematic diagram of the inner structure of the connecting socket of the present invention.

[0028] Fig.11 It is a schematic diagram of the separation of the first rectangular rod and the second rectangular rod of the present invention.

[0029] Fig.12 It is a schematic diagram of the structure after the first rectangular rod and the second rectangular rod of the present invention are moved.

[0030] In the figure: 1, film sealing frame; 2, fixed frame; 3, torsion spring; 4, rectangular connecting rod; 5, driving motor; 6, screw rod; 7, slider; 8, limit rod; 9, first rectangular rod; 10, second rectangular rod; 11, columnar rod; 12, fixed rod; 13, auxiliary connecting rod; 14, air outlet channel; 15, auxiliary roller; 16, air pump; 17, hose; 18, first abutment block; 19, baffle plate; 20, arc spring; 21, plug rod; 22, second abutment block; 23, plug block; 24, The first spring; 25, the limit frame; 26, the columnar connecting rod; 27, the abutment block; 28, the rectangular connecting block; 29, the second spring; 30, the trapezoidal abutment rod; 31, the end pressure roller; 32, the side pressure roller; 33, the arch block; 34, the connecting roller; 35, the connecting seat; 36, the fixed seat; 37, the fixed connecting block; 38, the end connecting rod; 39, the connecting column; 40, the slide groove; 41, the fixed abutment block; 42, the fixed roller; 43, the belt conveyor frame; 44, the packaging film; 45, the suspension frame. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0035] Example 1 Reference Figure 1 to Figure 12, a food packaging film sealing machine is provided, comprising: a film sealing frame 1, a belt conveyor frame 43 is installed on the top of the film sealing frame 1, two groups of suspension frames 45 are fixedly connected to the top of the inner side of the film sealing frame 1, and a fixed roller 42 is rotatably connected to the inner side of each group of suspension frames 45, and a packaging film 44 is rolled up between the two fixed rollers 42; a film pressing mechanism is arranged on the top of the belt conveyor frame 43, and is used to press the packaging film 44 on the surface of the food packaging box; a moving controller is located on one side of the belt conveyor frame 43, and is used to drive the film pressing mechanism to move The mobile controller includes a fixed frame 2 fixedly connected to one side of the belt conveyor frame 43, one end of the fixed frame 2 is fixedly connected to a driving motor 5, the execution end of the driving motor 5 passes through the fixed frame 2 and is fixedly connected to a screw rod 6, the outer wall of the screw rod 6 is threadedly connected to a slider 7, the top of the slider 7 is fixedly connected to a rectangular connecting rod 4, the bottom of the rectangular connecting rod 4 is fixedly connected to a second rectangular rod 10, one side of the second rectangular rod 10 is fixedly connected to two insertion rods 21, the film pressing mechanism includes two fixed rods 12 fixedly connected to the bottom of the second rectangular rod 10, the bottom of the two fixed rods 12 is fixedly connected to a connecting seat 35, a connecting roller 34 is rotatably connected between the two connecting seats 35 through a rotating shaft, and an auxiliary component for rolling the edge of the packaging film 44 is provided on one side of the connecting seat 35, the auxiliary component includes two fixed seats 36 fixedly connected to one side of the connecting seat 35, the inner sides of the two fixed seats 36 are rotatably connected to a fixed connecting block 37, one side of the fixed connecting block 37 is fixedly connected to an end connecting rod 38, and one end of the end connecting rod 38 passes through the outside of the fixed seat 36 and is connected to the fixed seat 36 Rotationally connected, a torsion spring 3 is installed between the end connecting rod 38 and the fixed seat 36, and the end of the fixed connecting block 37 is fixedly connected to the side pressure roller 32. The auxiliary component also includes an auxiliary connecting rod 13 fixedly connected to one side of the fixed rod 12, and the inner side of the auxiliary connecting rod 13 is fixedly connected to the air outlet channel 14. The top of the air outlet channel 14 is rotatably connected to the auxiliary roller 15 through a rotating shaft. The air inlet of the air outlet channel 14 is installed with a hose 17, and the side wall of the second rectangular rod 10 is installed with an air pump 16, and one end of the hose 17 is connected to the air outlet of the air pump 16; A belt and a belt roller are installed on the inner side of the belt conveyor frame 43, and a servo motor for driving the belt roller to rotate is installed on one side of the belt conveyor frame 43, and the belt is driven to rotate by the belt roller. A heat sealing head for heat sealing the packaging film 44 is installed at the top inner side of the film sealing frame 1 and above the packaging film 44, and the heat sealing head is driven by a driving device such as an electric push rod that can drive the heat sealing head to move downward. First, the material to be sealed is transported to the bottom of the heat sealing head through the belt conveyor frame 43, and then the lead screw 6 is driven to rotate by the driving motor 5, thereby driving the slider 7 to move inside the fixed frame 2, and at the same time, the slider 7 drives the second rectangular rod 10 connected to the rectangular connecting rod 4 to move to the oblique upper side of the food packaging box, and the air inlet of the air pump 16 is connected to the outside through a pipeline. The inert gas supply pipe is connected, and the air pump 16 is started at this time to input the inert gas into the outlet channel 14 from the hose 17, and then blown out from the air outlet of the outlet channel 14 to remove water stains and other stains on the surface of the food packaging box. The clean surface is conducive to the close fit between the packaging film 44 and the food packaging box. The purging of the inert gas ensures that there is no interference from impurities in the packaging area, so that the heat sealing head can evenly and effectively heat and press the packaging film 44, thereby improving the sealing and firmness of the packaging, so as to better seal the food packaging box. The use of inert gas for purging can also reduce the exchange of air between the inside and outside of the food packaging box to a certain extent, reducing the risk of oxidation and contamination, which is particularly important for foods that need to maintain freshness and extend the shelf life; When the second rectangular rod 10 drives the air outlet channel 14 to move laterally, it drives the connecting roller 34 to move synchronously. Since the connecting roller 34 is initially attached to the top of the packaging film 44, the laterally moving connecting roller 34 gradually flattens the packaging film 44 on the top of the food packaging box, thereby cooperating with the air outlet channel 14 to spray inert gas to gradually realize the preliminary packaging of the food packaging box, which helps to gradually flatten the packaging film 44 on the top of the food packaging box, eliminate any bubbles, wrinkles or uneven areas, and the flat packaging film can ensure that the heat sealing head can act evenly and effectively on the entire contact area during the heating and pressing process, thereby further improving the sealing and firmness of the packaging. Through the flattening of the connecting roller 34 and the purging of the inert gas, the packaging film 44 is firmly pressed on the edge of the food packaging box. This pre-pressure helps to ensure that the contact between the packaging film 44 and the packaging box is closer before the heat sealing head is heated and pressed. The close contact can reduce the relative displacement between the packaging film 44 and the packaging box during the packaging process, thereby enhancing the firmness and stability of the packaging. When the end pressure roller 31 moves, it drives the side pressure rollers 32 on both sides to move. At this time, the connecting column 39 at the end of the side pressure roller 32 moves to the outside of the groove under the drag of the second rectangular rod 10. Under the action of the arc surface inside the groove, the side pressure roller 32 is driven to rotate between the fixing seat 36 through the fixed connecting block 37, and then separated from the groove of the arch block 33. Under the action of the torsion spring 3, the end connecting rod 38 is driven to rotate on the fixing seat 36. When the connecting column 39 is separated from the arch block 33, the side pressure roller 32 is tilted downward under the action of the torsion spring 3, so that the two fixed connecting blocks 37 respectively drive the side pressure rollers 32 to tilt downward in an eight-shaped shape. When the end pressure roller 31 presses the film downward, the side pressure roller 32 presses the two sides of the packaging film 44 on the top of the food packaging box downward, so that the packaging film 44 can be better attached to the surface of the food packaging box, thereby improving the overall practicality of the device.

[0036] Example 2 The auxiliary unit is located above the belt conveyor frame 43 and is used to cooperate with the film pressing mechanism to flatten the two ends of the film and cover the surface of the food packaging box. The auxiliary unit includes a first rectangular rod 9 arranged on one side of the second rectangular rod 10. A through hole matching the insertion rod 21 is opened on the inner side of the first rectangular rod 9, and one end of the insertion rod 21 moves out from the inside of the through hole. Two limit frames 25 are fixedly connected to the side of the first rectangular rod 9 away from the second rectangular rod 10. The inner sides of the two limit frames 25 are slidably connected with the insertion blocks 23. One side of the insertion block 23 is fixedly connected with a columnar connecting rod 26. The columnar connecting rod 2 One end of the first rectangular rod 6 is fixedly connected with an abutting plug block 27, a retention groove is provided at the top of the first rectangular rod 9, a first spring 24 is installed between the plug block 23 and the retention groove, second abutting blocks 22 are fixedly connected on both sides of the second rectangular rod 10, and a first slot matching the abutting plug block 27 is provided at the top of the second abutting block 22, a limiting component for limiting the side pressure roller 32 is provided at the bottom of the first rectangular rod 9, and the limiting component includes two slide grooves 40 provided at the bottom of the first rectangular rod 9, and a rectangular connecting block 28 is slidably connected inside the two slide grooves 40, and the slide grooves 40 are connected to the side pressure roller 32. A second spring 29 is installed between the rectangular connecting blocks 28, and the two rectangular connecting blocks 28 are fixedly connected by a trapezoidal abutment rod 30. The bottom of the second rectangular rod 10 is fixedly connected with a fixed abutment block 41, and the fixed abutment block 41 initially abuts against the bottom of the trapezoidal abutment rod 30. The auxiliary unit also includes a limit rod 8 fixedly connected to both sides of the belt conveyor frame 43. The two ends of the first rectangular rod 9 are fixedly connected with a columnar rod 11. The inner side of the limit rod 8 is provided with a matching groove matching the columnar rod 11. The top of the limit rod 8 is rotatably connected with a stop plate 19 through a rotating shaft, and the stop plate 19 is 9 has an arc-shaped front end, an arc spring 20 is installed between the stop plate 19 and the limit rod 8, one end of the limit rod 8 is fixedly connected to the first abutting block 18, and the inner side of the first abutting block 18 is provided with a second slot matching the abutting plug-in block 27, the length of the second slot plus the first slot matches the length of the abutting plug-in block 27, one side of the rectangular connecting block 28 is fixedly connected to an arch block 33, one end of the side pressure roller 32 is rotatably connected to a connecting column 39, the top of the arch block 33 is provided with a groove matching the connecting column 39, and the inner side of the arch block 33 is rotatably connected to an end pressure roller 31; Before the second rectangular rod 10 moves to the top of the food packaging box, the columnar rods 11 at both ends of the first rectangular rod 9 enter the arc groove at the top of the limiting rod 8, so that the limiting rod 8 limits the columnar rod 11. Before the limiting rod 8 enters the arc groove, the columnar rod 11 contacts the stop plate 19, pushing the stop plate 19 to compress the arc spring 20. When the columnar rod 11 moves to the inside of the arc groove and is blocked, the stop plate 19 is no longer subjected to the extrusion force. The stop plate 19 is pulled back to its original position by the action of the arc spring 20, so that the stop plate 19 is against the outer wall of the columnar rod 11, limiting the columnar rod 11. The end pressure roller 31 is initially attached to the top of the packaging film 44. Before the limiting rod 8 is limited by the columnar rod 11, when the second rectangular rod 10 moves forward, the end of the abutment block 27 contacts the inclined surface of the first abutment block 18, pushing the columnar connecting rod 26 to drive the plug 23 to move toward the top inside the limiting frame 25. At this time, the first spring 24 is stretched until the bottom end of the plug 23 extends out of the plug rod 21 slot. At this time, the columnar rod 11 is blocked by the limiting rod 8, and the second rectangular rod 10 continues to move until the plug 21 is aligned with the first rectangular rod. 9 is separated, and the second rectangular rod 10 moves while moving with the fixed abutment block 41. When the second rectangular rod 10 is separated from the first rectangular rod 9, the limit on the rectangular connection block 28 is cancelled. At this time, the rectangular connection block 28 is pushed downward under the action of the second spring 29, so that the end pressure roller 31 can press down one end of the film, and a certain pressure is applied to one end of the packaging film 44, and the end pressure roller 31 is lower than the food packaging box. By applying pressure, the end pressure roller 31 helps to firmly press the packaging film 44 on the edge of the food packaging box. Before the heat sealing head is heated and pressed, this pre-pressure can ensure that the contact between the packaging film 44 and the packaging box is closer, thereby reducing any leakage points that may occur during the packaging process. During the heat sealing process, the packaging film 44 may be slightly displaced due to the action of heat. The end pressure roller 31 can help reduce this displacement by applying pressure in advance, thereby ensuring the accuracy and consistency of the packaging.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A food packaging film sealing machine, characterized in that: include: A film sealing frame (1), wherein a belt conveyor frame (43) is installed on the top of the film sealing frame (1), two groups of suspension frames (45) are fixedly connected to the top of the inner side of the film sealing frame (1), and the inner side of each group of the suspension frames (45) is rotatably connected to a fixed roller (42), and a packaging film (44) is rolled up between the two fixed rollers (42); a film pressing mechanism, arranged on the top of the belt conveyor frame (43), and used for pressing the packaging film (44) onto the surface of the food packaging box; A moving controller, located on one side of the belt conveyor frame (43), and used to drive the film pressing mechanism to move; An auxiliary unit is located above the belt conveyor frame (43) and is used to cooperate with the film pressing mechanism to flatten the two ends of the film and cover the film on the surface of the food packaging box. The auxiliary unit comprises a limit rod (8), a first rectangular rod (9), a columnar rod (11), a second abutment block (22), an insertion block (23), a limit frame (25), a columnar connecting rod (26), and an abutment insertion block (27). The columnar rod (11) is arranged on the inner side of the limit rod (8), the insertion block (23) is arranged on the inner side of the limit frame (25), and the columnar connecting rod (26) is arranged at one end of the insertion block (23), and the abutment insertion block (27) is arranged at one end of the columnar connecting rod (26).

2. A food packaging and sealing machine according to claim 1, characterized in that: The mobile controller comprises a fixed frame (2) fixedly connected to one side of the belt conveyor frame (43); one end of the fixed frame (2) is fixedly connected to a drive motor (5); an execution end of the drive motor (5) passes through the fixed frame (2) and is fixedly connected to a lead screw (6); an outer wall of the lead screw (6) is threadedly connected to a slider (7); a top of the slider (7) is fixedly connected to a rectangular connecting rod (4); a bottom of the rectangular connecting rod (4) is fixedly connected to a second rectangular rod (10); and one side of the second rectangular rod (10) is fixedly connected to two plug rods (21).

3. A food packaging and sealing machine according to claim 2, characterized in that: The film pressing mechanism comprises two fixed rods (12) fixedly connected to the bottom of the second rectangular rod (10), the bottoms of the two fixed rods (12) are fixedly connected to a connecting seat (35), a connecting roller (34) is rotatably connected between the two connecting seats (35) via a rotating shaft, and an auxiliary component for rolling the edge of the packaging film (44) is provided on one side of the connecting seat (35).

4. A food packaging and sealing machine according to claim 3, characterized in that: The auxiliary component comprises two fixed seats (36) fixedly connected to one side of the connecting seat (35); a fixed connecting block (37) is rotatably connected to the inner side of the two fixed seats (36); an end connecting rod (38) is fixedly connected to one side of the fixed connecting block (37); one end of the end connecting rod (38) passes through the outside of the fixed seat (36) and is rotatably connected to the fixed seat (36); a torsion spring (3) is installed between the end connecting rod (38) and the fixed seat (36); and a side pressure roller (32) is fixedly connected to the end of the fixed connecting block (37).

5. A food packaging and sealing machine according to claim 4, characterized in that: The auxiliary component further comprises an auxiliary connecting rod (13) fixedly connected to one side of the fixed rod (12); an air outlet channel (14) is fixedly connected to the inner side of the auxiliary connecting rod (13); the top of the air outlet channel (14) is rotatably connected to an auxiliary roller (15) via a rotating shaft; a hose (17) is installed at the air inlet of the air outlet channel (14); an air pump (16) is installed on the side wall of the second rectangular rod (10); one end of the hose (17) is connected to the air outlet of the air pump (16).

6. A food packaging and sealing machine according to claim 5, characterized in that: The auxiliary unit further comprises the first rectangular rod (9) arranged on one side of the second rectangular rod (10); a through hole matching the insertion rod (21) is provided on the inner side of the first rectangular rod (9); one end of the insertion rod (21) is moved out from the inside of the through hole; two limit frames (25) are fixedly connected to the side of the first rectangular rod (9) away from the second rectangular rod (10); the insertion blocks (23) are slidably connected to the inner sides of the two limit frames (25); and one side of the insertion block (23) is fixedly connected to the columnar connecting rod ( 26), one end of the columnar connecting rod (26) is fixedly connected to the abutting plug block (27), a retention groove is provided at the top of the first rectangular rod (9), a first spring (24) is installed between the plug block (23) and the retention groove, the second abutting blocks (22) are fixedly connected to both sides of the second rectangular rod (10), and a first slot matching the abutting plug block (27) is provided at the top of the second abutting block (22), and a limiting component for limiting the side pressure roller (32) is provided at the bottom of the first rectangular rod (9).

7. A food packaging and sealing machine according to claim 6, characterized in that: The limiting assembly comprises two slide grooves (40) provided at the bottom of the first rectangular rod (9), and a rectangular connecting block (28) is slidably connected inside the two slide grooves (40), a second spring (29) is installed between the slide grooves (40) and the rectangular connecting block (28), the two rectangular connecting blocks (28) are fixedly connected via a trapezoidal abutting rod (30), and a fixed abutting block (41) is fixedly connected to the bottom of the second rectangular rod (10), and the fixed abutting block (41) initially abuts against the bottom of the trapezoidal abutting rod (30).

8. A food packaging and sealing machine according to claim 7, characterized in that: The auxiliary unit further comprises the limiting rods (8) fixedly connected to both sides of the belt conveyor frame (43), the two ends of the first rectangular rod (9) are fixedly connected to the columnar rods (11), and the inner side of the limiting rods (8) is provided with a matching groove matching the columnar rods (11).

9. A food packaging and sealing machine according to claim 8, characterized in that: The top of the limiting rod (8) is rotatably connected to a stop plate (19) via a rotating shaft, and the front end of the stop plate (19) is arc-shaped. An arc spring (20) is installed between the stop plate (19) and the limiting rod (8), and one end of the limiting rod (8) is fixedly connected to a first stop block (18).

10. A food packaging and sealing machine according to claim 9, characterized in that: An arch block (33) is fixedly connected to one side of the rectangular connecting block (28); one end of the side pressure roller (32) is rotatably connected to a connecting column (39); a groove matching the connecting column (39) is formed on the top of the arch block (33); and an end pressure roller (31) is rotatably connected to the inner side of the arch block (33).

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