JP2997401B2 - Printer for cutting work - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for printing various information on a cut end face of a cut work obtained by cutting a rod-shaped work to a predetermined length by a cutting device.

[0002]

2. Description of the Related Art As a cutting device for cutting a bar-shaped work into a predetermined length, a bar-shaped work is fed by a predetermined length in a longitudinal direction by a feeding means from a position above a cutting position by a band saw or the like. There is known a rod-shaped workpiece cutting device which clamps the workpiece by a clamp provided on a side thereof, cuts the bar-shaped workpiece at the cutting position, and discharges the separated workpiece to a lower side of the cutting position by discharging means. .

[0003] In the case of displaying size, material and other information on the cut end face of the cut work discharged from such a rod-shaped work cutting apparatus, conventionally, information necessary for manual operation is displayed on the cut end face of the discharged cut work. And a manual printing method using a sheet with an information printing section cut out and a spray for painting.

[0004]

The above-described printing method requires a great deal of labor and time, for example, it is necessary to transport a heavy cut work to a printing work place and arrange it in a printing-friendly direction. Moreover, it is difficult to increase the amount of information to be displayed, and improvement measures have been required. The present invention has been made in view of such conventional problems, a printing device that can be used in addition to the cutting device as described above,
It is an object of the present invention to provide a printing device capable of automatically printing by a printing means on a cut end surface of a bar-shaped work to be cut.

[0005]

To achieve the above object, a cutting work printing apparatus according to the present invention is provided with a reference numeral of an embodiment to be described later. Is fed by the feeding means 25 in the longitudinal direction by a predetermined length, and is clamped by the clamping means 34 disposed on the upper side of the cutting position CP, and the rod-shaped workpiece W is cut at the cutting position CP and separated. A printing device which is added to a rod-shaped work cutting device for discharging the cut work CW to the lower side of the cutting position CP by a discharging means 39, comprising a printing means 1 and a position changing means 2 thereof. Reference numeral 1 denotes printing on the end face WS of the rod-shaped workpiece W located at the cutting position CP, and the cutting position CP
Is disposed outside the discharge path of the cut work CW on the lower side, and a position changing means 2 is provided with a vertical drive mechanism 7 for moving the printing means 1 up and down and a printing means 1 in a longitudinal direction of the rod-shaped work W. On the other hand, a left-right drive mechanism 6 for moving in the right-left horizontal direction orthogonal to the right-hand side is provided.

In implementing the above-described apparatus of the present invention, a back-and-forth driving mechanism 8 for reciprocating the printing means 1 in the longitudinal direction of the rod-shaped work W can be added to the position changing means. In addition, the printing unit 1 is configured to perform printing in a horizontal direction on the bar-shaped work end surface WS located at the cutting position CP by a horizontal movement by the left and right driving mechanism 6, the printing level being adjusted by the vertical driving mechanism 7. it can. Further, the printing means 1 is provided with an air blow nozzle 5 disposed on the moving direction side at the time of printing with respect to the leading end printing portion 1a, and the nozzle 5 is provided at the printing position of the rod-shaped work end surface WS prior to printing. It can be configured so that air is injected from the air.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 to 3, reference numeral 1 denotes printing means, and 2 denotes position changing means. The printing means 1 is supported on a substrate 3 as shown in FIGS.
Is provided with an air blow nozzle 5 attached to the outside of the cover 4 attached to the cover.

The position changing means 2 includes a left and right driving mechanism 6, a vertical driving mechanism 7, and a front and rear driving mechanism 8. The printing means 1 is moved in the left and right horizontal direction by a left and right driving mechanism 6, and the left and right driving mechanism 6 is moved up and down by an up and down driving mechanism 7, and the up and down driving mechanism 7 is moved in the front and rear horizontal direction by a front and rear driving mechanism 8. Each driving mechanism will be described in detail. As shown in FIGS. 6 and 7, the left and right driving mechanism 6 includes a horizontal moving body 9 that supports the substrate 3 of the printing means 1 at one end, and the horizontal moving body 9 includes a guide rod 10. A gantry 12 movably and horizontally movable via a rack gear 11, a pinion gear 13 supported by the gantry 12 and meshing with the rack gear 11, and a motor for rotating the pinion gear 13 in any forward or reverse direction 14. 1
5 is a cover attached to the gantry 12, and
And the printing means 1 at the home position enters as shown in FIG.

The vertical drive mechanism 7 includes a guide column 16, a vertical rotary screw shaft 17 supported on the guide column 16 so as to be able to rotate only, and a screw shaft fitted on the rotary screw shaft 17 and moving up and down on the guide column 16. And a motor 1 for driving the rotary screw shaft 17 to rotate in any direction in the forward and reverse directions.
The gantry 12 of the left and right drive mechanism 6 is supported by the lift 18 via a bracket 20.

The front-rear drive mechanism 8 includes a front-rear horizontal guide rail 21, a movable base 22 supported only by the guide rail 21 so as to be movable, and a cylinder unit 23 for moving the movable base 22 forward and backward. The movable table 22
The guide column 16 of the vertical drive mechanism 7 is attached via a bracket 24 to the lateral side of.

A bar-shaped workpiece cutting device to which the printing device having the above configuration is added will be described with reference to FIGS.
Numeral 5 denotes feeding means for transferring the bar-shaped work W in the longitudinal direction, a driving roller conveyor 26 for supporting and conveying the bar-shaped work W, and a feeding clamp 27 for clamping the bar-shaped work W and reciprocating a set stroke. It is composed of The feed clamp 27 includes a reciprocating table 29 supported by a guide rail 28 parallel to the length direction of the rod-shaped workpiece W, a clamp receiving plate 30 installed on the reciprocating table 29, and the receiving plate 30. And a pressing plate for clamping 32 which is moved toward and away by the cylinder unit 31.

Reference numeral 33 denotes a cutting means such as a band saw for cutting the rod-shaped workpiece W fed by the feeding means 25 at a cutting position CP. The main clamping means 34 for cutting is arranged adjacent to the upper side of the cutting position CP. This cutting main clamping means 34 is
Clamp receiving plate 36 installed on the
6 and a clamp pressing plate 38 which is moved toward and away from the cylinder unit 37 by a cylinder unit 37.

On the lower side of the cutting position CP, a cutting work C
A W discharging means 39 is provided. This discharging means 39
Is composed of a receiving table 40 and a discharge clamp 41 forming a discharge path of the cut work CW.
Is a guide rail 4 parallel to the discharge path of the cut work CW.
2 and a reciprocating carriage 43 supported by
A clamp receiving plate 44 installed on the
And a clamp pressing plate 46 which is moved toward and away from the cylinder 4 by a cylinder unit 45.

The printing device prints on the end surface WS of the bar-shaped work W supported on the feeding means 25 at the cutting position CP. The vertical movement mechanism 7 is arranged at the lateral side of the discharge path of the cut work CW such that the longitudinal movement direction of the vertical drive mechanism 7 by the longitudinal drive mechanism 8 is parallel to the length direction of the bar-shaped work W.

Drive roller conveyor 2 of feeding means 25
6, the bar-shaped workpiece W conveyed to the position where the leading end surface WS reaches the cutting position CP, or the bar-shaped workpiece W whose cutting end surface WS is at the design position CP by the previous cutting, is fed by the feeding clamp 27 to a predetermined length (cutting length). ) Is sent to the cutting work discharge path (the receiving table 40). That is, as shown by the imaginary line in FIG. 4, the clamp press platen 3 of the feed clamp 27 which is retracted by a predetermined distance (cut length).
2 by the cylinder unit 31
Side, the rod-shaped work W is clamped between the pressing plate 32 and the receiving plate 30, and in this state, the reciprocating slide 29 is advanced to the cutting position CP side to the home position shown by the solid line in FIG. Move. At this time, the driving roller conveyor 26 can also be driven.

When the bar-shaped work W has been fed by a predetermined length (cut length) as described above, the clamp pressing plate 38 of the main cutting means 34 is moved to the clamp receiving plate 36 side by the cylinder unit 37. Then, the rod-shaped work W is clamped between the pressing plate 38 and the receiving plate 36,
The rod-shaped workpiece W is cut by the cutting means 33 at the cutting position CP. The cut and separated work CW is clamped by a discharge clamp 41 on a receiving table 40 of the discharging means 39 as shown by a solid line in FIG. Discharge in the direction.
That is, the clamp pressing plate 46 of the discharge clamp 41 is moved to the clamp receiving plate 44 side by the cylinder unit 45, and the cut work CW on the receiving table 40 is moved to the pressing plate 4.
6 and the receiving board 44, and in this state, the reciprocating carriage 43 is moved forward to a discharge position indicated by a virtual line in FIG.

By repeating the above operation, the rod-shaped work W fed by the feeding means 25 can be cut by a predetermined length (cut length) and sequentially discharged as a cut work CW. After the cutting work CW is discharged from the cutting position CP by the discharge means 39, in a state where the remaining bar-shaped work W is clamped by the main cutting clamp means 34, the cutting position CP is cut.
Is performed on the rod-shaped workpiece end face WS.

That is, at the time of the cutting operation of the bar-shaped work W and the discharging operation of the cut work CW, the movable table 22 of the front-rear drive mechanism 8 supporting the printing means 1 via the left-right drive mechanism 6 and the up-down drive mechanism 7 As shown in FIG. 4, the cutting position C is set by the cylinder unit 23 of the front-rear drive mechanism 8.
The lifting platform 1 of the up-down drive mechanism 7 which is at the retreat limit position farthest from the P and supports the printing means 1 via the left-right drive mechanism 6
Reference numeral 8 denotes a horizontal drive for supporting the printing means 1 at the ascending / descending range of the vertical movement mechanism 7 as shown by a virtual line in FIG. The laterally moving body 9 of the mechanism 6 is at a retreat limit position farthest away from the bar-shaped work W at the cutting position CP as shown in FIGS. 1 and 6 by the rotation of the pinion gear 13 in the left and right drive mechanism 6.

When the discharge clamp 41 clamps and discharges the cut workpiece CW to the discharge position as shown by the imaginary line in FIG. 4, the movable mechanism 8 of the front-rear drive mechanism 8 is moved as shown by the solid line in FIG. The table 22 is moved forward by the cylinder unit 23 to the forward limit position, and then the vertical drive mechanism 7 is moved.
Is lowered by the rotation of the rotary screw shaft 17, and the printing means 1 is lowered to the printing level L shown in FIG. This printing level can be the same as the center level of the end face WS of the bar-shaped work W so that the printing length can be maximized. Therefore, in this case, the printing level varies depending on the diameter of the bar-shaped work W, and is indicated by a dotted line in FIG. As shown, in the case of a bar-shaped work W 'having a small diameter, the printing level L' also decreases, and conversely, in the case of a bar-shaped work having a large diameter, the printing level also increases.

Next, as shown in FIGS. 3, 5, and 7, the horizontal moving body 9 of the left and right driving mechanism 6 is moved forward by the rotation of the pinion gear 13 in the left and right driving mechanism 6. As a result, the leading end printing portion 1a of the printing means 1 moves horizontally along the rod-shaped workpiece end face WS with a predetermined printing distance from the rod-shaped workpiece end face WS at the cutting position CP. Tip printing section 1a of printing means 1
By operating the printing means 1 from the time when the printing start position PS shown in FIGS. 3 and 6 is reached, a predetermined character as shown by a rectangular frame in FIG. Column WL can be printed.

It should be noted that the moving speed of the printing means 1 by the left and right driving mechanism 6 can be made different before and after reaching the printing start position PS. FIG. 6 shows a case where the position of the bar-shaped workpiece W to be clamped by the main cutting clamp means 34 is determined by the receiving plate 36 and the support surface (the support surface of the drive roller conveyor 26) of the main cutting clamp means 34. As shown, regardless of the diameter of the rod-shaped workpiece W,
The printing start position PS in the left-right horizontal movement direction of the printing means 1 by the left-right driving mechanism 6 can be made constant.

In the case where cooling oil or the like that hinders printing remains on the rod-shaped workpiece end surface WS, when the printing means 1 is horizontally moved in the printing direction by the left and right drive mechanism 6 as described above, High-pressure air is discharged from the air blow nozzle 5, and the high-pressure air is discharged from the end surface W of the rod-shaped workpiece.
Injection is performed prior to printing at the printing location of S, and cooling oil and the like remaining on the rod-shaped workpiece end surface WS can be blown off and removed.

When the printing is completed, the printing means 1 is moved back and forth from the rod-shaped work end face WS to the lateral side by the left and right driving mechanism 6 and is raised to the upper limit position by the up and down driving mechanism 7. 4, the discharge clamp 41 is returned to the original position adjacent to the cutting position CP, and the rod-shaped workpiece W is fed in to perform the next cutting operation. be able to.

The printing means 1 is retreated laterally from the bar-shaped work end face WS by the left and right driving mechanism 6 and is raised to the upper limit position by the up and down driving mechanism 7, so that the printing means 1 is discharged as shown in FIG. If the printing means 1 can be made to stand by outside the reciprocating movement path of the clamp 41 and the cut work discharge path, the front-back movement of the printing means 1 by the front-rear drive mechanism 8 can be omitted. Further, the front-rear drive mechanism 8 can be eliminated. However,
Even in the above situation, by providing the front-rear drive mechanism 8 in parallel, the printing unit 1 is not obstructed during maintenance work of the cutting unit 33 and the like.
Can be retracted from the cutting position CP to the retreat limit position in the cutting workpiece discharge direction as shown in FIG.

In the above-described embodiment, the printing operation is performed when the printing unit 1 is moved in the horizontal direction by the left and right driving mechanism 6. However, the printing operation is performed when the printing unit 1 is moved in the vertical direction by the vertical driving mechanism 7. It is also possible to do. In either case, the horizontal movement of the printing means 1 by the left and right driving mechanism 6 and the printing means 1 by the
May be performed first.

[0026]

As described above, according to the apparatus for printing a cut work of the present invention, the cutting means is arranged such that the rod-shaped work is fed by a predetermined length in the length direction from the upper side of the cutting position. A rod-shaped workpiece cutting device that clamps by a clamping means disposed on the upstream side, cuts the bar-shaped workpiece at the cutting position, and discharges the separated workpiece to the downstream side of the cutting position by a discharging unit. In a state where the cut work is discharged by the discharge means, the printing means disposed outside the discharge path of the cut work on the lower side of the cutting position is changed to one of the vertical drive mechanism and the left and right drive mechanism of the position changing means or By both, it is moved to the printing start position on the bar-shaped work end face located at the cutting position,
Then, necessary information can be printed on the end face of the bar-shaped work located at the cutting position while the printing means is moved in the printing direction by one of the vertical drive mechanism and the left / right drive mechanism of the position changing means.

That is, since it is possible to automatically print on the end face of the bar-shaped work clamped by the clamping means before being cut and separated at the cutting position, the cut and separated work is conveyed to a printing work place. No preparation work for printing, such as changing the printing direction or the direction suitable for printing, is required at all, so that the cost can be significantly reduced and the cycle time from cutting to completion of printing can be significantly reduced.

Further, when printing is performed on the end face of the bar-shaped work fed by a predetermined length (cut length) from the cutting position by the feeding means, when the cut length changes, the position of the printing means is also changed to the length of the bar-shaped work. However, in the apparatus of the present invention, the position immediately before printing of the printing means can always be constant with respect to the cutting position regardless of the cutting length of the bar-shaped work, so that printing can be performed with high accuracy. And the position change control of the printing means can be easily performed.

According to the configuration of claim 2, the position changing means includes a front-rear drive mechanism for reciprocating the printing means in the longitudinal direction of the rod-shaped work. For example, since the printing means can be sufficiently separated from the cutting position in the rod-shaped workpiece discharging direction, maintenance work of the cutting means can be easily performed.

Further, the printing level of the printing means is adjusted by the up-down driving mechanism, and the printing means is horizontally printed on the end face of the bar-shaped work located at the cutting position by the horizontal movement of the printing means by the left-right driving mechanism. According to the configuration of the third aspect, as compared with the case where printing is performed by the vertical movement of the printing means by the vertical clamp mechanism, the entire area in the diameter direction of the end surface of the rod-shaped work is not hindered by the support means for the rod-shaped work. It can be used for printing.

Further, according to the configuration of claim 4, cooling air or the like is used at the time of cutting, wherein air is jetted from an air blow nozzle prior to printing at a printing position on the end surface of the rod-shaped work. In such a case, even in a situation where the cooling oil or the like remains at the printing position on the end face of the rod-shaped work and good printing cannot be performed, printing on the end face of the rod-shaped work by the high-pressure air jetted from the air blow nozzle is performed. The cooling oil and the like remaining at the location can be blown off and removed, so that printing can be performed satisfactorily in any situation.

[Brief description of the drawings]

FIG. 1 is a front view showing a printing apparatus and a cut work discharging unit.

FIG. 2 is a side view showing a printing apparatus and an end of a bar-shaped work.

FIG. 3 is a plan view showing a printing device and an end of a bar-shaped work.

FIG. 4 is a schematic plan view showing the entire cutting device to which a printing device is added.

FIG. 5 is a schematic plan view showing a state where the printing apparatus of FIG. 4 is in a printing state.

FIG. 6 is a front view illustrating a relationship between a moving path of a printing unit and an end surface of a bar-shaped work.

FIG. 7 is a plan view of the same.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 printing means 1a tip printing section 2 position changing means 5 air blow nozzle 6 left and right driving mechanism 7 up and down driving mechanism 8 front and rear driving mechanism 9 horizontal moving body 10 guide rod 11 rack gear 13 pinion gear 14 left and right driving motor 16 guide post 17 rotating screw shaft REFERENCE SIGNS LIST 18 lifting table 19 lifting drive motor 21 guide rail 22 movable table 23 front and rear drive cylinder unit 25 rod-shaped work feeding means 26 drive roller conveyor 27 feeding clamp 28 guide rail 33 cutting means 34 cutting main clamp means 39 discharging means 40 receiving stand 41 Discharge clamp 42 Guide rail CP Cutting position CW Cutting work L Print level W Rod work WS Rod work end face WL Print character string

──────────────────────────────────────────────────続 き Continuation of front page (58) Fields investigated (Int. Cl. ⁷ , DB name) B23D 33/00 B23D 59/00 B23D 23/00

Claims (4)

(57) [Claims] In a state in which a rod-shaped work is fed by a predetermined length in a length direction by a feeding means from an upper side of a cutting position, the rod-shaped work is clamped by a clamping means disposed on an upper side of the cutting position. A printing device that is added to a rod-shaped work cutting device that cuts at the cutting position and discharges the separated cut work to the lower side of the cutting position by a discharging device, comprising a printing device and a position changing device. The printing means is for printing on the end face of the rod-shaped work located at the cutting position, and is disposed outside the cutting work discharge path on the lower side of the cutting position. A cutting work printing apparatus, comprising: a vertical drive mechanism for moving up and down; and a left and right drive mechanism for moving the printing unit in a horizontal direction that is perpendicular to the length direction of the rod-shaped work. 2. A cutting work printing apparatus according to claim 1, wherein said position changing means includes a front-rear drive mechanism for reciprocating the printing means in a length direction of the rod-shaped work. 3. The printing means, wherein a printing level is adjusted by the up-down driving mechanism, and printing is performed in a horizontal direction on an end surface of the bar-shaped work located at the cutting position by horizontal movement by the left-right driving mechanism. 2. A printing device for cutting workpieces according to claim 1. 4. The printing means includes an air blow nozzle disposed on a moving direction side during printing with respect to a leading end printing portion, and air is blown from the nozzle at a printing position on an end surface of the rod-shaped work prior to printing. Claim 1 which was made to be injected
3. The printing device for cutting work according to any one of 3.