JPS6145945Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an upsetter, and in particular, in an upsetter that also obtains the necessary mold closing force by stretching a pull rod, the pivot shaft of the pull rod is attached so as to be movable and fixed in the direction of the punch axis. The main purpose is to facilitate the replacement and maintenance of dies, punches, etc., and the transportation of materials and forged products.

For upsetting pipes and other materials, there are two types: vertical upsetters, which have a vertically split mold, and horizontal upsetters, which have horizontally split molds. It is known that assembly and disassembly of the like is advantageous.

In particular, in the case of the upsetter shown in Figs. 1 and 2, the mold closing force is applied through the stretching of the pull rod, and the pull rod is performed via the swing arm. This is an advantage over those who do not have it.

That is, in FIGS. 1 and 2, 1 is a bed,
Reference numeral 2 denotes a grippock, and both 1 and 2 are connected at one end through a shaft 3 and are rotatable and face each other vertically, and molds 4 and 5 are respectively provided at opposite ends of the other end, and a drive device A punch 8 is provided on a slide 7 which can be reciprocated by means of a slide 6, and the punch 8 can be inserted into and removed from the molds 4 and 5.

In order to obtain the necessary closing force for the molds 4, 5, a pair of pull rods 9, 9 are provided on both sides of the mold, and the upper ends of the pull rods 9, 9 are pivoted via a shaft 10 fixed to the grip tongue 2. 9,9
The lower end portions of each are pivotally connected via a shaft 13 to the other end of a swinging arm 12 whose one end is pivoted to the bed 1 via a shaft 11, and the swinging arm 12 is swung by a telescopic cylinder device 14. By stretching the pull rods 9, 9 and applying a closing force, the second
As shown in the figure, it is intended to be released from the mold.

The upsetter 15 shown in FIGS. 1 and 2 is
It is more advantageous than a vertical upsetter, and moreover, the pull rods 9, 9 can be retreated more greatly during mold release than a horizontal upsetter, that is, a horizontal upsetter that does not employ the swinging arm 12. Therefore, there is an advantage that the pull rods 9, 9 do not cause much trouble in loading and unloading materials, attaching/detaching molds, etc., and the mold closing force can also be increased.

However, the upsetter 15 shown in FIGS. 1 and 2 has a limit on the inclination angle, or receding angle, of the pull rods 9, 9 during mold release, so that the upsetter 15 can move the molds 4, 5 from both sides. There may not be enough space for attaching and detaching, and while its superiority is recognized, there is a desire to expand the attachment and detachment space while maintaining this advantage.

The present invention has been improved to satisfy the above requirements, and embodiments of the present invention will be described in detail below with reference to the drawings.

3 to 7 show an embodiment of the present invention together with the upsetting process, in which 20 is a bed, 21
2 is a grip tongue, and 22 is a horizontal shaft which rotatably connects the bed 20 and one end of the grip tongue 20.

A pair of split molds 23 and 24 are removably fixed to opposite ends of the bed 20 and the grip tongue 21, each having an upset die and a clamp die arranged side by side.

A slide 25 is located between the bed 20 and the grip tongue 21, and a guide portion 26 provided on the bed 20.
The punch 27 can be reciprocated with respect to the molds 23 and 24 via the dies 23 and 24, and a punch 27 is detachably fixed to the tip thereof.

Reference numeral 28 denotes a slide drive body, which is composed of a telescopic cylinder such as a hydraulic cylinder, and when this slide drive body expands, the punch 27 moves into the mold 2.
3 and 24, and can be freely inserted and removed there by being retracted and pulled out. Reference numeral 29 denotes a swing arm, one end of which is pivotally supported on the bed by a horizontal shaft 30, and a telescopic cylinder 31 is pivotally connected between the middle of the arm and the bed.

The lower end of the swing arm 29 and the pair of pull rods 3
The lower ends of 2 and 32 are connected by a horizontal pivot shaft 33,
The pull rods 32, 32 extend upward, and their upper portions are connected to each other by a pivot shaft 34.

In this embodiment, a guide part 35 that is long in the direction of the punch axis is formed on the upper edge of the grip tongue 21, and a block 36 that is movable along the guide part 35 is attached. In addition, the block 36 is configured to be reciprocated by a drive body 37 represented by a hydraulic cylinder;
numeral 39 is a drive body mounting shaft, and 39 is a block stopper. In addition, in the embodiment, a block is provided above the pull rods 32 and 33, that is, on the grip tongue 21 side.
Although a pull rod release mechanism consisting of a driving body is provided, this may also be provided at the bottom, that is, on the bed side.

In the above embodiment, the swing arm driver 31
is contracted to take the grip open position as shown in FIG. 3, and the material 40 is inserted between the molds 23 and 24.

When the drive body 31 is extended, the pair of pull rods 32, 32 are moved through the crank movement of the swing arm 29.
is stretched to apply the necessary closing force to the molds 23 and 24, as shown in FIG. 4, and grip (clamp) the material 40.

When the punch 27 is advanced with the workpiece 40 clamped, the head of the workpiece 40 is upset whether it is a punch or a solid material.

When the predetermined upset processing is completed, the grip opens and the punch retreats as shown in FIG. 6, and the material is transported to the next process.

Therefore, when it is necessary to inspect the molds 23, 24, inspect the punch 27, replace the molds 23, 24, etc.,
With the grip open, move the driver 3 as shown in Figure 7.
When the block 7 is retracted, the block 36 slides on the guide part 35 in the right direction in the figure, and the pull rods 32, 32 located on both sides of the molds 23, 24 are released along with the molds 23, 24, and the molds are released. This will create a large space on both sides.

Therefore, as shown in FIG. 8, a pair of exchange carts 41 and 42 are provided on both sides of the mold.
The molds 23 and 24 can be easily, quickly and accurately replaced via the molds 1 and 42. Incidentally, as shown in FIG. 8, it is desirable to provide mold guides 43 and 44 at the mounting portions of the molds 23 and 24.

That is, in FIG. 8, exchange carts 41 and 42 are self-propelled or push-pull types having wheels 41A and 42A, respectively, and conveyors 41B and 42 are mounted on the upper part.
It has B.

Therefore, the molds 23' and 2 are placed on one of the carts 41.
A new mold combining 4' is placed, and on the other hand,
The molds 23 and 24 to be replaced are moved to the other truck 42 as shown by arrow A, and new molds 23' and 2 are replaced.
It can be replaced by loading it as shown by arrow B with 4' set. After replacement, the trolleys 41 and 42
are each set back for the next task.

In this way, after the replacement work is completed, it is sufficient to extend the drive body 37 until the block 36 comes into contact with the stopper 39.

The present invention is as described above and can be applied to both hydraulic and mechanical upsetters, but in short, the present invention rotatably connects the bed 20 and one end of the grip tongue 21 via the shaft 22, Molds 23 and 24 are provided at opposite ends of the bed 20 and the grip tongue 21, respectively, and an upset mechanism including a punch 27 that can be inserted into and removed from the molds 23 and 24 is provided on both sides of the molds 23 and 24. In the upsetter 15 which applies the necessary mold closing force by stretching the pull rods 32, 32 provided in the punch, the pivot shaft 34 of the pull rods 32, 32 relative to either the bed 20 or the grip tongue 21 is movable in the direction of the punch axis. Since the upsetter is characterized by being provided with a drive body 37 which is provided on the block 36 and moves and fixes the block 36 in the direction of the punch axis, it has the following advantages.

A pull rod 32 that applies the necessary closing force to the molds 23 and 24 is attached to the bed 20 or the grip tongue 21.
On either side, the pivot shaft 34 can be moved in the direction of the punch axis to be released and fixed, and here,
Pull rods 3 on both sides of the molds 23 and 24
2, 32 without any obstruction, mold 2
3 and 24 and the punch 27, etc., and mold replacement work is also easy, quick, and accurate, productivity can be greatly improved.
Even if the pull-rod release mechanism is provided in this way, it does not impair the original function of the upsetter and is of great practical benefit.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views of a comparative example of the present invention when the grip is closed and opened, Figures 3 to 8 also show the steps of an example of the present invention, and Figure 3 is a cross-sectional view of the grip when it is opened and opened. Figure 4 shows when the grip is closed, Figure 5 shows it when upset, Figure 6 shows it when the grip is opened after upsetting.
Figure 7 is a sectional view of each side when the pull rod is released;
The figure is a front view of FIG. 7. 20... Bed, 21... Griptongue, 2
2... shaft, 23, 24... mold, 27... punch, 32... pull rod, 33, 34... pivot shaft, 36... block, 37... drive body.

Claims (1)

[Scope of utility model registration request] One end of the bed 20 and the grip tongue 21 is attached to the shaft 2.
2, and molds 23 and 24 are provided at opposite ends of the bed 20 and the grip tongue 21, respectively.
The upsetter 15 is equipped with an upset mechanism including a punch 27 that can be freely inserted and removed, and provides the necessary mold closing force by stretching the pull rods 32 and 32 provided on both sides of the molds 23 and 24. The pivot shaft 34 of the pull rods 32, 32 for either one is provided in a block 36 that is movable in the direction of the punch axis.
An upsetter characterized in that it is provided with a drive body 37 that moves and fixes the punch in the direction of the punch axis.