JP5922376B2 - Powder compression molding machine and lubricant supply method - Google Patents

Description

  The present invention relates to a powder compression molding machine that compresses powder as a raw material to produce a molded product such as a tablet, food, or electronic component.

  Conventionally, in this type of powder compression molding machine, by injecting lubricating oil between the heel and the heel holding portion that holds the heel up and down, the friction between the heel and the heel holding portion is reduced, A technique for avoiding the occurrence of scratches due to friction and the fact that the temperature of the wrinkles becomes too high is known (for example, see Patent Document 1).

  However, if the amount of lubricating oil supplied is too large, the lubricant or a mixture of lubricant and powder falls from the upper eyelid holding part. And the malfunction that they mix in a molded product and impair the quality of a molded product arises.

  In Patent Document 1, the lubricating oil reduces friction between the ridge and the heel holding portion through the oil feed hole, the oil groove, and the oil drain hole. However, the oil seal alone cannot prevent the mixture of the powder between the upper heel holding portion and the upper heel and the leakage of the lubricating oil, and the above-described problem occurs. For example, when a deformed tablet such as an elliptical tablet is formed, a scissor having a key for preventing rotation is generally used in the scissor holding part (see JP-A-5-84277). However, in the configuration of Patent Document 1, when such a kite is used, the kite does not rotate, so the lubricating oil does not spread around the entire trunk of the kite. For this reason, defects such as damage and seizure between the heel and the heel holding portion due to friction occur.

  Also, generally, when the kite is attached to the kite holding part, a highly viscous lubricating oil (grease) may be applied around the drum trunk. However, even in this case, problems such as seizure occur if the lubricating oil is not applied for a long time. In order to prevent this, lubricating oil must be applied around the trunk of the bag every time a certain time elapses, and there is a problem in work efficiency. In addition, there is a possibility of forgetting to apply the lubricating oil, in which case the above-described problems occur.

Japanese Patent Laid-Open No. 51-66570

  The present invention pays attention to the above-described points, and provides a powder compression molding machine in which the supply amount of the lubricant can be suppressed, and damage and temperature increase due to friction at the contact portion between the heel and the heel can be suppressed. The purpose is to provide.

  The powder compression molding machine according to the present invention includes a fitting insertion portion that is inserted into a heel holding hole provided in the heel holding portion so as to be vertically movable, and a tip portion that can compress powder in a mortar hole to which powder is supplied. And a lubricant supply mechanism for supplying a lubricant, and the lubricant supplied from the lubricant supply mechanism is located on the base end side of the heel holding portion and the heel and can reach the heel. A lubricant spraying mechanism for spraying at least one of them, or a lubricant dropping mechanism for dropping.

  Further, the lubricant supply method according to the present invention can compress the powder in the mortar hole into which the powder is supplied, and the insertion portion that is movably inserted into the heel holding hole provided in the heel holding portion. A scissor having a tip part, a lubricant supply mechanism for supplying a lubricant, and the lubricant supplied from the lubricant supply mechanism can reach the scissors on the base end side of the scissor holding part and the scissors. In this method, the lubricant is supplied using a powder compression molding machine provided with a lubricant spraying mechanism for spraying at least one of the positions or a lubricant dropping mechanism for dropping.

  Here, the “position that can reach the heel” is not limited to the mode in which the lubricant is sprayed directly on the heel, but the heel holding section (upper heel holding section or lower heel holding section) and heel (upper heel or lower heel) Is a concept including each component (compression roll, ascending cam, descending cam, lowering device, push-up rail, guide rail, etc., which will be described later) provided on the base end side of the kite relative to the kite holding part. . Further, the base end side of the ridge means the opposite side of the tip end portion of the ridge that compresses and forms the powder.

  The supply amount of the lubricant can be suppressed by spraying or dripping the lubricant. Therefore, the lubricant or a mixture of the lubricant and the powder does not fall and mix into the molded product. Further, by spraying or dripping the lubricant, a small amount of the lubricant can be spread over the entire portion where the friction occurs, so that damage to the wrinkles and the contact portion of the wrinkles due to the friction and an increase in temperature can be suppressed. Specifically, the lubricant is sprayed or dripped not only on the heel but also on the parts that come into contact with the heel, such as compression rolls, ascending cams, descending cams, lowering machines, push-up rails, or guide rails. By reducing the friction, damage and temperature rise due to friction of the heel and the contact portion of the heel are suppressed. In addition, even with a heel (upper heel or lower heel) provided with a key for preventing rotation within the heel holding portion (upper heel holding portion or lower heel holding portion), by spraying the lubricant, Since the lubricant is supplied to this, problems such as damage due to friction, temperature rise, and seizure do not occur. And since the supply amount of the lubricant is small, the lubricant or a mixture of the powder and the lubricant does not fall from the upper eyelid holding portion.

  The lubricant is preferably sprayed from at least two directions rather than sprayed from one direction. Moreover, although it is possible also by dripping, spraying is more effective because a small amount of lubricant can be spread over a wide range.

In addition, as an example of a structure in which the lubricant is suitably sprayed, a gas supply mechanism that supplies a gas for mixing with the lubricant is further provided, and the lubricant spraying mechanism includes the gas supplied from the gas supply mechanism, the lubricant, and the like. The structure provided with the mixing part which mixes, and the lubricant spraying part which sprays the gas and lubricant which were mixed by this mixing part is mentioned. By mixing the lubricant and a gas such as air or nitrogen in the mixing portion, the lubricant is refined and sprayed from the lubricant spraying portion.
Moreover, it is preferable that the lubricant supply mechanism includes a lubricant discharge unit that discharges a predetermined amount of the lubricant stored in the lubricant storage unit per unit time. Furthermore, what is provided with the lubricant storage means which stores the said lubricant for supply is more preferable.

  A configuration in which the lubricant spraying mechanism or the lubricant dropping mechanism sprays the lubricant from the base end side of the heel to the heel holding hole or from the heel holding hole to the fitting insertion portion exposed to the base end side can be mentioned. .

  Further, as one of the methods for supplying the lubricant according to the present invention, the lubricant spray mechanism or the lubricant dropping mechanism may remove the lubricant from the base end side of the heel to the heel holding hole or from the heel holding hole to the base end of the heel. The method of supplying toward the fitting insertion part exposed to the side is mentioned. Thereby, a lubricant spreads efficiently over the whole insertion part of a collar.

  In particular, in order to effectively suppress friction due to the force applied to the ridge, the lubricant spray mechanism or the lubricant dropping mechanism has a lubricant on the pressing portion of the compression roll that presses the ridge when the ridge compresses the powder. It is preferable that the composition is sprayed or dropped.

  In addition, as one of the lubricant supply methods according to the present invention, the lubricant spray mechanism or the lubricant dropping mechanism supplies the lubricant to the pressing portion of the compression roll that presses the ridge when the ridge compresses the powder. The method of doing is mentioned. Thereby, friction due to force applied to the heel can be effectively suppressed.

  On the other hand, if the lubricant spray mechanism or the lubricant dropping mechanism supplies the lubricant to at least one of the guide means for guiding the rising operation of the soot and the guide means for guiding the descending operation, Friction that occurs during the lifting and lowering operation is effectively suppressed. Here, the guiding means refers to any component that determines the position and operation of the ridge separately from the ridge holding section during the operation of the powder compression molding machine. Examples of the guide means include an ascending cam, a descending cam, a lowering device, a push-up rail, and a guide rail, which will be described later.

  Further, as one of the lubricant supply methods according to the present invention, the lubricant spray mechanism or the lubricant dripping mechanism is at least one of a guide means for guiding the raising operation of the soot and a guide means for guiding the lowering action. One method includes supplying a lubricant to either of them. Thereby, the friction which generate | occur | produces at the time of the raising / lowering operation | movement of a kite is suppressed effectively.

  Here, the powder in the present invention is a collection of minute solids, and includes a collection of granules such as so-called granules and a collection of powder having a shape smaller than the granules. .

  According to the present invention, there are effects that the supply amount of the lubricant is suppressed, and damage and temperature rise due to friction at the contact portion between the heel and the heel are suppressed. This also has the effect of improving cleanability.

The external view of the principal part of the powder compression molding machine which concerns on one Embodiment of this invention. The front view of the principal part which concerns on the same embodiment. Action explanatory drawing which concerns on FIG. The external view of the principal part which concerns on the same embodiment. Action | operation explanatory drawing which concerns on the same embodiment. The typical explanatory view showing the modification of the embodiment and the embodiment. The typical explanatory view concerning one modification of the embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  A rotary powder compression molding machine (hereinafter referred to as a powder compression molding machine) 1 according to the present embodiment schematically shows a main part in FIG. 1 and a series of operations in FIG. In addition, a vertical shaft, which is a rotating shaft, is rotatably arranged in a frame (not shown), and a turntable 7 is attached to the vertical shaft. The disk surface of the rotating disk 7 has a disk shape, and a plurality of mortars having cylindrical mortar holes 70 are attached at predetermined intervals in the circumferential direction in the vicinity of the outer periphery thereof. On the turntable 7, an upper heel holding portion 2 for holding an upper heel 3 provided so as to be movable in the vertical direction and a mortar having a mortar hole 70 are attached above the portion where the mortar having the mortar hole 70 is attached. A lower collar holding portion 2U that holds the lower collar 3U so as to be movable in the vertical direction is provided on the lower side of the portion. That is, a pair of upper and lower armpits 3 and 3U is provided for each of the mortars having respective mortar holes 70. The tip 33 of the tip of the upper heel 3 enters and exits the mortar hole 70, and the heel of the lower heel 3 </ b> U is always inserted into the mortar hole 70.

  Here, in the powder compression molding machine 1 according to the present embodiment, an insertion insertion portion 32 that is inserted into an upper eyelid holding hole 21 provided in the upper eyelid holding portion 2 so as to be vertically movable and a die to which powder is supplied. The upper rod 3 having a tip 33 capable of compressing the powder in the hole 70, the lubricant supply mechanism 4 for supplying the lubricant, and the lubricant supplied from the lubricant supply mechanism 4 for supplying the lubricant to the upper rod holder 2 And a lubricant spraying mechanism 5 that sprays at least one of the positions that are on the base end side of the upper rod 3 and can reach the rod.

  The lubricant supply method according to the present embodiment is such that the lubricant is directed from the base end side of the upper rod 3 toward the flange holding hole 21 or the fitting insertion portion 32 exposed from the flange holding hole 21 to the proximal end side. Spray.

  In the present embodiment, the gas supplied by the gas supply mechanism 6 is air. Since the gas supply mechanism 6 is a normal one using an existing pump or the like, detailed illustration and description are omitted in this embodiment. Further, the gas supplied by the gas supply mechanism 6 is not limited to air but may be nitrogen or the like.

  Hereinafter, a configuration of the powder compression molding machine 1 according to the present embodiment and a method for supplying a lubricant using the powder compression molding machine will be described. Further, in FIG. 1, for convenience of explanation, a part of the upper hook 3 held by the upper hook holding part 2 is omitted.

  As shown in FIG. 1, the upper collar holder 2 supports an upper collar 3 having a key 34 for preventing rotation so as to be movable up and down. The upper heel holding portion 2 has an upper heel holding hole 21 for holding the upper heel 3 and an inclined surface 22 inclined downward from the upper heel holding hole 21 inward and outward. Further, a lubricant absorbing portion 23 is provided between the upper heel holding holes 21. The upper collar holding hole 21 is formed in accordance with the shape of the upper collar 3 in plan view, and can have a different shape corresponding to the shape of the upper collar 3. The inclined surface 22 inclines downward around the upper collar holding hole 21 on the upper surface of the upper collar holding section 2 holding the upper collar 3 as the distance from the edge of the upper collar holding hole 21 increases in the horizontal direction. . Thereby, it is possible to prevent the lubricant from flowing into the upper rod holding hole 21 and falling from the upper rod holding hole 21 onto the rotating disk surface. This is particularly effective when the lubricant is a fluid. This configuration is effective because the inertial force is small when the rotational speed of the turntable 7 is small. The lubricant absorbing portion 23 has a lubricant absorbing portion 23 that can absorb the lubricant around the upper collar holding hole 21 on the upper surface of the upper collar holding section 2 that holds the upper collar 3. Specifically, the lubricant absorbing portion 23 is a sheet that can absorb and hold excess lubricant supplied between the upper collar holding holes 21. The material constituting the lubricant absorbing portion 23 is not particularly limited. For example, a material such as polyvinyl alcohol, polyester nonwoven fabric, felt, or cellulose is suitable as the lubricant absorbing portion 23.

  In the present embodiment, an existing one having a key 34 for preventing rotation is applied to the upper collar 3 as in the lower collar 3U. The flange 3 is schematically shown in FIG. 6, a proximal-side head 31 positioned farthest from the surface of the turntable 7, a fitting insertion portion 32 in contact with the inner surface of the upper flange holding hole 21. And a tip portion 33 of the tip for compressing and molding the powder.

  The lubricant supply mechanism 4 accurately supplies a predetermined amount of lubricant at a predetermined time. As shown in FIG. 2, the lubricant supply mechanism 4 includes a lubricant tank 41, a syringe 42, a piston rod 43, a three-way valve 44, a discharge port 45, and moves the lubricant from the discharge port 45. A pair of lubricant tubes 49 are provided. The lubricant supply mechanism 4 includes a slider 46 that collectively supports a pair of piston rods 43, a slider holding portion 47 that supports the slider 46 so as to be movable up and down by, for example, a screw feed mechanism, and the slider. And a motor 48 that supplies a driving force to the holding portion 47.

  The lubricant supply mechanism 4 includes a lubricant storage unit that stores a lubricant to be supplied, and a lubricant discharge unit that discharges a predetermined amount of the lubricant stored by the lubricant storage unit per unit time. The means corresponds to a syringe 42, and the lubricant discharge means corresponds to a piston rod 43, a slider 46, a slider holding portion 47, and a motor 48.

  The lubricant tank 41 stores the lubricant and is connected to the three-way valve 44 at the lowermost part, and supplies the lubricant to the syringe 42 as necessary. In the present embodiment, the lubricant is a fat and oil having a predetermined composition that is safe even if eaten by a person. The syringe 42 is for storing a certain amount of lubricant. The syringe 42 slidably accommodates one end side of the piston rod 43 therein and is connected to the three-way valve 44 at the upper end. The piston rod 43 is supported at one end by the slider 46 and accommodated in the syringe 42 at the other end. The slider 46 supports one end side of the piston rod 43 so as to be movable up and down. The slider 46 operates upward when spraying the lubricant in the syringe 42, and supplies the lubricant in the lubricant tank 41 to the syringe 42. Operates downward. The slider holding part 47 has a structure in which an operation conversion part (not shown) for converting the rotational driving force from the motor 48 into the vertical movement of the slider 46 by a screw feed mechanism is built. Note that the slider 46 may be operated by another existing configuration. The motor 48 uses a stepping motor in this embodiment, but may be an AC servo motor or a DC servo motor. In the present embodiment, the stepping motor is accurately controlled by a control device (not shown) such as the spraying time and the spraying amount, so that a predetermined amount of lubricant can be stably supplied within a predetermined time.

  The lubricant supply mechanism 4 supplies, for example, 0.02 ml of lubricant per second from the syringe 42 to the lubricant spray mechanism 5 during normal powder compression. Specifically, as shown in FIG. 2, the motor 48 is driven in a state where the direction of the three-way valve 44 is adjusted and the syringe 42 and the discharge port 45 are in communication. The drive of the motor 48 raises the slider 46 at a predetermined speed through the operation conversion of the slider holding portion 47. As a result, the piston rod 43 whose one end is fixed to the slider 46 rises, the lubricant in the syringe 42 is pushed out from the discharge port 45, and is supplied to the lubricant spray mechanism 5 through the lubricant tube 49.

  On the other hand, when the slider 46 is positioned at the upper operating end, the lubricant in the syringe 42 is substantially cut off. In this case, the lubricant is supplied from the lubricant tank 41 to the syringe 42. Specifically, as shown in FIG. 3, the lubricant tank 41 and the syringe 42 communicate with each other by adjusting the direction of the three-way valve 44. In the present embodiment, the direction of the three-way valve 44 is automatically switched. Then, the slider 46 is lowered via the slider holding portion 47 by driving the motor 48 in the opposite direction. As a result, the piston rod 43 is lowered, and a part of the lubricant in the lubricant tank 41 is sucked into the syringe 42. When the slider 46 reaches the lower operating end, a lubricant that substantially fills the syringe 42 with a capacity of, for example, 4 ml is supplied into the syringe 42, and the lubricant can be sprayed again as shown in FIG. That is, for example, if the turntable 7 rotates 10 times per minute, the lubricant is sprayed for 6 seconds, so that the lubricant is sprayed on the entire trunk of each upper collar 3 in the upper collar holder 2. Is done. By setting the control device so that a predetermined amount of lubricant is sprayed again after a predetermined time has elapsed, the amount of lubricant sprayed is controlled. Therefore, the amount of the lubricant can be suppressed to a small amount. The lubricant supply mechanism 4 can also be used as a lubricant dropping mechanism.

  Thus, the powder compression molding machine 1 according to this embodiment, as described above, sprays the lubricant supplied from the lubricant supply mechanism 4 onto the base end sides of the upper hook holding portion 2 and the upper hook 3. A mechanism 5 is provided.

  As shown in FIGS. 1 and 4, the lubricant spraying mechanism 5 includes a support 51 fixed in the vicinity of the guide rail G, a pair of mixing portions 52 fixed to the support 51, and a mixing portion 52. And a lubricant spray section spray nozzle 53 attached to the tip. The support body 51 is fixed around the guide rail G with bolts. By installing the lubricant spraying mechanism 5 in the vicinity of the guide rail G, the proximal end side of the upper flange 3 is directed toward the flange holding hole 21 or the fitting insertion portion 32 exposed from the flange holding hole 21 to the proximal end side. Lubricant is sprayed. The mixing part 52 is a part connected to the air tube 69 and the lubricant tube 49 in the upper part and connected to the spray nozzle 53 in the lower part, and the air pipe 69a and the lubricant pipe 49a are joined inside to mix air and lubricant. And mix. The spray nozzle 53 which is a lubricant spraying part is for spraying the air and lubricant mixed in the mixing part 52. In this embodiment, the lubricant sprayed from the tip of the spray nozzle 53 is from the upper eyelid holding part 2. It sprays toward the fitting insertion part 32 of the exposed upper eyelid 3. As a result, the lubricant is supplied over a wide range with respect to the upper collar 3, so that the smooth operation of the upper collar 3 is ensured with a small amount of lubricant. Further, even when the upper collar 3 having the key 34 is sprayed on the insertion portion 32 and the key 34, a smooth operation is ensured with a small amount of lubricant. The lubricant pipe 49a is provided with a valve (not shown) for preventing the back flow of the lubricant. This prevents the lubricant from flowing back through the lubricant tube 49a.

  In this embodiment, air and lubricant are mixed and sprayed (two fluids), but the lubricant may be sprayed from a spray nozzle having a plurality of holes (one fluid). . In the present embodiment, the mixing of air and lubricant is internal mixing mixed in the mixing unit 52, but may be external mixing mixed when spraying. Further, the nozzle shape and spraying method may be any. For example, a part of the lubricant is forcibly swirled inside the nozzle, and the remaining lubricant is made to advance straight in the nozzle. In addition, the lubricant may be vibrated by an ultrasonic oscillator or the like, and the lubricant may be atomized and sprayed.

  The lubricant spray mechanism 5 is installed on a preload roll (YR, UYR), a main pressure roll (HR, UHR), an ascending cam J, a descending cam K, a lowering device T, or a push-up rail OR. The ascending cam J, the descending cam K, the lowering device T, or the push-up rail OR may be installed immediately before that. Moreover, as shown in FIG. 7, the structure which inserts the spray nozzle 53 in a cam may be sufficient. Such a configuration is also used in the lubricant dropping mechanism.

  As shown in FIG. 5, in this embodiment, the lubricant collected on the upper heel holding portion 2 by the sprayed lubricant is prevented from entering the upper heel holding hole 21 as much as possible. More specifically, first, the upper surface of the upper heel holding portion 2 is formed with an inclined surface 22 that gradually inclines downward from the edge of the upper heel holding hole 21 in the horizontal direction. Thereby, the sprayed lubricant accumulates on the outer peripheral edge and the inner peripheral edge of the upper heel holding part 2, respectively. However, when the number of rotations of the turntable 7 within a predetermined time is large, the lubricant flows to the outer peripheral edge due to inertial force and does not accumulate on the inner peripheral edge. Therefore, this configuration is effective when the number of rotations of the turntable 7 within a predetermined time is small. A lubricant absorbing portion 23 is provided between the upper collar holding holes 21. As a result, the lubricant sprayed between the upper rod holding holes 21 is absorbed by the lubricant absorbing portion 23 and does not enter the upper rod holding holes 21 as oil droplets. Thus, in this embodiment, the trouble that the lubricant accumulated in the liquid enters the mortar hole 70 from the upper punch holding hole 21 is effectively avoided. Such a configuration is also used in the lubricant dropping mechanism.

  With the above-described configuration, according to the powder compression molding machine 1 and the lubricant supply method according to the present embodiment, the amount of lubricant supplied can be suppressed, and the friction between the heel and the heel contact portion can be reduced. Damage and temperature rise due to

  Further, in the present embodiment, the structure for spraying the lubricant suitably further includes a gas supply mechanism that supplies a gas for mixing with the lubricant, and the lubricant spray mechanism 5 lubricates the gas supplied from the gas supply mechanism. The structure provided with the mixing part 52 which mixes an agent, and the spray nozzle 53 for spraying the gas mixed by this mixing part 52 and a lubricant is applied.

  In the present embodiment, the lubricant spray mechanism 5 directs the lubricant from the base end side of the upper collar 3 toward the upper collar holding hole 21 or the fitting insertion portion 32 exposed from the upper collar holding hole 21 to the proximal end side. It is supposed to be sprayed. As a result, the lubricant is sprayed from the proximal end located far from the mortar hole 70 in the upper heel holding part 2, and the problem of the lubricant falling to the mortar hole 70 is avoided. .

  In the embodiment described above, the lubricant spraying mechanism 5 is disposed so as to spray the lubricant at the position of the guide rail G with respect to the upper rod 3. Of course, the lubricant spraying mechanism 5 is as shown in FIG. It can be installed at each location. In other words, as shown in FIG.

  As shown in FIG. 6, the upper rod 3 is rotated by a rotating disk 7 together with the upper rod holding portion 2, for example, and the guide rail G, the descending cam K, the preloading roll YR, the main guides according to the present invention. It passes through the pressure roll HR and the rising cam J and is guided. Specifically, the upper punch 3 presses the upper guide 3 to compress the filled powder, the guide rail G held upward at the time of powder filling, the lowering cam K that gradually lowers when the powder is compressed. The preload roll YR, the main pressure roll HR, and the ascending cam J retracted upward after powder compression are guided.

  On the other hand, the lower rod 3U passes through, for example, a lowering device T, a lower guide rail UG, a lower preload roll UYR, a main pressure roll UHR, and a push-up rail OR, each of which is a guide means according to the present invention, by rotating operation of the turntable 7. And guided. Specifically, the lower punch 3U includes a lowering device T that descends during powder filling, a lower guide rail UG that is positioned at a predetermined position from powder filling to compression, and powder filled during powder compression. A lower preload roll UYR that is pressed to compress, a lower main pressure roll UHR that is further pressed to mold the powder compressed by the preload roll UYR, and the molded product is removed from the mortar hole 70 to take out the molded product. It passes through the push-up rail OR to be pushed out and guided.

  That is, the lubricant spray mechanism 5 of the powder compression molding machine 1 according to the present invention uses the lubricant supplied from the lubricant supply mechanism 4 as the upper heel holding portion 2, the lower heel holding portion 2U, the upper heel 3 and the lower heel 3U. And spray to at least one of the positions that can reach the upper eyelid 3 or the lower eyelid 3U.

  In addition, as shown in the figure, the method of supplying the lubricant according to the present invention lubricates the pressing portion of the preloading roll YR or the main pressure roll HR, which is a compression roll that presses the upper punch 3 when the upper punch compresses the powder. Spray the agent. In this supply method, the lubricant is sprayed on at least one of the ascending cam J serving as guide means for guiding the ascending motion of the upper rod 3 and the descending cam K serving as guide means for guiding the descending operation. In this supply method, the lubricant is sprayed on at least one of the lowering device T that guides the lowering operation of the lower rod 3U and the lifting rail OR that guides the lifting operation.

  FIG. 7 shows that the lubricant spray mechanism 5 sprays the lubricant toward the head 31 of the upper collar 3 that is in the middle of ascending by the ascending cam J that is a guiding means after passing through the preload roll YR and the main pressure roll HR. This is a modification example set as described above. Thus, the through-hole Jb is provided in two places on both sides of the rising cam J, and the spray nozzle 53 is attached to the through-hole. As a result, the lubricant is sprayed onto the head 31 of the upper eyelid 3 that is being raised by the cam surface Ja. Such a configuration is also used in the lubricant dropping mechanism.

  Although the embodiment of the present invention has been described above, the specific configuration of each unit is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Other examples of the lubricant supply mechanism include a dispenser. An example of the lubricant dropping mechanism is a mechanism in which a lubricant is supplied by applying a voltage using a piezoelectric element.

  Further, individual specific aspects such as the shape of the ridge and the amount of powder to be compressed are not limited to those of the above-described embodiment, and various aspects including the existing ones can be applied.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Powder compression molding machine 2 ... Upper hook holding part 21 ... Hook holding hole 3 ... Upper hook 32 ... Insertion part 33 ... Tip part 4 ... Lubricant supply mechanism 5 ... Lubricant spray mechanism 52 ... Mixing part 53 ... Lubrication Spray section (spray nozzle)
6 ... Gas supply mechanism 2U ... Lower iron holder 3U ... Lower iron YR ... Compression roll (preload roll)
HR ... Compression roll (main pressure roll)
UYR ... Compression roll (lower preload roll)
UHR ... Compression roll (Lower pressure roll)
G ... Guiding means (guide rail)
K ... Guiding means (descent cam)
J ... Guide means (ascending cam)
T ... Guiding means (lowering device)
UG ... Guiding means (lower guide rail)
OR ... Guide means (push-up rail)

Claims (9)

A powder compression molding machine provided with a rivet having a fitting portion that is movably inserted into a heel holding hole provided in the heel holding portion and a tip portion that can compress powder in a mortar hole to which powder is supplied. There,
A lubricant supply mechanism (4) for supplying a lubricant;
A lubricant spraying mechanism (5) for spraying the lubricant supplied from the lubricant supply mechanism to at least one of the heel holding portion and the base end side of the heel, and a position where the lubricant can reach the heel; A powder compression molding machine. A powder compression molding machine provided with a rivet having a fitting portion that is movably inserted into a heel holding hole provided in the heel holding portion and a tip portion that can compress powder in a mortar hole to which powder is supplied. There,
A lubricant supply mechanism (4) for supplying a lubricant;
A lubricant spray mechanism (5) for spraying the lubricant supplied from the lubricant supply mechanism,
A powder compression molding machine in which the lubricant spraying mechanism supplies the lubricant to a pressing portion of a compression roll that presses the ridge. A powder compression molding machine provided with a rivet having a fitting portion that is movably inserted into a heel holding hole provided in the heel holding portion and a tip portion that can compress powder in a mortar hole to which powder is supplied. There,
A lubricant supply mechanism (4) for supplying a lubricant;
A lubricant spray mechanism (5) for spraying the lubricant supplied from the lubricant supply mechanism,
A powder compression molding machine in which the lubricant spraying mechanism supplies the lubricant to at least one of guide means for guiding the upward movement of the rod and guide means for guiding the downward movement. A gas supply mechanism (6) for supplying a gas for mixing with the lubricant;
The lubricant spray mechanism is a mixing section (52) for mixing the gas supplied from the gas supply mechanism and the lubricant;
The powder compression molding machine according to claim 1, 2 or 3, further comprising a lubricant spraying part (53) for spraying the gas mixed with the mixing part and the lubricant. 5. The powder compression molding machine according to claim 1, wherein the lubricant supply mechanism includes a lubricant discharge means for discharging a predetermined amount of lubricant per unit time. The lubricant spray mechanism supplies the lubricant from the base end side of the heel toward the heel holding hole (21) or the fitting insertion portion (32) exposed from the heel holding hole to the base end side. The powder compression molding machine according to any one of claims 1 to 5. A powder compression molding machine provided with a rivet having a fitting portion that is movably inserted into a heel holding hole provided in the heel holding portion and a tip portion that can compress powder in a mortar hole to which powder is supplied. There,
A lubricant supply mechanism (4) for supplying a lubricant;
A lubricant dropping mechanism (5) for dropping the lubricant supplied from the lubricant supply mechanism,
A powder compression molding machine in which the lubricant dropping mechanism supplies the lubricant to a pressing portion of a compression roll that presses the ridge when the ridge compresses the powder. A powder compression molding machine provided with a rivet having a fitting portion that is movably inserted into a heel holding hole provided in the heel holding portion and a tip portion that can compress powder in a mortar hole to which powder is supplied. A lubricant spraying mechanism that is a device to be configured,
The pressing part of the compression roll that sprays the lubricant supplied from the lubricant supply mechanism to at least one of the heel holding part and the base end side of the heel and can reach the heel, and presses the heel Or a lubricant spray mechanism for supplying to at least one of guide means for guiding the raising operation of the bag and guide means for guiding the lowering action . A powder compression molding machine provided with a rivet having a fitting portion that is movably inserted into a heel holding hole provided in the heel holding portion and a tip portion that can compress powder in a mortar hole to which powder is supplied. A lubricant dripping mechanism that is a device to be configured,
A lubricant dropping mechanism that supplies a lubricant supplied from a lubricant supply mechanism to a pressing portion of a compression roll that presses the ridge when the ridge compresses the powder .

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