JP2016198795A - Press device and rotary press board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a load in the rod falling direction from being imparted to the rod.SOLUTION: A press device 100 for successively pressing a plurality of upper rods 40 and a plurality of lower rods 50 for successively passing through a press position P in the press position P, comprises: an upper wheel 101 rotatably provided around the central axis on the upper side of the press position P; a plurality of upper press rollers 102 installed in the upper wheel 101 so as to be arranged along the circumferential direction around the central axis of the upper wheel 101 and brought into pressure contact with head parts of upper ends 43 of the upper rods 40; a lower wheel 106 rotatably provided around the central axis on the lower side of the press position P; and a plurality of lower press rollers 107 installed in the lower wheel 106 so as to be arranged along the circumferential direction around the central axis of the lower wheel 106 and brought into pressure contact with head parts of lower ends of the lower rods.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a pressing device that presses a powder struck between an upper punch and a lower punch through the upper punch and the lower punch, and also relates to a rotary press disk used in the press device.

  Patent Document 1 discloses a powder compression molding apparatus that solidifies a powder by compressing it using a mortar, an upper punch, and a lower punch. There are a plurality of mortars, upper punches, and lower punches, and a plurality of mortars, upper punches, and lower punches are assembled on a rotating disk that rotates around the vertical axis. Specifically, a plurality of upper collars are attached to the outer peripheral portion of the upper part of the rotating disk so as to be arranged at equal intervals in the circumferential direction, and these upper collars are provided so as to be individually movable up and down. Similarly to the case of the upper rod, a plurality of lower rods that can be raised and lowered are attached to the lower portion of the rotating disk so as to be arranged at equal intervals in the circumferential direction. Further, the mortars are attached to the intermediate portion in the height direction of the rotating disk so as to be arranged at equal intervals in the circumferential direction. A powder supply device and a pair of upper and lower pressure rolls are disposed around the rotating disk. During rotation of the rotating disk, when the mortar passes through the powder supply device, the powder is supplied to the mortar by the powder supply device, and thereafter, the mortar, the upper punch and the lower punch are placed between the pair of pressure rolls. When passing, the upper punch and the lower punch are sandwiched between a pair of pressure rolls, and the powder in the die is compressed by the upper punch and the lower punch.

  These pressure rolls are provided so as to be rotatable around respective horizontal central axes, and the intervals between the pressure rolls are kept constant. The upper collar is pressed against the upper pressure roll, the lower collar is pressed against the lower pressure roll, and these pressure rolls are rotated by the movement of the upper collar and the lower collar.

Japanese Patent No. 5448501

Here, FIG. 13 shows the movement of the head of the upper collar and the upper pressure roll when the upper collar and the lower collar pass between the pair of pressure rolls. In FIG. 13, it is assumed that the upper eyelid 200 moves from left to right and the pressure roll 202 rotates counterclockwise. As shown in FIG. 13, before the upper collar 200 reaches the lowermost portion 203 of the outer circumferential surface of the pressure roll 202 (see arrow T), the upper collar 200 moves from the lowermost portion 203 of the outer circumferential surface of the pressure roll 202. Touch the displaced position. The pressure roll 202 rotates following the movement of the upper eyelid 200.
Therefore, when the upper collar 200 is pressed against the pressure roll 202, a lateral load acts on the upper collar 200 due to friction between the upper collar 200 and the pressure roll 202. Such a load gives stress to the apparatus and adversely affects the solidification of the powder.
Similarly, before the lower iron reaches the lowermost part of the outer peripheral surface of the lower pressure roll, the lower iron contacts the lower pressure roll, and the lower pressure is applied by the movement of the lower iron. The roll rotates and a similar lateral load acts on the lower arm.

  Therefore, the present invention has been made in view of the above circumstances. The problem to be solved by the present invention is to prevent lateral loads from being applied to the bag.

In order to solve the above-described problems, a press device that sequentially presses a plurality of upper eyelids that sequentially pass through a predetermined press position and a plurality of lower eyelids below them at the press position rotates above the press position. An upper wheel provided in a possible manner, a plurality of upper press-contact portions that are attached to the upper wheel so as to be arranged along a circumferential direction of the upper wheel, and that press-contact the head of the upper end of the upper collar, and the press A lower wheel rotatably provided at a lower side of the position, and a plurality of lower parts that are attached to the lower wheel so as to be arranged along a circumferential direction of the lower wheel and are in pressure contact with a lower end head portion of the lower collar A pressure contact portion.
In order to solve the above-described problems, the rotary press machine includes a rotatable wheel and a pressure contact portion that is attached to the wheel at a position shifted from the central axis of the wheel and presses against the head of the rod that strikes the powder with the tip. And comprising.

Therefore, when the upper wheel and the lower wheel rotate, the upper press contact portion and the lower press contact portion turn, and the upper press contact portion and the lower press contact portion draw a circular locus. Therefore, immediately before the upper arm passes the press position and the upper pressure contact portion passes the lowermost part, the upper pressure contact portion approaches the head portion of the upper eyelid downward and in accordance with the movement of the head portion of the upper eyelid. Move horizontally. For this reason, the upper pressure contact portion comes into contact with the upper head portion from directly above the upper head portion. Therefore, a lateral load is not applied to the upper eyelid.
Similarly, since the lower pressure contact portion comes into contact with the head of the lower eyelid from directly under the head of the lower eyelid, a lateral load is not applied to the lower eyelid.

Preferably, in the press device, the upper press contact portion is attached to the upper wheel so as to be rotatable about an axis parallel to the central axis of the upper wheel, and the lower press contact portion is attached to the central axis of the lower wheel. It is attached to the lower wheel so as to be rotatable about a parallel axis. More preferably, the upper press contact portion has an outer peripheral surface formed in a cylindrical surface shape around its axis, and the lower press contact portion has an outer peripheral surface formed in a cylindrical surface shape around its axis.
Preferably, the press contact portion is attached to the wheel so as to be rotatable around an axis parallel to the central axis of the wheel. More preferably, the press contact portion has an outer peripheral surface formed in a cylindrical surface around its axis.

  According to the above, when the upper collar passes through the press position, the upper pressing section that is in pressure contact with the head section of the upper casing rotates so that no slip occurs between the upper pressing section and the upper casing head. . Therefore, the load in the direction in which the upper eyelid falls is not applied to the upper eyelid. The same applies to the lower collar and the lower press-contact portion.

  Preferably, the press device further includes an upper elastic member and a lower elastic member, and the upper pressure contact portion is attached to the upper wheel so as to be movable in a direction parallel to a central axis of the upper wheel. An elastic member holds the upper press-contact portion against movement of the upper press-contact portion, and the lower press-contact portion is movable in a direction parallel to the central axis of the lower wheel and is attached to the lower wheel. The lower elastic member holds the lower press-contact portion against movement of the lower press-contact portion.

According to the above, when the trajectory when the upper and lower eyelids pass through the press position is a curve, the upper pressure contact portion that is in pressure contact with the head portion of the upper eyelid moves in the axial direction, thereby No slip occurs between the head of the heel. Therefore, the load in the direction in which the upper eyelid falls is not applied to the upper eyelid. The same applies to the lower collar and the lower press-contact portion.
Further, after the upper pressure contact portion moves in the axial direction, the upper pressure contact portion returns to the original position by the elastic force of the upper elastic member. The same applies to the lower pressure contact portion.

  Preferably, in the press device, a peripheral pitch between the upper press contact portions is equal to an interval between the upper punches, and a peripheral pitch between the lower press contact portions is an interval between the lower presses. equal.

  According to the above, the upper pressure contact part comes into contact with the upper head part from directly above the head part of the upper eyelid, and the movement of the upper pressure contact part can be adjusted to the movement of the upper eyelid. The lower pressure contact portion comes into contact with the head portion of the lower eyelid from directly below the head portion of the lower eyelid, and the movement of the lower eyelid pressure contact portion can be adjusted to the movement of the upper eyelid. For this reason, it is possible to more efficiently suppress the generation of a load in the direction in which the upper and lower eyelids fall.

Preferably, the press device further includes a rotary driving machine that rotationally drives the upper wheel and the lower wheel.
More preferably, the rotary drive rotates the upper wheel so that the upper press contact portion passes through the press position in synchronization with the timing when the upper guide passes through the press position, and the lower guide Synchronously with the timing of passing through the press position, the rotary drive rotates the lower wheel so that the lower pressure contact portion passes through the press position.
More preferably, the rotary drive unit drives the upper wheel to rotate so that the peripheral speed of the upper pressure contact portion around the central axis of the upper wheel is equal to the moving speed of the upper rod, and the center of the lower wheel The rotary drive rotates the lower wheel so that the peripheral speed of the lower pressure contact portion around the axis is equal to the moving speed of the lower rod.

  According to the above, the upper pressure contact part comes into contact with the upper head part from directly above the head part of the upper eyelid, and the movement of the upper pressure contact part can be adjusted to the movement of the upper eyelid. The lower pressure contact portion comes into contact with the head portion of the lower eyelid from directly below the head portion of the lower eyelid, and the movement of the lower pressure contact portion can be adjusted to the movement of the lower eyelid. For this reason, it is possible to more efficiently suppress the generation of a load in the direction in which the upper and lower eyelids fall.

Preferably, the press device further includes a pressurizer that applies a load in a direction in which the upper wheel and the lower wheel approach each other to at least one of the upper wheel and the lower wheel.
More preferably, the pressurizer applies a constant load to at least one of the upper wheel and the lower wheel.

  According to the above, it is possible to apply an appropriate pressure to the powder, and it is possible to satisfactorily solidify the powder.

  According to the present invention, it is possible to prevent the load in the direction in which the kite falls from being applied to the kite.

It is a perspective view of a compression molding apparatus. It is a top view of a compression molding apparatus. It is a perspective view of a tableting machine row. It is a perspective view of a tableting machine. It is a perspective view of a tableting machine. It is a right view of a tableting machine. It is a top view of a tableting machine. It is a fragmentary sectional view of a tableting machine. It is a front view of a rotary press apparatus. It is a top view of a rotary press apparatus. It is the figure which showed the motion of the upper press roller which contacts the head of an upper eyelid, and it. It is a top view of a part of tableting machine row | line | column and a lead screw. It is the figure which showed the motion of the conventional upper collar and the pressure roll which contacts it.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, and the scope of the present invention is not limited to the following embodiments and illustrated examples.

1. FIG. 1 is a perspective view of a compression molding apparatus 1. FIG. 2 is a plan view of the compression molding apparatus 1. FIG. 3 is a perspective view of the tableting machine row 20.
As shown in FIGS. 1 and 2, the compression molding apparatus 1 includes a travel guide 10, a tableting machine row 20, a tableting operation cam 70, a travel drive apparatus 80, a powder supply apparatus 90, a rotary press apparatus 100, and the like. Prepare.

  The travel guide 10 forms a closed route. The travel guide 10 includes an upper rail 11 and a lower rail 12 that are formed in an oval shape as a closed curve. The upper rail 11 and the lower rail 12 are provided in parallel with each other in a horizontal manner with a vertical interval therebetween. Here, the oval shape refers to an ellipse or a shape similar thereto, and in addition to an ellipse, an oval, a rounded rectangle, and an oval are a kind of oval. A rounded rectangle is one in which corners of a rectangle are formed in an arc shape. The upper rail 11 has a rounded rectangular shape, in particular, an entire short side portion having an arc shape. That is, the upper rail 11 has two straight portions 11a and 11b that are equal in length and parallel to each other, and one semicircular arc portion 11c connected between one ends of the straight portions 11a and 11b. And the other semicircular arc portion 11d connected between the other ends of the straight portions 11a and 11b. The lower rail 12 is the same as the upper rail 11.

  As shown in FIG. 3, the tableting machine row 20 includes a plurality of modularized tableting machines 21. These tableting machines 21 are arranged at equal intervals along the travel guide 10 to form a tableting machine row 20. These tableting machines 21 are arranged over the entire circumference of the travel guide 10, but in order to make the travel guide 10 and the tableting operation cam 70 easier to see in FIGS. 1 and 2, some tableting machines 21. Is illustrated. In FIG. 2, the illustration of the traveling drive device 80 is omitted.

  As shown in FIG. 1, these tableting machines 21 are supported by the travel guide 10 and guided along the travel guide 10. The travel drive device 80 applies power to the tableting machine 21 to cause the tableting machine 21 to travel in a counterclockwise direction (see arrow A in FIG. 2) when viewed from above. Thereby, the tableting machine 21 is circulated along the traveling guide 10. The tableting operation cam 70 causes the tableting machine 21 to perform a tableting operation as the tableting machine 21 travels. The powder supply device 90 provided at a predetermined position on the travel path of the tableting machine 21 (especially the side of the straight portion 11b of the upper rail 11) is used to pulverize the powder into a plurality of tableting machines 21 (particularly, a die 30 described later). Are sequentially supplied to the mortar 31). The rotary press device 100 provided at a predetermined position on the travel path of the tableting machine 21 (particularly the side of the straight portion 11b of the upper rail 11) presses the powder struck by the tableting machine 21 to produce powder. To solidify. Tablets are formed from the compressed powder. Since the plurality of tablet presses 21 sequentially pass through the press device 100, the powder supplied to the tablet press 21 is sequentially pressed by the press device 100.

  A plurality of powder supply devices 90 may be provided, and these powder supply devices 90 may be arranged along the straight portions 11 b of the upper rail 11, and these powder supply devices 90 may supply different powders to the tableting machine 21. . In addition, the small piece transfer device is arranged in parallel with the powder supply device 90, and small pieces (for example, electronic components such as IC chips, active elements, passive elements, and solid agents) supplied to the small piece transfer device are driven by the small piece transfer device. It may be transferred to the lock machine 21 (particularly, the mortar 31 of the mortar 30 described later).

2. Configuration of Tableting Machine The tableting machine 21 will be described in detail with reference to FIGS. FIG. 4 is a perspective view showing the tableting machine 21 as viewed from the front side, the upper side, and the right side. FIG. 5 is a perspective view showing the tableting machine 21 as viewed from the rear side, the upper side, and the left side. FIG. 6 is a right side view of the tableting machine 21. FIG. 7 is a plan view of the tableting machine 21. FIG. 8 is a cross-sectional view showing a part of the tableting machine 21 cut along the line VIII-VIII shown in FIG. The front surface of the tableting machine 21 refers to the surface facing the outside of the travel guide 10, and the rear surface of the tableting machine 21 refers to the surface facing the inside of the travel guide 10.

  The tableting machine 21 includes a traveling carriage 22, a die 30, an upper punch 40, a lower punch 50, a linear motion guide mechanism 60, brackets 64 to 66, cam followers 77 and 78, and the like.

  The traveling carriage 22 is provided in a horizontal T shape when viewed from the left side or the right side. That is, the traveling carriage 22 has a rectangular plate-shaped roller support plate 23 and a holding plate 24, and the roller support plate 23 is supported by the traveling guide 10 in a standing state, and the holding plate 24 is placed on the front surface of the roller support plate 23. Extends forward from the middle in the height direction.

  Two running rollers 25 to 28 are rotatably provided on the rear surface of the roller support board 23. The rotation shafts of the traveling rollers 25 to 28 extend rearward from the rear surface of the roller support plate 23. These traveling rollers 25 to 28 are provided in four upper and lower stages.

  A roller support plate 23 is disposed outside the rails 11 and 12 (see FIGS. 1, 2, and 6), and the holding plate 24 extends outward from the rails 11 and 12. The traveling roller 22 and the traveling roller 26 sandwich the upper rail 11 between them, so that the traveling carriage 22 is supported by the upper rail 11. Similarly, the traveling carriage 22 is supported on the lower rail 12 by the traveling rollers 27 and 28. The traveling rollers 25 and 26 roll with respect to the upper rail 11, and the traveling rollers 27 and 28 roll with respect to the lower rail 12, whereby the traveling carriage 22 extends along the rails 11 and 12 outside the rails 11 and 12. And run. The running rollers 22 to 28 make the running carriage 22 run smoothly and stabilize.

  A mortar 30 is provided at the distal end portion of the holding plate 24. Specifically, the mounting hole 24a is provided so as to penetrate the tip side portion of the holding plate 24 vertically, the die 30 is fitted into the mounting hole 24a, and the die 30 is fixed to the holding plate 24 by the set screw 34. Yes. The set screw 34 is tightened from the front end surface of the holding plate 24 toward the mounting hole 24 a, and the front end of the set screw 34 is pressed against the outer peripheral surface of the die 30. A mortar hole 31 is formed in the mortar 30. The mortar 31 penetrates the mortar 30 up and down.

  An upper punch 40 is disposed on the upper side of the mortar 30, a lower punch 50 is disposed on the lower side of the mortar 30, and the upper punch 40, the lower punch 50 and the mortar hole 31 are arranged concentrically.

The upper collar 40 has a body 41, a tip 42 and a head 43. The body portion 41 forms a main body portion of the upper collar 40. The trunk | drum 41 is provided in column shape, and the axis line of the trunk | drum 41 extends in an up-down direction. A heel 42 is provided at the lower end of the body 41, and a head 43 is provided at the upper end of the body 41. The tip 42 is provided in a columnar shape that is thinner than the body portion 41, and the axis of the tip 42 extends in the vertical direction. The head 43 is provided in a disk shape having a larger diameter than the body 41. The top surface of the head 43 is formed flat and is orthogonal to the axes of the upper collar 40 and the body 41.
The lower rod 50 has a body 51, a flange 52, and a head 53, and has a vertically symmetrical configuration with the upper rod 40.

  The upper rod 40 and the lower rod 50 can be moved up and down by the linear motion guide mechanism 60 and are assembled to the traveling carriage 22. The linear motion guide mechanism 60 individually guides the upper rod 40 and the lower rod 50, and guides the upper rod 40 in the vertical direction by the linear motion guide mechanism 60 and the vertical direction of the lower rod 50 by the linear motion guide mechanism 60. Guidance is independent. When the upper guide 40 is guided downward by the linear motion guide mechanism 60, the tip 42 of the upper guide 40 is inserted into the mortar 31, and when the lower guide 50 is guided upward by the linear motion guide mechanism 60, The tip 52 of the heel 50 is inserted into the mortar 31.

  The linear motion guide mechanism 60 is a ball spline type guide mechanism. The linear motion guide mechanism 60 includes a shaft 61, a holding body 62, a moving body 63, and a large number of balls. The shaft 61 is a spline shaft, and a plurality of grooves parallel to the axis of the shaft 61 are formed on the outer peripheral surface of the shaft 61. The holding body 62 and the moving body 63 are provided in a cylindrical shape, the shaft 61 is inserted into the holding body 62 and the moving body 63, and the radial load of the shaft 61 is received by the holding body 62 and the moving body 63. A plurality of balls are rotatably held on the inner peripheral surface of the holding body 62, these balls are accommodated in grooves on the outer peripheral surface of the shaft 61, and the circumferential load of the shaft 61 is received by the holding body 62 via the balls. It is done. Similarly, the moving body 63 is assembled to the shaft 61 with a plurality of balls interposed between the outer peripheral surface of the shaft 61 and the inner peripheral surface of the moving body 63. Therefore, the moving body 63 and the holding body 62 can move linearly relative to the shaft 61 along the axial direction, but the rotation of the moving body 63 and the holding body 62 around the axis is restricted by the shaft 61 and the ball. ing.

  The linear guide mechanism 60 as described above is assembled to the traveling carriage 22. Specifically, the holding hole 24 b is provided so as to vertically penetrate the intermediate portion of the holding plate 24, the holding body 62 is fitted into the holding hole 24 b, and the holding body 62 is fixed to the holding plate 24. In a state where the linear motion guide mechanism 60 is assembled to the traveling carriage 22, the shaft 61 penetrates the holding plate 24 in the vertical direction, and the moving body 63 is disposed below the holding plate 24. The shaft 61 and the moving body 63 can move up and down relatively with respect to the holding plate 24.

  An upper bracket 64 is assembled to the upper end portion of the shaft 61, and the upper bracket 64 extends forward from the upper end portion of the shaft 61. The upper bracket 64 and the shaft 61 are fixed by screws or the like.

  An upper collar 40 is assembled to the tip of the upper bracket 64. Specifically, the body 41 of the upper collar 40 penetrates the tip of the upper bracket 64 up and down, the upper bracket 64 clamps the body 41 of the upper collar 40 to the left and right, and the head 43 of the upper collar 40. Comes into contact with the upper surface of the upper bracket 64, and the tip 42 of the upper collar 40 projects downward from the upper bracket 64. In this state, the body 41 is fastened to the upper bracket 64 with screws or the like. Therefore, the upper collar 40, the upper bracket 64, and the shaft 61 move up and down together.

  A lower bracket 65 is assembled to the moving body 63, and the lower bracket 65 extends forward from the moving body 63. The lower bracket 65 and the moving body 63 are fixed by screws or the like.

  The shaft 61 is partially covered with the upper telescopic tube 67 by inserting the shaft 61 into the bellows-shaped upper telescopic tube (upper cover) 67 above the holding plate 24. The upper end of the upper telescopic tube 67 is connected to the upper bracket 64, and the lower end of the upper telescopic tube 67 is connected to the holding body 62 or the holding plate 24. As the upper bracket 64 moves up and down, the upper telescopic tube 67 expands and contracts. The shaft 61 is protected by the upper telescopic tube 67, and dust and powder can be prevented from entering the gap between the shaft 61 and the holding body 62.

  The shaft 61 is partially covered with the lower telescopic tube 68 by inserting the shaft 61 into the bellows-shaped lower telescopic tube (lower cover) 68 below the holding plate 24. The upper end of the lower telescopic tube 68 is connected to the holding body 62 or the holding plate 24, and the lower end of the lower telescopic tube 68 is connected to the moving body 63 or the lower bracket 65. As the lower bracket 65 moves up and down, the lower telescopic tube 68 expands and contracts. The lower telescopic tube 68 can prevent dust and powder from entering.

  A lower collar 50 is assembled to the tip of the lower bracket 65. Specifically, the body 51 of the lower rod 50 penetrates the tip of the lower bracket 65 vertically, the lower bracket 64 clamps the body 51 of the lower rod 50 right and left, and the head 53 of the lower rod 50 Comes into contact with the bottom surface of the lower bracket 65, and the tip 52 of the lower collar 50 projects upward from the lower bracket 65. In this state, the body 51 is fastened to the lower bracket 65 with screws or the like. Accordingly, the lower rod 50, the lower bracket 65, and the moving body 65 move up and down together.

A bracket 66 is fixed to the lower end portion of the shaft 61. A cam follower 77 is attached to the rear surface of the bracket 66. A cam follower 78 is also attached to the rear surface of the lower bracket 65. The cam followers 77 and 78 are moved up and down by a tableting operation cam 70.
A bellows-like expansion / contraction tube (cover) is also provided between the bracket 66 and the lower bracket 65, the shaft 61 is inserted into the expansion / contraction tube, and the upper end of the expansion / contraction tube is connected to the lower bracket 65 or the moving body 63. The lower end of the telescopic tube may be connected to the bracket 66. A cam follower 77 may be provided on the rear surface of the upper bracket 64.

3. Next, with reference to FIG. 2, the driving device for travel 80 will be described in detail.
The travel drive device 80 transmits power to the travel carriage 22 of the tableting machine 21 to cause the travel carriage 22 to travel. The travel drive device 80 is a chain drive device having a motor 81, a drive sprocket 82, a driven sprocket 83, a roller chain 84, and the like. The output shaft of the motor 81 is connected to the drive sprocket 82. The drive sprocket 82 is disposed inside one semicircular portion of the traveling guide 10, and the driven sprocket 83 is disposed inside the other semicircular portion of the traveling guide 10. The roller chain 84 is provided in an endless shape (closed curve shape) and is stretched between the drive sprocket 82 and the driven sprocket 83. As shown in FIGS. 4 to 8, the rear surface of the roller support plate 23 of the traveling carriage 22 is connected to the roller chain 84, and each traveling carriage 22 is connected by the roller chain 84. The roller chain 84 circulates by the motor 81 and the power of the motor 81 is transmitted to the traveling carriage 22 by the roller chain 84, so that the traveling carriage 22 travels. The motor 81 is controlled at a constant speed by a constant speed control circuit 85, whereby the traveling carriage 22 travels at a constant speed. The traveling drive device 80 may be a belt drive device by employing an endless belt instead of the roller chain 84 and employing a pulley instead of the sprockets 82 and 83.

Next, the tableting operation cam 70 will be described in detail with reference to FIG.
The tableting operation cam 70 converts the power during travel of the tableting machine 21 into the power of the up and down movement of the upper punch 40 and the lower punch 50. The tableting operation cam 70 includes an upper punch operation cam 71 and a lower punch operation cam 74.

  The upper rod operation cam 71 has a pair of upper and lower strip cams 72 and a slit portion 73. A pair of strip plate cams 72 is provided along the traveling guide 10 in the circumferential direction and in parallel with each other with a vertical gap therebetween, and a slit portion 73 is formed between the strip plate cams 72. A cam follower 77 is inserted into the slit 73 and sandwiched between the upper and lower strip cams 72. The position of the slit portion 73 in the vertical direction is not constant, and the vertical position is set according to the circumferential position. Therefore, the cam follower 77 is displaced in the vertical direction by sliding in the circumferential direction along the strip plate cam 72. Therefore, the upper punch 40 moves up and down with the rotation of the tableting machine 21.

  The lower arm operation cam 74 also has a pair of upper and lower strip plate cams 75 and a slit portion 76, and the cam follower 78 inserted into the slit portion 76 slides in the circumferential direction along the strip plate cam 75, so that the vertical direction It is displaced to. Accordingly, the lower punch 50 moves up and down as the tableting machine 21 turns.

  The strip cam 72 of the upper rod operation cam 71 is not endless, but is interrupted at the press position P (see FIGS. 1 and 9) of the rotary press device 100, and the cam follower 77 is stripped at that portion. Not supported by. Similarly, the strip plate cam 75 of the lower heel operation cam 74 is also interrupted at the press position P of the rotary press device 100. Here, the press position P refers to a portion between the center axis of the upper wheel 101 and the center axis of the lower wheel 106 described later.

4). Configuration of Rotary Press Device Subsequently, the rotary press device 100 will be described in detail with reference to FIGS. 9 and 10. Here, FIG. 9 is a front view of the rotary press apparatus 100, and FIG. 10 is a plan view of the rotary press apparatus 100.
The rotary press device 100 sequentially presses the upper punch 40 and the lower punch 50 of the plurality of tablet presses 21 that sequentially pass through the press position P. The rotary press device 100 includes a machine frame (not shown), a pair of upper wheels 101, a plurality of upper press rollers (upper pressure contact portions) 102, a pair of lower wheels 106, a plurality of lower press rollers (lower pressure contact portions) 107, A pressure actuator 110 and a rotary drive machine 120 are provided.

  The pair of upper wheels 101 is disposed on the upper side of the travel locus of the upper rod 40 along the straight portion 11 b of the upper rail 11. These upper wheels 101 are opposed to each other with a gap therebetween, and are arranged coaxially. The upper wheel 101 is attached to the machine frame of the rotary press apparatus 100 and is rotatably provided around a central axis extending in the front-rear direction. Moreover, the center part of a pair of upper wheel 101 is being fixed to the drum 102a (refer FIG. 1) pinched | interposed between them.

  A pair of lower wheels 106 are arranged below the upper wheel 101. These lower wheels 106 are arranged below the traveling locus of the lower rod 50 along the straight portion 11b of the upper rail 11. These lower wheels 106 are opposed to each other with a gap therebetween and are arranged coaxially. And the lower wheel 106 is rotatably attached to the intermediate part of the link member 115 extended in the left-right direction in FIG.9 and FIG.10. The central axis of the lower wheel 106 is parallel to the central axis of the upper wheel 101. Moreover, the center part of a pair of lower wheel 106 is being fixed to the drum 106a (refer FIG. 1) pinched | interposed between them.

  The right end portion 116 of the link member 115 is rotatably attached to the machine frame of the rotary press device 100, and the link member 115 swings up and down with the right end portion 116 as a fulcrum. The left end 117 of the link member 115 is connected to the plunger 111 of the pressure actuator 110. The pressure actuator 110 is a direct drive source such as a hydraulic cylinder, an air cylinder, or an electromagnetic solenoid. The pressure actuator 110 is attached to the machine frame. Accordingly, the pressure actuator 110 pushes up the lower wheel 106 by moving the plunger 111 upward, so that an upward load is applied to the link member 115 and the lower wheel 106. The driving method of the pressure actuator 110 is a load control method, and the pressure actuator 110 is controlled so that the load of the pressure actuator 110 is constant. Further, with the load of the pressure actuator 110, a reaction force is generated from the lower wheel 106 to the pressure actuator 110, and when the reaction force exceeds a certain level, the plunger 111 moves backward. Therefore, the load of the pressure actuator 110 does not exceed a certain level.

  Similar to the case where the upward load is applied to the lower wheel 106 by the pressure actuator 110 and the link member 115, the downward load may be applied to the upper wheel 101 by the pressure actuator and the link member. Further, when a downward load is applied to the upper wheel 101, the pressure actuator 110 and the link member 115 may be omitted, and the lower wheel 106 may be rotatably attached to the machine frame of the rotary press device 100.

  The displacement of the plunger 111 in the vertical direction is detected by the displacement sensor 114, and the displacement sensor 114 outputs an output signal representing the detected displacement. The output signal of the displacement sensor 114 is used for feedback control of the powder supply device 90. That is, the feedback control circuit inputs the output signal of the displacement sensor 114, and based on the output signal when the tableting machine 21 passes the press position P, the powder supply amount by the powder supply device 90 is set to a constant target value. The powder supply apparatus 90 is controlled to maintain.

  The upper wheel 101 and the lower wheel 106 are rotationally driven by a rotational driving machine 120 attached to the machine frame. The rotational drive unit 120 transmits a motor 121, a first transmission mechanism 122 that transmits the power of the motor 121 to the upper wheel 101 to rotate the upper wheel 101, and a power of the motor 121 to the lower wheel 106 to transmit the lower wheel 106. And a second transmission mechanism 123 that rotates the second transmission mechanism 123. The first transmission mechanism 122 is a combination of a gear train and a belt transmission mechanism. The second transmission mechanism 123 is a belt transmission mechanism. The motor 121 is controlled at a constant speed by a constant speed control circuit 124.

  The first transmission mechanism 122 includes a gear 122a, a gear 122b, a pulley 122c, a timing belt 122d, a two-stage pulley 122e, a timing belt 122f, a two-stage pulley 122g, a timing belt 122h, and a pulley 122i. The gear 122a is directly connected to the output shaft of the motor 121, the gear 122b is engaged with the gear 122a, and the timing belt 122d is stretched between a pulley 122c provided coaxially with the gear 122b and a large pulley of the two-stage pulley 122e. The timing belt 122f is stretched between the small pulley of the two-stage pulley 122e and the large pulley of the two-stage pulley 122g, and the pulley 122i provided coaxially with the upper wheel 101 and the small pulley of the two-stage pulley 122g A timing belt 122h is stretched between them.

  The second transmission mechanism 123 includes a pulley 123a, a timing belt 123b, a two-stage pulley 123c, a timing belt 123d, a two-stage pulley 123f, a timing belt 123g, and a pulley 123i. A pulley 123a is directly connected to the output shaft of the motor 121, a timing belt 123b is stretched between the pulley 123a and a large pulley of the two-stage pulley 123c, and a small pulley of the two-stage pulley 123c and a large of the two-stage pulley 123f. A timing belt 123d is stretched between the pulley and a timing belt 123g is spanned between the small pulley of the two-stage pulley 123f and the pulley 123i, and the pulley 123i is provided coaxially with the lower wheel 106. . A pulley 123f is rotatably attached to the right end portion 116 of the link member 115.

  In addition, the drive source for rotationally driving the upper wheel 101 and the lower wheel 106 may be provided separately. Further, the drive source of the rotary drive device 120 and the drive source of the travel drive device 80 are made common, and either the motor 121 or the motor 81 is omitted, and the upper wheel 101, the lower wheel 106, and the tablet press 21 are driven by the other. May be driven.

Between the pair of upper wheels 101, a plurality of columnar upper press rollers (upper pressure contact portions) 102 are arranged at equal intervals along the circumferential direction around the central axis of the upper wheel 101. These upper press rollers 102 are rotatably attached to the upper wheel 101. Specifically, both ends of a plurality of rotating shafts 103 parallel to the central axis of the upper wheel 101 are respectively fixed to the pair of upper wheels 101, and these rotating shafts 103 are respectively inserted into the upper press rollers 102, A radial load of the press roller 102 is received by the rotating shaft 103.
Further, the outer peripheral surface of the upper press roller 102 is formed in a cylindrical surface that is coaxial with the rotating shaft 103, and a part of the outer peripheral surface protrudes outward from the outer peripheral surface of the upper wheel 101.

  A disc spring (upper elastic member) 104 is sandwiched between one end surface of the upper press roller 102 and one upper wheel 101, and also between the other end surface of the upper press roller 102 and the other upper wheel 101. A disc spring (upper elastic member) 105 is sandwiched. A rotating shaft 103 is passed through these disc springs 104 and 105. The upper press roller 102 is held by the disc springs 104 and 105 so as to be centered between the pair of upper wheels 101, and the upper press roller 102 moves along the rotation shaft 103 against the elastic force of the disc springs 104 and 105. It is movable. Here, a combination of a plurality of upper press rollers 102, a rotating shaft 103, and disc springs 104 and 105 on a pair of upper wheels 101 is referred to as an upper rotary press panel.

  As described above, in the same manner that the plurality of upper press rollers 102 are attached to the upper wheel 101 by the respective rotation shafts 103, the plurality of cylindrical lower press rollers (lower press contact portions) 107 have their respective rotation shafts. A disc spring (lower elastic member), a lower press roller 107 and a disc spring (lower elastic member) are sandwiched between a pair of lower wheels 106. The circumferential pitch of the adjacent lower press rollers 107 is equal to the circumferential pitch of the adjacent upper press rollers 102. A structure in which a plurality of lower press rollers 107, a shaft 108, and a disc spring are assembled to a pair of lower wheels 106 is referred to as a lower rotary press machine.

  When the wheels 101 and 106 are rotationally driven by the rotary drive machine 120, the upper press roller 102 turns around the central axis of the upper wheel 101, and the lower press roller 107 rotates around the central axis of the lower wheel 106. Turn. The peripheral speeds of the press rollers 102 and 106 are set equal to each other.

  Further, the circumferential pitch of the upper press rollers 102 is equal to the interval between the upper punches 40 of the adjacent tableting machines 21, and the circumferential pitch of the lower press roller 107 is equal to the interval between the lower punches 50 of the adjacent tableting machines 21. Further, the peripheral speeds of the press rollers 102 and 107 are controlled to be equal to the traveling speed of the tableting machine 21 by the constant speed control circuit 124.

5. Operation of Compression Molding Device Next, the operation of the compression molding device 1 will be described.
The motor 81 of the travel drive device 80 is controlled at a constant speed by a constant speed control circuit 85. Then, the tableting machine 21 travels along the upper rail 11 and the lower rail 12 and circulates. The tableting machine 21 running on the straight portion 11 b passes through the powder supply device 90 and the rotary press device 100 in this order.

  While the tableting machine 21 is running, the powder supply device 90 performs a periodic powder supply operation. Specifically, in synchronization with the timing when the tableting machine 21 passes through the powder supply device 90, the powder is supplied from the top of the die 30 to the mortar 31 by the powder supply device 90. The position where the powder is supplied by the powder supply device 90 is not in the arc portions 11c and 11d but in the straight portion 11b. Therefore, it is possible to suppress the powder in the mortar hole 31 from being biased by centrifugal force.

  The motor 121 of the rotary drive machine 120 is controlled at a constant speed by a constant speed control circuit 124. Then, the upper wheel 101 and the lower wheel 106 rotate, and the upper press roller 102 and the lower press roller 107 rotate. Further, an upward load is applied to the lower wheel 106 by the pressure actuator 110.

  Here, the timing when the upper press roller 102 during turning passes the lowest point, the timing when the lower press roller 107 during turning passes the uppermost point, and the upper and lower punches 40 and 40 of the tableting machine 21 that is running. The timing at which 50 passes the press position P is synchronized. When the upper punch 40 and the lower punch 50 of the tableting machine 21 pass the press position P, the punches 40 and 50 of the tableting machine 21 are pressed so as to be sandwiched between the press rollers 102 and 107 of the rotary press device 100, Tablets are formed from the powder.

Below, operation | movement of the tableting machine 21 while the tableting machine 21 goes around along the rails 11 and 12 is demonstrated in detail.
The cam follower 77 of the tableting machine 21 is pushed up by the upper punching operation cam 71 after the tableting machine 21 passes through the rotary press device 100 and reaches the powder supply device 90. As a result, the upper punch 40 is raised, and the tip 42 of the upper punch 40 is pulled upward from the mortar 31 of the die 30. The state in which the tip 42 of the upper punch 40 is pulled out from the mortar 31 is maintained by the upper punch operation cam 71 until after the tableting machine 21 passes through the powder supply device 90.

  On the other hand, after the tablet press 21 passes through the rotary press device 100 and reaches the powder supply device 90, the cam follower 78 of the tablet press 21 is pushed up by the lower punch operation cam 74 and then lowered. It is done. Thereby, when the tableting machine 21 passes the rotary press apparatus 100, the lower punch 50 inserted into the mortar 31 of the mortar 30 is raised and then lowered. As the lower punch 50 rises, the tip 52 of the lower punch 50 penetrates upward from the mortar 31 or the tip surface of the tip 52 is aligned with the upper end surface of the die 30, so that the formed tablet is the lower punch 50. It is protruded from the mortar hole 31 by the tip 52. Thereby, the tablets can be collected by a pickup device or the like. By lowering the lower punch 50 after ascending, the tip 52 of the lower punch 50 is drawn into the mortar 31, but does not come down from the mortar 31. In addition, the raising operation | movement of the lower eyelid 50 as mentioned above is performed simultaneously or behind with the raising operation | movement of the above-mentioned upper eyelid 40. FIG.

After the tip 52 of the lower punch 50 is pulled into the mortar 31, the position of the lower punch 50 is maintained by the lower punch operation cam 74 until the tableting machine 21 reaches the press position P of the rotary press device 100. Be drunk.
When the tableting machine 21 passes through the powder supply device 90, the powder is supplied to the mortar 31 by the powder supply device 90, and the powder is deposited on the distal end surface of the tip 52 of the lower punch 50.

  The cam follower 77 of the tableting machine 21 is pulled down by the upper punching operation cam 71 after the tableting machine 21 passes through the powder supply device 90 and reaches the rotary press device 100. Thereby, the upper punch 40 is lowered, and the tip 42 of the upper punch 40 is inserted into the mortar 31 of the mortar 30. Then, the powder deposited on the tip 52 of the lower rod 50 is hit from above by the tip 42 of the upper rod 40, and the powder is hit from below by the tip 52 of the lower rod 50. In this way, the powder is preliminarily compressed by the tips 42 and 52.

  After the tip 42 of the upper punch 40 is inserted into the mortar 31, the position of the upper punch 40 is maintained by the upper punch operation cam 71 until the tableting machine 21 reaches the press position P of the rotary press device 100. Be drunk.

  Thereafter, when the tableting machine 21 passes the press position P, the upper press roller 102 passes the lowest point and the lower press roller 107 passes the highest point. At this time, the upper press roller 102 is pressed against the head 43 of the upper punch 40, the lower press roller 107 is pressed against the head 53 of the lower punch 50, and the powder sandwiched between the upper punch 40 and the lower punch 50 is removed. It is compressed by the load of the pressure actuator 110. Thereby, powder is solidified. When the tableting machine 21 passes through the press position P, the cam follower 77 passes through the interrupted portion of the upper punching operation cam 71 and the cam follower 78 passes through the interrupted portion of the lower punching operation cam 74. Therefore, the load of the pressure actuator 110 does not act on these cams 71 and 74.

With reference to FIG. 11, the behavior when the tableting machine 21 passes through the rotary press device 100 will be described in detail.
Immediately before the upper press roller 102 reaches the lowest point, the outer peripheral surface of the upper press roller 102 contacts the top surface of the head 43 of the upper collar 40, and immediately before the lower press roller 107 reaches the highest point, The outer peripheral surface of the press roller 107 contacts the top surface of the head 53 of the lower collar 50 (see arrow T1 in FIG. 11). Thereby, the pressurization with respect to the powder pinched | interposed between the tip 42 of the upper collar 40 and the tip 52 of the lower collar 50 is started. Hereinafter, this timing is referred to as pressurization start timing.

  Here, since the peripheral speed of the upper press rollers 102 and 106 is equal to the traveling speed of the tableting machine 21, the upper press roller 102 moves from almost right above the head 43 of the upper punch 40 to the head 43 at the pressurization start timing. The lower press roller 107 comes into contact with the head 53 almost directly below the head 53 of the lower rod 50. Therefore, the lateral load hardly acts on the flanges 40 and 50. Therefore, pressure is applied to the powder without waste, and the powder is solidified satisfactorily. Moreover, it is not necessary to apply stress to the compression molding apparatus 1.

At the pressurization start timing, the upper press roller 102 contacts the head 43 of the upper collar 40 at a position close to the lowest point. Further, the lowermost part or the vicinity thereof on the outer peripheral surface of the upper press roller 102 is in contact with the head 43 of the upper punch 40, and the upper press roller from the contact portion between the outer peripheral surface of the upper press roller 102 and the head 43 of the upper punch 40. A plane connecting up to the central axis 102 is substantially parallel to the vertical direction. Therefore, the tangential component force at the contact portion between the upper press roller 102 and the upper collar 40 is very small, and a lateral load hardly acts on the upper collar 40. Therefore, pressure is applied to the powder without waste, and the powder is solidified satisfactorily.
Similarly, at the pressurization start timing, the lower press roller 107 contacts the head 53 of the lower punch 50 at a position close to the uppermost point, and from the contact portion between the outer peripheral surface of the lower press roller 107 and the head 53 of the lower punch 50. A plane connecting up to the central axis of the lower press roller 107 is substantially parallel to the vertical direction. Therefore, the lateral load hardly acts on the lower eyelid 50.

  As described above, at the pressurization start timing, the upper press roller 102 comes into contact with the top surface of the head 53 from directly above the head 43 of the upper collar 40, and the lower press roller 107 moves on the head 53 of the lower collar 50. Since the head top surface of the head 53 is contacted from directly below, the head top surfaces of the heads 43 and 53 can be flat surfaces perpendicular to the axes of the upper eyelid 40 and the lower eyelid 50. If the top surfaces of the heads 43 and 53 are flat, almost no component force in the tangential direction is generated even by a load from the press rollers 102 and 107 to the top surfaces of the heads 43 and 53. Therefore, the lateral load hardly acts on the flanges 40 and 50.

  Thereafter, the upper press roller 102 reaches the lowest point, and the lower press roller 107 reaches the highest point (see arrow T2 in FIG. 11). Immediately thereafter, the outer peripheral surface of the upper press roller 102 is separated from the top surface of the head 43 of the upper collar 40, and the outer peripheral surface of the lower press roller 107 is separated from the top surface of the head 53 of the lower collar 50 (arrow in FIG. 11). See T3). Thereby, the pressurization with respect to powder is complete | finished. Hereinafter, this timing is referred to as pressurization end timing.

  From the pressurization start timing to the pressurization end timing, a constant pressure is applied to the powder from the soots 40 and 50 by the pressurization actuator 110. This is because the pressure actuator 110 is controlled so that the load is constant.

  From the pressurization start timing to the pressurization end timing, the upper press roller 102 moves in the circumferential direction around the axis of the upper wheel 101, and the upper rod 40 moves downstream. Since the upper press roller 102 is pressed against the head 43 of the upper punch 40, the upper press roller 102 and the upper presser 40 are moved at the contact portion between the upper press roller 102 and the upper press 40 as the upper press roller 102 moves. There is a risk of tangential loads. However, when the upper press roller 102 rotates around the rotation shaft 103, no slip occurs between the upper press roller 102 and the head 43 of the upper collar 40, and the tangential load is released. Therefore, the lateral load does not act on the upper eyelid 40, and the powder is solidified satisfactorily.

  The lower press roller 107 moves in the circumferential direction from the pressurization start timing to the pressurization end timing, and the lower rod 50 moves downstream. As in the case of the upper press roller 102, the lower press roller 107 rotates about the rotation shaft 108, so that a lateral load does not act on the lower rod 50.

6). Effects / Benefits The above embodiments have the following effects / benefits.
(1) The tablet 30 is modularized by assembling the mortar 30, the upper punch 40, the lower punch 50, the linear motion guide mechanism 60, and the like to the traveling carriage 22. Therefore, there is a degree of freedom in the arrangement shape of these tableting machines 21, and the shape of the locus of the tableting machine 21 is not restricted. Therefore, it is possible to provide the compression molding apparatus 1 in which a plurality of tableting machines 21 are arranged along the oval-shaped rails 11 and 12.

(2) Since the rails 11 and 12 can be formed in an oval shape, the rails 11 and 12 have a straight portion, and the powder supply device 90 and the rotary press device 100 can be arranged beside the straight portion. In addition, an increase in the area of the region surrounded by the rails 11 and 12 can be minimized while increasing the overall length of the rails 11 and 12. By increasing the total length of the rails 11 and 12, the powder supply device 90 and the rotary press device 100 can be arranged along the plurality of rails 11 and 12. Devices other than the powder supply device 90 and the rotary press device 100 are arranged beside the rails 11 and 12, and various processing (for example, cleaning of the die 30, picking up tablets, liquid and solid in the die hole 31) Etc.) can also be performed.

(3) Since the mortar 30, the upper rod 40, the lower rod 50, and the linear guide mechanism 60 are assembled to the traveling carriage 22, the coaxiality of the mortar 30, the upper rod 40, and the lower rod 50 can be made high. it can. It is possible to prevent the coaxiality of the mortar 30, the upper punch 40, and the lower punch 50 from being lowered by the running and operation of the tableting machine 21.

(4) The linear motion guide mechanism 60 is not provided directly above or directly below the mortar 31 but is provided at a position shifted in the horizontal direction from the mortar 31 of the mortar 30. Therefore, the lubricating oil of the linear motion guide mechanism 60 does not leak into the mortar hole 31.

(5) The linear motion guide mechanism 60 can be protected from dust and powder by the telescopic pipes 67 and 68.

(6) Since the head 43 of the upper collar 40 is caught on the upper surface of the upper bracket 64, the upper collar 40 can be positioned and the upper press roller 102 is prevented from being directly pressed against the upper bracket 64. be able to. Further, since the upper press roller 102 is in direct contact with the upper punch 40, the powder can be appropriately pressed. The same applies to the lower rod 50, the lower bracket 65, and the lower press roller 107.

(7) Since the powder supply device 90 and the rotary press device 100 are arranged beside the straight portions of the rails 11 and 12, the powder supply device 90 can supply the powder favorably, and the press by the rotary press device 100 can be performed. Can also be performed well.

(8) Since the head 43 of the upper rod 40 is pressed by the upper press roller 102 from directly above, and the head 53 of the lower rod 50 is pressed by the lower press roller 107 from almost immediately below, the lateral load is reduced. 40, 50 hardly affected.

(9) Even if the press rollers 102 and 107 are rotated by the heads 43 and 53 of the flanges 40 and 50, the wheels 101 and 106 are rotationally driven by the rotary driving device 120. Can be swiveled. Because the upper press rollers 102 and 107 rotate, the upper press roller 102 and the head 43 of the upper collar 40 move in a pressure contact state from the pressurization start timing to the pressurization end timing, and the pressurization start timing to the pressurization end timing. The lower press roller 107 and the head 53 of the lower rod 50 are moved in pressure contact. Therefore, from the pressurization start timing to the pressurization end timing, the head 43 of the upper collar 40 is pressurized by the upper press roller 102 from directly above, and the head 53 of the lower collar 50 is pressed by the lower press roller 107 from almost immediately below. Pressed.

(10) Since the pressure during the compression of the powder by the pressure actuator 110 is constant, the tablet is formed well. Furthermore, by detecting the displacement of the plunger 111 in the vertical direction by the displacement sensor 114, the compressed state and amount of the powder in the mortar 31 can be monitored. Further, since the displacement sensor 114 can perform accurate detection even when compared with a load cell or the like, accurate feedback control can be performed using the output signal of the displacement sensor 114.

7). Modifications As mentioned above, although the form for implementing this invention was demonstrated, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and equivalents thereof are also included in the present invention. Changes from the above embodiment will be described below. You may apply combining each change point demonstrated below.

  In the above-described embodiment, as shown in FIG. 6, the holding body 62 is fixed to the holding plate 24 of the traveling carriage 22, and the shaft 61 can be moved up and down. On the other hand, the holding body 62 may not be provided, and the shaft 61 may be fixed to the holding plate 24 so as to vertically penetrate the holding plate 24 of the traveling carriage 22. In this case, an upper moving body similar to the moving body 63 is disposed on the upper side of the holding plate 24, the shaft 61 is inserted into the upper moving body, and the upper moving body can move up and down along the shaft 61. Yes. Further, the upper bracket 64 is not assembled to the upper end of the shaft 61 but is assembled to the upper moving body. Further, the cam follower 77 is not provided on the bracket 66 but on the rear surface of the upper bracket 64. Therefore, the bracket 66 is not provided.

  In the above-described embodiment, as shown in FIG. 6, the upper rod 40 and the shaft 61 move up and down integrally, and the lower rod 50 moves up and down separately from the shaft 61. On the other hand, the lower rod 50 and the shaft 61 may move up and down integrally, and the upper rod 40 may move up and down separately from the shaft 61. Specifically, the moving body 63 and the bracket 66 are not provided, and the lower bracket 65 is assembled to the lower end portion of the shaft 61. Thereby, the lower eyelid 50 and the shaft 61 move up and down integrally. On the other hand, an upper moving body similar to the moving body 63 is arranged on the upper side of the holding plate 24, the shaft 61 is inserted into the upper moving body, and the upper moving body can move up and down along the shaft 61. . Further, the upper bracket 64 is not assembled to the upper end of the shaft 61 but is assembled to the upper moving body. Thereby, the upper collar 40 moves up and down separately from the shaft 61. The cam follower 77 is provided on the rear surface of the upper bracket 64.

  In the above-described embodiment, after the tablet press 21 passes through the rotary press device 100 and before the tablet press 21 reaches the powder supply device 90, the lower punch 50 is raised and then lowered. On the other hand, the cam follower 78 of the tableting machine 21 is used for the lower punch operation after the tableting machine 21 passes through the rotary press device 100 and before the tableting machine 21 reaches the powder supply device 90. It may be pushed up later after being pulled down by the cam 74. As a result, the lower punch 50 that has been inserted into the mortar 31 of the mortar 30 at the time when the tableting machine 21 passes through the rotary press device 100 rises. When the lower punch 50 is lowered, the tip 52 of the lower punch 50 is pulled down from the mortar hole 31, so that the formed tablet falls from the mortar hole 31. By lowering the lower punch 50 after descending, the tip 52 of the lower punch 50 is inserted into the mortar 31.

  In the above-described embodiment, the travel drive device 80 is a chain drive device, but may be a linear motor, a screw drive device, or another drive device. For example, the screw drive device shown in the plan view of FIG. 12 may be applied to the travel drive device 80. As shown in FIG. 12, the lead screw 87 is provided along the straight portion 11 b so as to be parallel to the straight portion 11 b of the upper rail 11. The lead screw 87 is rotatably supported by a bearing or the like. A spiral groove 88 is formed on the outer peripheral surface of the lead screw 87. On the other hand, sliding pieces 89 are provided on the rear surface of the roller support plate 23 of each tableting machine 21, and these sliding pieces 89 are inserted into the grooves 88. When the lead screw 87 is rotationally driven by a power source such as a motor, the tableting machine 21 runs. Note that a lead screw similar to the lead screw 87 may be provided along the opposite linear portion 11a, and the tableting machine 21 may be driven by the rotation of the lead screw.

  In the above-described embodiment, the installation position of the rotary press device 100 is beside the straight portion 11b of the upper rail 11, but may be beside the circular arc portion 11d of the upper rail 11. Since the tableting machine 21 draws an arc-shaped trajectory in the arc portion 11d, it is effective that the upper press roller 102 is movable along the rotation shaft 103. That is, from the time when the upper press roller 102 comes into contact with the head 43 of the upper collar 40 at the pressurization start timing until the upper press roller 102 reaches the lowest point, the upper press is performed by the head 43 that draws an arc-shaped locus. The roller 102 is moved in the direction of the rotation shaft 103, and the disc spring 104 (or disc spring 105) is compressed. From the time when the upper press roller 102 reaches the lowest point until the upper press roller 102 moves away from the head 43 of the upper collar 40 at the end of pressurization, the upper press roller 102 is opposed by the head 43 that draws an arcuate path. The disc spring 104 (or disc spring 105) is restored. Such movement of the upper press roller 102 prevents slippage between the upper press roller 102 and the head 43 of the upper collar 40 and prevents the upper press roller 102 and the upper wheel 101 from being overloaded. be able to. The same applies to the lower press roller 107 on the lower side.

  In the above-described embodiment, the rails 11 and 12 have an oval shape. However, the rails 11 and 12 are not limited to the oval shape as long as the rails 11 and 12 have a closed curve shape.

  DESCRIPTION OF SYMBOLS 1 ... Compression molding apparatus, 10 ... Running guide, 11 ... Upper rail, 11a ... Straight part, 11b ... Straight part, 11c ... Arc part, 11d ... Arc part, 12 ... Lower rail, 20 ... Tableting machine row, 21 ... Punching Locking machine, 22 ... running carriage, 23 ... roller support plate, 24 ... holding plate, 24a ... mounting hole, 24b ... holding hole, 25 ... running roller, 26 ... running roller, 27 ... running roller, 28 ... running roller, 30 ..., mortar, 31 ... mortar, 34 ... set screw, 40 ... upper heel, 41 ... trunk, 42 ... heel, 43 ... head, 50 ... lower heel, 51 ... trunk, 52 ... heel, 53 ... Head, 60 ... Linear motion guide mechanism, 61 ... Shaft, 62 ... Holding body, 63 ... Moving body, 64 ... Upper bracket, 65 ... Lower bracket, 66 ... Bracket, 67 ... Upper telescopic tube 68 ... Lower telescopic tube, 70 ... Tableting operation cam, 71 ... Upper heel operation cam, 72 ... Strip plate cam, 73 ... Slit section, 74 ... Lower heel operation cam, 75 ... Strip plate cam, 76 ... Slit , 77 ... cam follower, 78 ... cam follower, 80 ... driving device for driving, 81 ... motor, 82 ... sprocket, 84 ... roller chain, 85 ... constant speed control path, 90 ... powder supply device, 100 ... rotary press device , 101 ... Upper wheel, 102 ... Upper press roller (upper pressure contact part), 103 ... Rotating shaft, 104 ... Disc spring (upper elastic member), 105 ... Disc spring (upper elastic member), 106 ... Lower wheel, 107 ... Lower Press roller (lower press-contact part), 108 ... rotating shaft, 110 ... pressurizing actuator (pressurizing machine), 111 ... plunger DESCRIPTION OF SYMBOLS 14 ... Displacement sensor, 115 ... Link member, 116 ... Right end part of link member, 117 ... Left end part of link member, 120 ... Rotary drive, 121 ... Motor, 122 ... First transmission mechanism, 122a ... Gear, 122b ... Gear 122c ... pulley, 122d ... timing belt, 122e ... two-stage pulley, 122f ... timing belt, 122g ... two-stage pulley, 122h ... timing belt, 122i ... pulley, 123 ... second transmission mechanism, 123a ... pulley, 123b ... timing Belt, 123c ... Two-stage pulley, 123c ... Two-stage pulley, 123d ... Timing belt, 123f ... Two-stage pulley, 123g ... Timing belt, 123i ... Pulley, 124 ... Constant speed control circuit

Claims (13)

In a press device that sequentially presses a plurality of upper eyelids passing sequentially through a predetermined press position and a plurality of lower eyelids below them at the press position,
An upper wheel rotatably provided above the press position;
A plurality of upper pressure contact parts that are attached to the upper wheel so as to be arranged along the circumferential direction of the upper wheel, and that are in pressure contact with the head of the upper end of the upper collar;
A lower wheel rotatably provided below the press position;
A press apparatus comprising: a plurality of lower press-contact portions that are attached to the lower wheel so as to be arranged along a circumferential direction of the lower wheel and press-contact with a head at a lower end of the lower collar.   The upper pressure contact portion is attached to the upper wheel so as to be rotatable around an axis parallel to the central axis of the upper wheel, and the lower pressure contact portion is rotated about an axis parallel to the central axis of the lower wheel. The press device according to claim 1, wherein the press device is rotatably attached to the lower wheel. The upper pressure contact portion has an outer peripheral surface formed in a cylindrical surface shape around its axis,
The press apparatus according to claim 2, wherein the lower pressure contact portion has an outer peripheral surface formed in a cylindrical surface shape around its axis. An upper elastic member and a lower elastic member;
The upper pressure contact portion is movable in a direction parallel to the central axis of the upper wheel and is attached to the upper wheel, and the upper elastic member resists the movement of the upper pressure contact portion. Hold and
The lower press-contact portion is movable in a direction parallel to the center axis of the lower wheel and is attached to the lower wheel, and the lower elastic member resists the movement of the lower press-contact portion. The press device according to any one of claims 1 to 3, wherein the press device is held.   The peripheral pitch between the upper press contact portions is equal to the interval between the upper flanges, and the peripheral pitch between the lower press contact portions is equal to the interval between the lower punches. The press apparatus as described in any one of 1-4.   The press device according to any one of claims 1 to 5, further comprising a rotary driving machine that rotationally drives the upper wheel and the lower wheel. Synchronously with the timing at which the upper collar passes through the press position, the rotary drive rotates the upper wheel so that the upper press contact portion passes through the press position,
The rotary drive rotates the lower wheel so that the lower press contact portion passes through the press position in synchronization with the timing when the lower rod passes through the press position. The press apparatus as described in.   The rotary drive machine drives the upper wheel to rotate so that the peripheral speed of the upper press-contact portion around the central axis of the upper wheel is equal to the moving speed of the upper rod, and the rotational wheel around the central axis of the lower wheel 8. The press device according to claim 6, wherein the rotary driving device rotationally drives the lower wheel so that a peripheral speed of a lower press-contact portion becomes equal to a moving speed of the lower rod.   The press according to any one of claims 1 to 8, further comprising a pressurizer that applies a load in a direction in which the upper wheel and the lower wheel approach each other to at least one of the upper wheel and the lower wheel. apparatus.   The press apparatus according to claim 9, wherein the pressurizer applies a constant load to at least one of the upper wheel and the lower wheel. A rotatable wheel,
A rotary press machine comprising: a press contact portion attached to the wheel at a position shifted from a central axis of the wheel and press-contacting a head of the scissors that strikes powder with a scissors tip.   12. The rotary press machine according to claim 11, wherein the press contact portion is attached to the wheel so as to be rotatable about an axis parallel to a central axis of the wheel.   13. The rotary press machine according to claim 12, wherein the press contact portion has an outer peripheral surface formed in a cylindrical surface around its axis.

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