KR100491093B1 - Biaxial press molding system - Google Patents

Abstract

Disclosed is a positive pressure forming system that converts rotational motion into linear motion using disc cams facing each other, and generates pressure to be applied only to the rotational axis to reduce the strength and load of the frame. The positive pressure forming system of the present invention is provided so as to be in sliding contact between the cam device 10 including the cam 3 and the cam 3 in a shape facing each other, and the cam 3 and the cam 3, It includes a positive pressure press device 20 for converting the rotational movement of the cam (3) to a linear reciprocating motion to apply a positive pressure up and down to the pressurized object.

Description

Positive pressure molding system {Biaxial press molding system}

The present invention relates to a positive pressure forming system, and more specifically, by using a disk cam facing each other to convert the rotational motion to a linear motion, the reaction force generated at this time is applied only to the rotating disk and the rotating shaft to reduce the strength and load of the frame To be able.

In general, the press is a machine that presses the molding by converting the rotational movement of the motor into a linear reciprocating movement, the frame of the press is designed to reinforce the strength and load in accordance with the pressure applied to the molding.

In particular, conventional molding apparatuses using such a press are configured to rotate a cam by a motor and install a punch in a movable body that linearly reciprocates in response to the rotating cam so that the punch hits a molding seated on a die on the frame. This was.

Therefore, the instantaneous impact amount or pressing force of the punch is concentrated only on the frame, so that the frame is damaged or excessive noise and vibration are generated, thereby increasing the weight of the frame and reinforcing strength when designing the press.

Therefore, the molding apparatuses using the conventional presses require a very large and heavy frame, which requires a lot of device manufacturing costs, and has a problem in that a lot of manpower and time were wasted when installing, disassembling, or repairing the frame.

In addition, conventional molding apparatuses used a method of moving the die plate to generate a positive pressure up and down, but it is impossible to precisely control the upper and lower pressures, and also mechanically complicated, thus increasing the size of the entire press. .

In addition, conventional molding apparatuses use an eccentric cam having a central axis and an eccentric shaft eccentric in order to convert the rotational movement of the cam into a linear reciprocating motion. There was a problem that was impossible to control.

1A and 1B are conceptual views schematically showing an Eccentric Cam (EC) generally used in conventional molding systems, and FIG. 2 is a time course in a molding system using such a conventional Eccentric Cam (EC). It is a graph showing the displacement of the forming pressure and the eccentric cam (EC) according to.

1A, 1B, and 2, since the center axis and the rotation axis of the eccentric cam are eccentric as described above, the rotational movement of the eccentric cam, that is, the displacement H of the eccentric cam over time, continuously The molding pressure exerted on the die thus also changes continuously in the opposite direction to the displacement of the eccentric cam. That is, the molding pressure is minimum at the point where displacement H is maximum as shown in FIG. 1A, and the point at which the displacement is minimum (i.e., zero when the long axis of the eccentric cam is located at the lowest point) as shown in FIG. 1B. The molding pressure at is maximum. Therefore, there is a problem that it is impossible to maintain the molding pressure at the same pressure for a predetermined time since the time at which the molding pressure is maximized is instantaneously as shown in FIG. 2. Therefore, it is very difficult to produce a precise molding requiring a uniform molding pressure for a certain time.

An object of the present invention for solving the above problems is invented to have a structure in which the repulsive force generated during the pressurization is concentrated only on the rotation axis or only the minimum repulsive force is dispersed in the frame, thereby enabling the optimum design and light weight of the frame, and facing each other. Acids and valleys are formed on the friction surface of the cam, so that the continuous up and down pressure changes and the maximum pressure maintenance, pressurization and decompression can be freely adjusted, enabling precise pressurization control. The present invention provides an up-and-down positive pressure molding system capable of mass production of extremely precise molded parts by enabling proper distribution of pressure according to water parts and control of time point of pressurization.

Positive pressure forming system of the present invention for achieving the above object is provided with a cam device comprising a cam and a cam of the shape facing each other and the sliding contact between the cam and the cam, the rotational movement of the cam in a linear reciprocating motion It comprises a positive pressure press device for converting to form a positive pressure in the molding.

On the other hand, mass production can be achieved by installing the plurality of positive pressure press devices in a plurality, preferably at equal intervals or symmetrically with each other in the rotational direction of the cam, and suppress the repulsive force generated by the positive pressure. It may also disperse uniformly.

In addition, the cams are composed of an upper disc cam and a lower disc cam in which the surfaces in sliding contact with the positive pressure press face each other, and an appropriate length of the peaks and valleys along the surface in sliding contact with the positive pressure press unit by the rotational movement thereof. It can be arbitrarily set freely according to the type of the molded article, the time of generation of positive pressure applied to the molded article, the application time of the positive pressure, and the amount of pressure, which are formed at the height and the height. In particular, the upper disc and the lower disc cam can make an acid extended by a certain length to a certain height so that the positive pressure for the molding lasts for a certain time at the highest point, and protrudes separately to the lower disc cam for demoulding the molding It is also possible to further form a demolding acid.

On the other hand, the cam device and the frame; A motor fixed to the frame; A longitudinal reduction gear for transmitting a rotational force of the motor; A rotating shaft rotating at a speed reduced by the longitudinal reduction gear and bearing-supported to the frame; A connecting device connecting the longitudinal reduction gear and the rotating shaft; An upper disc cam and a lower disc shape of the upper disc cam and a ring-shaped upper orbit member formed on the bottom surface of the upper cam base and the top and bottom of the upper cam base formed in the top and bottom of the rotary shaft It is preferable to include a lower disc cam formed of a disk-shaped lower cam base to be formed and an upper surface of the lower cam base and a ring-shaped lower orbit member formed with a hill and a valley on the upper surface.

On the other hand, the load distribution means, between the upper disk cam and the frame and between the lower disk cam and the frame along the rotating shaft bearing the frame to distribute the pressure concentrated on the rotating shaft to the frame, for example For example, taper roller bearings may be installed.

On the other hand, one form of the positive pressure press device, the upper surface is provided with a roller in contact with the hill and the valley of the upper orbital member of the upper disc cam, the through hole is formed in both ends are moved up and down along the guide rod fixed to the frame An upper roller movable body which is freely installed; A screw bundle is installed on the upper surface to allow the gap and pressure to be adjusted with the upper roller movable body. A through hole is formed at both ends, and the lifting and lowering is freely installed along the guide rod fixed to the frame. A fixed phase punch movable body; An elastic member installed between the frame and the upper punch movable body and having a restoring force in a direction in which the upper punch movable body rises; A core penetrating the center of the lower punch to fix the height to the frame; A lower roller movable body on which a lower roller is installed in contact with the hills and valleys of the lower track member of the lower disc cam, and through holes are formed at both ends thereof, and the lifting and lowering is freely installed along the guide rod fixed to the frame; A screw bundle is installed on the lower surface so that the gap and pressure with the lower roller movable body are adjusted, and through holes are formed at both ends, and the lifting and lowering is freely installed along the guide rod fixed to the frame, and the lower punch is fixed on the upper surface. Hapunch movable body; And an elastic member installed between the frame and the lower roller movable body, the restoring force acting in a direction in which the lower punch movable body rises.

According to another aspect of the positive pressure press device of the present invention, a roller is provided on the upper surface of the upper orbital member of the upper disc cam, the roller is in contact with each other, and through holes are formed at both ends to move up and down along the guide rod fixed to the frame. The upper roller movable body is installed freely; A screw bundle is installed on the upper surface to adjust the gap and the pressure with the upper roller movable body, and through holes are formed at both ends so that the lifting and lowering is freely installed along the guide rod fixed to the frame, and the upper punch is fixed to the lower surface. Phase punch movable body; An upper elastic member installed between the frame and the upper punch movable body and configured to have a restoring force in a direction in which the upper punch movable body rises; A core fixed through the center of the lower punch to be height-adjustable to a core fixing plate structurally coupled to the frame; A cylindrical guide body fixed to the frame and having an open groove at a lower side thereof, and having a screw groove formed at an outer circumferential surface thereof; A lower punch movable plate fixed to an upper surface thereof, a central portion of the lower punch movable plate being inserted into a groove of the guide body and having a length of both ends thereof larger than a diameter of a screw groove of the guide body; The core is fixed to the upper surface, the center portion is in close contact with the groove of the guide body, and at the same time grooves are formed on both sides of the center portion, the length of both ends of the plate-shaped core larger than the diameter of the screw groove of the guide body Fixed plate; A push rod which is formed in a 'U' shape as a whole and is inserted in close contact with a groove of the guide body and penetrates the groove of the core fixing plate to contact the bottom surface of the lower punch movable plate; A roller is installed on the lower surface of the lower orbital member in contact with the hill and the valley, and through holes are formed at both ends thereof so as to freely move up and down along the guide rod fixed to the frame. A lower roller mover installed at an upper surface thereof so that a screw hole is formed at both ends thereof, and through holes are formed at both ends thereof, the lower roller movable body being freely mounted up and down along the guide rod fixed to the frame; A lower elastic member positioned between the rod and the core fixing plate and having a restoring force in a direction in which the rod is lowered; An upper core fixing screw ring and a lower core fixing screw ring screwed to the screw groove to adjust the height of the core; And a lower punch lowering height limit screwing screwed to the screw groove to adjust the amount of the molding powder filled on the lower punch.

Another embodiment of the positive pressure press device of the present invention, a roller is provided on the upper surface of the upper orbital member of the upper orbital member cam of the upper disc cam, the through hole is formed at both ends along the guide rod fixed to the frame An upper roller movable body in which the lowering is installed freely; A screw bundle is installed on the upper surface to adjust the gap and the pressure with the upper roller movable body, and through holes are formed at both ends so that the lifting and lowering is freely installed along the guide rod fixed to the frame, and the upper punch is fixed to the lower surface. Phase punch movable body; An upper elastic member installed between the frame and the upper punch movable body and configured to have a restoring force in a direction in which the upper punch movable body rises; A core fixed through the center of the lower punch to be height-adjustable to a core fixing plate structurally coupled to the frame; A cylindrical guide body fixed to the frame and having an open groove at a lower side thereof, and having a screw groove formed at an outer circumferential surface thereof; A lower punch movable plate fixed to an upper surface thereof, and a plate-shaped lower punch movable plate having a central portion inserted in close contact with a groove of the guide body; The core is fixed to the upper surface, the center portion is in close contact with the groove of the guide body, and at the same time grooves are formed on both sides of the center portion, the length of both ends of the plate-shaped core larger than the diameter of the screw groove of the guide body Fixed plate; It is formed in a 'U' shape as a whole, and the upper both ends thereof are in close contact with the grooves of the guide body and at the same time penetrate the grooves of the core fixing plate to be in contact with the bottom surface of the lower punch movable plate, and the length of the lower both ends thereof is guided. A push rod larger than the diameter of the screw groove of the body; A roller is installed on the lower surface of the lower orbital member in contact with the hill and the valley, and through holes are formed at both ends thereof so as to freely move up and down along the guide rod fixed to the frame. A lower roller mover installed at an upper surface thereof so that a screw hole is formed at both ends thereof, and through holes are formed at both ends thereof, the lower roller movable body being freely mounted up and down along the guide rod fixed to the frame; A lower elastic member positioned between the rod and the core fixing plate and having a restoring force in a direction in which the rod is lowered; An upper core fixing screw ring and a lower core fixing screw ring screwed to the screw groove to adjust the height of the core; And a lower punch lowering height limiting screwing screwed to the screw groove to adjust the amount of the molding powder filled on the lower punch by engaging the lower ends of the push rod.

On the other hand, the guide body is fixed to the frame, it can be fixed to the frame connected to the upper or lower portion, the groove of the guide body may be formed in a square or cylindrical, the upper orbit member and the lower side The hill and valley of the track member are manufactured according to the positive pressure generation point and the amount of pressure required for the molding, and the hill and the valley are formed in the lower track member for demolding the molding and filling the molding material, and the hill and valley are cams. It may further comprise a height adjusting means of, may further comprise a molding material supply means for supplying a molding material to the die of the positive pressure press device.

Hereinafter, a positive pressure molding system according to a preferred embodiment of the present invention will be described in detail with reference to the drawings.

3 is an exploded cross-sectional view of a circular cam (CC) according to an embodiment of the present invention according to a rotational trajectory, and FIG. 4 is a molding system using the original cam (CC) of the present invention over time. It is a graph which shows molding pressure and cam displacement.

3 and 4, the disc cam (CC) of the present invention is a disc (C2) having the same thickness and the track member (C1) is formed in the circumferential direction in the circumferential direction along the edge on the disc Is configured, the track member (C1) may be configured integrally with the disc (C2) or assembled to be assembled and disassembled. Positive pressure forming system of the present invention will be described in detail later, in Figure 3 these discs through the rollers in sliding contact with these track members (C1) after the track member (C1) of the disc cam (CC) is installed up and down in a form facing each other. Positive pressure is applied to the positive pressure pressing device existing between the cam to produce a molded article.

Unlike in FIG. 2 showing molding pressure and displacement in a molding apparatus using a conventional eccentric cam, in the present invention, the shape of the track member C1 formed on the disc C2 depends on the shape of the molding to be molded. Various hills and valleys of appropriate height and length can be used. Therefore, the timing and generation time of the positive pressure applied to the press apparatus can be controlled arbitrarily. In FIG. 4, molding pressure and displacement in each section a to e corresponding to the height and length of the track member C1 of FIG. 3 are schematically illustrated.

Next, the main configuration of the positive pressure forming system of the present invention and its operation principle will be described in detail.

First, as shown in FIG. 5, the positive pressure forming system of the present invention is not necessarily limited to the drawings, but the cams 3 installed on the same rotation shaft 2 facing each other and supported by the frame 1 are rotated. The technical idea is to convert the rotary motion of the cam and the cam 3 into a linear reciprocating motion of the upper punch 5 and the lower punch 6 in contact with the roller 4 therebetween.

Here, the two cams 3 facing each other are disc-shaped, and the contact surfaces that the cams 3 and the rollers 4 contact are not the circumferential surfaces of the disc-shaped cam 3 but the lower and upper surfaces facing each other. .

That is, the cam 3 and the roller 4 are in contact with each other so that the moving directions are perpendicular to each other, and the contact surfaces formed on the lower and upper surfaces of the disc-shaped cam 3 are curved to form valleys with the mountains along the circumferential direction. When the cam 3 is rotated and the cam 3 rotates, the roller 4 freely moves up and down while being in contact with the hill and the valley along the track of the step 3a.

Therefore, when the driver rotates the rotary shaft 2 with a motor (not shown), the upper punch 5 and the lower punch (so that the positive pressure can be formed above and below the pressurized object inserted into the die 7) 6) can move up and down vertically, and variously produced the shape of the hill and the valley formed on the step (3a) to control the lifting and lowering motion of the upper punch (5) and lower punch (6), respectively. do.

At this time, the cam 3 is of a disc shape, the rotation axis 2 is formed at the center thereof, since the center of the rotation axis and the center of the disc of the cam coincide with each other, there is no repulsive force due to eccentricity during rotation, When the upper punch 5 and the lower punch 6 are closed, a load that is applied to the rotation shaft 2 acts only on the rotation shaft 2 through the cam 3 and the cam 3, and the Only a small amount of pressure is applied to the outer frame 1.

Therefore, since the positive pressure forming system of the present invention is very light and can be installed only with an optimal frame, it can not only reduce the device manufacturing cost but also greatly reduce manpower and time when installing, disassembling, or repairing the same. It can be.

In addition, since the cam 3 and the cam 3 are rotated about the same rotation shaft 2 by the same motor (not shown), the cam height of the cam can be easily adjusted by adjusting the peak height of the cam. It is possible to change it, and to have a characteristic that can maintain the pressure at the maximum time point, which is a distinctive feature from the general campless.

Particularly, in the case of products which have a change in size due to post-molding process after sintering, etc., it is possible to control the molding pressure according to the part so that the pressure change by position and time applied to the upper and lower surfaces of the molding can be precisely controlled. This is because the quality of the product can be improved.

6 is a schematic view showing another example of the positive pressure forming system of the present invention. As shown in FIG. 6, the present positive pressure forming system differs from the positive pressure forming system shown in FIG. 5 in the roller 4 along the direction of the rotational movement of the cam 3 and the cam 3 installed on the same rotation shaft 2. And two positive pressure press devices including the upper punch 5 and the lower punch 6 are provided symmetrically on both sides. Such a positive pressure press apparatus may be provided plurally, for example, two symmetrically along the rotational direction of the cam 3 according to the designer's intention of mass production.

Upper punches 5 by the rotary motions of the disc-shaped cams 3 disposed up and down in each positive pressure press device, and the rollers 4 in sliding contact with the lower and opposing surfaces of the disc-shaped cams 3 facing each other. And the molding principle formed by the die 7 by the vertical reciprocating motion of the lower punches 6 is the same as described with reference to FIG. 5.

Meanwhile, in FIG. 6, the positive pressure press apparatus on the right side of the drawing shows a step in which the upper punch 5 is downward and the lower punch 6 is upward to compress the molding in the die 7, and the positive pressure press on the left side of the drawing is shown. The apparatus respectively represents the steps of filling the die 7 with the upper punch 5 upward and the lower punch 6 downward. However, the present invention is not limited to this, and according to the structure of the molding to be produced, as shown in FIG. 3, by forming the trajectory of the peaks and valleys of the track member (C1) formed on the disc (C2) in various ways, the upper punch (5) The pressure and the time of generation of the lower pressure applied by the lower punch 6 and the holding time can be appropriately adjusted.

On the other hand, in FIG. 6, unlike in FIG. 5, load distributing means 8 is further formed between the cam 3 and the frame 1 on the upper and lower sides of the rotary shaft 2, respectively. The load distributing means 8 is fixed to the cam 3 and rotates along the rotation shaft 2, and is positioned on the tapered bearing support plate 8a and the tapered outside of the bearing support plate 8a. It is fixed to the bearing 8b and the frame 1 which are moving to prevent the bearing 8b from being separated, and at the same time, the load applied to the rotating shaft 2 by the repulsive force of the cam 3 during molding is distributed to the frame 1. It consists of a bearing support 8c. The bearing 8b is preferably a tapered roller bearing, and the shape of the bearing support plate 8a and the bearing support 8c can be variously configured according to the shape of the bearing.

Although the cam 3 has a disc shape, as shown in FIG. 5, a rotation shaft 2 is formed at the center thereof, and the center of the rotation shaft 2 and the disc center of the cam coincide with each other, so that the cam is eccentric. Since there is no repulsive force due to the above, when the upper punch 5 and the lower punch 6 are closed, the load that is applied to the rotating shaft 2 is transmitted only to the rotating shaft 2 through the cam 3 and the cam 3. Since mainly acting, damage and distortion of the rotating shaft 2 can be expected. In FIG. 6, the load distributing means 8 protects the rotating shaft 2 by distributing a part of the load applied to the rotating shaft 2 to the frame 1 within a range in which a heavy load is not applied to the frame 1. .

However, in this embodiment, since the load applied to the frame 1 is only a part of the load applied to the rotating shaft 2, it is still possible to install the positive pressure forming system of the present invention in a very light and optimal frame only. .

Subsequently, a positive pressure forming system according to an exemplary embodiment of the present invention in which a top surface is flat and a bottom surface is concave in shape, such as a ceramic cover, is illustrated in FIGS. 7 to 9.

That is, as shown in Figures 7 to 9, the positive pressure forming system according to a preferred embodiment of the present invention, largely the cam device 10, the positive pressure press device 20 and the powder supply and molding conveying device 50 ).

Here, the cam device 10 of the present invention comprises an upper disc cam 12 and a lower disc cam 14 of the shape facing each other, the frame 101 forming the appearance and skeleton of the system, The motor 102 is fixed to the lower portion of the frame 101, the reduction gear 103 for transmitting the rotational force of the motor 102, and rotates at a speed reduced by the reduction gear 103, It is a vertically erect shape, the rotary shaft 104 supported by the bearing 105, the joint 106 connecting the longitudinal reduction gear 103 and the rotary shaft 104 and the longitudinal reduction gear 103 It is provided with a coupling 107 is installed on the longitudinal reduction gear 103 and the rotating shaft 104 so that can be replaced.

In addition, the cam device 10 is provided with the upper disk cam 12 and the lower disk cam 14 which rotates about the rotation shaft 104 together with the above-described rotation shaft 104, the upper disk The cam 12 is screw-assembled to the lower surface of the upper cam base 121 and the upper cam base 121 of the disk-shaped horizontally formed on the upper end of the rotary shaft 104, the ring is formed with a peak and valleys on the bottom It is a structure provided with the upper track member 122 of a shape.

In addition, the lower disc cam 14 is screw-assembled to the upper surface of the disk-shaped lower cam base 141 and the lower cam base 141 formed horizontally on the lower end of the rotary shaft 104, It is a structure provided with the ring-shaped lower track member 142 in which a valley is formed.

On the other hand, the positive pressure press device 20 of the present invention is installed so as to be in sliding contact between the upper disc cam 12 and the lower disc cam 14, the upper disc cam 12 and the lower disc cam 14. A device for forming a positive pressure in a molding by converting the rotational movement of the motor into a linear reciprocating motion, the upper roller movable body 22, the upper punch movable body 24, the upper elastic member 26, the core 28, the lower side The roller movable body 30, the lower punch movable body 32, and the lower elastic member 34 are provided.

That is, the upper roller movable body 22 has a roller 36 contacting the hills and valleys of the upper orbital member 122 on an upper surface thereof, and through holes are formed at both ends thereof to be fixed to the frame 101. The lifting and lowering along the guide rod 38 is freely installed.

In addition, the upper punch movable body 24, a screw bundle 40 is installed on the upper surface to adjust the pressure with the upper roller movable body 22, through holes are formed at both ends is fixed to the frame 101 The lifting and lowering is installed freely along the guide rod 38, and the upper punch 42 is fixed to the lower surface.

In addition, the upper elastic member 26 is provided between the frame 101 and the upper punch movable body 24, and a restoring force acts in a direction in which the upper punch movable body 24 rises.

On the other hand, the upper roller movable body 22, the upper punch movable body 24 and the upper elastic member 26 described above are located above the molding, and the core 28 and the lower roller movable body 30 are ) And the lower punch movable body 32 and the lower elastic member 34 are located below the molded product.

That is, the core 28 penetrates the center of the lower punch 44 and is fixed to the frame 101 in a screw forward and backward manner to adjust the height.

In addition, in order for the core 28 to penetrate the lower punch 44, the core 28 fixing part is installed below the lower punch 44 fixing part and has a plurality of supporting rods extending from the frame 101. It is an assembly frame structure supported by 291 and the support plate 292.

Thus, the user can determine the size of the molding to be formed by rotating the core screw bundle 29 installed on the support plate 292 to adjust the height of the core 28.

In addition, the lower roller movable body 30 has a roller 36 contacting the hills and valleys of the lower track member 142 on a lower surface thereof, and through holes are formed at both ends thereof to be fixed to the frame 101. The lifting and lowering is installed freely along the guide rod 38 to determine the filling amount of the molding powder and the demolding position after pressing.

At this time, as shown in Figure 8 and 9, the filling amount of the powder is the lower roller movable body 30 is subjected to the downward restoring force of the lower elastic member 34 and at the same time the movement of the lower roller movable body 30 The lower limit of the configuration is determined by the filling amount adjusting screw 391 screwed to the fixing plate (39).

In addition, the lower punch movable body 32 is provided with a screw bunch 40 on the lower surface of the lower roller movable body 30 so that the pressure and the pressure with the lower roller movable body 30 are formed, and through holes are formed at both ends of the frame 101. The lifting and lowering is freely installed along the guide rods 38 fixed to it.

In addition, the lower roller movable body 30 is a configuration in which the lower punch 44 is connected by an extension plate 31 and a supporting rod 311 provided by screw assembly, and the lower punch 44 is connected to the core 28. It is penetrated by the) is the assembly structure so that the fixing portion of the lower punch 44 can be installed above the fixing portion of the core (28).

Therefore, the core 28 is a structure that is fixed to the frame 101 so that the height of the upper surface can be adjusted, the lower punch 44 is manufactured in a shape surrounding the core 28 is the core ( Separately from 28) it is possible to independently move up and down by the lower roller 36 to move up and down along the lower disc cam (14).

In addition, the lower elastic member 34 is installed between the frame 101 and the extension plate 31 to suppress the rise of the extension plate 31 and the lower punch movable body 32 fixedly connected thereto. Resilience acts in the direction.

Here, the upper elastic member 26 and the lower elastic member 34 is the upper roller movable body 22, the upper punch movable body 24, the lower roller movable body 30, the lower punch movable body ( It is to ensure that the ascending and descending movement of the 32) without any play, the upper / lower roller 36 is always in contact with the upper disc cam 12 / lower disc cam 14 when pressurized.

Here, the change of the upper pressure or the lower pressure is rotated by the upper and lower screw bundles 40 attached to the upper roller movable body 22 and the lower roller movable body 30 to move back and forth to the roller 36 and the upper punch ( It is possible to adjust the distance between 42 and the lower punch 44.

In addition, the filling amount is changed by adjusting the falling distance of the lower punch 44 by rotating the filling adjusting screw 391 to adjust the amount of powder injected into the space between the die 60 and the lower punch 44. In addition, it is possible to adjust the height of the core 28 by rotating the core screw bundle 29, it is possible to change the filling amount and the pressing amount of the powder.

At this time, a hill and a valley can be formed on the lower track member 142 for demolding the molding and filling the molding material, and although not shown, as a height adjusting device of a cam having a hill and a valley, various screw forward and backward devices or , Fixing devices and the like can be used.

On the other hand, the powder supply and the molding material conveying device 50 of the present invention is to supply the molding material to the die 60 provided in the intermediate panel of the frame 101, a ceramic powder, a powder-type resin, a solid resin Is supplied to the die 60, and the upper punch 42 and the lower punch 44 is provided with a powder supply pipe 52 capable of the linear reciprocating motion to wait in the waiting area while the linear reciprocating motion In addition, the powder supply pipe 52 is configured to include a powder supply pipe conveying device 54 for reciprocating movement by using a disk rotation shaft and a gear chain directly connected to enable a sequential operation.

The powder supply and the molding conveying device 50 can be applied to a variety of powder supply and molding conveying device of various types and forms, such molding supply technology is already well known and modified and changed by those skilled in the art This is easy.

Therefore, referring to the operation relationship of the positive pressure forming system according to the preferred embodiment of the present invention described above, as shown in Figure 10, first, the powder supply and the molding material transfer device 50 is advanced to the powder die Supply to (60), and back again to wait in the standby position.

Subsequently, the rotational force of the motor 102 of FIG. 2 is decelerated by the longitudinal reduction gear 103 and transmitted to the rotation shaft 104. When the rotation shaft 104 rotates, the upper disc cam formed on the rotation shaft 104 is rotated. 12 and the lower disc cam 14 is rotated at the same speed.

At this time, when the roller 36 of the lower roller movable body 30 is raised in contact with the acid of the lower track member 142 of the lower disc cam 14, the lower track member 142 is also raised. The lower punch movable member 32 is raised together with the lower punch movable member 32, and the lower punch 44 fixed to the lower punch movable member 32 is raised as shown in FIG. Done.

Subsequently, when the roller 36 of the upper roller movable body 22 descends while contacting the acid of the upper track member, the upper punch movable body 24 also descends together, as shown in FIG. 12. The upper punch 42 is lowered.

Thus, as shown in Figs. 14 and 15, it is possible for the molded product to be positively pressurized by the upper punch 42 and the lower punch 44 to be molded to a uniform density.

That is, the pressing force Fd applied from the upper punch 42 to the molding occurs between the core 28 and the rising of the lower punch, and the pressure of the core portion is maintained in order to maintain the forming density at the center and outside. You should be able to control the (Fub) and the (Fua) independently. By precisely adjusting the lower pressing force (Fub) and the pressing force (Fua) by using the positive pressure forming system of the present invention, the manufactured molded article has a uniform molding density, and thus, deformation, such as bending or warping, may be performed even after the sintering process. It is possible to manufacture fine precision parts that do not involve.

In addition to the positive pressure forming system of the present invention, by producing a variety of types and forms of the upper punch, the lower punch and the core, it is possible to produce a molded article of various forms to be applied to the positive pressure.

Meanwhile, the peaks and valleys of the upper orbital member 122 and the lower orbital member 142 may be variously adjusted according to the positive pressure and the amount of pressure, and the upper orbital member 122 and the lower orbital member may have various shapes. 142 is prepared in advance, and the upper orbital member 122 and the lower orbital member 142 of the required shape according to the work is screwed into the upper cam base 121 and the lower cam base 141 for convenience. Can be used.

Subsequently, as shown in FIG. 13, the molded article molded in FIG. 12 is demolded using a simple method and then unloaded to the outside. That is, the demolding of the present invention is a demolding acid so as to protrude separately higher than the height of the mountain of the lower orbit member 142 in the section in which the positive pressure for molding is applied after the step of applying the positive pressure for molding in FIG. By further forming

Therefore, after the pressing for forming, the roller 36 of the upper roller movable body 22 is raised while in contact with the bone formed on the upper orbital member 122, and then the lower roller movable body 30 When the roller 36 is raised in contact with a separate demolding acid formed in the lower orbital member 142 of the lower disc cam 14, the lower punch movable body 32 together with the lower orbital member 142. As shown in FIG. 13, the lower punch 44 fixed to the lower punch movable body 32 ascends further, thereby demolding the molding formed on the die 60 from the die 60. The molded article is unloaded to the outside by a molded article unloading means (not shown) installed adjacently.

On the other hand, in the positive pressure pressing device of the positive pressure forming system of the present invention, in addition to the above-described configuration, the upper punch and the lower punch move independently of each other, and a variety of forms in which the lowering distance of the lower punch and the height adjusting function of the core can be achieved. 16 to 19 show another embodiment of such a positive pressure press as possible.

That is, as shown in Figures 16 to 19, the positive pressure press device 70 of the present invention, the upper roller movable body 22, the upper punch movable body 24, the upper elastic member 26, the core (28), the core fixing plate 72, the lower punch movable plate 74, the push rod 76, the lower roller movable body 78, the lower elastic member 80 and the guide body 82, The basic structure of the upper roller movable body 22, the upper punch movable body 24 and the upper elastic member 26 is as described above, in particular, the guide body 82, the core fixing plate 72, the The lower punch movable plate 74 and the push rod 76 are configured to be directly engaged with the guide body 82 in a stacked structure side by side in the up and down direction so as to be able to slide up and down independently of each other.

That is, the guide body 82, as shown in Figure 16 and 17, the upper side is fixed to the frame 101, the lower side is formed with a groove (82a) is opened, the screw groove 82b on the outer peripheral surface ) Is a cylindrical shape. On the other hand, the guide body 82 is another embodiment of the present invention, as shown in Figure 18, the lower side is fixed to the frame 101, and at the same time the lower side has a structure formed with a groove (82a) is opened In this case, since the lower side of the guide body 82 is fixed to the frame 101, it can be more structurally stable is preferable.

Here, the groove 82a is preferably a rectangular groove or a cylindrical groove capable of guiding the lifting and lowering movement.

In addition, the lower punch movable plate 74, the lower punch 44 is fixed to the upper surface, the center portion is inserted in close contact with the groove (82a) of the guide body 82, both ends 74a of FIG. The length of the plate is larger than the diameter of the screw groove (82b) of the guide body (82).

In addition, the core fixing plate 72, the core 28 is fixed to the upper surface, the center portion is inserted in close contact with the groove (82a) of the guide body 82 and at the same time two grooves on both sides of the center ( 72a) is formed, and the length of both ends 72b is a plate shape larger than the diameter of the screw groove 82b of the guide body 82.

In addition, the push rod 76 is formed in a 'U' shape as a whole, the upper both ends are inserted in close contact with the groove (82a) of the guide body 82 and at the same time the groove (72a) of the core fixing plate 72 It penetrates and contacts the bottom surface of the lower punch movable plate 74.

Here, the core 28 installed on the core fixing plate 72 passes through the lower punch 44 provided on the lower punch movable plate 74, and the lower punch 44 is different from the core 28. It is possible to move up and down independently by the lifting and lowering motion of the lower roller movable body (78).

That is, the lower roller movable body 78 has a roller 36 contacting the hills and valleys of the lower track member 142 on the lower surface thereof, and through holes are formed at both ends thereof to be fixed to the frame 101. The guide rod 38 is installed to move up and down freely, and the thread bundle 40 is installed on the upper surface so that the gap and pressure with the push rod 76 are adjusted, and through holes are formed at both ends of the frame 101. As the lifting and lowering is freely installed along the guide rods 38 fixed to the lower punch lifting mechanism of the positive pressure press device 70, as shown in FIG. 17, the lower roller movable body ( If the roller 36 of the 30 rises in contact with the acid of the lower orbital member 142 of the lower disc cam 14, the lower roller mover 78 also rises together, and the lower roller mover ( 78, the push rod 76 also rises together, and the push rod ( 76 raises the lower punch movable plate 74, and the lower punch 44 fixed to the lower punch movable plate 74 is raised.

Here, since the lower punch movable plate 74 has a plate shape having a length of both ends 74a larger than the diameter of the screw groove 82b of the guide body 82, the outer peripheral surface screw of the guide body 82 is The amount of the molding powder filled on the lower punch 44 may be adjusted by the lower punch lowering height limiting screw ring 84 screwed to the screw groove 82b corresponding to the diameter of the groove 82b.

That is, as shown in FIG. 18, the lower punch movable plate 74 has both ends 74a lowered by the lowering of the rod 76 and both ends thereof have the lower punch height limiting screw ring 84. This stops and the descent height is limited.

Accordingly, the user can adjust the filling amount of the molding powder by rotating the lower punch height limiting screw ring 84 to adjust the lower height of the lower punch 44.

On the other hand, since the core fixing plate 72 has a plate shape having a length of both end portions 72b larger than the diameter of the screw groove 82b of the guide body 82, the outer peripheral surface screw groove 82b of the guide body 82 The height of the core 28 is fixed by the upper core fixing screw ring 86 and the lower core fixing screw ring 88 which are screwed into the screw groove 82b corresponding to the diameter.

That is, as shown in Figures 16 to 19, the core fixing plate 72 is pressed in the vertical direction by the upper core fixing screw ring 86 and the lower core fixing screw ring 88, the height is fixed. Thus, the user can determine the size of the molding to be molded by rotating the upper core fixing screw ring 86 and the lower core fixing screw ring 88 to adjust the height of the core 28.

In addition, the lower elastic member 80 is located between the rod 76 and the core fixing plate 72 fixed by the upper and lower core fixing screw rings 86, 88 so that the rod 76 is Resilience acts in the downward direction.

On the other hand, fine adjustment of the upper pressure or lower pressure is adjusted by using the upper and lower screw bundles 40 attached to the upper roller movable body 22 and the lower roller movable body 78.

In addition, a separate guide rod may be installed to improve the accuracy of the lifting motion of the core fixing plate 72 and the lower punch movable plate 74.

FIG. 20 illustrates another embodiment of the present invention in which one lower elastic member 80 and a pusher 76 are separated from the guide body 82 in FIG. 19.

Referring to FIG. 20, the two ends 74a protruding from the lower punch movable plate 74 to be caught by the lower punch height limiting screw ring 84 are removed, and instead of the rod 76, Both ends 76a of the push rod 76 having the same shape as the both ends 74a are formed in the lower side, and the lower ends 76a can be caught so that the push rod 76 does not descend and falls below a certain height. The punch height limiting screw ring 84 is coupled to the bottom of the push rod 76.

That is, the lower punch movable plate 74, as described above, the lower punch 44 is fixed to the upper surface, the center portion is inserted in close contact with the groove (82a) of the guide body 82, the bottom contact with The lifting and lowering motion is performed by the lifting and lowering motion of the pushing rod 76, and when the lower punch 44 moves downward to fill the molding powder, both ends 76a of the pushing rod 76 are guided. The lower punch 44 by catching a lower punch lowering height limit screw ring 84 screwed to the screw groove 82b corresponding to the outer circumferential surface thread groove 82b diameter of the body 82 to limit further lowering motion. The amount of molding powder filled in the phase can be controlled. Therefore, the user can adjust the filling amount of the molding powder by rotating the lower punch height limiting screw ring 84 located below the rod 76 to adjust the falling height of the lower punch 44.

On the other hand, the core fixing plate 72, as described in Figure 19, the core 28 is fixed to the upper surface, the center portion is inserted in close contact with the groove (82a) of the guide body 82 at the same time both sides of the center portion Two grooves 72a are formed in the lateral direction, and the lengths of both ends 72b are formed in a plate shape larger than the diameter of the screw grooves 82b of the guide body 82, so that the guide body 82 The height of the core 28 is fixed by the upper core fixing screw ring 86 and the lower core fixing screw ring 88 which are screwed into the screw groove 82b corresponding to the outer circumferential surface of the screw groove 82b. The user can determine the size of the molding to be formed by rotating the upper core fixing screw ring 86 and the lower core fixing screw ring 88 to adjust the height of the core 28.

In addition, the push rod 76 is formed in a 'U' shape as a whole, the upper both ends are inserted in close contact with the groove (82a) of the guide body 82 and at the same time the groove (72a) of the core fixing plate 72 It penetrates and contacts the bottom surface of the lower punch movable plate 74, and the lower both ends 76a are configured to be caught by the lower punch lowering height limiting screw ring 84, as described above. The filling amount of the molding powder can be controlled by rotating the 84 to adjust the lowering height of the lower punch 44.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

For example, in the embodiment of the present invention, various embodiments, such as an assembly frame structure or a laminated engagement sliding structure using a support rod, have been proposed. In addition, the upper punch and the lower punch are capable of lifting and lowering independently of the core, and the respective lifting and lowering operations are possible. Or various kinds of configurations that enable a fixed height adjustment can be applied.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and the technical spirit thereof.

As described above, according to the positive pressure forming system of the present invention, the impact amount, the pressing force, and the load of the punch are concentrated on the rotating shaft by using the disk cams which face each other and are rotated by the same rotating shaft, so that the optimum design and weight of the frame can be achieved. By controlling the rotational speed of the two cams with a single motor and a rotating shaft, it enables quick and precise control, and freely adjusts the continuous positive pressure change applied to the molding by forming an acid and a valley on the friction surface of the cam. It is possible to control the time-by-position pressure of each part of the molding to produce a large amount of extremely precise parts, and it is easy to attach and detach the mold by externally combining the die set bundles, and to improve the joining time and precision when assembling complex molds. The core, bottom by eliminating unnecessary space elements Value, and has the effect of facilitating production it is possible to reduce the mold length, such as a punch.

1A and 1B are conceptual views schematically showing a conventional eccentric cam.

Figure 2 is a graph showing the displacement of the molding pressure and the eccentric cam over time in the molding system using a conventional eccentric cam.

3 is a developed cross-sectional view of the disc cam of the present invention deployed along a rotational trajectory.

Figure 4 is a graph showing the displacement of the cam and molding pressure over time in the molding system using the disc cam of the present invention.

5 is a conceptual diagram schematically showing a positive pressure molding system according to an embodiment of the present invention.

6 is a conceptual diagram schematically showing a positive pressure forming system according to another embodiment of the present invention.

7 is a perspective view showing a positive pressure forming system according to an embodiment of the present invention.

FIG. 8 is a partial cross-sectional view illustrating an open state of the upper punch and the lower punch of FIG. 5.

FIG. 9 is a partial cross-sectional view illustrating a state in which the upper punch and the lower punch of FIG. 5 are closed.

10 to 13 are enlarged cross-sectional views showing the powder molding process step by step in the positive pressure molding system of the present invention.

14 is a conceptual diagram illustrating a positive pressure formed in FIG. 12.

Fig. 15 is a partially cutaway perspective view showing a pressurized object produced by the positive pressure forming system of the present invention.

16 is a partial cross-sectional view showing an open state of the upper punch and the lower punch of the positive pressure press device according to another preferred embodiment of the present invention.

FIG. 17 is a partial cross-sectional view illustrating a state in which the upper punch and the lower punch of FIG. 16 are closed.

FIG. 18 is a partial cross-sectional view illustrating an open state of the upper punch and the lower punch of the positive pressure press device according to the improved embodiment of FIG.

19 is a perspective view illustrating the assembly of parts showing a guide body, a core fixing plate, a lower punch movable plate, a push rod, a lower roller movable body, and a lower elastic member of the positive pressure press device of FIG.

20 is a perspective view illustrating a component assembly showing a guide body, a core fixing plate, a lower punch movable plate, a push rod, a lower roller movable body, and a lower elastic member according to another embodiment of the present invention.

Claims (14)

Frame 101; A rotating shaft 104 rotatably supported by the frame 101; An upper disc cam 12 which is installed in a disc shape at an upper end of the rotation shaft 104 and has a sliding contact surface formed with an appropriate length and height in a circumferential direction along the edge of the bottom surface; Corresponding to the upper disc cam 12 is installed in the lower end of the rotary shaft 104 in the form of a disc, and in the circumferential direction along the edge of the upper surface to face the sliding contact surface formed on the bottom of the upper disc cam 12 A lower disc cam 14 having a sliding contact surface formed with a bone having an appropriate length and height; An upper roller in sliding contact with the sliding contact surface formed on a lower surface of the upper disc cam 12;  A lower roller in sliding contact with the sliding contact surface formed on an upper surface of the lower disc cam 14; An upper punch coupled to the upper roller and vertically reciprocating by the upper roller in sliding contact with the upper disk cam 12 according to the rotational motion of the upper disk cam 12; A lower punch 6 coupled to the lower roller and vertically reciprocating by the lower roller in sliding contact with the lower disk cam 12 according to the rotational motion of the lower disk cam 12; And It is provided between the upper punch (5) and the lower punch (6), and includes a die (7) is processed by the positive pressure by the upper punch (5) and the lower punch (6), On the sliding contact surface of the upper disk cam 12 and the sliding contact surface of the lower disk cam 14 is characterized in that the acid is extended by a certain length to a certain height so that the positive pressure applied to the molding lasts for a certain time at the highest point. Positive pressure forming system. According to claim 1, wherein the upper roller and the upper punch (5), and the lower roller and the lower punch (6) corresponding to the direction of the rotational movement of the upper disk cam 12 and the lower disk cam (14) Positive pressure forming system, characterized in that a plurality is installed. delete The positive pressure forming system according to claim 1, wherein a demolding acid is further formed on a sliding contact surface of the lower disc cam (14) for demolding the molding. delete The method of claim 1, The upper disc cam 12 is screw-assembled on the lower surface of the disc-shaped upper cam base 121 and the upper cam base 121 is formed on the upper end of the rotary shaft 104, the ring is formed with a peak and a valley on the bottom It includes an upper track member 122 of the shape, The lower disc cam 14, the disk-shaped lower cam base 141 and the lower cam base 141 formed on the lower end of the rotating shaft 104 is screw-assembled, the ring is formed on the upper surface of the hill and valleys Positive pressure forming system, characterized in that it comprises a lower orbital member 142 of the shape. According to claim 1, wherein between the upper disc cam 12 and the frame 101 and between the lower disc cam 14 and the frame 101 along the rotation axis 104 supported by the frame 101 Positive pressure forming system, characterized in that it further comprises a load distribution means for distributing the load concentrated on the rotating shaft 104 in the frame (101). The method of claim 6, The upper roller which is in contact with the hill and the valley of the upper orbital member 122 of the upper disc cam 12 is installed on the upper surface, and the through-hole is formed at both ends to guide rod 38 fixed to the frame 101 The upper roller movable body 22 is installed freely up and down along; Screw thread 40 is installed on the upper surface so that the gap and the pressure with the upper roller movable body 22 is adjusted, and through holes are formed at both ends, the lower and lower along the guide rod 38 fixed to the frame 101. The upper punch movable body 24 is installed freely, the upper punch 42 is fixed to the lower surface; An upper elastic member (26) installed between the frame (101) and the upper punch movable body (24), the restoring force acting in a direction in which the upper punch movable body (24) rises; A core 28 penetrating the center of the lower punch 44 so as to be height-adjustable to the frame 101; The lower roller which is in contact with the mountain and the valley of the lower track member 142 is provided on the lower surface, the through hole is formed at both ends, the lifting and lowering is freely installed along the guide rod 38 fixed to the frame 101 A lower roller movable body 30; A screw bundle 40 is installed on the lower surface so as to adjust a distance from the lower roller movable body 30 for the purpose of pressure adjustment, and through holes are formed at both ends thereof to fix the guide rod 38 fixed to the frame 101. The lower punch movable body 32 is installed freely up and down, the lower punch 44 is fixed to the upper surface; And A lower elastic member 34 installed between the frame 101 and the lower roller movable body 30 and having a restoring force acting in a direction in which the lower punch movable body 32 rises; Positive pressure forming system, characterized in that further comprises. The method of claim 6, The upper roller is provided on the upper surface in contact with the hill and the valley of the upper orbital member 122 of the upper disc cam 12, the through hole is formed at both ends along the guide rod 38 fixed to the frame 101 An upper roller movable body 22 to which the lifting and lowering is freely installed; Screw thread 40 is installed on the upper surface so that the gap and the pressure with the upper roller movable body 22 is adjusted, and through holes are formed at both ends, the lower and lower along the guide rod 38 fixed to the frame 101. The upper punch movable body 24 is installed freely, the upper punch 42 is fixed to the lower surface; An upper elastic member (26) installed between the frame (101) and the upper punch movable body (24), the restoring force acting in a direction in which the upper punch movable body (24) rises; A core 28 penetrating the center of the lower punch 44 so as to be height-adjustable to a core fixing plate 72 structurally coupled to the frame 101; A cylindrical guide body 82 fixed to the frame 101 and having a groove 82a formed at a lower side thereof, and having a screw groove 82b formed on an outer circumferential surface thereof; The lower punch 44 is fixed to an upper surface thereof, and a central portion thereof is inserted in close contact with the groove 82a of the guide body 82, and the length of both ends 74a of the screw groove 82b of the guide body 82 is fixed. A plate-shaped lower punch movable plate 74 larger than the diameter of n); The core 28 is fixed to the upper surface, the center portion is inserted in close contact with the groove 82a of the guide body 82, and at the same time, grooves 72a are formed on both sides of the center portion, and both ends 72b of A plate-shaped core fixing plate 72 having a length greater than the diameter of the screw groove 82b of the guide body 82; It is formed in a 'U' shape as a whole, the upper both ends are inserted in close contact with the groove (82a) of the guide body 82 and at the same time penetrates through the groove (72a) of the core fixing plate 72, the lower punch movable plate 74 Push rod 76 in contact with the bottom of the; A roller 36 is provided on the lower surface of the lower track member 142 in contact with the hill and the valley, and through holes are formed at both ends thereof, so that the lifting and lowering is possible along the guide rod 38 fixed to the frame 101. Is installed, the screw bundle 40 is installed on the upper surface so that the gap and pressure with the rod 76 is adjusted, the through-hole is formed at both ends to move up and down along the guide rod 38 fixed to the frame 101 The lower roller movable body 78 is installed freely; A lower elastic member (80) positioned between the rod (76) and the core fixing plate (72) for restoring force to act in a direction in which the rod (80) descends; An upper core fixing screw ring 86 and a lower core fixing screw ring 88 which are screwed into the screw groove 82b to adjust the height of the core 28; And A lower punch lowering height limiting screw ring 84 screwed into the screw groove 82b to adjust an amount of the molding powder filled on the lower punch 44; Positive pressure forming system, characterized in that further comprises. The method of claim 6, The upper roller which is in contact with the hill and the valley of the upper orbital member 122 of the upper disc cam 12 is installed on the upper surface, and the through-hole is formed at both ends to guide rod 38 fixed to the frame 101 The upper roller movable body 22 is installed freely up and down along; Screw thread 40 is installed on the upper surface so that the gap and the pressure with the upper roller movable body 22 is adjusted, and through holes are formed at both ends, the lower and lower along the guide rod 38 fixed to the frame 101. The upper punch movable body 24 is installed freely, the upper punch 42 is fixed to the lower surface; An upper elastic member (26) installed between the frame (101) and the upper punch movable body (24), the restoring force acting in a direction in which the upper punch movable body (24) rises; A core 28 penetrating the center of the lower punch 44 so as to be height-adjustable to a core fixing plate 72 structurally coupled to the frame 101; A cylindrical guide body 82 fixed to the frame 101 and having a groove 82a formed at a lower side thereof, and having a screw groove 82b formed on an outer circumferential surface thereof; A lower punch movable plate 74 having a lower punch 44 fixed to an upper surface thereof and having a central portion inserted in close contact with the groove 82a of the guide body 82; The core 28 is fixed to the upper surface, the center portion is inserted in close contact with the groove 82a of the guide body 82, and at the same time, grooves 72a are formed on both sides of the center portion, and both ends 72b of A plate-shaped core fixing plate 72 having a length greater than the diameter of the screw groove 82b of the guide body 82; It is formed in a 'U' shape as a whole, the upper both ends are inserted in close contact with the groove (82a) of the guide body 82 and at the same time penetrates through the groove (72a) of the core fixing plate 72, the lower punch movable plate 74 Contact the bottom surface of the), the length of the lower both ends (76a) of the push rod 76 is larger than the diameter of the screw groove (82b) of the guide body (82); The lower roller 36 is provided on the lower surface of the lower track member 142 in contact with the hills and valleys, and through holes are formed at both ends thereof to move up and down along the guide rod 38 fixed to the frame 101. It is installed to be free, the screw thread 40 is installed on the upper surface so that the gap and the pressure with the rod 76 is adjusted, through-holes are formed at both ends along the guide rod 38 fixed to the frame 101 A lower roller movable body 78 to which freely lowering is installed; A lower elastic member (80) positioned between the rod (76) and the core fixing plate (72) for restoring force to act in a direction in which the rod (80) descends; An upper core fixing screw ring 86 and a lower core fixing screw ring 88 which are screwed into the screw groove 82b to adjust the height of the core 28; And The lower punch lowering height limiting screw ring 84, which is screwed into the screw groove 82b to adjust the amount of the molding powder filled on the lower punch 44 by engaging the lower both ends 76a of the rod 76 ); Positive pressure forming system, characterized in that further comprises. The positive pressure forming system according to claim 9 or 10, wherein the guide body (82) fixed to the frame is connected to and fixed to the frame at an upper side or a lower side thereof. The positive pressure forming system according to claim 9 or 10, wherein the groove (82a) is rectangular or cylindrical. 7. The method of claim 6, wherein the peaks and valleys of the upper orbital member 122 and the lower orbital member 142 is produced according to the positive pressure generation time and the amount of pressure required for the molding, the demoulding and filling of the molding material of the molding For forming a hill and a valley in the lower orbit member 142, the positive pressure forming system, characterized in that it further comprises a height adjusting means of the upper disc cam and the lower disc cam is formed. The positive pressure forming system according to claim 1, further comprising a molding supply means for supplying a molding material to the die.