JP2002301760A - Mold for ptp sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for a PTP sheet which molds pocket parts 50 corresponding to pocket molding recesses 10 formed at prescribed intervals in the upper surface of a bottom tool A, in a plastic sheet material 5 supplied onto the upper surface of the bottom tool A cooperating with a top force B, and which can make the dimensions of the pocket parts 50 conform to those of matters 5c to be packed, without changing the mold itself, even when the thickness of the matters 5c changes within a prescribed range. SOLUTION: The bottom tool A is equipped with a bottom tool main body 1 which has vertical hollow parts 11 opened upward at prescribed intervals, movable cores 2 which are so inserted into the hollow parts 11 respectively as to be slidable between the uppermost level and the prescribed lowermost level and constitute the pocket molding recesses 10 together with the corresponding hollow parts 11, and a level regulating-holding means 2a which regulates the level of the movable cores 2 and holds it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a PTP molding die for forming a pocket portion in a plastic sheet material such as (polypropylene), and more specifically, to a flat PTP instead of a drum type.
The present invention relates to a sheet molding die.

[0002]

2. Description of the Related Art A conventional PTP sheet forming die of this type will be described with reference to FIGS. The PTP sheet molding die is composed of a horizontal lower die A and an upper die B facing the upper surface of the lower die A as shown in FIG. The lower die A is configured to move up and down by a predetermined stroke along a guide of a machine frame (not shown), and a plurality of rows of pocket forming recesses 10 are formed at regular intervals on the upper surface thereof.
The pocket forming recess 10 has a planar contour such as a circle, an oval, or an ellipse so as to correspond to the shape of a tablet or capsule packaged in a PTP sheet. In many cases, their inner peripheral surfaces are not vertical but taper with a steep angle and a downward slope, and their inner bottom surfaces have a slightly concave arc shape in cross section. In the lower die A, a cooling water flow hole 13 is formed in the lower central portion of the pocket forming recess 10 in a horizontal direction so as to intersect with the row of the pocket forming recess 10, and in a lower circumferential direction of each pocket forming recess 10. An appropriate number of air vents 12 are formed so as not to interfere with the water holes 13, and each air vent 12 is opened downward.

[0003] The upper die B is composed of a flat pressing die 3 and a protruding die 4 located above the flat pressing die 3, and the pressing die 3 and the protruding die 4 are respectively fixed along guides of a machine frame (not shown). The stroke is configured to move up and down independently. At the position corresponding to each pocket forming recess 10 of the lower die A, a vertical guide hole 30 having a plane contour corresponding to the opening plane contour of the pocket forming recess 10 is formed in the holding mold 3. On the lower surface of the protruding mold 4, protruding pieces 40 are formed so as to slightly protrude downward from the respective guide holes 30 of the holding mold 3. It is formed in a shape similar to the opening plane contour of the recess 10 and considerably smaller than the opening plane outline.

[0004] Lower mold A installed at a specific location on the packaging line
At the start of operation, the upper mold B is separated from the upper mold B by a predetermined amount in the vertical direction as shown in FIG. 9, and a long plastic sheet material 5 made of, for example, PP is intermittently supplied to the upper surface of the lower mold A. You. When the plastic sheet material 5 is supplied to the upper surface of the lower mold A and stopped, as shown in FIG. 10, the lower mold A rises by a predetermined amount, and the pressing die 3 of the upper die B descends. Is pressed against the upper surface of the lower mold A. Then, as shown in FIG.
Is lowered by a predetermined amount, and a part of the plastic sheet material 5 is protruded into each pocket forming recess 10 of the lower die A by a predetermined amount by the protrusion 40 heated to about 120 to 130 ° C. In this state, through the gap between the guide hole 30 of the pressing die 3 and the protruding piece 40 of the protruding die 4, FIG.
12, high-pressure air is supplied toward the pocket forming recess 10 as shown by an arrow a in FIG. 12, and a predetermined shape and a certain shape corresponding to the inner shape of the pocket forming recess 10 are added to a required portion of the plastic sheet material 5 as shown in FIG. The pocket portion 50 having the capacity is formed, and the molding of one frame of the PTP sheet 5a is completed. When the high-pressure air is supplied from above, the air in the pocket forming recess 10 is drawn downward from the air vent 12 by the corresponding pocket 50 formed to expand. The top portion formed from the plastic sheet material 5 into the PTP sheet 5a is knocked out from the mold by knockout pins (not shown) of the lower mold A descending to the original position and the upper mold B rising to the original position as shown in FIG. It is transported downstream of the molding die in the packaging line, and the next die of the plastic sheet material is simultaneously supplied to the molding die.
Thus, PTP sheets are formed in order. As shown in FIG. 13, the molded PTP sheet 5a is supplied with an article to be packaged 5c such as a tablet or a capsule as shown in FIG. 13 at the rear position of the packaging line, and a lid sheet 5b made of, for example, aluminum foil. Are heat sealed.

[0005]

In the conventional mold for forming a PTP sheet, a pocket having the same size (capacity) is formed by the mold as described above. Therefore, the first
If the size (particularly the thickness in the packaged state) of the articles to be packaged such as tablets and capsules is different by a certain amount or more, the molding die must be changed, which increases the equipment cost. Second, if the change in the size of the packaged item is within a certain range, the P molded by the same molding die is used.
Although a TP sheet may be used, the amount of dance (movement) in the pocket of the packaged item increases as the item to be packaged becomes smaller. ) Is deteriorated, and the quality of the packaged product is reduced, and the packaging quality is reduced.

An object of the present invention is to provide a PTP sheet molding die which does not require a change in the die itself even if the thickness of a packaged object such as a tablet or capsule changes within a certain range. . Another object of the present invention is to provide a method for manufacturing a packaged product such as a tablet or a capsule, which is effective even if the thickness of the packaged product changes within a certain range.
An object of the present invention is to provide a PTP sheet molding die that ensures compatibility with a pocket portion of a TP sheet and does not lower the packaging quality.

[0007]

According to the PTP sheet molding die of the present invention, the following problems are solved in order to solve the above-mentioned problems. That is, the PT according to claim 1
The P sheet forming die corresponds to the pocket forming concave portion 10 formed at a predetermined interval on the upper surface of the lower die A in the plastic sheet material 5 supplied to the upper surface of the lower die A cooperating with the upper die B. A molding die for molding the pocket portion 50, wherein the lower die A has a lower die main body 1 having a vertical hollow portion 11 opened upward at a predetermined interval, The movable core 2 which is slidably inserted between a level and a predetermined lowest level, and which constitutes the pocket forming recess 10 together with the corresponding hollow portion 11, and adjusts the level of the movable core 2 to adjust the level. Level adjusting and holding means 2a, wherein each of the hollow portions 11 has a vertical inner peripheral surface 1a.
The movable core 2 has a tapered inner peripheral surface 20 whose upper end contacts or approaches a predetermined level position of the vertical inner peripheral surface 11a of the corresponding hollow portion 11 and is inclined downward at a steep angle downward. And an inner bottom surface 21 that is continuous with the lower end of the tapered inner peripheral surface 20, and has an appropriate number of air vent holes 22 penetrating to the outer peripheral portion at the inner bottom surface 21 or the inner bottom peripheral edge portion,
In the vicinity of each hollow portion 11 of the lower die body 1, an air vent hole of the movable core 2 when the movable core 2 corresponding to the hollow portion 11 is at the highest level or at the lowest level. The air vent portion 12 communicating with the air vent 22 is formed.

The PTP sheet molding die according to a second aspect of the present invention is the molding die of the first aspect, wherein a peripheral edge portion 11b having a small arc-shaped cross section is formed at an upper end portion of each of the hollow portions 11. The upper end of the vertical inner peripheral surface 11a of the portion 11 is continuous inside the peripheral edge 11b, and the upper end of the tapered inner peripheral surface 20 of each movable core 2 is such that the movable core 2 is at the highest level. The corresponding peripheral edge 11b of the hollow portion 11
Is characterized by being in contact with or close to the inside of the.

The PTP sheet forming die according to the third aspect is formed at a predetermined interval on the upper surface of the lower die A on the plastic sheet material 5 supplied to the upper surface of the lower die A cooperating with the upper die B. A molding die for molding a pocket portion 50 corresponding to the formed pocket molding concave portion 10, wherein the lower mold A has a lower mold main body 1 having a vertical hollow portion 11 opened upward at a predetermined interval. A movable core 2 which is slidably inserted from the highest level to a predetermined lowest level into each of the hollow portions 11 and forms the pocket forming recess 50 together with the corresponding hollow portion 11; Level adjusting and holding means 2a for adjusting the level of the movable core 2 and maintaining the level. Each of the hollow portions 11 has a vertical inner peripheral surface 11a. Below the vertical inner peripheral surface 11a Which has an inner bottom surface 21 connected to the level position or proximity, bleeding hole 2 of a suitable number of through to the inner bottom surface 21 or the inner bottom surface circumferential edge portion outer peripheral portion in the vicinity
In the vicinity of each hollow portion 11 of the lower die body 1,
When the movable core 2 corresponding to the hollow portion 11 is at the highest level or the lowest level, the air vent portion 12 communicating with the air vent hole 22 of the movable core 2 is formed. And

A PTP sheet molding die according to a fourth aspect of the present invention is the molding die of the third aspect, wherein a peripheral edge portion 11b having a small circular cross section is formed at an upper end portion of each of the hollow portions 11. A vertical inner peripheral surface 11a of the hollow portion 11 is formed continuously to the peripheral edge portion 11b.

According to a fifth aspect of the present invention, there is provided a PTP sheet molding die according to any one of the first to fourth aspects, wherein the inner bottom surface 21 of the movable core 2 is formed in a slightly concave arc shape in cross section. It is characterized by having.

According to a sixth aspect of the present invention, in the molding die of any one of the first to fifth aspects, each of the movable cores 2 is connected to a substantially horizontal common support member 2b. A screw jack which is screwed into a nut portion 2d provided in a penetrating manner on a machine frame 2c which operates integrally with the lower die body 1, and which raises and lowers the support member 2b by a screwdriver operation. It is characterized by being a member.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a mold for forming a PTP sheet according to the present invention will be described with reference to FIGS.

First Embodiment FIG. 1 is a partial sectional view showing a first embodiment (corresponding to claims 1, 2, 5 and 6) of a PTP sheet molding die according to the present invention, and FIG. 2 is a PTP sheet of FIG. FIG. 3 is a partially enlarged exploded cross-sectional view of the lower mold of the molding die, FIG. 3 is a partially enlarged cross-sectional view of the lower mold of the PTP sheet molding die of FIG. 1, and FIG. FIG. 5 is a partially enlarged sectional view of a state where the movable core is lowered by a predetermined level from the state of FIG. 3, and FIG. 5 is a partially enlarged sectional view of a lower mold in the state of FIG.

The PTP molding die of this embodiment is composed of a lower die A installed horizontally and an upper die B cooperating with the upper part of the lower die A in a horizontal posture. Upper die B
Is configured in the same manner as the upper mold B of the conventional molding die shown in FIG.

The lower die A slides between the uppermost level and the lowermost level of the lower die body 1 having a vertical hollow portion 11 opened upward at a predetermined interval. The movable core 2 is inserted so as to be capable of forming the pocket forming recess 10 together with the corresponding hollow portion 11. The lower die A is provided with a level adjusting and holding means 2a for adjusting the level of the movable core 2 and maintaining the level. The main body 1 and the movable core 2 of the lower mold A are configured to move up and down integrally in a predetermined range along a guide of a machine frame (not shown) during operation. Lower mold A
As described above, it is preferable that the lifting / lowering operation is performed in a timely manner, but the lifting / lowering operation may be performed without any problem.

Each hollow portion 11 has a uniform planar contour and a uniform size, and is formed so as to form a plurality of rows at a uniform interval with respect to the lower mold body 1 and to maintain a constant interval. . As shown in FIGS. 2 and 5, each hollow portion 11 is formed with a peripheral portion 11 b having a small arc-shaped cross section at the upper peripheral portion, and has a vertical inner peripheral surface 11 a continuous with the inner edge of the peripheral portion 11 b. Is formed.

Each movable core 2 has a hollow portion 1 corresponding to the upper end.
A tapered inner peripheral surface 2 that is inclined downward at a steep angle in contact with or close to a predetermined level position of the vertical inner peripheral surface 11a
0, and an inner bottom surface 21 which is continuous with the lower end of the tapered inner peripheral surface 20. The upper portions thereof have a substantially cup-like shape. They also have a hollow portion 11 corresponding to the outer peripheral surface.
Is configured to be able to move up and down in a certain range in the vertical direction while sliding on the vertical inner peripheral surface 11a. Inner bottom surface 21
Is formed so that its cross section is slightly concave.
In this embodiment, when each movable core 2 is located at the highest level, the upper end of the tapered inner peripheral surface 20 is located inside the corresponding peripheral portion 11 b of the hollow portion 11, that is, inside the vertical portion of the hollow portion 11. It is configured to contact the upper end of the peripheral surface 11a.

Each of the movable cores 2 may be configured so that the level is individually adjusted and held by the respective level adjustment and holding means 2a. In this embodiment, all the movable cores are configured as follows. 2 are simultaneously and uniformly adjusted in level, and are held at the adjusted position.
As shown in FIG. 1, each movable core 2 is connected and supported by a bolt 23 to a lower substantially horizontal common support member 2b, and both ends of the lower core body 1 are provided below the support member 2b. Are connected to the flanges at both ends of the lower mold main body 1 so as to move up and down integrally with the lower die body 1. At a substantially central portion of the machine frame 2c, a nut portion 2d is provided in a penetrating manner, and a level adjustment holding means 2a including a screw jack member 2a 'is screwed into the nut portion 2d, and the screw jack member 2a' The upper end is connected to a substantially central portion of the support member 2b via a bearing 24.
Therefore, by operating the screw jack member 2a 'by screwing, each movable core 2 can be moved through the support member 2b.
Level is adjusted and held.

As shown in FIGS. 2 to 4, the lower die body 1 is provided with water holes 13 for cooling water in the vicinity of the hollow portions 11 in a direction crossing the rows of the hollow portions 11 horizontally. The movable core 2 in the hollow portion 11 is configured to be cooled to, for example, about 16 ° C. In each movable core 2, an appropriate number of air vent holes 22 penetrating to the outer peripheral portion are formed in the peripheral portion of the inner bottom surface 21, while in the vicinity of each hollow portion 11 of the lower mold body 1 in the circumferential direction, When the movable core 2 is at the highest level or at the lowest level, the air vent portion 12 communicating with the air vent hole 22 of the movable core 2 is formed to be open downward.

According to the PTP sheet molding die of the first embodiment, when a plastic sheet material 5 such as PP is supplied on the upper surface of the lower mold body 1 as shown in FIG. The lower die A rises by a predetermined amount and the presser die 3 moves down, and presses the plastic sheet material 5 to a portion other than the hollow portion 11 of the lower die main body 1. Thereafter, the PTP sheet 5a having a large number of pockets 50 is formed as shown in FIG. 3 in the same manner as in the conventional mold shown in FIGS. 11 and 12.
In FIG. 3, the movable core 2 is located at the highest level, and the pocket portion 50 of the molded PTP sheet 5a is the shallowest. Therefore, in a process after the packaging line, a packaged object (tablet in this example) 5c having a thickness corresponding to the depth is supplied to the pocket portion 50, and as shown in FIG.
In a state where the lid sheet 5b is heat-sealed on the upper surface of the TP sheet 5a, the packaged object 5c and the pocket portion 50 can be optimally fitted. Since the amount of movement (movement) of the packaged object 5c in the pocket portion 50 is minimized, a decrease in the quality of the packaged object is prevented and the best packaging quality is guaranteed.

On the other hand, when forming a PTP sheet for packaging the packaged object 5c which is thicker by d than the packaged object 5c of FIG. 3 as shown in FIG. 4, the level adjustment holding means 2a is used. The screw jack member 2a 'in FIG. 1 is screwed down in the downward direction, and the level of each movable core 2 is adjusted to
It is lowered by h in the figure to correspond to the difference d between the thicknesses. When the PTP sheet 5a is formed in this state,
Since the TP sheet 5a is formed with the pocket portion 50 having a depth equal to the level difference h (that is, the difference d in the thickness of the packaged object 5c) adjusted as shown in FIG. Even when the article 5c is supplied and packaged, the article to be packaged 5c and the pocket 50 can be optimally matched. Therefore, according to the PTP sheet molding die of the first embodiment, even if the thickness of the packaged object 5c is changed within a certain range, the packaged object 5c and the pocket portion 50 are optimized without changing the mold. Therefore, the equipment cost of the packaging line is reduced.

As described above, when the level of each movable core 2 is reduced by the level difference h from the highest level as shown in an enlarged view in FIG. 5, the level difference h is added to the pocket portion of the PTP sheet. Although a vertical body portion having a corresponding height is formed, the level difference h is small, so that the robustness and other qualities of the pocket portion are not reduced. The maximum allowable adjustment amount of the level of the movable core 2 is appropriately set depending on the size of the planar outline of the packaged object 5c and other factors. However, the planar outline of the packaged object 5c is circular, and the PTP sheet 5a When the plane outline of the opening of the pocket portion 50 is circular and its diameter is about 10 mm, the maximum allowable adjustment amount is preferably about 1 mm.

The movable core 2 has a tapered inner peripheral surface 20 which is inclined at a steep angle and descends downward, and the pocket portion 50 of the PTP sheet 5a to be formed is also formed so as to gradually widen in the opening direction. Therefore, when the article to be packaged 5c is loaded into the pocket portion 50 at the rear position of the packaging line, it can be more smoothly loaded. The inner bottom surface 21 of the movable core 2 is formed so as to have a slightly concave arc shape in cross section, and the bottom of the pocket portion 50 is also formed so as to correspond to the shape. When the bottom of the package is pushed to the opposite side to push the packaged product, the package can be pushed more smoothly.

Second Embodiment FIG. 6 is a partially enlarged sectional view showing a second embodiment of a molding die according to the present invention. In the first embodiment, when the movable core 2 is located at the highest level, the upper end of the tapered inner peripheral surface 20 of the movable core 2 has a small arc-shaped peripheral portion 11 b in the hollow portion 11 of the lower die body 1. , That is, to contact the upper end of the vertical inner peripheral surface 11a.
The upper end of the tapered inner peripheral surface 20 has an edge shape, and there is a danger that the hand or the like may be damaged during the assembling work, and the edge-shaped upper end may be fragile and easily broken. is there. Therefore, in this embodiment, the upper end edge of the tapered inner peripheral surface 20 of the movable core 2 is formed in a small arc shape in section toward the inside, and when the movable core 2 is at the highest level, the tapered inner peripheral surface is The upper end portion 20 is configured to approach slightly below the inner peripheral portion 11b of the corresponding hollow portion 11 having a small arc-shaped cross section. In this embodiment, the upper end portion of the vertical inner peripheral surface 11a of the hollow portion 11 appears between the inside of the peripheral edge portion 11b of the hollow portion 11 and the upper end portion of the tapered inner peripheral surface 20 to form a step portion 11d. But this step 11
Since d is small, when the PTP sheet 5a having the pocket portion 50 is formed, a prominent step corresponding to the step 11d is not formed on the outer periphery of the base of the pocket 50. Other configurations and operational effects of the molding die of this embodiment are as follows.
The description is omitted because it is almost the same as the molding die of the first embodiment.

Third Embodiment FIG. 7 is a partially enlarged sectional view showing a molding die according to a third embodiment of the present invention. In this embodiment, the hollow portion 11 of the lower die body 1 has a small arc-shaped peripheral edge portion 11b formed at an upper end portion, and a tapered inner portion inclined downward at a steep angle so as to be continuous inside the peripheral edge portion 11b. A peripheral surface 11c is formed, and the inner peripheral surface 11a perpendicular to the lower edge of the tapered inner peripheral surface 11c is configured to be continuous. Then, the taper of the tapered inner peripheral surface 20 of the movable core 2 is set to the tapered inner peripheral surface 11c.
When the movable core 2 is at the highest level, the upper end of the tapered inner peripheral surface 20 is positioned at the lower edge of the tapered inner peripheral surface 11c of the hollow portion 11 (vertical edge). (The upper edge of the inner peripheral surface 11a). In this embodiment, when the level of the movable core 2 is adjusted downward by the level difference h, a vertical inner peripheral surface 11a corresponding to the level difference h appears inside the pocket forming recess 10, so that the PTP to be formed is formed. A vertical trunk portion corresponding to the level difference h is formed in the pocket portion of the sheet, but since the trunk portion is very short, the quality of the pocket portion, such as the robustness, is not reduced. The other configurations, functions and effects of the molding die of this embodiment are almost the same as those of the molding die of the first embodiment, and therefore description thereof is omitted.

Fourth Embodiment FIG. 8 shows a fourth embodiment of a molding die according to the present invention.
FIG. In this embodiment, each hollow portion 11 of the lower die body 1 has a peripheral edge portion 11b having a small circular cross section at the upper end and a vertical inner peripheral surface 11a formed to be continuous inside the peripheral edge portion 11b. It has holes. A movable core 2 having a tray-like inner bottom surface 21 whose cross section is formed in a slightly concave arc shape is inserted into each hollow portion 11 so as to move up and down in a predetermined range. The upper edge of the inner bottom surface 21 of the movable core 2 is a vertical inner peripheral surface 11 a of the hollow portion 11.
Is in contact with a relatively lower level position. According to the molding die of this embodiment, the tapered inner peripheral surface is not formed in the pocket portion of the PTP sheet to be molded, and the vertical inner periphery of the hollow portion 11 which appears in the upper peripheral direction of the inner bottom surface 21. Face 1
Corresponding to 1a, the body of the pocket to be molded is formed in a cylindrical shape, so that the PTP sheet to be molded uses less plastic. The other configurations, functions and effects of the molding die of this embodiment are almost the same as those of the molding die of the first embodiment, and therefore description thereof is omitted.

Other Embodiments The molding die according to the present invention is characterized by the structure of the lower die A as described above. For example, as shown by a solid line in FIG. 5, a peripheral portion 11b having a small arc-shaped cross section is formed at the upper end of the hollow portion 11 of the lower die body 1, and an inner vertical portion is formed so as to be continuous with the peripheral edge inside the peripheral portion 11b. When the movable core 2 is at the highest level when the peripheral surface 11a is formed,
Taper inner peripheral surface 2 of movable core 2 corresponding to hollow portion 11
0 may be configured to contact a level position lower by a predetermined amount than the inside of the peripheral portion 11b. In embodiments other than the second embodiment, the movable core 2
The upper edge of the tapered inner peripheral surface 20 can be formed in a small arc shape in cross section as in the second embodiment. Further, for example, as in the embodiment of FIG. 7, a peripheral portion 11b having a small circular cross section is formed above the hollow portion 11, and a long tapered inner peripheral surface 11c is formed so as to be continuous with the inner edge line of the peripheral portion 11b. When the movable core 2 is at the highest level, the inner peripheral surface 21 of the movable core 2 having the inner bottom surface 21 on the upper surface as shown in FIG. It can also be implemented by contacting or approaching the lower end edge of the. In each of the above embodiments, each hollow portion 11 of the lower die main body 1 is penetrated above and below the main body 1, but these hollow portions 11 are opened upward to change the level of the movable core 2. The hollow portions 11 do not need to be penetrated so as to reach below the lower mold main body 1 as long as the hollow portions 11 are in a state where they can be made to work.

[0029]

According to the PTP sheet molding die according to the first aspect of the present invention, the lower die A has a vertical hollow portion 11 at a position corresponding to the pocket forming recess 10.
And a movable core 2 that slides into the hollow portion 11 within a predetermined range, and a level adjustment holding unit 2a that adjusts the level of the movable core 2 and maintains the level. Therefore, first, even if the thickness of the packaged object 5c is changed within a certain range, the packaged item 5c and the pocket portion 50 can be optimally fitted without changing the mold, and the packaging line Equipment costs are reduced. Second, a PTP sheet can be formed so that the packaged object 5c and the pocket portion 50 can be optimally fitted in accordance with the thickness of the packaged object 5c, and the quality of the packaged object 5c can be reduced. It can be prevented from inviting or lowering the packaging quality. Third, when the pocket portion 50 is formed in the PTP sheet, a tapered inner peripheral surface is formed in the pocket portion 50, so that the article to be packaged 5c is more smoothly supplied into the pocket portion 50 at the rear line. Can be supplied to Fourth, by reducing the maximum adjustment level difference h of the movable core 2 according to the planar contour and the size of the article to be packaged 5c, the robustness of the pocket portion 50 formed in the PTP sheet to be molded and other factors. The quality does not decrease.

According to the PTP sheet molding die according to the second aspect of the present invention, a peripheral edge portion 11b having a small circular cross section is formed at the upper end of each hollow portion 11, and the vertical inner periphery of each hollow portion 11 is formed. The upper end of the surface 11a is continuous with the inside of the peripheral edge 11b, and the upper end of the tapered inner peripheral surface 20 of each movable core 2 has a hollow portion corresponding to when the movable core 2 is at the highest level. 11 is in contact with or close to the inside of the peripheral edge portion 11b. Therefore, since the vertical body formed in the pocket portion 50 of the PTP sheet 5a to be formed is formed at the base of the pocket portion 50, it is possible to further prevent deterioration in the rigidity and other quality of the pocket portion 50. .

The PTP according to the third and fourth aspects of the invention
According to the sheet forming die, the body of each pocket 50 of the PTP sheet to be formed is a vertical body, so that the amount of plastic used in the formed PTP sheet is smaller.

According to the PTP sheet forming die according to the fifth aspect of the present invention, the inner bottom surface 21 of each movable core 2 is formed so as to have a slightly concave arc-shaped cross section, and the pocket portion 50 of the PTP sheet is formed. The bottom of the pocket 50 is also formed so as to correspond to its shape, so that when the bottom of the pocket 50 is pushed to the opposite side after being packaged, the article to be packaged can be pushed more smoothly.

According to the PTP sheet molding die according to the sixth aspect of the present invention, each movable core 2 is connected to a substantially horizontal common support member 2b, and the level adjustment holding means 2a is provided.
Is a screw jack member that is screwed into a nut portion 2d provided in a penetrating manner into a machine frame 2c that operates integrally with the lower die body 1, and that raises and lowers the support member 2b by a screwdriver operation. Can be adjusted and held simultaneously and uniformly by leveling the required amount of movable cores 2.

[Brief description of the drawings]

FIG. 1 is a partial sectional view showing a first embodiment of a PTP sheet molding die according to the present invention.

FIG. 2 is a partially enlarged exploded sectional view of a lower die of the PTP sheet molding die of FIG.

FIG. 3 is a partially enlarged cross-sectional view of a lower die of the PTP sheet molding die of FIG. 1;

FIG. 4 shows a lower mold of the PTP sheet molding die of FIG.
FIG. 4 is a partially enlarged sectional view of a state where a movable core is lowered by a predetermined level from the state of FIG. 3.

FIG. 5 is a partially enlarged sectional view of the lower mold in the state of FIG. 4;

FIG. 6 is a partially enlarged sectional view showing a second embodiment of a molding die according to the present invention.

FIG. 7 is a partially enlarged sectional view showing a third embodiment of a molding die according to the present invention.

FIG. 8 is a partially enlarged sectional view showing a fourth embodiment of a molding die according to the present invention.

FIG. 9 is a partial cross-sectional view showing one embodiment of a conventional PTP sheet molding die.

FIG. 10 is a partially enlarged cross-sectional view showing an initial process of forming a PTP sheet using the forming die of FIG.

FIG. 11 is a partially enlarged cross-sectional view showing the next step of forming a PTP sheet using the forming die of FIG.

FIG. 12 is a partially enlarged cross-sectional view showing a further next step of forming a PTP sheet using the forming die of FIG. 9;

FIG. 13 is a partially enlarged cross-sectional view showing a state in which an article to be packaged is packaged in a molded PTP sheet.

[Explanation of symbols]

 Reference Signs List A Lower die B Upper die 1 Lower die main body 10 Pocket forming concave part 11 Hollow part 11a Vertical inner peripheral surface 11b Peripheral edge 11c Tapered inner peripheral surface 12 Air vent 13 Coolant circulation hole 2 Movable core 20 Taper inner periphery Surface 21 Inner bottom surface 22 Air vent hole 23 Bolt 24 Bearing 2a Level adjustment holding means 2a 'Screw jack member 2b Support member 2c Machine frame 3 Pressing die 30 Guide hole 4 Projection mold 40 Projection molded piece 5 Plastic sheet material 5a PTP sheet 5b Lid sheet 5c Packaged item 50 Pocket

Claims (6)

[Claims] 1. A plastic sheet material (5) supplied to an upper surface of a lower mold (A) cooperating with an upper mold (B), and pockets formed at predetermined intervals on the upper surface of the lower mold (A). A molding die for molding a pocket portion (50) corresponding to a molding concave portion (10), wherein the lower die (A) has a vertical hollow portion (11) opened upward at a predetermined interval. The lower mold body (1) is slidably inserted between the uppermost level and a predetermined lowermost level into each of the hollow portions (11).
A movable core (2) constituting the pocket forming recess (10) together with 1), and a level adjusting and holding means (2a) for adjusting the level of the movable core (2) to maintain the level; Each hollow part (11) has a vertical inner peripheral surface (11a), and each movable core (2) has a hollow part (1) corresponding to the upper end.
A tapered inner peripheral surface (20) which contacts or approaches a predetermined level position of the vertical inner peripheral surface (11a) of 1) and is inclined downward at a steep angle downward, and to a lower end portion of the tapered inner peripheral surface (20). And a continuous inner bottom surface (21).
1) or an appropriate number of air vent holes (22) penetrating to the outer peripheral portion at the inner bottom peripheral portion, and near the hollow portions (11) of the lower die body (1), the hollow portions (11) are provided. ) When the movable core (2) is at the highest level or at the lowest level, the air vent (1) communicates with the air vent hole (22) of the movable core (2).
2. A mold for molding a PTP sheet, wherein 2) is formed. 2. An upper end portion of each hollow portion (11) is formed with a peripheral edge portion (11b) having a small arc-shaped cross section, and an upper end portion of a vertical inner peripheral surface (11a) of each hollow portion (11). Is continuous inside the peripheral portion (11b), and the upper end of the tapered inner peripheral surface (20) of each movable core (2) is positioned when the movable core (2) is at the highest level. 2. The PTP mold according to claim 1, wherein the PTP molding die is in contact with or close to the inside of the corresponding peripheral portion (11 b) of the hollow portion (11). 3. 3. A plastic sheet material (5) supplied to an upper surface of a lower mold (A) cooperating with an upper mold (B), and pockets formed at predetermined intervals on the upper surface of the lower mold (A). A molding die for molding a pocket portion (50) corresponding to a molding concave portion (10), wherein the lower die (A) has a vertical hollow portion (11) opened upward at a predetermined interval. The lower mold body 1 is slidably inserted between the uppermost level and a predetermined lowermost level into each of the hollow portions (11), and the corresponding hollow portions (11) are inserted.
A movable core (2) constituting the pocket forming recess (10), and a level adjustment holding means (2a) for adjusting the level of the movable core (2) to maintain the level. The part (11) has a vertical inner peripheral surface (11a), and each of the movable cores (2) has a hollow part (1
An inner bottom surface (21) contacting or approaching a predetermined lower level position of the vertical inner peripheral surface (11a) of 1);
In the vicinity of the inner bottom surface (21) or the inner bottom surface peripheral portion, there is provided an appropriate number of air vent holes (22) penetrating to the outer peripheral portion, and in the vicinity of each hollow portion (11) of the lower die body (1), When the movable core (2) corresponding to the hollow part (11) is at the highest level or at the lowest level, the air vent part (22) communicating with the air vent hole (22) of the movable core (2). 1
2. A mold for molding a PTP sheet, wherein 2) is formed. 4. A peripheral portion (11b) having a small arc-shaped cross section is formed at the upper end of each of the hollow portions (11), and the vertical portion of the hollow portion (11) is continued to the peripheral portion (11b). The PTP sheet molding die according to claim 3, wherein an inner peripheral surface (11a) is formed. 5. A PTP sheet according to claim 1, wherein the inner bottom surface of the movable core has a slightly concave arc shape in cross section. Mold. 6. The movable core (2) is connected to a substantially horizontal common support member (2b), and the level adjustment holding means (2a) is integrated with the lower die body (1). A nut (2) penetratingly provided to the operating machine frame (2c)
The PTP sheet molding die according to any one of claims 1 to 5, characterized in that it is a screw jack member which is screwed into d) and which raises and lowers the support member (2b) by a screwdriver operation.