CN104841725B - Rolling method for head-to-tail connection of jaw cylinder - Google Patents

Abstract

The present invention is a coiling method for connecting the head and the tail of a jaw-type reel, comprising: after the previous steel coil is coiled, the pinch roller is pressed down and the tail of the steel coil and strip stays at about 12 o'clock of the clock; Thread the head of the strip on the lower layer of the tail of the previous steel coil, and fix the position of the head between the outermost circle and the penultimate circle of the tail of the previous steel coil; make the steel coil thread forward to the belt The steel head reaches the top of the interlayer until it is slightly arched; the reel is turned upside down to make the tail of the steel coil fall out for a certain distance; Insert it into the interlayer of the previous steel coil on the reel, so that the manual biting length reaches the length of at least 2 turns of the previous steel coil on the reel; make the strip head of the previous steel coil pass through the contact friction between the interlayers completely. Fixed so that the incoming coil is coiled by automatic cut-in tension. The invention solves the contradiction that the period of forming small rolls is short and the period of equipment unloading is long, and improves the production efficiency.

Description

Coiling method of head-to-tail connection of jaw type reel

technical field

The invention relates to a strip steel coiling method for a reel of a winding machine, in particular to a coiling method for connecting the head and the tail of a jaw type reel.

Background technique

Most of the coiling units are basically equipped with jaw-type reels. Each time the coil is coiled, the head of the steel coil is required to be placed in the jaws, and the jaws are tightened to clamp the head of the strip before coiling. In the production process, it takes a certain period of time for the roll unloading trolley to return to the original position after delivering the roll, so there is a phenomenon that the roll unloading trolley waits for unloading.

Taking a 2050 type hot-rolled tempering unit as an example, after the strip passes through the entrance walking beam, feeding trolley, uncoiler, strip tempering machine and is divided into cutting and coiling machines to produce a coil of steel strip, its unloading The coiling process needs to go through the unloading trolley in place, the trolley rises, the support arm opens, the reel is unloaded, the unloading trolley sends the coil to the exit walking beam, the walking beam closes, the coil unloading trolley sends the steel coil to the walking beam and returns A series of steps such as positioning, that is, as shown in Figure 1, the unloading operation process after the jaws are bitten and rolled into a roll is as follows:

①The unloading trolley is in place and the trolley rises;

②The support arm is opened, the roll is unloaded, and the unloading trolley sends the roll to the exit walking beam;

③The unloading trolley rotates counterclockwise;

④The exit walking beam advances to pick up coils;

⑤Exit the walking beam and send the roll back;

⑥The unloading trolley rotates clockwise;

⑦The roll unloading trolley returns to its position.

The unloading of the next steel coil can only be carried out after the unloading trolley is in place. The coil unloading trolley has a long cycle from unloading to returning to its position, while the steel coil head and tail often need to collect small coils as tail coils (a degraded product) due to quality reasons, and the coiling cycle is generally short. In this way, it takes a long time from the beginning of unloading to the return of the unloading trolley, and the rhythm is faster when producing small rolls, so there is a common phenomenon of stopping and waiting for unloading, resulting in a decrease in operating efficiency and a waste of time. For example, when three steel coils are produced continuously, one tail coil is collected at the head and the tail of the steel coil, and one genuine product is collected in the middle; a total of 9 coils need to be unloaded during production to produce 3 genuine coils and 6 tail coils. The coiling cycle is shorter than the unloading cycle, and 6 of them will stop and wait for the unloading, which will cause a decrease in production efficiency and a waste of time.

Contents of the invention

The purpose of the present invention is to provide a winding method of head-to-tail connection of a jaw type reel, which solves the contradiction that the cycle of small rolls is short and the cycle of equipment unloading is long, and avoids such problems. A drop in production efficiency.

Technical scheme of the present invention is as follows:

A coiling method for connecting the head and the tail of a jaw-type reel, including the step of making the head of the previous steel coil and strip enter the jaws of the reel to bite into and fix it, and then coiling, and also includes the following steps:

The first step: After the previous steel coil is rolled, press down the pinch roller and stop the tail of the steel coil at about 12 o'clock in the clock;

Step 2: Make the strip head of the next steel coil pass through the pinch roller and the steering roller, and then continue to thread the strip forward, thread the strip head on the lower layer of the strip tail of the previous steel coil, and make the head position It is fixed between the outermost circle and the penultimate circle at the tail of the previous steel coil; the steel coil is threaded forward until the head of the strip reaches the top of the interlayer, and the strip steel that is threaded begins to arch slightly;

Step 3: Reverse the reel so that the tail of the steel coil on the reel can be poured out for a certain distance;

Step 4: Manually turn the reel forward for coiling, bite the head of the next steel coil into the interlayer of the previous steel coil on the reel through the pinch roller, so that the manual biting length reaches the reel The length of the previous steel coil is at least 2 turns;

Step 5: When the head of the strip steel coil is completely bitten into the previous steel coil for at least 2 turns, the strip steel head of the previous steel coil is completely fixed by the contact friction force between the interlayers, so that it can be connected by automatic cutting tension The steel coil is coiled.

In the third step, the reel is reversed so that the steel coil tail on the reel is poured out of a distance of 5-10 meters.

The at least 2 turns described in the fourth step and the fifth step are 2 turns.

The beneficial effects of the present invention are:

The head-to-tail connection coiling method can solve the problem that the head and tail of the steel coil generally need to be collected to separate from the genuine product due to quality reasons, so as to realize the merger of the tail and tail coils of the steel coil and the head and tail coils of the next steel coil Collecting together at the end, so that the two unloading cycles are effectively shortened to one unloading cycle, which effectively improves the production efficiency of the unit, and the effect of this method is more obvious for the coiling unit with a faster production rhythm.

Description of drawings

Fig. 1 is the schematic diagram of existing coil unloading process;

Fig. 2 is the schematic diagram of the first step of the coiling method of the end-to-end connection of the jaw type reel of the present invention;

Fig. 3 is the second step schematic diagram of the coiling method of the jaw type reel head-to-tail connection of the present invention;

Fig. 4 is a schematic diagram of the third step of the winding method of the end-to-end connection of the jaw type reel of the present invention;

Fig. 5 is a schematic diagram of the fourth step of the winding method of the end-to-end connection of the jaw type reel according to the present invention.

detailed description

In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. First of all, it should be noted that the present invention is not limited to the following specific embodiments. Those skilled in the art should understand the present invention from the spirit embodied in the following embodiments, and each technical term can be optimized based on the spirit of the present invention. broad understanding.

The winding method of the end-to-end connection of the jaw type reel according to an embodiment of the present invention, as shown in Fig. 2 to Fig. 5, comprises the following steps:

The first step: Coil the previous steel coil in a conventional way: make the head of the strip steel enter the jaws of the reel, bite into it and fix it, and then coil it; Leave the tail of the steel coil at about 12 o'clock.

Step 2: make the strip head of the next steel coil pass through the pinch roller and the steering roller and continue to thread the strip forward, and thread the strip head on the lower layer of the strip tail of the previous steel coil, as shown in Figure 3. And fix the position of the head between the outermost circle and the penultimate circle at the tail of the previous steel coil; make the steel coil thread forward until the strip head reaches the top of the interlayer, and the threaded strip begins to arch slightly;

The third step: as shown in Figure 4, the reel is reversed so that the tail of the steel coil on the reel is poured out a long distance of 5-10 meters;

Step 4: Manually turn the reel forward for coiling, and bite the head of the next steel coil into the interlayer of the previous steel coil on the reel through the pinch roller, as shown in Figure 5, manually The biting length reaches the length of 2 turns of the previous steel coil on the reel;

Step 5: When the head of the strip steel coil completely bites into the previous steel coil for 2 turns, the strip steel head of the previous steel coil is completely fixed by the contact friction force between the interlayers, so that the automatic cutting tension can be used to match the incoming steel coil. Steel coils are coiled.

The 5-10 meter long distance described in the third step, and the 2 circles described in the fourth step and the fifth step are only illustrative and not limiting, because they do not violate the spirit of the present invention. Circumstances, changes can also be made.

In summary, the present invention replaces the original method in which steel coils must be coiled through the jaws without increasing equipment, and creates a brand-new coiling method: by making the tail of the previous steel coil and The head of the next steel coil is connected and coiled, so that the two unloading processes of steel coils can be combined into one unloading process, which effectively saves the cycle waiting for coil unloading and improves production efficiency. The faster the winding unit, the more obvious the effect.

This method can be used in a hot-rolled 2050-type tempering unit and slitting unit. Taking the tempering unit as an example, it takes about 20 minutes to produce a 1-slit steel coil and collect the tail coil at the same time. The head-to-tail connection coil is used It can save about 5 minutes by reducing one time of unloading, and can increase production efficiency by 25%.

It should be understood that after reading the above teaching content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (3)

1. A coiling method for the head-to-tail connection of a jaw-type reel, comprising making the previous steel coil strip steel head enter the reel jaws to bite into the fixed rear coiling, it is characterized in that it also includes the following steps: The first step: After the previous steel coil is rolled, press down the pinch roller and stop the tail of the steel coil at about 12 o'clock in the clock; Step 2: Make the strip head of the next steel coil pass through the pinch roller and the steering roller, and then continue to thread the strip forward, thread the strip head on the lower layer of the strip tail of the previous steel coil, and make the head position It is fixed between the outermost circle and the penultimate circle at the tail of the previous steel coil; the steel coil is threaded forward until the head of the strip reaches the top of the interlayer, and the strip steel that is threaded begins to arch slightly; Step 3: Turn the reel upside down so that the tail of the steel coil on the reel can be poured out for a certain distance; Step 4: Manually turn the reel forward for coiling, bite the head of the next steel coil into the interlayer of the previous steel coil on the reel through the pinch roller, so that the manual biting length reaches the reel The length of the previous steel coil is at least 2 turns; Step 5: When the head of the strip steel coil is completely bitten into the previous steel coil for at least 2 turns, the strip steel head of the previous steel coil is completely fixed by the contact friction force between the interlayers, so that it can be connected by automatic cutting tension The steel coil is coiled. 2. The coiling method of the end-to-end connection of the jaw type reel according to claim 1, wherein in the third step, the reel is turned upside down so that the steel coil tail on the reel is poured out from a distance of 5-10 meters long distance. 3. The winding method for end-to-end connection of jaw type reels according to claim 1 or 2, characterized in that the at least 2 turns described in the fourth step and the fifth step are 2 turns.