JP2647520B2 - Tablet press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a press device used for forming a tablet such as a thermosetting resin molding material.

[Prior art]

When performing compression molding or the like using a thermosetting resin molding material or the like, it is necessary to first form a molding material that is formed into a granular form into a tablet, and then supply the tablet to a compression molding die or the like to perform molding. It has been done. As a device for forming the tablet, a press device provided with a die, an upper punch, and a lower punch is used.
In this press machine, a mortar is installed at the center of the press machine, an upper punch is installed at an upper part of the press machine, and a lower punch is installed at a lower part of the press machine. By compressing the material from above and below with an upper punch and a lower punch, a tablet can be formed. When the size of the tablet to be formed is changed in the press device, it is necessary to replace the die, the upper punch, and the lower punch with each other.

[Problems to be solved by the invention]

However, when replacing the mortar, the upper punch, and the lower punch in this way, it is necessary to individually remove the mortar, the upper punch, and the lower punch from the press device, and attach the press devices individually. There is a problem that it takes time to replace the lower punch. The present invention has been made in view of the above points, and it is an object of the present invention to provide a tablet forming press device capable of performing exchange of a die, an upper punch, a lower punch, and the like in a short time.

[Means for Solving the Problems]

The tablet forming press apparatus according to the present invention is provided with an upper guide shaft 3 protruding upward and a lower guide shaft 4 protruding downward on a fixed plate 2 to which a die 1 for tablet forming that opens vertically is mounted, and an upper punch is movable. An upper punch 6 is attached to the die 1 below the plate 5 so that the upper punch 6 can enter and exit through the upper opening. An upper connecting piece 7 is provided above the upper punch movable plate 5. The lower punch 9 to be inserted is attached and the lower punch movable plate 8 is attached.
The lower connecting piece 10 is provided on the lower side, and the upper punch movable plate 5 is slidably attached to the upper guide shaft 3 and the lower punch movable plate 8 is slidably attached to the lower guide shaft 4 to form a die set 11. The upper cylinder 13 on its top
At the bottom, the lower cylinder 14 and the upper and lower cylinders 13, 14
The fixed clamps 15 are provided at the height positions between the two, and the fixed plate 2 of the tablet 11 is detachably clamped and fixed by the fixed clamps 15, and the tip of the upper rod 16 provided on the upper cylinder 13 so as to be able to protrude downward. The upper connecting piece 7 of the upper punch movable plate 5 is removably clamped and fixed to the upper clamp member 17 and the lower punch movable plate is attached to the lower clamp member 19 at the tip of a lower rod 18 provided on the lower cylinder 14 so as to be able to protrude upward. The lower connecting piece 8 is clamped so as to be detachable.

[Operation]

In the present invention, the die 1, the upper punch 6, and the lower punch 9 can be provided integrally with the die set 11, and the die set 11 is provided on the press body 12, and the clamps 15, 17,
The mortar 1 and the upper punch 6
Press body without lower work 9 and lower punch 9
Can be attached to 12.

【Example】

Hereinafter, the present invention will be described in detail with reference to examples. FIG. 1 shows an example of a die set 11 in which a die 1 is attached to the center of a fixing plate 2. The mortar 1 is formed by providing a molding cavity 25 in the center, and the mortar 1 is attached so that the molding cavity 25 opens above and below the fixed plate 2. A pair of shafts are fixed to the left and right ends of the fixed plate 2 so as to penetrate vertically. The upper part of each shaft is formed as an upper guide shaft 3 above the upper surface of the fixed plate 2, and the lower part of each shaft is formed as a lower guide. The shaft 4 is configured to protrude downward from the lower surface of the fixed plate 2. An upper connecting plate 26 is provided between the upper ends of the upper guide shafts 3
A lower connecting plate 27 is attached to the lower end of each of the fourth and fourth bridges. The upper punch movable plate 5 is formed by providing slide cylinders 28, 28 at both ends, and has an upper punch 6 attached to the center thereof so as to protrude downward. Above the upper punch 6, the upper punch movable plate 5 is provided with an upper connecting piece 7 protruding upward, and a clamp portion 29 is provided at an upper end of the upper connecting piece 7. The upper punch movable plate 5 is attached to the fixed plate 2 via the upper guide shaft 3 by inserting the slide cylinder 28 into the upper guide shaft 3 so as to be slidable up and down. Through hole of connecting plate 26
It is inserted through 30. Upper punch movable plate 5 is upper punch 6
Are mounted so as to be located right above the mortar 1. The lower punch movable plate 8 has slide tubes 31 and 3 at both ends.
The lower punch 9 is attached to a central portion of the lower punch 9 so as to protrude upward. On the lower side of the lower punch 9, the lower punch movable plate 8 protrudes downward and has a lower connecting piece.
The lower connecting piece 10 is provided with a clamp portion 32 at the lower end thereof. The lower punch movable plate 8 is fixed to the fixed plate 2 via the lower guide shaft 4 by inserting the slide cylinder 31 slidably up and down on the lower guide shaft 4.
The lower connecting piece 10 is attached to the lower connecting plate 27.
In the through hole 33. The lower punch movable plate 8 is attached so that the upper end of the lower punch 6 is inserted into the lower end of the molding cavity 25 of the die 1. FIG. 2 shows an example of the press body 12 and a base.
Stands 35 and 35 are erected on 34 and a ceiling
36 is attached to form the frame. The upper cylinder 13 is mounted downward on the pedestal 36, and the lower cylinder 14 is mounted upward on the base 34.Supports 37, 37 are erected from the substrate 34 along the columns 35, 35, and each support A fixed clamp 15 is attached to the upper end of the body 34. The fixed clamp 15 is formed by attaching the clamp claw 15a to the bearing 15b so as to be vertically rotatable and connecting the hydraulic cylinder 15c to the rear of the clamp claw 15a. At the upper end of the support 37, a roller 38 is provided. The roller 38 is formed so that it can be moved up and down by a hydraulic mechanism. The upper cylinder 13 is provided with an upper rod 16 so as to protrude downward by hydraulic pressure, and a pair of upper clamp members 17 is attached to a clamp plate 39 provided at the tip of the upper rod 16. The upper clamp member 17 has a clamp 17a mounted on a bearing 17b so as to be rotatable up and down, and a clamp pawl 17a.
It is formed by connecting a hydraulic cylinder 17c to the rear part of the vehicle. The lower cylinder 14 is provided with a lower rod 18 so as to protrude upward by hydraulic pressure.
The clamp plate 40 provided at the tip of 18 has a pair of lower clamps
19 is attached. The lower clamp member 19 is formed by attaching a clamp claw 19a to a bearing 19b so as to be vertically rotatable and connecting a hydraulic cylinder 19c to a rear portion of the clamp claw 19a. Thus, as shown in FIG. 1, a die set 11 formed by integrally attaching the mill 1, the upper punch 6, and the lower punch 9 is formed.
Is attached to the press body 1 formed as shown in FIG.
11 is provided, and both ends 2a and 2b of the fixed plate 2 are
Place on top of 37. Rollers 38, 38 at the upper ends of the supports 37, 37
Is provided so as to protrude from the upper surface, the fixing plate 2 can be positioned by moving on the rollers 38, 38. Next, the rollers 38, 38 are moved downward by a hydraulic mechanism to move the rollers 38, 38 below the upper surfaces of the supports 37, 37, thereby to move the both ends 2a, 2a of the fixed plate 2 to the supports 3
7 and 37, the hydraulic cylinder 15c of the fixed clamp 15 is operated to rotate the clamp claw 15a, and the tip of the clamp claw 15a presses the upper surface of the end 2a of the fixed plate 2. Then, the fixed plate 2 is fixed in the press body 12 by being clamped and fixed by the fixing clamp 15. When disposing the die set 11 in the press body 12 in this manner, the clamp portion 29 of the upper connecting piece 7 is
17, the clamp portions 32 of the lower connecting piece 10 are inserted into the lower clamp members 19 respectively, and after the fixing plate 2 is fixed as described above, the upper clamp member 17 and the lower clamp members 19 are fixed.
Are operated to clamp the upper clamp 17 with the clamp portion 29 of the upper connecting piece 7 and the lower clamp 19 with the clamp portion 32 of the lower connecting piece 10, respectively. In other words, the hydraulic cylinder 17c of the upper clamp 17 is operated to rotate the clamp pawl 17a, and the tip of the clamp pawl 17a is
By pressing the lower surface of the clamp, the clamp portion 29 can be clamped between the clamp pawl 17a and the clamp plate 39 to be clamped, and the hydraulic pawl 19c of the lower clamp tool 19 is operated to release the clamp pawl 19a. By rotating and pressing the upper surface of the clamp portion 32 with the tip of the clamp claw 19a, the clamp portion 32 can be clamped and fixed between the clamp claw 19a and the clamp plate 40 (first).
In the figure, triangular marks indicate locations where the clamp claws 15a, 17a, and 19a clamp.) As described above, the die set 11 is
Clamping at 19 and mounting to the press body 12 allows the mounting in a short time without the need to individually mount the mill 1, the upper punch 6, and the lower punch 9. Also, the removal can be performed in a short time by releasing the clamp, so that the work of replacing the mill 1, the upper punch 6, and the lower punch 9 can be performed in a very short time. Each clamp 1
5, 17, and 19 can be operated by remotely controlling the hydraulic cylinders 15c, 17c, and 19c, so that the replacement work can be performed safely without putting the body in the press body 12. Yes, and because the mortar 1, upper punch 6, and lower punch 9 are built into the die set 11,
Unlike the case where these are directly attached to the press body 12, the structure of the press body 12 does not need to be complicated, and cleaning and maintenance become easy. In addition, when attaching and detaching the die set 11 to and from the press body 12, for safety reasons, the die set 11 can be attached and detached only when the upper and lower rods 16 and 18 are retracted into the upper and lower cylinders 13 and 14, respectively. It is preferable to provide a sensor for detecting the retracted position, so that the hydraulic mechanisms of the hydraulic cylinders 15c, 17c, 19c and the rollers 38 are not interlocked. Similarly, for safety, a limit switch for detecting that the die set 11 is set at a fixed position in the press body 1 is provided so that the hydraulic cylinders 15c, 17c, and 19c are not interlocked. Preferably, a pressure switch for detecting a clamping pressure by each of the clamp members 15, 17, 19 is provided so that the press operation by the upper and lower cylinders 13, 14 is non-movingly interlocked. When a tablet is formed by the tablet forming press device formed by fixing the die set 11 to the press body 12 as described above, first, a predetermined amount of the molding material is supplied into the molding space 25 of the die 1. I do. Then, the upper cylinder 13 is actuated to cause the upper rod 16 to protrude downward, thereby moving the upper punch 6 downward, and causing the upper punch 6 to protrude into the molding cavity 25 so that the upper punch 6 and the lower punch 9 The tablet can be molded by compressing the molding material. After molding the tablet, the upper rod
16 is pulled into the upper cylinder 13 and the lower cylinder 14 is operated to cause the lower rod 18 to protrude, thereby moving the lower punch 9 upward, and ejecting the tablet in the die 1 to the upper side of the die 1 to remove it. Can be.

【The invention's effect】

As described above, in the present invention, an upper guide shaft protruding upward and a lower guide shaft protruding downward are provided on a fixed plate to which a die is attached, and an upper punch is attached to a lower side of an upper punch movable plate. An upper connecting piece is provided above the movable punch plate, a lower punch is attached above the lower movable punch plate, and a lower connecting piece is provided below the lower movable punch plate. The lower punch movable plate is slidably attached to the shaft to form a die set, the upper cylinder is placed on the upper part of the press body, the lower cylinder is placed on the lower part, and the fixed clamp is placed at the height between the upper and lower cylinders. The top end of the upper rod, which is provided for each, fixedly detachably fixes the fixed plate of the die set with the fixed clamp tool, and is provided to be able to protrude downward on the upper cylinder The upper connecting piece of the upper punch movable plate is detachably clamped and fixed to the upper clamp tool, and the lower connecting piece of the lower punch movable plate is freely removable to the lower clamp tool at the end of the lower rod provided on the lower cylinder so that it can protrude upward. The die, an upper die and an upper punch, and a lower punch were integrally attached to the die.The die, upper punch, and lower punch were fixed by clamping with a clamp set on the press body. It can be attached and detached at the same time without individual work, and exchange of a die, an upper punch, a lower punch, and the like can be performed in a short time.

[Brief description of the drawings]

FIG. 1 is a front view of a die set used in one embodiment of the present invention, and FIG. 2 is a reduced front view of a press body used in the same. 1 is a die, 2 is a fixed plate, 3 is an upper guide shaft, 4
Is a lower guide shaft, 5 is an upper punch movable plate, 6 is an upper punch, 7 is an upper connecting piece, 8 is a lower punch movable plate, 9 is a lower punch, 10 is a lower connecting piece, 11 is a die set, and 12 is a press body. ,
13 is an upper cylinder, 14 is a lower cylinder, 15 is a fixed clamp, 16 is an upper rod, 17 is an upper clamp, 18 is a lower rod, and 19 is a lower clamp.

Claims (1)

(57) [Claims] An upper guide shaft protruding upward and a lower guide shaft protruding downward are provided on a fixed plate to which a vertically opening die for tablet molding is attached, and an upper surface opening of the die below the upper punch movable plate. Attach the upper punch that can freely enter and exit, and provide the upper connecting piece on the upper side of the upper punch movable plate, and attach the lower punch inserted from the lower opening to the die above the lower punch movable plate and the lower side of the lower punch movable plate The lower connecting piece is provided, and the upper punch movable plate is slidably attached to the upper guide shaft, and the lower punch movable plate is slidably attached to the lower guide shaft to form a die set. A fixed clamp is provided for the lower cylinder at the height between the upper and lower cylinders, and the fixed plate of the die set can be detached with the fixed clamp. The upper connecting piece of the upper punch movable plate is detachably clamped and fixed to the upper clamp of the upper rod, which is fixed to the upper cylinder so as to be able to protrude downward in the upper cylinder, and is provided in the lower cylinder so as to protrude upward. A tablet forming press device comprising a lower clamp piece of a lower punch movable plate fixedly detachably clamped to a lower clamp member of a rod end.