JP2016107314A - Production method of cored molding in powder compression molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a number of filling steps for filling powder in a mortar hole 4 in a production method of a cored molding.SOLUTION: A production method of a cored molding comprises: a filling step for filling powder in a mortar hole 4 by a filling device; a core supply step for, after the filling step, supplying cores in the mortar hole 4 by a core supply mechanism; a core pressing step in which, a lower end face of a core pressing member enters in the powder in the mortar hole 4 and presses the cores against the mortar hole; a core covering step for, after the core pressing step, pulling the lower end face of the core pressing member from the powder in the mortar hole, in which the cores are covered with the powder in the mortar hole; and a compression molding step for, after the core covering step, compressing and molding the powder filled in the mortar hole, with the cores, by upper and lower pestles 5, 6.SELECTED DRAWING: Figure 14

Description

  The present invention relates to a powder compression molding machine for compressing powder to produce pharmaceutical tablets and the like.

  In a powder compression molding machine in which the upper and lower punches slide up and down above and below the mortar hole provided in the table and compress the powder filled in the mortar hole, the powder filled in the mortar hole It is known that a cored molded product can be manufactured by supplying a core (inner core), filling powder on the core, and compression-molding with an upper iron and a lower iron.

  Conventionally, after filling the powder into the mortar, the core is supplied to the mortar, and further, the powder is supplied thereon and then compression-molded to produce a nucleated product.

  For example, in Patent Document 1, using a leaf spring and a core lock insertion pin, the core lock (core) is inserted into a mortar hole (mortar hole) by bringing the core lock insertion pin into contact with a push-down roller. Then, after supplying the core tablet to the mortar, the drug powder is further supplied and compression-molded by the drug powder second layer filling step.

  In Patent Document 2, the core punch is inserted into the die (mortar hole) and pressed (compressed) by pressing the core punch with the upper punch (upper punch). Then, the core is inserted into the die and pressed with a core punch, and then the powder material is further put into the die to produce a tablet.

  As can be understood from Patent Literature 1 and Patent Literature 2, in order to produce a nucleated molded article, it is common to supply a core into a mortar and then further supply powder to the core to perform compression molding. It was the target.

  However, for that purpose, a filling step of filling the powder into the mortar for the first time and a filling step of filling the powder into the mortar after supplying the core into the mortar are necessary. Two filling devices (feed shoes) for filling the mortar with powder were required, and two filling steps were required.

  Therefore, there is a problem that the filling process is increased as compared with the case of manufacturing a normal compression molded product, and it takes time to manufacture a nucleated molded product. Moreover, in order to arrange | position two filling apparatuses, there exists a problem that a big space is required on a table. Furthermore, there is a problem that the cost is increased when two filling devices are required. Moreover, in order to arrange two filling apparatuses on the table, it is necessary to make special specifications such as miniaturization of the filling apparatus, and there is a problem that it is more costly.

JP 2002-65812 A Japanese Patent Publication No.8-22478

  An object of the present invention is to reduce the filling step of filling powder in a mortar hole in a method for producing a nucleated molded article.

  One of the methods for producing a nucleated molded article in a powder compression molding machine according to the present invention is a table provided with a mortar hole penetrating vertically, and a lower arm that is slidable with its upper end inserted into the mortar hole. The upper end is slidable with the lower end inserted in the mortar, the filling device for filling the mortar with powder, the nucleus supplying mechanism for supplying the nucleus into the mortar, and the nucleus being pushed into the mortar A method for producing a nucleated molded article in a powder compression molding machine provided with a nuclear pushing mechanism comprising a nuclear pushing member, the filling step filling powder in a mortar with the filling device, and after the filling step A nucleus supplying step of supplying a nucleus into the mortar by the nucleus supplying mechanism, a nucleus pushing step of lowering the bottom surface of the nucleus pushing member into the powder of the mortar and pushing the nucleus into the mortar, and After the nucleus pushing step, the lower end surface of the nucleus pushing member is the powder of the mortar hole. A core covering step in which the core is covered with powder in the mortar hole, and after the core covering step, the powder filled in the mortar hole is compression-molded by the upper and lower punches together with the core. A compression molding process.

  If it is such, after supplying a nucleus in a mortar hole, a nucleated molded product can be manufactured even if it does not supply powder further in a mortar hole, and it fills a powder in a mortar hole The filling process can be reduced. In addition, since the powder is not further fed into the mortar after supplying the nucleus into the mortar, the position of the nucleus in the mortar hole (plan view) is difficult to move, and the position of the nucleus in the mortar hole (plan view) Easy to stabilize. Furthermore, the time for supplying the nucleus into the mortar can be made longer than the time for supplying the nucleus in a normal dry-coated tablet, and the supply of the nucleus into the mortar is easily stabilized.

  In addition, the method for producing a nucleated molded article in the powder compression molding machine according to the present invention includes a table provided with a mortar hole penetrating vertically, a lower arm that is slidable by being inserted into the mortar hole, An upper punch that is composed of a central punch and an outer cover that covers the side surface of the central punch, and whose lower end is inserted into the mortar hole and is slidable, a filling device that fills the powder in the mortar hole, and a nucleus in the mortar hole A method for producing a nucleated molded article in a powder compression molding machine provided with a core supply mechanism for supplying a powder into the mortar hole by the filling device, and after the filling step, A nucleus supplying step of supplying a nucleus into the mortar by the nucleus supplying mechanism, and a nucleus pushing step of pushing the nucleus into the mortar with the lower end surface of the central punch in the upper punch entering the powder of the mortar, After the core pushing step, the lower end surface of the central punch is pulled out from the powder of the mortar hole. A core covering step in which the core is covered with the powder in the mortar hole, and compression after the core covering step, the powder filled in the mortar hole is compression-molded with the upper and lower punches together with the core It may consist of a molding step.

  If it is such, even if a nucleus supply apparatus is not provided with a nucleus pushing member, the filling process which fills powder in a mortar can be reduced.

  In addition, the method for producing a nucleated molded article in the powder compression molding machine according to the present invention comprises a table provided with a mortar hole penetrating vertically, a central punch and an outer punch covering the side surface of the central punch. A lower arm that is slidable by inserting the part into the mortar, an upper arm that is slidable by inserting the lower end of the mortar, a filling device that fills the powder in the mortar, and the core A method for producing a nucleated molded article in a powder compression molding machine provided with a core supply mechanism for supplying a core into a mortar hole by the core supply mechanism, and after the core supply step A filling step of filling powder into the mortar with the filling device, and a first step of compression-molding a part of the powder filled into the mortar with the central punch and the upper punch and the core After the compression molding step and the first compression molding step, the central punch is lowered and the core is covered with the powder in the mortar. And a second compression molding step in which, after the core covering step, the powder filled in the mortar hole is compression-molded together with the core with the upper and lower punches. Also good.

  If it is such, even if a nucleus supply apparatus is not provided with a nucleus pushing member, the filling process which fills powder in a mortar can be reduced.

  Further, the number of the filling devices may be one. In the conventional method, when producing a nucleated molded article, at least the number of filling devices is two. However, according to the present invention, if the number of filling devices is one to produce a nucleated molded article. Is possible.

  Further, it is preferable that a width in a predetermined direction of a lower end surface of the core pushing member or a front end surface of the central rod is smaller than a width of the core in a predetermined direction. If it is such, when the core pushing member is extracted from the powder in the mortar hole, the powder in the mortar hole easily enters the space in the powder from which the core pushing member is extracted.

  Furthermore, the lower end surface of the nucleus pushing member may be in contact with only the upper surface of the nucleus. If it is such, when the core pushing member is extracted from the powder in the mortar hole, the powder in the mortar hole is likely to enter the space in the powder from which the core pushing member has been extracted.

  In addition, as a powder compression molding machine for carrying out the invention of such a manufacturing method, there are a rotary table having a mortar hole penetrating vertically, a lower arm with an upper end inserted into the mortar and slidable, and a lower end A rotary powder compression molding machine having an upper part that is slidable by inserting a part into a mortar, and a filling device for filling powder into the mortar and supplying a nucleus into the mortar And a core supplying device having a core pushing mechanism for pushing the core until it is embedded in the powder of the mortar, and the number of the filling devices is the same as the number of the cores. The number of the filling devices may be one.

  Note that the powder in the present invention is an aggregate of minute solids, and includes an aggregate of particles such as so-called granules and an aggregate of powder having a shape smaller than the granules.

  ADVANTAGE OF THE INVENTION According to this invention, in the manufacturing method of a nucleated molded article, the filling process which fills powder in a mortar can be decreased. Further, a nucleated molded article can be produced without supplying powder after supplying the core into the mortar. In addition, since the powder is not further fed into the mortar after supplying the nucleus into the mortar, the position of the nucleus in the mortar hole (plan view) is difficult to move, and the position of the nucleus in the mortar hole (plan view) Easy to stabilize. In addition, the time for supplying the nucleus into the mortar can be made longer than the time for supplying the nucleus in a normal dry-coated tablet, and the supply of the nucleus into the mortar is easily stabilized. In addition, there is no need to install two filling devices, which has the effect of cost reduction. Furthermore, there is no need for special specifications such as downsizing of the filling device, and a nucleated molded product can be manufactured with one general-purpose filling device.

1 is a side sectional view showing a rotary powder compression molding machine according to an embodiment of the present invention. The principal part top view of the rotary powder compression molding machine of the embodiment. The center expanded view of the rotary powder compression molding machine of the embodiment. The principal part perspective view which shows the nucleus supply apparatus of the rotary powder compression molding machine of the embodiment. The principal part perspective view which shows the nucleus supply apparatus of the rotary powder compression molding machine of the embodiment. The principal part perspective view which shows the nucleus supply apparatus of the rotary powder compression molding machine of the embodiment. The principal part top view of the rotary powder compression molding machine of the embodiment. The principal part perspective view of the rotary powder compression molding machine of the embodiment. The principal part sectional side view of the rotary powder compression molding machine of the embodiment. The principal part perspective view which shows the nucleus supply apparatus of the rotary powder compression molding machine of the embodiment. The principal part top view of the rotary powder compression molding machine of the embodiment. The principal part perspective view which shows the nucleus supply apparatus of the rotary powder compression molding machine of one Embodiment of this invention. The principal part sectional side view of the rotary powder compression molding machine of the embodiment. The figure which shows the compression molding process of the manufacturing method of the nucleated molded product in the powder compression molding machine of one Embodiment of this invention. The figure which shows the compression molding process of the manufacturing method of the nucleated molded product in the powder compression molding machine of one Embodiment of this invention. The figure which shows the compression molding process of the manufacturing method of the nucleated molded product in the powder compression molding machine of one Embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. The powder compression molding machine of this embodiment is a rotary powder compression molding machine that manufactures a nucleated molded product having a nucleus in a compression molded product formed by compressing powder. When the nucleated molded product is a pharmaceutical tablet, the core K is a core tablet containing an active ingredient.

  The process of manufacturing a nucleated molded product is as follows. First, powder is filled into the mortar hole 4 of the table 31 by the filling device X. Next, the nucleus K is supplied into the mortar hole 4 by the nucleus supply device Z. Next, compression molding is performed with the upper and lower ridges 3 and 4. Next, the nucleated molded product that has been compression-molded is taken out by the damper 17.

  The details are as follows. First, an overall outline of a rotary powder compression molding machine (hereinafter referred to as “molding machine”) will be described. As shown in FIG. 1, a vertical shaft 2 serving as a rotation shaft is provided in a frame 1 of the molding machine, and a rotating disk 3 is attached to the upper portion of the vertical shaft 2 via a connection portion 21.

  The turntable 3 rotates horizontally, that is, rotates around the vertical shaft 2. The turntable 3 includes a table (mortar disk) 31, an upper punch holder 32, and a lower punch holder 33. As shown in FIG. 2, the table 31 has a substantially disk shape, and has a plurality of mortar holes 4 at predetermined intervals along the rotation direction on the outer peripheral portion thereof. The mortar hole 4 penetrates the table 31 in the vertical direction.

  The table 31 may be divided into a plurality of plates. In addition, the table 31 itself does not have the mortar hole 4 directly, and a plurality of mortars which are separate from the table 31 and can be attached to and detached from the table 31 are mounted on the table 31, and each of these mortars is vertically moved. The structure which has the mortar hole penetrated may be sufficient.

  At the top and bottom of each mortar hole 4, the upper heel 5 and the lower heel 6 can be individually slid in the vertical direction with respect to the mortar hole 4. The lower rod body 62 is held by the lower rod holder 33. The tip 53 of the upper arm 5 enters and exits the mortar hole 4. The tip 63 of the lower punch 6 is always inserted into the mortar hole 4. The upper rod 5 and the lower rod 6 rotate together with the rotating disk 3 around the vertical shaft 2, that is, revolve.

  A worm wheel 7 is attached to the lower end side of the vertical shaft 2. A worm gear 10 meshes with the worm wheel 7. The worm gear 10 is fixed to a gear shaft 9 that is driven by a motor 8. The driving force output from the motor 8 is transmitted to the gear shaft 9 by the belt 11, and rotationally drives the vertical shaft 2, and thus the rotating disk 3 and the eaves 5 and 6 via the worm gear 10 and the worm wheel 7.

  Further, as shown in FIGS. 2 and 3, a preload that is paired up and down with the upper rod 5 and the lower rod 6 sandwiched between the upper rod 5 and the lower rod 6 on the revolution track around the vertical shaft 2 of the upper rod 5 and the lower rod 6. There are an upper roll 12 and a pre-pressing roll 13, a main-pressing roll 14 and a main-pressing roll 15. The preload upper roll 12 and the main pressure upper roll 14 press the head 51 of the upper collar 5, and the preload lower roll 13 and the main pressure lower roll 15 press the head 61 of the lower collar 6. The pre-loading roll 12 and the pre-pressing roll 13 and the main-pressing roll 14 and the main-pressing roll 15 compress the powder filled in the mortar hole 4 from above and below at the tip surfaces of the tip 53 and 63, The upper and lower arms 5 and 6 are urged in a direction to approach each other.

  A molded product discharge unit 16 is formed at a position advanced from the pressurization position by the main roll 14 and the main roll 15 along the rotation direction of the rotary disk 3 and the eaves 5 and 6.

  In the molded product discharge unit 16, the lower punch 6 is raised until the upper end surface of the tip 63 of the lower punch 6 is substantially the same height as the upper end of the die hole 4, that is, the upper surface of the table 31, and the molded product in the die hole 4 Is pushed out from the mortar 4. The molded product discharger 16 includes a damper 17 that guides the molded product extruded from the mortar hole 4. The molded product exiting the mortar hole 4 contacts the damper 17 by the rotation of the rotating disk 3 and moves along the damper 17 toward the molded product recovery position 18.

  Next, the filling device X in the molding machine will be described. As shown in FIGS. 2 and 3, a feed shoe X as a filling device is for filling powder into the mortar hole 4. The feed shoe X fills the mortar hole 4 with the powder supplied from the powder supply mechanism as the lower punch 6 descends to a predetermined height position. After the powder is filled with the feed shoe X, the feed shoe X scrapes off the powder that has overflowed from the mortar hole 4 by the ascending lower punch 6 and removes it from the mortar hole 4.

  Next, a first embodiment and a second embodiment of the nucleus supply device Z that supplies the nucleus K into the mortar 4 will be described.

<First Embodiment> As shown in FIGS. 2 and 4 to 11, the nuclear feeder Z includes a transfer disk Z1 which is a transfer body for transferring the nucleus K to the mortar 4, and a first cam Z3 on the upper part thereof. The second cam Z4 and the safety cam Z5, the transfer member Z2 engaged with the cams Z3, Z4, and Z5, and the guide member Z6 are provided on the outer periphery of the transfer disk Z1. Then, the nucleus K is transferred by the nucleus supply device Z. The nucleus supply device Z is rotationally driven by a driving force output from a motor (not shown) disposed below the transfer disk Z1. The rotation drive rotates so as to be synchronized with the rotation of the turntable 3. In this embodiment, the transfer main body uses the transfer disk Z1 and has a disk shape. However, the transfer main body may be rectangular, for example, and is not limited to the disk shape.

As shown in FIG. 10, the transfer disk Z <b> 1 has a substantially disk shape in plan view, and has a plurality of substantially U-shaped cutout portions Z <b> 12 in order to hold the nucleus K on the circumferential portion. Further, the transfer disk Z1 has a plurality of long holes (moving grooves) Z11 extending in the radial direction in order to move the transfer member Z2 back and forth in the radial direction in plan view from the center side of the transfer disk Z1. The transfer disk Z <b> 1 is a rotating body that rotates horizontally, that is, rotates around the rotating disk 5, and its outer peripheral portion overlaps with the outer peripheral portion of the table 31. Specifically, the trajectory of the mortar 4 of the table 31 and the trajectory of the cutout portion Z12 of the transfer disk Z1 overlap.
As shown in FIG. 8, the transfer member Z2 includes a base member Z21, a holding member Z22, and a driving member Z23, and the holding member Z22 and the driving member Z23 are positioned on the base member Z21.

  The base member Z21 has a through hole Z211 penetrating vertically at the distal end side, a roll Z25 which is a first engagement member on the proximal end side, and a key member Z29 which fits into the elongated hole Z11 of the transfer disk Z1 below. Is provided. When the roll Z25 engages with the first cam Z3, the key member Z29 of the base member Z21 moves back and forth along the elongated hole Z11 of the transfer disk Z1. Since the long hole Z11 extends in the radial direction of the transfer disk Z1, the transfer member Z2 moves back and forth in the radial direction in plan view from the center side of the transfer disk Z1.

  The holding member Z22 is substantially L-shaped in a side view, and the driving member Z23 is coupled to the base end side of the holding member Z22 and is pivotally supported by the base member Z21 by the axis Z28 at the corner. And the front end side of the holding member Z22 is divided into two forks so as to sandwich both side surfaces of the base member Z21, and the front end thereof is notched. And the protrusion Z241 of the side surface of the nucleus pushing member Z24 is hold | maintained by the notch-shaped part Z12.

  Even if the nucleus supply device does not include a nucleus pushing member, the filling process of filling powder in the mortar can be reduced.

  The drive member Z23 includes a second engagement member Z26 on the distal end side and a safety member Z27 on the proximal end side. When the second engaging member Z26 engages with the second cam Z4, the driving member Z23 and the holding member Z22 pivot about the axis Z28, and the core pushing member Z24 descends. When the nucleus pushing member Z24 does not rise at the predetermined position, the safety member Z27 engages with the safety cam Z5 and raises the nucleus pushing member Z24. In this embodiment, the drive member Z23 includes the second engagement member Z26 and the safety member Z27. However, the drive member Z23 and the holding member Z22 are integrated, or the holding member Z22 is the safety member Z27. May be provided. Further, in this embodiment, ball plungers are used for the second engagement member Z26 and the safety member Z27, but they may not be ball plungers and may be engaged with the second cam Z4 or the safety cam Z5. That's fine.

  The core pushing member Z24 is held by the distal end side of the holding member Z22 so that the through hole Z211 of the base member Z21 can slide up and down. Specifically, the both sides of the core pushing member Z24 in plan view have a substantially cylindrical projection Z241 held by the holding member Z22, and the projection Z241 is held by the notched portion Z12 of the holding member Z22. As a result, when the holding member Z22 pivots about the axis Z28, the core pushing member Z24 moves up and down. Due to the weight of the drive member Z23 coupled to the proximal end side of the holding member Z22, the nucleus pushing member Z24 held on the distal end side of the holding member Z22 is normally positioned at the raised position.

  The lower end surface Z241 of the nucleus pushing member Z24 has a width in a predetermined direction smaller than a width in the predetermined direction of the nucleus K, and contacts only the upper surface of the nucleus K. As a result, when the core pushing member Z24 is extracted from the powder in the mortar hole 4, the powder in the mortar hole 4 can easily enter the space in the powder from which the core pushing member Z24 has been extracted. Moreover, only the peripheral part of the lower end surface Z241 of the nucleus pushing member Z24 may contact the nucleus K. Further, it may be in contact with the core K at a plurality of locations on the peripheral edge of the lower end surface Z241. In such a case, since the core K contacts the lower end surface Z241 at a plurality of locations, the core K can be pushed into the powder of the mortar hole 4 while stabilizing the core K.

  Next, as shown in FIGS. 6 and 7, the first cam Z3 is provided on the transfer disk Z1 and engages with the roll Z25. The first cam Z3 sandwiches the roll Z25 before and after the transfer disk Z1 in the radial direction, and the roll Z25 moves along the shape of the first cam Z3. Accordingly, the transfer member Z2 is flat from the center side of the transfer disk Z1. It moves back and forth along the shape of the first cam Z3 in the visual radiation direction. When the nucleus K is supplied to the transfer disk Z1, the nucleus pushing member moves inward in the radial direction of the transfer disk Z1, and when the nucleus pushing member Z24 pushes the nucleus K into the mortar 4, the transfer member Z2 moves in the radial direction. Move outward. The shape of a part of the first cam Z3 in plan view is a shape adjusted so that the core pushing member Z24 follows the same locus as a portion of the locus of the mortar hole 4 of the rotating disk 3. Thereby, the section where the pushing member Z24 is located on the locus of the acetabulum 4 of the rotary disk 3 becomes long, and there is a time allowance for alignment with the center of the mortar hole 4 in plan view. It is possible to accurately supply the nucleus K.

  In this embodiment, while the transfer disk Z1 and the transfer member Z2 are rotating, the first cam Z3 and the roll Z25 are always engaged, but may not be always engaged.

  Next, as shown in FIGS. 5 and 8, the second cam Z4 is provided on the transfer disk Z1, is positioned on the first cam Z3, and engages with the ball plunger Z26. The ball plunger Z26 is pushed along the shape of the second cam Z4, and accordingly, the holding member Z22 and the drive member Z23 pivot about the axis Z28, and the nucleus pressing member Z24 is lowered. When the transfer member Z2 moves to a position where there is no second cam Z4, the holding member Z22 and the drive member Z23 pivot about the axis Z28 due to their own weight, and the nuclear pressing member Z24 rises.

  In the present embodiment, the second cam Z4 and the second engagement member Z26 are engaged only when the nucleus pushing member Z24 is lowered. However, the second cam Z4 may be engaged at other times. Good. Further, the nucleus pushing member Z24 may be lowered because the second cam Z4 and the second engaging member Z26 are not engaged. Moreover, the structure which can adjust the position of the 2nd cam Z4 is preferable. With such a configuration, by adjusting the position of the second cam Z4, the position of the lower end surface Z241 of the core pushing member Z24 in the mortar hole 4 can be adjusted. Specifically, by moving the second cam Z4 in the radial direction of the transfer disk Z1, the engagement state of the second engagement member Z26 with the second cam Z4 changes. And the position in the mortar hole 4 of the lower end surface Z241 of the nucleus pushing member Z24 changes. That is, when the second cam Z4 is moved outward in the radial direction of the transfer disk Z1, the lower end surface Z241 of the nucleus pushing member Z24 is lowered downward in the mortar hole 4 before the movement. Further, when the second cam Z4 is moved inward in the radial direction of the transfer disk Z1, the lower end surface Z241 of the nucleus pushing member Z24 rises upward in the mortar hole 4 from before the movement. Note that the shape of the second cam may be changed.

  Next, as shown in FIG. 9, the safety cam Z5 is provided on the transfer disk Z1, is positioned between the first cam Z3 and the second cam Z4, and engages with the ball plunger Z27 of the transfer member Z2. . In this embodiment, the ball plunger Z27 of the transfer member Z2 and the second cam Z4 are not always engaged. That is, when the transfer member Z2 moves to a position without the second cam Z4 by the plane rotation of the transfer member Z2 together with the transfer disk Z1, normally, the holding member Z22 and the drive member Z23 are centered on the axis Z28 by their own weight. The drive member Z23 is tilted toward the center of the transfer disk Z1 by its own weight. However, when the holding member Z22 does not pivot about the axis Z28, the ball plunger Z27 engages with the safety cam Z5. As a result of the engagement, the holding member Z22 and the drive member Z23 pivot about the axis Z28, and the drive member Z23 tilts toward the center of the transfer disk Z1. Accordingly, the nucleus pressing member Z24 is raised.

  In this embodiment, the safety cam Z5 is integrated with the second cam Z4 as shown in FIG. 9, but it may not be integrated. In the present embodiment, the safety member Z27 of the transfer member Z2 and the second cam Z4 are not always engaged, but may be always engaged.

  Next, as shown in FIGS. 2, 4, and 11, the guide member Z6 is provided on the outer peripheral portion of the transfer disk Z1. As shown in FIG. 11B, a protrusion Z61 is provided on the base end side of the inner peripheral surface of the guide member Z6 at the top of the portion where the core K is located. Thereby, the nucleus K can be prevented from jumping out of the transfer disk Z1 during the transfer of the nucleus K. And since the upper collar 5 descend | falls as it becomes the front end side of the guide member Z6, the said protrusion Z61 is small. The shape in plan view of the distal end side of the inner peripheral surface, which is a part of the inner peripheral side of the guide member Z6, is substantially the same shape as the locus of the mortar hole 4 when the table 31 rotates. That is, the guide member Z6 is formed so that the locus of the nucleus K matches the locus of the mortar hole 4. With this shape, the nucleus K can be guided to the center of the mortar hole 4 in plan view.

  Next, a flow until the nucleus K is supplied from the nucleus supply device Z into the mortar 4 will be described. The transfer disk Z1 that has received the nucleus K from the parts feeder P to the notch Z12 rotates together with the transfer member Z2. And the nucleus K hold | maintained at the transfer disk Z1 moves along the internal peripheral surface of the guide member Z6. Since the distal end side of the inner peripheral surface of the guide member Z6 has a shape along the locus of the mortar hole 4 of the rotating disk 3, the nucleus K is located at a predetermined section in the center of the mortar hole 4 in plan view.

  On the other hand, as shown in FIGS. 6 and 10, since the roll Z25 moves along the shape of the first cam Z3, the transfer member Z2 including the roll Z25 moves along the elongated hole Z11 of the transfer disk Z1 and rotates. The core pushing member Z24 moves along the trajectory of the mortar hole 4 of the board 3. And since the ball plunger Z26 pushes along the shape of the 2nd cam Z4, the holding member Z22 and the drive member Z23 pivot about the axis | shaft Z28, and the nucleus pushing-in member Z24 descend | falls.

  When the nucleus K is located in the center of the mortar hole 4 in plan view, the nucleus pushing member Z24 is lowered and the nucleus K is supplied into the mortar hole 4.

  Next, as shown in FIG. 2 and FIG. 3, the mortar hole 4 supplied with the nucleus K is installed at a position immediately after the nucleus supply position for supplying the nucleus K into the mortar hole 4 from above. The photographing device 19 will be described.

  The photographing device 19 is a camera connected to a control device (not shown) that controls the molding machine. The control device is a microcomputer system provided with a processor, a main memory, an auxiliary storage device, an operation input device (for example, a touch panel, a push button, a keyboard, or the like) serving as a user interface, or a personal computer, a workstation, a PLC, or the like. .

  The imaging device 19 images the mortar 4 passing through the vicinity and transmits the acquired image to the control device. In the memory of the control device, reference image data indicating the mortar hole 4 in a state where the nucleus K is normally inserted is stored in advance. The control device compares the captured image of each mortar 4 provided from the imaging device 19 with the reference image. When the difference between the photographed image and the reference image is small, it is determined that the nucleus K is correctly supplied into the mortar hole 4 where the photographed image is obtained.

  On the other hand, when the difference between the captured image and the reference image is large, it is determined that the nucleus K is not correctly supplied into the mortar 4 where the captured image is obtained. The control device in this case separates and rejects defective molded products molded in the mortar hole 4 from normal molded products. Also, the operation of the molding machine is stopped and an alarm is issued.

  Note that the control device may determine whether or not the center of the nucleus K is at the center of the mortar 4 in plan view, based on the captured image of the imaging device 19.

In addition, the photographing device 19 is an optical sensor, and the control device does not determine whether the nucleus K is in the center of the mortar hole 4 in plan view, but whether the nucleus K is in the mortar hole 4 or not. It may be confirmed by an optical sensor.

  <Second Embodiment> The second embodiment will be described with emphasis on the differences from the first embodiment. The description of the configuration common to the first embodiment is omitted.

  As shown in FIGS. 12 and 13, in the second embodiment, the transfer member Z7 includes a base member Z71, a holding member Z72, and a drive member Z73. The transfer member Z7 includes a holding member Z72 on the base member Z71, and the driving member Z73 is held by the holding member Z73 so as to be slidable up and down.

  The base member Z71 includes a holding member Z72 above the distal end side, a roll Z75 of the first holding portion above the vicinity of the center, and a key member Z79 that fits into the elongated hole Z11 of the transfer disk Z1 below.

  The holding member Z72 has a groove Z721 in the vertical direction to drive the drive member Z73.

  The drive member Z73 is substantially L-shaped and includes a second engagement member roll Z76 on the proximal end side and a nucleus pushing member Z74 on the distal end side. The base end side of the drive member Z73 is fitted in the groove Z721 of the holding member Z72, and is slidable in the vertical direction. Then, when the driving member Z73 slides up and down, the core pushing member Z74 moves up and down.

  As shown in FIG. 13, the second cam Z8 is provided on the transfer disk Z1, is located on the first cam Z3, and engages with the roll Z76 of the drive member Z73. When the second cam Z8 and the roll Z76 are engaged, the driving member Z73 is driven downward, and the core pressing member Z74 is lowered.

  The manufacturing process of the product using the molding machine of this embodiment is as follows.

  <First Embodiment of Manufacturing Process> As shown in FIG. 14, first, (1) the powder is filled into the mortar hole 4 by the filling device X (filling process). Next, (2) the nucleus K is fed into the mortar hole 4 filled with powder by the nucleus feeding device Z (nucleus feeding mechanism). Next, (3) the nucleus K is pushed into the powder in the mortar hole 4 by the nucleus pushing member Z24 (nucleus pushing mechanism). At this time, the lower end surface Z241 of the core pushing member Z24 enters the powder in the mortar hole 4 and the nucleus K is embedded in the powder in the mortar hole 4. Next, (4) the core pushing member Z24 is extracted from the powder in the mortar hole 4. At this time, the powder in the mortar hole 4 enters the space in the powder from which the core pushing member Z24 has been pulled out, and the core K is covered with the powder in the mortar hole 4 (nuclear covering step). Next, (5) the upper punch 5 and the lower punch 6 are pressed by the preloading rolls 12 and 13 to precompress the powder in the mortar hole 4 and further pressed by the main pressure rolls 14 and 15 to be in the mortar hole 4. This powder is subjected to main compression (compression molding process). Next, (6) the lower iron 6 is raised and the molded product including the core K is taken out. As a result, a molded product including the core K formed by compressing the powder is completed.

  With such a manufacturing method, a molded article including the core K can be manufactured with only one filling device. In addition, after filling the mortar hole 4 with powder and supplying the core K into the powder in the mortar hole 4, a molded product including the core K without filling the mortar hole 4 with powder. Can be manufactured.

  Next, an example of a manufacturing process in the case where the upper rod 5 or the lower rod 6 is a double rod will be described. When the upper punch 5 or the lower punch 6 is a double punch, the core supply device Z does not have to enter the lower end surface Z241 of the core pushing member Z24 into the powder of the mortar hole 4. Further, the nuclear supply device Z may not include the nuclear pushing member Z24.

The upper cage 5 or the lower cage 6 that is a double cage is known as described in the pamphlet of WO 2002/090098, and a specific configuration is omitted.
<Second Embodiment of Manufacturing Process> The second embodiment of the manufacturing process is a manufacturing process in which the upper cage 5 is a double cage. Specifically, an upper collar 5 having a central collar 5a and an outer collar 5b is used.

  As shown in FIG. 15, first, (1) the powder is filled into the mortar hole 4 by the filling device X (filling step). Next, (2) the nucleus K is fed into the mortar hole 4 filled with powder by the nucleus feeding device Z (nucleus feeding step). Next, (3) the core K is pushed into the powder of the mortar hole 4 by the center punch 5a of the upper punch 5 (nucleus pushing step). At this time, the lower end surface 5 a 1 of the center rod 5 a enters the powder of the mortar hole 4, and the nucleus K is embedded in the powder of the mortar hole 4. Next, (4) the central punch 5a is pulled out from the powder in the mortar hole 4. At this time, the powder in the mortar hole 4 enters the space in the powder from which the central punch 5a has been pulled out, and the core K is covered with the powder in the mortar hole 4 (nuclear covering step). Next, (5) the upper punch 5 (the central punch 5a and the outer punch 5b) and the lower punch 6 are pressed against the preloading rolls 12 and 13 to precompress the powder in the mortar hole 4, and then the main pressing roll 14 and The powder in the mortar hole 4 is compressed by being pressed by 15 (compression molding process). Next, (6) the lower iron 6 is raised and the molded product including the core K is taken out. As a result, a molded product including the core K formed by compressing the powder is completed.

  Even with such a manufacturing method, a molded product including the core K can be manufactured with only one filling device. In addition, after filling the mortar hole 4 with powder and supplying the core K into the powder in the mortar hole 4, a molded product including the core K without filling the mortar hole 4 with powder. Can be manufactured. And it is preferable that the lower end surface 5a1 of the center rod 5a has the same configuration as the lower end surface Z241 of the core pushing member Z24 in the first embodiment of the manufacturing process.

<Third Embodiment of Manufacturing Process> The third embodiment of the manufacturing process is a manufacturing process in which the lower punch 6 is a double hook. Specifically, the lower rod 6 having a central rod 6a and an outer rod 6b is used.

  As shown in FIG. 16, first, (1) the nucleus K is fed into the mortar 4 by the nucleus feeding device Z (nucleus feeding step). Next, (2) the central rod 6a of the lower rod 6 is raised or the outer rod 6b is lowered, or the central rod 6a is raised and the outer rod 6b is lowered. Next, (3) the powder is filled into the mortar hole 4 by the filling device X (filling step). Next, (4) the upper collar 5 is lowered and compression molded with the central collar 6a of the lower collar 6 (first compression molding process). Next, (5) the center rod 6a is lowered. At this time, a space is formed between the core K and the upper end surface 6a1 of the center rod 6a, and powder enters the space from the surroundings, and the core K is covered with the powder in the mortar 4 (nucleus covering step). . Next, the upper punch 5 and the lower punch 6 (the central punch 6a and the outer punch 6b) are pressed against the preloading rolls 12 and 13 to precompress the powder in the mortar hole 4, and further pressed against the main pressing rolls 14 and 15. Then, the powder in the mortar hole 4 is subjected to main compression (second compression molding step). Next, (6) the lower iron 6 is raised and the molded product including the core K is taken out. As a result, a molded product including the core K formed by compressing the powder is completed.

  Even with such a manufacturing method, a molded product including the core K can be manufactured with only one filling device. In addition, after filling the mortar hole 4 with powder and supplying the core K into the powder in the mortar hole 4, a molded product including the core K without filling the mortar hole 4 with powder. Can be manufactured. And it is preferable that the upper end surface 6a1 of the center rod 6a has the same configuration as the lower end surface Z241 of the core pushing member Z24 in the first embodiment of the manufacturing process.

  In the compression molding process (or the second compression molding process), pre-compression may not be performed.

  The present invention is not limited to the embodiment described in detail above. Although the rotary powder compression molding machine has been described in the present embodiment, a vertical powder compression molding machine may be used. Specifically, when the position of the mortar hole 4 is stationary, the planar view shape of the first cam Z3 is adjusted so that the nucleus pushing member Z24 follows the same locus as the locus of the mortar hole 4 of the rotating disk 3. It is not necessary to use a different shape. Also, the shape of the plan view on the distal end side of the inner peripheral surface of the guide member Z6 does not have to be the same shape as the locus of the die hole 4 in the locus of the nucleus K. Other specific configurations of each part can be variously modified without departing from the spirit of the present invention.

3 ... Rotary plate 4 ... Mortar hole 5 ... Upper punch 6 ... Lower punch K ... Core (nuclear tablet)
Z ... Nuclear supply device Z1 ... Transfer disk (transfer body)
Z2 ... Transfer member Z21 ... Base member Z22 ... Holding member Z23 ... Drive member Z24 ... Nuclear pushing member Z25 ... Roll (first engaging portion)
Z26 ... second engagement member Z27 ... safety member Z3 ... first cam Z4 ... second cam Z5 ... safety cam Z6 ... guide member X ... feed shoe (filling device)

Claims (6)

A table provided with a mortar hole penetrating vertically, a lower arm with the upper end inserted into the mortar and slidable, an upper arm with the lower end inserted into the mortar and slidable, and within the mortar Of a nucleated molded article in a powder compression molding machine provided with a filling device for filling powder, a nucleus supply mechanism for feeding a nucleus into a mortar hole, and a nucleus pushing mechanism having a nucleus pushing member for pushing the nucleus into a mortar hole A manufacturing method comprising:
A filling step of filling powder into the mortar with the filling device;
After the filling step, a nuclear supplying step of supplying a nucleus into the mortar by the nuclear supplying mechanism,
A core pushing step in which the lower end surface of the nucleus pushing member enters the powder of the mortar hole and pushes the nucleus into the mortar hole;
After the core pushing step, the lower end surface of the nucleus pushing member is pulled out from the powder in the mortar hole, and the core covering step in which the nucleus is covered with the powder in the mortar hole;
A method for producing a nucleated molded article in a powder compression molding machine comprising a compression molding step of compressing the powder filled in the mortar hole with the core with the upper and lower punches after the core covering step . A table provided with a mortar hole penetrating vertically, an upper end inserted into the mortar hole and slidable, a central heel and an outer heel covering the side surface of the central heel, the lower end being a mortar hole Of a nucleated molded article in a powder compression molding machine provided with a slidable upper punch inserted into a die, a filling device for filling powder into the mortar, and a core supply mechanism for supplying the nucleus into the mortar A method,
A filling step of filling powder into the mortar with the filling device;
After the filling step, a nuclear supplying step of supplying a nucleus into the mortar by the nuclear supplying mechanism,
A core pushing step in which the lower end surface of the central punch in the upper punch enters the powder of the mortar hole and pushes the nucleus into the mortar hole;
After the core pushing step, the lower end surface of the central punch is withdrawn from the powder in the mortar hole, and the core covering step in which the nucleus is covered with the powder in the mortar hole;
A method for producing a nucleated molded article in a powder compression molding machine comprising a compression molding step of compressing the powder filled in the mortar hole with the core with the upper and lower punches after the core covering step . A table provided with a mortar hole penetrating vertically, a central ridge and an outer casket covering the side surface of the central ridge, an upper end inserted into the mortar and slidable, and a lower end mortar Of a nucleated molded article in a powder compression molding machine provided with a slidable upper punch inserted into a die, a filling device for filling powder into the mortar, and a core supply mechanism for supplying the nucleus into the mortar A method,
A nuclear supplying step of supplying the nucleus into the mortar by the nuclear supplying mechanism;
After the core supplying step, a filling step of filling the mortar with powder by the filling device;
A first compression molding step of compression molding a part of the powder filled in the mortar with the central punch and the upper punch and the core;
After the first compression molding step, the central punch is lowered, and a core covering step in which the core is covered with powder in the mortar, and
Nucleated molded article in a powder compression molding machine comprising a second compression molding step in which the powder filled in the mortar hole is compressed with the upper and lower punches together with the core after the core covering step. Manufacturing method. The method for producing a nucleated molded article in a powder compression molding machine according to claim 1, wherein a width in a predetermined direction of a lower end surface of the core pushing member is smaller than a width in a predetermined direction of the core. The method for producing a nucleated molded article in a powder compression molding machine according to claim 2 or 3, wherein a width in a predetermined direction of a front end surface of the central rod is smaller than a width in a predetermined direction of the core. 6. The method for producing a nucleated molded article in a powder compression molding machine according to claim 1, wherein the number of the filling devices is one.