JPH05117705A - Multiple linear press - Google Patents

Abstract

PURPOSE:To obtain a multiple linear press by providing a rotating crankshaft with the phase shifted at the lower part of a base and upper and lower dies at the upper part in plural lines, shifting the phase with respect to the upper and lower dies and successively shifting the pressing stages. CONSTITUTION:A rotating crankshaft 2 with the phases shifted by 90 deg. is provided at the lower part of a base 1, guide posts 5 are opposed to the cranks 21, an upper ram 8 is furnished at the upper part of the guide post and a lower ram 9 at the upper part of the base 1, the pressing stages by the upper and lower rams 8 and 9 are differentiated from each other during one revolution of the crankshaft 2, and press working is conducted by either the upper ram 8 or the lower ram 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry powder molding multiple linear press machine for compressing a powder material by a mold to form an electronic component molded article.

[0002]

2. Description of the Related Art Conventionally, as a powder molding press device,
A single-shot press or a rotary press was used, and each of these presses had a characteristic point and a defect, and was used in a method of utilizing the characteristic point. That is, for example, in terms of productivity and space, the rotary press was superior, and the single-run press was superior in terms of initial / running cost, quality of molded products, product type compatibility, setup, and line production adaptability.

[0003]

SUMMARY OF THE INVENTION The present invention combines the features of conventional single-shot presses and rotary presses, and the main drive portion of the press is installed below the base to reduce vibrations, and the press process 1 During the cycle, one upper and lower mold is responsible for pressure molding, and in the next cycle, the next upper and lower molds and the upper and lower molds responsible for sequential pressure molding are changed so that the press driving power is equalized and the upper and lower molds are equalized. The present invention intends to provide a press molding machine that facilitates adjustment, replacement, and the like, and downsizes the entire press machine to accommodate a factory line.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a rotating crankshaft having a predetermined angular phase shift is provided in a lower portion of a base, and a pair of guide posts are provided in an upper portion of the base corresponding to crank portions of the crankshaft. A crosshead provided so as to project and slidably in a plurality of lines and having an upper ram portion provided with an upper die on the upper portion of the guide post was connected to the crankshaft via a connection rod on the lower portion. The cross heads are fixed to each other, and the lower ram part with the lower die is provided on the upper surface of the base so that it can be moved up and down. Each upper die receives a separate press process during one cycle of the press, and the press process changes sequentially for each cycle. It was done.

[0005]

By the rotation of the rotating crankshafts out of phase, each frame of the guide posts arranged in a plurality of lines takes charge of each press process of pressure molding, knockout, take-out and filling, and the next one rotation. (Cycle) allows the press steps of pressure molding, knockout, take-out and filling to be sequentially changed for each frame mold, and is always set to 1 during the press work cycle.
The pressure molding of individual frame molds is performed. Further, since the rotary crankshaft is provided in the lower part of the base, vibration is small.

[0006]

1 is a side view showing the appearance of a press machine on the prime mover side of a multiple linear press machine according to the present invention, and FIG. 2 is a front view of the same. 3 and 4 are a schematic explanatory view and a plan view of an internal press mechanism of a four-series linear press machine, in which a rotating crankshaft 2 having a phase difference of 90 degrees is borne by a base 1 and a variable speed motor 3 is used. It is rotationally driven via the air clutch brake device 4. Each crank portion 2 ₁ of the rotary crank shaft 2 a pair of guide posts 5 across the crankshaft is provided vertically slidably, the guide posts 5
The crosshead 6 ₁ is fixed to the lower part of the crankshaft, and the crosshead 6 ₁ is connected to the crank part 2 ₁ via the connection rod 7.
It is connected to, the upper part of the guide post 5 fixed crosshead 6 _2, the ram unit 8 on having the upper mold to the cross head 6 ₂ are provided to be vertically adjusted. As shown in the figure, the cross heads 6 ₁ and 6 ₂ are inclined with respect to the rotary crank axis, and are provided in a state where the heads are wrapped with each other so that the distance in the axial direction is shortened. A lower ram portion 9 having a lower die is provided on the upper surface of the base 1 so as to be vertically movable by a cam mechanism. The upper and lower molds of the upper ram portion and the lower ram portion respectively show, from the left side of FIG. 1, a pressurizing process, a knockout process, a removing process, and a material filling process. In addition, 10 is a press control board box, 11 is an air equipment box, 12 is a flywheel, 13 is a rotary encoder for press position detection, and 14 is a motor cover.

FIG. 5 shows a partially longitudinal side view of the pressing apparatus according to the present invention, in which a rotary crankshaft 2 having a crank portion 2 ₁ having a phase shift of 90 degrees at the lower portion of a base 1.
Bearings, and guide posts 5 and 5 are provided on the base 1 so as to be vertically movable by slidable bearings 15 at inclined positions with the rotary crankshaft 2 interposed therebetween, and the crosshead 6 is provided at the lower ends of the guide posts 5 and 5. ₁ is fixed with a nut, crosshead 6 ₁
A crank portion 2 ₁ of the rotary crank shaft 2 connecting rod 7 is connected by the head pin. A cross head 6 ₂ is fixed to the upper ends of the guide posts 5 and 5 with bolts, and an upper ram portion 8 is provided on the cross head 6 ₂ so as to be vertically adjustable by an up / down adjusting mechanism 16. A lower ram portion 9 hanging from the guide posts 5 and 5 is provided above the base 1.

6 and 7 show the details of the upper ram portion 8. The upper ram 17 is screwed onto the adjusting nut 18 at the central portion of the crosshead 6 ₂ fixed (bolted) to the upper ends of the guide posts 5, 5. And the adjustment nut 18 is rotatably provided, and the upper ram 1
An upper ram shaft 17 ₁ is provided at the center of 7 so as to be vertically movable by a spring, and a rod 19 is provided at the upper end of the upper ram shaft 17 ₁ . The upper joint 20 is fixed to the lower end of the upper ram shaft 17 ₁ . The adjustment gear 2 is provided on the upper end of the adjustment nut 18.
1 is fixed and rotated by the adjusting shaft 22 via a worm gear. When the adjusting gear 21 rotates, the adjusting nut 18 integrated with the adjusting gear 21 rotates, and the upper ram 17 moves up and down via the screwing portion to form a vertical movement adjusting mechanism. further,
A rod adjusting gear 21 ₁ meshes with the adjusting gear 21 via an idler gear, a lever support pin 23 screwed to the gear 21 ₁ moves up and down, and a rod adjusting lever 24 is pivotally attached to the upper end of the lever supporting pin 23. The other end of the lever 24 is in contact with the upper surface of the adjusting nut 25. The rod 19 is provided by the adjusting shaft 22 and the adjusting nut 25 or by the adjusting nut 25.
Just adjusted up and down.

8, 9, 10, and 11 show a lower ram adjusting mechanism. In FIG. 8, a lower ram support 26 is fixed to the guide posts 5 and 5 by a supporting lever 27 and a guide rod 28. An adjusting screw 30 is slidably provided on the guide rod 28 via a spring 29, and an adjusting gear 32 provided on an extrusion plate 31 is screwed to the adjusting screw 30. The lower ram 3 is provided at the center of the extrusion plate 31.
3 is fixed and the lower ram 33 is provided on the lower ram support 26 so as to be vertically movable. In the lower part of the lower ram support 26,
A guide rod 34 is fixed, and a receiving plate 36 is slidably provided via a spring 35. A filling adjusting screw 37 is screwed onto the lower end of the lower ram 33, and the receiving plate 36 is supported by abutting against an adjustable receiving member.
A lower joint 38 is adjustably fixed to the upper end of the lower ram 33 with a lock nut.

FIG. 9 is a right side view of FIG. 8, and the push-out plate 31 is fixed to the lower ram support 26 by a rotation stop pin 39. The lower ram 33 is prevented from rising by a floating prevention lever 40 having one end pivotally attached and a spring. 42 is an adjusting shaft of the extrusion plate 31, and 43 is a filling adjusting shaft.

In FIG. 10, when the adjusting shaft 42 is rotated, the adjusting gear 32, the idler 44, and the adjusting gear 32 are rotated via the worm and the worm wheel, and the pushing plate 3 is rotated.
1 is adjusted up and down (lower ram adjustment mechanism). Idler 4
4 is rotatably provided on an extruding plate 46 having a receiving portion for the bell crank 45.

In FIG. 11, the worm and the adjusting gear 47 meshing with the worm rotate the filling adjusting screw 37 by the rotation of the filling adjusting shaft 43 to adjust the filling amount.

12 and 13 show a frame-type withdraw mechanism, in which a bell crank 45 is pivotally mounted on a shaft 48 so as to be slidable, and one end of the bell crank 45 is attached to a receiving portion of an extruding plate 46 fixed to the extruding plate 31. Is connected by a pin 49, a pin 53 having a spherical bearing 52 supported by an extruding roller 51 is connected to the other end of the bell crank 45, and is urged downward by a spring 54. The pushing roller 51 is in contact with the pushing cam 50 provided on the rotary crankshaft 2.

14 and 15 show the details of the die (upper die, lower die) set attachment portion. Five rods are planted in a line on the die attachment body 55 attached to the upper part of the base 1. The lower die 56 provided is fixed, and a guide rod 59 is provided on the lower die 56 so as to be vertically movable. The lower end of the rod 59 is connected to the T-shaped joint 38 of the lower ram 33, and the upper end is provided with a frame die 57. The frame type support 58 is fixed. A guide rod 60 is further planted in the frame-type support 58, and an upper die support 62 having an upper die 61 in which five rods are planted in a line is provided on the rod 60 so as to be vertically movable, The upper mold joint 20 of the upper ram 17 is connected to the upper mold support 62.

16 and 17 show the details of the powder feeder part. A feeder cup lever 64 is connected to the tip of the feeder lever 63, and a powder storage tank (not shown) is provided at the tip part of the feeder cup lever 64. A feeder cup 65 having a continuous supply hose joint is rotatably attached,
The upper surface of the frame die 57 is slid by a feeder cup lever 64 to fill the frame die 57 with powder and scrape off excess powder. In addition, the molded product is scraped off into the trough 67. A spring 66 is provided on the feeder cup lever 64 so that the feeder cup 65 is in contact with the upper surface of the frame die 57. 67 is a molded product gutter, 68
Indicates dust reception.

18 and 19 show a drive mechanism of the feeder unit. A miter gear 69 which is fixed to the rotary crankshaft 2 and meshes with a miter gear to which the extruding cam 50 is fixed is connected to the feeder cam shaft 70, and the cam shaft 70 has a camshaft 70. A base cam 71 and an insert cam 72 are fixed to the other end, and a cam roller lever 73 is fixed to an end of a shaft 74 rotatably supported by a bracket 76 on the base 1. The other end of the cam roller lever 73 is fixed to the other end. The cam 7 via the cam follower 75.
1, 72 is abutted. The base end portion of the feeder lever 63 is wedged to the shaft 74, the feeder cup lever 64 is slidable, and the frame die 57 is filled with the powder in a timely manner. Base 1 for feeder lever 63
A cylinder piston 78, which is slidably supported by a support pin, is connected to an upper end of a bracket 77 that is fixedly attached to the bracket 77, thereby constantly urging the cam follower 75 to abut the cam surface.

1 to 19 have been described with reference to one pressing device for the rotary crankshaft 2, the pressing device of the present invention has four pressing devices that are 90 degrees out of phase with respect to the rotary crankshaft axis. They are connected in series with an inclination of 45 degrees. Also, the phase shift angle of the rotary crankshaft is set to 6
By setting 0 degrees, 90 degrees, and 120 degrees, 6 series type,
It is possible to use a quadruple type and a triple type linear press machine.

[0018]

According to the present invention, a rotary crankshaft having a predetermined angular phase shift is provided in the lower portion of the base, that is, a triple press type, a 4-press type, and a 6-type linear press device, if desired. A pair of guide posts are provided corresponding to each crank part, the guide posts are moved up and down by the rotation of the crankshaft, and the upper and lower molds are arranged facing each other above the base to perform the pressing work. Since the pressing process is made different from each other and the pressing process of pressing, knocking out, taking out, and filling is sequentially changed for each cycle of pressing, only one upper and lower die can be pressed during one cycle of pressing. Since the maximum load during the press cycle is one for the upper and lower dies, the maximum driving power of the press is kept low, and there is almost no load fluctuation, so vibration is reduced. In addition, since the press die is arranged on the upper part of the base with the rotary crankshaft provided in the lower part of the base, it is easy to reduce vibration, adjust the upper and lower molds, supply powder, take out molded products, etc.
The press machine itself was made compact and compact.
Therefore, when arranging in a factory, it is easy to form a line in which the press device and the material supply / extraction device are integrated.

[Brief description of drawings]

FIG. 1 is an external side view of a press machine on a prime mover side of a multiple linear press machine of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a schematic side view of a multiple linear press machine according to the present invention.

FIG. 4 is a schematic explanatory plan view of FIG.

FIG. 5 is a partially longitudinal side view of the pressing device of the present invention.

FIG. 6 is a partial vertical sectional view of an upper ram portion.

FIG. 7 is a partial cross-sectional view of FIG.

FIG. 8 is a partial vertical sectional view of a lower ram portion.

FIG. 9 is a partially longitudinal side view of FIG.

10 is a sectional view taken along line AA of FIG.

11 is a sectional view taken along line BB of FIG.

FIG. 12 is a drive cam mechanism diagram of a lower ram portion.

FIG. 13 is a sectional view taken along line CC of FIG.

FIG. 14 is a partial vertical sectional view of a die set mounting portion.

FIG. 15 is a partially longitudinal side view of FIG.

FIG. 16 is a partial vertical sectional view of the powder feeder section.

FIG. 17 is a partial cross-sectional view of FIG.

FIG. 18 is a drive cam mechanism diagram of the powder feeder unit.

FIG. 19 is a side view of FIG.

[Explanation of symbols]

1 Base 2 Rotating Crank Shaft 3 Variable Speed Motor 4 Air Clutch Brake Device 5 Guide Post 6 ₁ Cross Head 7 Connection Rod 8 Upper Ram Part 9 Lower Ram Part 16 Vertical Adjusting Mechanism 17 Upper Ram 18 Adjustment Nut 19 Rod 20 Upper Model Joint 21 Adjustment gear 22 Adjustment shaft 23 Lever support piston 24 Rod adjustment lever 25 Adjustment nut 26 Lower ram support 27 Support lever 28 Guide rod 30 Adjustment screw 31 Extrusion plate 32 Adjustment gear 33 Lower ram 34 Guide rod 36 Receiving plate 37 Filling adjustment screw 38 T-joint 40 Lifting prevention lever 42 Adjusting shaft 43 Filling adjusting shaft 44 Bell crank 46 Extrusion plate 50 Extrusion cam 51 Extrusion roller 52 Spherical bearing 55 Die mounting body 56 Lower die 57 Frame die 58 Frame die support 60 Guide roller 61 Upper mold 62 Upper mold support 63 Feeder lever 64 Feeder cup lever 65 Feeder cup 69 Miter gear 70 Cam shaft 71 Base Cam 72 insert cam 73 cams the roller lever

Claims (5)

[Claims] 1. A rotary crankshaft having a predetermined angle phase shift is provided in a lower portion of a base, and a pair of guide posts are projected in an upper portion of the base in correspondence with a crank portion of the crankshaft to slide in a plurality of lines. A crosshead, which is movably provided and has an upper ram portion provided with an upper die, is fixed to an upper portion of the guide post, and a crosshead connected to a crankshaft via a connection rod is fixed to a lower portion of the guide post. A lower ram part provided with a lower die on the table top is provided so as to be movable up and down, and each upper and lower die receives a separate press process during one cycle of press, and the press process is changed sequentially for each cycle. Multiple linear device that does. 2. The phase shift angle of the rotary crankshaft is 60.
The multiple linear press device according to claim 1, wherein the multiple linear press device is set at 90 ° or 120 °. 3. The multiple linear press apparatus according to claim 1, wherein the crosshead is provided so as to be inclined with respect to the axis of the rotary crankshaft. 4. The multiple linear press device according to claim 1, wherein the upper ram portion is provided so as to be adjustable with respect to a crosshead by a vertical adjustment mechanism. 5. The multiple linear press device according to claim 1, wherein the lower ram portion includes a lower ram adjusting mechanism and a frame type withdraw mechanism.