JPS6310036A - Parts former - Google Patents

Abstract

PURPOSE:To obtain the whole device in small size, and also, to eliminate the need to provide a work moving mechanism, by providing plural heating dies and punches on the periphery centering around a shaft on a die block having a circular section, and a ram, respectively, in a parts former having plural heating dies and punches. CONSTITUTION:A die block 10 having a circular section, which can rotate centering around a supporting shaft 5 is attached to a recessed part 3 of a parts former body 2, and on its surface, four pieces of heading dies 20, 21, 22 and 23 are installed. In a position opposed to this die block 10, a ram 1 which has four pieces of punches 30, 31 32 and 33 and advances and moved backward to and from the die block 10 along the supporting shaft 5 is provided. By advancing the ram 1, a work to be worked is worked by each pinch and heading die, and by moving backward the ram and rotating the die block 10 at one section interval, the work is moved and worked by one stage each. Since the die block 10 and the ram 1 are circular, and the punch and the die are attached onto the periphery, the parts former itself can be made small in size, and a moving device of the work becomes unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a parts former that produces a product by pressing a material cut to a certain size between a plurality of sets of heading dies and punches.

Problems to be Solved by the Prior Art and the Invention Conventionally, such parts formers have been manufactured by mounting a plurality of forging dies in a straight line at equal intervals on a die block fixed to the former body; A plurality of punches are attached to the face of the punch holder, which is fixed to the tip of the ram that reciprocates opposite the block, and correspond to the die block, so that the ram moves forward After being pressed between each set of forging dies and punches, each workpiece is pushed out from each forging die as the ram retreats, and is transferred to each transfer device attached to the homer body corresponding to each forging die. There is a part homer in which each workpiece is held in place by the forging die and transferred to the adjacent forging die, so that each workpiece is sequentially pressed between each pair of forging dies and punches. Since the dies and punches are arranged in a straight line on the die block and punch holder, the length of the die block and punch holder in the parallel direction is large, especially when there are a large number of forging dies and punches. Therefore, not only is it necessary to provide a wide opening for the die block of the homer body, but also a large movement space for the punch holder must be secured, which has the disadvantage that the homer body becomes large.

Means for Solving the Problems As a means for solving the above-mentioned problems, the present invention provides a die block in which a plurality of forging dies are mounted on a center line layer at equal angular intervals on a homer body. A driving mechanism is provided that supports the die block so as to be freely rotatable around a line, and rotates the die block in alternating directions or in the same direction by the interval angle between the adjacent forging dies,
At the stop position of the die block, a plurality of punches corresponding to the forging dies of the die block are attached to the tip of a ram that reciprocates opposite to the die block, and the punches corresponding to the forging dies of the die block are attached to the tip of the ram that reciprocates opposite the die block. By rotating a die block, the forging dies corresponding to each punch of the ram are changed, and the workpiece is sequentially pressed and formed between each of the punches and each of the forging dies.

Functions and Effects of the Invention The parts homer of the present invention has the above-mentioned structure, and the forging dies and punches are arranged circumferentially at the tips of the die block and the ram, respectively, so that they are not arranged in a straight line as in the past. In contrast, the die block and ram can be made smaller, making it possible to package the entire device in a smaller volume.Also, since the die block is rotated, the distance between each heading die and each punch can be reduced. By allowing each punch to receive and hold the pressed workpiece from its forging die as the ram retreats, the transfer mechanism for sequentially transferring the workpiece between each forging die and each punch is omitted. It is also possible to do so.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In Fig. 1, reference numeral 1 denotes the most extended punch body fixed to the front surface of a ram that reciprocates back and forth in opposition to the recess 3 of the homer main body 2. A long support shaft 5 is provided protruding parallel to the direction of movement of the ram,
As shown in FIG. 2, the tip of the support shaft 5 is slidably fitted into a sleeve 8 fitted into a support hole 7 formed in the vertical surface 6 of the recess 3 of the homer body 2. A die block 10 having a circular cross section is fitted around the support shaft 5 with a sleeve 11 fitted into a central hole penetrated through the center thereof, so that the die block 10 can rotate freely and freely slide relative to each other. is supported and its rear end abuts against the vertical surface 6 of the recess 3;
A collar 9 formed on the outer periphery is fitted into an annular groove 19 of a ring-shaped guide member 18 fixed to the vertical surface 6 by bolts 13 to restrict movement in the axial direction. A groove 12 of a certain depth is cut into a part of the surface from the side peripheral surface of the die block 10 to form a retreating surface 14.Including this retreating surface 14, a total of 5 pieces are mounted on the front surface of the die block 10. Holes 15 are formed on the circumference around the support shaft 5 at equal angular intervals, and the retreating surface 14
The protruding die 16 is inserted into the mounting hole 15 of the
A die holder 17 is fitted to each of the four die holders 17, and each of the first to fourth heading dies 20.
21, 22, and 23 are fitted clockwise in this order, forming the forming hole 20a of each heading die 20, 21, 22, 23.
, 21a, 22a, and 23a, respectively, and the respective protruding pins 20b, 21b have their tips fitted into them.

At the rear of 22b and 23b, as shown in FIG. 2, an abutment pin 37 having a flange 36 on the outer periphery near the center is movable back and forth, and each abutment pin 37 is moved backward by the elasticity of a spring 38. The collar 36 is in contact with the adjusting plate 43 with the slot 41 inserted through the window hole 40 of the die block 10, and by replacing the adjusting plate 43 with a different thickness, each forming hole 20a . It has become,
Each protruding pin 20b, 2 is pressed by the pressed abutment pin 37.
1b, 22b, and 23b are respectively projected. A recess 3 corresponding to the left side of the dice block 10
As shown in FIGS. 3 and 4, there is a mounting groove 2 formed on the side surface at the same height as the support shaft 5 of the die block 10.
5, a die holder 24a into which the shear die 24 is fitted;
The sheared surface of the shear die 24 is transferred to the die block 10.
The die holder 24a is fitted on the same plane as the retreating surface 14 of the die holder 24a, and a round piece type cutter 26 is fitted on the front surface of the die holder 24a. cutter 26
The cutter 26 reciprocates between two positions: a position where the cutter 26 aligns with the shear die 24, and a position where the cutter 26 fits into the groove 12 of the die holder 10 and aligns with the protruding die 16 on the retreating surface 14, as shown in FIG. A connecting member 28 is protruded from the lower side of the side peripheral surface of the die block 10, and an articulated rod 35 connected to the connecting member 28 by a pin 34 is connected to a ram (not shown). The die block 10 is connected to the mechanism, and the die block 10 is rotated in alternate directions by the distance angle between adjacent mounting holes 15 and 15 by the pushing and pulling movement of the connecting rod 35, and as shown in FIG. The protruding die 16 of the surface 14 is stopped at two positions, one corresponding to the side of the shear die 24, and the other, as shown in FIG. 4, the first heading die 20 is stopped at two positions corresponding to the side of the shear die 24. The first to fourth punches 30, 31, 3 are provided on the tip surface of the punch mount l.
2.33 is on the same circumference as each mounting hole 15 of the dice block IO, with the same angular spacing as the angular spacing between adjacent mounting holes 15, and the first punch 30 is at the stop position shown in FIG. A protruding die 16 of a certain die block 10
It is fixedly installed to correspond to the

Next, the operation of this embodiment will be explained.

The die lock lO is rotated every time the ram reciprocates, and as shown in FIGS. 3 and 5, the ejecting die 16
, the first to third heading dies 20, 21, and 22, respectively,
The positions corresponding to the first to fourth punches 30, 31, 32, and 33 (hereinafter referred to as the first position) and as shown in FIGS. 4 and 6.

The first to fourth heading dies 20.21.22.23 are alternately placed in two positions corresponding to the first to fourth punches 30.31.32.33 (hereinafter referred to as second positions). The dice block 10 is held in the fourth position.
When the cutter holder 27 is in the second position shown in the figure, as shown by the chain line in FIG. When the wire rod a is protruded by a certain length from the die block 24, and then the die block IO is rotated and held at the first position as shown in FIG. By sliding and fitting into the groove 12 of the die block 10 as shown in FIG.
is cut into a workpiece b of a certain length between the shear die 24 and the cutter 26, this workpiece b is held by the cutter 26 and transferred to the front of the ejection die 16, and then the punch attachment body is moved forward by the ram. As it moves to the front dead center and moves backward again, the ejecting pin 16b of the ejecting die 16 protrudes, and the workpiece b is pushed into the holding hole 30a of the first punch and held, and reaches the back dead center. When the ram that has arrived moves forward again, the die block 10 is held at the second position shown in FIGS. 4 and 6,
The first punch 30 held on the work b is the first heading die 2
0, as shown in FIG. 6, the workpiece b is pushed into the forming hole 20a of the first heading die 20 by the pressing pin 30b that protrudes as the first punch 30 moves forward, and the workpiece b is pushed into the forming hole 20a of the first heading die 20, and the workpiece b is inserted between the protruding pin 20b and the pressing pin 30b that protrudes as the first punch 30 advances. Then, as the ram retreats, the pressing pin 30b of the first punch 30 protrudes and presses the workpiece b while pressing the first punch 30.
By retreating, - the fire-formed workpiece b
remains in the forming hole 2Oa of the first heading die 20, and when the ram moves forward again, the die block 10 is held at the first position shown in FIGS. A second punch 31 corresponds to the heading die 20, and a fifth punch 31 corresponds to the forging die 20.
As shown in the figure, as the second punch 31 advances and retreats again, the ejecting pin 20 of the first heading die 20
When b protrudes, the workpiece b is ejected from the forming hole 20a and is pushed into the holding hole 3La of the second punch 31 and held, and when the ram reaches the rear dead center and moves forward again, the die block 10 is held by the second place fish shown in Figs. 4 and 6, and the second punch 3 holding work b
1 corresponds to the second heading die 21, and as shown in FIG. By being pressed between the parts, the head part is formed into a stepped shape, and the lower part of the neck is slightly narrowed to perform secondary forming. is transferred to the third punch 32 by one reciprocating movement of the ram, and transferred to the third punch 32 by the next reciprocating movement of the ram.
The pressing pin 32b and the ejecting pin 2 of the third heading die 22
2b, the lower part of the neck is further squeezed and tertiary forming is performed, and the tertiary formed workpiece b is pressed between the pressing pin 33b of the fourth punch 33 and the fourth It is pressed between the protruding pin 23b of the heading die 23, and the lower neck portion is squeezed into a stepped shape to perform quaternary forming.
The workpiece b subjected to the quaternary forming is ejected from the forming hole 23a by an ejecting pin 23b of the fourth forging die 23 that protrudes as the ram retreats.

In this embodiment, the workpiece pressed between a corresponding pair of heading dies and punches is held by the punch and sequentially transferred to the adjacent heading dies, but instead of doing this, A transfer device corresponding to each heading die is provided around the die block 10,
Alternatively, the die blocks 10 may be transferred by each transfer device, and in this embodiment, the die blocks 10 are rotated in alternate directions, but the die blocks 10 are rotated by the interval angle between adjacent heading dies. By rotating the four heading dies in the same direction and making the forming holes of the four heading dies the same shape, the workpiece can be held in each heading die and sequentially transferred to the front of the adjacent punch and pressed. , it is also possible to sequentially form only the head of the workpiece.

In this embodiment, the support shaft 5 that rotatably supports the die block 10 is fixed to the punch mounting body 1, but it may be fixed to the former main body 2 side.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a sectional view of the die block, Figs. 3 and 4 are front views showing the stop position of the die block, and Figs. 5 and 6 are It is a sectional view showing the correspondence between a punch and a heading die. 1: Punch attachment body 2: Homer body 10: Dice block 20.21.22.23: Heading die 30.
31.32.33: Punch 35: Articulated stick

Claims (1)

[Scope of Claims] 1. A die block in which a plurality of heading dies are mounted at equal angular intervals around a center line is supported on a homer main body so as to be freely rotatable about the center line, and the die block is A driving mechanism is provided to rotate the adjacent forging dies in alternating directions or in the same direction by the interval angle, and the die block is placed at the tip of a ram that reciprocates opposite to the die block at the stop position of the die block. A plurality of punches corresponding to each of the forging dies are attached, and by rotating the die block for each reciprocating movement of the ram, the forging dies corresponding to each of the punches of the ram are changed, and each of the forging dies is Parts homer 2, characterized in that the workpiece is successively pressed and formed between a punch and each of the forging dies.The die block is rotationally driven by the drive mechanism in alternate directions for each reciprocating movement of the ram. At the same time, each punch receives and holds the workpiece pressed between each of the forging dies from the forging die as the ram retreats, and one of the die blocks 2. The parts homer 3 according to claim 1, wherein the work is sequentially transferred to the adjacent heading dies each time the work is rotated in alternate directions. The ram is driven to rotate in alternate directions every time the ram reciprocates, and the workpieces that are pressed between the forging dies and the punches and pushed out from the forging dies are attached to the homer main body. 4. The parts homer 4 according to claim 1, wherein the die block is held by a transfer mechanism provided in the drive mechanism and sequentially transferred to the adjacent heading dies. The ram is rotated in the same direction for each reciprocating movement, and the workpiece pressed between the forging die and the punch remains inserted into the forging die and the adjacent punch The parts homer according to claim 1, wherein the parts homer is adapted to be sequentially transferred to the front surface of the parts homer.