JP3206669B2 - Multiple linear press for powder molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry-type powder molding multiple linear press apparatus for compressing a powder material with a mold to form an electronic component molded product.

[0002]

2. Description of the Related Art Conventionally, as a pressing device for powder molding,
Single presses and rotary presses have been used, and each of these presses has a feature point and a defect, and has been used in a manner that makes use of the feature points. That is, for example, in terms of productivity and space, the rotary press is superior, and the single-shot press is superior in all of the initial running cost, the quality of the molded product, the ability to handle the type, the setup, and the line production adaptability.

[0003]

SUMMARY OF THE INVENTION The present invention combines the features of a conventional single-shot press and a rotary press, and reduces vibration by installing a main drive portion of the press below a base to reduce the number of press steps. During the cycle, one upper and lower mold is in charge of pressure molding, and in the next cycle, the upper and lower molds that are in charge of the next upper and lower molds are changed so that the press drive power is equalized and the upper and lower molds are pressed. An object of the present invention is to provide a press forming machine which facilitates operations such as adjustment and replacement, makes the entire press apparatus compact, and is compatible with a factory line.

[0004]

According to the present invention, a rotating crankshaft having a predetermined angular phase shift is provided at a lower portion of a base, and a pair of guide posts corresponding to a crank portion of the crankshaft are provided at an upper portion of the base. A crosshead having an upper ram provided with an upper die is provided at an upper portion of the guide post, and is connected to a rotating crankshaft via a connection rod at a lower portion thereof. The lower ram portion provided with a lower die is provided on the upper surface of the base so as to be vertically movable, and the upper and lower ram portions are provided with a vertical adjusting mechanism for the upper ram portion. The lower ram vertical adjustment mechanism and the frame type provided in the lower ram portion are provided with a withdraw mechanism using an extrusion cam provided on the rotary crankshaft, and each upper and lower die is pressurized during one press cycle. , Knockout, ejection And responsible for material filling step, in which sequential pressing step in each cycle is to be changed.

[0005]

By the rotation of the rotating crankshaft out of phase, each frame of the guide posts arranged in a plurality of lines takes charge of the respective press processes of pressure forming, knocking out, taking out and filling, and the next one rotation (Cycle), the pressing process of pressure forming, knockout, unloading and filling is changed sequentially for each frame mold.
Pressure molding of individual frame molds is performed. Further, since the rotating crankshaft is provided below the base, vibration is small.

[0006]

FIG. 1 is a side view showing the outer appearance of a press unit on the prime mover side of a multiple linear press unit according to the present invention, and FIG. 2 is a front view thereof. 3 and 4 show a schematic explanatory view and a plan view of the internal press mechanism of the quadruple linear press. The base 1 has a rotating crankshaft 2 which is out of phase by 90 degrees and is supported by a variable speed motor 3. 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
Crosshead ₆₁ is fixed to the lower portion, the crank portion 2 ₁ crosshead ₆₁ via a 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. The crossheads 6 ₁ and 6 ₂ are inclined with respect to the rotating crank axis as shown in the figure, and are provided in a state where each head is wrapped so that the distance in the axial direction is reduced. A lower ram 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 dies of the upper ram and the lower ram respectively show a pressing step, a knockout step, an unloading step, and a material filling step from the left side of FIG. Reference numeral 10 denotes a press control panel box, 11 denotes an air equipment box, 12 denotes a flywheel, 13 denotes a rotary encoder for detecting a press position, and 14 denotes a motor cover.

[0007] Figure 5, there is shown a part longitudinal sectional side view of a press apparatus of the present invention, the rotation crank shaft 2 provided with a crank portion 2 ₁ shifted 90 degrees out of phase in the lower part of the base 1
The guide posts 5 and 5 are provided on the base 1 so as to be vertically movable by a sliding bearing 15 at an inclined position with the rotary crankshaft 2 interposed therebetween. ₁ is fixed with a nut and crosshead 6 ₁
A crank portion 2 ₁ of the rotary crank shaft 2 connecting rod 7 is connected by the head pin. The upper end portion of the guide post 5, 5 are fixed at a crosshead 6 ₂ volts, the upper ram portion 8 to the cross head 6 ₂ are provided to be vertically adjusted by vertically adjusting mechanism 16. In the upper part of the base 1, a lower ram portion 9 hanging from the guide posts 5, 5 is provided.

[0008] Figure 6, Figure 7 shows a detail of the upper ram portion 8, a central portion of the crosshead 6 ₂ secured (bolts) to the upper end of the guide post 5 and 5, threaded on the ram 17 to the adjusting nut 18 And the adjusting nut 18 is rotatably provided to the upper ram 1.
Provided on the ram shaft 17 ₁ vertically movable by a spring 7 the center of the rod 19 is provided at the upper end of the upper ram shaft 17 _1. The lower end of the upper ram shaft 17 ₁ is the upper mold joint 20 is fixed. The adjusting gear 2 is provided at the upper end of the adjusting nut 18.
1 is fixed and rotated by the adjustment shaft 22 via the worm gear. By the rotation of the adjustment gear 21, the adjustment nut 18 integrated therewith is rotated, and the upper ram 17 is moved up and down via a screwing portion, thereby constituting a vertical movement adjustment mechanism. further,
A rod adjustment gear 21 ₁ meshes with the adjustment gear 21 via an idler gear, a lever support pin 23 screwed to the gear 21 ₁ moves up and down, and a rod adjustment lever 24 is pivotally mounted on the upper end of the lever support pin 23. The other end of the lever 24 is in contact with the upper surface of the adjustment nut 25. The rod 19 is adjusted by the adjusting shaft 22 and the adjusting nut 25 or the adjusting nut 25.
Just adjusted up and down.

FIGS. 8, 9, 10 and 11 show a lower ram adjusting mechanism. In FIG. 8, a lower ram support 26 is fixed to guide posts 5 and 5 by a support 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 located at the center of the extrusion plate 31.
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 adjustment screw 37 is screwed to the lower end of the lower ram 33, and the receiving plate 36 is supported by an adjustable receiving member.
A lower joint 38 is fixed to the upper end of the lower ram 33 so as to be adjustable with a lock nut.

FIG. 9 shows a right side view of FIG. 8, in which the push-out plate 31 is stopped by the lower ram support 26 by a stop pin 39. The lower ram 33 is prevented from being lifted by a floating prevention lever 40 having one end pivotally connected thereto and a spring. Reference numeral 42 denotes an adjustment axis of the extrusion plate 31, and reference numeral 43 denotes a filling adjustment axis.

In FIG. 10, the adjustment gear 32, the idler 44, and the adjustment gear 32 are rotated through the worm and the worm wheel by the rotation of the adjustment shaft 42, 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 provided with a receiving portion of a bell crank 45.

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

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

FIGS. 14 and 15 show details of a die (upper die, lower die) set mounting portion. A die mounting body 55 mounted on the upper portion of the base 1 has five rods implanted in a line. 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-shaped support body 58 is fixed. A guide rod 60 is further implanted in the frame-type support 58, and an upper mold support 62 having an upper mold 61 in which five rods are implanted 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.

FIGS. 16 and 17 show details of the powder feeder section. A feeder cup lever 64 is connected to the tip of a feeder lever 63, and the tip of the feeder cup lever 64 is connected to a powder storage tank (not shown). A feeder cup 65 having a continuous supply hose joint is rotatably attached,
The upper surface of the frame mold 57 is slid by the feeder cup lever 64 to fill the frame mold 57 with powder and scrap off excess powder. Also intended to scrape the molded article receiving gutter 67. The feeder cup lever 64 has a spring 6
6, whereby the feeder cup lever 65 is in contact with the upper surface of the frame mold 57. 67 is a molded product gutter,
68 indicates receipt.

FIGS. 18 and 19 show a drive mechanism of the feeder unit. A miter gear 69 fixed to the rotary crankshaft 2 and meshing with a miter gear to which the extrusion cam 50 is fixed is connected to the feeder 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. Is the cam 7 through a cam follower 75.
1,72. The base end of the feeder lever 63 is wedge-fitted to the shaft 74, the feeder cup lever 64 is slidable, and the frame 57 is filled with powder at a good timing. Base 1 on feeder lever 63
A cylinder piston 78 slidably supported by a support pin is connected to the upper end of a bracket 77 fixed to the cam 77, whereby the cam follower 75 is constantly urged to abut on the cam surface.

Although FIGS. 1 to 19 have been described with reference to one pressing device of the rotary crankshaft 2, the pressing device of the present invention uses four pressing devices shifted in phase by 90 degrees with respect to the rotary crank axis. They are provided continuously with a 45-degree inclination. Further, the phase shift angle of the rotating crankshaft is set to 6
By setting it to 0 degree, 90 degrees, and 120 degrees, a 6-bar type,
It can be a quadruple type, triple type linear press device.

[0018]

According to the present invention, a rotary crankshaft with a predetermined angular phase shift is provided at the lower part of the base, that is, a triple, quadruple, or six-row linear press device is provided as desired. A pair of guide posts are provided corresponding to each of the crank portions, the guide posts are moved up and down by the rotation of the crankshaft, and the upper and lower dies are arranged opposite to each other at the upper portion of the base to perform a pressing operation. Since the pressing process is different from each other, and the pressing process of pressing, knocking out, taking out and filling is changed sequentially in each pressing cycle, only one upper and lower mold is used in one pressing cycle. The maximum load during the press cycle is equivalent to one upper and lower mold, the maximum press driving power is kept low, and there is almost no load fluctuation, so that vibration is reduced. In addition, since the press die is provided at the upper part of the base with the rotating crank shaft provided at the lower part of the base, it is easy to reduce vibration, adjust the upper and lower dies, supply powder, take out molded products, etc.
The press itself was made compact and compact.
Therefore, it is easy to make a line in which the press device and the material supply / extraction device are integrated at the factory.

[Brief description of the drawings]

FIG. 1 is a side view of an external appearance of a press device on a motor side of a multiple linear press device of the present invention.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic explanatory side view of the multiple linear press device of the present invention.

FIG. 4 is a schematic explanatory plan view of FIG. 3;

FIG. 5 is a partial longitudinal side view of the press 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. 6;

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

FIG. 9 is a partial longitudinal side view of FIG. 8;

FIG. 10 is a sectional view taken along line AA of FIG. 8;

FIG. 11 is a sectional view taken along line BB of FIG. 9;

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. 12;

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

FIG. 15 is a partial longitudinal side view of FIG. 14;

FIG. 16 is a partial longitudinal sectional view of a powder feeder unit.

FIG. 17 is a partial cross-sectional view of FIG. 16;

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

FIG. 19 is a side view of FIG. 18;

[Explanation of symbols]

 Reference Signs List 1 base 2 rotating crankshaft 3 variable speed motor 4 air clutch brake 5 guide post 6₁ Cross head 7 Connection rod 8 Upper ram part 9 Lower ram part 16 Vertical adjustment mechanism 17 Upper ram 18 Adjustment nut 19 Rod 20 Upper die joint 21 Adjustment gear 22 Adjustment shaft 23 Lever support piston 24 Rod adjustment lever 25 Adjustment nut 26 Lower ram support Body 27 Support lever 28 Guide rod 30 Adjusting screw 31 Extrusion plate 32 Adjusting gear 33 Lower ram 34 Guide rod 36 Receiving plate 37 Filling adjusting screw 38 T-shaped joint 40 Lifting prevention lever 42 Adjusting shaft 43 Filling adjusting shaft45 bell crank  46 Extrusion plate 50 Extrusion cam 51 Extrusion roller 52 Spherical bearing 55 Die mounting body 56 Lower mold 57 Frame mold 58 Frame mold 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 Camshaft 71 Base cam 72 Insert cam 73 Cam roller lever

Continuation of the front page (56) References JP-A-52-1776 (JP, A) JP-B-45-12797 (JP, B1) JP-B-41-8987 (JP, B1) JP-B-40-16392 (JP, A) , B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) B22F 3/03

Claims (1)

(57) [Claims] A rotary crankshaft having a predetermined angular phase shift is provided at a lower portion of a base, and a pair of guide posts are projected to an upper portion of the base corresponding to a crank portion of the crankshaft to slide in a plurality of lines. A crosshead provided movably, an upper ram provided with an upper die is provided at an upper portion of the guide post, and a crosshead connected to a rotating crankshaft via a connection rod is fixed at a lower portion, respectively. A lower ram with a lower die is provided on the base upper surface so as to be vertically movable, and the upper ram is provided.
The cross head provided with a vertical adjustment mechanism for the upper ram portion,
The lower ram has a lower ram vertical adjustment mechanism and a lower ram.
On the obtained frame mold, the extrusion provided on the rotary crankshaft
A withdraw mechanism by a cam is provided, and each upper and lower mold is pressurized, knocked out, taken out and
A multiple linear press machine for powder molding , wherein a material filling process is performed, and a pressing process is sequentially changed in each cycle.