JPH0211493B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an unwinder device that unwinds a web wound on a web roll and feeds it to a super calender, etc., and particularly relates to an unwinder device that unwinds a web wound on a web roll and feeds it to a super calender or the like. This invention relates to a novel unwinder device which separates a roll from a web roll support stand, supplies a new web roll onto the web roll support stand, and splices the web from the old web roll to the new web roll.

[Prior Art] FIG. 4 shows an example of a conventional unwinder device. As shown in the figure, a web roll 2 with a web 1 wound thereon is rotatably supported on a web roll support 3, so that the web 1 is fed out to a super calender or the like (not shown). A spool support 4 is installed behind the web roll support 3 to support the spool 7 that has been completely fed out. When all the webs 1 are unwound from the web roll 2 on the web roll support stand 3, the rail 6 is raised and the spool 7 is rolled from the web roll support stand 3 onto the spool support stand 4. ing. Above spool 7
A new web roll 2 is placed on the web roll support 3 from which the spool 7 has been removed, and the spool 7 transferred onto the spool support 4 is carried out from the spool support 4 by a crane or the like.

[Problems to be Solved by the Invention] However, in the above-mentioned unwinding device, first, all the web 1 is unwound from the web roll (old web roll) 2 on the web roll support stand 3, and the spool 4 is moved to the spool support stand. Since the new web roll 2 cannot be supplied onto the web roll support 3 until it has been transferred onto the web roll 4, it takes a lot of time to switch from the old web roll 2 to the new web roll 2, and continuous operation is interrupted. It was impossible.

Moreover, each time the web rolls are switched, a new web must be manually passed through a supercalender, etc., which not only requires labor and time, but also causes a large amount of web loss.

[Object of the Invention] The present invention has been made to solve the problems of the prior art described above, and its purpose is to quickly switch from an old web roll to a new web roll without waiting for the old web roll to be carried out; By splicing the web from the old web roll to the new web roll, the new web can be quickly and easily passed through a super calender, etc. without the need for manual intervention.By opening the nip when passing through the paper splicing section, the new web can be passed through the splicing section without paper breakage. An object of the present invention is to provide an unwinder device that can be operated and can greatly improve productivity.

[Summary of the Invention] In order to achieve the above object, the present invention provides a web roll support stand that supports bearings at both ends of the spool of a web roll in order to feed the web to a super calender, etc. A dolly has a pair of rails arranged at its rear end and pushes the bearings at both ends of the new web roll carried in and moves it along the rails to a support stand, and an elevating frame is attached to a column that stands vertically in front of the support stand. A support arm is provided so as to be able to rise and fall and appear and retract from the support stand side through the support arm, which moves up and down from the support stand while supporting the bearings at both ends of the old web roll whose winding diameter has become smaller, and the web of the old web roll on the support arm. It is equipped with a pressing roller that presses the new web roll onto the new web roll and connects it to the starting end of the new web roll.

[Example] An example of the present invention will be described below in detail based on the accompanying drawings.

The unwinder device according to the present invention is shown in FIGS. 1 to 3.
As shown in the figure, the side surface is L-shaped, and the web roll supporting stand 10 is arranged at the corner part, the web roll separating means 11 and the web joining means 12 are arranged at the vertical part, and the web roll supporting stand 10 is arranged at the horizontal part. It mainly consists of a new web roll transfer means 13. Web roll 2 is placed on spool 7, web 1
It is made by winding up. The web roll support stand 10 has a holder 14 that supports bearing portions at both ends of the spool 7 of the web roll 2, and is adapted to feed the web 1 to a super calender (not shown) in the front through between both supports 28, which will be described later.
The holder 14 is formed with the web roll transfer means 13 side and upper side open, and the web roll support base 10 has bearing portions at both ends of the spool 7 of the web roll 2 transferred by the new web roll transfer means 13. A pressing lever 15 for fixing to the holder 14 is rotatably attached with a pin 16 and is rotatably operated by a cylinder 17.

The new web roll transfer means 13 has a pair of rails 18 that support bearings at both ends of the spool 7 of the new web roll 2 and guide them to the web roll support stand 10. The rail 18 is mounted substantially horizontally on the support frame 19 with a slight downward inclination toward the carry-in end.

A stopper 60 that locks both end bearings of the spool 7 of the web roll 2 is provided at the carry-in end of the rail 18, and a holding lever that clamps and releases the both end bearings of the spool 7 between it and the stopper 19. 20 is rotatably supported by a pin 21, and an operating cylinder 22 is connected to the holding lever 20. Rail 1 in the support frame 19
The part along line 8 is made of a hollow frame, and within this frame is a push arm 23 that pushes and transfers the bearing portions at both ends of the spool 7 of the web roll 2 supplied to the carry-in end toward the web roll support base 10. 24 are provided so as to be freely movable, and the trolley 24 is an endless chain 2 that is stretched between both ends of the support frame 19 in the longitudinal direction via a sprocket 25.
6. In FIG. 3, 27 is a motor that drives the chain 26.

The web roll separating means 11 includes an elevating frame 29 that is supported in a vertically movable manner by a pair of pillars 28 that are vertically provided in front of the web roll support stand 10. A support arm 30 is attached to the web roll support base 10 by a cylinder 31 to support the bearing portions at both ends of the spool 7 of the web roll 2 whose winding diameter has become smaller due to the unrolled web roll from below, and to separate the web roll support arm 30 from the web roll support base 10. It is installed so that it can move horizontally to the side. The support arm 30 has a roller 31 that rotatably supports the lower surface of the coupling portion at both ends of the spool 7.
is attached, and a roller 31 is installed to suppress the rotation of the web roll 2 so that the web 1 does not slacken.
A brake 50 is attached to the. In order to move the elevating frame 29 up and down, both supports 2
8 has a drive shaft 3 having a motor 32 at one end.
3 is stretched horizontally, and an endless lifting chain 36 that supports the lifting frame 29 is hung between the driving sprocket 34 attached to the drive shaft 33 and the driven sprocket 35 attached to the lower end of the support column 28. It has been passed.

In addition, when the tension of the web 1 is maintained by the brake 50, when the tension decreases or the web 1 becomes slack, one of the supports 28 is used to supplementally apply tension to the web 1. An L-shaped lever 38 that is rotatably operated by a cylinder 37 is attached with a pin, and a friction roller 39 that is pressed against one end of the spool 7 of the web roll 2 is rotatably attached to the tip of this L-shaped lever 38. ing.
The friction roller 39 is rotated at low speed by a motor 40 attached to the main column 28 via chains 41 and 42.

On the other hand, the web splicing means 12 has a pair of web splicing levers 44 rotatably supported via a shaft 43 spanned between both supports 28. , a press roller 45 rotates to support the web 1 fed out forward from the web roll 2 supported by the support arm 30 through both supports 28 and press it onto the web roll 2 on the web roll support stand 10. installed as possible. Adhesive is applied in advance to the starting end of the web 1 on the web roll 2 on the web roll support stand 10, and the web 1 fed forward from the web roll 2 on the support arm 30 is pressed onto this adhesive. Both webs are connected by pressing with rollers 45.

A rotation operation cylinder 46 is connected to the web splicing lever 44, and a cutter 47 for cutting the web 1 stretched between the press roller 45 and the web roll 2 on the support arm 30 is connected to the cylinder 48. Therefore, it is provided so as to be able to freely rotate back and forth on the pressure roller 45.

Next, we will discuss the effect.

When the web 1 is fed out to a calendar (not shown) and the winding diameter of the web roll 2 on the web roll support stand 10 becomes small, the support arm 30 of the elevating frame 29, which was waiting below, is protruded and used for elevating. It is raised by driving the chain 36. The support arm 30 supports the coupling portions at both ends of the spool 7 of the web roll 2, separates it from the holder 14 of the web roll support stand 10, and moves the web roll 2 upward. The support arm 30 waits until a new web roll 2 is supplied onto the web roll support stand 10 while allowing the web roll 2 to rotate at the highest position on the support column 28.

On the other hand, a new web roll 2 is carried into the carry-in end on the rail 18 by a crane or the like, and when transferring this new web roll 2 onto the web roll support stand 10, the holding lever 20 is first rotated in the release direction. , the push arm 23 of the trolley 24 is moved by the drive of the chain 26 to move the new web roll 2 onto the rail 18.
The web roll is transferred to the web roll support stand 10 while being rolled along the web roll support table 10. Then, by rotating the pressing lever 15, both end bearing portions of the spool 7 of the new web roll 2 are fixed onto the holder 14.

Next, when performing web splicing, the old web roll 2 is rotated at a reduced speed by pressing the coupling of the spool 7 of the old web roll 2 on the support arm 30 while rotating the friction roller 39 at a low speed. Web joining means 1
The new web roll 2 is pressed by the pressure roller 45 of No. 2. Since the surface of the starting end of the web 1 of the new web roll 2 is coated with adhesive in advance, the web 1 of the old web roll 2 can be connected to the starting end of the new web roll 2 by pressing with the pressure roll 45. become.

Next, by protruding the cutter 47, the web 1 stretched between the pressing roller 45 and the old web roll 2 is cut. As a result, the web splicing is completed, and the web 1 is unwound from the new web roll 2 by being pulled by the preceding web 1.
Therefore, the web 1 can be quickly and easily passed through the calender without requiring any manual labor. Continuous operation of the calendar is now possible, greatly improving productivity. Furthermore, since the web 1 can be continuously passed through the calender automatically and mechanically, there is less loss of the web 1 than when it is done manually.

In addition, by performing the web splicing as described above, the web splicing can be performed quickly without waiting for the web 1 of the old web roll 2 to become empty, and after the web splicing, the web splicing can be performed regardless of the line operation. The old web roll 2 can be freely carried out from the support arm 30, which is advantageous in terms of operation.

Once the old web roll 2 has been carried out from the support arm 30, the support arm 30 may be lowered in a recessed state to wait below the spool 7 of the new web roll 2.

Note that the side where web 1 is fed is outside the calendar,
It may also be a sliver or the like.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) When the winding diameter of the web roll on the web roll support base becomes smaller, the old web roll is separated from the web roll support base, a new web roll is transferred to the web roll support base, and the old web roll is transferred to the web roll support base. Since the web is spliced from the roll to the new web roll, it is possible to quickly switch from the old web roll to the new web roll without waiting for the old web roll to be taken out. Rolls can be carried out freely, which is advantageous in terms of operation.

(2) Since the web can be automatically spliced from the old web roll to the new web roll, the new web can be quickly and easily passed through a calender, etc. without the need for manpower, and continuous operation is possible.
Productivity can be improved.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a sectional view taken along line A-A in Figure 1, and Figure 3 is a cross-sectional view taken along line A-A in Figure 1.
A sectional view taken along line B and FIG. 4 are side views of a conventional unwinder device. In the figure, 1 is a web, 2 is a web roll, 10 is a web roll support stand, 11 is a web roll separation means, 12 is a web splicing means, and 13 is a new web roll transfer means.

Claims (1)

[Claims] 1 It has a web roll support stand that supports the bearings at both ends of the web roll spool in order to feed the web to a super calender, etc., and a pair of rails arranged approximately horizontally behind the support stand, and the web roll is carried in at the rear end. A trolley that pushes the bearings at both ends of the new web roll and moves it along the rails to the support base, and a column that stands vertically in front of the support base that can be raised and lowered via an elevating frame and retracted from the support base side. A support arm that supports the bearings at both ends of the old web roll whose diameter has become smaller and moves upward from the support stand, and presses the web of the old web roll on the support arm onto the new web roll to connect it to its starting end. An unwinder device equipped with a pressure roller.