Energy-saving corrugating roller with internal absorption

Abstract

The utility model discloses an inner suction energy -conserving corrugated roller belongs to corrugated roller technical field, and this inner suction energy -conserving corrugated roller includes roller body, vacuum pump, adsorption pipeline, gas cylinder and self -cleaning device. Roller body is formed by the core shaft, end plate and annular baffle and is divided into a plurality of independent negative pressure chamber, and each chamber is connected with gas cylinder through independent negative pressure regulating valve, realizes the adsorption force accurate control of different area of roll face. For the problem that adsorption hole is easy to block, this inner suction energy -conserving corrugated roller is provided with the self -cleaning system that is composed of high -pressure gas source and airflow control valve, can periodically pass into high -pressure airflow and reverse blowing adsorption hole, effectively removes the blockage. The structure realizes the adsorption on demand through the sub -zone negative pressure regulation, and the energy consumption is reduced significantly, and simultaneously, utilizes the self -cleaning mechanism to guarantee that adsorption system is long -term stable operation, ensures that paper is flat and is pasted on the roll face, avoids the corrugated collapse, the bubble, the warping etc. Adverse problem of the corrugated due to adsorption force uneven or improper.

Description

Technical Field

[0001] This utility model relates to the field of corrugated roller technology, specifically an internal suction energy-saving corrugated roller. Background Technology

[0002] Corrugated cardboard is a common packaging material, typically used to make cartons and other packaging boxes. It consists of two layers of flat cardboard sandwiched together with a corrugated layer of paper. Corrugated cardboard has environmental advantages because it is primarily made from paper, a renewable resource. Furthermore, corrugated cardboard can be recycled, reducing the consumption of natural resources. As an important packaging material with good protective properties and environmental characteristics, corrugated cardboard is widely used in various fields. Its processing requires corrugated rollers used in conjunction with a single-facer.

[0003] In the production of corrugated cardboard, the corrugating roll is the core component for corrugation formation. To ensure that the thin and lightweight corrugated base paper can be stably bonded to the high-temperature roll surface during high-speed operation, preventing displacement, wrinkling, or springing, modern corrugating rolls generally employ negative pressure adsorption technology. However, the adsorption system under existing technology has revealed two interconnected and particularly prominent technical problems in long-term use: the susceptibility of the adsorption pores to clogging, and the resulting exacerbation of uneven and uncontrollable adsorption force. This seriously restricts further improvements in production efficiency and product quality. Utility Model Content

[0004] This utility model provides an internal suction energy-saving corrugated roller, which aims to solve the problems mentioned in the background art, such as the easy clogging of the adsorption holes in the prior art, and the resulting uneven and uncontrollable adsorption force.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an internal suction energy-saving corrugated roller, comprising a roller body, a vacuum pump, and an adsorption pipe; the roller body comprises a mandrel, end plates fixed at both ends of the mandrel, an outer roller shell fixed between the two end plates, and at least one annular partition fixed to the outer wall of the mandrel; the outer edge of the annular partition is sealed to the outer roller shell of the roller body, thereby forming at least two independent negative pressure chambers between the mandrel, the end plates, the annular partition, and the outer roller shell; each negative pressure chamber is connected to a distribution cylinder through an independent negative pressure regulating valve, the distribution cylinder is connected to the vacuum pump through the adsorption pipe, and the distribution cylinder is connected to the negative pressure chamber through a rotary joint; a plurality of adsorption holes are provided on the roller body surface area corresponding to each negative pressure chamber; and a self-cleaning device is also included, comprising a high-pressure air source and an airflow control valve disposed on the adsorption pipe, the airflow control valve being able to selectively connect the high-pressure air source to the adsorption pipe, so that the high-pressure airflow can flow in reverse through the adsorption holes.

[0006] Preferably, the end plate is provided with a connection port that communicates with each of the negative pressure chambers.

[0007] Preferably, the negative pressure regulating valve is an electric or pneumatic proportional valve that can receive external control signals to adjust its opening degree in real time and accurately.

[0008] Preferably, the airflow control valve is a two-position three-way solenoid valve, having a common terminal, an interface connected to a vacuum pump, and an interface connected to a high-pressure gas source.

[0009] Preferably, the adsorption holes on the roller surface are arranged in an axially parallel manner.

[0010] Preferably, the distribution density of adsorption holes located at both ends of the roller body is higher than that of adsorption holes in the middle region of the roller body.

[0011] Compared with existing technologies, this internal suction energy-saving corrugated roller has the following advantages:

[0012] 1. This utility model achieves "on-demand adsorption" through independent zone control, providing negative pressure only to areas with paper, thus completely eliminating unnecessary energy consumption. The energy-saving effect is very significant depending on the actual production width.

[0013] 2. This utility model can adjust the adsorption force of each area in real time and accurately through electric or pneumatic proportional valves, adapting to base paper of different weights and materials, ensuring that the paper is flatly attached to the roller surface, and avoiding problems such as corrugation collapse, bubbling, and warping caused by uneven or improper adsorption force.

[0014] 3. This utility model solves the maintenance pain point of easy clogging of the adsorption holes through the design of the self-cleaning device. It can automatically complete the cleaning without stopping the machine to disassemble the roller body, reducing downtime, improving equipment utilization and production efficiency, and also reducing the labor intensity and maintenance costs of workers. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of an internal suction energy-saving corrugated roller;

[0016] Figure 2 This is a schematic cross-sectional view of the roller body in an internal suction energy-saving corrugated roller.

[0017] In the picture:

[0018] 1. Roller body; 11. Mandrel; 12. End plate; 13. Outer roller shell; 14. Annular partition; 15. Negative pressure chamber; 151. Adsorption hole;

[0019] 2. Vacuum pump;

[0020] 3. Adsorption pipes;

[0021] 4. Negative pressure regulating valve;

[0022] 5. Distributor cylinder;

[0023] 6. Self-cleaning device; 61. High-pressure air source; 62. Airflow control valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This embodiment provides an internal suction energy-saving corrugated roller, such as Figures 1 to 2 As shown, the internal suction energy-saving corrugated roller includes a roller body 1, a vacuum pump 2, and an adsorption pipe 3. The roller body 1 includes a spindle 11, end plates 12 fixed at both ends of the spindle 11, an outer roller shell 13 fixed between the two end plates 12, and at least one annular partition 14 fixed to the outer wall of the spindle 11. The outer edge of the annular partition 14 is sealed to the outer roller shell 13 of the roller body 1, thereby forming at least two independent negative pressure chambers 15 between the spindle 11, the end plates 12, the annular partition 14, and the outer roller shell 13. Each negative pressure chamber 15 is controlled by an independent negative pressure. A regulating valve 4 is connected to a gas distribution cylinder 5, which is connected to the vacuum pump 2 via the adsorption pipe 3. The gas distribution cylinder 5 is connected to the negative pressure chamber 15 via a rotary joint. Each negative pressure chamber 15 has a plurality of adsorption holes 151 on its corresponding roller surface area. The device also includes a self-cleaning device 6, which includes a high-pressure air source 61 and an airflow control valve 62 on the adsorption pipe 3. The airflow control valve 62 can selectively connect the high-pressure air source 61 to the adsorption pipe 3, so that the high-pressure airflow can flow in reverse through the adsorption holes 151.

[0026] In one embodiment, the end plate 12 is provided with a connection port 121 that communicates with each of the negative pressure chambers 15.

[0027] In this embodiment, refer to Figure 2 The connection port 121 serves as the physical interface between the negative pressure chamber 15 and the external negative pressure pipeline and cleaning pipeline, enabling both vacuum adsorption and high-pressure cleaning functions to be connected to each negative pressure chamber 15 through a unified pipeline, thus simplifying the external system structure.

[0028] In one embodiment, the negative pressure regulating valve 4 is an electric or pneumatic proportional valve that can receive external control signals to adjust its opening degree in real time and accurately.

[0029] In this embodiment, refer to Figure 1 By employing electric or pneumatic proportional valves, external control signals can be received, enabling continuous and stepless opening adjustment, rather than a simple "on / off" state. This allows the system to adjust the vacuum level of each negative pressure chamber 15 in real time and precisely according to production needs.

[0030] In one embodiment, the airflow control valve 62 is a two-position three-way solenoid valve, having a common terminal, an interface connected to the vacuum pump 2, and an interface connected to the high-pressure gas source 61.

[0031] In this embodiment, refer to Figure 1 By connecting the common end of the airflow control valve 62 to the adsorption pipe 3, a normally open end to the vacuum pump 2, and a normally closed end to the high-pressure gas source 61, the system can reliably switch between the two working modes of "adsorption" and "cleaning".

[0032] In one embodiment, the adsorption holes 151 are arranged in an axially parallel manner on the surface of the roller body 1.

[0033] In this embodiment, refer to Figure 1 This arrangement is easy to process, and the adsorption force is distributed along the axis of the roller body 1, which can provide a stable and direct axial adsorption force, meeting the production needs under most standard working conditions.

[0034] In one embodiment, the distribution density of adsorption holes 151 located at both ends of the roller body 1 is higher than the distribution density of adsorption holes 151 in the middle region of the roller body 1.

[0035] In this embodiment, refer to Figure 1 By increasing the density of the adsorption holes 151 at both ends of the roller 1, more and denser adsorption points are provided under the same negative pressure, thereby significantly enhancing the edge adsorption force.

[0036] Working principle: First, the vacuum pump 2 is started, providing a negative pressure vacuum source to the entire system through the adsorption pipe 3 and the gas distribution cylinder 5. Then, zone control is implemented, with the gas distribution cylinder 5 distributing the negative pressure source to each independent negative pressure regulating valve 4. Each negative pressure regulating valve 4 independently controls a corresponding negative pressure chamber 15.

[0037] Operators can precisely adjust the opening of each negative pressure regulating valve 4 by sending commands to an external control system such as a PLC, based on the width, material, and speed of the corrugated cardboard being produced. For the negative pressure chamber 15 corresponding to the area covered by paper, the regulating valve opens or widens to establish a strong suction force, firmly adhering the paper to the roller surface through the suction holes 151 in that area, preventing it from shifting or wrinkling. For areas not covered by paper (such as wide-width rollers producing narrow-width cardboard), the corresponding negative pressure regulating valves 4 on both sides of the roller body 1 can be closed or their opening reduced, so that the chamber generates no or only a weak suction force.

[0038] When the adsorption holes 151 need cleaning to prevent clogging, the self-cleaning device 6 is activated. The airflow control valve 62 actuates, disconnecting the adsorption pipe 3 from the vacuum pump 2, while simultaneously connecting the high-pressure air source 61 to the adsorption pipe 3. During reverse purging, the high-pressure airflow passes through the air distribution cylinder 5 and the negative pressure regulating valve 4, enters each negative pressure chamber 15, and finally exits at high speed from the adsorption holes 151 on the surface of the roller 1. This reverse high-pressure airflow can effectively blow out impurities such as paper dust, dirt, and adhesive particles that are clogging the adsorption holes 151, achieving online cleaning without disassembly or production interruption, and maintaining the long-term efficient operation of the adsorption system.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An internal suction energy-saving corrugated roller, comprising a roller body (1), a vacuum pump (2), and an adsorption pipe (3); Its features are: The roller body (1) includes a spindle (11), end plates (12) fixed at both ends of the spindle (11), an outer roller shell (13) fixed between the two end plates (12), and at least one annular partition (14) fixed on the outer wall of the spindle (11). The outer edge of the annular partition (14) is sealed to the outer roller shell (13) of the roller body (1), thereby forming at least two independent negative pressure chambers (15) between the mandrel (11), the end plate (12), the annular partition (14) and the outer roller shell (13). Each of the negative pressure chambers (15) is connected to a gas distribution cylinder (5) via an independent negative pressure regulating valve (4). The gas distribution cylinder (5) is connected to the vacuum pump (2) via the adsorption pipe (3). The gas distribution cylinder (5) is connected to the negative pressure chamber (15) via a rotary joint. Each of the negative pressure chambers (15) has a number of adsorption holes (151) on the surface area of ​​the roller (1). It also includes a self-cleaning device (6), which includes a high-pressure gas source (61) and an airflow control valve (62) disposed on the adsorption pipe (3). The airflow control valve (62) can selectively connect the high-pressure gas source (61) to the adsorption pipe (3) so that the high-pressure airflow can flow in reverse through the adsorption hole (151).

2. The internal suction energy-saving corrugated roller according to claim 1, characterized in that: The end plate (12) is provided with a connection port (121) that communicates with each of the negative pressure chambers (15).

3. The internal suction energy-saving corrugated roller according to claim 1, characterized in that: The negative pressure regulating valve (4) is an electric or pneumatic proportional valve that can receive external control signals to adjust its opening degree in real time and accurately.

4. The internal suction energy-saving corrugated roller according to claim 1, characterized in that: The airflow control valve (62) is a two-position three-way solenoid valve with a common terminal, an interface connected to the vacuum pump (2), and an interface connected to the high-pressure gas source (61).

5. The internal suction energy-saving corrugated roller according to claim 1, characterized in that: The adsorption holes (151) are arranged in an axially parallel manner on the surface of the roller (1).

6. The internal suction energy-saving corrugated roller according to claim 1, characterized in that: The distribution density of adsorption holes (151) located at both ends of the roller body (1) is higher than that of adsorption holes (151) in the middle region of the roller body (1).

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