JPS6013646Y2 - tube code stamping machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tube code stamping machine that automates the marking of pipe materials.

Conventionally, when stamping symbols on pipes, etc., each character was stamped using a hand hammer and a chisel.

In addition, commercially available stamping machines are designed to engrave limited shapes on a flat plate or a circumference, and are used to engrave objects that often change in size and have different engraved characters for each character, such as marine flanges. It was not suitable for the time.

According to the conventional method of stamping characters one by one with a hand hammer, the stamping operation was inefficient, and the depth of the stamped characters was uneven and sometimes difficult to read.

In addition, commercially available stamping machines require manual selection of characters and can only engrave the flange on the pipe as a single piece before welding, making it troublesome to deal with the pipe.

For this reason, processing after the stamping process, such as rearranging the combination of the engraved flange and the pipe to which it is attached, was difficult, and errors often occurred.

Therefore, the present invention aims to mechanize the marking work in order to improve these problems.

That is, the present invention includes a pair of vertically movable pipe holders that center and support a pipe on which a code is to be engraved, and a set of vertically movable pipe holders that center and support the pipe on which a code is to be engraved. a set of flange pedestals positioned and supported in the axial direction by a plurality of parallelly arranged stamping rings disposed above one end of the tube and having a plurality of letter molds on the outer periphery;
A character selection bar on which these marking rings are rotatably and slidably mounted in the axial direction is provided on the character selection bar so as to be able to protrude in the radial direction and to be able to be held in a notch formed in the inner periphery of the marking ring. a character selection mechanism comprising a pin with a cylindrical shape, two pulse motors for axial sliding and rotation of the character selection bar, a vertical hydraulic cylinder for pressing the marking ring against the circumferential surface of the tube; The tube code stamping machine includes a horizontal hydraulic cylinder that rotates the stamp ring and the tube relative to each other in a state in which the stamp ring and the tube are rotated relative to each other.

The present invention will now be described in detail with reference to embodiments illustrated in the accompanying drawings.

FIG. 1 shows the overall structure of the tube code stamping machine according to the present invention, FIG. 2 shows details of the stamping head, FIGS. 3a and 3b show the stamping ring, and FIG. 4 shows the character selection bar.

A movable saddle 2 is placed on one end of a bed 1 constituting the main body, a cylinder 3' is attached to the movable saddle 2, and a pipe holder 4' for carrying in the pipe is provided on the upper part of the ring 3'.

A cylinder 3 is similarly arranged on the other end side of the bed 1, and a pipe holder 4 for carrying in the pipe is provided on the upper part of the cylinder 3.

Also, on the upper left and right sides of bed 1 are 5.5' flange pedestals.
(5' is on the movable saddle).

The flange pedestals 5 and 5' are connected to a sliding pedestal 6 (second
), and this sliding table 6 is moved by a hydraulic cylinder 7.

Further, a flange guide plate 8 is disposed on the flange pedestals 5, 5', and a positioning device 9 (FIG. 1) in the longitudinal direction of the pipe is attached to press and position the flange end face against the flange guide plate 8.

A mechanism is provided above the flange guide plate 8 that moves up and down to stamp on the pipe material.

As shown in Fig. 2, this mechanism includes a marking guide ring 1.
0 and a large number of stamping rings 11 having a plurality of stamping character molds on the outer periphery and cutouts 11' for character selection on the inner periphery are provided in parallel.

This engraved ring 11 is attached to a character selection bar 12 as described later.
It can be rotated by.

The required number of engraved rings 11 are supported by a ring support 13.

Reference numeral 14 is a pulse motor for character selection.

The ring support 13 is supported by a slidable ring support support stand 15.

The pulse motor 16 is attached to the ring support 13 so as to select one of the plurality of engraving rings 11 having the necessary number of digits for character selection.

The ring support support stand 15 is supported by a support stand 18 so as to be slid by a hydraulic cylinder 17.

The entire structure is supported in such a way that it can be moved up and down by a hydraulic cylinder 19, so that the engraving ring 11 is pressed against the flange by the hydraulic cylinder 19.

20 is a guide bar for this vertical movement.

Further, as shown in FIG. 4, the character selection bar 12 is provided with a character selection pin 21, which is loaded with a string 22.

In FIG. 1, reference numeral 23 designates an idle plate that is lightly applied to the end face of the flange by a cylinder provided on the movable saddle 2 to prevent the pipe from meandering during stamping.

Reference numeral 24 indicates a workpiece in which a pipe and a flange are welded.

First, the character selection operation will be explained.

This character selection operation actually involves coding each of the plurality of engraving rings 11, and using a plurality of engraving molds for numbers and alphabetic characters provided by equally dividing the outer circumference of the engraving ring 11 to correspond to their angular positions. This is done based on input data in the form of tube codes commanded from the tape or operation panel.

For convenience of understanding, explanation of the automatic operation will be omitted here, and the basic operation of the illustrated mechanism will be explained.

First, the pulse motor 14 is activated to rotate the character selection bar 12 counterclockwise as shown in FIG. 6b, and the pin 21 attached to the character selection bar 12 is moved to the origin position (
position in Figure 6b).

Next, based on the input data among the plurality of engraving rings 11, the pulse motor 16 slides the character selection bar 12 in the axial direction thereof, and the pin 21 attached to this character selection bar 12 becomes the character selection target. Bring it to the engraving ring (the rightmost engraving ring position in Figure 5).

During this positioning operation, the pin 21 remains retracted into the character selection bar 12 (the state shown in FIG. 6b) and is moved while sliding on the inner peripheral wall of the other marking ring 11.

After the positioning is completed, the character selection bar 12 is moved clockwise by the pulse motor 14 in order to select the required character mold from among the plurality of character molds provided on the outer periphery of the selected engraving ring 11 (Fig. 6b). Rotate it.

Since the character molds are encoded by angles, the character selection bar 12 is rotated by changing the rotation angle corresponding to the character mold that requires one rotor.

By being rotated in the clockwise direction in this manner, the pin 21 necessarily encounters the cut-off portion 11' provided on the inner circumferential wall of the engraving ring 11 during one rotation along the inner circumferential wall of the engraving ring 11.

When reaching this notch 11', the bottle 21 protrudes due to the action of the spring 22 (Fig. 6a). The tip of the bottle 21 and the shoulder of the notch 11' engage, and the character selection bar 12 holds the engraving ring 11 together. Then, the letter mold is rotated further to an angular position where the predetermined character mold is directly below.

With the above steps, character selection for one of the plurality of engraved rings 11 is completed.

Then, the pulse motor 16 is operated again to slide the character selection bar 12 in its axial direction to select the next engraving ring based on the input data, and repeat the above operation for this.

In this way, a letter mold matching the required tube code is set.

Next, the marking operation will be explained.

The pipe to which the flange has been tacked or welded in the previous process is carried into the marking device by a carrying device (not shown), and the pipe is placed on a pipe holder 4 provided on the bed 1 of the device and in advance in response to changes in the total length of the pipe. It is placed on a pipe pedestal 4' provided on a moving movable saddle 2, thereby performing pipe centering.

Next, operate the cylinders 3 and 3', and the pipe holder will be mounted on the stand 4,
4' is lowered, and the flange holder rests the flange on the stand 5°5'.

Thereafter, the pipe longitudinal positioning device 9 presses the end face of one flange against the flange guide plate 8 to perform longitudinal positioning.

Guide plate 23 provided on the movable saddle 2 in conjunction with the guide plate 23
Push out with a cylinder and lightly touch the end of the flange on the opposite side.

After completing the centering and longitudinal positioning of the pipe, the pre-selected marking head is operated by the hydraulic cylinder 19 to move the marking guide ring 10 provided at the end of the plurality of marking rings 11 to the end surface of the flange. The engraving guide ring 10 and the flange holder clamp the flange on the stand 5 with a constant pressure.

Thereafter, the hydraulic cylinder 7.17 is operated and the flange receiver moves the stand 5 and the ring support 13 facing each other, thereby stamping the set selection characters on the end face of the flange.

During marking, the flange is guided by a flange guide plate 8 and a guide plate 23 to prevent the flange from meandering.

According to the pipe code stamping machine of the present invention, character selection is performed automatically, which prevents mistakes and improves operating efficiency.In addition, since the stamp is stamped on a flange that is tacked or welded to the pipe, it does not require the conventional stamping method. This eliminates the correspondence between the flange and pipe, which prevents mistakes.

In addition, all the engraving work is done automatically, so there is no need for an operator.

In addition, since the marking is performed using a constant pressure, there is no difficulty in distinguishing the marking due to unevenness unlike in the past, and there is a great advantage that the marking is clearly marked.

[Brief explanation of the drawing]

Figure 1 is a front view showing the overall structure of the tube code stamping machine of the present invention, Figure 2 is a side view showing details of the stamping head, Figure 3a is a side view of the stamping ring, and Figure 3b is the same stamping ring. FIG. 4 is a front view of the character selection bar. Fig. 5 is a partially enlarged sectional view showing further details of the engraving head shown in Fig. 2, Fig. 6a is an enlarged cross-sectional view of the character selection bar at the position of the bottle, and Fig. 6b shows the notch of the engraving ring. FIG. 6a is a diagram similar to that shown in FIG. 6a; 1...Bed, 2...Movable saddle, 3,3'
...Cylinder, 4,4'...Pipe holder, 5,5'...Flange holder, 6...
・Sliding table, 7. 17. 19... Hydraulic cylinder, 8... Flange guide plate, 9...
...Positioning device, 10...Engraving guide ring, 11...Engraving ring, 11'...Notch, 12...Character selection bar, 13・・・・・・
・Ring support, 14...Pulse motor, 1
5...Ring support support stand, 16...
・Pulse motor, 18...Support stand, 20...
...Guide bar, 21...Bin, 22...
... Spring, 23 ... Guide plate, 2
4...Work.

Claims (1)

[Scope of utility model registration request] A set of vertically movable pipe holders that center and support the pipe on which a code is to be engraved; a set of flange pedestals supported by the pipe; a plurality of parallelly arranged stamping rings disposed above one end of the tube and having a plurality of letter molds on the outer periphery; A character selection bar mounted so as to be slidable in the axial direction; a pin provided on the character selection bar so as to be able to protrude in the radial direction and engage with a notch formed in the inner periphery of the marking ring; and the character selection bar. a selection mechanism comprising two pulse motors for axial sliding and rotation of the bar; a vertical hydraulic cylinder for pressing the marking ring against the circumferential surface of the tube; A tube code stamping machine comprising a transverse hydraulic cylinder for rotating a ring and said tube relative to each other.