Automatic sealing device for food packaging

By setting a fixed support and sealing mechanism at the belt conveyor of the sealing machine, and utilizing a T-shaped pressure bolt, spring, and ball structure, the problem of bag mouth sagging caused by the forward tilting of heavy objects during the sealing process is solved, thereby improving the stability and sealing performance of the sealing.

CN224336396UActive Publication Date: 2026-06-09PINGDINGSHAN DANIAN TRADING CO LTD JIAXIAN BRANCH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PINGDINGSHAN DANIAN TRADING CO LTD JIAXIAN BRANCH
Filing Date
2025-06-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In existing continuous packaging bag sealing machines, heavy food items can easily cause the bag opening to tilt forward and sag during the sealing process, affecting the stability and sealing of the sealing position, leading to sealing deviations and product spoilage.

Method used

A fixed support mechanism and a sealing support mechanism are installed at the belt conveyor of the sealing machine. The combination of T-shaped pressure bolts, springs, rolling balls and downward inclined plates provides flexible support and guidance to ensure that the packaging bag remains flat during the sealing process and avoids displacement of the bag opening.

Benefits of technology

It effectively prevents displacement of the packaging bag opening, ensures a stable sealing position and a firm seal, and reduces the product scrap rate caused by sealing deviation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224336396U_ABST
Patent Text Reader

Abstract

The utility model discloses an automatic sealing device for food packaging, including sealing machine body and belt conveyor, the sealing machine body is close to the rack of own sealing position and is installed with belt conveyor, still include fixed support mechanism and the mechanism of supporting seal, through setting up fixed support mechanism and the mechanism of supporting seal at the belt conveyor of sealing machine body's supporting, the T shape pressure bolt of fixed support mechanism and spring combination at T shape supporting barrel can adjust the support height of the mechanism of supporting seal flexibly, and the lower inclined supporting plate of the mechanism of supporting seal and the ball structure can provide the sustained guiding support force in the food packaging bag sealing conveying process, when the packaging bag with heavy object passes, the ball can rotate with the movement of bag body, can reduce friction resistance, can also guide the bag body to keep level through the inclined plate face, avoid the problem of bag mouth subsidence caused by food forward inclination, guarantee the stable sealing of packaging bag sealing position.
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Description

Technical Field

[0001] This utility model relates to the field of food packaging sealing technology, and in particular to an automatic sealing device for food packaging. Background Technology

[0002] When food packaging bags need to be sealed after being filled with food, some small-scale food manufacturers use continuous packaging bag sealing machines to perform the sealing operation. One type of small continuous packaging bag sealing machine on the market heats the heating element to the set temperature through an electronic constant temperature control device. The packaging bag passes through the heating element at a certain speed using a stepless speed regulation transmission system. The heating element heats the single-layer film or various composite films, causing the film to melt. Then, through a certain pressure, the molten film is bonded together, thereby achieving continuous automatic sealing.

[0003] In existing continuous packaging bag sealing machines, when sealing food packaging bags, workers feed the opening of the bag containing food between the pressure conveyor belts of the sealing machine, while the bottom of the bag rests on the surface of the conveyor belt for transport. Some heavier multi-piece food items tend to tilt forward towards the opening during the bag transport and sealing process, causing the bag opening to sag. This results in slight displacement of the bag opening between the pressure conveyor belt and the sealing position, thus affecting the sealing position of the bag. To address this, we propose an automatic sealing device for food packaging. Utility Model Content

[0004] The main objective of this invention is to provide an automatic sealing device for food packaging. By installing a fixed support mechanism and a sealing support mechanism on the belt conveyor of the sealing machine body, the T-shaped pressure bolt and spring combination of the fixed support mechanism at the T-shaped support cylinder can flexibly adjust the support height of the sealing support mechanism. Meanwhile, the inclined support plate and ball structure of the sealing support mechanism provide continuous guiding support during the sealing and conveying of the food packaging bag. When a bag containing heavy objects passes through, the ball can rotate with the bag, reducing frictional resistance and guiding the bag to remain flat through the inclined plate, preventing the bag opening from sagging due to the food tilting forward. This ensures a stable sealing position for the packaging bag. Furthermore, the precise support and positioning of the sealing support mechanism effectively prevents displacement of the bag opening between the conveyor belts, ensuring a neat and secure seal, effectively reducing the product scrap rate caused by sealing deviations, and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic sealing device for food packaging includes a sealing machine body and a belt conveyor. The belt conveyor is installed on the frame of the sealing machine body near its sealing position. The device also includes a fixed support mechanism and a sealing support mechanism. The fixed support mechanism includes a perforated plate, a T-shaped clamp, and a spring. The perforated plate is bolted to the surface of the frame plate of the belt conveyor near the sealing position of the sealing machine body. A T-shaped support for screwing on the T-shaped clamp is integrally formed on one side of the perforated plate. A spring is press-fitted between the T-shaped support and the T-shaped clamp. The sealing support mechanism includes a bridge plate, a lower inclined support plate, a ball limiting plate, and a ball. A sleeve for clamping the head of the T-shaped clamp is welded to the lower surface of the bridge plate. A lower inclined support plate is welded to one side of the bridge plate, and a ball is mounted on the surface of the lower inclined support plate through the ball limiting plate.

[0007] Furthermore, the body of the T-shaped clamp is screwed into the threaded cavity of the T-shaped support, and a spring is fitted around the body of the T-shaped clamp.

[0008] By adopting the above technical solution, the T-shaped clamp can be screwed into the threaded cavity of the T-shaped support after passing through the spring, thereby compressing the spring and providing support between the T-shaped clamp and the T-shaped support with the spring.

[0009] Furthermore, a fork plate of a fork frame is welded to the lower part of the bridge plate, and a lower inclined support plate is welded between the surface of the fork frame plate and the bridge plate.

[0010] By adopting the above technical solution, after the bridge plate is welded with the fork, the fork can be welded to the lower surface of the inclined plate for welding support.

[0011] Furthermore, the surface of the lower inclined plate is provided with recesses arranged along the length of the plate to accommodate the rotation of the rolling ball, and a ball limiting plate for limiting the rolling ball is adhered to the surface of the lower inclined plate above the ball shell.

[0012] By adopting the above technical solution, the inclined support plate is provided with a number of spherical shells to accommodate the rolling ball. Then, the ball limiting plate is bonded to the surface of the inclined support plate, so that the rolling ball rotates between the ball limiting plate and the spherical shells.

[0013] Furthermore, a ball-limiting groove is formed through the surface of the ball-limiting plate, and a spherical surface with a rolling ball is exposed at the ball-limiting groove;

[0014] By adopting the above technical solution, the rolling ball is exposed at the ball-limiting groove of the ball-limiting plate, and can roll and contact the packaging bag containing the food for passive delivery.

[0015] Furthermore, inclined plate surfaces are provided at both ends of the ball-limiting plate;

[0016] By adopting the above technical solution, the ball-limiting board can guide the food-filled packaging bag through by tilting its inclined surface.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features a fixed support mechanism and a sealing support mechanism installed on the belt conveyor of the sealing machine body. The T-shaped pressure bolt and spring combination of the fixed support mechanism can flexibly adjust the support height of the sealing support mechanism at the T-shaped support cylinder. The inclined support plate and ball structure of the sealing support mechanism can provide continuous guiding support force during the sealing and conveying of food packaging bags. When a packaging bag containing heavy objects passes through, the ball can rotate with the movement of the bag, which can reduce frictional resistance and guide the bag to remain flat through the inclined plate surface, avoiding the problem of bag mouth falling due to food tilting forward, and ensuring the stable sealing position of the packaging bag.

[0019] Furthermore, the precise support and positioning of the sealing mechanism effectively prevents the packaging bag opening from shifting between the conveyor belts, ensuring that the packaging bag is neatly and securely sealed, and effectively reducing the product scrap rate caused by sealing deviation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an automatic sealing device for food packaging according to this utility model.

[0021] Figure 2 This is a schematic diagram showing the fixed support mechanism and the sealing mechanism of an automatic sealing device for food packaging, as well as the belt conveyor, disassembled according to the present invention.

[0022] Figure 3 This is an exploded view of the fixed support mechanism of an automatic sealing device for food packaging according to this utility model.

[0023] Figure 4 This is an exploded view of the sealing mechanism of an automatic sealing device for food packaging according to this utility model.

[0024] In the diagram: 1. Sealing machine body; 2. Belt conveyor; 3. Fixed support mechanism; 4. Sealing support mechanism; 5. Hole plate; 6. T-shaped support cylinder; 7. T-shaped pressure bolt; 8. Spring; 9. Sleeve; 10. Bridge plate; 11. Fork frame; 12. Lower inclined support plate; 13. Spherical shell; 14. Ball limiting plate; 15. Rolling ball. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] like Figure 1-4As shown, an automatic sealing device for food packaging includes a sealing machine body 1 and a belt conveyor 2. The belt conveyor 2 is installed on the frame of the sealing machine body 1 near its sealing position. It also includes a fixed support mechanism 3 and a sealing support mechanism 4. The fixed support mechanism 3 includes a perforated plate 5, a T-shaped clamp 7, and a spring 8. The perforated plate 5 is bolted to the surface of the frame plate of the belt conveyor 2 near the sealing position of the sealing machine body 1. A T-shaped support 6 for screwing the T-shaped clamp 7 is integrally formed on one side of the perforated plate 5. A spring 8 is press-fitted between the T-shaped support 6 and the T-shaped clamp 7. The sealing support mechanism 4 includes a bridge plate 10, a lower inclined support plate 12, a ball limiting plate 14, and a ball bearing 15. A sleeve 9 for clamping the head of the T-shaped clamp 7 is welded to the lower plate surface of the bridge plate 10. The lower inclined support plate 12 is welded to one side of the bridge plate 10. A ball bearing 15 is installed on the surface of the lower inclined support plate 12 through the ball limiting plate 14.

[0027] The T-shaped clamp 7 is screwed into the threaded cavity of the T-shaped support 6, and a spring 8 is fitted around the outside of the T-shaped clamp 7.

[0028] By adopting the above technical solution, the bolt body of the T-shaped clamp 7 can be screwed into the threaded cavity of the T-shaped support 6 after passing through the spring 8, thereby compressing the spring 8, so that the T-shaped clamp 7 and the T-shaped support 6 are supported by the spring 8.

[0029] The bridge plate 10 has a fork plate of a fork 11 welded to its lower part, and a lower inclined support plate 12 is welded between the surface of the fork plate 11 and the bridge plate 10.

[0030] By adopting the above technical solution, after the bridge plate 10 is welded with the fork 11, the fork 11 can be welded to the lower surface of the inclined support plate 12 for welding support.

[0031] The lower inclined plate 12 has a recessed surface along the length of the plate body, which is provided with a ball shell 13 for accommodating the rotation of the rolling ball 15, and a ball limiting plate 14 for limiting the rolling ball 15 is attached to the surface of the lower inclined plate 12 above the ball shell 13.

[0032] By adopting the above technical solution, the lower inclined plate 12 is provided with a number of spherical shells 13 to accommodate the rolling ball 15. Then, the ball limiting plate 14 is bonded to the surface of the lower inclined plate 12, so that the rolling ball 15 rotates between the ball limiting plate 14 and the spherical shells 13.

[0033] Wherein, the surface of the ball limiting plate 14 is provided with a ball limiting groove, and the spherical surface of the rolling ball 15 is exposed at the ball limiting groove;

[0034] By adopting the above technical solution, the rolling ball 15 is exposed at the ball-limiting groove of the ball-limiting plate 14, and can roll to contact the packaging bag containing the food for passive delivery.

[0035] Wherein, inclined plate surfaces are provided at both end plates of the ball limiting plate 14;

[0036] By adopting the above technical solution, the ball limiting plate 14 can be in inclined contact with the food-containing packaging bag through the inclined plate surface for guiding and passing.

[0037] It should be noted that the present utility model is an automatic sealing device for food packaging. By arranging a fixed support mechanism 3 and a supporting and sealing mechanism 4 at the belt conveyor 2 supporting the sealing machine body 1, after the hole mounting plate 5 of the fixed support mechanism 3 is locked to the surface of the gusset plate near the sealing position on the surface of the belt conveyor 2 close to the sealing machine body 1 by bolts, a spring 8 can be placed in the T-shaped supporting cylinder 6 on one side of the hole mounting plate 5, and a T-shaped pressing bolt 7 passes through the spring 8 and is screwed into the T-shaped supporting cylinder 6. The T-shaped pressing bolt 7 is appropriately adjusted for the screwing-out distance in the T-shaped supporting cylinder 6 according to the required supporting height of the packaging bag at the packaging bag sealing site by the supporting and sealing mechanism 4. Then, the bridge plate 10 of the supporting and sealing mechanism 4 is sleeved on the surface of the T-shaped pressing bolt 7 with a sleeve 9, and the bridge plate 10 supports the downwardly inclined supporting plate 12 with a fork support 11. A ball port 13 on the downwardly inclined supporting plate 12 is fitted with a ball limiting plate 14 to clamp a rolling ball 15, so that the rolling ball 15 can rotate and be exposed at the ball limiting plate 14. The bag mouth of the packaging bag containing food can be placed between the pressing belts of the sealing machine body 1. Subsequently, the bottom of the packaging bag is placed on the surface of the belt conveyor 2, and the bag body near the packaging bag mouth can be pressed on the surface of the ball limiting plate 14 of the downwardly inclined supporting plate 12. When the packaging bag is conveyed on the surface of the belt conveyor 2 through the sealing position of the sealing machine body 1 for sealing, the inclined position of the packaging bag is rolled and conveyed at the rolling ball 15 pressed on the surface of the ball limiting plate 14, preventing the food-containing packaging bag from being prone to forward inclination during the conveying and packaging process when being conveyed and sealed at the sealing machine body 1, ensuring that the packaging bag mouth is not prone to slight displacement at the pressing belt and the sealing position of the sealing machine, and ensuring good sealing of the food packaging bag.

[0038] It should be noted that the present utility model is an automatic sealing device for food packaging. The components in the present utility model are all components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0039] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic sealing device for food packaging, comprising a sealing machine body (1) and a belt conveyor (2), wherein the belt conveyor (2) is installed on the frame of the sealing machine body (1) near its sealing position, characterized in that: It also includes a fixed support mechanism (3) and a sealing mechanism (4). The fixed support mechanism (3) includes a perforated plate (5), a T-shaped clamp (7), and a spring (8). The perforated plate (5) is bolted to the surface of the frame plate near the sealing position of the sealing machine body (1) of the belt conveyor (2). A T-shaped support cylinder (6) for screwing on the T-shaped clamp (7) is integrally formed on one side of the perforated plate (5). The T-shaped support cylinder (6) and the T-shaped clamp (7) are connected to the T-shaped clamp (7). A spring (8) is press-fitted between the clamps (7). The sealing mechanism (4) includes a bridge plate (10), a lower inclined plate (12), a ball limiting plate (14), and a ball (15). A sleeve (9) for the head of the T-shaped clamp (7) is welded to the lower plate surface of the bridge plate (10). A lower inclined plate (12) is welded to one side of the bridge plate (10), and a ball (15) is installed on the surface of the lower inclined plate (12) through the ball limiting plate (14).

2. The automatic sealing device for food packaging according to claim 1, characterized in that: The body of the T-shaped clamp (7) is screwed into the threaded cavity of the T-shaped support (6), and a spring (8) is fitted around the body of the T-shaped clamp (7).

3. The automatic sealing device for food packaging according to claim 1, characterized in that: The fork plate of the fork frame (11) is welded to the bottom of the bridge plate (10), and a lower inclined support plate (12) is welded between the surface of the fork frame (11) and the bridge plate (10).

4. The automatic sealing device for food packaging according to claim 1, characterized in that: The surface of the lower inclined plate (12) is provided with recesses arranged along the length of the plate to accommodate the rotation of the rolling ball (15), and a ball limiting plate (14) for limiting the rolling ball (15) is attached to the surface of the lower inclined plate (12) above the ball shell (13).

5. An automatic sealing device for food packaging according to claim 1, characterized in that: The ball limiting plate (14) has a ball limiting groove through its surface, and the spherical surface of the rolling ball (15) is exposed at the ball limiting groove.

6. The automatic sealing device for food packaging according to claim 1, characterized in that: The ball-limiting plate (14) has inclined plate surfaces at both ends.