JP2553632Y2 - Grooving device for cylindrical pipes - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grooved device for a cylindrical pipe-shaped work incorporated in one station of a rotary feed type continuous processing machine.

[0002]

2. Description of the Related Art Conventionally, an apparatus for pressing a groove Wa as shown in FIG. 10 against a cylindrical pipe-shaped workpiece W as shown in FIG. There is a device. As shown in FIG. 11, a cylindrical frame 104 is movably provided on a guide 103 provided on a side surface of a base 102 erected on a conveyor frame 101, and is rotatably supported by the cylindrical frame 104. A rotatable grooved roller 107 is provided on the lower end of the hollow shaft 105 at a bowl-shaped portion 105a so as to be freely opened and closed, and an upper and lower shaft 108 for opening and closing the grooved roller 107 is fitted into the hollow shaft 105 so as to be movable in the axial direction. The connecting rod 1 urged upward by 109 and driven by a cam member or a cylinder member (not shown)
10. After the cylindrical frame 104 is lowered via the arm 111 until the product receiver 112 is brought into contact with the upper end of the workpiece W conveyed by the conveyor 113 and positioned at a predetermined position, the vertical axis is opposed to the force of the spring 109. 108 is pressed down to close the grooving roller, and the work W is subjected to grooving processing.

[0003]

The grooved device for cylindrical pipes described in Japanese Utility Model Publication No. Hei 3-9856 described in the prior art is incorporated in a station provided in the middle of a work transfer path by a linear transfer type conveyor. In addition, there is a problem that it is difficult to increase the processing efficiency by, for example, about 15 to 20 pieces or more per minute due to intermittent feeding in which the workpiece conveyance is interrupted during the grooving. The present invention has been made in view of the above-mentioned problems of the prior art, and the purpose of the present invention is to incorporate it into one station of a rotary feed type processing machine to perform grooving processing during work transfer. It is an object of the present invention to provide a highly efficient cylindrical work groove forming apparatus.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a cylindrical pipe grooving apparatus according to the present invention is a cylindrical pipe grooving apparatus incorporated in one station of a rotary feed type continuous processing machine. A rotor frame and a work transport disk having notched holes for work feed at even intervals on the outer periphery so as to be rotatable about a vertical fixed axis fixed to the rotary conveyor frame, and the rotor frame and the workpiece transport disk are provided. A first driving unit that rotates is provided, and the gripper member is radially arranged so that a gripping center of an openable / closable gripping jaw for gripping the cylindrical tube-shaped workpiece on the workpiece transport disk is concentric with the center of the notch for feeding the workpiece. And a second driving means for opening and closing the gripping claws of the gripper member is provided. The rotor frame body is provided with a plurality of cutout holes concentric with the workpiece feed notch hole and the gripping center of the gripper member. A main shaft of the main shaft is rotatably and axially movable and vertically provided, and a plurality of rotatable grooved rollers at the lower end of the main shaft are provided concentrically with a grooved tool unit that is opened and closed by a bell-shaped plunger movable in the axial direction. First cam driving means for axially moving the plurality of main shafts by a first cam fixed to the fixed shaft by rotation of the rotor frame is provided, and second cam fixed to the fixed shaft by rotation of the rotor frame. A second cam driving means for axially moving the bell-shaped plunger by a cam to open and close the grooved roller is provided, and a third driving means for simultaneously rotating the plurality of main shafts is provided.

[0005]

When the work is delivered to the work transfer disk which also serves as a rotary conveyor element, the work is gripped by the gripper member, and at the same time, the main shaft concentric with the work starts to descend, and the core metal of the leading grooved tool unit. The roll is slightly inserted into the mouth of the work. Next, after the bell-shaped plunger of the grooving tool unit is lowered, the grooving roller is closed and grooving is performed, and then the bell-shaped plunger is raised, and the grooving roller is opened and separated from the workpiece. Next, when the main shaft moves up and the grooving tool unit moves away from the work, the work reaches the delivery position, the gripper member opens to release the work, and the work is carried out to the next station by the rotary conveyor.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. A fixed shaft 2 stands vertically on a lower plate 1 a of the rotary conveyor frame 1, and a lower rotor frame 4 is rotatably supported on the fixed shaft 2 via a sleeve 3. An upper rotor frame 5 is concentrically fixed on the lower rotor frame 4 with a plurality of stays (not shown) at a distance, and a plurality of main shaft sleeves 6 are circumferentially mounted on the rotor frames 4 and 5. It is vertically movably supported at equal intervals and vertically. The main shaft 7 is rotatably supported by a plurality of bearings on the main shaft sleeve 6, and a groove forming tool unit 36 described later is concentrically fixed to a lower end of the main shaft 7.

A work receiving disk 9 is fixed to the upper end surface of the flange 3a of the sleeve 3 so as to be at the same height as the upper plate 1b of the rotary conveyor frame 1, and is fixed to the work receiving disk 9. As shown in FIG. 3, a semicircular work transfer notch 11a corresponding to the axis of the main shaft is formed in the work transfer disk 11 at an equal interval on the outer periphery as shown in FIG. Further, as shown in FIG. 2, vertical shafts 12 and 13 are fixed to the lower plate 1a of the rotary conveyor frame 1 at positions separated from the fixed shaft 2 by a predetermined distance, and are rotatable about the vertical shafts 12 and 13. Work transfer rotors 16 and 17 are fitted to upper ends of the supported hollow shafts 14 and 15.

The work transfer rotors 16 and 17 are provided with semicircular work transfer notches 16a and 17a at equal intervals on the outer periphery, and a gear 18 fixed to the flange 3b of the sleeve 3 is provided with a gear 18 fixed to the hollow shaft 14. The gears 15 and 21 are fixedly engaged with gears 19 and 21, respectively. The hollow shaft 15 integrally has a gear 22, which is meshed with an intermediate gear 23, and a worm wheel 24 provided concentrically with the intermediate gear 23 is meshed with a worm (not shown) of a drive shaft 25, Drive shaft 25
Is rotated by a drive motor (not shown). The work W is fed into the notch hole 11a of the work transfer disk 11 from the preceding station through the notch hole 16a of the work transfer rotor 16 rotated by such a gear train, and further the notch of the work transfer roller 17 is provided. The work W is sent out to the next station via the hole 17a.

FIG. 4 shows the outer periphery of the cylindrical portion of the work transfer disk 11.
A mounting seat 11b corresponding to the notch hole 11a is formed as shown in FIG. 5, and an air gripper 29 having an openable / closable gripping claw 28 is formed on the mounting seat 11b such that the workpiece gripping center is concentric with the spindle 7 axis. It is fixed radially. An air switching valve 31 for opening and closing the gripping claw 28 of the gripper 29 is radially fixed on the upper rotor frame 5, and a cam 32 for operating the air switching valve 31 is fixed to the fixed shaft 2. 31 is supplied with pressurized air via a rotary joint 33. Further, the fixed shaft 2 has a lead cam 34a protruding from the outer periphery in the middle of the rotor frames 4 and 5.
A roller base 35 having two cam followers 35a and 35a for holding the lead cam 34a is fixed to the main spindle sleeve 6.

As shown in FIG. 6, a grooved tool unit 36 fixed concentrically at the lower end of the main shaft 7 has a T-shaped guide groove 37a formed at the lower end of a cylindrical unit body 37 radially into three equally circumferential parts. A moving piece 38 is movably engaged with the guide groove 37a, and is constantly urged to open by a spring 39. A grooving roll 41 is rotatably supported in a horizontal plane by a base metal 30 fixed to the bottom surface of the moving piece 38, and a core metal roller 43 is rotatable at a lower end of the unit main body 37 via a support shaft 42. It is provided concentrically.

A bell-shaped plunger 44 is fitted on the outer periphery of the unit body 37 so as to be movable in the axial direction. The rotation of the plunger 44 is prevented by a key 45, and the plunger 44 is constantly urged upward by a spring 46. , Plunger 4
A snap ring 47 for regulating the rising end position of the unit 4 is attached to a position near the upper end of the unit main body 37. The plunger 44 has an outer peripheral groove 44b at the upper end, and the skirt portion is formed with a large-diameter tapered hole 44a on the lower side, and the distal end contact portion 38a of the movable piece 38 is fitted in the tapered hole 44a.
9, the grooving roll 41 is opened and closed by the vertical movement of the plunger 44, and the grooving of the work W is performed. The grooving tool unit 36 is fixed to the main shaft 7 by a collet bush 40.

On the other hand, a linear guide 48 as shown in FIG. 5 is fixed to the cylindrical portion 4a of the lower rotor frame 4 in the same number and parallel to the main shaft sleeve 6, and a shifter 50 is movably provided on the linear guide 48. A shifter fork 51, on which a roller 62 engaging with the groove 44b of the plunger 44 is pivotally mounted, is mounted on the slide portion 49 of the shifter 50 so as to be vertically adjustable. The relative position adjustment between the slide portion 49 and the shifter fork 51 is performed by adjusting the pinion 5 fixed to substantially the center of a shaft 53 rotatably provided on the shifter fork 51.
4 is engaged with the rack 52 fixed to the slide portion, and the shaft 53
The position is adjusted by turning the fixing knob 55 on the front side, and after the positioning, both are fixed by a clamp bolt (not shown).

As shown in FIG. 7, a lower end of a feed rod 57 fitted to the lower rotor frame 4 so as to be movable in the axial direction is fixed to the upper end of the slide portion 49. The cam follower 58 is pivotally supported. The feed rod 57 is constantly urged upward by a spring 61, and a rotor surface is attached to a lower cam surface 59 a of an arcuate plate cam 59 attached to the lower end of the cylindrical cam body 34 fixed to the fixed shaft 2. A cam follower 58 is pressed against the plunger 44 at a predetermined turning position of the frames 4 and 5 to move the plunger 44 in the axial direction.

The main shaft 7 has an upper end formed on a spline shaft 7a. A gear 63 movably fitted to the spline shaft 7a is moved in the axial direction by a bracket 60 fixed on the upper rotor frame 5. Is regulated. on the other hand,
As shown in FIG. 8, a drive shaft 64 is loosely inserted into a center hole 15a of the vertical shaft 15 fixed to the rotary conveyor frame 1, and the drive shaft 64 is supported by a support 65 mounted on an upper plate 1b of the frame. And is rotatably supported by a bracket 66 fixed thereto.

The drive shaft 64 is rotated by a drive motor (not shown), and a pulley 67 is fitted on the upper end.
A belt (not shown) is stretched between a fixed pulley 69 and a pulley 67 at the upper end of a flanged hollow shaft 68 rotatably provided by a plurality of bearings at the upper end of the fixed shaft 2. Further, a gear 71 fixed to the lower end of the flanged hollow shaft 68 is meshed with the gear 63, and a plurality of main shafts 7 are simultaneously rotated by rotation of the drive shaft 64. FIG. 9 is a front view of the work W before the groove processing, and FIG. 10 is a front view of the work W after the processing of the groove Wa.

Next, the operation of the embodiment of the present invention will be described. The work W before grooving shown in FIG. 9 is fed through the notch hole 16 a on the outer periphery of the work transfer rotor 16, delivered to the notch hole 11 a of the work transfer disk 11 at the point a, and placed on the work receiving table 9. When the air gripper 29 is put on the air gripper 29, the air switching valve 31 is switched by the cam 32.
The work W is gripped by closing the work 8, and the work W rotates around the fixed shaft 2 while keeping concentricity with the main shaft 7.

The main shaft 7, which is concentric with the work W rotating around the fixed shaft 2, is constantly rotated by the drive shaft 64 via pulleys 67, 69 and gears 71, 63.
Is held by the air gripper 29, and at the same time, the lowering is started by the convex lead cam 34a of the cylindrical cam body 34 via the cam follower 35a. Then, it reaches the lower moving end at a certain turning angle, and the tip of the core metal roller 43 of the grooved tool unit 36 at the tip is inserted into the mouth of the work W. At this time, the cam follower 58 at the upper end of the feed rod 57 abuts against the cam surface 59a of the plate cam 59, the bell-shaped plunger 44 starts moving downward against the force of the springs 61 and 46, and the tapered hole 44a in the skirt portion. As a result, the grooving roller 41 is closed against the force of the spring 39, and grooving of the work W is started.

When a certain turning angle is reached, the plunger 44 is positioned at the lower moving end and the grooving process is completed. In the subsequent turning, the plunger 44 moves upward and the grooving roller 41 starts to open. When it reaches the position, the opening ends and the grooving roller 41 separates from the work W. Next, when the main shaft 7 starts to move up and reaches the work unloading point b, the main shaft 7 is positioned at the rising end, the lower end surface of the grooving tool unit 36 is positioned above the upper end surface of the work W, and the air gripper is opened. To release the work W. Then, the work W is delivered to the notch hole 17a of the work transfer rotor 17, and is carried out to the next station. In this way, the work W of FIG. 9 continuously fed to the point a of the corresponding station one after another by the work transfer rotor 16 is subjected to grooving while turning to the point b, and becomes the work W of FIG. The workpieces are sequentially carried out to the next station by the work transport rotor 17.

[0019]

[Effects of the Invention] Since the present invention is configured as described above, the following effects can be obtained. Incorporating a cylindrical tube-shaped work grooving device into one of the stations of the rotary feed type continuous processing machine, it can rotate and move up and down on the rotor frame while the work moves continuously on the rotary conveyor conveyor path. Since the grooving process is performed by the plurality of grooving tool units at the tip of the spindle provided in the machine, the movement of the machine becomes smoother compared to the intermittent feed type processing machine where the work transfer is interrupted during the grooving process. In addition, it is possible to realize an economical continuous processing machine that is more than twice as efficient as the prior art and consumes less power.

[Brief description of the drawings]

FIG. 1 is a front view of a grooving device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the rotary work transfer mechanism, showing a rotor frame driving portion of the grooving device.

FIG. 3 is a top view configuration diagram of a rotary work transfer mechanism.

FIG. 4 is a top view of a work holding portion of the grooving device.

FIG. 5 is a top view of a grooving tool unit driving shifter portion of the grooving device.

FIG. 6 is a sectional view of a grooving tool unit.

FIG. 7 is a front view showing a driving mechanism of the grooving tool unit.

FIG. 8 is a front view showing a drive mechanism for rotating the main shaft of the grooving device.

FIG. 9 is a view of a work before grooving.

FIG. 10 is a view of a work after grooving.

FIG. 11 is a front view of a prior art cylindrical tube groover.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rotary conveyor frame 2 Fixed shaft 4,5 Rotor frame 6 Main shaft sleeve 7 Main shaft 11 Work transfer disk 11a Notch hole 28 Gripping claw 29 Air gripper 36 Grooving tool unit 34 Cylindrical cam body 34a
Convex lead cam 41 grooved roller 44 bell-shaped plunger 50 shifter 59 plate cam

Claims (1)

(57) [Scope of request for utility model registration] 1. A grooving device for a cylindrical tube-shaped work incorporated in one station of a rotary feed type continuous processing machine, comprising: a rotor frame and an outer periphery rotatable around a vertical fixed axis fixed to a rotary conveyor frame. A work transfer disk having notch holes for work feed is provided at equal intervals, a first drive unit for rotating the rotor frame and the work transfer disk is provided, and the cylindrical pipe-shaped work is placed on the work transfer disk. A gripper member is provided radially so that the gripping center of the gripper that can be opened and closed is concentric with the center of the notch for workpiece feeding, and second driving means for opening and closing the gripper of the gripper member is provided. A plurality of spindles are rotatably and axially movable and vertically provided concentrically with the workpiece feed notch hole and the gripping center of the gripper member, and are rotatable at the lower end of the spindle. A plurality of grooving rollers are concentrically provided with a grooving tool unit which is opened and closed by a bell-shaped plunger movable in an axial direction, and the plurality of grooving rollers are fixed to the fixed shaft by the rotation of the rotor frame. A second cam driving means for moving the main shaft in the axial direction is provided. The second cam fixed to the fixed shaft by the rotation of the rotor frame moves the bell-shaped plunger in the axial direction to open and close the grooved roller. A grooved device for a cylindrical tube, comprising a cam driving means and a third driving means for simultaneously rotating the plurality of spindles.