JPH0696215B2 - Cutting machine equipped with length measuring means - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention cuts a long rod-shaped workpiece such as a steel pipe to a predetermined size, and chamfers an edge of the cut constant-sized workpiece. Etc. The present invention relates to a cutting processing device provided with a length measuring means, which can perform necessary processing and finally check the length of a processed workpiece by the length measuring means and send it out.

(Prior Art and Problems Thereof) Conventionally, as described above, an apparatus capable of continuously performing constant-dimension cutting and processing of a long workpiece and length measurement has not been considered.
Of course, since there are independent cutting devices, processing devices, and length measuring devices, for example, if these devices are arranged side by side and a transporting means for transporting a workpiece between the devices is provided, the intended purpose is Although it can be achieved, if the length measuring action position and the feed action position after length measurement are separately provided, not only the entire apparatus becomes large, but also the transport time from the length action position to the feed action position is increased. Since it becomes necessary, the cycle time until the completion of the series of actions becomes long, and the efficiency is reduced.

(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention provides a cutting means for cutting a long workpiece fed in the axial direction into a fixed size, and a cut constant size. In the cutting processing apparatus, the cutting means includes a processing means for processing the workpiece, a sending means for sending the processed workpiece, and a carrying means for holding and carrying the workpiece between the respective means. A length measuring means for measuring the length of the processed workpiece which is gripped at a position corresponding to
It is provided so as to be movable between a length measuring operation position and a retracted position, and the sending means is configured to be displaceable to a retracted position that does not interfere with the length measuring means in the length measuring working position, and is also sent to the length measuring means. The present invention proposes a cutting processing device provided with a length measuring means, which is provided with an interlocking mechanism that interlocks the means with the length measuring means so as to be displaced to the retracted position when the length measuring means moves to the length measuring operating position. .

(Operation of the Invention) A long work piece fed in the axial direction is cut to a predetermined size by the cutting means, and the cut size work piece is supplied to the position of the processing means by the conveying means. The predetermined processing is performed, and the processed workpiece is conveyed to the position of the sending means by the conveying means.Before sending the processed workpiece by this sending means, the length measuring means is When the retracting position is moved to the length measuring action position, it is possible to prevent the sending unit from being automatically displaced to the retracted position by the interlocking mechanism, so that the sending unit and the length measuring unit interfere with each other.

However, the length of the processed workpiece can be checked by the length measuring means that has moved to the length measuring working position without interfering with the sending means. Thereafter, when the length measuring means is moved back from the length measuring operation position to the retracted position, the interlocking mechanism causes the delivery means to return from the retracted position to the original position, that is, the delivery operating position. hand,
The processed workpiece after the length measurement can be sent out from the conveying means.

(Example) Hereinafter, one example of the present invention will be described with reference to the accompanying drawings.

In FIGS. 1 and 2, (1) is a rotating body rotatably supported around a horizontal axis, and (2) is a steel pipe fed horizontally in the axial direction (long workpiece). A stopper for receiving the tip of (3), (4) cutting means for cutting the steel pipe (3), (5a) and (5b) chamfering means as a processing means, (6) a processed steel pipe delivering means, (7) ) Is a processed steel pipe delivery chute, and (8) is a stopper for end cutting. The drive means (9), the cutting means (4), and one chamfering means (5a) of the rotating body (1) are fixed bases (10) arranged on one side of the rotating body (1). The processed steel pipe delivery chute (7) and the end cutting stopper (8) are installed on a fixed base (11) arranged on the other side of the rotating body (1). The stopper (2) and the other chamfering means (5b) are installed on a movable base (12) provided on the fixed base (10).

The rotating body (1) is rotatable about a horizontal axis parallel to the axis of the steel pipe (3) fed,
As shown in the figure, three gripping means (13a) to (13c) are provided on the peripheral portion at equal intervals. However, the gripping means (13a) to (13c) have three action positions set around the rotating body (1) at regular intervals, that is, the cutting action positions A corresponding to the cutting means (4), Chamfering means (5
a) A machining action position B corresponding to (5b), and a delivery action position C corresponding to the delivery means (6) and located directly above the rotating body (1), every 120 degrees of the rotating body (1). It is possible to respond sequentially with intermittent rotation.

The movable table (12), as shown in FIGS. 3 and 4,
A guide rail (14) installed on a fixed base (11) supports the fixed base (11) so that the guide rail (14) can move in a direction parallel to the rotation axis of the rotating body (1). A female screw body (17) screwed to a screw shaft (16) rotatably supported by the upper bearing member (15) is fixedly mounted on the movable base (12),
The movable table (12) can be moved back and forth by rotating the screw shaft (16) with the handle (18) attached to the end thereof. (19) is the movable base (1
It is a clamp for fixing 2) to the fixed base (11) via a clamp rail (20) laid on the fixed base (11).

The drive means (9) of the rotating body (1) is, as shown in FIG. 5, a drive shaft (22) perpendicular to the rotating shaft (21) having the rotating body (1) concentrically attached to the outer end thereof. The rotating shaft (21) is for intermittently driving the rotating body (1) in one direction by 120 degrees via the casing (23) mounted on the fixed base (10). ) Is rotatably and axially movably supported, and a push-pull shaft (15) that is push-pull driven by a cylinder unit (24) attached to the casing (23) is provided at the inner end. Bevel gears (26), which are connected concentrically so that only relative rotation is possible.
Is attached. Also, on the peripheral surface of the rotating shaft (21),
Stopper pin (2) attached to the casing (23)
A peripheral groove (28) is formed into which the tip (27a) of 7) is loosely fitted, and three concave portions (28a) into which the tip (27a) of the stopper pin (27) is fitted are formed in the peripheral groove (27). Are continuously arranged at equal intervals in the circumferential direction. Further, the outer end of the rotary shaft (21) has a crown gear-shaped movable tooth that can be fitted in and disengaged from the crown gear-shaped fixed tooth ring (29) fixed to the casing (23) side in the axial direction. A ring (30) is attached. The bevel gear (26) and the bevel gear (31) that can be engaged and disengaged are attached to the upper end of the vertical drive shaft (22), and the lower end of the drive shaft (22) is attached by a cylinder unit (not shown). A pinion gear (33) that engages with a rack gear (32) driven by pushing and pulling is attached.

Therefore, as shown in FIG. 5, the cylinder unit (24)
When the push-pull shaft (25) is pulled in by the and the rotary shaft (21) is retracted to the backward limit, the movable gear wheel (30) on the rotary shaft (21) side and the fixed tooth wheel (29) on the casing (23) side are ) And are fitted to each other, and the bevel gear (2
6) is disengaged from the bevel gear (31) on the drive shaft (22) side. Also, the tip (27a) of the stopper pin (27) has a groove (2
It is fitted in one recess (28a) in 8). That is, the rotating shaft (21) (rotating body (1)) is locked so that it cannot rotate, but from this state, the cylinder unit (24)
When the push-pull shaft (25) is pushed out by the and the rotary shaft (21) is advanced to the forward limit, the rotary shaft (2
The movable toothed wheel (30) on the 1) side is disengaged from the fixed toothed wheel (29) on the casing (23) side, and the bevel gear (26) on the rotating shaft (21) side is the bevel gear on the drive shaft (22) side. It meshes with the gear (31). Further, the tip end (27a) of the stopper pin (27) is disengaged from the recess (28a) of the circumferential groove (28), and the rotary shaft (21) becomes rotatable.

Therefore, when the drive shaft (22) is rotated via the rack gear (32) and the pinion gear (33) shown in FIG. 5, the rotation is transferred to the rotary shaft (21) via the bevel gears (31) (26). This is transmitted, and the rotating body (1) is rotated. At this time, the stroke of the rack gear (32) is controlled so that the rotary shaft (21) (rotary body (1)) rotates by 120 degrees, and after the drive is stopped, the cylinder unit (24) rotates the cylinder as described above. By moving the shaft (21) backward to the backward limit, the rotary shaft (21) (rotating body (1)) can be locked again as shown in FIG. The rack gear (32) is returned to the state where the bevel gears (26) and (31) are disengaged by locking the rotary shaft (21) as described above.

As shown in FIGS. 7 to 10, the gripping means (13a) to (13c) attached to the periphery of the rotating body (1) are
A fixed arm (34) fixed to the rotating body (1), a movable arm (36) capable of swinging in a perspective direction around the support shaft (35) with respect to the fixed arm (34), and the movable arm (36). (Disc spring) (38) for urging) in the closing direction via a push pin (37), and grip release means for opening the movable arm (36) against the urging force of the spring (38). It consists of (39).

The grip releasing means (39) penetrates the rotating body (1) and is movable within a certain range, and the cam shaft (40).
A cam driven roller (41a) held by the rotating body (1) between the movable arm (36) and the operated portion (36a) of the movable arm (36) and abutting on the cam surface (40a) of the cam shaft (40). A push pin (41) provided at the inner end, a support roller (42) axially supported by the rotating body (1) so as to receive the cam shaft (40) on the side opposite to the push pin (41), and the cam. The support shaft (41bsg) of the cam driven roller (41a) and the support so as to urge the push pin (41) in a direction in which the driven roller (41a) contacts the cam surface (40a) of the cam shaft (40). A pair of springs (43) interposed between the support shaft (42a) of the roller (42) and a pair of guides connected to both ends of a member (44) attached to one end of the cam shaft (40). The pin (45) and the cam shaft (40) are held between the members (44) and the rotating body (1) so as to hold the cam shaft (40) in the retracted limit. A pair of springs (46) loosely fitted to the pin (45), an operated member (47) also serving as a stopper attached to the other end of the cam shaft (40), and a rotary body drive as shown in FIG. It is composed of two camshaft operating cylinder units (48) (49) attached to the casing (23) of the means (9).

The operated member (47) includes a locked portion (47a) protruding in a direction away from the rotation axis of the rotating body (1), and the piston rod of the cylinder unit (48) (49). Pulling rollers (48b) (49b) that can enter the inside of the locked portion (47a) of the operated member (47) by the rotation of the rotating body (1) are provided on the (48a) and (49a). It is installed. However, the two cylinder units (48) (49) are the operated members of the gripping means at the cutting action position A among the three gripping means (13a) to (13c) as shown in FIG. A position at which the pulling roller (48b) can engage with (47) and a position at which the pulling roller (49b) can engage with the operated member (47) in the gripping means at the feed action position C; , Respectively.

Therefore, when the rotating body (1) is stopped at a predetermined position,
When the pull-in rollers (48b) (49b) are moved in the pull-in direction by the cylinder units (48) (49) as shown by phantom lines in FIG. 9, these rollers (48b)
The locked portion (4) of the operated member (47) engaged with (49b)
7a), the cam shaft (40) is pulled in against the urging force of the spring (46), and the cam surface (40a) of the cam follower roller (41a) moves the push pin (41) to the spring (43). ), The push pin (41) pushes the operated portion (36a) of the movable arm (36) to push the movable arm (36) into the spring (38). It is opened against the urging force of. That is, the movable arm (36) in the gripping means (for example, the gripping means (13a) (13c) stopped at the cutting action position A and the delivery action position C has a fixed arm (34) around the support shaft (35). When the retracting rollers (48b) (49b) of the cylinder unit (48) (49) are returned, the cam shaft (40) is retracted by the urging force of the spring (46). With the return, the push pin (41) is returned and returned by the urging force of the spring (43), so that the movable arm (36) is closed and returned by the urging force of the spring (38).

Fixed arm (3) in the gripping means (13a) to (13c)
4) and the movable arm (36) have two gripping pieces (50a) (50b) and (51a) (51b) attached to the inside so that they can be exchanged, as shown in FIGS. 7 and 8. The V-shaped attachment members (52) (53) are detachably attached so as to face each other. However, the steel pipe (3) is gripped by the four gripping pieces (50a) to (51b) in the circumferential direction between the fixed arm (34) and the movable arm (36). The illustrated gripping pieces (50a) to (51b) are used when the diameter of the steel pipe (3) to be gripped is the maximum and the cutting length is longer than the length of the gripping means (13a) to (13c). The holding pieces (50a) to (51b) shown by phantom lines in FIG. 8 are used when the diameter and the cutting length of the steel pipe (3) to be held are the minimum. In this way, the grip pieces (50a) to (51b)
Can be replaced with one corresponding to the diameter and cutting length of the steel pipe (3) to be gripped.

The stopper (2) shown in FIG. 1 passes through the cutting means (4) and the gripping means (eg, gripping means (13a)) stopped at the cutting action position A and is fed in the axial direction. Stopper plate (5
4) is equipped. This stopper plate (54)
As shown in FIG. 12 to FIG. 14, it is attached to a movable body (57) supported by a pair of guide shafts (56) installed on a support base (55) so as to be movable in the axial direction of the steel pipe (3). The movable body (57) is supported by the guide shaft (56) so as to be movable in the axial direction of the steel pipe (3) and is reciprocally moved by the cylinder unit (58). It is connected via a (60) so as to be movable in a far and near direction within a certain range, and is held at a position most distant from the driving body (59) by a spring (61) interposed therebetween. Reference numeral (62) is a stopper for the forward limit of the drive body (59), and (63) is a stopper for the approach limit of the movable body (57) to the drive body (59).

The end-cutting stopper (8) shown in FIG. 1 is a stopper which can be slidably inserted into and removed from the gripping means (eg, gripping means (13a)) stopped at the cutting action position A as shown in FIG. It is equipped with a plate (64). The stopper plate (64) is attached to a movable body (67) supported by the slide guide (65) and reciprocally moved by the cylinder unit (66) to support the slide guide (65) and the cylinder unit (66). The support base (68) is configured such that its position can be adjusted in the axial direction of the steel pipe (3).

Although not shown in FIGS. 1 and 2, a length measuring means is provided side by side at the feeding action position C where the feeding means 6 is arranged.

That is, as shown in FIGS. 15 to 19, the delivery means (6) is pivoted on the casing (23) of the rotary body drive means (9) by a horizontal support shaft (69) so as to be swingable left and right. A movable plate (70) mounted on the push plate (73) is supported by a guide rod (71) and a cylinder unit (72) so that the push plate (73) can be moved back and forth. A length measuring means (75) is provided on the support base (74). The length measuring means (75) is supported by two guide shafts (76) provided upright on the support base (74) so as to be movable up and down, and is vertically moved by a cylinder unit (77). ), A guide rail portion (79) horizontally connected from the lift table (78) to a position above the rotating body (1), and a cylinder unit (80) movably supported by the guide rail portion (79). A movable rail (81) connected to the piston rod (80a) of the cylinder unit (80) and movably supported by the guide rail portion (79), and movably fitted to the movable rail (81). A pair of sandwiching plates (83) (84) attached to the movable body (82) and the cylinder unit (80), the movable body (8
The screw shaft (85) with a handle, which is screwed through the female screw body (82a) connected to 2) and is rotatably supported by the free end of the movable rail (81), and the cylinder unit (80). It is composed of a length measuring sensor (87) attached to the bracket via a bracket (86). This length measuring sensor (87) outputs a detection signal only when the actuator (87a) is pressed by a certain amount by the rear end portion (80b) of the piston rod (80a) in the cylinder unit (80). When the piston rod (80a) of the cylinder unit (80) is in the stroke limit in the direction of pushing out the movable rail (81), the piston rod rear end (80
The gap S1 between b) and the actuator (87a) of the length measurement sensor (87) is set to be slightly shorter than the stroke S2 of the piston rod (80a). In addition, (85a) is
The handle for rotating the screw shaft (85), (82a) is the movable body (8
It is a lock lever that fixes 2) to the movable rail (81).

The sending means (6) and the length measuring means (75) are interlockingly connected to each other by an interlocking mechanism (88). The interlocking mechanism (88) is attached to the cam follower roller (89) pivotally supported on the upper end of the movable plate (70) of the sending means (6) and the lift table (78) of the length measuring means (75). And a cam plate (91) having a cam groove (90) into which the cam driven roller (89) is loosely fitted.

However, as shown in FIGS. 15 and 18, the cam groove (90) has a vertical posture in which the push plate (73) is located directly below the sandwiching plate (84) when the lift table (78) is at the upper limit position. The movable plate (70) is held in the taking position, and when the elevating table (78) descends as shown in FIG. 20, the pushing plate (7)
When the movable plate (70) is swung so that 3) escapes laterally laterally from the lowering path of the holding plate (84), and when the elevating table (78) reaches the lower limit, the pushing plate (73) Move the movable plate (7) to the position where it tilts to the side of the holding plate (84).
0) is formed. In other words, the interlocking mechanism (88) switches the sending means (6) to the retracted position where it does not interfere with the length measuring means (88) when the length measuring means (75) descends from the retracted position to the length measuring operating position. On the contrary, when the length measuring means (75) rises from the length measuring operating position to the retracted position, the feeding means (6) is switched to return to the original feeding operating position.

The cutting means (4) is supported by a rotary cylinder (92) through which the steel pipe (3) moves, as shown in FIG. 21, and a diametrically movable support at the front end of the rotary cylinder (92). And a tool rest (94) for holding a cutting tool (93), and the rotary cylinder (92) can be rotated by a motor (95) shown in FIGS. 1 and 11, and the tool rest (94)
Can be moved in a centripetal direction or a centrifugal direction by a cutting feed mechanism (not shown).

Further, the chamfering means (5a) (5b) are, as shown in FIG. 2 and FIG. 22, an edge chamfering rotary member (96), a motor (97) for rotationally driving the rotary member (97), and the rotary member (96). ) And a base unit (98) supporting a motor (97) are reciprocally moved in the axial direction of the steel pipe.

The cutting apparatus of the present invention configured as described above can be used as follows.

First, as shown in FIG. 12, the stopper plate (54) of the stopper (2) was moved by the cylinder unit (58) to the forward limit position (the position where the driving body (59) contacts the stopper (62)). At this time, the distance 1 from the cutting position P by the cutting means (4) to the stopper plate (54) is smaller than the set cutting length L, and the moving distance (stopper (57) of the movable body (57) with respect to the driving body (59) is reduced. The movable table (12) of FIGS. 3 and 4 supporting the stopper (2) and the chamfering means (5b) so that the distance (d) between the (63) and the driving body (59) is shortened. Adjust the position of.

The steel pipe (3) to be cut is fed into the rotating cylindrical body (92) in the cutting means (4) as shown in FIG. 21, but the tip irregular portion of the steel pipe (3) is cut. When it is necessary to remove it, as shown in phantom lines in FIGS. 12 and 21, respectively, the stopper plate (64) of the end cutting stopper (8) is moved to the forward limit position by the cylinder unit (66). Let the stopper plate (64)
The leading end of the gripping means is advanced to a predetermined position inside the gripping means, for example, the gripping means (13a) at the cutting action position A. At this time, the stopper plate (64) moves in the space between the fixed arm side grip pieces (50a) (50b) and the movable arm side grip pieces (51a) (51b) of the grip means (13a). . Further, at this time, the ninth position provided corresponding to the cutting action position A
By the cylinder unit (48) of FIGS. 11 to 11, the gripping means (13a) at the cutting action position A is opened as described above (that is, the fixed arm (34 shown in FIGS. 7 and 8). ) Against the movable arm (36) has been opened)).

The tip of the steel pipe (3) is the stopper (8) for cutting the end.
If it comes into contact with the stopper plate (64), the releasing operation of the holding means by the cylinder unit (48) is released to close the holding means (13a) at the cutting action position A (that is, FIG. 7 and FIG. Movable arm (36) shown in FIG.
And the end cut portion of the steel pipe (3) is gripped.
In this state, the feeding of the steel pipe (3) is stopped, the cutting means (4) is operated, and the steel pipe (3) is cut by the cutting blade (93) shown in FIG.

When the end cutting of the steel pipe (3) has already been completed in the previous step, or when the end cutting is unnecessary, the stopper plate (54) of the stopper (2) is attached to the cylinder unit (58) as shown in FIG. Move forward to the forward limit position. In this case, the tip of the steel pipe (3) which is sent through the inside of the cutting means (4) comes into contact with the stopper plate (54), and this stopper plate (54) together with the movable body (57) is spring (61). ) Will be pressed and moved against the urging force. However, if the stopper plate (54) and the movable body (57) move backward by a predetermined distance d and the stopper (63) contacts the driving body (59), the stopper plate is moved from the cutting position P by the cutting means (4). The distance to the steel pipe tip that abuts (54) is the cut length L
Therefore, in such a state, the cylinder unit (48) switches the gripping means (13a) from the gripping-actuated state to the gripping-acting state to grip the steel pipe (3), and at the same time, The feeding is stopped, and the steel pipe (3) is cut at the cutting position P by the cutting means (4) as described above.

When the end cutting or the fixed size cutting of the steel pipe (3) is completed, the stopper plate (64) of the end cutting stopper (8),
Alternatively, the stopper plate (5
4), while rotating backward to the original standby position, rotate the rotating body (1) by 120 degrees so that the steel pipe end cutting portion or the fixed-size cutting steel pipe (3) gripped by the gripping means (13a) is It is moved to the next working position B. When the rotating body (1) is driven to rotate, the rotating body (1) is slightly pushed forward as shown in FIG. 6, so that the fixed-size cutting steel pipe (3) gripped by the gripping means (13a). And the cutting blade (93) of the cutting means (4) are separated from each other in the axial direction of the steel pipe so that they do not come into sliding contact with each other when the rotating body (1) rotates.

Of the chamfering means (5a) (5b) arranged on both sides of the rotating body (1) at the working position B, the chamfering means (5b) on the same side as the stopper (2) is shown in FIG. As shown in FIG. 4, a movable base (12) that supports the stopper (2).
(That is, since it is installed on the movable base (12) whose position is adjusted according to the set cutting length of the steel pipe (3) as described above, the rotation of the rotating body (1) causes the machining action as described above. When the sizing cut steel pipe (3) is fed to the position B, the chamfering rotary body (96) of the double-sided chamfering means (5a) (5b) is separated from both ends of the sizing cutting steel pipe (3) by a certain distance. Will be in position. Therefore, as shown in FIG. 22, the base (98) is moved by the cylinder unit (99) while the chamfering rotary member (96) is rotated by the motor (97).
By moving forward by a certain distance, the chamfering rotating bodies (96) that rotate are fitted to both ends of the fixed-size cutting steel pipe (3) held by the holding means (13a) at the working position B, respectively. Both edges of the steel pipe (3) can be chamfered. Of course, chamfering is not performed on the steel pipe end cut portion.

When the chamfering process for the above-mentioned fixed-size cut steel pipe (3) is completed, the chamfering rotary member (9) of the double-sided chamfering means (5a) (5b).
After retracting 6) to the original standby position, turn the rotor (1)
Is rotated by 120 degrees as described above by the drive means (9) to move the chamfered sizing-cut steel pipe (3) to the feeding action position C.

The length measuring means (75) arranged at the feeding action position C is
As shown in Fig. 15, the distance between the pair of sandwiching plates (83) (84) is longer than the preset cut length (the total length after machining when the total length is shortened by machining) by a predetermined length. Is adjusted. That is, as shown in FIG. 16, the distance S3 between the pair of holding plates (83) (84) is X + S2 (cylinder unit (80) when the cutting set length is X).
Stroke) and is longer than X + S1 (gap between the rear end portion (80b) of the piston rod and the actuator (87a) of the length measuring sensor (87)).

To adjust the distance between the sandwiching plates (83) and (84), the lock lever (82a) is loosened and the screw shaft (85) is rotated by the handle (85a), and one sandwiching plate is passed through the movable body (82). Move (83) back and forth on the movable rail (81). Of course, after adjustment, use the lock lever (82a) to move the movable body (82) (holding plate 8
3)) is fixed to the movable rail (81). However, the first
As shown in Fig. 6, when the cylinder unit (80) is at the stroke limit in the direction of pushing out the movable rail (81), the tip of the movable rail (81) becomes the stopper (79a) on the tip side of the guide rail part (79). When the rear end of the cylinder unit (cylinder body) (80) comes into contact with the rear end stopper (79b) of the guide rail portion (79), the position of the sandwiching plate (83) is determined.

As shown in FIG. 15, the gripping means (13
When the processed steel pipe (3) gripped in a) arrives, the elevating table (78) of the length measuring means (75) at the retracted position is lowered by the cylinder unit (77), and the length measuring means (75) is moved. 75) is switched to the length measuring action position, and the pair of sandwiching plates (83) (84) are positioned outside both ends of the steel pipe (3) as shown by phantom lines. Each holding plate at this time (83) (84)
And the gap between the machined steel pipe (3) and both ends of
As shown in the figure, (S3-X) / 2. On the other hand, as shown in FIG. 20, by the action of the interlocking mechanism (88), the sending means (6) is switched to the retracted position as described above, and the pushing plate (73) causes the holding plate (75) of the length measuring means (75). 84) and there is no fear of interference.

Next, fluid pressure is supplied to the cylinder chamber (80c) of the cylinder unit (80) shown in FIG.
When the movable rail (81) on the a) side and the cylinder unit (cylinder body) (80) are urged toward each other, the sandwiching plates (83) (84) respectively attached to the two are moved. Both ends of the processed steel pipe (3) will be sandwiched. At this time, the movable rail (81) on the side of the holding plate (83) and the cylinder unit (80) on the side of the holding plate (84).
Since both are movable with respect to the guide rail portion (79), one of the holding plates (83) and (84) comes first in the steel pipe (3).
Even if it abuts on the end of the steel pipe (3), the other holding plate will continue to move closer to the end of the steel pipe (3), so that both holding plates (83) (84) must be at both ends of the steel pipe (3). Will come into contact with.

If the length of the machined steel pipe (3) is equal to the preset cutting length X, or if it is within the allowable error range, the actuator (87) of the length measuring sensor (87).
A) is pressed by a fixed amount by the rear end portion (80b) of the piston rod and outputs a detection signal. If the length of the machined steel pipe (3) is longer than the cutting set length X and the error exceeds the allowable range, the piston rod rear end (80b) is the length measuring sensor (87). Since the sandwiching plates (83) (84) contact both ends of the steel pipe (3) before pressing the actuator (87a), the length measuring sensor (87)
Does not output a detection signal. On the contrary, when the length of the machined steel pipe (3) is shorter than the cutting set length X and the error exceeds the allowable range, the cylinder unit (80) contracts by the stroke S2, Since the actuator (87a) of the length measuring sensor (87) is pressed by the piston rod rear end portion (80b) by a certain amount or more, no detection signal is output from the length measuring sensor (87).

When the length of the processed steel pipe (3) is checked by the length measuring means (75) as described above, the movable rail (81) and the cylinder unit (cylinder body) (80) are mutually connected by the cylinder unit (80). Move it apart,
Both clamping plates (83) (84) are separated from both ends of the processed steel pipe (3), and then the lift (78) is raised by the cylinder unit (77) to move the length measuring means (75) to the original retracted position. Return to. At this time, as shown in FIG. 18, the interlocking mechanism (8
By the action of 0), the delivery means (6) is returned to the original delivery operating position. Therefore, as shown in FIG. 23, the gripping means (13a) at the delivery action position C is released by the cylinder unit (49) shown in FIGS. 9 to 11 as described above.
The push-out plate (73) of the feeding means (6) is moved forward by the cylinder unit (72), and the holding means (13a)
Chamfered sized cut steel pipe that was gripped in (3)
Can be extruded onto the worked steel pipe delivery chute (7) shown in FIGS. 1 and 2. At this time, the push-out plate (73) forms a space between the fixed arm side grip pieces (50a) (50b) and the movable arm side grip pieces (51a) (51b) in the grip means (13a). Will move.

Similarly to the chamfered fixed-size cutting steel pipe (3), the end portion of the steel pipe that has passed through the working position B without chamfering, as described above, has the feeding means (6) at the feeding position C. The extruding plate (73) of the holding means (13
It can be pushed from a) onto the chute (7). In this case, as shown in FIG. 1, the direction of the sorting movable chute (7a) connected to the tip of the chute (7) is switched to a different place from the chamfered sizing steel pipe (3). It is possible to deliver the steel pipe end cut portion. Of course, the machined steel pipe (3) judged to be a defective product by the length measuring means (75) can also be sent to a different place from the normal product by the movable chute (7a).

The above-mentioned fixed-size cutting of the steel pipe (3) at the cutting action position A, chamfering of the fixed-size cutting steel pipe (3) at the working action position B, and the processed fixed-size cutting steel pipe (3 at the feeding action position C). ) Is measured and sent simultaneously in parallel while the rotating body (1) is stopped.

Although a pair of chamfering means (5a) and (5b) for chamfering both ends of the workpiece (steel pipe (3)) are used as the machining means in the above embodiment, the machining means other than the chamfering means is used. Any processing means can be used. Further, a conveying means for grasping and conveying the workpiece between the cutting means, the processing means, and the feeding means (length measuring means), and a rotating body provided around the grasping means (13a) to (13c). Although it is composed of (1) and the intermittent driving means (9), when the above-mentioned means are arranged in parallel on a plane, it is also possible to use a conveying means which moves linearly back and forth. It is also possible to use a plurality of independent transporting means for each means.

Furthermore, the structure of the length measuring means (75) and the type of length measuring sensor used are not limited to those in the above embodiment. For example, as a length measuring sensor, it is possible to use a differential transformer consisting of a core attached to the piston rod rear end (80b) side and a coil attached to the cylinder body side of the cylinder unit (80), and a potentiometer. Is.

(Effects of the Invention) As described above, the cutting apparatus provided with the length measuring means of the present invention is capable of performing constant-dimension cutting of a long workpiece, machining of a workpiece that has undergone constant-length cutting, and a finished workpiece. The length measurement and the delivery of the workpiece after the length measurement can be sequentially performed. Particularly, according to the configuration of the present invention, it is possible to perform the length measurement and the delivery of the processed workpiece at the same place. Therefore, compared to the case where the position measurement and the delivery are performed at different positions, the cycle time until the completion of a series of actions can be shortened, the entire device can be downsized, and the device floor area can be reduced. .

Moreover, the sending means can be arranged close to the workpiece gripping part of the conveying means in the sending action position, as in the case where the length measuring means is not installed side by side, and the length measurement in the length measuring action position is possible. Since the delivery stroke of the delivery means can be shortened as compared with the case where the delivery means must be retracted to a position where it does not interfere with the means, the delivery means itself can be made compact.

[Brief description of drawings]

FIG. 1 is a plan view of the entire apparatus, FIG. 2 is a rear view of the same, FIG. 3 is a side view showing a stopper, a chamfering means, and a movable base supporting these, and FIG. 4 is a plan view of the movable base. FIG. 5 is a partial vertical cross-sectional side view showing the drive means for the rotating body, and FIG. 6 is a vertical cross-sectional side view showing the state when the drive means is driven.
The figure is a vertical sectional front view showing the gripping means and the grip releasing means.
8 is a cross-sectional plan view of the gripping means, FIG. 9 is a vertical cross-sectional side view of FIG. 7, FIG. 10 is a cross-sectional plan view of FIG. 9, and FIG. 11 is a rotary body driving means, cutting means and chamfering means. Front view showing, No. 12
Figure is a plan view showing a stopper for steel pipe receiving and stopper for end cutting, FIG. 13 is a side view showing a stopper plate driving mechanism of the stopper for steel pipe receiving, FIG. 14 is a front view of FIG. 13, and FIG. A side view showing the sending means and the length measuring means, FIG. 16 is a cross-sectional plan view of the length measuring means, and FIG.
FIG. 18 is a cross-sectional plan view of the figure, FIG. 18 is a vertical cross-sectional rear view of FIG. 15, FIG. 19 is a vertical cross-sectional rear view of the length measuring means, and FIG. 20 is a vertical cross-sectional rear view illustrating the operating state of the interlocking mechanism. Figure 23 shows cutting, processing,
It is explanatory drawing of each operation state of and. (1) ... Rotating body (conveying means), (2) ... Steel tube tip receiving stopper, (3) ... Steel tube (long workpiece), (4) ... Cutting means, (5a) (5b) ) ... Chamfering means (processing means), (6) ... delivery means, (7) ... machined steel pipe delivery chute, (8) ... end cutting stopper, (9) ... rotating body driving means, ( 10) (11) ... fixed base, (12) ... movable table, (13a) to (13c) ... gripping means (transporting means), (39) ... gripping releasing means, (48) (4
9) …… Gripping release cylinder unit, (50a) to (51
b) …… Grip piece, (54) (64) …… Stopper plate, (58) (66) …… Stopper plate driving cylinder unit, (70) …… Movable plate, (72) …… Extrusion plate driving Cylinder unit, (73) …… Extrusion plate, (75) …… Length measuring means, (77) …… Lifting cylinder unit, (78) …… Lifting platform, (80) …… Length measuring cylinder unit, ( 81) …… Movable rail, (83)
(84) …… Clamp plate, (87) …… Sensor for length measurement, (88)
…… Interlocking mechanism, (89) …… Cam driven roller, (90)…
… Cam groove, (93) …… Cutting blade, (96) …… Chamfering rotary body.

Claims (1)

[Claims] 1. A cutting means for cutting a long work piece fed in the axial direction to a fixed size, a processing means for processing the cut fixed size work piece, and a sending means for sending a processed work piece. ,
And a cutting device having a carrying means for holding and carrying the work piece between the respective means, and measuring the length of the worked work piece held at a position corresponding to the sending means. The length measuring means is provided so as to be movable between the length measuring operation position and the retracted position, and the sending means is configured to be displaceable to the retracted position that does not interfere with the length measuring means in the length measuring operation position. A cutting processing apparatus provided with a length measuring means, which is provided with an interlocking mechanism for interlocking the length measuring means and the sending means so that the sending means is displaced to the retracted position when the length measuring means moves to the length measuring working position.