A printing carton folding anti-burst line softening treatment equipment

Abstract

The application discloses a printed carton bending anti-burst line softening treatment equipment, in particular to the technical field of corrugated carton processing equipment, which comprises a conveying line and a corrugated carton softening mechanism, the conveying line comprises a conveying roller platform, a mounting bracket, a corrugated carton softening platform and the corrugated carton softening mechanism, the top end of the mounting bracket is fixedly connected with the conveying roller platform, and the mounting bracket is provided with the corrugated carton softening platform between the conveying roller platforms. The contact wheel and the inner side wall of the paperboard jointly form a relatively closed steam contact cavity, steam is quantitatively injected into the cavity by the first steam conveying pipe; the micro environment limits the action range of the steam to the fiber area inside the indentation line, forming a treatment area completely isolated from the external printed cover; the high-frequency vibration of the ultrasonic wave drives water molecules into the junction between the fibers, and the top softening assembly is the same, the ultrasonic contact arc cover is pressed and attached to the inner side of the top indentation, and the steam circulates in the micro interface between the arc cover and the paperboard.

Description

Technical Field

[0001] This application relates to the technical field of corrugated cardboard box processing equipment, and more specifically, to a device for softening the explosion-proof line of a printed cardboard box. Background Technology

[0002] Corrugated cardboard boxes are widely used as outer packaging for products due to their advantages such as being lightweight, recyclable, and having good compression resistance. In the production process, flat corrugated cardboard needs to undergo a series of processes including die-cutting, creasing, and bending to finally form a cardboard box. Among these, the quality of the creasing lines and bending directly determines the appearance and structural strength of the cardboard box.

[0003] The existing publication number CN113665172B discloses a spray device for softening the anti-explosion lines of corrugated cardboard during scissor cutting. The device includes a machine tool, I-beams, a pressing device, a softening device, and a conveying device. I-beams are symmetrically installed at both ends of the machine tool, with the pressing device installed between the I-beams. The softening device is installed at the upper end of the I-beams, and the conveying device is installed on the side wall of the machine tool. This solves the problem that traditional spraying methods typically spray water droplets onto the surface of corrugated cardboard. Because the spraying direction is from top to bottom, the contact rate between the upper surface of the corrugated cardboard and the water droplets is high, and water penetration takes a certain amount of time. This results in a longer contact time between the water droplets and the upper layer of the corrugated cardboard, leading to a higher moisture content in the upper layer. Meanwhile, the lower layers of the corrugated cardboard, where only some water has penetrated, have a lower moisture content or are even not wetted, causing the anti-explosion lines to still appear inside and in the lower layers during folding. The inventors discovered the following problems with the existing technology during the development of this application:

[0004] For finished packaging boxes that need to be circulated and sold in the market, their outer surface is usually pre-printed with exquisite product patterns, manufacturer logos and other printed covers to serve as brand promotion and product descriptions. When the carton is bent and formed, the cardboard fibers at the crease line will break due to external force stretching, resulting in irregular cracks on the outside of the carton. This phenomenon is called cracking. Cracking directly damages the overall structural strength of the carton, and it can also directly tear and destroy the printed cover on the outer surface of the carton.

[0005] Currently, to reduce cracking, the industry commonly uses humidification and rehydration to pre-treat cardboard, spraying water mist onto the surface or placing it in a high-humidity environment. However, this method has significant drawbacks: First, moisture directly wets the outer surface of the carton, easily causing ink smudging, fading, or blurring of patterns on the printed cover, thus primarily damaging the appearance of the printed product. Second, the uniformity and penetration depth of the moisture are difficult to control, resulting in inconsistent softening effects, making it impossible to completely eliminate cracking and easily causing the cardboard to soften and lose strength.

[0006] Therefore, a softening treatment device for the explosion-proof line of printed carton bending is proposed to address the above problems. Summary of the Invention

[0007] In order to overcome the above-mentioned defects of the prior art, this application provides a printing carton bending explosion-proof line softening treatment device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this application provides the following technical solution: a printing carton bending explosion-proof line softening treatment device, including a conveyor line and a corrugated carton softening mechanism. The conveyor line includes a conveyor roller platform and a mounting bracket, a corrugated carton softening platform and a corrugated carton softening mechanism. The top of the mounting bracket is fixedly connected to the conveyor roller platform. The mounting bracket is located between the conveyor roller platforms and a corrugated carton softening platform is installed. The corrugated carton softening platform contains a corrugated carton softening mechanism.

[0009] The corrugated cardboard box softening mechanism includes a corrugated cardboard box side wall softening component and a corrugated cardboard box top wall softening component.

[0010] The corrugated cardboard box sidewall softening assembly further includes a connecting rod, ultrasonic mixing contact wheels, a first steam delivery pipe, and an amplitude recovery elastic groove 21. The connecting rod is fixedly connected to the first ultrasonic generator. The generating end of the connecting rod is connected to two sets of ultrasonic mixing contact wheels, and a steam contact cavity is reserved between the two sets of ultrasonic mixing contact wheels. An amplitude recovery elastic groove is connected between the connecting rod and the ultrasonic mixing contact wheels. The end of the fixed base is connected to the first steam delivery pipe. The corrugated cardboard box topwall softening assembly includes a fixed bracket, a fixed plate, a first docking bracket, and a second ultrasonic generator. The bottom of the fixed bracket is fixedly connected to the fixed plate, the bottom of the fixed plate is fixedly connected to the first docking bracket, and the bottom of the first docking bracket is fixedly connected to the second ultrasonic generator.

[0011] A separate conveyor platform is installed below the corrugated carton sidewall softening component. The separate conveyor platform includes a first conveyor frame and a second conveyor frame, which are placed parallel to each other, and a separation gap is reserved between the first conveyor frame and the second conveyor frame.

[0012] Preferably, the corrugated carton sidewall softening assembly includes a connecting bracket, a fixed base, and a first ultrasonic generator. The fixed base is fixedly connected to both sides of the connecting bracket, and the first ultrasonic generator is fixedly connected to the top of each fixed base. The corrugated carton topwall softening assembly also includes an ultrasonic contact bracket and a second steam delivery pipe. The ultrasonic contact bracket and the second ultrasonic generator are fixedly connected, and the second steam delivery pipe is connected to both sides of the ultrasonic contact bracket.

[0013] Preferably, the ultrasonic contact bracket includes a second docking bracket, with a steam storage cover fixedly connected to both sides of the second docking bracket, an ultrasonic oscillation probe fixedly connected to both sides of the inner wall of the steam storage cover, and an ultrasonic contact arc cover movably connected to the bottom end of the steam storage cover.

[0014] Preferably, the corrugated carton softening platform includes a support frame, and sealing plates are installed on all four sides of the support frame. The corrugated carton softening mechanism is located at the center of the support frame.

[0015] Preferably, both the upper and lower ends of the first and second conveyor frames are fixedly connected to assembly plates, and protective covers are fixedly connected to the edges of the assembly plates.

[0016] Preferably, a top plate is fixedly connected to the top of the assembly plate, and the top plate and the fixing bracket are fixedly connected.

[0017] The technical effects and advantages of this application are as follows:

[0018] 1. Compared with the prior art, this printing carton bending explosion-proof line softening treatment equipment uses a connecting rod to drive two sets of ultrasonic mixing contact wheels, which adhere to the preset crease lines on the left and right side walls from the inside of the carton blank. At this time, the contact wheels and the inner side walls of the cardboard together form a relatively closed steam contact cavity, and steam is quantitatively injected into this cavity by the first steam delivery pipe. This microenvironment restricts the range of steam action to the fiber area inside the crease line, forming a treatment area that is completely isolated from the external printed cover. The high-frequency vibration of the ultrasonic waves drives water molecules into the bonding points between the fibers. Similarly, the top softening component is pressed against the inside of the top crease, and the steam circulates in the micro-interface between it and the cardboard.

[0019] 2. Compared with existing technologies, this printing carton bending and explosion-proof line softening treatment equipment generates an ultrasonic cavitation effect when the high-frequency mechanical vibrations generated by the first and second ultrasonic generators act on the slightly steam-moistened crease line fibers through the ultrasonic mixing contact wheel and ultrasonic contact arc cover. Heat and water molecules are concentrated and injected into the hydrogen bond points between the fibers at the crease line, selectively weakening the fiber bonding force in that local area, making it easy to bend without breaking. Simultaneously, an amplitude recovery elastic groove is set between the connecting rod and the ultrasonic mixing contact wheel to absorb excessive impact amplitude and recover reflected energy through flexible contact, avoiding hard damage to the cardboard structure. Thus, while only softening the fibers in the crease line area and preventing the crease line from bursting, the bonding strength of the fibers in the remaining parts of the cardboard is maintained, ensuring that the carton still has excellent overall compressive strength and structural strength after forming. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the conveyor line structure of this application;

[0022] Figure 3 This is a schematic diagram of the corrugated cardboard box softening mechanism of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the split-type conveying platform of this application;

[0024] Figure 5 This is a first-view structural schematic diagram of the corrugated cardboard box sidewall softening component of this application;

[0025] Figure 6 This is a second-view structural schematic diagram of the corrugated cardboard box sidewall softening component of this application;

[0026] Figure 7 This is a structural schematic diagram of the corrugated cardboard box top wall softening component of this application;

[0027] Figure 8 This is a schematic diagram of the unfolded structure of the corrugated cardboard box top wall softening component of this application.

[0028] The attached figures are labeled as follows: 1. Conveyor line; 2. Conveyor roller platform; 3. Mounting bracket; 4. Corrugated carton softening platform; 5. Support frame; 6. Sealing plate; 7. Corrugated carton softening mechanism; 8. Protective cover; 9. Assembly plate; 10. Split conveyor platform; 11. Top plate; 12. First conveyor frame; 13. Second conveyor frame; 14. Corrugated carton side wall softening component; 15. Corrugated carton top wall softening component; 16. Connecting bracket; 17. Fixed base; 18. First ultrasonic generator; 19. Connecting rod; 20. Ultrasonic mixing contact wheel; 21. Amplitude recovery elastic groove; 22. First steam conveying pipe; 23. Fixed plate; 24. First docking bracket; 25. Second ultrasonic generator; 26. Ultrasonic contact bracket; 27. Second steam conveying pipe; 28. Second docking bracket; 29. ​​Steam storage cover; 30. Ultrasonic contact arc cover; 31. Ultrasonic oscillation probe; 32. Fixed bracket. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Example 1

[0031] As attached Figures 1 to 8 The illustrated printing carton bending explosion-proof line softening equipment includes a conveyor line 1 and a corrugated carton softening mechanism 7. The carton blank with the printed cover is fed from the previous station into the interior of the corrugated carton softening platform 4 via the conveyor roller platform 2. At this time, the bottom surface of the carton blank is supported by the split conveyor platform 10. The split conveyor platform 10 is composed of a first conveyor frame 12 and a second conveyor frame 13 arranged in parallel, with a separation gap reserved between them located exactly below the center line of the bottom of the carton. The corrugated carton is placed in this position with the printed cover facing outward. The conveyor line 1 includes a conveyor roller platform 2, a mounting bracket 3 and a corrugated carton softening platform 4. The top of the mounting bracket 3 is fixedly connected to the conveyor roller platform 2. The mounting bracket 3 is located between the conveyor roller platforms 2 and the corrugated carton softening platform 4 is installed. The corrugated carton softening mechanism 7 is placed inside the corrugated carton softening platform 4.

[0032] The corrugated carton softening mechanism 7 includes a corrugated carton side wall softening component 14 and a corrugated carton top wall softening component 15.

[0033] After positioning is completed, the corrugated carton sidewall softening component 14 begins to work. The first ultrasonic generator 18 on the fixed base 17 on both sides of the connecting bracket 16 operates; the connecting rod 19 drives the two sets of ultrasonic mixing contact wheels 20 at its end to fit into the preset indentation line areas on the left and right sides of the corrugated carton from the inside.

[0034] Example 2

[0035] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 8 As shown below, see details:

[0036] In a preferred embodiment, the corrugated carton sidewall softening assembly 14 includes a connecting bracket 16, a fixed base 17, and a first ultrasonic generator 18. The fixed base 17 is fixedly connected to both sides of the connecting bracket 16, and the first ultrasonic generator 18 is fixedly connected to the top of each fixed base 17. After the carton is positioned, the corrugated carton sidewall softening assembly 14 begins operation; the first ultrasonic generators 18 on both sides of the connecting bracket 16 are simultaneously activated, generating high-frequency vibrations of 20kHz to 40kHz; the vibrations are transmitted to the ultrasonic mixing contact wheels 20 via the connecting rod 19. The two ultrasonic mixing contact wheels 20 open from inside the carton and respectively adhere to the corrugated cardboard. Inside the pre-set crease line areas on the left and right walls of the box; simultaneously, the first steam delivery pipe 22 continuously injects low-pressure warm steam into the steam contact cavity; since the steam contact cavity is a relatively sealed microenvironment formed by two sets of contact wheels and the inner wall of the cardboard, the steam can only circulate within the cavity and wet the fibers in the crease line area, without diffusing outwards to contact the printed cover on the outer wall of the corrugated box; under the high-frequency cavitation effect and micro-jet action of the ultrasonic waves, steam water molecules are efficiently driven into the bonding points between fibers, rapidly increasing the water content and flexibility of the fibers at the crease line, selectively weakening their bonding force, so that they will not burst during subsequent bending.

[0037] In a preferred embodiment, the corrugated carton sidewall softening component 14 further includes a connecting rod 19, an ultrasonic mixing contact wheel 20, a first steam delivery pipe 22, and a fixing bracket 32. The connecting rod 19 is fixedly connected to the first ultrasonic generator 18. The first ultrasonic generator 18 generates high-frequency vibrations, which are transmitted to the ultrasonic mixing contact wheel 20 through the connecting rod 19. The steam is injected into the corrugated cardboard fiber layer at the crease through the flexible buffer of the amplitude recovery elastic groove 21. At the same time, the first steam delivery pipe 22 delivers a quantitative amount of 60°C warm steam to the steam contact cavity reserved between the two sets of ultrasonic mixing contact wheels 20. The steam contact cavity is a relatively closed microenvironment formed by the two sets of ultrasonic mixing contact wheels 20 and the inner sidewall of the cardboard. The steam circulates and wets the inner side of the crease line area within this cavity, rapidly increasing the moisture content and flexibility of the cardboard fibers without contacting or wetting the printed cover on the outer wall of the carton. The cavitation effect of ultrasound and the heating and toughening effect of steam work synergistically to selectively weaken the bonding force between fibers at the indentation line, making it easier to bend. The generating end of the connecting rod 19 is connected to two sets of ultrasonic mixing contact wheels 20, and a steam contact cavity is reserved between the two sets of ultrasonic mixing contact wheels 20. An amplitude recovery elastic groove 21 is connected between the connecting rod 19 and the ultrasonic mixing contact wheels 20. The end of the fixed base 17 is connected to the first steam delivery pipe 22. An amplitude recovery elastic groove 21 is connected in series between the connecting rod 19 and the ultrasonic mixing contact wheels 20. The amplitude recovery elastic groove 21 is composed of stacked spring sheets. When the connecting rod 19 transmits high-frequency longitudinal vibration, the amplitude recovery elastic groove 21 can absorb part of the excessive impact amplitude, so that the contact wheel and the cardboard maintain flexible contact, avoiding hard collision that could crush the cardboard. At the same time, it can reuse part of the reflected vibration energy, improving the ultrasonic transmission efficiency.

[0038] The end of the fixed base 17 is connected to the first steam delivery pipe 22, which is connected to an external steam generator and can quantitatively deliver warm steam of about 60°C to the steam contact cavity between the two sets of ultrasonic mixing contact wheels 20.

[0039] In a preferred embodiment, the corrugated carton top wall softening component 15 includes a fixed bracket 32, a fixed plate 23, a first docking bracket 24, and a second ultrasonic generator 25. The fixed plate 23 is fixedly connected to the bottom of the fixed bracket 32, the first docking bracket 24 is fixedly connected to the bottom of the fixed plate 23, and the second ultrasonic generator 25 is fixedly connected to the bottom of the first docking bracket 24. When the second ultrasonic generator 25 drives the ultrasonic contact bracket 26 to descend, the ultrasonic contact arc cover 30 movably connected to its bottom end has flexibility and elasticity. When it contacts the inner side of the slightly curved crease line, it can undergo a slight adaptive deformation under pressure, thereby conforming to the entire curved crease line area and ensuring that the ultrasonic energy is transmitted without dead angles. Even when facing the obstruction of the inner lining paper, the high-frequency vibration of the ultrasonic waves can penetrate the thin lining paper and directly act on the outer carton crease fibers that need to be softened.

[0040] In a preferred embodiment, the corrugated cardboard box top wall softening component 15 further includes an ultrasonic contact bracket 26 and a second steam delivery pipe 27. The ultrasonic contact bracket 26 and the second ultrasonic generator 25 are fixedly connected. The ultrasonic contact bracket 26 is connected to the second steam delivery pipe 27 on both sides. The ultrasonic contact bracket 26 is composed of a second docking bracket 28, a steam storage hood 29, an ultrasonic contact arc cover 30, and an ultrasonic oscillation probe 31. Two cover-shaped steam storage hoods 29 are symmetrically fixedly connected to both sides of the second docking bracket 28. An ultrasonic oscillation probe 31 is fixed to the left and right sides of the inner wall of each steam storage hood 29 through a bracket. The function of the probe is to directly apply ultrasonic vibration to the steam stored inside the hood.

[0041] In a preferred embodiment, the ultrasonic contact bracket 26 includes a second docking bracket 28. A steam storage hood 29 is fixedly connected to both sides of the second docking bracket 28. An ultrasonic oscillation probe 31 is fixedly connected to both sides of the inner wall of the steam storage hood 29. The probes directly apply ultrasonic vibration to the steam stored inside the hood. An ultrasonic contact arc cover 30 is movably connected to the bottom end of the steam storage hood 29. The bottom end of the steam storage hood 29 is movably connected to the ultrasonic contact arc cover 30 through a ball joint. The lower surface of the ultrasonic contact arc cover 30 is processed into an arc-shaped curved surface that adapts to the curvature of the top crease line of the carton. It can undergo adaptive elastic deformation under a certain pressure and perfectly fit the crease line. When the corrugated carton side wall softening component 14 is running, the corrugated carton top wall softening component 15 also enters the working state. The electric push rod on the fixed bracket 32 ​​drives the entire ultrasonic contact bracket 26 to move downward, so that the ultrasonic contact arc cover 30 presses against the arc-shaped crease line area on the inner side of the top of the carton. Even if the top of the carton is lined with corrugated core paper, the penetrating power of ultrasound can penetrate through the thin layer to reach the outer paper fibers that need to be softened. Subsequently, the second ultrasonic generator 25 is activated, and at the same time, the second steam delivery pipe 27 introduces warm steam into the steam storage hood 29. The ultrasonic oscillation probe 31 applies vibration energy to the steam in the steam storage hood 29, activating the steam molecules and forming a thin and uniform active water molecule film on the interface between the ultrasonic contact arc cover 30 and the cardboard. Under continuous ultrasonic oscillation, water molecules are quickly penetrated into the crease fiber layer, achieving softening of the top crease area. The entire process does not wet the printed layer on the outer surface of the carton. When the softening treatment of the side walls and the top is completed according to the preset time, each ultrasonic generator and steam delivery is automatically shut off, and the ultrasonic mixing contact wheel 20 and the ultrasonic contact arc cover 30 return to the initial position. The separate conveyor platform is restarted to send the softened carton blank out of the corrugated carton softening platform 4.

[0042] In a preferred embodiment, the corrugated carton softening platform 4 includes a support frame 5, with sealing plates 6 installed on all four sides of the support frame 5, and the corrugated carton softening mechanism 7 located at the center of the support frame 5.

[0043] In a preferred embodiment, a split conveying platform is installed below the corrugated carton sidewall softening component 14. The split conveying platform includes a first conveying frame 12 and a second conveying frame 13, which are placed in parallel with each other, and a separation gap is reserved between the first conveying frame 12 and the second conveying frame 13.

[0044] In a preferred embodiment, assembly plates 9 are fixedly connected to both the upper and lower ends of the first conveyor frame 12 and the second conveyor frame 13, and protective covers 8 are fixedly connected to the edges of the assembly plates 9.

[0045] In a preferred embodiment, a top plate 11 is fixedly connected to the top of the assembly plate 9, and the top plate 11 and the fixing bracket 32 ​​are fixedly connected.

[0046] The working process of this application is as follows: First, when softening the corrugated cardboard box, the corrugated cardboard box is placed into the conveyor roller platform 2 of the conveyor line 1. Then, the conveyor roller platform 2 transports the corrugated cardboard box and transports it into the interior of the corrugated cardboard box softening platform 4. It then contacts and transports the corrugated cardboard box through the split conveyor platform 10. Then, the photoelectric sensor inside the split conveyor platform 10 positions the corrugated cardboard box according to the positioning of the photoelectric sensor. At this time, the split conveyor platform 10 stops the corrugated cardboard box directly below the top wall softening component 15 of the corrugated cardboard box, and at the same time, the ultrasonic mixing contact wheel 20 of the side wall softening component 14 of the corrugated cardboard box contacts the side of the corrugated cardboard box. During the contact process, the corrugated cardboard box is in a moving state. At this time, the first ultrasonic generator 18 vibrates the ultrasonic mixing contact wheel 20, and at the same time, the first steam conveying pipe 22 releases steam to the center of the two sets of ultrasonic mixing contact wheels 20. At this time, the ultrasonic mixing contact wheel 20 will... The steam vibrates, vibrating the sides of the corrugated cardboard box it contacts while simultaneously injecting steam into the internal area of ​​the side paper. This reduces the contact area between the steam and the corrugated cardboard box. When the corrugated cardboard box stops below the top wall softening component 15, the top wall softening component moves downward and contacts the crease at the top of the corrugated cardboard box. Then, the second ultrasonic generator 25 and the second steam delivery pipe 27 operate simultaneously. At this time, the steam stored in the steam storage hood 29 is vibrated by the ultrasonic vibration probe 31, allowing the steam to adhere to the ultrasonic contact arc cover 30. The ultrasonic contact arc cover 30 then contacts the corrugated cardboard box, vibrating the crease area. Simultaneously, the steam adhering to the ultrasonic contact arc cover 30 is injected into the crease area of ​​the corrugated cardboard box, thus completing the softening process. The above describes the working principle of this printing cardboard box bending explosion-proof line softening treatment equipment.

Claims

1. A printing carton bending explosion-proof line softening treatment device, comprising a conveyor line (1) and a corrugated carton softening mechanism (7), characterized in that: The conveyor line (1) includes a conveyor roller platform (2), a mounting bracket (3) and a corrugated carton softening platform (4). The top of the mounting bracket (3) is fixedly connected to the conveyor roller platform (2). The mounting bracket (3) is located between the conveyor roller platforms (2) and the corrugated carton softening platform (4) is installed. The corrugated carton softening mechanism (7) is placed inside the corrugated carton softening platform (4). The corrugated carton softening mechanism (7) includes a corrugated carton side wall softening component (14) and a corrugated carton top wall softening component (15).

2. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 1, characterized in that: The corrugated carton sidewall softening assembly (14) includes a connecting bracket (16), a fixed base (17) and a first ultrasonic generator (18). The fixed base (17) is fixedly connected to both sides of the connecting bracket (16), and the first ultrasonic generator (18) is fixedly connected to the top of the fixed base (17).

3. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 2, characterized in that: The corrugated carton sidewall softening component (14) also includes a connecting rod (19), an ultrasonic mixing contact wheel (20), a first steam delivery pipe (22), and an amplitude recovery elastic groove (21). The connecting rod (19) is fixedly connected to the first ultrasonic generator (18). The generating end of the connecting rod (19) is connected to two sets of ultrasonic mixing contact wheels (20). A steam contact cavity is reserved between the two sets of ultrasonic mixing contact wheels (20). An amplitude recovery elastic groove (21) is connected between the connecting rod (19) and the ultrasonic mixing contact wheel (20). The end of the fixed base (17) is connected to the first steam delivery pipe (22).

4. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 3, characterized in that: The corrugated cardboard box top wall softening component (15) includes a fixed bracket (32), a fixed plate (23), a first docking bracket (24), and a second ultrasonic generator (25). The fixed plate (23) is fixedly connected to the bottom of the fixed bracket (32), the first docking bracket (24) is fixedly connected to the bottom of the fixed plate (23), and the second ultrasonic generator (25) is fixedly connected to the bottom of the first docking bracket (24).

5. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 4, characterized in that: The corrugated cardboard box top wall softening component (15) also includes an ultrasonic contact bracket (26) and a second steam delivery pipe (27). The ultrasonic contact bracket (26) and the second ultrasonic generator (25) are fixedly connected, and the second steam delivery pipe (27) is connected to both sides of the ultrasonic contact bracket (26).

6. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 5, characterized in that: The ultrasonic contact bracket (26) includes a second docking bracket (28), and a steam storage cover (29) is fixedly connected to both sides of the second docking bracket (28). An ultrasonic oscillation probe (31) is fixedly connected to both sides of the inner wall of the steam storage cover (29), and an ultrasonic contact arc cover (30) is movably connected to the bottom end of the steam storage cover (29).

7. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 1, characterized in that: The corrugated cardboard box softening platform (4) includes a support frame (5), and sealing plates (6) are installed on all four sides of the support frame (5). The corrugated cardboard box softening mechanism (7) is located at the center of the support frame (5).

8. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 4, characterized in that: A split conveying platform (10) is installed below the corrugated carton sidewall softening component (14). The split conveying platform (10) includes a first conveying frame (12) and a second conveying frame (13), with a separation gap reserved between the first conveying frame (12) and the second conveying frame (13).

9. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 8, characterized in that: The first conveyor frame (12) and the second conveyor frame (13) are both fixedly connected to the upper and lower ends of the assembly plate (9), and the edge of the assembly plate (9) is fixedly connected to the protective cover (8).

10. The equipment for softening the explosion-proof line of a printed carton bending process according to claim 9, characterized in that: The top of the assembly plate (9) is fixedly connected to a top plate (11), and the top plate (11) and the fixed bracket (32) are fixedly connected.

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