JP3292759B2 - Pipe end processing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe end processing apparatus suitable for forming a groove or the like by using a rolling roller at the end of a pipe or the like. 2. Description of the Related Art When plastic processing of a groove or a bead as shown in FIG. 10 is performed on an end of a pipe or the like, such a groove or a bead is formed by using a rolling roller. In this forming method, a predetermined groove or bead is formed on the outer periphery of the workpiece through a process as shown in FIG. 9, for example, by pressing a rolling roller rotated by a driving device against the workpiece such as a pipe. Therefore, as a processing device, a device for rotating and driving the rolling roller and a mechanism for pressing the rolling roller against the workpiece with a predetermined pressing force are indispensable. [0003] However, in the above-described apparatus, a mechanism for rotating the rolling roller and a mechanism for pressing the rolling roller against a workpiece with a predetermined pressure must be complicated. In particular, when three rolling rollers are used as shown in FIG. 6, the mechanism for driving and rotating each rolling roller and moving it toward the workpiece is further complicated, and the size of the apparatus is reduced. Was difficult. The inventor of the present invention has intensively developed the conventional rolling roller processing apparatus in order to reduce the size of the conventional rolling roller processing apparatus. As a result, a novel pipe end processing apparatus capable of omitting the driving and rotating mechanism of the rolling roller required in the conventional apparatus. Successful development. In this pipe end processing device, the rolling roller is rotated by using the frictional force generated when the rolling roller is pressed against the workpiece, so that the mechanism itself is simplified, and not only the device is reduced in size, but also the manufacturing cost is significantly increased. Reduction can be realized. [0004] In order to solve the problem, a technical means taken by the present invention is a pipe end processing apparatus for performing plastic working on a terminal of a pipe or the like. A clamping die for clamping, a rolling roller for rolling the clamped pipe end by rolling, a chuck for freely holding the rolling roller, a rotating mechanism for rotating the chuck, and the rolling roller A rolling roller moving mechanism that presses the pipe end with a predetermined pressure, the rolling roller moving mechanism includes a cam member slidably provided in the axial direction of the chuck, and a moving mechanism for the cam member. , Comprising a slide member that can move the rolling roller to the center of the chuck by moving the cam member,
The cam member is slidable by driving a rod connected to the cam member via a link operated by a hydraulic cylinder. A pipe as a workpiece is clamped and fixed by a clamp mold. At the center of the chuck, a cam member is guided by a guide member so as to be slidable in the left-right direction in the figure, and a rod is fixed to the cam member. The lower end of the vertical slide member is fitted to the cam member, and when the cam member moves, the vertical slide member also moves in the vertical direction. A rolling roller supporting member is attached to the vertical slide member, and a rolling roller is rotatably provided on the rolling roller supporting member. When the rod moves to the left in FIG. 5, the cam member also moves to the left, so that the vertical slide member moves downward, and the rolling roller support member also moves toward the center of the chuck. In this way, the rolling roller supported by the rolling roller support member also moves toward the center at the same time, and a predetermined process is performed on the clamped pipe end. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a pipe end processing apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory view of a rolling roller moving mechanism of the apparatus, and FIG. 3 is a sectional view taken along line AA in FIG. In FIG. 1, reference numeral 1 denotes a frame, on which a pipe end processing device main body 2 is slidably mounted on a guide rail (not shown) in a lateral direction in the figure. Reference numeral 3 denotes a hydraulic cylinder for moving the main body 2 on a guide rail according to a predetermined control procedure. The main body 2 is provided with a chuck 6 that is rotated by a driving device 4 via a transmission device 5, and a predetermined number of rolling rollers 7 are attached to the chuck 6. The rolling roller 7 can be moved toward the center of the chuck by a mechanism described later, and is formed at an end of a pipe 8 fixed by a clamp mold 9 as shown in FIG. Can be processed. Hereinafter, the details of the rolling roller moving mechanism constituting the present apparatus will be described with reference to the drawings. [Chuck Rotation Mechanism] In FIGS. 1 and 2, the chuck 6 is fixed to an end of a hollow rotary shaft 13, and the hollow rotary shaft 13
It is supported via 2. A pulley 14 is fixed to the hollow rotary shaft 13 by a key (not shown). A rotational force is transmitted to the pulley from the driving device 4 via the transmission device 5. Therefore, when the driving device 4 is driven, the hollow rotary shaft 13 also rotates via the driving device 4 → the transmission device 5 → the pulley 14, and the chuck 6 rotates with the hollow rotary shaft 13 accordingly. A rolling roller 7 is freely rotatably mounted on the chuck 6.
Further, the chuck is provided with a mechanism for moving the rolling roller 7 toward the center of the chuck 6. This mechanism rotates the rod 15 provided through the hollow rotary shaft 13 through the link 16 and the swinging member 17 by the hydraulic cylinder 18 to the left in the drawing as described later. The structure is such that the forming roller 7 is moved toward the center. Hereinafter, the moving mechanism of the rolling roller will be described with reference to FIGS. [Moving Rod] In FIG. 2, a connecting member 19 having a hat-shaped cross section is provided at the end of the hollow rotary shaft 13 so as to be non-rotatable on the hollow rotary shaft 13 and slidable in the left and right directions in the figure. I have. The connecting member 19 having a hat-shaped cross section includes
As shown in FIG. 3, a shaft 20 is fixed, and the shaft 20 is fixed to the rod 15 through an elongated hole 21 (FIGS. 1 and 4) formed in the hollow rotary shaft 13. The connecting member 19 is supported by a cover 24 via bearings 22 and 23, and the cover 24 is pivotally connected to the swing member 17 via a shaft 25. A hydraulic cylinder 18 is connected to one end of the swing member 17 via a link 16, and the other end of the swing member 17 is connected to a rotating shaft 30. The rotating shaft 30 is mounted on a shaft 31 via a horizontal link 32. The connection to the horizontal link 32 is provided to allow movement of the end when the swing link 17 swings. Accordingly, when the driving device 4 is driven and the hollow rotary shaft 13 rotates via the transmission device 5, the connecting member 19 is rotated.
Also rotates, and the shaft 2 fixed to the connecting member 19
The rod 15 fixed to the shaft 1 and the shaft 21 also rotates in the same direction as the hollow rotary shaft 13. When the hydraulic cylinder 18 is operated in such a rotating state, the swing member 17 swings to the left in FIG. Rocking member 1
By the swing of 7, the cover 24 pivotally attached to the swing member 17 also moves in the same direction. Due to the movement of the cover 24, the connecting member 19 having a hat-shaped cross section rotating via the bearings 22 and 23 also moves in the same direction. At this time, connecting member 1
The shaft 20 fixed to the rod 9 and the rod 15 moves in the elongated hole 21 of the hollow rotary shaft 13 to the left in FIG.
Accordingly, the rod 15 also moves to the left in FIG. In this way, when the chuck 6 is in the rotating state, the rod 15 can move to the left in FIG. 2, and the rolling roller provided on the chuck moves toward the center of the chuck by the movement of the rod 15 according to the configuration described later. Will do. [Movement of Rolling Roller] In FIG. 5, a cam member 38 is provided at the center of the chuck 6 with a guide member 36.
The cam member 38 is provided with the rod 15 and the bolt 15
Has been fixed by. The cross section of the cam member 38 is shown in FIG.
The groove shown in FIG. 3 is provided to be inclined downward and to the right in the figure, and the lower end of the vertical slide member 40 is fitted in this groove. When the cam member 38 moves in the left-right direction in the figure, the vertical slide member 40 also moves along with the guide member 37.
It moves up and down along. A rolling roller support member 39 is attached to the vertical slide member 40, and the rolling roller 7 is rotatably provided on the rolling roller support member 39. Therefore, when the rod 15 moves to the left in the drawing, the cam member 3
8 also moves to the left, the vertical slide member 40 moves downward with this, and the rolling roller support member 39 also moves toward the center. In this way, the rolling roller support member 3
The rolling roller 7 supported by the roller 9 also moves toward the center at the same time, whereby predetermined processing is performed on the pipe end. Next, a mold for clamping a pipe will be described with reference to FIG. FIG. 8 is a view taken in the direction of arrow D in FIG. 1, where 41 is a fixed die, 42 is a moving die, 9,
Reference numeral 9 'denotes a clamp die. The clamp die 9 is fixed to a fixed die, and the clamp die 9' is fixed to a movable die 42 by bolts. The pipe is clamped and fixed by the two clamp dies 9, 9 ', and is subjected to predetermined processing by a rolling roller. As described above, in the pipe end processing machine according to the present invention, the rolling roller is rotatably mounted on the rotating chuck, and the rolling roller is provided so as to be movable toward the center of the chuck. It is possible to reduce the size of the terminal processing machine, and to promote more efficient work. In the above embodiment, the hollow rotary shaft is driven by the pulley, and the rod is moved in the axial direction using the link. However, another transmission mechanism may be employed. Various modes such as a mechanism for directly moving the rod in the axial direction can be adopted. Furthermore, the present invention may be embodied in various other forms without departing from its spirit and essential characteristics. Therefore, the above-described embodiments are merely examples, and should not be construed as limiting. All modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention. As described above in detail, according to the pipe end processing apparatus according to the present invention, a mechanism for forcibly driving the rolling roller is not required, thereby promoting the miniaturization of the apparatus. In addition, since the structure is simplified, the manufacturing cost can be significantly reduced. Excellent effects can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a pipe end processing apparatus according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of a rod moving mechanism of the apparatus. FIG. 3 is a sectional view taken along line AA in FIG. 2; FIG. 4 is a sectional view taken along line BB in FIG. 3; FIG. 5 is an explanatory view of a moving mechanism of a rolling roller. FIG. 6 is a front view of a rolling roller. FIG. 7 is a sectional view taken along line CC in FIG. FIG. 8 is a perspective view of a clamp die of the pipe end processing apparatus. FIG. 9 is an explanatory view of a pipe end processing step. FIG. 10 is an example of processing a pipe end; [Description of Signs] 1 Frame 2 Pipe end processing device main body 3 Hydraulic cylinder 4 Drive device 5 Transmission device 6 Chuck 7 Rolling roller 8 Pipe 9 Clamp die

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B21C 37/00-43/04

Claims (1)

(57) [Claims] In a pipe end processing apparatus for performing plastic working on an end of a pipe or the like, the apparatus performs processing by rolling on a clamped die for clamping a pipe at a predetermined position and a clamped pipe end. A rolling roller to be applied, a chuck that holds the rolling roller in a freely rotatable manner, a rotation mechanism that rotates the chuck, and a rolling roller moving mechanism that presses the rolling roller against a pipe terminal at a predetermined pressure. The rolling roller moving mechanism can move the rolling roller to the center of the chuck by a cam member slidably provided in the axial direction of the chuck, a moving mechanism of the cam member, and movement of the cam member. The cam member is slidable by driving a rod connected to the cam member via a link operated by a hydraulic cylinder. Pipe end processing apparatus characterized by the.