A multi-column transverse sealing device and a sealing plate element

Abstract

The application relates to a multi-column strip transverse sealing device and a sealing plate element, and belongs to the technical field of packaging equipment. The transverse sealing device comprises a sealing plate element and a heating device matched with the sealing plate element; the sealing plate element comprises a cross beam and a plurality of pressing plates arranged along the length direction of the cross beam, and each pressing plate is elastically connected with the cross beam through an elastic element. According to the application, each pressing plate can independently perform elastic floating, the thickness difference of the to-be-sealed positions of the columns of strips can be adaptively compensated, the sealing pressure of the columns of strips tends to be more uniform, and the effect of improving the consistency of the transverse sealing quality of the columns of strips is achieved.

Description

Technical Field

[0001] This application relates to the field of packaging machinery technology, and in particular to a multi-row horizontal sealing device and a sealing plate. Background Technology

[0002] In multi-row strip packaging machines, the horizontal sealing device is a key component for achieving the final sealing of the packaging bags, and its performance directly affects the airtightness and appearance quality of the product. Currently, mainstream multi-row strip packaging machines typically use a single, integral beam running the entire width of the machine as the heat-sealing actuator. This beam is driven by a servo motor or cylinder, performing parallel reciprocating clamping motions to simultaneously heat-seal multiple rows of packaging film.

[0003] However, as market demands for production efficiency increase and the number of packaging rows (i.e., equipment width) continues to grow, the inherent defects of this integral beam structure have become increasingly apparent. The main problem lies in uneven clamping force. Due to the excessive length of the beam, it inevitably undergoes slight deflection deformation under stress (especially when driven in the middle and supported at both ends), the so-called "smile curve" effect. This deformation leads to a significant difference in clamping force between the middle and the beginning and end of the beam, making it difficult to ensure consistent sealing pressure applied to each row of packaging bags. This directly results in inconsistent sealing strength between different rows of packaging bags; some products may be sealed too tightly, causing material damage, while others may be poorly sealed, seriously affecting the airtightness and pass rate of the entire batch of products.

[0004] Regarding the aforementioned technologies, there is a technical problem that the use of an integral beam structure can lead to uneven sealing pressure in each column, thus affecting the consistency of product sealing quality. Utility Model Content

[0005] In order to solve the technical problem that uneven sealing pressure in each row caused by the use of an integral crossbeam in related technologies, which in turn affects the consistency of product sealing quality, this application provides a multi-row cross-sealing device.

[0006] The multi-row horizontal sealing device provided in this application adopts the following technical solution: A multi-row horizontal sealing device includes a sealing plate for applying pressure to the rows to be sealed, a crossbeam and a plurality of pressure plates connected to the crossbeam, the pressure plates being configured to match the rows to be sealed; a heating device disposed opposite to the sealing plate for providing a heat source for the sealing process; and a driving device drivenly connected to the sealing plate and the heating device, the driving device being used to drive the sealing plate and the heating device to move relative to each other to heat seal the rows.

[0007] By adopting the above technical solution, the crossbeam serves as a unified load-bearing and transmission platform, while each pressure plate independently corresponds to a row of packaging strips. When the crossbeam as a whole moves, the applied pressure is transmitted to each row through multiple separate pressure plates, which helps to alleviate the problem of uneven pressure transmission caused by the deflection and deformation of the long crossbeam and improves the consistency of sealing pressure in each row.

[0008] Optionally, the pressure plate is elastically connected to the crossbeam via an elastic element.

[0009] By adopting the above technical solution, the introduction of elastic elements (such as springs, rubber blocks, etc.) helps each pressure plate to obtain independent pressure self-compensation capability. Even if there is slight deformation in the crossbeam itself, or slight differences in the thickness of the materials to be sealed in each row, the elastic elements can absorb some of the errors, which helps to make each pressure plate act on the packaging film with a more similar pressure, further improving the consistency of sealing pressure in each row.

[0010] Optionally, the pressure plate is provided with a guide rod, and the crossbeam is provided with a positioning hole that matches the guide rod.

[0011] By adopting the above technical solution, the precise fit between the guide rod and the positioning hole helps each pressure plate maintain a preset movement trajectory when pressure is applied, reducing the possibility of swaying or deflection, and helping to apply pressure more accurately to the predetermined sealing area, thereby improving the sealing accuracy.

[0012] Optionally, the pressure plate is provided with an adjustment device for adjusting the position of the pressure plate relative to the crossbeam.

[0013] By adopting the above technical solution, the function of independently adjusting the sealing pressure of each row is realized. Operators can finely adjust the pressure of individual pressure plates according to the process requirements of different products or the equipment status, so as to make the sealing strength of each row approach the ideal state. This improves the process adaptability of the equipment and the control capability of product quality, and responds to the need for adjustable clamping force in the background technology.

[0014] Optionally, the heating device includes a heating element configured to distribute the surface temperature of the heating device evenly.

[0015] By adopting the above technical solutions, in addition to improving the uniformity of pressure, further efforts are made to ensure the uniformity of heat supply. Uniform temperature is another key element for achieving high-quality heat sealing. This helps to form a more uniform temperature field on the surface of the heating device, thereby reducing sealing quality problems caused by temperature fluctuations.

[0016] Optionally, the driving device is provided with a plurality of driving rods, including a plurality of first driving rods and a plurality of second driving rods. The first driving rods are connected to the sealing plate, and the second driving rods are connected to the heating device. The first driving rods and the second driving rods are used to drive the sealing plate and the heating device to move, respectively.

[0017] By adopting the above technical solution, the driving of the pressurizing action and the heating action are separated. This design not only reflects functional decoupling, but also allows the motion sequence and motion parameters of the two to be controlled independently, making it possible to realize more complex sealing processes (such as pre-pressurization, pressure holding, etc.), and improving the control flexibility and functionality of the device.

[0018] Optionally, the heating device is provided with a protrusion that matches the pressure plate.

[0019] By adopting the above technical solution, heat and pressure are concentrated in the narrow area where a sealing line needs to be formed, which helps to achieve a more efficient seal, while the outline of the formed sealing line is clearer.

[0020] This application provides a sealing plate component, which adopts the following technical solution: A sealing plate for a multi-row horizontal sealing device includes a crossbeam and a plurality of pressure plates connected to the crossbeam, the pressure plates being configured to match the rows to be sealed.

[0021] By adopting the above technical solution, the crossbeam serves as a unified load-bearing and transmission platform, while each pressure plate independently corresponds to a row of packaging strips. When the crossbeam as a whole moves, the applied pressure is transmitted to each row through multiple separate pressure plates, which helps to alleviate the problem of uneven pressure transmission caused by the deflection and deformation of the long crossbeam and improves the consistency of sealing pressure in each row.

[0022] Optionally, the pressure plate is elastically connected to the crossbeam via an elastic element.

[0023] By adopting the above technical solution, the introduction of elastic elements (such as springs, rubber blocks, etc.) helps each pressure plate to obtain independent pressure self-compensation capability. Even if there is slight deformation in the crossbeam itself, or slight differences in the thickness of the materials to be sealed in each row, the elastic elements can absorb some of the errors, which helps to make each pressure plate act on the packaging film with a more similar pressure, further improving the consistency of sealing pressure in each row.

[0024] Optionally, the pressure plate is provided with a guide rod, and the crossbeam is provided with a positioning hole that matches the guide rod.

[0025] By adopting the above technical solution, the precise fit between the guide rod and the positioning hole helps each pressure plate maintain a preset movement trajectory when pressure is applied, reducing the possibility of swaying or deflection, and helping to apply pressure more accurately to the predetermined sealing area, thereby improving the sealing accuracy.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By adopting a modular design with crossbeams and multiple independent pressure plates, combined with elastic connections, the problem of uneven pressure in each column caused by the bending deformation of traditional integral crossbeams is effectively improved, and the consistency of sealing strength in each column is enhanced.

[0027] 2. By setting an adjustment device for the pressure plate, the sealing pressure of each row can be independently adjusted, which improves the process flexibility of the equipment and the ability to control product quality.

[0028] 3. Separating the pressure application function from the heating function reduces the impact of heat deformation on the pressure sealing plate and makes the pressure output more stable; at the same time, the independence of the functional modules also makes the process of maintenance and replacement of parts more convenient.

[0029] 4. The guide structure improves the accuracy of the pressure plate movement, and the independent drive provides the hardware foundation for complex process control, thus improving the overall control accuracy and reliability of the horizontal sealing process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the multi-row horizontal sealing device of this application.

[0031] Figure 2 This is a top view of the multi-row horizontal sealing device of this application.

[0032] Figure 3 This is a partial structural schematic diagram of the multi-row horizontal sealing device of this application.

[0033] Figure 4 This is a side view of the multi-row horizontal sealing device of this application.

[0034] Explanation of reference numerals in the attached figures: 10. Sealing plate; 11. Crossbeam; 12. Pressure plate; 13. Elastic element; 14. Guide rod; 15. Positioning hole; 20. Drive rod; 21. First drive rod; 22. Second drive rod; 30. Heating device; 31. Raised bar; 40. Mounting plate. Detailed Implementation

[0035] The following combination Figures 1 to 4 This application will be described in further detail.

[0036] This application discloses a multi-row horizontal sealing device. (Refer to...) Figure 1 This application provides a multi-row horizontal sealing device, which can be fixed to the mounting plate 40 of the equipment. The multi-row horizontal sealing device includes a driving device (not shown in the figure), a sealing plate 10, a driving rod 20, and a heating device 30. The sealing plate 10 and the heating device 30 are arranged opposite to each other and are respectively connected to the driving rod 20. The driving device is used to drive the driving rod 20 to move, thereby driving the sealing plate 10 and the heating device 30 to complete the sealing action.

[0037] Specifically, the sealing plate 10 includes a crossbeam 11 and a plurality of pressure plates 12 arranged along the length of the crossbeam 11. Each pressure plate 12 is connected to the crossbeam 11 via an elastic element 13 and a guide rod 14. The drive rod 20 can be divided into a first drive rod 21 and a second drive rod 22, wherein the first drive rod 21 is pulsatorically connected to the crossbeam 11 of the sealing plate 10, and the second drive rod 22 is pulsatorically connected to the heating device 30. The heating device 30 is provided with protrusions 31 corresponding to the positions of each pressure plate 12.

[0038] Reference Figure 2 The top view of the multi-row horizontal sealing device shows the overall layout of the sealing plate 10, the heating device 30, and the drive rod 20 on the mounting plate 40. From Figure 2 As can be seen, both the sealing plate 10 and the heating device 30 have widths adapted to multiple rows of packaging. The pressure plates 12 are arranged in an array on the sealing plate 10 and the heating device 30 to act simultaneously on multiple rows of packaging materials. Area A in the figure shows the detailed structure of a single horizontal sealing module in the sealing plate 10.

[0039] Reference Figure 2 and Figure 3 , Figure 3 A partial structure of the pressure sealing plate 10 is shown in detail. The guide rod 14 is fixed to the pressure plate 12, and the guide rod 14 is movably inserted into a positioning hole 15 in the crossbeam 11. The elastic element 13 (which may be a spring in this embodiment) is sleeved on the guide rod 14 and located between the pressure plate 12 and the crossbeam 11, applying a pre-support force to the pressure plate 12.

[0040] Refer again Figure 3The sliding engagement between the guide rod 14 and the positioning hole 15 provides precise up-and-down reciprocating motion guidance for the pressure plate 12, helping to prevent the pressure plate 12 from deflecting or wobbling under force. The presence of the elastic element 13 allows the pressure plate 12 to independently float elastically within its guide stroke when the crossbeam 11 is pressed down as a whole. Thus, each pressure plate 12 can adaptively apply pressure according to the actual thickness or slight differences of the material to be sealed beneath it, thereby compensating for any possible errors.

[0041] Reference Figure 4 The side view of the multi-row horizontal sealing device shows the lateral mounting relationship of the sealing plate 10, the heating device 30 and the drive rod 20 relative to the mounting plate 40, reflecting the compact layout of the device as a whole.

[0042] The implementation principle of a multi-row horizontal sealing device according to an embodiment of this application is as follows: the driving device drives the driving rod 20 to move. Specifically, the first driving rod 21 drives the sealing plate 10 to move, while the second driving rod 22 drives the heating device 30 to move in the opposite direction. During the movement of the sealing plate 10, the crossbeam 11, as an integral transmission platform, transmits the motion to multiple independent pressure plates 12. Due to the presence of the elastic element 13, each pressure plate 12, guided by the guide rod 14 and the positioning hole 15, can independently apply elastically compensated pressure to the packaging strips below. At the same time, the protrusions 31 on the heating device 30 provide the heat required for sealing. Ultimately, each pressure plate 12 and the corresponding protrusion 31 work together to complete a more uniform horizontal sealing operation of the multi-row packaging material with pressure and heat, thereby helping to improve the consistency of sealing quality.

[0043] This application also discloses a sealing plate for a multi-row horizontal sealing device, see reference. Figure 1 and Figure 3 The sealing plate is specifically the sealing plate 10 in the multi-row horizontal sealing device.

[0044] The sealing plate specifically includes a crossbeam 11 and a plurality of pressure plates 12 connected to the crossbeam 11. Each pressure plate 12 is configured to match the column to be sealed. In this embodiment, the pressure plate 12 is elastically connected to the crossbeam 11 by the elastic member 13 and guided by the cooperation of the guide rod 14 and the positioning hole 15.

[0045] In a preferred embodiment, the pressure plate 12 of the sealing plate may also be provided with an adjustment device (not shown in the figure) for adjusting the position or preload of the pressure plate 12 relative to the crossbeam 11. For example, the adjustment device may be an adjusting screw disposed between the crossbeam 11 and the pressure plate 12. By turning the adjusting screw, the initial compression of the elastic element 13 can be changed, thereby achieving fine and independent adjustment of the reference sealing pressure applied to each pressure plate 12. With this setting, the operator can compensate or set the sealing pressure of each row according to the production process requirements or equipment wear conditions, further improving the control accuracy of sealing quality and the environmental adaptability of the equipment.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-row horizontal sealing device, characterized in that, include A pressure sealing plate (10) for applying pressure to the bar to be sealed includes a crossbeam (11) and a plurality of pressure plates (12) connected to the crossbeam (11), the pressure plates (12) being configured to match the bar to be sealed; A heating device (30) is disposed opposite to the sealing plate (10) and is used to provide a heat source for the sealing process; The driving device is connected to the sealing plate (10) and the heating device (30) for driving the sealing plate (10) and the heating device (30) to move relative to each other to heat seal the strips.

2. The multi-row horizontal sealing device according to claim 1, characterized in that, The pressure plate (12) is elastically connected to the crossbeam (11) via an elastic element (13).

3. The multi-row horizontal sealing device according to claim 2, characterized in that, The pressure plate (12) is provided with a guide rod (14), and the crossbeam (11) is provided with a positioning hole (15) that matches the guide rod (14).

4. The multi-row horizontal sealing device according to claim 1, characterized in that, The pressure plate (12) is provided with an adjustment device for adjusting the position of the pressure plate (12) relative to the crossbeam (11).

5. A multi-row horizontal sealing device according to claim 1, characterized in that, The heating device (30) includes a heating element configured to distribute the surface temperature of the heating device (30) evenly.

6. A multi-row horizontal sealing device according to claim 1, characterized in that, The driving device is provided with a plurality of driving rods (20), including a plurality of first driving rods (21) and a plurality of second driving rods (22). The first driving rods (21) are connected to the pressure sealing plate (10), and the second driving rods (22) are connected to the heating device (30). The first driving rods (21) and the second driving rods (22) are used to drive the pressure sealing plate (10) and the heating device (30) to move respectively.

7. A multi-row horizontal sealing device according to claim 1, characterized in that, The heating device (30) is provided with a protrusion (31), which matches the pressure plate (12).

8. A sealing plate for use in a multi-row horizontal sealing device as described in any one of claims 1-7, characterized in that, include: Crossbeam (11); Multiple pressure plates (12) are connected to the crossbeam (11), and the pressure plates (12) are configured to match the columns to be pressed and sealed.

9. A sealing plate for a multi-row horizontal sealing device as described in any one of claims 1-7, as described in claim 8, characterized in that, The pressure plate (12) is elastically connected to the crossbeam (11) via an elastic element (13).

10. A sealing plate for a multi-row horizontal sealing device as described in any one of claims 1-7, as claimed in claim 8, characterized in that, The pressure plate (12) is provided with a guide rod (14), and the crossbeam (11) is provided with a positioning hole that matches the guide rod (14).

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