Paper container bottom sealing device

Abstract

The utility model discloses a paper container bottom sealing device, and relates to the technical field of paper container bottom sealing devices, the paper container bottom sealing device comprises a machine body, the machine body is connected with a sleeving part, a bottom supporting mechanism and an electromagnetic induction heater, the sleeving part is used for sleeving a cup body, and the bottom supporting mechanism is used for bearing a cup bottom; the sleeving piece and the bottom supporting mechanism can move relative to each other to enable the cup bottom to be arranged in the cup body, and the electromagnetic induction heater and the sleeving piece can move relative to each other to abut against and heat and weld the surface coatings of the cup body and the cup bottom. The cup bottom can be arranged in the cup body through cooperation of the sleeving piece and the bottom supporting mechanism, and the electromagnetic induction heater is used for abutting against, heating and welding the surface coating of the cup body and the surface coating of the cup bottom. The problems that a conventional hot air heating mode is high in energy consumption and uneven in heating, poor bottom sealing or paper bottom wall damage is easily caused, accurate control is difficult, and the sealing performance is affected are solved, the bottom sealing operation of the paper container is effectively completed, and the bottom sealing effect of the paper container is improved.

Description

Technical Field

[0001] This application relates to the technical field of paper container bottom sealing devices, and in particular to a paper container bottom sealing device. Background Technology

[0002] Paper containers, such as paper cups and bowls, are manufactured by coating raw paper with a film, printing it, cutting it into fan-shaped sheets, rolling the fan-shaped sheets into a cylindrical cup body, and then hot-pressing the die-cut cup bottom to the cup body. More specifically, the cup bottom is first placed inside the cup body, then heated with hot air to melt the coating layer, and finally knurled and pressed to bond the cup body and bottom together. However, the common method of sealing paper containers using hot air heating is energy-intensive and results in uneven heating, easily leading to poor sealing or damage to the paper bottom wall. Furthermore, the sealing process is difficult to control accurately, affecting the airtightness.

[0003] Therefore, it is necessary to provide a paper container bottom sealing device to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this application is to provide a paper container bottom sealing device to improve the sealing effect of paper containers.

[0005] The paper container bottom sealing device provided in this application adopts the following technical solution: it includes a body, the body is connected to a sleeve, a bottom support mechanism and an electromagnetic induction heater, the sleeve is used to fit the cup body, the bottom support mechanism is used to support the cup bottom, the sleeve and the bottom support mechanism can move relative to each other so that the cup bottom is placed in the cup body, the electromagnetic induction heater and the sleeve can move relative to each other to press and heat the surface coating of the cup body and the cup bottom to weld.

[0006] By adopting the above technical solution, the cooperation between the sleeve and the bottom support mechanism can realize that the bottom of the cup is placed in the cup body, and the electromagnetic induction heater is used to press and heat the surface coating of the cup body and the bottom of the cup to weld it. This avoids the problems of high energy consumption, uneven heating, easy to cause poor sealing or damage to the paper bottom wall, and difficulty in accurately controlling the sealing performance of conventional hot air heating methods. It effectively completes the sealing operation of paper containers and improves the sealing effect of paper containers.

[0007] Optionally, the sleeve has at least a metal layer on its outer surface.

[0008] By adopting the above technical solution, the electromagnetic field generated by the electromagnetic induction heater can effectively heat the metal material and efficiently fuse the surface coating, thereby improving heating efficiency and shortening heating time, and also ensuring uniform heating and excellent sealing quality.

[0009] Optionally, the bottom support mechanism includes a drive member connected to the body and a support portion connected to the drive member. The support portion is used to support the bottom of the cup, and the drive member can drive the support portion to move relative to the sleeve.

[0010] By adopting the above technical solution, the driving component of the bottom support mechanism drives the bearing part to move relative to the sleeve part, which can conveniently place the cup bottom on the bearing part into the cup body. In conjunction with the electromagnetic induction heater, the surface coating of the cup body and the cup bottom is pressed and heated to fuse. This avoids the problems of high energy consumption and uneven heating of conventional hot air heating methods, and solves the problems of poor bottom sealing, damage to the paper bottom wall and the impact on sealing performance.

[0011] Optionally, the electromagnetic induction heater is a high-frequency heater.

[0012] By adopting the above technical solution, the high-frequency heater provides more efficient and uniform heating to the surface coating, which allows for precise control of the welding depth, strengthens the bottom sealing bond strength, avoids excessive heating or carbonization of the paper, and improves water resistance and structural strength.

[0013] Optionally, the electromagnetic induction heater includes a moving mechanism connected to the body and an electromagnetic induction heating head connected to the moving mechanism. The moving mechanism can drive the electromagnetic induction heating head to move, and the electromagnetic induction heating head is used to heat and weld the surface coating of the cup body and the bottom of the cup.

[0014] By adopting the above technical solution, the moving mechanism drives the electromagnetic induction heating head to move, which enables the bottom sealing process to be carried out quickly and reliably.

[0015] Optionally, the electromagnetic induction heating head is located radially outside the moving mechanism, and the moving mechanism can drive the electromagnetic induction heating head to move toward the bottom support mechanism, so that the electromagnetic induction heating head and the bottom support mechanism clamp the cup body and the cup bottom.

[0016] By adopting the above technical solution and applying uniform pressure, we can ensure a solid weld and a good seal.

[0017] Optionally, the moving mechanism can also drive the electromagnetic induction heating head to move circumferentially around the base support mechanism.

[0018] By adopting the above technical solution, the contact area between the electromagnetic induction heating head and the cup body is increased, thereby improving the welding effect between the cup body and the bottom of the cup, which in turn improves the sealing performance.

[0019] Optionally, the moving mechanism can also move the electromagnetic induction heating head to at least three welding corner positions in the circumferential direction of the base support mechanism.

[0020] By adopting the above technical solutions, we can avoid missed welding dead zones and improve the integrity of the seal and the reliability of the process.

[0021] Optionally, the bottom support mechanism further includes an outer ring member, the driving member is a spreading member, the bearing part includes a plurality of outer support members arranged around the spreading member, the electromagnetic induction heater includes a plurality of electromagnetic induction heating heads, the plurality of electromagnetic induction heating heads are respectively disposed on the plurality of outer support members, the outer support members can move and squeeze the plurality of outer support members to move radially away from each other, so that the plurality of electromagnetic induction heating heads and the outer ring member clamp against the cup body and the cup bottom.

[0022] By adopting the above technical solution, simultaneous multi-point heating is achieved and the stability of the bottom sealing is enhanced.

[0023] Optionally, the supporting member is provided with multiple extrusion ramps, and all the outer supporting members are provided with sliding ramps, the sliding ramps abutting against the extrusion ramps.

[0024] By adopting the above technical solution, the mechanism can be opened and accurately positioned, simplifying the structure and increasing its repeated service life.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. The combination of the sleeve and the bottom support mechanism enables the cup bottom to be placed in the cup body, and uses an electromagnetic induction heater to press and heat the surface coating of the cup body and the cup bottom to fuse them. This avoids the problems of high energy consumption, uneven heating, poor sealing or damage to the paper bottom wall, and difficulty in accurately controlling the sealing performance of conventional hot air heating methods. It effectively completes the sealing operation of paper containers and improves the sealing effect of paper containers.

[0027] 2. The electromagnetic field generated by the electromagnetic induction heater can effectively heat the metal material, thereby efficiently fusing the surface coating, improving heating efficiency and shortening heating time, and also ensuring uniform heating and excellent sealing quality. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0029] Figure 2 This is a schematic diagram of the overall structure after the support part of Embodiment 1 of this application has been moved.

[0030] Figure 3 This is an exploded view of Embodiment 2 of this application.

[0031] Figure 4 This is a cross-sectional view of Embodiment 2 of this application.

[0032] Figure 5This is a schematic diagram of the overall structure after the support member in Embodiment 2 of this application has been moved.

[0033] Explanation of reference numerals in the attached drawings: 1. Body; 2. Sleeve component; 3. Bottom support mechanism; 31. Drive component; 311. Spreading component; 3111. Extrusion ramp; 32. Bearing part; 321. Outer support component; 3211. Sliding ramp; 33. Outer ring component; 4. Electromagnetic induction heater; 41. Moving mechanism; 42. Electromagnetic induction heating head; 5. Cup body; 6. Cup bottom. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail.

[0035] This application discloses a paper container bottom sealing device.

[0036] Example 1

[0037] Combination Figure 1 and Figure 2 As shown, the device includes a body 1, which is connected to a sleeve 2, a bottom support mechanism 3, and an electromagnetic induction heater 4. The sleeve 2 is on which the cup body 5 rests, and the bottom support mechanism 3 supports the cup bottom 6. The bottom support mechanism 3 and the sleeve 2 are movable relative to each other, allowing the cup bottom 6 to be placed within the cup body 5. The electromagnetic induction heater 4 and the sleeve 2 are also movable relative to each other, providing pressure and heating to weld the surface coatings of the cup body 5 and the cup bottom 6. Therefore, energy consumption and cost can be significantly reduced, and the sealing process of paper containers is fast and reliable.

[0038] Combination Figure 1 and Figure 2 As shown, the machine body 1 can be a machine base for manufacturing paper containers (which may include the manufacturing of the cup body 5 and the cup bottom 6, or other mechanisms or devices in the paper container manufacturing process), or a part for installing at least one of the sleeve 2, the bottom support mechanism 3, and the electromagnetic induction heater 4 (which may include the machine body, the ground, the wall, or other fixed foundation). The sleeve 2 has at least a metal layer on its outer surface, which is made of metal material, and the sleeve 2 as a whole may also be made of metal material. The electromagnetic field generated by the electromagnetic induction heater 4 can effectively heat the metal material, thereby efficiently fusing the surface coating, improving heating efficiency and shortening heating time, and providing uniform heating and excellent bottom sealing quality.

[0039] Combination Figure 1 and Figure 2As shown, the base support mechanism 3 includes a drive component 31 mounted on the machine body 1 and a support portion 32 connected to the drive component 31. The drive component 31 can be an electric cylinder, and the support portion 32 is fixedly connected to the output end of the electric cylinder. The support portion 32 supports the cup bottom 6, and the drive component 31 can drive the support portion 32 to move relative to the sleeve 2, so that the cup bottom 6 can be moved into and supported in the cup body 5, which is beneficial to the stability and yield of the subsequent heating and welding process of the surface coating of the cup body 5 and the cup bottom 6.

[0040] Combination Figure 1 and Figure 2 As shown, the electromagnetic induction heater 4 is, for example, a high-frequency heater. This high-frequency heater provides more efficient and uniform heating to the surface coating, allowing for precise control of the welding depth, strengthening the bottom sealing bond, preventing excessive heating or carbonization of the paper, and improving water resistance and structural strength. Specifically, the electromagnetic induction heater 4 includes a moving mechanism 41 mounted on the body 1 and an electromagnetic induction heating head 42 connected to the moving mechanism 41. The moving mechanism 41 can move the electromagnetic induction heating head 42 to the desired bottom sealing position. The electromagnetic induction heating head 42 heats and welds the surface coatings of the cup body 5 and the cup bottom 6, enabling a fast and reliable bottom sealing process. In this embodiment, the electromagnetic induction heating head 42 is located radially outside the bottom support mechanism 3. The moving mechanism 41 can move the electromagnetic induction heating head 42 towards the bottom support mechanism 3, so that the electromagnetic induction heating head 42 clamps the cup body 5 and the cup bottom 6 within the bottom support mechanism 3, simultaneously applying uniform pressure to ensure a reliable weld and good seal. Preferably, the moving mechanism 41 can also drive the electromagnetic induction heating head 42 to move along the circumference of the bottom support mechanism 3. For example, the moving mechanism 41 can also drive the electromagnetic induction heating head 42 to move to at least three welding corners in the circumference of the bottom support mechanism 3 to achieve full circumferential bottom sealing welding (the welding part may also have some overlap), avoid missing welding dead corners, and improve sealing integrity and process reliability.

[0041] The implementation principle of the paper container bottom sealing device in Embodiment 1 of this application is as follows:

[0042] The cooperation between the support part 32 and the drive part 31 allows the cup bottom 6 to be moved into and supported in the cup body 5. The moving mechanism 41 can drive the electromagnetic induction heating head 42 to move to the required bottom sealing position. The electromagnetic induction heating head 42 heats and welds the surface coating of the cup body 5 and the cup bottom 6, enabling the bottom sealing process to be carried out quickly and reliably.

[0043] Example 2

[0044] The difference between this embodiment and Embodiment 1 is that, in combination with Figure 3 , Figure 4 and Figure 5As shown, the bottom support mechanism 3 also includes an outer ring member 33, the driving member 31 is a spreading member 311, and the bearing part 32 includes multiple outer support members 321 arranged around the spreading member 311. Multiple electromagnetic induction heating heads 42 are respectively disposed on the multiple outer support members 321, with each electromagnetic induction heating head 42 corresponding to one of the outer support members 321. The spreading member 311 can move and squeeze the multiple outer support members 321 to move radially away from each other, so that the multiple electromagnetic induction heating heads 42 and the outer ring member 33 clamp the cup body 5 and the cup bottom 6, enabling simultaneous multi-point heating and strengthening the stability of the bottom sealing. Preferably, the moving mechanism 41 can also drive the electromagnetic induction heating heads 42 to move along the circumference of the bottom support mechanism 3. In detail, the supporting member 311 has multiple extrusion ramps 3111, and each outer support member 321 has a sliding ramp 3211. The sliding ramp 3211 abuts against the extrusion ramp 3111, and each outer support member 321 can automatically slide under the extrusion of the supporting member 311 to achieve expansion and precise positioning, simplify the mechanism structure and improve the service life.

[0045] 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 paper container bottom sealing device, characterized in that: The device includes a body (1), which is connected to a sleeve (2), a bottom support mechanism (3) and an electromagnetic induction heater (4). The sleeve (2) is used to fit the cup body (5), and the bottom support mechanism (3) is used to support the cup bottom (6). The sleeve (2) and the bottom support mechanism (3) can move relative to each other so that the cup bottom (6) is placed in the cup body (5). The electromagnetic induction heater (4) and the sleeve (2) can move relative to each other to press and heat the surface coating of the cup body (5) and the cup bottom (6).

2. The paper container bottom sealing device according to claim 1, characterized in that: The sleeve (2) has at least a metal layer on its outer surface.

3. The paper container bottom sealing device according to claim 1, characterized in that: The bottom support mechanism (3) includes a drive member (31) connected to the body (1) and a support part (32) connected to the drive member (31). The support part (32) is used to support the bottom of the cup (6). The drive member (31) can drive the support part (32) to move relative to the sleeve (2).

4. The apparatus of claim 1 wherein: The electromagnetic induction heater (4) is a high-frequency heater.

5. The paper container bottom sealing device according to any one of claims 1-4, characterized in that: The electromagnetic induction heater (4) includes a moving mechanism (41) connected to the body (1) and an electromagnetic induction heating head (42) connected to the moving mechanism (41). The moving mechanism (41) can drive the electromagnetic induction heating head (42) to move. The electromagnetic induction heating head (42) is used to heat and weld the surface coating of the cup body (5) and the cup bottom (6).

6. The paper container bottom sealing device according to claim 5, characterized in that: The electromagnetic induction heating head (42) is located radially outside the moving mechanism (41). The moving mechanism (41) can drive the electromagnetic induction heating head (42) to move toward the bottom support mechanism (3), so that the electromagnetic induction heating head (42) and the bottom support mechanism (3) clamp the cup body (5) and the cup bottom (6).

7. The paper container bottom sealing device according to claim 6, characterized in that: The moving mechanism (41) can also drive the electromagnetic induction heating head (42) to move circumferentially around the base support mechanism (3).

8. The paper container bottom sealing device according to claim 7, characterized in that: The moving mechanism (41) can also drive the electromagnetic induction heating head (42) to move to at least three welding corners in the circumferential direction of the base support mechanism (3).

9. The paper container bottom sealing device according to claim 3, characterized in that: The bottom support mechanism (3) also includes an outer ring (33), the driving member (31) is a spreading member (311), the bearing part (32) includes a plurality of outer support members (321) arranged around the spreading member (311), the electromagnetic induction heater (4) includes a plurality of electromagnetic induction heating heads (42), the plurality of electromagnetic induction heating heads (42) are respectively disposed on the plurality of outer support members (321), the outer support members (321) can move and squeeze the plurality of outer support members (321) to move radially away from each other, so that the plurality of electromagnetic induction heating heads (42) and the outer ring (33) clamp the cup body (5) and the cup bottom (6).

10. The paper container bottom sealing device according to claim 9, characterized in that: The supporting member (311) is provided with a plurality of squeezing inclined surfaces (3111), and all the outer supporting members (321) are provided with sliding inclined surfaces (3211), and the sliding inclined surfaces (3211) abut against the squeezing inclined surfaces (3111).

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