JP2002102985A - Spray blow device for forging press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the dangling of flexible tube for a lubricant in the vicinity of a forging press, and contrive to make an arm lightweight. SOLUTION: The spray blow device moves a spray nozzle 10 spraying the lubricant onto the surface of upper and lower dies Q2, Q1 on the forging press A through an arm 34. A lubricant pipeline 39 to the nozzle 10 is guided to the rear end while being fit to the arm 34, and jointed to a lubricant supply unit. In this way, a flexible tube in the vicinity of the nozzle 10 is eliminated, and a space between the forging press A and the spray blow device 30 does not become narrow thereby to enhance the workability for the changing of the die Q, etc., since the flexible tube 40 at the rear end is generally made to move in the position provided with a space, the action thereof is smooth, and causes less damage. The arm 34 is supported by a ball screw 33 for its moving and a guide shaft, and made slender so as to cope with the highspeed performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spray blow apparatus for applying a lubricant to a die of a forging press.

[0002]

2. Description of the Related Art For example, a forging press A with a transfer device will be described with reference to FIGS.
₁ (Q ₁₁ , Q ₁₂ , Q ₁₃ , Q ₁₄ ) on each press position P ₁ ,
After defining P ₂ , P ₃ , and P ₄ , the workpiece a is sent to the mounting plate 1 by the shooter S of the supply device, and the workpiece a is sent out to the front position P ₀ by the pusher 2, and then transferred. By repeating the operation of gripping (clipping) and the operation of separating the workpiece a with the fingers of the beam that moves up, down, left and right and back and forth of an apparatus (not shown),
To each press position P ₁ ...
The upper die _{Q 2 (Q 21, Q 22} , Q 23, Q 24) by lifting,
Press working is performed (FIG. 9a ₁ → a ₂ → a ₃ → a ₄ ). From the press position P ₄ is pressed completed article a ₄ carried away (paid out). The carry-out is transferred to a conveyor by a suitable means and moved to a required position. In the figure,
F is a press frame, and 3 is an upper and lower mold holder.

In this forging press A, the workpiece a
(A ₁ ...) Are protruded by the upper and lower knockout pins 5 and peeled from the dies Q ₁ and Q _2. Molds Q ₁ , Q
_A lubricant is applied to the surface of ₂ , and compressed air is blown (air blown). The application of the lubricant and the air blow, that is, the spray blow, are performed by appropriately selecting the lubricant, the compressed air, and the mixture thereof (these are appropriately referred to as lubricants or the like in the present application), and the dies Q ₁ , Q _2.
It is very important for the processing accuracy and automatic operation to be sprayed on the surface of the surface and to make it uniform over the entire surface.

As the spray blow device, there is a device in which a spray blow nozzle is directly mounted on a forging press A. However, in this device, a space for mounting the spray blow nozzle is limited, and dies Q ₁ and Q _{2 are used.} , The spray blow nozzles and their connecting pipes must be removed together with the holders 3 and 3, and the operation is complicated. For this reason, today, forging press A
In addition, a means for performing a spray blow by separately providing a spray blow device is often employed.

As another spray blow device, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 9-10881. As shown in FIG. 10, this device is installed on the rear surface of a forging press A, and an arm 7 having a spray blow nozzle 10 at the tip is mounted on a main body frame 6 of the forging press A via a ball bush 7a. The upper and lower molds Q ₁ and Q ₂ are provided so as to be able to advance and retreat, and the slider 8 of the arm 7 is screwed to the ball screw shaft 9 and the slider 8
Are slidably supported by the linear guides 8a on both sides. In the drawing, reference numeral 4 denotes a slide on which the upper mold holder 3 is detachably mounted and which moves up and down the holder 3 (upper mold Q ₂ ).

In this spray blow device, the servo motor 9a is rotated forward and reverse by the controller C,
The arm 7 advances and retreats between the solid line and the chain line, and sprays a lubricant c from the spray blow nozzle 10 onto the surfaces of the dies Q ₁ and Q ₂ to apply the lubricant and air blow.

[0007]

SUMMARY OF THE INVENTION In the above conventional spray blow apparatus, the lubricant spray blow nozzle 10 is used.
As shown in FIG. 10, the flexible tube T from the lubricant supply unit U is guided to the base of the spray blow nozzle 10. Generally, the space between the forging press A and the spray blower is narrow, and if the flexible tube T moves in the space, the possibility of damaging the flexible tube T is high. In addition, the presence of the flexible tube T in a narrow space makes it difficult to replace and maintain the molds Q ₁ and Q ₂ .

Further, as shown in FIG. 11, there is a type in which the arm 7 is extended rearward, the flexible tube T from the spray blow nozzle 10 is locked at the rear end of the arm 7, and then guided to the unit U. However, in this technique, the flexible tube T hangs down, is easily entangled, and is easily damaged.

Further, both of the devices shown in FIGS.
Since one end of the flexible tube T is supported by the base of the spray blow nozzle 10, the load (eccentric load) applied to the nozzle 10 becomes large. For this reason, a high rigidity is required for the connecting portion between the spray blow nozzle 10 and the arm 7 and the arm 7, and it is inevitable to increase the size.
The cost is also high. Today, the speed of the forging press A has been increased, and for that purpose, it is desired to reduce the weight of the connecting portion of the spray blow nozzle 10 and the arm 7 and reduce the resistance during movement.

Further, the conventional arm 7 is supported for movement by two parallel linear guides 8 a, and the linear guides 8 a are fixed to a plane processing portion of the frame 6. On the other hand, the arm 7 and the ball screw shaft 9 are supported by bearings of the frame 6, and the bearings are fixed to the drilled portions. At this time, since the plane processing and the hole processing are performed by different processing machines, the reliability of the precision of the two is low and the movement resistance is high due to the change of the setup.

Further, a bending stress acts on the arm 7 via the slider 8 by the rotation of the ball screw shaft 9. At this time,
In the apparatus shown in FIGS. 10 and 11, since the linear guide 8 a does not have a structure that resists the bending stress, most of the bending stress is supported by the arm 7. For this reason, the arm 7 has to be thickened, and is heavy and has a large movement resistance.

The first object of the present invention is to prevent the flexible tube T from hanging down from the spray blow nozzle 10 under the above circumstances, and to provide an arm and its support and support.
A second object is to reduce the weight of the drive unit.

[0013]

In order to solve the above-mentioned first problem, according to the present invention, a lubricant pipe to a spray blow nozzle is fixed to an arm and guided to the rear end of the arm.
From the rear end, a flexible tube was connected to the lubricant supply unit.

[0014] With this configuration, it is possible to eliminate the hanging and moving flexible tube which was conventionally located near the spray blow nozzle. For this reason, the space between the forging press and the spray blower is not narrowed, and the workability such as mold replacement is improved. On the other hand, the piping along the arm moves with the movement of the arm because it is fixed to the arm,
The flexible tube at the rear end generally hangs down at a location where there is space, so that the movement is smooth and the damage is small.

As a means for solving the second problem, in the present invention, an arm is guided by a shaft, and the arm is connected to a guide shaft via a slider and a sliding bearing. In the case of a shaft, the support of the shaft on the apparatus body frame also serves as a bearing, and the fixing portion is formed with a hole as in the case of the arm, so that the reliability of accuracy is improved. Further, if the arm is connected to the guide shaft via the slider and the sliding bearing, the connecting portion has a fitting structure and sufficiently resists the bending stress. For this reason, the load against the bending stress of the arm is reduced, and a thinner one can be adopted as compared with the conventional one, so that the weight can be reduced. In addition, the moving force and the resistance can be reduced due to the weight reduction.

As another means, a ball screw shaft and a guide parallel to the arm are provided on the apparatus main body frame so that the ball screw shaft is located at an intermediate position between the arm and the guide. A structure that supports bending stress, for example, a structure in which the shaft and the sliding bearing are fitted, and a structure in which the linear guide is fitted and does not come off is used. In this case, the arm and the guide jointly support the bending stress on both sides of the ball screw shaft, so that a thinner arm can be used as compared with the conventional arm. The thinning can reduce the weight, and the reduction in the weight also reduces the moving force and the resistance.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment for solving the above-mentioned first problem of the present invention, a spray blow nozzle for injecting a necessary lubricant or the like to the surfaces of an upper die and a lower die of a forging press is provided. In a spray blow device that moves toward a forging press, an arm having the spray blow nozzle at the tip is provided on the device body frame so as to be able to advance and retreat between the upper and lower molds, and from the tip of the arm to the rear end. A configuration is adopted in which a pipe for a lubricant or the like is provided to the spray blow nozzle over the same, and a flexible tube for feeding a lubricant or the like from a lubricant supply unit is connected to the rear end of the pipe.

If a ball screw connection driven by a servo motor is employed for the movement of the arm, the control is easy and the movement accuracy is high. In addition, a guide may be provided on the arm, and when the guide is a shaft, a ball bush that slides smoothly may be used as a bearing for connecting the guide to the arm.

According to an embodiment for solving the second problem, a ball screw shaft and a guide shaft parallel to the arm are provided on a frame of the apparatus main body, and a slider fixed to the arm is connected to the ball via a ball nut. The slide is moved on the ball screw shaft and the guide shaft by rotating the ball screw shaft by means of a servomotor by screwing the screw shaft together with the guide shaft via a sliding bearing, and A configuration in which the arm moves forward and backward between the upper and lower molds may be employed.

Further, a ball screw shaft and a guide parallel to the arm are provided on the apparatus main body frame such that the ball screw shaft is located between the arm and the guide, and a slider fixed to the arm is connected via a ball nut. And the slider is slidably fitted on the guide while being screwed to the ball screw shaft, and the ball screw shaft is rotated by a servomotor, so that the slider is moved on the ball screw shaft and the guide, and the arm is moved. Is configured to move forward and backward between the upper and lower molds. At this time, as the guide, a structure that supports the bending stress as described above, for example, a structure in which the shaft and the sliding bearing are fitted, and a structure in which the linear guide is fitted and does not come off is used.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A spray blow apparatus 30 of this embodiment is installed on a rear side of a forging press A shown in FIG. 8, and is mounted on a carriage 22 movable on rails 21 as shown in FIG. Have been. The reason why the work is movable is that the mold (Q) and its holders (3, 3) are retreated backward when the work (billet) a is changed or the like, so that the work is not disturbed. The cart 22 has wheels 22a
, And after being set to a required distance from the forging press A, the fixing device is fixed by the stopper 23. The interval is set by positioning the arm mounting flange (base frame 12) of the spray blow nozzle 10.

When the height of the workpiece a changes greatly, as in the case of vertical to horizontal or vice versa, the lifting stroke of the transfer device changes, and when the position of the beam changes, the spray blow nozzle 10 May interfere. At that time, spray blow nozzle 1
0 and remove another suitable spray blow nozzle 1
Replace with 0. Alternatively, the position of the spray blow nozzle 10 is adjusted by making the frame 31 placed on the carriage 22 vertically movable.

The ball screw shaft 33 and the arm are provided between the bearing plates 32, 32 around the box-shaped main body frame 31 of the spray blow device 30 via a ball screw bearing, an arm bearing (ball bush) and a guide bearing (ball bush). 34 and a guide shaft 35 are provided in parallel on the same vertical plane. A downward slider 36 is fixed to the arm 34, and the slider 36 is attached to the ball screw shaft 33.
The arm 34 is movably fitted to the guide shaft 35 via a ball bush, and when the ball screw shaft 33 is rotated by the servo motor 37, the arm 34 is Move back and forth. The upper surface of the frame 31 is covered with a dust cover.

At the front and rear ends of the arm 34, a pipe 39 of a lubricant or the like is provided via a fixed base 39 '. The number of the pipes 39 is arbitrary. The rear end of each pipe 39 is connected to a lubricant supply unit (not shown) by a flexible tube 40, and the front end of each pipe 39 is also connected to the spray blow nozzle 1 by a flexible tube 41.
0 nozzle tubes 11 respectively. In the figure, 4
Reference numeral 2 denotes a bellows for covering the projecting end of the arm 34.

The spray blow nozzle 10 comprises a plurality of nozzle tubes 11 and a base frame (attachment) 12 for supporting the tubes 11, and is attached by fixing the base frame 12 to the arm 34. As shown in FIG.
a through the arm 34, and the supporting portion 1
The arm 34 is screwed with the bolt 12b threaded through 2a.
The base frame 12 is fixed to the base frame 12. Nozzle tube 11 each mold _{Q 11, Q 12, Q 13} , Q 14, Q 21, Q 22, Q 23, Q 24
In this manner, the coating amount can be made uniform and the speed of the forging press A can be increased.

As shown in FIG. 3B, the nozzle tubes 11 are detachably mounted on the front plate of the base frame 12 in a vertically staggered manner, bent forward, and arranged in a line. The nozzle tube 11 is mounted on a stage (upper and lower molds Q).
In addition to the number of nozzles, the number of nozzles corresponding to each stage and the number and position of the ejection ports 13 are appropriately selected. At this time, not only the application of the lubricant but also the air blow is performed. The nozzle tube 11 is divided into two parts via a block 11a in the middle, and is disassembled and repaired / replaced via the block 11a. Spout 13
Can be provided on only one of the upper and lower surfaces as shown in FIG. 4, or can be provided on both the upper and lower surfaces as shown in FIG.

The structure of the nozzle tube 11 is shown in FIG.
As shown in FIG. 2, the jet port 13 can be formed in one pipe, or the jet port components can be connected as shown in FIG.
As shown in FIG. 6, the jet part is a tubular part main body 1.
4 and a ball nozzle 1 is formed in the vertical hole 15.
6 is held by a coil spring 16a, and a plug 17 is screwed and stopped. As shown in FIG. 7, the required number is connected by a nipple 18 and the nozzle tube 11 having a required number of ejection ports 13 is provided. And The tip of the nozzle tube 11 is closed by screwing a stopper 19.

This embodiment has the above configuration.
The operation will be described. This device 30 is shown in FIGS.
It corresponds to four stages and has a transfer
Heating furnace (induction)
Material (billette) heated by the heater
a is in the standby position (front
Position) P₀Supplied to This position P₀From troff
1st stage when the device holds the billet (work) a
(P₁, Crushing process). Then, upper mold Q_Two
Descends and performs forging, and works a (a₁……)
It is sent and molded (Fig. 9 (a) → (b) →
(C) → (d)). Each stage P₁~ P _FourLubrication every time
An agent or the like is ejected from the ejection port 13.

[0029] That is, when the upper die Q ₂ turns on the rise,
The transfer device is activated by the signal and billet a
(A ₁ ...), The servo motor 37 of the device 30 is activated by a signal of moving to the next step while ascending (lifting), the spray blow nozzle 10 moves forward, and the lubricant is provided just before the forward end. The supply opening / closing and air opening / closing solenoid valves are activated,
Lubricant and air are injected. At the forward end, it turns back,
Excitation of the solenoid valve is interrupted by a signal during retreat, and injection is stopped. At this time, an electromagnetic valve for air blow, a solenoid valve for lubricant, and a solenoid valve for lubricant spray blow are arranged for each nozzle pipe 11 of each stage so that the optimal timing can be selected. The start and stop can be arbitrarily adjusted by electric control.

For example, in this embodiment, the first stage P
_One nozzle tube 11 is a set of five, two lubrications for the lower die Q1, _one lubrication for the upper die Q2, and _two air blows.
The book is used for upper and lower molds Q ₁ and Q ₂ . This stage P
₁ has a lot of air blow because there are many scales.

The nozzle tube 11 of the second stage (P ₂ , rough finishing process) is a set of four nozzle tubes, two lubrications for the lower die Q ₁ , two lubrications for the upper die Q ₂ , and air blow. I haven't. Since the removal of the scale in the first stage P ₁ is because does not require the air blow.

The third stage (P ₃ , molding step) has six spray blow nozzles, two lubrications for the lower mold Q ₁ , two lubrications for the upper mold Q ₂ , and two air blows for the air blow. 2
The book is used for upper and lower molds Q ₁ and Q ₂ . This stage P
_3, a work a ₃ Lubricate so as not to fuse to the mold Q, and, as dents on the work surface does not occur,
The scale is blown off by air blow.

The nozzle tube 11 of the fourth stage (P ₄ , molding completion process) is a set of six nozzle tubes, two lubrications for the lower die Q ₁ , two lubrications for the upper die Q ₂ , and air blow. Are used for upper and lower molds Q ₁ and Q ₂ . This stage P
_4, and the mold Q as the workpiece a ₄ are not fused, skip the scale by air blow, dents are to avoid generating particular workpiece a ₄ surface.

Since the third and fourth stages P ₃ and P ₄ are molding steps, the purpose of cooling is increased because the temperature rise of the mold Q affects the product. Further, the nozzle pipes 11 of the respective stages P ₁ ... Are merely examples, and the optimal lubrication may be selected in combination.

In this embodiment, since the lubrication pipes 39 are installed in parallel on the upper part of the frame 31, the pipes 39
When inconvenience such as clogging occurs, maintenance such as replacement is easy. In addition, if the pipe 39 is incorporated in the arm 34, the size can be reduced, and this configuration is effective when the number of the pipes 39 is small.

[0036]

As described above, according to the present invention, the flexible tube for feeding the lubricant or the like is prevented from sagging in the vicinity of the forging press machine, so that the workability such as mold replacement is improved.

Further, since the weight of the arm having the spray blow nozzle is reduced, it is possible to sufficiently cope with an increase in the speed of the forging press.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment.

FIG. 2 shows a spray blow nozzle portion of the embodiment;
(A) is a plan view, (b) is a right side view of (a).

FIG. 3A is a plan view of a spray blow nozzle portion of the embodiment, and FIG. 3B is a cross-sectional view taken along line AA of FIG.

FIG. 4 is a partially cut front view of the spray blow nozzle portion of the embodiment.

FIGS. 5A and 5B are partially cut front views showing examples of nozzle tubes of a spray blow nozzle.

6A and 6B show parts of a spray blow nozzle, wherein FIG. 6A is a plan view and FIG.

FIG. 7 is a cut front view of a spray blow nozzle using the same part.

FIG. 8 is a schematic diagram of a forging press machine.

FIG. 9 is an explanatory diagram of a forging process.

FIG. 10 is a schematic diagram of a conventional example.

FIG. 11 is another schematic view of a conventional example.

[Explanation of symbols]

A forging press Q mold _{Q 1, Q 11, Q 12} , Q 13, Q 14 lower die _{Q 2, Q 21, Q 22} , Q 23, Q 24 lower die T lubricant flexible tube U lubricant Supply unit 10 Spray blow nozzle 11 Nozzle tube 12 Spray blow nozzle base frame 13 Spray port (nozzle) 22 Moving carriage 30 Spray blow device 31 Spray blow device body frame 33 Ball screw shaft 34 Arm for spray blow nozzle 35 Guide shaft 36 Slider 37 Servo motor 39 Lubrication pipe 40, 41 Flexible tube for lubricant

Claims (3)

[Claims] [Claim 1] upper die forging press machine A Q ₂ and the lower die Q
_In a spray blow device 30 for moving a spray blow nozzle 10 for spraying a necessary lubricant or the like to the surface of the device ₁ toward the forging press A, an arm having the spray blow nozzle 10 at a tip thereof on a device body frame 31 34 is the upper and lower molds Q ₁ , Q
A pipe 39 for lubricant or the like to the spray blow nozzle 10 is fixedly provided on the arm 34 from the front end to the rear end of the arm 34 so as to be able to move forward and backward between the _two. Flexible tube 40 for feeding lubricant and the like from lubricant supply unit U
A spray blow device of a forging press machine, characterized in that the device is connected. 2. The apparatus main body frame 31 includes the arm
Ball shaft 33 and guide shaft 35 parallel to the
And a slider 36 fixed to the arm 34 is
When screwed into the ball screw shaft 33 via a nut
Both are fitted on the guide shaft 35 via sliding bearings
Then, the ball screw shaft 3 is
3 by rotating the slider 36
On the screw shaft 33 and the guide shaft 35.
And the upper and lower molds Q ₁, Q_TwoIn the middle
2. The device according to claim 1, wherein the device is configured to advance and retreat.
Spray blow device for forging press. 3. A ball screw shaft 33 and a guide parallel to the arm 34 are provided on the apparatus main body frame 31 so that the ball screw shaft 33 is located between the arm 34 and the guide, and is fixed to the arm 34. The slider 36 is screwed onto the ball screw shaft 33 via a ball nut and slidably fitted on the guide, and the ball screw shaft 33 is rotated by a servo motor 37, whereby the slider 36 is The arm 34 is moved on the ball screw shaft 33 and the guide, and the upper and lower molds Q are moved.
_1, spray blowing device forging press according to claim 1 or 2, characterized in that so as to advance and retreat toward between Q _2.