JP2015214393A - Frame of film winding device, and method for production thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously achieve the weight saving and highly stiffening of a frame by contriving the connection rod for integrally connecting a pair of side plates in the frame of a film winding device.SOLUTION: In the frame K of a film winding device, a pair of side plates P, Pdisposed facing each other at a prescribed interval are integrated by connection with plural stays. Each stay is configured by a combination stay CS combining: a hollow pipe-shaped stay body S which is disposed between the pair of side plates P, P, and is fixed to those side plates P, P; and a tie rod T. The tie rod is inserted into the hollow part of the stay body S, one end of the rod is screwed in a first side plate P, and the other end thereof penetrates a second side plate P. A nut 22 is screwed to the other end at the outside of the second side plate in such a state that the whole is elongated by an imparted tensile force F. Thereby, the side plates P, Pare linked.

Description

  The present invention relates to a frame of a film winding apparatus that can simultaneously realize both weight reduction and high rigidity, and a method for manufacturing the same.

  The film take-up device has a slitter that winds each film with a slit so that the film unwound from the film becomes a small width. Each of which has a structure in which a plurality of intermediate shafts for running the film and a winding shaft for winding the film are rotatably supported on a pair of side plates constituting the frame. A frame is used (Patent Document 1).

  The conventional frame of the film winding apparatus includes a pair of side plates arranged at intervals corresponding to the length of the intermediate shaft and the winding shaft, and the intermediate shaft and the winding shaft in the pair of side plates. Consists of a plurality of stays composed of square pipes for integrally connecting the pair of side plates at a plurality of positions that do not interfere with each other. The pair of side plates and the stay are integrally welded to both ends of the stay body. It was the structure by which the made connection flange board and the side plate were bolt-connected.

  In order to wind up the film at a high speed, the film winder transmits vibration generated in the winder shaft and the intermediate shaft to the frame, and the frame is required to have rigidity capable of withstanding the vibration. As a result, higher rigidity is required for the frame.

  In the conventional frame of the film take-up device, the pair of side plates and the plurality of stays have a structure in which connecting flange plates and side plates that are integrally welded to both ends of the stay main body are bolt-connected, The rigidity of the connecting portion between the pair of side plates and the plurality of stays is low, and the thickness of the pair of side plates is increased in order to increase the rigidity of the frame.

  As a result, the overall weight of the film winding device increases, and not only the material cost of each member constituting the frame increases, but also the transportation and installation costs of the winding device and the reinforcement of the building where the film winding device is installed. Increases costs.

JP-A-5-254703

  It is an object of the present invention to simultaneously achieve both weight reduction and high rigidity of a frame by devising a connecting rod that integrally connects a pair of side plates in a frame of a film winding device.

  The invention of claim 1 for solving the above-mentioned problem is that a pair of side plates opposed to each other at a predetermined interval are connected by a plurality of stays to be integrated and unwound from the film original. A plurality of intermediate shafts for winding the film, and a frame of the film winding device in which the winding shaft is supported by the pair of side plates, wherein the stay is between the pair of side plates. A hollow pipe-like stay body fixed to the pair of side plates, inserted into the stay body, one end portion is screwed to the first side plate, and the other end portion is The pair of side plates are connected to each other by passing through the second side plate and, on the outer side thereof, a nut is screwed to the other end in a state where the reduction is extended by applying tension. It is characterized in that it is a combination stay that combines the tie rods are.

  According to the first aspect of the present invention, the tie rod is inserted into the stay main body while the distance between the pair of side plates is maintained by the stay main body, and the tip of the tie rod is screwed into the first side plate. The other end of the tie rod is fixed to the other end of the tie rod in a state where the other end of the tie rod penetrates the second side plate, protrudes outside thereof, and is stretched by applying tension to the tie rod. A pair of side plates arranged opposite to each other by screwing the nuts into the projecting portions of each of the projecting parts through a plurality of combination stays in which a pre-stressed tie rod in which tensile stress is generated and a stay body are combined. Are connected together.

  As described above, the pair of side plates is in a state in which the distance between the pair of side plates is maintained by the stay main body, and the second tie rod in the tie rod is extended by applying an external tensile force to the tie rod inserted into the stay main body. By screwing the nut into the projecting part from the side plate, the pair of side plates is held in a state where the distance between the pair of side plates is maintained by the pipe stay. It is integrally connected through a plurality of combination stays that combine the stay main body. That is, the tensile force in the axial direction acts on the tie rod, so that a compressive force acts on both end surfaces of the stay body. Thereby, the rigidity of the frame is secured by enhancing the integrity of the pair of side plates and the combination stay. Therefore, even if the thickness of the pair of side plates is reduced, the necessary rigidity as the frame can be secured, so that the weight of the frame can be reduced at the same time.

  A second aspect of the invention is characterized in that, in the first aspect of the invention, the stay main body has a thick portion fixed to a pair of side plates by bolts.

  Since both end surfaces of the stay main body arranged between the pair of side plates are sandwiched by the pair of side plates by a force equal to the tension applied to the tie rod, The stay main body is fixed to the pair of side plates by fixing the stay main body to the pair of side plates only by fixing the thick portion of the stay main body with bolts.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the film winding device winds each narrow film having slits so that the film unwound from the original film becomes a small width. The slitter device is provided with a plurality of winding shafts.

  Since the slitter specified by the invention of claim 3 has a plurality of film take-up shafts and is likely to generate vibration, the effect of implementing the invention of claim 1 on the slitter frame is great. .

  A fourth aspect of the present invention is a method for manufacturing a frame of a film winding apparatus according to any one of the first to third aspects, wherein a plurality of hollow pipe-like stay bodies are disposed between the pair of side plates. The first step of fixing the both ends of each stay body to the pair of side plates, the through holes provided in the second side plate substantially concentrically with the stay bodies, and the stay bodies, respectively. A second step of inserting a tie rod, screwing one end of each tie rod into the first side plate, and screwing a nut into a protruding portion from the second side plate of each tie rod; and each tie rod In the state where each tie rod is extended by pulling the protruding part from the second side plate in the bolt tensioner, it floats from the seating surface By seating by rotating Therefore nut, it is characterized by comprising a third step of generating an axial tensile stress in the tie rod.

  According to the invention of claim 4, in the first step, a plurality of stay main bodies are arranged between the pair of side plates, and both end portions of the stay main body are fixed to the side plates, and in the second step, One end of each tie rod inserted into each stay body is connected to the first side plate by screwing, and a nut is screwed to a portion protruding from the second side plate of each tie rod. By pulling the protruding portion of the tie rod from the second side plate with a bolt tensioner and extending each tie rod, the nut lifted from the seating surface, which is the outer surface of the second side plate, is rotated. Is seated on the outer surface of the second side plate. As a result, an axial tensile stress is applied to the tie rod, so that a compressive force acts on both end surfaces of the stay body, and a compressive force acts on both end surfaces of the tie rod that generates tensile stress inside. The pair of side plates are integrated with a plurality of combination stays consisting of the combination of the stay bodies, so that the necessary rigidity of the frame is maintained even if the thickness of the pair of side plates is reduced. Can be secured. That is, it is possible to increase the rigidity of the frame while reducing the weight.

  According to the present invention, the pair of side plates is held in the state by the stay main body, and the tie rod in the tie rod is extended by applying a tensile external force to the tie rod inserted through the stay main body. By screwing the nut into the projecting part from the two side plates, the nuts are connected together via a plurality of combination stays combining the pre-stressed tie rod and the stay body, and an axial tensile stress is generated on the tie rod. In addition, since the pair of side plates are assembled together via a plurality of combination stays in a state where compressive force is applied to both end faces of the stay main body, the pair of side plates and the combination stay are integrated. This increases the rigidity and ensures the rigidity of the frame. Therefore, even if the thickness of the pair of side plates is reduced, the necessary rigidity as the frame can be secured, so that the weight of the frame can be reduced at the same time.

It is the perspective view which decomposed | disassembled some frames K of the slitter concerning this invention. It is also a plan view. It is the front view which fractured | ruptured the part similarly. It is sectional drawing of the both ends of the combination stay CS. It is an enlarged sectional view of a connecting portion between the side plate P ₂ and the base pipe V. (A), (b) is a first and a front view of the second side plate P _1, P _2, respectively. (A), (b) is the front view and side view which fractured | ruptured some stay main bodies S, respectively. 2 is a front view of a tie rod T. FIG. (A)-(c) is sectional drawing of the axial direction of the combination stay CS for demonstrating the order in which the tensile stress (sigma) is generated in the tie rod T. FIG.

Hereinafter, the present invention will be described in more detail with reference to an example in which the present invention is applied to a frame K of a slitter. 1 to 4, the frame K includes a pair of left and right side plates P ₁ , P ₂ and a pair of side plates P ₁ , P ₂ so as to be integrated while maintaining a distance between the pair of side plates P ₁ , P _2. It is composed of a plurality of (5 in the embodiment) combination stays CS that are arranged at positions that do not interfere with or approach the winding shaft and intermediate shaft described later between P ₁ and P ₂ . The pair of side plates P ₁ , P ₂ constituting the frame K includes a plurality of pieces (in the embodiment, for winding a small width film by slitting the film unwound from the original film into a predetermined width. It is a plate material for supporting two winding shafts, and an intermediate shaft (both not shown) for winding a film traveling between the winding shaft and the film original. The first side plate P ₁ is provided with notch portions 1 and 2 for enabling removal of a wound product (not shown) wound around the winding shaft, The two side plates P ₂ are provided with a pair of mounting holes 3 for mounting a bearing part that supports one end of the winding shaft. In order to reduce the weight of the frame K, the plate thickness t ₁ of the first side plate P ₁ is smaller than the plate thickness t _{2 of} the second side plate P ₂ to which a motor (not shown) is attached on the inner surface. It has become. In FIGS. 1 and 6, 8 and 9 respectively indicate holes provided in the motor mounting portion of the second side plate P ₂ , and 4 indicates the first and second holes for mounting the bearing parts. 3 shows a pair of mounting holes provided up and down at the ends of the side plates P ₁ and P ₂ on the side of the original frame, and in FIG. 3, G indicates an installation surface of the frame K (slitter).

The above-described combination stay CS is inserted into a hollow cylindrical stay body S having a length corresponding to the arrangement interval L ₁ between the pair of side plates P ₁ and P ₂ and a hollow portion inside the stay body S. The tie rod T for connecting the pair of side plates P ₁ and P ₂ with bolts in a state in which a tensile stress is generated therein, and the feature of the present invention exists in this portion. In the embodiment, the vertical and horizontal dimensions of the square side plates P ₁ and P ₂ are (1,000 × 1,475 mm), and the arrangement interval L ₁ between the pair of side plates P ₁ and P ₂ is (1). , 600 mm), the outer diameter and the thickness of the hollow cylindrical stay body S are (101.6 mm) and (15 mm), respectively, and the outer diameter of the tie rod T is (19 mm). The plate thicknesses t ₁ and t ₂ of the first and second side plates P ₁ and P ₂ are (25 mm) and (40 mm), respectively. The side plates P ₁ and P ₂ and the tie rod T are made of S45C (carbon steel for machine structure), and the stay main body S is made of STKM (carbon steel pipe for machine structure).

As shown in FIG. 7, a pair of female screw holes 11 are formed at target positions with respect to the axial center on both end faces of the hollow cylindrical stay main body S. As shown in FIGS. 4 and 8, A first male screw portion 12 that is screwed to the first side plate P ₁ is formed at one end portion of the tie rod T, and a through hole formed in the second side plate P ₂ is formed at the other end portion. 5 is inserted, the second male screw portion 13 screwed with the nut 22 in the second outer side plate P ₂ is formed. Since the second male screw portion 13 of the tie rod T protrudes outside the second side plate P _{2 by} a predetermined length, the second male screw portion 13 is formed longer than the first male screw portion 12. 12 from the first inner side plate P _1, in order to be screwed into the female screw hole 6 formed through the said first side plate P _1, the distal end portion of the first male screw portion 12 The screw guide portion 12a is formed to have a slightly smaller diameter than the other portions. The length of the tie rod T (L _2), the length of the stay body S (L ₁₎ and the first side plate P ₁ plate (thickness t ₁₎ and the second thickness of the side plate P ₂ (t ₂₎ Therefore, when the pair of side plates P ₁ and P ₂ are integrated by a plurality of combination stays CS, the second male screw portion 3 of the tie rod T is connected to the second side plate P. _It protrudes by a predetermined length with respect to the outer surface of ₂ .

In order to allow the stay main body S and the tie rod T to be attached to the pair of side plates P ₁ and P ₂ , as shown in FIG. 6, each attachment portion of the combination stay CS of the first side plate P ₁ has The pair of through-holes 7a through which the bolts 21a screwed into the pair of female screw holes 11 of the stay body S are passed through the symmetrical positions with respect to the female screw hole 6 into which the first male screw portion 12 of the tie rod T is screwed. Is formed. In addition, each mounting portion of the combination stay CS of the second side plate P ₂ is a bolt that is screwed into the pair of female screw holes 11 of the stay main body S at a symmetrical position with respect to the through hole 5 through which the tie rod T passes. A pair of through holes 7b are formed through 21b.

Then, in the assembled together a pair of side plates P _1, P ₂ using a plurality of combinations stays CS, carried out in the following order. First, in a state where the pair of side plates P ₁ and P ₂ are arranged with an interval larger than the arrangement interval L ₁ , the stay main body S is arranged in a plurality of stay arrangement portions, and the second side plate P ₂ is penetrated. and a tie rod T which is inserted from the hole 5 are inserted into the interior of the stay body S, screwing the first male screw portion 12 of the distal end portion of the tie rod T into the first female screw hole 6 of the side plate P _1. In this state, the bolts 21a and 21b are inserted into the through holes 7a and 7b provided in the side plates P ₁ and P ₂ and are screwed into the female screw holes 11 provided on both end surfaces of the stay main body S. The stay main bodies S are fixed to the first and second side plates P ₁ and P ₂ via a pair of bolts 21a and 21b at both ends thereof. In this state, the second male screw portion 13 of the tie rod T protrudes outside by a predetermined length from the through hole 5 of the second side plate P ₂ , and the nut 22 is screwed into the protruding portion of the second male screw portion 13. [Fig. 9 (a)].

In the above state, when a “bolt tensioner (not shown)” is set on the protruding portion of the second male screw portion 13 of the tie rod T and a tensile force F _{1 is applied} to the tie rod T, a pair of side plates P ₁ and P ₂ are in a state where the space (L ₁ ) is held by the hollow cylindrical stay body S, and the tie rod T is in the state shown in FIG. 9A where the tensile force F ₁ is not applied. by stretched only for (J), the nut 22 is spaced lifted from the second outer surface of the side plate P ₂ is a seating surface [Fig. 9 (b)]. The “bolt tensioner” is used to extend the bolt by applying a tensile force in the axial direction to the bolt with hydraulic pressure in a state where the nut is set in the protruding portion of the bolt screwed. This is an existing hydraulic device.

When the tension force F ₁ is applied and the nut 22 is separated from the outer surface of the second side plate P ₂ , the nut 22 is rotated and seated on the outer surface of the second side plate P _2. A tensile stress σ is generated due to the occurrence of tensile strain inside the tie rod T, and the tensile stress σ is multiplied by the transverse area of the tie rod T as a reaction force on both end surfaces of the stay body S. The compression force F ₂ having the magnitude acts to maintain this state [FIG. 9 (c)]. The stay body S is not distorted even when the compression force F ₂ is applied. As a result, the pair of side plates P ₁ and P ₂ includes a plurality of tie rods T in which a tensile stress σ is generated and a stay main body S in which a compressive force F ₂ acts on both end faces. Since they are integrally connected via the combination stay CS, the integrity, that is, the rigidity of the frame K in which the pair of side plates P ₁ and P ₂ are integrated via the plurality of combination stays CS is improved. Therefore, even if the plate thicknesses t ₁ and t ₂ of the pair of side plates P ₁ and P ₂ constituting the frame K are made small (thin), the necessary rigidity as the frame K can be secured. Can be reduced in weight.

In this way, the nut 22 screwed into the second male screw portion 13 of the tie rod has a large force obtained by multiplying the tensile stress σ acting on the inside of the tie rod T and the cross-sectional area of the tie rod T, because it is pressed against the outer surface of the side plate P _2, even for vibrations winding shaft or the like of the slitter is rotated at a high speed, it will not be loosened.

A base pipe V used for fixing the frame K to the installation part of the building is provided via a plurality of bolts 23 at the lower ends inside the first and second side plates P ₁ and P _2. It is fixed. The bolt 23 uses a bulky collar 32 in order to bring its head 23 a close to the bolt insertion hole 31 of the base pipe V.

In the above embodiment, the stay main body S is for a pair of side plates P _1, P _2, bolts 21a, are fixed by 21b, it is also possible via welding.

  Moreover, although the said Example demonstrated the example which implemented this invention with respect to the frame of the slitter which has several winding shafts, this invention is implemented with respect to the frame of the rewinder which has one winding shaft. Of course it is also possible to do.

CS: Combination stay
F ₁ : Tensile force applied to the tie rod
F ₂ : Compression force acting on the stay body
K: Frame
P ₁ : First side plate
P ₂ : Second side plate
S: Stay body
T: Tie rod
σ: Tensile stress generated in the tie rod
11: Female screw hole formed in the end surface of the stay body
12: First male screw part of the tie rod
13: Second male screw part of tie rod
14: Through hole formed in the second side plate

Claims (4)

A plurality of intermediate shafts for winding up the film unwound from the original film, which are integrated by connecting a pair of side plates opposed to each other at a predetermined interval by a plurality of stays, and A film take-up device frame configured so that a take-up shaft is supported by the pair of side plates,
The stay
A hollow pipe-like stay main body disposed between the pair of side plates and fixed to the pair of side plates;
The one end is screwed into the first side plate through the inside of the stay main body, and the other end passes through the second side plate, and on the outside thereof, the decrease is extended by the application of tension. In this state, a tie rod connecting the pair of side plates by screwing a nut to the other end,
A film take-up device frame characterized by comprising a combination stay combining the above.   The frame of the film winding apparatus according to claim 1, wherein the stay main body has a thick portion fixed to a pair of side plates by bolts.   The film winding device is a slitter device including a plurality of winding shafts for winding each narrow film having slits so that the film unwound from the original film becomes a small width. The frame of the film winding apparatus according to claim 1 or 2. A method for manufacturing a frame of a film winding apparatus according to any one of claims 1 to 3,
A first step of disposing a plurality of hollow pipe-like stay bodies between the pair of side plates, and fixing both ends of each stay body to the pair of side plates;
A through hole provided in the second side plate substantially concentrically with each stay main body, and a tie rod inserted through each stay main body, and one end of each tie rod screwed into the first side plate, and A second step of screwing a nut into a protruding portion from the second side plate in each tie rod;
By pulling the projecting portion of each tie rod from the second side plate with a bolt tensioner and extending each tie rod, the nut lifted from the seating surface is rotated and seated, whereby the tie rod is axially moved. A third step for generating a tensile stress;
A method for manufacturing a frame of a film winding apparatus, comprising:

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