JP2553047Y2 - Impact hammer equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cylinder actuator having a lock mechanism capable of holding a cylinder rod at a retracted position, a pressure circuit for operating the cylinder actuator, and the cylinder described above. And a hammer head operated by an actuator.

[Prior Art] A work W of an aluminum cast product shown in FIG. 6 is taken out of a mold as shown in FIG.
As shown in FIG. 6B, the product part Wa is obtained by cutting off the left and right flies Wb and the sprue Wc and cutting and removing the front flies Wd.

In order to remove surplus materials such as the above-mentioned fried Wb and gate Wc, the 7th
As shown in the figure, there is a method in which a worker beats a surplus portion of the work W placed on the fixed base G using a hammer H.
In this case, work efficiency is extremely poor.

Therefore, in a device A for removing surplus material from a cast product shown in FIG. The surplus materials Wb and Wc of the work W are broken off by the downward movement of the punches D and D.

[Problem to be Solved by the Invention] In the apparatus having the above configuration, the punch (hammer head) that comes into contact with the surplus material of the work W is gently lowered by the cylinder actuator, so that a static load is applied to the surplus material. As a result, the surplus material cannot be cut off from the product part Wa and sometimes remains.

The present invention has been made in view of the above circumstances, and has as its object to provide a striking hammer device that can apply a large impact force to a work and reliably process the work.

[Means for Solving the Problems] Accordingly, in the present invention, a hammer assembly having a hammer arm swingably supported by a base supporting a cylinder actuator and a hammer head provided at the tip of the hammer arm is provided. Based on the operation of the cylinder actuator, which is connected to the distal end of the cylinder rod in the cylinder actuator and has a lock mechanism capable of holding the cylinder rod in the retracted position, the hammer assembly is swung in such a manner that the hammer head is lowered and lowered. You have achieved your goal.

[Operation] According to the above configuration, the hammer head operates at a high head speed by holding the cylinder rod at the retracted position by the lock mechanism, increasing the operating pressure of the head side pressure chamber, and then releasing the lock mechanism. I do.

Hereinafter, a specific configuration of the present invention will be described in detail with reference to the drawings illustrating an embodiment.

Fig. 1 to Fig. 5 show the impact hammer of the present invention,
An example in which the present invention is applied to a device for removing surplus material from a cast product will be described.

As shown in FIGS. 4 and 5, the excess material removing device 1 includes a pair of guide posts 12 erected on a fixed base 11, a ram 13 guided up and down by the guide posts 12, and a ram 13
And a cylinder actuator 14 (FIG. 4) for operating the actuator 13.

The ram 13 includes a pair of clampers 5, as shown in FIG.
The work supports 5 are provided on the fixed base 11 at positions corresponding to the clampers 5.

A circular saw 17 supported by a swingable arm 15 and vertically moved by an actuator 16 is disposed in front of the ram 13 (to the right in FIG. 4).

Further, a striking hammer device 20 is installed behind the clamper 5 and the work support base 6 (to the left in FIG. 4).

This striking hammer device 20, as shown in FIG.
A cylinder actuator 2 and a hammer assembly 4 are provided.

The cylinder actuator 2 includes a cylinder body
2C and a cylinder rod 2R, and a lock mechanism 3 for holding the cylinder rod 2R at the retracted position.

The lock mechanism 3 is configured by accommodating a plurality of washers 3w, 3w,... Loosely fitted to a cylinder rod 2R in a lock chamber 2Cr formed in a cylinder body 2C, and each washer 3w is a part of the outer periphery. Are supported by the lock chamber 2Cr and operate in a known manner to lock the cylinder rod 2R at the retracted position.

As shown in FIG. 2, a passage 7Hp, a passage 7Rp, and a passage 3Rp are connected to the head-side pressure chamber 2Ch, the rod-side pressure chamber 2Ci, and the lock chamber 2Cr of the cylinder actuator 2, respectively. The passage 7Hp and the passage 7Rp are connected to the air compressor 7C via the switching valve 7R via the switching valve 7R. The passage 7Rp is provided with a quick exhaust valve 7E and a pressure regulating valve 7G. Note that the above-described pressure circuit is a general circuit for operating a cylinder actuator having a lock mechanism, and a detailed description thereof will be omitted.

On the other hand, as shown in FIGS. 1 and 4, the cylinder actuator 2 has a head-side end of a cylinder body 2C supported by a shaft.
While being pin-connected to the base 2D by 2p, a hammer assembly 4 is supported at the tip of the cylinder rod 2R via a connecting member 2Ru.

The hammer assembly 4 includes a connecting arm 4r pin-connected to the connecting member 2Ru, and a hub 4j connected to the connecting arm 4r.
Has a pair of hammer arms 4a, 4a formed integrally with each other, and at the tip of these hammer arms 4a, 4a,
The hammer heads 4H, 4H are fixed respectively.

Further, the hammer assembly 4 is swingably supported at an end of a base 2D via a support shaft 4p. By extending and retracting a cylinder rod 2R of the cylinder actuator 2, the hammer head 4H is connected to a connecting arm. It moves substantially up and down via the 4r and the hammer arm 4a.

The operation of the surplus material removing device 1 will be described below.

First, after the work W is placed on each of the work supports 6, 6, the cylinder actuator 14 is extended to lower the ram 13, and the work W is pressed and fixed to the work support 6 by the clamper 5.

Next, air is supplied to the lock chamber 2Cr of the lock mechanism 3 to lock the cylinder rod 2R at the retracted position, and in this state, air is supplied to the head-side pressure chamber of the cylinder actuator 2.

One to two seconds have elapsed since the supply of air to the head side pressure chamber was started, and when the internal pressure of the head side pressure chamber was sufficiently increased, the air in the lock chamber 2Cr was released to lock the cylinder rod 2R. release.

As a result, the cylinder rod 2R is vigorously extended by the high pressure in the head side pressure chamber, and the hammer head 4H of the hammer assembly 4 is lowered at high speed.

At this time, the air in the rod-side pressure chamber in the cylinder actuator 2 is smoothly discharged through the rapid exhaust valve 7E, so that the cylinder rod 2R extends very quickly, and the head speed of the hammer head 4H is also extremely high. It will be.

When the hammer head 4H is vigorously lowered, the lift Wb and the gate Wc of each work W are connected to the hammer head 4H.
It is surely cut off by 4H, 4H.

Thereafter, air is supplied to the rod-side pressure chamber of the cylinder actuator 2 to retract the cylinder rod 2R, move the hammer head 4H upward, and return to the initial position.

After the lift Wb and the gate Wc of the work W are cut off, the circular saw 17 is lowered to remove the front lift Wd of each work W fixed to the left and right work supports 6,6. Cut at the same time.

After the front lift Wd is cut off from the work W, the ram 13 is moved upward to separate the crumber 5 from the product unit Wa, so that the product unit Wa can be taken out of the apparatus 1.

It is needless to say that the impact hammer device according to the present invention can be widely applied not only to the device for removing surplus material of a cast product shown in the embodiment but also to various processing devices.

[Effects of the Invention] As described above in detail, in the impact hammer device according to the present invention, a hammer arm swingably supported by a base supporting a cylinder actuator, and a hammer head provided at a tip of the hammer arm. Since the hammer assembly having the above structure is connected to the distal end of the cylinder rod in the cylinder actuator, the cylinder rod is held in the retracted position by the lock mechanism, the operating pressure of the head side pressure chamber is increased, and then the lock mechanism is released. Accordingly, the hammer head can be operated at a high head speed, so that a large impact force can be applied to the work to reliably process the work.

In addition, since a sufficient impact force to the work is generated even if the mass of the hammer head is small due to the increase in the head speed, the hammer head can be downsized and the whole apparatus can be downsized.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a main part of the impact hammer device according to the present invention, which is cut away, FIG. 2 is a pressure circuit diagram of the impact hammer device according to the present invention, and FIGS. FIGS. 4 and 5 are conceptual side views showing an operation mode of a lock mechanism in a cylinder actuator, FIGS. 4 and 5 are cross-sectional side views and a front view of a surplus material removing device, showing an installation mode of a striking hammer device, FIGS. b) is a general perspective view showing the work before the removal of the surplus material and the work after the removal of the surplus material, FIG. 7 is a conceptual diagram showing a mode of manually removing the surplus material of the casting, and FIG. It is a key map showing the surplus material removal device of goods. 1 ... surplus material removing device, 20 ... hammering device, 2 ...
Cylinder actuator, 2R …… Cylinder rod, 3…
… Lock mechanism, 4… hammer assembly, 4a… hammer arm, 4H… hammer head.

Claims (1)

(57) [Scope of request for utility model registration] 1. A cylinder actuator having a lock mechanism capable of holding a cylinder rod at a retracted position, a pressure circuit for operating the cylinder actuator, and a hammer head operated by the cylinder actuator. A striking hammer device, comprising: a hammer assembly having a hammer arm swingably supported by a base supporting the cylinder actuator; and a hammer head provided at a tip of the hammer arm. A hammer assembly connected to the tip of the hammer assembly and swinging the hammer assembly in a manner in which the hammer head is lowered based on the operation of the cylinder actuator.