A sealing device for prepared product packaging
By combining the support device and the limiting device, the problem of poor stability of the sealing device during the conveying of packaging bags is solved, and the effects of rapid sealing of packaging bags and prevention of material spillage are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HUIFA FOODS
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-14
AI Technical Summary
Existing sealing devices have poor stability during the transportation of packaging bags, which can easily lead to material spillage and reduce the convenience of packaging.
A sealing device for prepared product packaging, including a support device, a limiting device, and a guiding device, is designed. The limiting device blocks and limits the packaging bag, stopping its movement between the support plates. Then, the support device moves the support plates closer together to achieve heat sealing by the heating plate, ensuring that the opening of the packaging bag faces upward and preventing material spillage.
It achieves a quick sealing effect on packaging bags, ensuring that the opening always faces upwards, improving the convenience and stability of sealing, and preventing material spillage.
Smart Images

Figure CN224491732U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sealing devices, and in particular to a sealing device for prepared product packaging. Background Technology
[0002] Plastic packaging bags are an indispensable item in the daily life of modern people. In the process of using packaging bags, in order to achieve convenient transportation, easy carrying, aesthetics, hygiene, prevention of contamination, or other purposes, the packaging bags need to be sealed.
[0003] Currently, among existing sealing devices, such as the patent with publication number CN215707640U, this utility model discloses a sealing device for the production of plastic packaging bags, which relates to the field of sealing device technology. It includes a workbench, a base plate, and an L-shaped fixing plate. A conveyor belt is provided on the upper end of one side of the workbench, and a sealing mechanism is movably installed on the upper back of the workbench. Connecting plates are fixedly connected to both sides of the bottom end of the workbench, and the base plate is fixedly connected to the upper surface of one end of the connecting plate.
[0004] Existing sealing devices have been found to have poor stability in conveying packaging bags, and the internal materials are prone to spillage during bag conveying, reducing the convenience of packaging use. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a sealing device for prepared food packaging that facilitates rapid sealing of packaging, ensures that the opening of the packaging always faces upwards, prevents internal materials from spilling out, and improves sealing convenience.
[0006] This utility model discloses a sealing device for prepared product packaging, comprising a base and a conveyor belt, with the conveyor belt mounted on the top of the base; it also includes a support device, a limiting device, a guiding device, a support plate, and an electric heating plate. Two sets of electric heating plates are respectively mounted opposite each other on the outer walls of two sets of support plates, which are mounted on the support device. The support device is used to drive the two sets of support plates to move in opposite directions. The base is provided with a limiting device and a guiding device. The limiting device is used to limit the conveying of the packaging bag, and the guiding device is used to guide and support the packaging bag during the conveying process. The packaging is placed on the conveyor belt with the opening facing upwards. The packaging is moved and conveyed by the rotation of the conveyor belt. When the packaging moves between the two sets of support plates, the limiting device blocks and limits the packaging, stopping its movement. Then, the support device drives the two sets of support plates to move closer to each other, thereby allowing the two sets of electric heating plates to heat-seal the opening of the packaging, achieving a rapid sealing effect. Afterwards, the limiting device stops limiting the packaging bag, allowing it to continue to be conveyed by the conveyor belt. During the packaging conveying process, the guiding device provides support to ensure that the opening of the packaging always faces upwards, preventing the internal materials from spilling out.
[0007] Preferably, the limiting device includes a base, a cam, a motor, a guide seat, a guide frame, a baffle, and a spring. The base is mounted on the base, the cam is rotatably mounted on the base, the motor is mounted on the base and connected to the cam, the guide seat is mounted on the base, the guide frame is slidably mounted on the guide seat, and the end of the guide frame contacts the outer wall of the cam. The baffle is mounted on the other end of the guide frame, and the spring is fitted onto the guide frame. When the packaging moves between the two sets of support plates, the motor drives the cam to rotate, and the protrusion of the cam pushes the guide frame to slide, thereby causing the guide frame to move the baffle to the side of the packaging to block it. After the packaging is sealed, the motor drives the cam to continue rotating, causing the cam to stop pushing the guide frame. At this time, the spring drives the guide frame to slide, causing the baffle to reset, improving the limiting effect on the packaging and avoiding frequent start and stop of the conveyor belt.
[0008] Preferably, the guiding device includes guide rails, support arms, limiting frames, and first cylinders. Multiple sets of guide rails are mounted on the base, multiple sets of support arms are slidably mounted on the multiple sets of guide rails, two sets of limiting frames are mounted opposite each other on the multiple sets of support arms, and multiple sets of first cylinders are mounted on the multiple sets of guide rails. The moving ends of the multiple sets of first cylinders are connected to the multiple sets of support arms. The two sets of limiting frames limit the sides of the packaging to prevent it from tipping over during transport and improve the centering effect of the packaging. By controlling the extension and retraction length of the multiple sets of first cylinders, the distance between the two sets of limiting frames can be adjusted, improving the convenience of guiding different packages.
[0009] Preferably, the support device includes a gantry frame, a second cylinder, and sliding seats. The gantry frame is mounted on the base, two sets of sliding seats are slidably mounted on the gantry frame, two sets of support plates are respectively mounted on the two sets of sliding seats, two sets of second cylinders are mounted on the gantry frame, and the moving ends of the two sets of second cylinders are connected to the two sets of sliding seats. The two sets of second cylinders drive the two sets of sliding seats to slide, so that the two sets of sliding seats drive the two sets of heating plates to move in opposite directions.
[0010] Preferably, it also includes a position sensor, which is installed on the outer wall of the conveyor belt; the position sensor senses the conveying position of the packaging, thereby facilitating the use of the controller to control the action of the device to limit and seal the packaging, thus improving the automation effect.
[0011] Preferably, it also includes bolts, and multiple sets of through holes are vertically provided on the two sets of sliding seats. The multiple sets of bolts pass through the through holes and are installed on the two sets of support plates; this improves the convenience of loading and unloading the two sets of support plates, and also improves the convenience of adjusting the installation height of the two sets of support plates.
[0012] Preferably, the limiting frame is made of aluminum; this reduces the weight of the limiting frame, lightens the load on the support arm, and improves portability.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The packaging is placed on the conveyor belt with the opening facing upwards. The packaging is moved and conveyed by the rotation of the conveyor belt. When the packaging moves between the two sets of support plates, the limiting device blocks and limits the packaging to stop its movement. Then, the supporting device drives the two sets of support plates to move closer to each other, so that the two sets of electric heating plates heat-seal the opening of the packaging, achieving a rapid sealing effect. After that, the limiting device stops limiting the packaging bag and allows it to continue to be conveyed by the conveyor belt. During the packaging conveying process, the guiding device supports the packaging to ensure that the opening of the packaging always faces upwards, avoiding the spillage of internal materials. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;
[0015] Figure 2 This is a partial isometric structural diagram of the connection between the gantry and the second cylinder, etc.
[0016] Figure 3 This is a partial isometric structural diagram of the connection between the guide seat and the guide frame, etc.
[0017] Figure 4 This is a partial isometric structural diagram of the connection between the support arm and the limiting frame, etc.
[0018] Figure 5 This is a partial isometric structural diagram of the connection between the guide rail and the support arm, etc.
[0019] Figure 6 This is a partial isometric structural diagram of the connection between the conveyor belt and position sensors, etc.
[0020] The following are labeled in the attached diagram: 1. Base; 2. Conveyor belt; 3. Support plate; 4. Heating plate; 5. Base; 6. Cam; 7. Motor; 8. Guide seat; 9. Guide frame; 10. Baffle; 11. Spring; 12. Guide rail; 13. Support arm; 14. Limiting frame; 15. First cylinder; 16. Gantry frame; 17. Second cylinder; 18. Sliding seat; 19. Position sensor; 20. Bolt. Detailed Implementation
[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1
[0022] like Figures 1 to 6As shown, this utility model discloses a sealing device for packaged goods, including a base 1 and a conveyor belt 2, with the conveyor belt 2 installed at the top of the base 1; it also includes a support device, a limiting device, a guiding device, a support plate 3, and an electric heating plate 4, with two sets of electric heating plates 4 respectively installed opposite to each other on the outer walls of the two sets of support plates 3, and the two sets of support plates 3 installed on the support device. The support device is used to drive the two sets of support plates 3 to move opposite to each other. The base 1 is provided with a limiting device and a guiding device. The limiting device is used to limit the conveying of the packaging bag, and the guiding device is used to guide and support the packaging bag during the conveying process.
[0023] like Figure 3 As shown, the limiting device includes a base 5, a cam 6, a motor 7, a guide seat 8, a guide frame 9, a baffle 10, and a spring 11. The base 5 is mounted on the base 1, the cam 6 is rotatably mounted on the base 5, the motor 7 is mounted on the base 5 and connected to the cam 6, the guide seat 8 is mounted on the base 1, the guide frame 9 is slidably mounted on the guide seat 8, the end of the guide frame 9 contacts the outer side wall of the cam 6, the baffle 10 is mounted on the other end of the guide frame 9, and the spring 11 is fitted onto the guide frame 9.
[0024] In this embodiment, the package is placed on the conveyor belt 2 with the opening facing upwards. The package is moved and conveyed by the rotation of the conveyor belt 2. When the package moves between the two sets of support plates 3, the limiting device blocks and limits the package to stop its movement. Then, the supporting device drives the two sets of support plates 3 to move closer to each other, so that the two sets of electric heating plates 4 heat-seal the opening of the package, achieving a rapid sealing effect. After that, the limiting device stops limiting the package bag and allows it to continue to be conveyed by the conveyor belt 2. During the packaging conveying process, the guide device supports the package to ensure that the opening of the package always faces upwards, avoiding the spillage of internal materials. Example 2
[0025] Based on Example 1, such as Figure 4 As shown, this utility model discloses a sealing device for packaged prepared products. The guiding device includes a guide rail 12, a support arm 13, a limiting frame 14, and a first cylinder 15. Multiple sets of guide rails 12 are all arranged on the base 1. Multiple sets of support arms 13 are slidably mounted on the multiple sets of guide rails 12. Two sets of limiting frames 14 are mounted opposite to the multiple sets of support arms 13. Multiple sets of first cylinders 15 are respectively mounted on the multiple sets of guide rails 12. The moving ends of the multiple sets of first cylinders 15 are respectively connected to the multiple sets of support arms 13.
[0026] like Figure 2 As shown, the support device includes a gantry frame 16, a second cylinder 17, and a sliding seat 18. The gantry frame 16 is mounted on the base 1, two sets of sliding seats 18 are slidably mounted on the gantry frame 16, two sets of support plates 3 are respectively mounted on the two sets of sliding seats 18, two sets of second cylinders 17 are mounted on the gantry frame 16, and the moving ends of the two sets of second cylinders 17 are connected to the two sets of sliding seats 18.
[0027] like Figure 6 As shown, it also includes a position sensor 19, which is mounted on the outer wall of the conveyor belt 2;
[0028] like Figure 2 As shown, it also includes bolts 20. The two sets of sliding seats 18 are provided with multiple sets of through holes vertically, and the multiple sets of bolts 20 pass through the through holes and are installed on the two sets of support plates 3.
[0029] like Figure 1 As shown, the limiting frame 14 is made of aluminum.
[0030] In this embodiment, when the packaging moves between the two sets of support plates 3, the motor 7 drives the cam 6 to rotate, and the protrusion of the cam 6 pushes the guide frame 9 to slide, thereby causing the guide frame 9 to move the baffle 10 to the side of the packaging to block it. After the packaging is sealed, the motor 7 drives the cam 6 to continue rotating so that the cam 6 stops pushing the guide frame 9. At this time, the spring 11 drives the guide frame 9 to slide so that the baffle 10 is reset, improving the packaging limiting effect and avoiding frequent start and stop of the conveyor belt 2. The two sets of limiting frames 14 limit the sides of the packaging to prevent it from tipping over during the packaging transportation process, while improving the centering effect of the packaging. By controlling the extension and retraction length of multiple sets of first cylinders 15, it is easy to adjust the distance between the two sets of limiting frames 14, improving the convenience of guiding different packaging.
[0031] This utility model discloses a packaging sealing device for prepared products. During operation, the package is placed on the conveyor belt 2 with the opening facing upwards. The package is moved and conveyed by the rotation of the conveyor belt 2. When the package moves between two sets of support plates 3, a limiting device blocks and limits the package to stop its movement. Then, the support device drives the two sets of support plates 3 to move closer to each other, so that the two sets of electric heating plates 4 heat-seal the opening of the package, achieving a rapid sealing effect. Afterward, the limiting device stops limiting the package and allows it to continue to be conveyed by the conveyor belt 2.
[0032] The conveyor belt 2, heating plate 4, motor 7, first cylinder 15, second cylinder 17 and position sensor 19 of the prepared product packaging sealing device of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A sealing device for prepared product packaging, comprising a base (1) and a conveyor belt (2), the conveyor belt (2) being mounted on the top of the base (1); characterized in that, It also includes a support device, a limiting device, a guiding device, a support plate (3) and an electric heating plate (4). Two sets of electric heating plates (4) are installed opposite each other on the outer walls of the two sets of support plates (3). The two sets of support plates (3) are installed on the support device. The support device is used to drive the two sets of support plates (3) to move opposite each other. A limiting device and a guiding device are provided on the base (1). The limiting device is used to limit the conveying of the packaging bag, and the guiding device is used to guide and support the packaging bag during the conveying process.
2. The prepared food packaging sealing device as described in claim 1, characterized in that, The limiting device includes a base (5), a cam (6), a motor (7), a guide seat (8), a guide frame (9), a baffle (10), and a spring (11). The base (5) is mounted on the base (1), the cam (6) is rotatably mounted on the base (5), the motor (7) is mounted on the base (5) and connected to the cam (6), the guide seat (8) is mounted on the base (1), the guide frame (9) is slidably mounted on the guide seat (8), the end of the guide frame (9) contacts the outer wall of the cam (6), the baffle (10) is mounted on the other end of the guide frame (9), and the spring (11) is fitted onto the guide frame (9).
3. The prepared food packaging sealing device as described in claim 1, characterized in that, The guiding device includes guide rails (12), support arms (13), limit frames (14) and first cylinders (15). Multiple sets of guide rails (12) are all set on the base (1). Multiple sets of support arms (13) are slidably installed on multiple sets of guide rails (12). Two sets of limit frames (14) are installed opposite to each other on multiple sets of support arms (13). Multiple sets of first cylinders (15) are installed on multiple sets of guide rails (12). The moving ends of multiple sets of first cylinders (15) are connected to multiple sets of support arms (13).
4. The prepared product packaging sealing device as described in claim 1, characterized in that, The support device includes a gantry (16), a second cylinder (17), and a sliding seat (18). The gantry (16) is mounted on the base (1), and two sets of sliding seats (18) are slidably mounted on the gantry (16). Two sets of support plates (3) are respectively mounted on the two sets of sliding seats (18). Two sets of second cylinders (17) are mounted on the gantry (16), and the moving ends of the two sets of second cylinders (17) are connected to the two sets of sliding seats (18).
5. A sealing device for prepared product packaging as described in claim 1, characterized in that, It also includes a position sensor (19), which is mounted on the outer wall of the conveyor belt (2).
6. A sealing device for prepared product packaging as described in claim 4, characterized in that, It also includes bolts (20), and the two sets of sliding seats (18) are provided with multiple sets of through holes vertically, and the multiple sets of bolts (20) are installed on the two sets of support plates (3) through the through holes.
7. A sealing device for prepared product packaging as described in claim 3, characterized in that, The limiting frame (14) is made of aluminum.
Citation Information
Patent Citations
Sealing device for plastic packaging bag production
CN215707640U