JPH04113109U - Straightening roll holder fixing device - Google Patents

Abstract

(57) [Summary] [Purpose] To quickly and reliably fix and unfix a holder equipped with a straightening roll to a straightening machine. [Structure] Long grooves 14a, 14a facing a pair of protrusions 46, 46 protruding from the bottom surface of the cart 18 are bored in a lower rotary table 14, into which a cart 18 equipped with a straightening roll 16 is carried in and out. A plurality of locking members 50 are disposed on the lower rotary table 14 and are moved forward and backward into each long groove 14 by a hydraulic cylinder 48 . Rotating table 1 below the trolley 18
4, the carriage 18 is fixed to the lower rotary table 14 by energizing the hydraulic cylinder 48 and pressing the locking member 50 against the protrusion 46. Further, by reversely biasing the hydraulic cylinder 48, the fixation of the truck 18 to the lower rotary table 14 is released.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea was developed for use in a straightening machine that straightens straightened materials that have curls or curls. maintenance such as replacing the straightening roll in the straightening machine or polishing the roll surface. When performing nonce, a holder with a rotatable straightening roll is quickly attached to the straightening machine. The present invention relates to a fixing device that can quickly and reliably fix and release fixing.

0002

[Prior art]

For example, the material to be straightened, such as a round bar or steel pipe, has the desired dimensions, shape, and mechanical properties. A device that corrects wire curls and bends that occur when processing round bars, steel pipes, etc. A straightening machine that uses a pair of straightening rolls with a convex and concave drum-shaped surface. is preferably used. This straightening machine works vertically across the pass line of the material to be straightened. A pair of straightening rolls facing each other are rotatably arranged, and both rolls are aligned with the pass line. The rolls are positioned so that they intersect with each other at a predetermined angle in opposite directions. A space is defined between the two to allow passage of the material to be straightened. Therefore , is supplied between both straightening rolls that are rotated in opposite directions by an external drive source. The material to be straightened is pinched between both straightening rolls and sent forward, and in this process, the line of the material is Curds and curls are corrected.

0003 In this case, the surface of the straightening roll is scratched by biting the material to be straightened. Scale, etc. may adhere to the surface of the material to be straightened due to sticking or baking, which may damage the surface of the material to be straightened. This was causing the problem. In addition, the contact area of the straightening roll with the material to be straightened is localized. If this is left untreated, accurate correction may not be possible over time. There were also some problems. Therefore, the surface of the straightening roll is regularly polished or modified. By doing this, you can always maintain a proper roll surface and perform accurate straightening. There is.

0004 In this case, maintenance such as polishing or reshaping of the straightening roll is It is extremely difficult to do this in-house. In addition, for straightening machines, changing the straightening order Accordingly, it is necessary to replace the straightening roll with a special standard according to the material to be straightened. There In the above-mentioned straightening machine, a holder with a rotatable straightening roll is attached to and detached from the equipment frame. When replacing or maintaining the straightening roll, the holder can be placed freely. I try to remove it from the main unit.

[0005]

[Problem that the idea aims to solve]

The holder of the straightening roll is fixed to the frame of the straightening machine by a plurality of bolts. has been established. Therefore, when replacing or maintaining the straightening roll, be sure to It takes a lot of time and effort to remove and tighten the multiple bolts that secure the It takes a long time to replace and maintain the straightening rolls, which reduces the operating efficiency of the straightening machine itself. There is a drawback that it greatly reduces the Especially when removing the holder on the upper straightening roll. When removing and fixing bolts, the worker must hold the bolt in an unstable position facing upwards. and tightening, which is extremely complicated and time-consuming. there was.

[0006] In addition, since bolt tightening work relies on manual labor, the tightening force of the bolts must be sufficient. or the tightening force may be uneven depending on each bolt. this place In this case, the load applied to the holder through the straightening roll during straightening work It has been pointed out that there is a drawback that it is not possible to achieve highly accurate correction. .

[0007]

[Purpose of invention]

This idea was developed in view of the problems inherent in the above-mentioned straightening roll holder fixing means. , has been proposed to suitably solve this problem, and fixes and fixes the holder. The purpose is to provide a means for easily and quickly canceling the cancellation.

[0008]

[Means to solve the problem]

In order to overcome the above-mentioned problems and achieve the intended purpose, the present invention aims to improve the pass-through of the material to be straightened. A pair of holders are located above and below the inn and are removably attached to the frame. Each holder is equipped with a straightening roll rotatably supported, and the straightening roll is passed between both rolls. In the straightening machine configured to straighten the material to be straightened, is formed on the holder to prevent the load applied to the straightening roll when straightening the material to be straightened. A taper that slopes in the direction, The holder is disposed on the frame and moves forward and backward toward the holder that is positioned at a fixed position on the frame. The surface of the holder facing the taper has an inclined surface corresponding to the taper. a plurality of lock members formed with a taper to connected to each of the locking members, and when the holder is positioned on the frame. , so that the taper of the locking member can freely engage and disengage from the taper of the holder. It is characterized by comprising a driving means for moving forward and backward.

[0009]

【Example】

Next, a preferred embodiment of the straightening roll holder fixing device according to the present invention will be described. The following description will be made with reference to the accompanying drawings.

0010 (About the overall structure of the straightening machine) FIG. 4 is a longitudinal sectional side view of a straightening machine employing the fixing device according to the embodiment, On the upper surface of the bed 12 in the main machine 10, there is a lower part that rotates by a drive means (not shown). A rotary table 14 is provided, and a lower straightening roll 16 is rotated on the lower rotary table 14. A freely rotatable holder 18 is positioned and placed in a detachable manner. Note that the holder 18 of the lower straightening roll 16 is The straightening roller 16 functions as a cart for carrying the straightening roll 16 into and out of the straightening machine 10. Therefore, the holder 18 of the lower straightening roll 16 will be referred to as a "cart" hereinafter. shall be.

[0011] Supports 20 are erected at the four corners of the bed 12, and the upper ends of these four supports 20 are An upper frame 22 is provided, and between the bed 12 and the upper frame 22 An intermediate frame 24 is arranged so as to be movable up and down. And this intermediate frame 24 is configured to be moved up and down by a lowering device 26 disposed on the upper frame 22. There is. Further, the intermediate frame 24 is provided with a rotating mechanism by an appropriate driving means (not shown). An upper rotary table 28 is pivotally supported, and an upper correction roll is mounted on the lower surface of the upper rotary table 28. A holder 32 rotatably provided with a holder 30 is detachably disposed.

0012 The upper and lower straightening rolls 16, 30 are aligned with the pass line of the material to be straightened (not shown). the lower straightening rolls 1 6, the upper straightening roll 30 is placed close to or separated from the rolls 16, 30. Define the essential gap. Then, both the straightening rolls 16 and 30 are driven by an external driving means (not shown). ) in mutually opposite directions, and the rollers 16 and 30 are rotated in opposite directions. Straightening of the material is accomplished by passing the straightening material through it.

[0013] (About the lower straightening roll trolley fixing device) As shown in FIG. 4, on the upper surface of the truck 18, there are a pair of The supporting members 36, 36 are arranged upright, and the lower straightening roll 16 is placed between the supporting members 36, 36. It is rotatably supported. Further, on both sides of the trolley 18 along the longitudinal direction, there are long Wheels 38, 38 are respectively disposed at a predetermined distance in the hand direction. The lower rotation lever On the upper surface of the cable 14, as shown in FIG. 5, a pair of rails 34, 34 are arranged in parallel, and the rails 34, 34 are arranged on the corresponding sides of the trolley 18. The wheels 38, 38 are arranged so as to be freely movable.

[0014] Note that the wheels 38, 38 located on the same side of the truck 18 are as shown in FIG. The carriage 18 is positioned so as to be offset in the axial direction, and the carriage 18 is carried into the lower rotary table 14. The wheels 38 located on the downstream side in the direction run along the outer side of the center of the rail 34. , and the wheels 38 located on the upstream side in the loading direction run along the inner side of the center of the rail 34. It is set to run (see Figure 5).

[0015] At a position close to the lower rotary table 14, as shown in FIG. Carrying out/carrying rails 40, 4 that can be linearly aligned with the rails 34, 34 arranged in 4. 0 is placed. In addition, the loading/unloading rails 40, 40 are separated from the straightening machine 10. For example, a transfer means such as a cylinder (not shown) is disposed at an appropriate position between the cylinders. With the piston rod 42 of the cylinder connected to the truck 18, the cylinder can be rotated forward or reverse. By energizing, the carriage 18 can be carried out of the straightening machine 10 and transported to the straightening machine 10. entry is made. In addition to cylinders, for example, racks and pinios can be used as transport means. Mechanisms in combination with chains, mechanisms in combination with chains and sprockets, etc. The following measures can be adopted as appropriate.

[0016] A stopper 44 is disposed at the downstream end of the lower rotary table 14 in the direction in which the cart is carried in. , one end of the cart 18 carried into the straightening machine 10 is in contact with the stopper 44. (See FIG. 5). Also, the rail 3 of the table 14 4 and 34, as shown in FIG. Recesses 34a are formed at corresponding positions. Depth dimension of this recess 34a In this case, each wheel 38 running on the upper surface of the rail 34 (see Fig. 2) falls into the recess 34a. As a result, the bottom surface of the cart 18 comes into contact with the top surface of the lower rotary table 14 (see Figure 1). It is set to do so.

[0017] That is, each wheel 38 of the trolley 18 that has been carried to the fixed position of the straightening machine 10 By falling into the recess 34a, the main body of the trolley sinks by a predetermined height, and as shown in FIG. As shown, the bottom surface of the cart 18 is placed in contact with the top surface of the lower rotary table 14. child As a result, the load applied to the lower straightening roll 16 at the time of straightening the material to be straightened is It is stably supported by the lower rotary table 14 through its body.

[0018] In addition, the rail 34 on the lower rotary table 14 is located on the upstream side in the cart loading direction. As shown in FIG. 5, the recess 34a is formed only inside the center of the rail 34. ing. Therefore, when carrying the trolley 18 to the lower rotary table 14, the lower The wheels 38, 38 on the upstream side are connected to the recess 34a on the upstream side in the carrying direction in the rails 34, 34. , Don't fall into 34a. Note that the end of each recess 34a on the cart loading side is sloped. The wheels 38 are attached so that the wheels 38 can be introduced and removed simultaneously.

[0019] At a position facing the inside of both rails 34, 34 on the lower rotary table 14, there is a 1, parallel long grooves 14a, 14a are bored adjacent to each rail 34, A pair of protrusions 46, 46 protruding from the bottom surface of the truck 18 face into the corresponding long grooves 14a. It is configured to The surfaces of the protrusions 46, 46 that are separated from each other are provided with the material to be straightened. The direction of the load applied to the lower straightening roll 16 when straightening the material, that is, tilting downward. A taper 46a is formed, and the taper 46a is connected to a hydraulic cylinder 48, which will be described later. Under the cooperative action of the taper 50a of the disposed locking member 50, the carriage 18 is lowered. It functions to firmly fix it to the rotation table 14.

[0020] As shown in FIG. 1, the lower rotary table 14 includes a piston rod (not shown). A plurality of hydraulic cylinders 48 whose axes intersect with the extending direction of the long groove 14a are provided, The hydraulic cylinder 48 has its cylinder head side facing into the long groove 14a. Hydraulic system A locking member 50 as shown in FIG. 1 is disposed on the piston rod of the cylinder 48. By biasing the hydraulic cylinder 48 forward and backward, the locking member 50 is positioned. The position of the protrusion 46 on the truck 18 in pressure contact with the taper 46a (FIG. 1) and the taper 4 It is possible to reciprocate between a position away from 6a (FIG. 2).

[0021] The lower surface of the locking member 50, that is, the surface facing the taper 46a of the protrusion 46 A tapered taper 50a is formed to correspond to the taper 46a. Therefore , by biasing the hydraulic cylinder 48 in the direction in which the piston rod extends. , as shown in FIG. Due to the so-called "wedge action" of both tapers 46a and 50a, the carriage 18 is The bottom surface is strongly pressed against the upper surface of the lower rotary table 14.

[0022] A double acting type is preferably used as the hydraulic cylinder 48, and when straightening the material to be straightened, , the direction in which the taper 50a of the locking member 50 comes into contact with the taper 46a of the protrusion 46 The structure is such that it is always energized with a predetermined pressure. As a result, the lower straightening roll 16 Even if a load is applied to the roll 16, the trolley 18 supporting the roll 16 is firmly held in place. It's something you get. In addition, when the piston rod of the hydraulic cylinder 48 is moved backward, , the locking member 50 is easily separated from the taper 46a of the protrusion 46 and can be quickly unpinned. Also, depending on the specifications of the truck 18, the hydraulic cylinder 48 and It is also recommended to change the number of lock members 50 as appropriate.

[0023] (About the upper straightening roll holder fixing device) The fixing device for the upper straightening roll 30 is basically the fixing device for the lower straightening roll 16. Since the configuration is the same as that of Omitted.

[0024] As shown in FIG. 3, the upper rotary table 28 disposed on the intermediate frame 24 is The groove 28a is formed in a C-shape that opens downward on the surface, and the groove 28a is formed in a T-shape. The main body 52 of the holder 32 is slidably inserted thereinto. Also, above A stopper 54 is formed on the downstream side of the rotary table 28 in the holder insertion direction. By bringing one end of 2 into contact with the stopper 54, the holder 32 is not positioned. (See Figure 1). In addition, on the lower surface of the holder 32, a pair of Support members 56, 56 are vertically installed, and an upper straightening roll 30 is placed between both support members 56, 56. It is rotatably supported.

[0025] As shown in FIG. The direction of the load applied to the upper straightening roll 30 during straightening, that is, the direction of the upward tilt. A taper 52a is formed, and the taper 52a is arranged on the upper rotary table 28. Under the cooperative action of the taper 50a of the locking member 50 disposed on the hydraulic cylinder 48, It functions to firmly fix the holder 32 to the upper rotary table 28.

[0026] Both sides facing the taper 52a of the holder main body 52 in the upper rotary table 28 On the side surface, there is a hydraulic cylinder 48 with the cylinder head side facing into the groove 28a. A lock member 50 is provided on the piston rod of the hydraulic cylinder 48. It is. The upper surface of this locking member 50, that is, the tape formed on the holder body 52 On the surface facing the taper 52a, there is a taper 50a inclined correspondingly to the taper 52a. It is formed. Therefore, the piston rod extends from the hydraulic cylinder 48. By pressing in the direction, the taper 50a of the lock member 50 is pressed against the taper of the holder body 52. The taper 52a is in contact with the taper 52a (the state shown by the solid line in FIG. 3), and the so-called Due to the "wedge effect", the upper surface of the holder 32 is aligned with the groove in the upper rotary table 28. It is pressed against the internal ceiling surface of 28a. In addition, the hydraulic cylinder 4 When the piston rod 8 is moved backward, the locking member 50 is attached to the tip of the holder body 52. The holder 32 can be easily separated from the holder 52a, and the holder 32 can be quickly unfixed.

[0027] Here, when replacing and maintaining the upper and lower straightening rolls 16 and 30, With the cart 18 equipped with each roll 16, 30 and the holder 32 connected together, It is configured to carry out loading and unloading into and out of the straightening machine 10. i.e. before Between the supporting members 36 and 56 disposed opposite to the recording cart 18 and the holder 32, As shown in FIG. 3, the holders 32 is placed and fixed on the trolley 18. Further, a cylinder composing the transfer means is mounted on the cart 18. The stone rod 42 is connected. Then, the state in which the fixing by each of the fixing devices is released is shown. In this state, the carriage 18 is moved through the rails 34 and 40 by biasing the cylinder in the forward and reverse directions. It is carried out and brought in with the same procedure.

[0028]

[Effect of the example]

Next, the operation of the fixing device according to the embodiment will be explained. Upper and lower straightening rolls 16, When replacing or maintaining the rotary tables 14, 30, first replace or maintain both rotary tables 14, 28 to make the axes of the upper and lower straightening rolls 16 and 30 parallel. Next, the trolley Spacers 58, 58 are fixed to the upper surfaces of supporting members 36, 36 erected in 18, and Corresponding support members 56, 56 disposed on the holder 32 are placed on the upper surface of the spacers 58, 58. The intermediate frame 24 is lowered until they touch each other. Then, as shown in Figure 4, both By connecting and fixing the support members 36 and 56 via the spacer 58, the upper straightening roll A holder 32 including a holder 30 is placed and fixed on a trolley 18.

[0029] Next, each hydraulic cylinder 48 disposed on both rotary tables 14 and 28 is The piston rod is urged to retreat into the cylinder chamber. As a result, Figure 1 As shown by the two-dot chain line in FIG. 3, the locking member 50 disposed on the piston rod is spaced apart from the taper 46a of the protrusion 46 or the taper 52a of the holder main body 52, and The fixation of the wheel 18 and the holder 32 to both the rotary tables 14 and 28 is released. . In addition, a piston rod of a cylinder disposed outside the straightening machine 10 is attached to the truck 18. By connecting the cylinders 42 and urging the cylinders in a predetermined direction, the truck 18 The wheels 38 separate from the corresponding recesses 34a and move along the rails 34, 34 to the straightening machine 10. will be removed from. Further, the trolley 18 runs on unloading/loading rails 40, 40. It is then transferred to a designated work area, where the required work (roll replacement, polishing, modification, etc.) is carried out. be called.

[0030] Next, the replacement or maintenance of the upper and lower straightening rolls 16, 30 is completed. In this case, the carriage 18 is carried into the straightening machine 10 by reversely biasing the cylinder. Ru. Wheels 38, 38 disposed on the trolley 18 are disposed on the lower rotary table 14. Running on the rails 34, 34, each wheel 38 has a corresponding recess 34a provided in the rail 34. When the truck 18 arrives at contact with the upper surface of cable 14. Note that the recess 3 formed on the upstream side of the cart carrying direction 4a, as shown in FIG. Since the carriage 18 is formed only in a position outside the area where the carriage 18 is The wheels 38 do not fall into the recesses 34a during the process of transporting the wheels 38 into the recesses 34a.

[0031] Further, the holder 32 fixed to the trolley 18 via the spacer 58 is The main body 52 is fitted into the groove 28a of the upper rotary table 28. And trolley 1 8 and holder 32 on the corresponding rotary tables 14, 28, The respective positions are determined by coming into contact with 54.

[0032] In this state, the hydraulic cylinder 48 is attached in the direction in which its piston rod extends. If the piston rod is The lock member 50 extends toward the protrusion 46 or the holder body 52. and lock part The taper 50a of the material 50 is the same as the taper 46a of the protrusion 46 or the taper of the holder body 52. This results in pressure contact with the pad 52a. That is, both tapers 50a, 46a or 50a, 5 Due to the "wedge effect" that acts between 2a, the carriage 18 and holder 32 are can be firmly pressed and fixed to the corresponding rotary tables 14, 28.

[0033] Next, the spacer 58 is removed from both support members 36, 56, and the intermediate frame 2 is removed. 4, and also rotates both rotary tables 14 and 28 in a predetermined direction. By crossing the straightening rolls 16 and 30 with respect to the pass line of the material to be straightened, , the preparation for the correction work is completed.

[0034] Note that during the straightening work of the material to be straightened, the hydraulic cylinder 48 is hydraulically energized and rotated. The taper 50a of the hook member 50 is connected to the taper 46a of the protrusion 46 or the holder body 52. The taper 52a is brought into strong contact with the taper 52a. Therefore, when straightening the material to be straightened, the straightening This effectively prevents the wheels 16, 30 from moving.

[0035]

[Effect of the idea]

As explained above, according to the straightening roll holder fixing device according to the present invention, the drive The simple operation of energizing the means in the forward and reverse directions makes fixing and unfixing of the holder quick. It can be done in time. Additionally, workers may have to tighten or loosen multiple bolts. To free workers from complicated and burdensome work by eliminating the need to perform additional work. I can do it. Furthermore, by bringing the taper of the locking member into contact with the taper of the holder, the so-called " The holder is fixed using a "wedge action", so it can be strengthened with a small amount of force. It has the advantage of being able to be fixed.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of a main part of a straightening machine, showing a cart fixed to a lower rotary table by a fixing device according to an embodiment.

FIG. 2 is a longitudinal sectional front view of the main part of the straightening machine shown in a state where the fixing device of the embodiment releases the fixing of the trolley to the lower rotary table.

FIG. 3 is a longitudinal sectional front view of the main part of the straightening machine, showing a state in which the holder of the upper straightening roll is fixed to the upper rotary table by the fixing device according to the embodiment.

FIG. 4 is a longitudinal sectional side view of a straightening machine that employs a fixing device according to an embodiment.

FIG. 5 is a plan view showing the cart of the lower correction roll positioned on the lower rotary table.

[Explanation of symbols]

14 Lower rotary table 16 Lower straightening roll 18 Trolley 28 Upper rotating table 30 Upper straightening roll 32 Holder 46a taper 50 Lock member 50a taper 52a taper

Claims (1)

[Scope of utility model registration request] [Claim 1] A pair of holders (18, 32) located above and below the pass line of the material to be straightened and detachably disposed on the frame (14, 28), and each holder (18, 32). A straightening machine comprising straightening rolls (16, 30) rotatably supported on the holder (18, 32) and configured to straighten the material to be straightened that is passed between the rolls (16, 30). ), the taper (46a, 52a) is formed on the frame (14, 28) and is inclined in the direction of the load applied to the straightening roll (16, 30) when straightening the material to be straightened; It is arranged so as to be able to move forward and backward toward the holder (18, 32) fixed at a fixed position on the frame (14, 28), and on the surface of the holder (18, 32) facing the taper (46a, 52a),
a plurality of locking members (50) formed with inclined tapers (50a) corresponding to the tapers (46a, 52a); and each of the locking members
(50), and the holder (18,32) is connected to the frame (14,28)
When the holder (18, 32) is positioned
A straightening roll holder fixing device comprising a driving means (48) for moving the taper (50a) of the locking member (50) forward and backward in a manner that engages and disengages the locking member (46a, 52a). .