JP6937224B2 - Glass container molding equipment - Google Patents

Description

The present invention relates to a glass container molding apparatus.

As a glass container molding device for molding a glass container from a parison, a plate supported by a base, a bottom mold placed on the plate and forming the bottom of the glass container, and a bottom mold placed on the top of the bottom mold are arranged. Those having a pair of finishing molds forming a side portion of a glass container are known. The bottom mold is positioned in the horizontal direction by steps, protrusions, positioning pins, etc. provided on the upper surface of the plate (for example, Patent Document 1).

China Utility Model 206127106

The bottom mold is formed of cast iron or the like and has a relatively large mass. Therefore, it is advantageous not to restrain the bottom mold to the plate with bolts or the like in terms of ease of replacement work of the bottom mold when changing the production type. However, if the center of the bottom mold is projected in order to form a convex portion (so-called push-up, raised bottom) protruding upward in the center of the bottom of the glass container, the temperature of the central portion of the bottom mold tends to rise, and molding is performed. It becomes difficult to separate from the glass container. In this case, when the molded glass container is pulled out upward from the bottom plate, there is a problem that the bottom mold pulled by the glass container falls off from the plate. The higher the push-up, the more difficult it is for the molded glass container to separate from the bottom mold, making the problem even more pronounced.

In view of the above background, it is an object of the present invention to prevent the bottom mold from falling off from the plate in the glass container molding apparatus without impairing the workability of replacing the bottom mold.

In order to solve the above problems, one aspect of the present invention is a glass container molding apparatus (1) for molding a glass container from a parison, which includes a plate (10) provided on a base (2) and a plate (10). A bottom mold (15) placed on the plate to form the bottom of the glass container and a pair of finishing molds (64) placed on the top of the bottom mold to form the side portion of the glass container. A shaft portion (21) projecting from the upper surface (11) of the plate or the lower surface (35) of the bottom mold, and an expanded head portion provided at the tip of the shaft portion and wider than the shaft portion. A locking projection (20) having (22) and a locking groove (40) extending from the upper surface of the plate facing the locking projection or the lower surface of the bottom mold and capable of receiving the locking projection. The opening edge at one end of the locking groove is provided with a locking wall (45) that protrudes in the width direction of the locking groove and regulates the withdrawal of the expanded head. ..

According to this aspect, the locking projection is locked to the locking wall, thereby restricting the upward movement of the bottom mold with respect to the plate. This makes it possible to prevent the bottom mold from separating from the plate even if the bottom mold is pulled by the glass container when the molded glass container is separated from the bottom mold. Since the locking projection and the locking wall can be connected or separated by moving the bottom plate in the horizontal direction with respect to the plate, the bottom mold can be easily replaced.

Further, in the above aspect, a male screw (28) is formed at the base end of the shaft portion, and a female screw hole (29) into which the male screw is screwed is formed on the upper surface of the plate or the lower surface of the bottom mold. It is good to be there.

According to this aspect, the locking projection can be easily attached to the bottom mold or plate.

Further, in the above aspect, it is preferable that the plate and the bottom mold are rotatably connected via a support shaft (17), and the locking groove extends in the circumferential direction about the support shaft. ..

According to this aspect, the center position of the bottom mold with respect to the plate is determined by fitting the support shaft into the fitting hole. Further, by rotating the bottom mold with respect to the plate, the locking projection and the locking wall can be connected or separated.

Further, in the above aspect, the bottom mold is provided on the bottom plate portion (33) constituting the lower surface, the neck portion (51) extending upward from the upper surface of the bottom plate portion, and the upper portion of the neck portion, and the mold surface is provided on the upper surface. The pair of finishing molds may have a first holding portion (68) for holding the neck portion and the outer peripheral portion of the head portion on their mating surfaces.

According to this aspect, the relative positions of the bottom mold and the pair of finishing molds are determined.

Further, in the above aspect, the bottom mold has a positioning portion (60) projecting from the upper surface of the bottom plate portion, and the pair of finishing molds sandwich the positioning portion between their mating surfaces. It is preferable to have two sandwiching portions (69).

According to this aspect, the relative positions of the bottom mold and the pair of finishing molds are determined.

Further, in the above aspect, two bottom molds are provided on the plate so as to be adjacent to each other, and each of the bottom molds is formed on a flat surface orthogonal to the radial direction at a portion of the outer peripheral portion facing each other. Each of the bottom molds has a cutout surface (71), and each of the bottom molds is arranged so that a virtual plane extrapolating one outer peripheral surface of the bottom mold intersects with the other cutout plane of the bottom mold. good.

According to this aspect, when only one of the bottom molds tries to rotate, one of the bottom molds abuts against the other of the bottom molds and the rotation is restricted. Therefore, when the bottom mold rotates, it is necessary for the two bottom molds to rotate at the same time. As a result, it is possible to prevent only one of the bottom molds from rotating to disengage the locking projection and the locking wall.

According to the present invention, in the glass container molding apparatus, it is possible to suppress the bottom mold from falling off from the plate without impairing the replaceability of the bottom mold.

Side view showing a molding apparatus Sectional view showing distributor plate, bottom mold, and finish mold Top view of distributor plate Bottom view of the bottom plate of the bottom type (A) VA-VA cross-sectional view of FIG. 4, (B) VB-VB cross-sectional view of FIG. Explanatory drawing of two bottom molds in a fixed position viewed from above Explanatory view of the two bottom molds in the detachable position as seen from above Explanatory drawing of a modification in which three or more bottom molds are provided on a distributor plate.

Hereinafter, embodiments of the present invention will be described. The glass container molding apparatus according to the present embodiment executes a step of molding a parison from a glass gob and a step of molding a glass container from the parison.

As shown in FIG. 1, the molding apparatus 1 has a reversing arm 3 rotatably supported by a base 2. The reversing arm 3 has a rotation center extending in the horizontal direction, and rotates between an initial position and a reversing position rotated by 180 ° with respect to the initial position. At least one mouth mold 4 is supported at the tip of the reversing arm 3. The mouth mold 4 is arranged above the reversing arm 3 when the reversing arm 3 is in the initial position. Each mouth mold 4 has a split mold having a mating surface extending vertically and a guide ring arranged between the pair of split molds. Each of the pair of split molds and the guide ring is supported by the reversing arm 3. The base is provided with a plunger that passes through the guide ring and rushes between the split molds when the mouth mold is in the initial position.

A pair of rough molds 5 are arranged above each mouth mold 4. The pair of rough molds 5 have a mating surface extending vertically, and are arranged so as to sandwich the mouth mold 4 from the side at the lower end portion. The pair of rough molds 5 form a shape corresponding to the side portion of the parison on the mating surface. The upper end opening of the rough mold 5 is closed by the baffle 6 so as to be openable and closable.

The step of molding the parison from the glass gob is performed by, for example, blow-and-blow molding. First, the gob is thrown into the mouth mold 4 and the rough mold 5 with the baffle 6 retracted. Next, the upper end of the rough mold 5 is closed by the baffle 6, and settle air is injected from the baffle 6 to press the gob against the mouth mold 4 to form the mouth portion of the parison. Next, air is injected into the inside of the mouth portion from between the split mold of the mouth mold 4 and the plunger to expand the gob, and the gob is pressed against the rough mold 5 and the baffle 6 to form the side portion and the bottom portion 43 of the parison. .. As a result, a parison is formed. Next, the plungers of the baffle 6 and the mouth mold 4 are retracted, and the pair of rough molds 5 are opened to expose the parison. In this state, the parison is supported by the mouth mold 4 at the mouth. Then, when the reversing device moves to the reversing position, the parison is flipped so that the mouth portion is located at the upper end, and the parison is suspended from the mouth mold 4. In other embodiments, the parison may be molded by press-and-blow molding or narrow neck press-and-blow molding instead of blow-and-blow molding.

In the base 2, a distributor plate 10 is provided below the mouth mold 4 in the inverted position. As shown in FIGS. 2 and 3, the distributor plate 10 is a plate-shaped member formed of a metal such as iron, and has a horizontal upper surface 11. The upper surface 11 of the distributor plate 10 is formed in a substantially rectangular shape and has two substantially square regions 12, 13. Each region 12 and 13 has substantially the same configuration. In each of the regions 12 and 13, a bottom mold 15 for forming the bottom 43 of the glass container is arranged. The bottom mold 15 is made of a metal such as tool steel.

A first support hole 16 which is a bottomed circular hole is recessed in the central portion of each region 12 and 13 of the upper surface 11 of the distributor plate 10. A cylindrical support shaft 17 is detachably fitted in the first support hole 16. The upper end of the support shaft 17 projects above the first support hole 16.

Locking protrusions 20 are projected from the regions 12 and 13 of the upper surface 11 of the distributor plate 10. As shown in FIGS. 2 and 5, the locking projection 20 is provided at a shaft portion 21 having a circular cross section extending vertically and at the tip (upper end) of the shaft portion 21, and is wider than the shaft portion 21. And have. The expanding head 22 is formed in a disk shape and is provided coaxially with the shaft portion 21. The diameter of the expanding head 22 is larger than the diameter of the shaft portion 21. A tool engaging groove 23 for engaging with a tool such as a screwdriver is formed on the upper end surface of the expanding head 22. The shaft portion 21 has a small diameter portion 25 on the base end (lower end) side and a large diameter portion 26 having a diameter larger than that of the small diameter portion 25 on the tip end side. At the boundary between the small diameter portion 25 and the large diameter portion 26, a shoulder surface 27 forming a surface perpendicular to their axes is formed. Male threads 28 are formed on the outer peripheral surface of the small diameter portion 25. Bottomed female screw holes 29 are formed in the regions 12 and 13 of the upper surface 11 of the distributor plate 10. By screwing the male screw 28 into the female screw hole 29, the locking projection 20 is fixed in a state where the expanding head 22 and the large diameter portion 26 project upward from the upper surface 11 of the distributor plate 10. When the shoulder surface 27 comes into contact with the upper surface 11 of the distributor plate 10, the amount of protrusion of the locking projection 20 from the upper surface becomes constant.

As shown in FIGS. 2 and 3, a plurality of first vents 31 penetrating the distributor plate 10 vertically are formed in the regions 12 and 13 of the upper surface 11 of the distributor plate 10.

As shown in FIG. 2, each bottom mold 15 has a bottom plate portion 33. The bottom plate portion 33 is formed in a substantially disk shape and has a horizontal upper surface 34 and a lower surface 35. A second support hole 37, which is a bottomed circular hole, is recessed in the center of the lower surface 35 of the bottom plate portion 33 along the central axis A of the bottom mold 15. The second support hole 37 is formed so that the cylindrical support shaft 17 can be fitted.

As shown in FIGS. 4 and 5, a locking groove 40 capable of receiving the locking projection 20 is formed on the lower surface 35 of the bottom plate portion 33. The locking groove 40 extends in the circumferential direction about the central axis A. One end of the locking groove 40 in the longitudinal direction (circumferential direction) is referred to as a locking end 41, and the other end is referred to as an insertion end 42. Further, the width of the locking groove 40 means the length in the direction orthogonal to the longitudinal direction.

The width of the bottom 43 (upper part) of the locking groove 40 is formed to be larger than the diameter of the expanding head 22 at the insertion end 42 and the locking end 41. As a result, the expanding head 22 of the locking projection 20 can move in the longitudinal direction from the insertion end 42 to the locking end 41 at the bottom 43 of the locking groove 40. A pair of locking walls 45 projecting inward in the width direction of the locking groove 40 are formed on the opening edge 44 (lower end portion) of the locking end 41 of the locking groove 40. A slit 46 extending in the longitudinal direction is formed between the pair of locking walls 45 facing each other. The width of the slit 46 is smaller than the diameter of the expanding head 22 and larger than the diameter of the shaft portion 21. Due to the locking wall 45, the locking end 41 of the locking groove 40 is narrower at the opening edge 44 than the bottom 43. At the insertion end 42 of the locking groove 40, the width of the opening edge 44 is equal to the bottom 43 and is formed larger than the diameter of the widened head 22. The width of the opening edge 44 at the locking end 41 of the locking groove 40 is narrower than the width of the opening edge 44 at the insertion end 42.

When the bottom mold 15 is placed on the distributor plate 10, the support shaft 17 and the second support hole 37 are aligned, and the locking projection 20 and the insertion end 42 of the locking groove 40 are aligned so that the bottom mold 15 is aligned. Is placed on the distributor plate 10. As a result, the support shaft 17 fits into the second support hole 37, and the locking projection 20 rushes into the insertion end 42 of the locking groove 40. From this state, by rotating the bottom mold 15 with respect to the distributor plate 10 about the support shaft 17, the locking projection 20 moves from the insertion end 42 of the locking groove 40 to the locking end 41. In the present embodiment, the locking projection 20 moves from the insertion end 42 of the locking groove 40 to the locking end 41 by rotating the bottom mold 15 clockwise with respect to the distributor plate 10 when viewed from above. .. In another embodiment, the rotation direction and the angular width around the support shaft 17 from the insertion end 42 to the locking end 41 can be arbitrarily set. When the locking projection 20 is at the locking end 41 of the locking groove 40, the large diameter portion 26 of the shaft portion 21 passes through the slit 46, and the expanding head 22 is located above the locking wall 45. Therefore, by locking the expanding head 22 to the locking wall 45, it is prevented from coming out of the locking groove 40 of the locking projection 20. The position of the bottom mold 15 when the locking projection 20 is at the locking end 41 is referred to as a fixed position, and the position of the bottom mold 15 when the locking projection 20 is at the insertion end 42 is referred to as a detachable position.

As shown in FIG. 2, a columnar neck portion 51 projecting upward along the central axis A of the bottom mold 15 is provided at the center of the upper surface 34 of the bottom plate portion 33. A head 52 is coaxially provided at the upper end of the neck 51. The head portion 52 is formed in a disk shape centered on the central axis A, and its outer peripheral portion projects radially outward from the neck portion 51. A bottom mold surface 54 corresponding to the bottom 43 of the glass container to be molded is formed on the upper portion of the head 52. The bottom mold surface 54 has a mold surface outer peripheral portion 55 recessed downward and a mold surface central portion 56 projecting upward. The outer peripheral portion 55 of the mold surface and the central portion 56 of the mold surface are each formed on a curved surface and are smoothly connected to each other.

A chamber 57 is formed inside the neck portion 51 and the head portion 52. The chamber 57 may be connected to the second support hole 37. A plurality of second ventilation holes 58 extending from the lower surface 35 of the bottom plate 33 to the chamber 57 are formed in the neck 51 and the bottom plate 33. When the bottom mold 15 is in a fixed position with respect to the distributor plate 10, the opening end of each of the second ventilation holes 58 on the bottom plate portion 33 side is connected to the opening end of the corresponding first ventilation hole 31 on the upper surface side. Below the distributor plate 10, a ventilation port for supplying cooling air (compressed air) is provided at the lower end of the first ventilation hole 31. The cooling air passes through the first ventilation hole 31 and the second ventilation hole 58 and flows into the chamber 57 to cool the bottom mold. Further, some of the plurality of first ventilation holes 31 are opened toward the lower surface 35 of the bottom plate portion 33 to cool the lower surface 35 of the bottom plate portion 33.

A positioning pin 60 projecting upward is provided on the upper surface 34 of the bottom plate portion 33. The positioning pin 60 is formed in a columnar shape, and its lower end is inserted into a coupling hole 61 recessed in the upper surface 34 of the bottom plate portion 33.

A pair of finishing molds 64 are arranged above each bottom mold 15. The finishing mold 64 is made of a metal such as tool steel. The pair of finishing molds 64 has a mating surface extending vertically, and has a side mold surface 65 corresponding to the shape of the side portion of the glass container formed on the mating surface. The finish mold cavity 66 is formed by each side mold surface 65. The lower end surfaces 67 of the pair of finishing dies 64 are formed on a flat surface that can be slidably contacted with the upper surface 34 of the bottom plate portion 33. A first sandwiching portion 68 for sandwiching the neck portion 51 and the head portion 52 of the bottom mold 15 is formed on the lower end edge of the side mold surface 65 of each finishing mold 64. Further, a second sandwiching portion 69 for sandwiching the positioning pin 60 is formed at the lower end portion of the mating surface of the pair of finishing dies 64.

The pair of finishing dies 64 are supported by a support device (not shown) and move between a molding position where the mating surfaces are in contact with each other and a retracting position where the mating surfaces are separated from each other and separated from the bottom mold 15. It is possible. For example, the pair of finishing dies 64 may move between the molding position and the retracting position by a rotating operation about a predetermined axis extending vertically.

When the pair of finishing dies 64 are in the molding position, the neck portion 51 and the head portion 52 of the bottom mold 15 are sandwiched by the first sandwiching portion 68, and the positioning pin 60 is sandwiched by the second sandwiching portion 69. As a result, the relative positions of the pair of finishing molds 64 and the bottom mold 15 are determined. When each finishing die 64 is in the molding position, the bottom die 15 is placed in the fixed position. When each finishing mold 64 is in the molding position, the bottom mold surface 54 and the side mold surface 65 are smoothly connected to form a shape corresponding to the outer shape of the glass container to be molded.

As shown in FIGS. 4, 6 and 7, the two bottom molds 15 arranged on one distributor plate 10 have notched surfaces 71 on the outer peripheral portions of the bottom plate portions 33 facing each other. In FIGS. 6 and 7, each bottom mold 15 is shown by omitting the second ventilation hole 58. The cutout surface 71 is formed in a plane orthogonal to the radial line extending from the axis A of the bottom mold 15. The cutout surfaces 71 of the two bottom molds 15 are arranged parallel to each other through a gap when the bottom molds 15 are in the attachment / detachment position. Further, the cutout surfaces 71 of the two bottom molds 15 are arranged in parallel with each other through a gap when each bottom mold 15 is in a fixed position.

As shown in FIGS. 6 and 7, the two bottom molds 15 move from the attachment / detachment position to the fixed position by rotating at equal angles in the same direction. When the two bottom molds 15 are in the detachable position or the fixed position, the virtual surface 73 having the outer peripheral surface of one bottom plate portion 33 externally inserted in the cutout portion intersects the cutout surface 71 of the other bottom plate portion 33. Therefore, when the two bottom molds 15 are in the detachable position or the fixed position, if only one bottom mold 15 is rotated, it comes into contact with the other bottom mold 15 and cannot be rotated. Therefore, when rotating the two bottom molds 15 between the attachment / detachment position and the fixed position, it is necessary to rotate the two bottom molds 15 at the same time so that the cutout surfaces 71 are parallel to each other.

When the two bottom molds 15 are arranged on the distributor plate 10, in each bottom mold 15, the support shaft 17 and the second support hole 37 are aligned, and the locking projection 20 and the insertion end 42 of the locking groove 40 are aligned. Place the bottom mold 15 on the distributor plate 10. As a result, each bottom mold 15 is arranged at the attachment / detachment position. Next, each bottom mold 15 is rotated in the same direction at the same time, and each is arranged at a fixed position. At the fixed position, each locking projection 20 is locked to the corresponding locking wall 45, so that each bottom plate 33 cannot move up and down with respect to the distributor plate 10. When each bottom mold 15 is in a fixed position, even if one bottom mold 15 receives an unexpected load and rotates, it hits the other bottom mold 15 and cannot move to the insertion position. Therefore, it is possible to prevent the bottom mold 15 from unexpectedly rotating and becoming detachable from the distributor plate 10. When removing the two bottom molds 15 from the distributor plate 10, each bottom mold 15 is rotated in the same direction at the same time, and each of the bottom molds 15 is arranged at the attachment / detachment position. In this state, since each locking projection 20 is separated from the corresponding locking wall 45, each bottom mold 15 can be removed upward from the distributor plate 10.

In the process of molding the glass container from the parison, first, the parison supported by the mouth mold 4 is suspended by the mouth mold 4 above the bottom mold 15 by moving the reversing arm 3 to the reversing position. Become. At this time, the bottom mold 15 is arranged at a fixed position, and the finishing mold 64 is arranged at a retracted position. Next, the finishing die 64 moves to the molding position and is placed above the bottom die 15. At this time, the bottom mold 15 is maintained at a fixed position by sandwiching the neck portion 51 and the head portion 52 of the bottom mold 15 by the first sandwiching portion 68 and the positioning pin 60 by the second sandwiching portion 69. .. Therefore, even if the bottom mold 15 is slightly deviated from the fixed position to the attachment / detachment position side, the bottom mold 15 is corrected to the fixed position by being sandwiched between the pair of finishing dies 64.

By arranging each finishing die 64 at the molding position, the parison is arranged in the finishing die cavity 66 between the finishing dies 64, and the mouth die 4 is arranged in the upper end opening of the finishing die cavity 66. In this state, compressed air is blown into the inside of the parison through the mouth of the parison, and the parison expands downward and laterally. The parison is pressed against the bottom mold surface 54 of the bottom mold 15 and the side mold surface 65 of the finishing mold 64 to form a glass container.

Next, the mouth mold 4 separates the mouth of the molded glass container, and the reversing arm 3 moves to the initial position. At the same time, each finishing die 64 moves to the retracted position. As a result, the glass container is in a state of being supported by the bottom mold 15 at the bottom 43. From this state, a clamp device (not shown) sandwiches the mouth of the molded glass container, lifts the glass container upward, and separates the bottom 43 of the glass container from the bottom mold 15. At this time, since the movement of the bottom mold 15 with respect to the distributor plate 10 is restricted by the engagement between the locking protrusion 20 and the locking wall 45, the bottom mold 15 adheres to the glass container and is lifted together with the glass container. Is prevented. The glass container removed from the bottom mold 15 by the clamping device is sent to the subsequent slow cooling step.

The effect of the molding apparatus 1 configured as described above will be described. When the bottom mold 15 is in the fixed position, the locking projection 20 is locked to the locking wall 45, which restricts the upward movement of the bottom mold 15 with respect to the distributor plate 10. This makes it possible to prevent the bottom mold 15 from separating from the distributor plate 10 even if the bottom mold 15 is pulled by the glass container when the molded glass container is separated from the bottom mold 15. By rotating the bottom mold 15 horizontally with respect to the distributor plate 10, the coupling state of the locking projection 20 and the locking wall 45 can be switched between coupling and separation. Therefore, it is possible to easily replace the bottom mold 15 according to the production type.

The bottom mold 15 is rotatable about the support shaft 17 with respect to the distributor plate 10. Therefore, even when the bottom mold 15 and the finishing mold 64 expand due to heat, the bottom mold 15 can absorb the displacement due to the expansion by rotating with respect to the distributor plate 10, and the bottom mold 15 and the finishing mold 64 can be absorbed. Can be properly combined.

Although the description of the specific embodiment is completed above, the present invention can be widely modified without being limited to the above embodiment. For example, a locking groove 40 provided with a locking wall 45 may be provided on the upper surface 11 of the distributor plate 10, and a locking projection 20 may be provided on the lower surface 35 of the bottom plate portion 33 of the bottom mold 15.

The coupling structure of the locking projection 20 to the distributor plate 10 can be changed to various alternative structures. For example, the locking projection 20 may be coupled to the distributor plate 10 by welding or press fitting.

The shape of the bottom mold surface 54 of the bottom mold 15, that is, the height of the mold surface central portion 56 (upward protrusion amount) and the depth of the mold surface outer peripheral portion 55 (downward dent amount) can be arbitrarily set. Can be done. For example, the central portion 56 of the mold surface may be made lower and the outer peripheral portion 55 of the mold surface may be made shallower than the bottom mold surface 54 shown in FIG.

In the above embodiment, an example in which two bottom molds 15 are arranged on one distributor plate 10 has been described, but in other embodiments, as shown in FIG. 8, three or more bottom molds are arranged on one distributor plate 10. 15 may be arranged. In this case, each bottom mold 15 may have two notched surfaces 71. The two notched surfaces 71 may be provided at portions of each bottom mold 15 facing adjacent bottom molds. By arranging the two cutout surfaces 71 at symmetrical positions in each bottom mold 15, three or more bottom molds 15 can be linearly arranged on one distributor plate 10 as shown in FIG. The adjacent bottom molds 15 face each other in their respective notch surfaces 71, and their independent rotations are regulated. Similar to the above embodiment, each bottom mold 15 can be rotated by rotating all of the bottom molds 15 at the same time and in the same direction.

1: Molding device 10: Distributor plate 15: Bottom mold 17: Support shaft 20: Locking protrusion 21: Shaft part 28: Male screw 29: Female screw hole 33: Bottom plate part 40: Locking groove 41: Locking end 42: Insertion end 43: Bottom 44: Opening edge 45: Locking wall 51: Neck 52: Head 54: Bottom mold surface 60: Positioning pin 64: Molding mold 65: Side mold surface 68: First pinching portion 69: Second pinching portion 71: Notched surface 73: Virtual surface A: Central axis

Claims (5)

A glass container molding device for molding glass containers from parisons.
The plate provided on the base and
A bottom mold that is placed on the plate and forms the bottom of the glass container,
It has a pair of finishing molds that are placed on top of the bottom mold and form the sides of the glass container.
A shaft portion protruding from the upper surface of the plate or the lower surface of the bottom mold, and a locking projection provided at the tip of the shaft portion and having a wider head than the shaft portion.
It has a locking groove extending on the upper surface of the plate facing the locking projection or the lower surface of the bottom mold and capable of receiving the locking projection.
A locking wall is provided on the opening edge at one end of the locking groove so as to project in the width direction of the locking groove and regulate the withdrawal of the expanded head .
The plate and the bottom mold are rotatably connected via a support shaft and
The locking groove extends in the circumferential direction around the support shaft.
Two bottom molds are provided on the plate so as to be adjacent to each other.
Each of the bottom molds has a notch surface formed in a plane orthogonal to the radial direction at a portion of the outer peripheral portion facing each other.
Each of the bottom molds is a glass container molding apparatus, characterized in that a virtual surface obtained by extrapolating one outer peripheral surface of the bottom mold is arranged so as to intersect the cutout surface of the other bottom mold. A glass container molding device for molding glass containers from parisons.
The plate provided on the base and
A bottom mold that is placed on the plate and forms the bottom of the glass container,
It has a pair of finishing molds that are placed on top of the bottom mold and form the sides of the glass container.
A shaft portion protruding from the upper surface of the plate or the lower surface of the bottom mold, and a locking projection provided at the tip of the shaft portion and having a wider head than the shaft portion.
It has a locking groove extending on the upper surface of the plate facing the locking projection or the lower surface of the bottom mold and capable of receiving the locking projection.
A locking wall is provided on the opening edge at one end of the locking groove so as to project in the width direction of the locking groove and regulate the withdrawal of the expanded head.
The plate and the bottom mold are rotatably connected to each other via a support shaft provided at the center of the bottom mold.
The locking groove extends in the circumferential direction around the support shaft.
A bottom mold surface corresponding to the bottom of the glass container is formed on the upper portion of the bottom mold.
The bottom mold surface has a mold surface outer peripheral portion that is recessed downward and a mold surface central portion that protrudes upward.
A glass container molding apparatus, wherein the locking projection and the locking groove are arranged below the outer peripheral portion of the mold surface. Claim 1 or claim 2 is characterized in that a male screw is formed at the base end of the shaft portion, and a female screw hole into which the male screw is screwed is formed on the upper surface of the plate or the lower surface of the bottom mold. The glass container molding apparatus according to. The bottom mold has a bottom plate portion forming a lower surface, a neck portion extending upward from the upper surface of the bottom plate portion, and a head portion provided on the upper portion of the neck portion and having a mold surface on the upper surface.
The glass according to any one of claims 1 to 3 , wherein the pair of finishing dies have a first holding portion that holds the neck portion and the outer peripheral portion of the head portion on their mating surfaces. Container molding equipment. The bottom mold has a positioning portion projecting from the upper surface of the bottom plate portion.
The glass container molding apparatus according to claim 4 , wherein the pair of finishing dies have a second sandwiching portion for sandwiching the positioning portion on their mating surfaces.

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