JPH055787U - Jig for saw blade replacement - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work of replacing the saw blade. [Structure] Holding arms 2 are swingably attached to both sides of a pair of frame bodies 11, and holding plates 23 are attached below the holding arms 2 via hinge portions. A support portion 321 having a U-shaped cross section is formed at the lower end of the holding plate 23, and a clamp member 3 that is slidable to the support portion 231 side above the support portion 231 and facing the support portion 231. Is provided. Then, the saw blade T is placed on the support portion 231 of the holding arm 2, the clamp member 3 is slid toward the support portion 231, and the saw blade T is held by the support portion 231 and the clamp member 3 to the saw machine. Transport,
Since the saw blade is replaced, the saw blade can be replaced easily and the workability can be significantly reduced.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a saw blade replacement jig used when performing a saw blade replacement operation.

[0002]

[Prior Art]

 Generally, for example, when a die casting die is manufactured, a die cutting machine is used to cut the die. In this case, it is necessary to periodically replace the saw blade of the large band saw, which has been conventionally done manually by two workers. That is, as shown in FIG. 9, first, two workers lift the saw blade T by hand and carry it to the vicinity of the sawing machine, and then, as shown in FIG. , The other handed the saw blade T over the upper side of the saw blade B to the person above, and then, as shown in FIG. 11, attach the saw blade installed in the cover B1 of the saw blade B. It was hung around a pair of rollers for each. Then, the distance between the pair of rollers of the saw blade B is narrowed, the saw blade T is set between the rollers, and then the roller is moved to its original position to complete the attachment of the saw blade T. The removal of the saw blade T was carried out by the reverse of the above work.

[0003]

[Problems to be solved by the device]

 However, since such a replacement work of the saw blade T, in particular, a transfer work of the saw blade T to the saw board B is a manual work, the workability thereof is extremely poor. Then, this invention aims at facilitating the replacement work of the saw blade by carrying out the replacement work while carrying the saw blade while being held by the jig.

[0004]

[Means for Solving the Problems]

 Therefore, in this invention, a plurality of holding arms are suspended from a frame with a predetermined interval, a holding portion is provided below the holding arms, and a supporting portion for supporting the saw blade is provided at the lower end of the holding portion. A clamp member is provided so as to face the support portion and slidable toward the support portion side, and the saw blade is clamped and held by the clamp member and the support portion.

[0005]

[Action]

 According to the above-mentioned means, the saw blades are placed on the support portions of the plurality of holding arms, the clamp members are slid toward the support portions, and the saw blades are held by the support portions and the clamp members.

After that, the replacement jig is lifted to convey the saw blade onto the saw board, the replacement jig is lowered to a predetermined position, and the clamp member is slid upward to release the holding state of the saw blade. After that, the saw blade is taken out from the holding arm and attached to a predetermined position on the saw machine. After attaching the saw blade, lift the replacement jig again and convey the replacement jig to the outside of the saw. As described above, since the saw blade replacement work is performed by the jig, the workability is greatly improved.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 7 show an embodiment of the present invention. FIG. 1 is a perspective view of a replacement jig, FIG. 2 is an enlarged view of a portion of FIG. 1, and FIG. 3 is an enlarged view of a portion b of FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, FIG. 5 is a state diagram of the exchange work by the exchange jig, FIG. 6 is a partial perspective view of the exchange jig when it is used for another saw, and FIG. VII-VII sectional view, and FIG. 8 is a front view of a saw machine in which a saw blade is inclined.

As shown in FIG. 1, the exchange jig A is provided with a frame 1, and the frame 1 has holes 111 for suspending the frame 1 at a substantially central portion and a portion displaced from the central portion. , 112 are formed, and two connecting frames 12 that connect the frame main bodies 11 to each other. Further, the upper ends of the holding arms 2 extending downward with respect to the frame bodies 11 are attached to both sides of each frame body 11, and in this embodiment, four holding arms 2 are provided. As shown in detail in FIG. 2, the connection between the holding arm 2 and the frame body 11 is pivotally supported by a shaft 13 so that the holding arm 2 can swing with respect to the frame body 11. Further, an arc-shaped long groove 14 is formed in the frame body 11, a pin 21 is erected on the holding arm 2 corresponding to the long groove 14, and the pin 21 is movably engaged along the long groove 14. The holding arm 2 can swing within a predetermined range. In addition, a threaded portion is formed at the tip of the pin 21, and the operation knob 22 is screwed into this threaded portion. By tightening the operation knob 22, the frame body 11 and the holding arm 2 are attached at a predetermined attachment angle. It is fixed.

A holding plate 23 that holds the saw blade T is hinged to the lower end of the holding arm 2. As shown in FIGS. 3 and 4, the holding plate 23 has a support portion 231 having a U-shaped cross section for supporting the lower end portion of the saw blade T 1 at its lower end, and above the support portion 231. A clamp member 3 is provided so as to be opposed to the clamp member 3 and holds the upper end of the saw blade T. The slide surface 232 on the holding plate 23 of the clamp member 3 is raised more than the vertical wall surface 233 of the support portion 231 by the thickness of the saw blade T. Further, the clamp member 3 is formed with three guide grooves 31 in the sliding direction, and pins 234 that engage with the guide grooves 31 are respectively provided upright on the holding plate 23. Further, a screw portion is formed at the tip of the pin 234 that engages with the central guide groove 31 among the three guide grooves 31, and the nut 32 is screwed into the screw portion. The clamp member 3 is prevented from coming off the holding plate 23 while allowing the slide. Further, a spring member 34 is provided between the upper end wall 33 of the clamp member 3 and the upper wall 235 above the holding plate 23, and constantly urges the clamp member downward (toward the support portion 231). ing.

When exchanging the saw blade T with the exchanging jig A having such a configuration, first, in a state in which the saw blade T is not set, the hole 111 in the substantially central portion of the frame body 11 is not shown. The wire rope 4 extending from the hoist crane is engaged, and as shown in FIG. 5, the replacement jig A is conveyed to a position above the saw board B and lowered by the hoist crane to support the supporting portions of the plurality of holding plates 23. 231 is positioned in the vicinity of the saw blade T mounted in the cover B1 of the saw board B. Then, the saw blade T attached to the saw board B is detached, the saw blade T is placed on the support portion 231 of the four holding plates 23, and the clamp member 3 is further supported by the biasing force of the spring member 34. Slide it to the 231 side. As a result, the supporting portion 231 supports the lower end portion of the saw blade T, and the clamp member 3 supports the upper end portion of the saw blade T together with the standing wall surface 233 of the holding plate 23 from both sides thereof. It is held by the support portion 231 and the clamp member 3. After that, the exchange jig A is lifted, the saw blade T is conveyed to the outside of the saw board B and lowered to a predetermined position, and the clamp member 3 is slid upward to release the holding state of the saw blade T, Remove the saw blade T. Next, a new saw blade T is placed on the support portions 231 of the plurality of holding plates 23, and the clamp member 3 is slid toward the support portion 231 by the urging force of the spring member 34 to remove the saw blade T. The saw blade T is held by the support portion 231 and the clamp member 3 in the same manner as the saw blade T is held in FIG. (Refer to FIG. 1) After that, the replacement jig A is hoisted and conveyed onto the saw board B, the replacement jig A is lowered to a predetermined position, and the clamp member 3 is slid upward to move the saw blade T. Release the hold status. Then, the saw blade T is taken out from the holding plate 23 and attached to the saw board B. After the saw blade T is attached, the replacement jig A is again lifted by the hoist crane and conveyed to the outside of the saw board B. As described above, since the replacement work of the saw blade is performed by the replacement jig A, the workability thereof can be significantly improved. In addition, since the replacement work can be performed by one person, the man-hours can be significantly reduced.

Next, as shown in FIG. 8, replacement work in the case of a saw blade C in which a saw blade is attached at an angle of 45 degrees with respect to a horizontal plane will be described. First, of the hoisting holes formed in the frame body 11, the wire rope 4 of the hoist crane is engaged with the hole 112 displaced from the central portion, and the hoist crane hoists the replacement jig A. Causes a difference in weight on the left and right sides of the displaced hole 112, and as shown in FIG. 6, the frame body 11 inclines with the left side thereof positioned upward. In this case, since the holding arm 2 can swing freely by the shaft 13, the holding arm 2 swings vertically due to its own weight. Then, in that state, the operation knob 22 is tightened and fixed. Further, since the holding plate 23 can swing on the holding arm 2 by the hinge, as shown in FIG. 7, in the holding state of the saw blade T, it is applied to the holding arm 2 by the action of maintaining the sectional shape of the saw blade T 1. On the other hand, it will be inclined by 45 degrees. Then, the exchange jig A in such a state is conveyed onto the saw blade C, the cover C1 of the saw blade C is opened and lowered to the attachment position C2 of the saw blade T, and the saw blade T is moved to the saw blade C. Can be attached to. As described above, even in the case of the saw blade C in which the saw blade T is inclined 45 degrees with respect to the horizontal plane, by changing the position of the lifting hole 112 formed in the frame body 11, the holding arm 2 Also, since the holding plate 23 can swing to hold the saw blade T, the replacement work can be easily performed, various saw machines can be supported, and the versatility is excellent. In the above embodiments, the case where the frame body and the connecting frame are fixed to each other has been described as an example, but the present invention is not limited to this, and the frame body and the connecting frame can be assembled by screws or the like. However, in this case, the storage space for the replacement jig is small when the replacement jig is not used.

[0012]

[Effect of the device]

 According to this invention, as described above, the saw blade is held and held by the supporting portion of the holding arm and the clamp member, and is transferred to the saw blade mounting position of the saw blade for replacement. Can be performed easily and workability can be greatly improved. Also, since the replacement work can be performed by one person, the man-hours can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of an exchange jig showing an embodiment of the present invention.

FIG. 2 is an enlarged view of part a of FIG. 1 showing an embodiment of the present invention.

FIG. 3 is an enlarged view of part b of FIG. 1 showing an embodiment of the present invention.

4 is a sectional view taken along line IV-IV of FIG. 3 showing an embodiment of the present invention.

FIG. 5 is a diagram showing the state of replacement work of the saw blade according to the embodiment of the present invention.

FIG. 6 is a partial perspective view of a replacement jig when it is used in another saw machine according to an embodiment of the present invention.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 6 showing an embodiment of the present invention.

FIG. 8 is a front view of a saw machine with an inclined saw blade according to an embodiment of the present invention.

FIG. 9 is a state diagram of a saw blade replacement operation showing a conventional technique.

FIG. 10 is a state diagram of a saw blade replacement operation showing a conventional technique.

FIG. 11 is a diagram showing a state in which a saw blade is replaced according to a conventional technique.

[Explanation of symbols]

 11 ... Frame body 2 ... Holding arm 23 ... Holding plate 231 ... Support part 3 ... Clamp member

Front Page Continuation (72) Inventor Takao Ota 1 Toyota Town, Toyota City, Aichi Prefecture, Toyota Motor Co., Ltd. (72) Inventor Norihisa Nishina 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd.

Claims (1)

[Claims for utility model registration] Claims: 1. A plurality of holding arms are suspended from a frame at predetermined intervals, a holding portion is provided below the holding arms, and a lower end of the holding portion is provided. A supporting portion for supporting the saw blade is provided, and a slidable clamp member is disposed on the supporting portion side so as to face the supporting portion, and the saw blade is sandwiched and held by the clamp member and the supporting portion. A jig for saw blade replacement that is characterized.