TWI384508B - The process of paper insulation - Google Patents

Description

Paper insulation barrel process

The invention relates to a process for an insulation cylinder, in particular to a paper insulation cylinder process suitable for wet-rolling and rounding.

Please refer to FIG. 1 , which is a schematic diagram of a conventional transformer. As shown, the transformer 9 includes a plurality of coils 91. The coils 91 are usually made of a good conductor, such as a copper wire. The coil 91 further includes a main coil and a secondary coil (not shown). The main coil is electrically connected to the main coil. The principle of electromagnetic induction enables the secondary coil to induce alternating current, and because the number of turns of the primary coil and the secondary coil are different, the voltage induced by the secondary coil can be different from that of the primary coil.

Of course, the surface of the coil 91 is covered with an insulator 92 to protect the coil 91, and the insulator 92 is usually made of paper. If the transformer is large, it is an insulating cylinder made of thick cardboard to cover the outside of the coil 91. .

Please refer to FIG. 2 , which is a process for immersing the cardboard into the pool. As shown in the figure, before the cardboard 93 is made into the insulating cylinder, the cardboard 93 has a certain thickness and is not easily bent. Therefore, the fiber inside the cardboard 93 needs to be bent. Softened to make the insulation barrel. Among them, the softening method is to immerse the cardboard in water, and the conventional method is to put the cardboard 93 into the water tank 94 to be macerated.

During the process of the cardboard 93 being placed in the pool 94 to be macerated, the cardboard 93 absorbs a large amount of moisture, and the moisture inhaled by the cardboard 93 is not easily controlled. If the excessive moisture is absorbed, the cardboard 93 is made into an insulating cylinder and wrinkles, if inhaled. Too little water makes the cardboard 93 easy to crack, it is difficult to maintain good process quality, and too much water is used, resulting in waste.

Furthermore, since the cardboard 93 inhales a large amount of moisture, the weight of the cardboard 93 after immersion in water requires four operators to lift, and the relative production efficiency is not high.

In addition, since the conventional process only estimates the length required for the cardboard 93 to be made into an insulating cylinder, the excess head and tail of the cardboard 93 need to be cut in the insulating cylinder, resulting in waste of material.

Therefore, a process that can control good quality, energy saving, environmental protection, and reduce manpower is urgently needed to improve the above disadvantages.

The invention relates to a process for producing a paper insulation cylinder, comprising the following steps:

(A) providing a cardboard, the cutting size of the cardboard is calculated according to the total length required to manufacture an insulating cylinder;

(B) wetting the board with water mist;

(C) rolling the cardboard into a cylindrical shape;

(D) Glued cylindrical cardboard corresponds to the side edges of the contact.

Since the cutting size of the cardboard has been accurately calculated, there is no material waste, and the process can also save a lot of water, and also save manpower, in addition to environmental protection, energy saving and production efficiency.

Wherein the required cutting size of step (A) comprises calculating the shrinkage margin of the paperboard. The shrinkage margin is the shrinkage factor of the cardboard by one of the design dimensions of the cardboard. The amount of water required to wet the paperboard in step (B) is the maximum amount of water that does not cause the cardboard to wrinkle when the cardboard is bent. Step (C) is to roll the cardboard by a roller machine.

The process of the paper insulation cylinder, wherein after the step (D), the method further comprises a step (E) of drying the insulating cylindrical paperboard. In addition, the drying process of step (E) includes a dry drying process and a drying process.

Referring to FIG. 3, FIG. 4, and FIG. 5, FIG. 3 is a process for wetting paperboard with water mist according to a preferred embodiment of the present invention, and FIG. 4 is a cardboard for rolling into a cylinder according to a preferred embodiment of the present invention. Process, Figure 5 is a flow chart of a preferred embodiment of the present invention.

As shown in the figure, the embodiment is a process of a paper insulation cylinder, comprising the following steps: step (A) provides a paperboard 1, the long side cutting size L2 of the paperboard 1, and the wide side cutting size L2' Calculate the long side and the total length of the wide side required to make an insulation barrel.

Since the water mist 2 wets the paperboard 1, the long side design dimension L of the paperboard 1 and the wide side design size L' expand, and the long side design dimension L and the wide side design size L when drying the insulated tubular paperboard 1 'It will shrink, so the calculation of the required long side cutting size L2 and the wide side cutting size L2' of the cardboard 1 should include the long side shrinkage allowance L1 of the cardboard 1, and the wide side shrinkage allowance L1'.

Wherein, the long-side contraction margin L1 is a designing dimension L of one of the long sides of the cardboard 1 multiplied by the contraction coefficient of the long side of the cardboard 1, and the wide-side contraction margin L1' is a design of the wide side of the cardboard 1 by the size L' The shrinkage factor of the wide side of the upper board 1.

The long side cut size L2 is the long side design size L plus the long side shrinkage margin L1, and the wide side cut size L2' is the wide side design size L' plus the wide side shrinkage allowance L1'.

Since the cutting size L2, L2' calculated by the cardboard 1 made of the insulating cylinder has been accurately calculated in advance, it is not necessary to cut the cylinder, so that no material is wasted.

Step (B) wets the paperboard 1 with a water mist 2, wherein the amount of water required to wet the paperboard 1 is the maximum amount of water when the cardboard 1 is not wrinkled according to the curved cardboard 1. Since this step is carried out by spraying the water mist 2, a large amount of water can be saved, and the humidity required for the paperboard 1 in the process can be controlled without being excessively wet or wet.

At the same time, since the cardboard 1 does not absorb a large amount of water, the weight of the wetted cardboard 1 can be lifted by two operators, thereby reducing the manpower and reducing labor costs.

In the step (C), the paperboard 1 is rolled into a cylindrical shape. As shown in Fig. 4, the paperboard 1 is rolled by a roller machine 3. After the completion of the rolling, the side edges corresponding to the corresponding contact of the insulating cardboard paper 1 are glued in step (D), in this case, the first side edge 11 and the second side edge 12 are glued.

The cylindrical paperboard 1 is then dried in step (E). The drying process includes a dry drying process and a drying process. The cylindrical paperboard 1 can be placed in a drying oven during the drying process. Finally, the tubular paperboard 1 is oil immersed with insulating oil to complete the manufacture of the insulating cylinder.

Since the cutting size L2 and L2' of the paperboard 1 have been accurately calculated, there is no waste of material, and a large amount of water can be saved in the process, and manpower is saved, in addition to environmental protection, energy saving and production efficiency.

The process of the paper insulation cylinder described in the first paragraph of the patent application, including the above-mentioned embodiments, is only for the convenience of description, and the scope of the claims claimed herein is based on the scope of the patent application. It is not limited to the above embodiment.

1. . . cardboard

11. . . First side edge

12. . . Second side edge

2. . . Water fog

3. . . Roller machine

L. . . Long side design size

L’. . . Wide side design size

L1. . . Long side shrinkage margin

L1’. . . Wide-side shrinkage margin

L2. . . Long side cutting size

L2’. . . Wide side cut size

9. . . transformer

91. . . Coil

92. . . Insulator

93. . . cardboard

94. . . pool

Figure 1 is a schematic diagram of a conventional transformer.

Figure 2 is a process for immersing cardboard in a pool.

3 is a process for wetting a paperboard with a water mist according to a preferred embodiment of the present invention.

Figure 4 is a process for forming a cardboard roll into a cylinder in accordance with a preferred embodiment of the present invention.

Figure 5 is a flow diagram of a preferred embodiment of the present invention.

1. . . cardboard

2. . . Water fog

L. . . Long side design size

L’. . . Wide side design size

L1. . . Long side shrinkage margin

L1’. . . Wide-side shrinkage margin

L2. . . Long side cutting size

L2’. . . Wide side cut size

Claims (6)

A process for producing a paper insulation cylinder, comprising the steps of: (A) providing a paperboard, the cutting size of the paperboard is calculated according to the total length required to manufacture an insulation cylinder; (B) wetting the paperboard with a water mist; (C Rolling the paperboard into a cylindrical shape; and (D) bonding the cylindrical shape of the corresponding side edge of the paperboard; wherein the amount of water required to wet the paperboard in the step (B) is based on bending the paperboard The maximum amount of water that does not cause the board to wrinkle. The process for producing a paper insulation cylinder according to claim 1, wherein the cutting size calculated in the step (A) comprises calculating a shrinkage margin of the paperboard. The process for producing a paper insulation cylinder according to claim 2, wherein the shrinkage margin is multiplied by a shrinkage factor of the paperboard by a design size of the paperboard. The process for producing a paper insulation cylinder according to claim 1, wherein the step (C) is rolling the paperboard by a roller machine. The process of the paper insulation cylinder of claim 1, further comprising a step (E) of drying the cylindrical paperboard. The process for producing a paper insulation cylinder according to claim 5, wherein the drying process of the step (E) comprises a dry drying and a drying process.