Peripheral heating corrugated roller structure

Abstract

The utility model provides a peripheral heating corrugated roller structure, which belongs to the technical field of corrugated roller structures and comprises a fixed aluminum core, an outer roller shell is sleeved outside the fixed aluminum core, the outer roller shell is connected with the fixed aluminum core in a relatively rotating manner, a plurality of groups of heating wire grooves are arranged on the outer surface of the fixed aluminum core, and electric heating wires are fixedly mounted in the heating wire grooves. The outer surface of the fixed aluminum core is in clearance fit with the inner surface of the outer roller shell, the electric heating wire is installed on the inner side of the outer roller shell through the fixed aluminum core, the outer roller shell is heated through the electric heating wire, no condensate water is formed in the heating process, and the problem caused by the condensate water can be avoided; besides, the electric heating wire is arranged on the inner side of the outer roller shell, namely, the electric heating wire is arranged on the periphery of the whole corrugated roller, so that the heat transfer distance is reduced, the heat loss in the transfer process is reduced, and more energy is saved.

Description

Technical Field

[0001] The utility model belongs to the corrugated roller structure technology, in particular to a peripheral heated corrugated roller structure. Background Art

[0002] The corrugating roller is the most important component of the corrugated board production equipment. When printing corrugated boxes, high-temperature steam is usually injected into the inside of the corrugating roller to increase the surface temperature of the corrugating roller. However, after the heat of the injected steam is absorbed by the corrugating roller, the steam will condense into water droplets and gather at the bottom of the corrugating roller. In order to prevent the collected water from lowering the temperature of the corrugating roller, a siphon is usually used to extract the water from the outside of the corrugating roller. However, the siphon cannot contact the corrugating roller, which makes it impossible for the water between the corrugating roller and the siphon to be discharged. The water continuously forms a water film on the inner wall of the corrugating roller, which affects the heat absorption of the corrugating roller, making it difficult to increase the temperature of the corrugating roller, and the printing effect becomes worse. In turn, the corrugating roller needs to reduce its speed to ensure the printing effect, and the production efficiency is reduced. Utility Model Content

[0003] Based on the above problems existing in the prior art, the utility model provides a peripherally heated corrugated roller structure, which includes a fixed aluminum core, the fixed aluminum core is covered with an outer roller shell, and the outer roller shell and the fixed aluminum core are relatively rotatably connected, the outer surface of the fixed aluminum core is provided with a plurality of groups of heating wire grooves, electric heating wires are fixedly installed in the heating wire grooves, and the outer surface of the fixed aluminum core and the inner surface of the outer roller shell are clearance-matched.

[0004] Among them, one end of the outer roller shell is provided with a transmission connecting shaft for installation on the single-sided machine, and the other end of the outer roller shell is an installation opening. The fixed aluminum core is inserted into the outer roller shell through the installation opening, and the outer surface of the outer roller shell is fixedly provided with a tungsten carbide protective layer.

[0005] Among them, one end of the fixed aluminum core inserted into the outer roller shell is the insertion end, and the other end is the exposed end; the heating wire grooves are grouped into two, and the two heating wire grooves in the group extend parallel to each other from the exposed end to the end of the insertion end and are connected to each other at the end of the insertion end. A continuous electric heating wire is installed in each group of heating wire grooves, the end diameter of the exposed end of the fixed aluminum core is smaller than the other end and forms an installation step, and the inner surface of the fixed aluminum core is coated with an insulation layer.

[0006] Among them, a terminal cover is fixedly installed on the installation step of the fixed aluminum core, a bead groove is provided on the circumferential side of the terminal cover, a plurality of sliding balls are slidably installed in the bead groove, a connecting ring is installed on the terminal cover for rotation through the sliding balls, a bead groove for sliding cooperation with the sliding balls is provided on the inner side of the connecting ring, the terminal cover, the plurality of sliding balls and the connecting ring cooperate to form a bearing structure, a thread is provided on the circumferential side of one end of the connecting ring close to the outer roller shell and is connected to the inner side of the outer roller shell through the thread, and a concave and convex rotating pattern is provided on the circumferential side of the other end of the connecting ring relative to the outer roller shell.

[0007] Wherein, a check bolt is arranged on the connecting ring, and the check bolt passes through the connecting ring and is fixedly connected to the outer roller shell.

[0008] Among them, the terminal cover is provided with a common terminal and two rotating terminals relative to the other end of the fixed aluminum core, one end of all the heating wires is electrically connected to the common terminal, the other end of half of the heating wires is electrically connected to one of the rotating terminals, and the other end of the other half of the heating wires is electrically connected to the other rotating terminal, and the heating wires connected to the two rotating terminals are arranged at intervals.

[0009] The utility model has the beneficial effects as follows: an electric heating wire is installed on the inner side of the outer roller shell through a fixed aluminum core, and the outer roller shell is heated by the electric heating wire. No condensed water is formed during the heating process, and problems caused by condensed water can be avoided. In addition, the electric heating wire is arranged on the inner side of the outer roller shell, which is equivalent to being arranged on the periphery of the entire corrugated roller, which reduces the heat transfer distance, reduces the heat loss during the transfer process, and is more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of a peripherally heated corrugated roller structure.

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of a peripherally heated corrugated roller structure from another angle.

[0012] Figure 3 yes Figure 2 Enlarged view of point A.

[0013] Figure 4 It is a three-dimensional structural diagram of a peripherally heated corrugated roller structure, with the outer roller shell hidden.

[0014] Figure 5 yes Figure 4 Enlarged view of point B.

[0015] Figure 6 yes Figure 4 Enlarged view of point C.

[0016] Figure 7 The invention is a cross-sectional structural diagram of a peripherally heated corrugated roller structure at one end where a terminal cover is installed.

[0017] Figure 8 An exploded view of a peripherally heated corrugated roller structure.

[0018] Fig. 9 yes Figure 8 Enlarged view of point D. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] As attached Figure 1-9A peripherally heated corrugated roller structure is shown, which includes a fixed aluminum core 1, which is covered with an outer roller shell 2. One end of the outer roller shell 2 is provided with a transmission connecting shaft 3 for installation on a single-sided machine. The transmission connecting shaft 3 is a round shaft and a rectangular bayonet is provided on both sides of the round shaft. The kinetic energy is transmitted through the rectangular bayonet. The other end of the outer roller shell 2 is an installation opening. The fixed aluminum core 1 is inserted into the outer roller shell 2 through the installation opening. The outer surface of the outer roller shell 2 is fixedly provided with a tungsten carbide protective layer 4 to improve the wear resistance of the outer roller shell 2. One end of the fixed aluminum core 1 inserted into the outer roller shell 2 is the insertion end, and the other end is the exposed end; the outer surface of the fixed aluminum core 1 is provided with sixteen groups of heating wire grooves 5, each group of heating wire grooves 5 contains two heating wire grooves 5, the two heating wire grooves 5 in the same group extend parallel to each other from the exposed end to the end of the insertion end and are connected to each other at the end of the insertion end, and each group of heating wire grooves 5 is installed with a continuous electric heating wire (not shown in the drawings), so that the electric heating wire forms a U-shaped structure with both ends at the exposed end, the end diameter of the exposed end of the fixed aluminum core 1 is smaller than the other end and forms an installation step 6, and the inner surface of the fixed aluminum core 1 is coated with a thermal insulation layer 7, which can prevent heat from being transferred to the inside of the corrugated roller, so that the heat can be fully utilized. A terminal cover 8 is fixedly installed on the installation step 6 of the fixed aluminum core 1, and a bead groove 9 is provided on the peripheral side of the terminal cover 8. A plurality of sliding balls 10 are slidably installed in the bead groove 9. A connecting ring 11 is rotatably installed on the terminal cover 8 through the sliding ball 10. The inner side of the connecting ring 11 is provided with a bead groove 9 that slides with the sliding ball 10. The terminal cover 8, the plurality of sliding balls 10 and the connecting ring 11 cooperate to form a bearing structure. The connecting ring 11 is provided with a thread on the peripheral side of one end close to the outer roller shell 2 and is connected to the inner side of the outer roller shell 2 through the thread, so that the outer roller shell 2 can be relatively rotatably connected with the fixed aluminum core 1 through the bearing structure, and the outer surface of the fixed aluminum core 1 and the inner surface of the outer roller shell 2 are gap-fitted, and the connecting ring 11 is provided with a concave-convex rotating pattern 12 on the peripheral side of the other end relative to the outer roller shell 2; the terminal cover 8 is provided with a common terminal 13 on the other end relative to the fixed aluminum core 1 and two rotating terminals 14, the common terminal 13 is located between the two rotating terminals 14, the common terminal 13 and the rotating terminal 14 are both provided with a wiring hole 15 for connecting the electric heating wire, the wiring hole 15 can adopt the structure of the wiring hole of a conventional socket, the common terminal 13 and the rotating terminal 14 are similar to conventional electrical components, and are provided with a metal conductive structure connecting the wiring hole 15 and an external power supply and corresponding contacts, one end of all the electric heating wires are electrically connected to the common terminal 13, the other end of half of the electric heating wires are electrically connected to one of the rotating terminals 14, and the other end of the other half of the electric heating wires are electrically connected to the other rotating terminal 14, the electric heating wires connected to the two rotating terminals 14 are arranged at intervals, the common terminal 13 is then electrically connected to one electrode, and the two rotating terminals 14 are respectively connected to the other electrode.

[0021] As a preferred embodiment, overlapping positioning bolt holes are provided on the ends of the connecting ring 11 and the outer roller shell 2 , and a check bolt 16 is installed in the positioning bolt hole. The check bolt 16 passes through the connecting ring 11 and is fixedly connected to the outer roller shell 2 .

[0022] When assembling the corrugated roller provided in this embodiment, the electric heating wire is first bent into a U shape, and then the two ends of the electric heating wire are respectively passed through the terminal cover 8 from one side of the fixed aluminum core 1 to the other side, and then the electric heating wire is pressed to be embedded in the heating wire groove 5, and finally the two ends of the electric heating wire are respectively connected to the rotating terminal 14 and the common terminal 13 to connect the electric heating wire to the power supply. After the sixteen electric heating wires are sequentially installed in the corresponding set of heating wire grooves 5, the fixed aluminum core 1 is inserted into the outer roller shell 2, and then the connecting ring 11 is rotated through the concave and convex rotating pattern 12 of the connecting ring 11, and the fixed aluminum core 1 is installed in the outer roller shell 2 using the connecting ring 11 and the anti-return bolt 16 is installed, and the assembly is completed.

[0023] When in use, the transmission connecting shaft 3 is connected to the driving structure, and the outer roller shell 2 is driven to rotate by the driving structure. At the same time, the terminal cover 8 is connected to the power supply through the wire. After the power switch is turned on, the outer roller shell 2 can be heated by the electric heating wire. At startup, all the electric heating wires can be controlled to be used simultaneously for rapid heating through an external controller. After reaching the specified temperature, half of the electric heating wires can be turned off, and only half of the electric heating wires are used for heating. After a period of use, the other half of the electric heating wires are replaced for heating, so that two groups of electric heating wires can be used in rotation, which can increase the service life.

[0024] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A peripherally heated corrugated roller structure, characterized in that: The invention comprises a fixed aluminum core (1), the fixed aluminum core (1) is covered with an outer roller shell (2), and the outer roller shell (2) and the fixed aluminum core (1) are connected to each other for relative rotation, a plurality of groups of heating wire grooves (5) are arranged on the outer surface of the fixed aluminum core (1), electric heating wires are fixedly installed in the heating wire grooves (5), and the outer surface of the fixed aluminum core (1) and the inner surface of the outer roller shell (2) are clearance-matched.

2. A peripherally heated corrugated roller structure according to claim 1, characterized in that: One end of the outer roller shell (2) is provided with a transmission connection shaft (3) for installation on a single-sided machine, and the other end of the outer roller shell (2) is a mounting opening, and the fixed aluminum core (1) is inserted into the outer roller shell (2) through the mounting opening, and the outer surface of the outer roller shell (2) is fixedly provided with a tungsten carbide protective layer (4).

3. A peripherally heated corrugated roller structure according to claim 2, characterized in that: One end of the fixed aluminum core (1) inserted into the outer roller shell (2) is the insertion end, and the other end is the exposed end; the heating wire grooves (5) are grouped in two, and the two heating wire grooves (5) in the group extend parallel to each other from the exposed end to the end of the insertion end and are connected to each other at the end of the insertion end. A continuous electric heating wire is installed in each group of heating wire grooves (5), the diameter of the exposed end of the fixed aluminum core (1) is smaller than the other end and forms an installation step (6), and the inner surface of the fixed aluminum core (1) is coated with a thermal insulation layer (7).

4. A peripherally heated corrugated roller structure according to claim 3, characterized in that: A terminal cover (8) is fixedly mounted on the mounting step (6) of the fixed aluminum core (1), a bead groove (9) is arranged on the peripheral side of the terminal cover (8), a plurality of sliding beads (10) are slidably mounted in the bead groove (9), a connecting ring (11) is rotatably mounted on the terminal cover (8) through the sliding beads (10), a bead groove (9) is arranged on the inner side of the connecting ring (11) and is slidably matched with the sliding beads (10), the terminal cover (8), the plurality of sliding beads (10) and the connecting ring (11) cooperate to form a bearing structure, a thread is arranged on the peripheral side of one end of the connecting ring (11) close to the outer roller shell (2) and is connected to the inner side of the outer roller shell (2) through the thread, and a concave-convex rotation pattern (12) is arranged on the peripheral side of the other end of the connecting ring (11) relative to the outer roller shell (2).

5. A peripherally heated corrugated roller structure according to claim 4, characterized in that: The connection ring (11) is provided with a non-return bolt (16), which passes through the connection ring (11) and is fixedly connected to the outer roller shell (2).

6. A peripherally heated corrugated roller structure according to claim 4 or 5, characterized in that: The terminal cover (8) is provided with a common terminal (13) and two rotating terminals (14) at the other end relative to the fixed aluminum core (1); one end of all the heating wires is electrically connected to the common terminal (13); the other end of half of the heating wires is electrically connected to one of the rotating terminals (14); the other end of the other half of the heating wires is electrically connected to the other rotating terminal (14); and the heating wires connected to the two rotating terminals (14) are arranged at intervals.

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