JPS6039010A - Hydraulic hot shear - Google Patents

Abstract

PURPOSE:To avoid influence of heat from the heated material by arranging the supporting point of the cutting lever, the supporting point of the lever for counter holder, guide part and the drive part in positions distant from upper and lower part of the cutting section. CONSTITUTION:Respective drive mechanisms of a mobile shearing blade 10 and cramp block (not shown in the diagram) are arranged at the end part of the respective levers. According to this arrangement, these drive mechanisms are placed in positions which are some distance from either upper and lowr parts of the heating bar between the mobile shearing blade 10 and the fixed blades (not shown in the diagram) and they are kept away from a bad effect of heat. Furthermore, the power of a hydraulic cylinder 14 for cutting is enlarged by the lever ratio of the cutting lever 15 and applied to the cutting blade 10.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hydraulic shear installed in front of a die forging press in a continuous forging line ## to cut and supply a forging material from a heated par material to a fixed size. An example of a #2 manufacturing press equipped with a conventional crank type shear is shown. In the #1 manufacturing press section, the main slide (,) is raised and lowered by the drive of the alignment shaft (b) at the top of the frame (,). Die forging of the material to be heated and forged is carried out, and the front part of the Dakun-cut type shaft has an alignment shaft (slide (e) that goes up and down via the connecting rod (d)), a K-blasting movable blade (phantom and fixed blade) (-heated par material (h)
is sheared to a certain size and supplied to the press section by the loader (1).

When shearing, 8 constant blades (- and Krang's lock (, 1) K
The kakunta holder (k), which is cranked and faces the movable blade (f), is attached to the piston of the hydraulic cylinder <1), and the movable blade (f) and the par material (h)
It moves with the cut parts while holding them. 1st
Figure (b) Fi shows an example of a conventional hydraulic shear, and is the same as the previous example except that the movable blade (f) is driven by the ram (,)-ζ of the hydraulic cylinder (,) and operates vJllFr.〇This type In this case, especially in connection with forging, strict control of the length and volume of the forging material and the perpendicularity of the cross section are required.

However, in conventional hydraulic shears, the driving device is installed above or below the cutting part and is easily affected by heat from the heating material.
The gap between the movable blade (f) and the vJlfT plane of constant force @, which has the largest influence of 411'ft on the cutting edge &, changes as well as the beam section length and the perpendicularity of the cutting direction between the beginning of r-circling and after the passage of time. to do.

In addition, the component parts are damaged due to heat reception, and wear and tear is aggravated by contact with the drying scale, so it is impossible to maintain stable accuracy over a long period of time.In addition, the hydraulic oil in the cylinder easily deteriorates due to heat reception. There are problems such as the risk of fire caused by the oil. Roughly speaking, in the conventional Kakunta holder mechanism, only the force obtained by subtracting the power of the Kakunta holder from the driving force of the t7J# blade can be used as the actual cutting force, and the Kakunta cylinder pressure is determined by the setting of the crushing force of the relief pulp.

The Karantaka has changed from 2MK, and this has caused problems such as worsening the perpendicularity of the surface of the cut 11, and energy loss due to heat generation in the relief pal. The above d # problem of the conventional Hontosha has been solved. The invention is solved as follows.

In other words, in the present invention, the hydraulic cylinder supporting the kakunta holder is connected to the moving force W "to the drive member of the blade".
1. Balance the transmission system to the IJ cutting blade driving member and prevent it from being transmitted to external members outside the thread.
, 17JI+lr The driving force of the blade can be effectively cut R1tUζI4J without being reduced by the force Vζ of the kakunta holder.

In addition, in the present invention, the transfer wJI/I folding blade and clamp block are used for the gJllr lever and the kakuntahorta, respectively. WIK is arranged at a distance from the upper and lower parts.This lever mechanism allows
It is possible to eliminate or reduce various obstacles caused by the thermal influence from the heated material, and in addition, the cutting force of the 171 cutting blade can be made larger than the driving force of the drive part by adjusting the lever ratio. Need a lever guide for I7JwI
A cutting blade gap v4 adjustment mechanism is provided that is pressed against the cutting lever. Since this mechanism W can easily perform gear length adjustment, it is possible to cut high M&. The figure shows I' of the present invention, which is prefaced by δ in a thermo-isomorphic forging press.
FIG. 8 is a partial longitudinal sectional side view showing the overall configuration of the hydraulic pressure shear of the 14th embodiment, and FIG. 8 is a plan view thereof. In this embodiment, the shear is of the dacuncant type.

The heated par material (1) is fed by a feeding device (2)K through the shaft part (3) by a predetermined length until the leading end hits the stopper device (4). (5) is a common frame.

Sizing sickle, Sha part (3), Par wood (1)
Clamping hydraulic cylinder (6)
Clamp block (
8) K is pressed against the identification blade (9) and clamped. After the clamping is completed, the lower blade of the movable piece fur blade is moved from the lower blade kakunta holder (6) to the kakunta holder hydraulic cylinder U (see Figure 4) K to the kakunta holder lever (to be described later).
is moved to a position where it supports the part (1) cut to size from the part material (1) through -I: Post-transfer 11F+
9: The I cutting blade (g) is driven toward the fixed blade (9) by the cutting hydraulic cylinder α◆ via the cutting lever (to be described later) δ
VJ from the par material (1) due to the intersection of both edges! I # par (1) is cut by VJ, but the movable cutting blade σ (I is in contact with par material (1) K sharp, par to be cut (1) #'i Kawanta holder (b) eζ is cut while being supported 0 Figures 4 and 5 are actual flesh views of an example of the kakunta holder mechanism and the cutting WT local body part, which are shown in a slightly different arrangement from Figures 1 and 2 in order to facilitate understanding of the invention. and a top view. In this example, the clamp block (8) is attached to the clamp Jl lever (7) K, and the clamp river lever (7) is attached to the clamp block (8).
) #-1t-1 is pivotally supported by the fulcrum shaft (J4) and the other is connected to the clamping hydraulic cylinder (6), and the clamp block (8) is operated by hydraulic drive against the lower fixed blade (9). Similarly, the movable vJwT blade is riveted to the cutting lever (111), and the vJ Danzankawa lever (111) is pivoted to the fulcrum shaft at one end and connected to the hydraulic cylinder for cutting at the other end. The moving 111J 17J cutting blade (G) is actuated by the drive.0 In contrast to the drive mechanism of this moving vJ cutting blade (6), in the present invention, the kakunta holder nb is attached to one end of the kakunta holder bar 4, and the kakunta holder lever The hydraulic cylinder (to) for the kakunta holder, which is pivoted at the center on the fulcrum axis aη and connected to the leg end of the other force, is connected to the lever cJfj for 17Iw'r at the other end. In this way, the hydraulic cylinder (2) for the kakunta holder is not connected to the 7th frame (5), and the movable cutting blade is driven [attached to 1].
I am made to do so. With this kakunta holder mechanism, the kakunta holder force is balanced within the cutting blade drive member and the transmission system of the seven threads, and is not transmitted to the outside of the yarn. Therefore, the driving force of the cutting blade is not reduced by the kakunta balancer and is effectively cut. 0 Also, depending on the lever ratio of the shearing lever (to), the IJ cutting hydraulic cylinder α Clamp block (
As for 8), the driving mechanism is located in the lever part, so the heating material (9) between the movable shearing blade (g) and the fixed blade (9) is
1) 1MK's 111J* structure is located at a distance from above and below.

It can keep you away from the harmful effects of heat.

FIG. 6 shows an example of the gear adjustment mechanism of the UJ Wit blade. Referring also to Fig. 5, the fixed blade (9) and the movable blade (g)
To adjust the gap between the frame (6) and increase the gap,
Pushing the cutting lever (to) through the guide (7) (g) at the position that pinches the yIII cutting blade (g) from the pressing bolt 1141 K screwed into gives a parallel movement of 1IIJ,
It is fixed at the adjustable position 11iK by the tightening bolt ()HK which penetrates the frame (6) and is screwed into the guide Q1 (g). Reverse KF
When reducing jwjJ, push the cutting wire (to) through the guide (to) (g) screwed into the frame (5) and give a slight movement in parallel to the frame (5). ) Fixed in 1kjj adjustment positions. Since these adjustment mechanisms are located outside the path line of the /4-rope material ('), the gap al1mk can be adjusted without stopping the operation of the shear.
Fig. 7 shows the relative positional relationship of each member of the cutting part during the Dakun cut cutting operation, and Fig. 7 0) shows the position before cutting. Figure 7 (
b) is the state after cutting ◎Each member is shown with the same reference numerals as in the previous embodiment. ・Figure 8 shows the connection to the g'JllFr hydraulic cylinder a◆ and the Kakunta holder hydraulic cylinder (2). An example of a hydraulic circuit is shown in which 0(2) and 翺 indicate switching valves for respective cylinders, @ indicates a hydraulic pump, and (2) indicates a relief valve. These control units are also separated from each cylinder via flexible tubes, so that no malfunctions, malfunctions, or energy losses due to heat reception occur.

(No (The cup shows the acting force of each part.＠Figure 9 is
FIGS. 4 and 5 show an embodiment of the present invention which is different from the embodiment but is also of the dacuncant type. Hydraulic cylinder for clamp (
6) and the arrangement of the cutting hydraulic cylinder Q4 correspond to that shown in Figures wI2 and 8, which show the overall configuration. Parts that are equivalent to those of the previously described embodiments are indicated by the same reference numeral J& in the drawings, and detailed explanations thereof will be omitted.

The present invention is applicable not only to the Dakun cut type but also to the up cut type shear, and FIG. 10 shows an embodiment thereof.
1st! The figure shows the relative positional relationship of each member of the tFJ# local part due to amplifier cut cutting.
Figure 1 (b) shows the state after cutting. Equal parts are the same -4
◎Figure 12 shown from jK is another example of the present invention! An example is shown in which the middle point @ of the lever supporting the kakunta holder (b) is pivoted to the ram @ of the drive mechanism of the 9J cutting blade (g), and the other part of the hydraulic cylinder for the kakunta holder (the lever) is
6) is connected to Ram@.

Fig. 18 shows a rough embodiment of the present invention, in which the hydraulic cylinder (6) for the kakunta holder is connected to the ram) Vc11f. have been described, but their operation will be more easily known from what has been described in connection with the explanation of the structure.

As described above, according to the present invention, the following effects can be obtained.

(1) During cutting, the cutting material holding force of the Kakunta holder is transmitted to the driving member of the movable trout-r blade, and as this transmission system is unbalanced and does not spread to other parts, all of the driving force of the movable cutting blade is used for cutting. Available.

(1) Since the supporting force of the vJwT material does not change during cutting, the accuracy of the tJJ tit surface is high, and the squareness is high because it can be suddenly held in a closed position on the entire circumference according to the cross-sectional shape of the vQ material. Can be cut.

(2)) The drive part can be arranged in a position separated from the heated f17JIIFr material, which causes various problems due to heat, namely, a decrease in the accuracy of the VJ ifr part due to thermal expansion of one part 2 Deterioration of the hydraulic oil , the risk of fire due to oil, wear and tear on operating parts due to scale, etc. can be reduced.

(V) Since the gear M adjustment mechanism is provided outside the heat affected zone and the gap can be easily adjusted, the decrease in accuracy caused by continued cutting work can be corrected.

#JJIIFr can always achieve high precision in length and squareness.

ff) As a result of high-precision tJJ cutting, the lifespan of knives is longer.

There is also little wear and tear on other moving parts.

[Brief explanation of the drawing]

Figure 1 0) is equipped with a conventional crank type real shear jC,
FIG. 1(B) is a vertical sectional side view of an example of a conventional hydraulic shear, and FIG. 2 is an overall configuration of a hydraulic shear according to an embodiment of the present invention. FIG. FIG. 8 is a plan view thereof, and FIG. 4 is a vJllrJ equipped with a Dakun cut-type kakunta holder mechanism according to an embodiment of the present invention.
A front view of the S part and the drive part, FIG. 5 is a plan view thereof, and FIG.
The figure is a vertical cross-sectional view showing an example of the gap adjustment mechanism of the cutting blade. )Fi is a vertical sectional view showing the state after cutting, FIG. 8 is a diagram showing l@ of a hydraulic circuit to some hydraulic cylinders, and FIG. 9 is a diagram showing FI# of another embodiment of the present invention using the Dakun cut type. FIG. 1O is a front view of a cut-off local part and a driving part of an amplifier cut type embodiment of the present invention. FIG. 11a) is a sectional view showing the state of the up-cut type v'JliFT local area before 1711 cutting, 1st! Figure (b) is a cross-sectional view showing the state after tFJlr, Figure 12 is a partial vertical side view of another embodiment of the present invention, and Figure 18 is a vertical cross-sectional view of still another embodiment of the present invention. be. (1) Threat/par material, (1) @/#jJwT bar, (2)... feeding device, (3)... part of the sha, (4)...
・Stopper device, (5) Frame, (6) Clamp hydraulic cylinder, (7) Fist clamp lever, (8) Clamp block, (9) Fixed blade,
[Aspect] Fist/moving cutting blade, (B)...Kakunta holder, (
2)...Hydraulic cylinder for kakunta holder, QI...lever for kakunta holder, α◆・hydraulic cylinder for fist cutting, (
A)... Cutting lever, 4 αη conflict, fulcrum shaft, N) (G)
(Foundation)...Guide. (6)...Pushing is done with bolts, (E)...Tightening is done with bolts, @
(2)...Switching valve, O hydraulic pump, ■...Relief valve, (2)...Flexible pipe, Φ/Lever, @...Middle a,
@...Ram, (,)...Frame, (b)...-6
Shaft, (C) Main slide, (→... Connecting rod. (,)... Slide, (f) - Moving blade, (g)... Fixed blade. (h) Number heating par material, (1 )−・Loder, (j)−
・Clamp block, (k)...Kakunta holder,
<1)...Hydraulic cylinder, &n)...Hydraulic cylinder, (
→...Ram IF) (Skillful...acting force. 11 (A) ([]) Open 12 figure JP-A-Sho GO-39010 (9) Seri 13 figure [-1] -1 [-1]

Claims (3)

[Claims] (1) In the Honto shear, which continuously cuts the heated par material with a hydraulically driven movable cutting blade and a fixed blade,
A hydraulic shear characterized in that a hydraulic cylinder for supporting a kakunta holder facing a movable cutting blade and supporting a par material is disposed in conjunction with a driving member of the movable cutting blade. (2) Attach a crank block for clamping the par material between the movable cutting blade and the fixed blade.17) Attach a Fll new acid lever and a bar KQ for clamping, and cut the fulcrum, guide part and drive part of each lever. The hydraulic shear according to claim 1, wherein the hydraulic shear is disposed at a position spaced apart from above and below. (3) The hydraulic hot shear of Patent S1 Ice Category B Paragraph 2, characterized in that it is provided with a cutting blade gag W4 adjustment mechanism that presses the guide of the cutting lever against the cutting lever.