JPS6367101A - Edge-section guide apparatus for band sawing machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a blade guide device for a band saw.

More specifically, the present invention relates to a device for holding a rotationally moving blade of a band saw and smoothing the movement of the blade. - (Prior Art) A guide device for the blade of a band saw that has been used in the past has the configuration shown in FIG. 12. Vertical groove 26 in the center
A pair of long grooves 3 in an inverted V-shape are bored in a support body 24 having
Support arm 29.29 with knife-like end 27 at 2,32
The support arm 29 is screwed into the support body 24 with the screw 50, and the screw 50 is loosened to make the support arm 29 movable in the direction of the arrow by the length of the oval screw hole 38.

A roller 33 is rotatably provided on a shaft 35 provided on a wall surface of the support body forming a cavity below the longitudinal groove 26 of the support body 24 . The blade of the band saw, which moves in the direction of the arrow due to the operation of the band saw, which will be described later, passes from the longitudinal groove 26 of the support 24 between the knife-shaped ends 27 of the pair of support arms 29 and the roller. 3
3 and move downward. At this time, the lateral movement of both sides of the wide surface a' of the band saw blade is restricted by the knife-shaped end 27 of the support arm 29, and the spine C' of the blade is restricted by the roller. 33, and movement in the front-back direction is restricted.

Next, with reference to the attached FIG. 11, an overview of a known band saw using a band-shaped blade section will be explained.

A work plate 8 is disposed on the negative side of the base 2 of a main body 6 of a bandsaw machine formed in an L-shape and consisting of a base 2 and an arm 4. A blade guide device is installed at the end of the guide mounting member 10 provided on the front surface of the arm 4. 112 is attached. Note that another blade guide device 12 (not shown) having exactly the same configuration is symmetrically provided inside the base 2 so as to face the blade guide device 12. The belt-shaped blades 1b are respectively wrapped around rotary wheels 14, 16.18 which are rotatably housed in the base 2 and arm 4,
．． As 18 rotates, it moves in the direction of the arrow.

The rotating wheel 14 is connected to a drive motor 20. Reference numeral 22 denotes a hole bored in the work plate 8 so that the band-shaped blade part can pass therethrough.

(Problems to be Solved by the Invention) The blade guide device of the conventional example described above has a configuration in which the band-shaped blades are regulated from three sides, but the band-shaped blades 8'
[1] Although the wide surface a' of b is restricted from contacting the knife-shaped end 27 of the support arm 29 while the blade is moving, the wide surface a' and the knife-shaped end are In order to prevent friction from occurring due to contact with the blade 27, a necessary gap must be provided between the pair of knife-like ends 27 and the wide surface a' of the blade. Therefore, the blade part had defects such as lateral vibration within the gap and vertical movement being impossible.

- Since the spine C' is in contact with the roller 33 that regulates the spine C' of the old calligraphy blade part in the right angle direction, the belt-shaped blade part is in contact with the roller 33 during movement. Swings and oscillates from side to side. As a result, the member to be cut with the belt-shaped blade may be misaligned during cutting, resulting in problems such as hindrance to cutting at a desired position.

(Means and operations for solving the problem) Therefore, in the guide holding device of the present invention, firstly, the band-shaped blade portion is attached to the spine C′.
A configuration is provided in which a long groove is provided in the roller held by the roller, the surface of the band-shaped blade part passes through the groove, and the 111 wide surface of the band-shaped blade part is regulated from the side surface by a pair of rollers.

Since the surface of the band-shaped blade portion is supported on the inside of the groove when passing through the long groove, the swinging of the band-shaped blade portion to the left and right is prevented. Second, the wide surface a' of the band-shaped blade is held by a pair of rotatable rollers, which prevents its lateral vibration and also prevents friction between the band-shaped blade and the knife-shaped end of the support arm. The problem will also be resolved. Therefore, the workpiece to be cut into a desired shape by the band-shaped blade moving by the band saw is cut at a desired and accurate position near the hole in the work plate.

(Embodiment) An embodiment of the invention will be described below with reference to the accompanying drawings. The support 24 of the blade guide device of the present invention has a longitudinal groove 26 and a screw hole 28 for mounting on the guide mounting member 10, and a pair of rollers a, a for holding the wide surface a' of the band-shaped blade. A long groove 32.32 and a screw hole 34.34 bored in the long groove Δ are provided for mounting the roller support arm 30.30 provided thereon. Roller a is usually a ball bearing roller like roller C which will be described later. A U-shaped portion 39 formed by the hanging walls 36.degree. 36.37 of the support body 24 accommodates a roller C and its base 40, into which a surface C' receives a band-shaped blade portion to be described later. roller a
A roller a is rotatably attached to the end 31 of the support arm 30. Reference numeral 38 is an oval screw hole for fixing the roller support arm 30 in the long groove 32 of the support body 24. Figure 6,
FIG. 7 shows a roller stand 40 rotatably housing a roller C which receives the spine C' of the band-shaped blade. Roller base 4
A roller C rotatably supported by a support shaft 44 is housed in the recess 42 . A vertical groove 46 having a width in which the spine C' of the band-shaped blade portion is inserted and supported is formed approximately at the center of the roller C. 48 is a through hole bored in the roller base 40. The roller base mounting screw 52 is inserted into the screw hole 41 of the hanging wall 36,
Through hole 48 in the roller base, screw hole 43 in another hanging wall 36
The roller base 40 is connected to the U-shaped portion 3 together with the roller C through the
Fixed within 9. By loosening the mounting screw 52, the roller base 40 can be moved along the through hole 48 together with the roller C in the direction of the arrow, that is, in the vertical direction, and the vertical position of the roller C can be adjusted.

FIG. 10 is an enlarged view of roller C. Roller C usually has an outer ring 51 sandwiching a pole 47 equipped with a retainer 45;
This is a ball bearing consisting of an inner ring 53.

FIG. 1 is a plan view of the assembled blade guide device.

Insert the roller support arm 30 into the long groove 32 and tighten the screw 50.
This is an assembly diagram in which the roller base 40 is attached to the main body 24 and the roller base 40 is housed in the U-shaped portion 39 by screws 52. Hole 34
, the roller support arm 30 is fixed to the support body 24 by an oval screw hole 38. Loosen the screws 50, 50, move the position of the roller support arm 30, adjust the degree of suppression of the band-shaped blade part of the roller a with the wide surface a', and also move the hanging wall 36° to 36.37°.
Loosen the screw 52 that passes through the screw hole 48 through the roller base 40 housed in the U-shaped portion 39 formed by the roller base 40, and move the roller base 40 up and down in the direction of the arrow along the screw hole 48. By doing so, the roller base 40 is made movable, and the position of the roller C can be adjusted together with the roller base 40.

Therefore, the distance between roller C and rollers a, a can be adjusted.

To summarize, the wide surface a' of the band-shaped blade part is connected to the roller a,
Further, the spine C' is inserted into the longitudinal groove 46 of the roller C and is held so as to move in a predetermined direction along the inner surface of the longitudinal groove 46. Also, set screw 50, 50
By operating , it is possible to move the position of the roller support arm 30 and adjust the positional relationship with respect to the band-shaped blade part of the roller a provided at the end 31 of the support arm 30 , and further loosen the screw 52 to open the screw hole 48 . The roller C can be adjusted in the vertical direction by moving the position of the roller base 40 along.

(Effects) In the present invention, a pair of rotatable rollers provided at the ends of the roller support arms hold the 11 wide surface of the moving band-shaped blade, and a longitudinal groove 46 is provided on the roller C to hold the blade. The spine C' of the band-shaped blade part is made to be able to pass through the groove, and the band-shaped blade part smoothly moves in a predetermined direction at a desired position to accurately cut the workpiece at the desired position. This has the effect of helping to improve the performance of band saws.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a band saw blade guide device according to the present invention. FIG. 2 is a side view of FIG. 1. Figure ff53 is a plan view with the roller base of Figure 2 removed. FIG. 4 is a plan view of the support. FIG. 5 is a side view of the support. Figure 6 is a side view of the roller base. FIG. 7(A) is a front view of the roller base. FIG. 7(B) is a plan view of FIG. 7(A). FIG. 8 is a plan view of the roller support arm. Figure 9 is a front view of Figure 8. FIG. 10(A) is an enlarged side view of roller C. Same CB)
is a cross-sectional view of the same (A). FIG. 11 is a side view of a band saw incorporating the blade guide device of the present invention. FIG. 12 is a plan view of a conventional band saw blade guide device. FIG. 13 is a side view of the band-shaped blade. a, C...Roller, a'...Wide surface of band-shaped blade part,
b... Band-shaped blade part, a'... Backbone of the band-shaped blade part, 12.
...Blade guide device, 24...Support body, 30...Roller support arm, 32...Long groove, 36.37...Descent wall, 38...Oval hole, 40...Roller base , 46...
・Vertical groove, 48...Threaded hole Applicant Ryowa Co., Ltd. Agent Patent attorney Sakae Kobayashi 10 Figure M Figure 11 Figure 12 Figure 13 Procedural amendment (voluntary) October 22, 1988 Showa 61 Patent Application No. 212406 2, Title of Invention Band Saw Blade Guide Device 3, Relationship to the Amendment Case Patent Applicant Address 2-1-6-4 Azumabashi, Sumida-ku, Tokyo, Agent Person: 160 5, date of amendment order: 6, number of inventions increased by amendment: 7, subject of amendment

Claims (1)

[Scope of Claims] 1. A pair of roller support arms equipped with rotatable rollers that hold a wide surface of a movable band-shaped blade are installed in a long groove of a support so that the position can be freely adjusted, and the band-shaped blade is A blade guide device for a bandsaw machine, comprising a roller base rotatably supporting a roller having a groove into which a spine of the blade can be inserted and passed, and a roller base rotatably housed in a hanging wall of the support so that its position can be adjusted. 2. The band saw blade guide device according to claim 1, which has a roller support arm provided with a screw hole for position adjustment. 3. The band saw blade guide device according to claim 1, which has a roller base provided with a screw hole for vertical position adjustment. 4. The band saw blade guide device according to claim 1, wherein the roller into which the spine of the band-shaped blade is fitted and supported is a ball bearing roller. 5. The band saw blade guide device according to claim 1, wherein the rotatable roller that holds the wide surface of the band-shaped blade is a ball bearing roller.