JPH0653340B2 - Automatic deburring device for steel plate edge - Google Patents

Description

The present invention relates to an automatic deburring device for steel plate end faces.

[Conventional technology]

For example, a long steel plate (1) used for a bridge or the like as shown in FIG. 12 to FIG. 14 is cut into a unit length one after another from a rolled material by a cutting grindstone. ,
Burrs occur on the cut end faces (2) and (3) of the steel plate (1).
By the way, when the above steel plate (1) is used for a bridge or the like, the outer surface is coated for rust prevention, but if the cut end faces (2) and (3) of the steel plate (1) are coated with burrs, the burrs The paint is peeled off from the area, and rusting occurs. Therefore,
Usually, burrs are cut off from the cut end faces (2) and (3) of the steel plate (1), but conventionally, this deburring work has been performed manually by a worker with a hand grinder.

[Problems to be Solved by the Invention] Conventionally, since deburring of burrs generated on the cut end faces (2) and (3) of the steel plate (1) has been manually performed by an operator with a hand grinder, a great deal of labor is required. There was a problem that the work efficiency was extremely poor.

An object of the present invention is to provide an apparatus capable of automating deburring work on a cut end surface of a steel sheet.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a carry-in means installed at the start end position of a steel plate transfer line, a carry-out means installed at the end position of the steel plate transfer line, and a carry-in means and carry-out means along the steel plate transfer line. And a chamfering means installed between the chamfering means and the chamfering means, the chamfering means being disposed in the preceding stage, and
A disc sander that is equipped with a balance weight and is swingably supported so that it makes contact with the chamfered portion of the steel plate in a swingable manner, and the polishing position of the endless polishing belt is arranged between the guide pulleys. Set it to the running part,
A belt sander provided with guide rollers on both sides of the free running portion so as to have the same contact surface as the polishing belt.

[Action]

The point of the present invention is that by chamfering, first, rough chamfering is performed with a disk sander, and then finish chamfering is performed with a belt sander. Therefore, the disk sander is installed in the front stage and the belt sander is installed in the rear stage. .

Then, the disk sander for rough chamfering uses a hard disk grindstone, and press-contacts the cut end surface of the steel plate by a contact method so as to follow the undulations and irregularities of the cut end surface of the steel plate, and further, the balance weight. The pressure contact force is adjusted by the so that rough chamfering can be automatically performed efficiently by copy grinding with a hard grindstone.

Further, the belt sander for finishing chamfering sets the polishing position to the free running part between the guide pulleys in order to elastically grind the cut end surface of the steel plate after rough chamfering, and thereby the secondary burr It prevents the occurrence.

In short, since the cut end surface of the steel sheet has undulations and irregularities generated by cutting or the like, the pressure contact force of the polishing disk with respect to the steel sheet is adjusted by the balance weight, and the chamfering is performed by copy grinding with the disk sander. After that, the abrasive belt of the belt sander is elastically ground by being brought into pressure contact with the cut end face of the steel sheet by the tension and centrifugal force of the belt at the free running portion between the guide pulleys. Therefore, the polishing belt follows the cut end surface of the steel plate and prevents the secondary generation of burrs, thereby performing the chamfering.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 9. In the drawing (4)
(4 ') is a carry-in conveyor and a carry-out conveyor installed at the start and end positions of the straight steel plate carrying line.
Each conveyor (4) (4 ') has an assembly frame (5)
A large number of loading and unloading rollers (6) and (6 ') are rotatably supported at a constant pitch along the upper surface of (5') via supporting bearings (7) and (7 '), as shown in FIG. And gears (9) and (9 ') are attached to the roller shafts (8) and (8') of the rollers (6) and (6 '), respectively, and the gears (9) and (9') are attached.
An endless chain (not shown) is attached to each other, and the rollers (6) and (6 ') are rotated in the axial direction by circulatingly moving the endless chain. (10) (10 ') are the above conveyors (4)
Positioning rollers held upright between the rollers (6) and (6 ') of (4'), and (11) and (11 ') of the conveyors (4).
(4 ') Assembling frame (5) (5') below each roller (6) (6 ') and each roller (6)
An adjusting shaft rotatably supported in parallel with (6 '). The adjusting shafts (11) and (11') are provided with adjusting gears (12) at the ends of the shafts.
(12 '), and screw parts (13) and (13') are formed on the shaft part. (14) (14 ') is the adjustment shaft (11) (1
1 ') is a block body screwed into the screw parts (13) (13'), and the positioning rollers (10) (10 ') are attached to the block bodies (14) (14'). Then, an endless chain (not shown) is attached to each of the adjustment gears (12) and (12 ') and circulated and moved, and the adjustment shafts (12) and (12') are rotated in the axial direction to block. Body (14) (1
4 ') is moved in the axial direction, and the positioning rollers (10) (1
Adjust the position of 0 ').

(15) is a conveyer conveyor installed between the carry-in conveyer (4) and the carry-out conveyer (4 '). This conveyer conveyer (15) is mounted on the assembly frame (16) as shown in FIG. A roller shaft (19) of a support roller (18) is rotatably supported on the upper surface via bearings (17) (17), and a large number of support rollers (18) are attached to the conveyors (4) (4 '). The rollers (6) and (6 ') are cantilevered on the same horizontal plane at a constant pitch, and each supporting roller (18) is rotated by a chain drive as in the case of the carry-in and carry-out conveyors (4) and (4'). To be done. (20) is a positioning roller held upright between the support rollers (18), (21) is an assembly frame (16)
Is an adjustment shaft rotatably supported in parallel with the support roller (18), and (22) is a support plate having a U-shaped cross section that is screwed into the screw shaft portion (23) of the adjustment shaft (21). The positioning roller (20) is rotatably attached to the plate (22). Then, the adjusting gear (2) fixed to the shaft end of the adjusting shaft (21).
An endless chain (not shown) is attached to 4) and the endless chain is circulated to move the positioning roller (20) axially.

(25) is a carrying-in means installed at the starting end position of the steel plate carrying line, and the carrying-in means (25) is composed of a lifter (26) and a take-out mechanism (27).

In the lifter (26), (28) is a recess formed on the conveyor installation surface (29) on the side of the carry-in conveyor (4), and (30) is an opening step (31) of the recess (28). An installed support stand, (32) is an elevator pedestal on which a large number of steel plates (1) are stacked, and (33) is a plurality of guides vertically installed on the lower surface rectangular position of the elevator pedestal (32). The guide rod (33) is slidably penetrated through the support base (30). (34) is a screw shaft vertically provided at the center of the lower surface of the lift receiving base (32), and this screw shaft (34) is loosely fitted in a through hole (not shown) formed in the support base (30). I am doing it. (35) is a drive motor installed on the support (30) and can rotate in the forward and reverse directions, (36) is a worm gear attached to the motor shaft (37) as shown in FIG. 6, and (38) is an outer circumference. Teeth on the surface (39)
The nut (38) is rotatably held at a fixed position, the tooth (39) is meshed with the worm gear (36), and the screw shaft (34) is attached to the nut (38). It is screwed so that it can move in any direction. Therefore, when the drive motor (35) is rotationally driven in a predetermined direction, the nut (38) meshing with the worm gear (36) rotates at a fixed position, and the screw shaft (34) passing through the nut (38) moves up and down. It moves to move up and down the lift receiving base (32). When the lifting pedestal (32) is raised, the upper surface position of the lifting pedestal (32) is detected by a detection sensor, and the lifting pedestal (32) is simply intermittently addressed by the plate pressure dimension of one steel plate (1). Rather than raising
The position of the upper surface of the uppermost steel plate (1) is always raised to a fixed position every time, so that there is no bearing even if the plate pressure varies. (40) is a support (3
The guide bar (40) is provided upright on the inner edge of (0) along the carry-in conveyor (4), and the guide bar (40) allows a large number of steel plates (1) stacked and mounted on the lift receiving base (32) to be installed. Be guided.

In the take-out mechanism (27) of the carry-in means (25),
(41) is a U-shaped mounting frame that is erected on the opposite side of the lifter (26) through the carry-in conveyor (4), and (42) is both side vertical frames (41a) of the mounting frame (41) are inner surfaces. A support frame horizontally attached and fixed to the support frame (43), and guide rails (44) are attached and fixed to the upper surface of the support frame (42). Reference numeral (45) is a moving frame framed in a rectangular shape. The moving frame (45) slides on the guide rails (42) and (42) in the guide grooves of the guide members (46) mounted on the symmetrical parts on both sides. Insert it freely,
The support frame (42) is supported so as to be movable back and forth. (47) is an air cylinder for moving the moving frame (45) back and forth. This air cylinder (47) is attached to the central portion of the lower surface of the horizontal frame (41b) of the mounting frame (41) via a bracket. The tip of the rod (48) is attached to the center of the front end frame (49) of the moving frame (45). Reference numeral (50) is a plurality of loading claws for loading the uppermost steel plate (1) on the lift receiving base (32) of the lifter (26) onto the loading conveyor (4) one by one. (50)
Are rotatably pivotally attached to brackets mounted on the front surface of the front end frame portion (49) of the moving frame (45) at regular intervals via a pivot shaft (51). Further, the loading claw (50) is, for example, as shown in FIG. 7, a protruding piece (5
2) is provided so as to be rotatable only in one direction by contacting the stopper (53) fixed to the moving frame (45) and to hang down by its own weight. At the time of retreating, the leading end of the loading claw (50) is locked to the outer cut end surface (2) of the uppermost steel plate (1) so that the steel plate (1) is maintained in a substantially horizontal posture, and the carry-in conveyor (4). When the movable frame (45) is moved forward, the movable frame (45) is rotated along the upper surface of the uppermost steel plate (1) on the support base (32) of the lifter (26).

(54) is a carrying-out means arranged at the end position of the steel sheet carrying line, and the carrying-out means (54) has the same structure as the carrying-in means (52), and includes a lifter (55) and an extruding mechanism (56). The same reference numeral as that of the carry-in means (25) is indicated by adding a dash to omit the description. In addition, carry-out means (52)
In FIG. 8, the carry-out claw (50 ') is rotated only in the direction opposite to the carry-in claw (50) and hangs down by its own weight as shown in FIG. ), A guide bar (40 ″) is erected on the outer edge.

(57) is a chamfering means arranged along the transfer conveyor (15) between the carry-in means (25) and the carry-out means (54),
The chamfering means (57) is provided with two pairs of rough chamfering disk sanders (58) (58 ') and finishing chamfering belt sanders (59) (59'), forming one pair. Steel plate (1) with disc sander (58) and belt sander (59)
, For example, the upper corner (2a) of the cutting end face (2) is chamfered, and the other pair of the disk sander (58 ') and the belt sander (59') forms the lower corner (2b) of the cutting end face (2). ) Is chamfered, but in both cases, the disk sanders (58) (58 ') are arranged in the front stage and the belt sander (5
9) (59 ') are arranged in parallel. For convenience of explanation, one pair of the dex sander (58) and the belt sander (59) will be described below.

FIG. 5 shows a disk sander (58). In the drawing, (60) is a body frame, and (61) is a body frame (60) mounted so that the mounting position can be adjusted in the vertical and longitudinal directions. This bracket with the bracket (6
The disk sander (58) is swingably attached to the first part (1) via a pivot (62) so as to face the free end of the supporting roller (18) of the transfer conveyor (15). The disc sander (58) is a rod-shaped body (63) with a built-in drive mechanism.
A polishing disk (64), which is rotationally driven by a drive mechanism, is rotatably attached to the lower surface of the front end of the shaft via a pivot (65), and
A screw rod (66) is attached to the rear end surface of the main body (63) in a straight line with the main body (63), and a balance weight (67) is screwed to the tip of the screw rod (66) so that the position of the balance weight can be adjusted in the axial direction. Is.
(68) is a mounting piece of a predetermined bending shape that is mounted on the mounting bracket (61) below the pivot axis (62) of the disk sander (58) in the forward oblique direction, and (69) is a screw threaded through the tip inclined portion of the mounting piece (68). The combined screw rod (70) is a stopper attached and fixed to the upper end of the screw rod (69). A part of the main body (63) of the dixander (58) is brought into contact with the stopper (70), and the disc Holding the sander (58) at a predetermined inclination angle, the polishing disk (64) is attached to the upper corner (2) of the cut end face (2) of the steel plate (1).
It is pressed against a). When the polishing disc (64) is pressed against the steel plate (1), the cut end surface (2) of the steel plate (1) is cut with a cutting grindstone and has undulations or irregularities, so the position of the balance weight (67) is adjusted. By doing so, the press contact force of the polishing disk (64) is adjusted to perform the profile grinding.

Next, FIG. 9 shows the structure of the belt sander (59).
In the drawing, (71) is a mounting frame in which a slit-shaped long hole (72) is formed in a predetermined portion, and a belt sander (59) is provided on the upper surface (71a) of the mounting frame (71) so as to be movable back and forth. . (73) is a moving bracket that constitutes the belt sander (59). This moving bracket (73) is
The horizontal frame portion (73) is provided on the base portion (73a) that slides on the upper surface (71a) of the mounting frame (71) via the rod portions (73b) (73b).
c) is integrally provided, and a vertical frame portion (73d) is projected upward from the horizontal frame portion (73c). (74) is a drive motor installed on the horizontal frame (73c) of the moving bracket (73), and (75) is a rear end projecting piece (73) of the horizontal frame (73c).
e) is a drive pulley rotatably supported by a pivot shaft (76), and the bribe pulley (75) is rotationally driven by a drive motor (74). (77) (78) are guide pulleys (81) rotatably attached to the respective projecting pieces (73f) (73g) of the front end 2 crotch portion of the horizontal frame (73c) via pivots (79) (80). ) Is a tension pulley rotatably mounted on the upper end of the vertical frame part (73d) via a pivot (82), and (83) is wrapped around each of the pulleys (75) (81) (77) (78). With a wide polishing belt, the polishing position of this polishing belt (83) is set to the inclined free running portion (84) between the guide pulleys (77) and (78). (85) is a pair of mounting pieces fixed to the front end of the base (73a) of the moving bracket (73), and (86) is a pair of guide rollers rotatably mounted on each mounting piece (85). And this guide roller (86)
The polishing belt (83) is arranged on both sides of the free running portion (84) so as to be inclined so as to have the same contact surface as the polishing belt (83). (87) is an L-shaped fixed bracket fixed to the rear end surface of the mounting frame (71), and (88) is the base (73a) of the movable bracket (73) and the fixed bracket (8).
7) A restoring spring stretched between the belt sander (59) and the pulling force of the restoring spring (88).
Is made to stand by at the backward end position. Reference numeral (89) is a mounting rod projecting from the lower surface of the base (73a) of the moving bracket (73). The mounting rod (89) extends downward through the elongated hole (72) of the mounting frame (71). It is projected. (90) is a fixed bracket fixed to the lower surface (71b) of the mounting frame (71), (91) is an air cylinder for moving the belt sander (59) forward, and this air cylinder (91) is a base end. Part is rotatably attached to the fixed bracket (90) via a pivot (92), and the tip of the rod (93) is pierced through the lower end of the mounting rod (89) so as to be movable back and forth. is there. (94)
Is a collar plate attached to the tip of the rod (93) of the air cylinder (91). A buffer-like spring (95) is interposed between the collar plate (94) and the attachment rod (89) to form a steel plate (1). The impact generated when the polishing belt (83) is pressed against the above is reduced. Then, the belt sander (59) is moved back and forth by the pressure feed of the air to the cylinder chamber of the air cylinder (91) and the opening to the atmosphere and the tensile force of the tension spring (88).
The start and the contact of the polishing belt (83) with respect to the steel plate (1) are performed while the front and rear end faces (1a) (1b) of the steel plate (1) in the moving direction and the polishing belt (83) are in contact with each other. It is possible to prevent breakage of the polishing belt (83) at the time of starting and separating. To summarize the above points, the belt sander (59) uses a detector to detect when the tip of the steel plate (1) roughened by the disc sander (58) reaches near the center of the belt sander (59). At this point, it is moved forward to prevent the side edge of the polishing belt (83) from being torn at the tip of the steel plate (1) when the tip passes, thereby improving the service life. ing. Further, when the rear end of the steel plate (1) passes through the belt sander (59), the other end of the polishing belt (38) is prevented from being torn at the rear end of the steel plate (1). The detector detects the time just before the trailing edge of the rear end of the belt has passed, and the belt sander (59) is set back.

The operation procedure of the device of the present invention will be described below. The rollers (6), (6 ') and (18) of the conveyors (4), (4') and (15) are chain driven.

Carrying-in means (25) installed at the start position of the steel plate conveying line
The lifter (26) is operated to hold the lift receiving base (32) at the lower end. In this state, a large number of steel plates (1) are stacked and placed along the guide bar (40) on the lift receiving table (32). At this time, only the uppermost steel plate (1) projects upward from the upper end surface of the guide bar (40). Next, the air cylinder (47) of the carry-in means (25) is operated to cause the rod (48) to project.
Then, the moving frame (45) advances, the carry-in claw (50) contacts the inner end surface (3) of the uppermost steel plate (1) and rotates, and
It moves along the upper surface of the steel plate (1). The above-mentioned loading claw (5
0) hangs down by its own weight when it reaches the forward end after passing over the steel plate (1). When the carry-in claw (50) hangs down, the rod (48) of the air cylinder (47) retracts and the moving frame (4
5) retreats. Due to the retreat of the moving frame (45), the carry-in claw (50) is locked to the outer cut end surface (2) of the uppermost steel plate (1), and the steel plate (1) is pressed to have a substantially horizontal posture. It is carried in and placed on the roller (6) of the carry-in conveyor (4) and positioned in the width direction by the positioning roller (10).
At the same time, the lift pedestal (32) of the lifter (26) rises at a constant pitch, and the next uppermost steel plate (1) is guided by the guide bar (4).
0) Project from above and stand by. The steel plate (1) on the rollers (6) of the carry-in conveyor (4) is transferred onto the supporting rollers (18) of the transfer conveyor (15), and
It is positioned in the width direction by the positioning roller (20). While the steel sheet (1) is moving on the conveyor (15), the upper and lower corner portions (2a) (2b) of the cut end surface (2) are chamfered by the chamfering means (57). The burr is cut off.

The deburring by the chamfering means (57) is performed as follows.

The disk sander (58) rotates the screw rod (69) in the axial direction to adjust the position of the stopper (70) so that the polishing surface (64a) of the polishing disk (64) is made of the steel plate (1). The cut end face (2) is brought into contact with the upper corner portion (2a). Then, with the movement of the steel plate (1),
The polishing surface (64a) of the rotationally driven polishing disk (64) comes into contact with the upper corner portion (2a) of the cut end surface (2), and the upper corner portion (2a) is chamfered. At this time, the cut end surface (2) of the steel plate (1) has waviness and unevenness as described above, but the pressure contact force of the polishing disk (64) against the upper corner portion (2a) is adjusted by the balance weight (67). So the upper corner (2
A) is reliably copied and ground. Thus cut end face (2)
Of the steel plate (1) whose upper corners (2a) are rough-chamfered are further transferred, and the front end face (1a) in the moving direction of the steel plate (1) is a polishing belt (83) in which the belt sander (59) is rotationally driven. When it reaches the position of, the rod (93) of the air thruster (91) for advancing the belt sander (59) retracts, and the belt sander (59) moves forward against the tensile force of the tension spring (88). The approximately middle portion of the polishing belt (83) in the width direction is in pressure contact with the upper corner portion (2a) of the steel plate (1). Then, with the movement of the steel plate (1), the upper corner portion (2a) is ground by the polishing surface of the rotationally driven polishing belt (83) to be finished. At this time, in the polishing belt (83), in the free running portion (84) between the guide pulleys (77) and (78), the upper corner portion (2a) of the steel plate (1) is generated by the tension and centrifugal force of the belt (83). The upper corner portion (2a) is elastically ground because it is pressed against. Therefore, the polishing belt (83) follows the cut end surface (2) of the steel plate (1), and the chamfering is performed while preventing the secondary generation of burrs. When the steel plate (1) is transferred while the upper corner portion (2a) is being chamfered and the rear end surface (1b) in the moving direction thereof reaches a substantially middle portion in the width direction of the polishing belt (83), the advancing air cylinder. (91) is released to the atmosphere. Then, the belt sander (59) retracts due to the tensile force of the tension spring (88), and the polishing belt (83) separates from the steel plate (1). In this way, the start and the separation of the polishing belt (83) from and to the steel plate (1) are performed while the front and rear end faces (1a) (1b) in the moving direction of the steel plate (1) and the polishing belt (83) are wrapped. The breakage of the polishing belt (83) is prevented. When the upper corner portion (2a) of the steel plate (1) is chamfered in this manner, the lower corner portion (2b) of the steel plate (1) moves to the other side of the disk sander (58). ′) And a belt sander (59 ′) for rough chamfering and finish chamfering.

The steel plate (1) chamfered by the chamfering means (57) is transferred from the support roller (18) of the transfer conveyor (15) to the roller (6 ') of the carry-out conveyor (4). And
When the steel plate (1) reaches the end position of the transfer line, the carry-out pawl (50 ') mounted on the front end face of the moving frame (45') of the carry-out means (54) is attached to the inner cut end face of the steel plate (1). It faces (3). After that, the air cylinder (47 ') is activated and the rod (48') is projected. By the projection of this rod (48 '),
The moving frame (45 ') advances, and the carry-out claw (50') abuts the inner cut end surface (3) of the steel plate (1) to press the steel plate (1) in a direction orthogonal to the moving direction, The steel plate (1) is carried out and placed in a substantially horizontal posture on the lift receiving base (32 ') located at the rising end of the lifter (55'). In this way, the lifting stand (32 ')
When the steel plate (1) is placed on top of it, the moving frame (45 ') retracts and stands by at its original position, and the lift receiving base (32') has a thickness of one steel plate (1). It moves down by a minute. Then, when a predetermined number of chamfered steel plates (1) are stacked and placed on the lift receiver (32 ') of the lifter (55'), the steel plates (1) are taken out from the lift receiver (32 '). .

In the above embodiment, the upper and lower corners of the steel plate are separately polished by the two belt sanders (59) and (59 '), but as shown in FIG. 10 or FIG. The upper and lower corners may be polished simultaneously with only the belt sanders (59 ″) or (59) of the stand. In this case, the belt sanders (59 ″) and (59) can be moved toward and away from the steel plate. It is something to keep.

〔The invention's effect〕

According to the present invention, since deburring of burrs generated on the cut end surface of the steel sheet can be automatically performed, chamfering work can be performed easily and quickly, and workability can be significantly improved. . Moreover, after chamfering by copying grinding,
Since the chamfering is performed by elastic grinding, burrs do not occur secondarily, and the burrs can be reliably cut off.

[Brief description of drawings]

1 is a schematic sectional front view of an embodiment of the apparatus of the present invention, FIG. 2 is a schematic plan view of the apparatus of the present invention, FIG. 3 is a partial sectional front view of the loading means, and FIG. 4 is a portion of the loading means. Sectional side view, FIG. 5 is a side explanatory view showing a conveyer and a disk sander, FIG. 6 is a schematic partial sectional plan view of a drive mechanism of a lifter, and FIGS. 7 and 8 are explanatory views of a loading claw and a loading claw. FIG. 9 is a side view showing a belt sander, and FIGS. 10 and 11 are explanatory views showing another embodiment of the belt sander. Fig. 12 is a plan view of a steel plate, Fig. 13 is a side view,
The drawing is a partially enlarged view of FIG. (25) …… Incoming means, (54) …… Unloading means, (57) …… Chamfering means, (58) …… Disk sander, (59) …… Belt sander, (64) …… Grinding disk, (67 ) …… Balance weight, (77) (78) …… Guide pulley (83) …… Grinding belt, (84) …… Free running part, (86) …… Guide roller.

Claims (1)

[Claims] 1. A carrying-in means installed at a starting end position of a steel plate carrying line, a carrying-out means installed at a terminal end position of a steel plate carrying line, and a carrying-in means installed along a steel plate carrying line between the carrying-in means and the carrying-out means. The chamfering means comprises a disc sander disposed in the front stage and swingably supported so that the polishing disc comes into contact with the chamfered portion of the steel plate with a balance weight. Belt sander with the endless polishing belt set at the polishing position on the free running portion between the guide pulleys, and guide rollers provided on both sides of this free running portion so as to have the same contact surface as the polishing belt. An automatic deburring device for an end surface of a steel plate, comprising: