JP3273270B2 - Molding device for compression molding of synthetic resin outer lid of composite lid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a metal inner lid having a top wall and a skirt wall hanging down from the periphery of the top wall and having an opening formed in the center of the top wall as required. More particularly, the present invention relates to a molding apparatus for compression-molding a synthetic resin outer lid for closing the opening, and thus forming a composite lid including a metal inner lid and a synthetic resin outer lid.

[0002]

2. Description of the Related Art As a lid for a container containing a medicinal solution for injection or infusion, a composite lid composed of a metal inner lid and a synthetic resin outer lid has been widely put into practical use. The metal inner lid has a top wall and a skirt wall hanging down from the periphery of the top wall, and an opening is formed at the center of the top wall. The synthetic resin outer lid is disposed on the outer surface of the metal inner lid and closes the opening formed on the top wall of the metal inner lid. An inner stopper, which may be made of rubber, is attached to the mouth and neck of the container containing the drug solution, and then the above-mentioned composite lid is attached. The mounting of the composite lid is performed by fitting the metal lid to the mouth and neck, deforming the free end of the skirt wall of the metal inner lid inward in the radial direction, and locking it to the locking jaw of the mouth and neck. When using a chemical solution, remove the synthetic resin outer lid to expose the opening formed in the top wall of the metal inner lid, and insert the injection needle or drip instrument into the inner stopper through the opening. .

[0003] Japanese Patent Application Laid-Open No. 1-317747 discloses a method of manufacturing a composite lid of the above-described type in which a metal inner lid already formed in a required shape is positioned in a molding die means. It is disclosed that a synthetic resin outer lid is compression molded in association with a metal inner lid as required. The molding die means includes a lower mold part and an upper mold part which can be moved up and down relatively to the lower mold part. The metal container lid is supplied on the lower mold part in an upright position, i.e. with the outer surface of the top wall upward and the free end of the skirt wall facing down, and the top wall of such a metal container lid A synthetic resin material in a molten state is supplied onto the outer surface of the substrate. Adhesive paint is applied to the outer surface of the metal inner lid, and after compression molding of the synthetic resin outer lid, the metal inner lid is further subjected to high-frequency induction heating as required, so that the outer surface of the metal inner lid is The synthetic resin outer lid is releasably bonded.

[0004]

In the above-mentioned production mode, it is necessary to transport the metal inner lid with the free end of the skirt wall thereof facing downward. The free end of the skirt wall of the metal inner lid is generally defined by a cutting edge of a sheet metal, and the cutting edge is brought into contact with a required guide plane to smoothly transport the metal inner lid at high speed. It is extremely difficult to do. Therefore, the synthetic resin outer lid cannot be molded at a sufficiently high speed in the above-mentioned production mode.

[0005] On the other hand, the metal inner lid is conveyed in an inverted state, that is, with the free end of the skirt wall directed upward while the outer surface of the top wall is directed downward, and supplied to the lower mold portion. For example, it is allowed to transport the metal container lid in a state where the outer surface of the top wall is brought into contact with the required guide plane, so that the above-described problem relating to the transport of the metal inner lid can be avoided. However, when the metal container lid is supplied on the lower mold part in an inverted state, the following separate problems to be solved arise.

First, at least a large part of the synthetic resin outer lid needs to extend along the outer surface of the top wall of the metal inner lid. It is necessary to allow the resin material to flow between the lower mold part and the outer surface of the top wall of the metal inner lid positioned thereon, but usually, the outer surface of the top wall of the metal inner lid is The plastic material cannot be flowed as required because it is pressed against the upper surface of the lower mold part by gravity and also by the force applied from the plastic material being flowed.

Second, the synthetic resin outer lid not only extends along the outer surface of the top wall of the metal inner lid, but also extends on the upper outer peripheral surface of the skirt wall of the metal inner lid. Generally desirable, in this case, the synthetic resin material is caused to flow along the outer peripheral surface of the skirt wall from below the top wall of the metal inner lid which is positioned on the lower mold portion in an inverted state during compression molding. It is necessary. Therefore, it is necessary to define a synthetic resin flow space on the outer peripheral surface of the skirt wall and to position the upper mold portion above this space.
Therefore, the position of the metal inner lid cannot be restricted on the lower mold part by the stationary restraint member or the like that at least partially surrounds the outer peripheral surface of the skirt wall of the metal inner lid, There is a problem related to the regulation of the position of the metal inner lid in the above.

[0008] The present invention has been made in view of the above facts, and a first technical problem thereof is that a metal inner lid is supplied in an inverted state on a lower mold portion of a molding die means (accordingly, metal). (The above problem does not exist when the inner lid is transported in an upright state.) However, during compression molding, the lower mold part and the top wall of the metal inner lid positioned thereon are An object of the present invention is to provide a new and improved molding apparatus that allows a synthetic resin material to flow sufficiently well between itself and an outer surface and can mold a synthetic resin outer lid in a desired form.

A second technical problem of the present invention is that it is possible to regulate the position of a metal inner lid, which is positioned in an inverted state on a lower mold portion of a molding die means, as required and sufficiently precisely. An object of the present invention is to provide a new and improved molding apparatus capable of causing a synthetic resin material to flow as required along the outer peripheral surface of a skirt wall of a metal inner lid on a side mold portion.

[0010]

In order to solve the above-mentioned first technical problem, the present invention provides a method in which a metal mold supplied to an upper surface of a lower mold portion of a molding die means in an inverted state. A concave portion larger than the opening formed in the top wall of the lid and smaller than the top wall is formed. During compression molding, the synthetic resin material flows through the concave portion, and the lower mold portion and the metal are removed from the synthetic resin material. The lower mold portion and the metal inner lid are forcibly separated in the vertical direction by the pressure transmitted to the outer surface of the top wall of the inner lid.

That is, according to the present invention, as a forming device for solving the first technical problem, there is provided a top wall and a skirt wall hanging down from a peripheral edge of the top wall, and a central portion of the top wall is provided at a central portion of the top wall. In connection with the metal inner lid where the opening is formed,
A molding device for compression-molding a synthetic resin outer lid for closing the opening to form a composite lid composed of a metal inner lid and a synthetic resin outer lid includes a lower mold portion and the lower mold portion. A mold means including an upper mold part which is moved up and down relatively to the inner lid supply area, a synthetic resin material supply area, a compression molding area and a composite lid discharge area; and An inner lid supply means for supplying a metal inner lid to the molding die means; a synthetic resin material supply means for supplying a molten synthetic resin material to the molding die means in the synthetic resin material supply area; A composite lid discharging means for discharging the composite lid from the molding die means in a lid discharging area, and the synthetic resin material is cooperated with the lower mold part and the upper die part in the compression molding area. In a molding device for compression molding on a synthetic resin outer lid, The lid was supplied on the lower mold portion of the molding die means in an inverted state with the outer surface of the top wall facing downward, and the upper surface of the lower mold portion was supplied on the lower mold portion. A recess larger than the opening formed in the top wall of the metal inner lid and smaller than the top wall is formed, and during compression molding, the synthetic resin material flows through the recess, and A molding device, wherein the lower mold portion and the metal inner lid are forcibly separated in the vertical direction by pressure transmitted to the outer surface of the top wall of the lower mold portion and the metal inner lid, Provided.

Further, in order to solve the first technical problem, in the present invention, the top of the metal inner lid supplied in an inverted state on the lower mold portion is provided on the upper mold portion of the mold means. A suction means is formed on the lower surface radially inside the face wall and radially outside the opening formed on the top wall, and the suction means of the upper mold part is connected to a vacuum source during compression molding. The metal inner lid is attracted to the upper mold part by the communication, and the metal inner lid is separated upward from the lower mold part.

That is, according to the present invention, as a forming apparatus for solving the first technical problem, there is provided a top wall and a skirt wall hanging down from the periphery of the top wall, and a central portion of the top wall is provided at the center of the top wall. In connection with the metal inner lid where the opening is formed,
A molding device for compression-molding a synthetic resin outer lid for closing the opening to form a composite lid composed of a metal inner lid and a synthetic resin outer lid includes a lower mold portion and the lower mold portion. A mold means including an upper mold part which is moved up and down relatively to the inner lid supply area, a synthetic resin material supply area, a compression molding area and a composite lid discharge area; and An inner lid supply means for supplying a metal inner lid to the molding die means; a synthetic resin material supply means for supplying a molten synthetic resin material to the molding die means in the synthetic resin material supply area; A composite lid discharging means for discharging the composite lid from the molding die means in a lid discharging area, and the synthetic resin material is cooperated with the lower mold part and the upper die part in the compression molding area. In a molding device for compression molding on a synthetic resin outer lid, The lid is supplied on the lower mold part of the molding die means in an inverted state with the outer surface of the top wall facing downward, and the metal inner lid supplied on the lower mold part is provided on the upper mold part. Suction means is formed on the lower surface radially inward of the top wall and radially outside of the opening formed in the top wall of the upper mold part. A means is provided for communicating with a vacuum source, wherein the metal inner lid is adsorbed to the upper mold part, and the metal inner lid is separated upward from the lower mold part. .

Further, in order to solve the second technical problem, in the present invention, the lower mold portion of the molding die means is provided with an approximately skirt wall of a metal inner lid supplied in an inverted state to the lower mold portion. A restraining mechanism including a pair of opening and closing members that can be opened and closed between a closed position surrounding a half circumference and an open position separated from the skirt wall of the metal inner lid is additionally provided.

That is, according to the present invention, as a forming device for solving the second technical problem, there is provided a top wall and a skirt wall hanging down from a periphery of the top wall, and a central portion of the top wall is provided at a center portion of the top wall. In connection with the metal inner lid where the opening is formed,
A molding device for compression-molding a synthetic resin outer lid for closing the opening to form a composite lid composed of a metal inner lid and a synthetic resin outer lid includes a lower mold portion and the lower mold portion. A mold means including an upper mold part which is moved up and down relatively to the inner lid supply area, a synthetic resin material supply area, a compression molding area and a composite lid discharge area; and An inner lid supply means for supplying a metal inner lid to the molding die means; a synthetic resin material supply means for supplying a molten synthetic resin material to the molding die means in the synthetic resin material supply area; A composite lid discharging means for discharging the composite lid from the molding die means in a lid discharging area, and the synthetic resin material is cooperated with the lower mold part and the upper die part in the compression molding area. In a molding device for compression molding on a synthetic resin outer lid, The lid is supplied on the lower mold part of the mold means in an inverted state with the outer surface of the top wall facing downward, and the lower mold part has a skirt wall of a metal inner lid supplied thereto. A molding device is provided, which has a restraining mechanism including a pair of opening and closing members that can be opened and closed between a closed position surrounding substantially half a circumference and an open position separated from the skirt wall of the metal inner lid. Provided.

[0016]

In the molding apparatus according to the present invention provided for the first technical problem, the lower mold portion is provided even though the metal inner lid is supplied on the lower mold portion in an inverted state. By the pressure transmitted from the synthetic resin material flowing into the recess formed in the lower mold portion and the outer surface of the top wall of the metal inner lid,
Alternatively, the suction means formed on the upper mold portion is connected to a vacuum source to adsorb the metal inner lid to the upper mold portion, so that the lower mold portion and the metal inner lid move up and down during compression molding. Separated in the direction. Therefore, the synthetic resin material can be sufficiently satisfactorily flown on the outer surface of the top wall of the metal inner cover, and a synthetic resin outer cover having a required form can be formed.

Further, in the molding apparatus of the present invention provided for the second technical problem, the pair of opening / closing members of the restraining mechanism are set to the closed position, and the substantially semicircular region defined by the opening / closing members is provided. By supplying the metal inner lid to the lower mold part, the position of the metal inner lid can be regulated with sufficient precision, and the pair of opening and closing members of the restraining mechanism are set to the open position during compression molding. As a result, the synthetic resin material can be separated from the skirt wall of the metal inner lid, and the synthetic resin material can flow as required along the outer peripheral surface of the skirt wall without being hindered by the opening / closing member.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a molding apparatus constructed according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 schematically shows a preferred embodiment of a molding apparatus constructed in accordance with the present invention. This molding apparatus includes a rotary compression molding mechanism 2. FIG.
With reference to FIG. 2, a hollow box-shaped support base 4 having a plurality of support legs is provided, and the compression molding mechanism 2 includes an upright support 6 fixed on the support base 4. Contains. A rotating body 12 is rotatably mounted on the support 6 via an upper bearing 8 and a lower bearing 10. The rotating body 12 has an inner cylindrical portion 14, an outer cylindrical portion 16, and an annular connecting portion 18 connecting these. Above and below the annular connecting portion 18, a plurality of radially extending reinforcing walls 19 are provided between the inner cylindrical portion 14 and the outer cylindrical portion 16 at circumferential intervals. . A large-diameter gear 20 is fixed to a lower end of the outer cylindrical portion 16 of the rotating body 12. The gear 20 is connected to a rotary drive source (not shown), which may be an electric motor, via a suitable transmission means (not shown). At 1 it is continuously rotated counterclockwise.

Continuing the description with reference to FIGS. 1 and 2,
The outer cylindrical portion 16 of the rotating body 12 is provided with 36 molding means 22 at equal intervals in the circumferential direction. Referring to FIG. 3 together with FIG. 1 and FIG.
Are composed of a lower mold part 24 and an upper mold part 26. An annular projecting portion 28 protruding radially outward is formed below the outer cylindrical portion 16 of the rotating body 12, and the lower mold portion 24 is mounted on the projecting portion 28. As clearly shown in FIG. 3, the lower mold section 24 includes a stationary outer member 30 and a movable inner member 32. The outer member 30 is fixed on the overhang 28 by a suitable fastening means (not shown) such as a fastening screw. The outer member 30 has a through hole 34 extending in the vertical direction. The cross-sectional shape of the through hole 34 is circular, the inner diameter of the lower part thereof is slightly larger than the inner diameter of the upper part thereof, and the inner peripheral surface of the through hole 34 has a downwardly facing annular shoulder surface 3.
6 are specified. The inner member 32 includes an upper piece 38 and a lower piece 40 fixed to the upper piece 38. The upper piece 38 has a circular upper wall and a cylindrical hanging wall hanging from the periphery of the upper wall. The lower end of the cylindrical hanging wall is slightly displaced radially outward, and the inner diameter and outer diameter of the lower end are somewhat larger than the inner diameter and outer shape of the upper part, and An annular shoulder surface 42 facing upward is formed on the outer peripheral surface. The lower piece 40 has a relatively large-diameter cylindrical upper end portion and a relatively small-diameter hanging cylindrical portion hanging downward from the lower surface thereof. The cylindrical upper end of the lower piece 40 is inserted into the lower end of the depending wall of the upper piece 38 and is secured thereto in any suitable manner, such as by welding. In each of the mounting portions of the lower mold portion 24, the rotating body 1
2 is provided with the through hole 34 of the outer member 30.
A through-opening 44 extending in the vertical direction in conformity with is formed. A cylindrical member 46 is fixed in the opening 44 by an appropriate means (not shown) such as a fastening screw. The hanging column portion of the lower piece 40 of the inner member 32 is slidably inserted into the central through hole of the cylindrical member 46. Upper end surface of cylindrical member 46 and inner member 32
A plurality of disc springs 48 constituting elastic biasing means are interposed between the lower piece 40 and the annular lower surface of the columnar upper end. Such a disc spring 48 elastically biases the inner member 32 upward. When the shoulder surface 42 of the inner member 32 abuts the shoulder surface 36 of the outer member 30, the inner member 3
2 is limited. Continuing with FIG. 3, the lower piece 40 of the inner member 32 of the lower mold part 24 is fixed with a tube member 50 projecting into the upper piece 38, and in connection therewith, the lower piece 40 Has an inflow pipe 5
A flow path 54 extending from the inflow port to which the pipe 2 is connected to the pipe member 50 is formed. An outflow hole 56 is formed in a hanging wall of the upper piece 38 of the inner member 32, and an outflow pipe 57 is connected to the outflow hole 56. Cooling water flows from the inflow pipe 52 through the flow path 54 and the pipe member 50, flows out through the outflow hole 56 and the outflow pipe 57, and thus cools the lower mold section 24.

It is important that a recess 58 is formed at the center of the upper surface of the movable inner member 30 in the lower mold portion 24, that is, at the center of the upper surface of the circular upper wall of the upper piece 38. . Conveniently, the recess 58 has a circular cross section. As will be further mentioned below, the diameter of the recess 58 is smaller than the outer shape of the top wall of the metal inner lid which is mounted on the movable inner member 30 in an inverted state, however, it is formed at the center of the top wall of the metal inner lid. The opening is set to be larger than the diameter of the opening.

Referring to FIGS. 4 and 5 together with FIG. 3, the stationary outer member 30 in the lower mold portion 24 will be described.
A guide groove 60 extending in a chordal shape is formed on the upper surface of the radially inner portion. A pair of opening and closing members 62a and 62b are slidably mounted in the guide groove 60.
A pair of opening / closing members 62a and 62 constituting the restraining mechanism 64
b has legs 66a and 66b projecting downward, and these legs 66a and 66b are slidably combined with the guide groove 60. A pair of opening / closing members 62a and 62b
Extend above the outer member 30, and arcuate notches 68a and 68b
Are formed. Guide pins 70a and 70b projecting inward are attached to the pair of opening and closing members 62a and 62b. An opening / closing operation member 72 is mounted on the inside of the outer member 30 in the radial direction so as to be able to move up and down. A pair of cam grooves 74a and 74b in a form as clearly shown in FIG. 5 are formed on the outer surface of the opening / closing operation member 72, and the guided pin 70a is formed in the cam grooves 74a and 74b.
And 70b are inserted. Opening / closing member 72
Is in the raised position shown by the solid line,
The pair of opening / closing members 62a and 62b are located at a closed position indicated by a solid line in FIG. A pair of opening and closing members 62a and 6
2b is positioned in the closed position, the arc-shaped notch 68
Reference numerals a and 68b denote a substantially semicircular inner lid housing space having an inner diameter corresponding to the outer diameter of a metal inner lid described later and having an open radially outer side. When the opening / closing operation member 72 is lowered, the pair of opening / closing members 62a and 62b are moved in a direction away from each other by the action of the cam grooves 74a and 74b, and are positioned at the open position shown by the two-dot chain line in FIG. Can be The mounting style of the opening and closing operation member 72 itself and the elevating movement will be described later.

Referring to FIG. 2 and FIG. 3, each upper mold portion 26 of the mold means 22 comprises an outer member 76 and an inner member 78. The outer member 76 includes a main piece 80 and an additional piece 82. Main piece 8
0 has a through hole 84 extending in the vertical direction.
The cross-sectional shape of the through hole 84 is conveniently circular.
A vertically intermediate portion of the main piece 80 extends radially outward from the through hole 84 and extends on both sides in the circumferential direction, thereby opening the intermediate portion of the through hole 84 radially outward. Relatively large transmission notch 86 open to both sides in the circumferential direction
Are formed. Further, the main piece 80 is located just below the transparent notch 86 in the direction of rotation of the rotating body 12 which is rotated counterclockwise in FIG. An introduction notch 88 extending from the front side of 80 to the through hole 84 is also formed.
The introduction notch 88 does not exist rearward from the through-hole 84, and therefore, below the perforation notch 86,
Is not opened rearward in the circumferential direction, but is opened by the introduction notch 88 only forward in the circumferential direction. The outer member 76 is fixed to a lower end portion of the interlocking member 90 by a suitable fastening means (not shown) such as a fastening screw. The interlocking member 90 is mounted so as to be able to move up and down in the vertical direction, and is moved up and down in accordance with the rotation of the rotating body 2 and therefore the movement of the molding die means 22, whereby the outer member 76 is moved up and down as required. . The elevation movement of the interlocking member 90 will be further described later. The main piece 80 has a cylindrical hanging portion at its lower end, and the additional piece 82 fixed to the main piece 80 by an appropriate fastening means (not shown) such as a fastening screw has a substantially cylindrical shape. The main piece 80 surrounds the cylindrical hanging part. As clearly shown in FIG. 3, between the main piece 80 and the additional piece 82, a thin annular space 92 for accommodating the skirt wall of the metal inner lid is defined.
Further, an annular concave portion 94 following the inner peripheral surface is formed on the lower surface of the main piece 80.
Is formed on the lower surface of the additional piece 82, and an annular concave portion 96 is formed following the inner peripheral surface thereof.

Referring to FIG. 3, the inner member 78 of the upper mold part 26 has a substantially columnar shape elongated in the vertical direction, and the lower half thereof has a through hole 8 of the outer member 76.
The outer member 76 has an outer diameter corresponding to the inner diameter, and is inserted into the through hole 84 of the outer member 76 so as to be relatively movable up and down. An annular projecting flange portion 98 is formed at an upper portion of the inner member 78 projecting upward beyond the outer member 76. An interlocking member 100 is disposed adjacent to the interlocking member 90 disposed in relation to the outer member 76 and radially inward of the interlocking member 90 so as to be able to move up and down.
At the lower end of 00, a connecting portion 102 protruding outward in the radial direction is formed. A through-opening 104 extending in the vertical direction is formed in the connecting portion 102, and the upper end of the inner member 78 extends upward through the through-opening 104. A plurality of disc springs 106 are interposed between the flange portion 98 of the inner member 78 and the connecting portion 102 of the interlocking member 100. Such a disc spring 106 elastically biases the inner member 78 downward. A large diameter head 108 is connected to the upper end of the inner member 78,
When the head 108 comes into contact with the upper surface of the connecting portion 102 of the interlocking member 100, the downward movement of the inner member 78 is restricted. A blind hole 110 extending from the upper end to the vicinity of the lower end of the inner member 78 is formed, and a pipe 112 extending in the blind hole 110 is provided. The upper end of the pipe 112 is protruded into the head 108 and communicates with a flow path 114 formed in the head 108. On the other hand, a flow passage 116 extending from the outer peripheral surface to the blind hole 110 is formed in the flange portion 98. Cooling water is introduced into the pipe 112 through the flow path 114, and the cooling water flows from the blind hole 110 to the flow path 116.
Through which the inner member 78 is cooled. The interlocking member 100 is moved up and down in response to the rotation of the rotating body 2 and thus the movement of the mold means 22, whereby the inner member 78 is moved up and down as required. The elevating movement of the interlocking member 100 will be described in detail below.

Referring to FIG. 2 together with FIG. 3, a cam block 118 is fixed to the upper end of the upright support 6. On the outer peripheral surface of the cam block 118, three annular cam grooves 120, 122 and 124 are formed.
Also associated with the cam groove 124 is an annular cam surface 126 located above and facing downward.
On the other hand, a cam roller 128 is rotatably mounted on an upper end portion of the opening / closing operation member 72 provided in relation to the restraining mechanism 64 in the lower mold portion 24. Housed within. A cam roller 130 is also rotatably mounted on the upper end of the interlocking member 100 disposed in relation to the inner member 78 of the upper mold part 26, and the cam roller 130 is housed in the annular cam groove 122. I have. Upper mold member 2
The cam rollers 132 and 134 are rotatably mounted on the upper end of the interlocking member 90 disposed in relation to the outer member 76 of the annular cam groove 12.
4 and the cam roller 134 is mounted on the annular cam surface 1.
26. A groove (not shown) extending in the vertical direction is formed in the upper half of the outer cylindrical portion 16 of the rotating body 12 rotatably mounted on the column 6 so as to correspond to each of the mold means 22. The opening / closing member 72, the interlocking member 100, and the interlocking member 90 extend through the groove. Accordingly, the opening / closing operation member 72, the interlocking member 100, and the interlocking member 90 are also rotated with the rotation of the rotating body 12, and at this time, the opening / closing operation member 72 is moved up and down by cooperation of the cam groove 120 and the cam roller 128. Thereby, the pair of opening / closing members 62a and 62b of the restraining mechanism 64 are opened and closed as required, and the interlocking member 100 is moved up and down by the cooperation of the cam groove 122 and the cam roller 130, whereby the upper mold part 2 is moved.
6, the inner member 78 is moved up and down as required, and the cam groove 124 and the cam surface 126 and the cam roller 1 are also moved.
The interlocking member 90 is moved up and down by cooperation with the outer members 76 and 32 of the upper mold portion 26.
Is moved up and down as required.

Referring to FIG. 1, the rotating body 12 of the rotary compression molding mechanism 2 is rotated at a constant speed in a counterclockwise direction in FIG. 136, synthetic resin material supply area 138,
It is moved sequentially through the compression molding area 140 and the composite lid discharge area 142. An inner lid supply means generally designated by reference numeral 144 is provided in connection with the inner lid supply means 136, and a synthetic resin material supply means generally designated by reference numeral 146 is provided in association with the synthetic resin material supply area 138. Composite lid discharge area 142
A composite lid discharging means, generally designated by the numeral 150, is provided in connection with the above.

Continuing with FIG. 1, the inner lid supply means 144 includes a carry-in chute 152 and a rotating turret mechanism 154. Referring to FIG. 2 together with FIG. 1, an upright support 156 is also fixed on the support base 4, and a rotating body 160 is rotatably mounted on the support 156 via a bearing 158. An input gear 162 is fixed to a lower end of the rotating body 160. The input gear 162 is connected to the gear 20 in the rotary compression molding mechanism 2.
Therefore, when a rotary drive source (not shown) is urged to rotate the rotary body 12 counterclockwise in FIG. 1, the rotary turret mechanism 154 is engaged.
Is rotated clockwise in FIG. A turret plate 164 is fixed to the upper end of the rotating body 160, and sixteen semicircular receiving openings 166 are provided at the peripheral edge of the turret plate 164 at circumferential intervals.
Are formed. The metal inner lid 168 conveyed through the loading chute 152 is received in the receiving opening 170 in the receiving opening 166 formed in the turret plate 164 of the rotating turret mechanism 154, and the inner lid 168 is attached to the rotation of the turret plate 164. Then, it is moved to the inner lid supply area 136, and is supplied to the mold 22 of the rotary compression molding mechanism 2 in the inner lid supply area 136. In the region from the receiving area 170 to the inner lid supply area 136, the stationary guide plate 1 extending below the turret plate 164
72 are also provided, and also stationary guide rails 174 are provided which extend outside the turret guide plate 164. The turret plate 16 from the loading chute 152
The inner lid 168 carried into the accommodation opening 166 of No. 4 is positioned and transported on the stationary guide plate 172, and is prevented from moving outward in the radial direction by the stationary guide rail 174. As shown in FIG. 1, the inner lid supply means 144 is also provided with a high-frequency induction heating means 178. The heating means 178 includes a high-frequency induction coil 180 disposed in the stationary guide plate 174 in a region from the receiving area 170 to the inner lid supply area 136. When transported to the area 136, the inner lid 16
8 is heated to the required temperature.

Referring to FIG. 6, the inner lid 168, which can be formed from an appropriate metal sheet such as an aluminum-based alloy sheet, has a circular top wall 182 and this top wall 1
82 has a cylindrical skirt wall 184 that hangs down from the periphery of the top wall 182, and a relatively large-diameter circular opening 1 is formed in the center of the top wall 182.
86 are formed. As clearly shown in FIG.
68 is supplied onto the lower mold part 24 of the mold means 22 in an inverted state, that is, with the outer surface of the top wall 182 facing downward and the free end of the skirt wall 184 facing upward. As will be further described later, in the inner lid supply area 136, the pair of opening / closing members 62a and 62b of the restraining mechanism 64 disposed on the lower mold portion 24 are located at the closed position, and the pair of opening / closing members Arc-shaped notches 68 of 62a and 62b
The inner lid 168 is accommodated in a semicircular inner lid accommodation space defined by a and 68b (FIG. 4). As shown in FIG. 1, in a region from the inner lid supply region 136 to the synthetic resin material supply region 138, a stationary guide rail 188 extending outside the lower mold portion 24 along the moving path of the lower mold portion 24 is provided. The guide rail 188 prevents the inner lid 168 carried into the lower mold part 24 from moving outward in the radial direction.

The synthetic resin material supply means 146 disposed in relation to the synthetic resin material supply area 138 includes a synthetic resin material discharge nozzle 190. Discharge nozzle 19
0 indicates a synthetic resin supply area 13 as clearly shown in FIG.
In FIG. 8, the upper mold part 26 of the molding die means 22 has a front end protruding from a portion through which the transparent cutout 86 formed in the outer member 76 passes. Discharge nozzle 1
90 is provided on the lower surface of the distal end portion of the synthetic resin material outlet 192.
Are formed, and a synthetic resin material flow path 194 reaching the discharge port 192 is formed in the discharge nozzle 190. Channel 19
The upstream end of 4 is connected via a flexible hose 196 to an extruder 198, which may itself be of a known configuration. A suitable synthetic resin material 200 such as polyethylene or polypropylene in a molten state extruded from an extruder 198 is fed to a flow path in a discharge nozzle 190 via a flexible hose 196 and discharged downward from a discharge port 192. Is done. As described above, the through hole 84 formed in the outer member 76 of the upper mold portion 26 has the
The introduction notch 88 located on the front side in the movement direction is formed, and therefore the synthetic resin material 200 discharged from the outlet 192 is introduced into the through hole 84 through the introduction notch 88. Then, the rear side of the through-hole 84 moves across the discharge port 192, so that the synthetic resin material 2 in the through-hole 84 is moved.
00 is cut and separated from the outlet 192, and thus a required amount of the synthetic resin material 200 is supplied into the through hole 84.

Referring to FIGS. 1 and 2, the composite lid discharging means 150 includes a rotating turret mechanism 202 and a discharge chute 204. As is clearly shown in FIG. 2, an upright support 206 is also fixed on the support base 4, and the support 206 is attached to the rotating body 21 via a bearing 208.
0 is rotatably mounted. An input gear 212 is fixed to the lower end of the rotating body 210. This input gear 2
Numeral 12 is engaged with the gear 20 in the rotary compression molding mechanism 2, so that when a rotary drive source (not shown) is urged to rotate the rotating body 12 counterclockwise in FIG. The rotating body 210 of the rotating turret mechanism 202 is rotated clockwise in FIG. A turret plate 214 is fixed to the upper end of the rotating body 210, and twelve semicircular receiving openings 218 are formed in the peripheral portion of the turret plate 214 at intervals in the circumferential direction. The rotary compression molding mechanism 2 includes a stationary guide rail 2 extending outward from the vicinity of the downstream end of the compression molding area 140 along the lower mold portion 24 of the molding mold means 22 in the downstream direction.
20 are also provided, but such guide rails 220 are terminated in the composite lid discharge area 142. On the other hand, in the composite lid discharging means 150, a stationary guide rail 222 is provided which extends from the composite lid discharging area 142 downstream along the rotating turret plate 214 to the upstream end of the discharge chute 204. I have. As such, the outer lid 22 made of synthetic resin is molded with the inner lid 168 in association with the inner lid 168 as described in further detail below.
4 (FIGS. 12 to 14) is positioned on the lower mold portion 24 of the molding die means 22 and is conveyed to the composite lid discharge area 142, after which the composite lid discharge means 150 The turret plate 214 is accommodated in an accommodation opening 218 formed in the turret plate 214, and is conveyed to the unloading chute 204 as the turret plate 214 rotates. In a region from the composite lid discharge region 142 to the unloading chute 204, a stationary guide plate 225 extending below the turret plate 214 is provided together with the stationary guide rail 222,
The composite lid 226 carried into the storage opening 218 of the turret plate 214 is positioned and conveyed on the stationary guide plate 225, and is prevented from moving outward in the radial direction by the stationary guide rail 222. The composite lid 226 conveyed to the carry-out chute 204 is conveyed to an appropriate place such as a packaging place and discharged.

Next, the operation of the rotary compression molding mechanism 2 will be briefly described. As shown in FIG. 6, the inner lid supply area 136
In the above, the outer member 76 and the inner member 78 of the upper mold part 26 in the molding die means 22 are separated from the lower mold part 24 by a required distance upward. The pair of opening / closing members 62a and 62b of the restraining mechanism 64 in the lower mold portion 24 are positioned at the closed position, and the inner lid 168 supplied on the inner member 32 of the lower mold portion 24 in an inverted state is a pair of opening / closing members. It is located in the inner lid receiving space defined by the arc-shaped notches 68a and 68b of the members 62a and 62b (FIG. 4).
See also As can be understood by referring to FIG. 7 in conjunction with FIG. 6, when the mold 22 is moved from the inner lid supply area 136 toward the synthetic resin material supply area 138, the outer member 76 of the upper mold part 26 is moved. Is gradually lowered, and the inner lid 168 is inserted into a thin annular space 92 defined between the main part 80 and the additional part 82 of the outer member 76.
Skirt wall 184 is gradually accommodated. Before the outer member 76 of the upper mold part 26 descends to the required position, the lower mold part 2
The pair of opening and closing members 62a and 62 of the restraining mechanism 64 in FIG.
2b is moved to the open position shown by the two-dot chain line in FIG. 4 and is sufficiently separated from the skirt wall 184 of the inner lid 168, so that the outer member 76 is connected to the pair of opening / closing members 62a and 62a.
2b can be lowered without interference. On the other hand, the inner member 78 of the upper mold portion 26 is gradually raised. Then, when passing through the synthetic resin material supply area 138, as shown in FIG.
Is the outer member 3 of the lower mold part 24
0 is located at the lowermost position in contact with the upper surface of the zero. On the other hand, the lower surface of the inner member 78 of the upper mold portion 26 is positioned above the transparent cutout 86 formed in the outer member 76. As described above, when the molding die means 22 passes through the synthetic resin material supply area 138, the distal end of the synthetic resin material discharge nozzle 190 faces the transmission notch 86 formed in the outer member 76 of the upper mold portion 26. The synthetic resin material 200 in a molten state, which has passed through the discharge nozzle 190 and discharged from the discharge port 192 of the discharge nozzle 190,
8, is introduced into the through hole 84, is separated from the outlet 192, and is supplied into the through hole 84.

While the mold means 22 is moved through the compression molding area 140, as shown in FIGS.
The inner member 78 of the upper mold part 26 is gradually lowered.
As can be understood by referring to FIG. 10, the inner member 78 that is gradually lowered is formed through the through hole 8 of the outer member 76.
4 and comes into contact with the synthetic resin material 200 and is gradually lowered. As shown in FIG. 11, the synthetic resin material 200 is partially lowered through the opening 186 formed in the top wall 182 of the inner lid 168 and is formed on the upper surface of the inner member 32 of the lower mold portion 24. Recess 58
And flow in the recess 58 radially outward. The diameter of the recess 58 is the inner lid 168
Since the diameter of the opening 186 formed in the top wall 182 of the inner lid 168 is larger than that of the opening 186, the synthetic resin material 200 that has been caused to flow radially outward in the recessed portion 58 is
Is also brought into contact with the outer surface (the lower surface in FIG. 11).
Thus, a force is applied to the inner member 32 of the lower mold portion 24 downward from the synthetic resin material 200 compressed by the inner member 78 of the upper mold portion 26, and
A force is applied to the outer surface of the top wall 182 of the inner lid 168 to force the inner lid 168 upward. The above-mentioned force applied to the inner member 32 is applied to the inner member 3 against the elastic biasing action of the disc spring 48.
2 is lowered slightly (the elastic biasing force of the disc spring 48 that biases the inner member 32 of the lower mold portion 24 upward is
Is weaker than the elastic biasing force of the disc spring 106 which biases the inner member 78 of the inner lid 78 downward), thus the top wall 182 of the inner lid 168.
Some space is created between the inner member 32 and the upper surface periphery, and the synthetic resin material flows into such space. Thus, when the inner member 78 of the upper mold part 26 is lowered to the lowest position shown in FIG. 12, the synthetic resin material 200 is compression-molded into the outer lid 224 having a required shape. Part of the synthetic resin material 200 flows radially outward beyond the periphery of the top wall 182 of the inner lid 168, and is formed on the lower surface of the additional member 82 of the outer member 76 in the upper mold part 26. It flows into the recess 96. In addition, synthetic resin material 200
Is located inside the top wall 182 of the inner lid 168 (upper side in FIG. 12).
Also flows into the annular concave portion 94 formed on the lower surface of the main piece 80, and thus the outer lid 224 is connected to the inner lid 168 as required. While the mold means 22 is moved through the remaining area of the compression molding area 140, the mold means 2
2 is maintained in the state shown in FIG. 12, during which the outer lid 224 formed by compression is sufficiently cooled.

While the mold means 22 is being moved from the compression molding area 140 to the composite lid discharge area 142, first the outer member 76 in the upper mold section 26 begins to rise,
Thereafter, the inner member 78 starts to be lifted (FIG. 13).
When the outer member 76 in the upper mold portion 26 is raised by a required distance, the pair of opening / closing members 62a and 62b of the restraining mechanism 64 in the lower mold portion 24 are moved to the closed position, and the skirt wall 184 of the inner lid 168 is moved. The semicircular receiving space to be constrained is defined again. When the inner member 78 of the upper mold part 26 is raised, the inner member 32 of the lower mold part 24 is raised to the initial position by the elastic biasing action of the disc spring 48. As shown in FIG. 14, the composite lid discharge area 142
, The outer member 76 and the inner member 7 of the upper mold portion 26
8 are both separated upward from the inner lid 168 and the outer lid 224, and a composite lid 226 composed of the inner lid 168 and the outer lid 224 compressed in association with the inner lid 168 is combined with the composite lid 226 from the rotary compression molding mechanism 2. It is transferred to the lid discharging means 150.

FIGS. 15 to 19 show modifications of the mold means in the rotary compression molding mechanism. In this modification, the lower mold part 324 of the molding means 322 is used.
No concave portion is formed at the center of the upper surface of the movable inner member 332, and the upper surface of the inner member 332 is flattened. On the other hand, a suction means 381 is formed in the upper mold part 326 of the mold means 322. More specifically, an annular suction groove 383 is formed on the lower surface of the main part 380 of the outer member 376, and the suction means 381 is provided with the suction groove 383.
Thus, an opening is formed on the lower surface of the main piece 380.
The cross section of the suction groove 383 may be substantially semicircular. The suction groove 383 is smaller than the inner diameter of the top wall 182 of the metal inner lid 168, but the opening 18 formed in the top wall 182.
6 and is located opposite to the inner surface of the top wall 182 of the inner lid 168 located on the lower mold part 326. The suction groove 383 is connected to a vacuum source 389 via a suction path 385 formed in the main piece 380 and a control valve 387.
It is connected to the. Other configurations of the modified example may be substantially the same as the configurations of the above-described embodiments.

In the modified examples shown in FIGS. 15 to 19, as shown in FIG.
6 is lowered and brought into contact with or close to the inner surface of the top wall 182 of the inner lid 168, the suction passage 385 is connected to the vacuum source 389 via the control valve 387, and thus the inner lid 168 is connected to the upper mold part 326. Is attracted to the outer member 376. Therefore, as shown in FIG.
26, the synthetic resin material 200 is lowered, and a pressing force is applied to the inner member 332 of the lower mold part 324 via the synthetic resin material 200, whereby the lower member 378 is lowered. Even when the inner member 332 of the side mold part 324 is lowered against the elastic biasing action of the disc spring 348, the inner lid 168 located on the inner member 332 is moved together with the inner member 332 of the lower mold part 324. Without being lowered, it is adsorbed by the outer member 376 of the upper mold part 326 and is maintained at the initial position. Thus, the inner member 332 of the lower mold part 324 and the outer surface of the top wall 182 of the inner lid 168 (the lower surface in FIG. A space is generated therebetween, and the synthetic resin material 200 flows into the space as shown in FIG. 17, and the outer lid 224 is formed as required.
8). As shown in FIG. 19, when the outer member 376 of the upper mold part 326 is raised, the suction passage 385 is cut off from the vacuum source 389, so that the suction of the inner lid 168 is released, and the inner lid 168 is attached. Outer member 3 without
Only 76 is raised. Outer member 3 if desired
When raising 76, the suction passage 385 can be communicated with a compressed air source so that compressed air is ejected from the suction groove 383, and the inner lid 168 can be positively detached from the outer member 376.

Although the preferred embodiments and modifications of the molding apparatus constructed in accordance with the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to such embodiments and modifications, and the present invention is not limited thereto. It goes without saying that various other variations and modifications are possible without departing from the scope of the above. For example, in the illustrated embodiment, the mold means receives the supply of the synthetic resin material in the supply region of the synthetic resin material after receiving the supply of the inner cover material in the supply region of the inner cover material. The area may be arranged upstream of the inner lid supply area so that the inner lid is supplied after the synthetic resin material is supplied to the mold means.

[0037]

In the molding apparatus of the present invention, the inner lid is supplied in an inverted state on the lower mold portion of the molding die means, and therefore, the inner lid can be supplied to the molding die means at a sufficiently high speed and smoothly. it can. During the compression molding of the synthetic resin material, the pressure transmitted from the synthetic resin material flowing into the concave portion formed in the lower mold portion to the outer surface of the metal inner lid together with the lower mold portion,
Alternatively, the lower mold part and the metal inner lid are moved in accordance with the lower mold part by lowering the lower mold part by adsorbing the metal inner lid to the upper mold part by connecting the suction means formed in the upper mold part to the vacuum source. And the synthetic resin material is sufficiently satisfactorily flowed into the space formed between the top wall and the outer lid in the required form is compression molded.

Further, in the molding apparatus of the present invention, a restraining mechanism is attached to the lower mold part of the molding means.
By supplying the inner lid to the inner lid housing space in a state in which the pair of opening and closing members of the restraining mechanism are set to the closed position and defining the substantially semicircular inner lid housing space, the lower mold portion is moved to a required position. The inner lid can be positioned with sufficient precision. At the time of compression molding, the pair of opening and closing members of the restraining mechanism are set to the open position and sufficiently separated from the inner lid, and thus along the outer peripheral surface of the skirt wall of the inner lid without being hindered by the pair of opening and closing members. The synthetic resin material can be made to flow as required.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing the entirety of a preferred embodiment of a molding apparatus constituted according to the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a partial sectional view showing a molding die means in the molding apparatus shown in FIG. 1;

FIG. 4 is a partial plan view showing a restraining mechanism attached to a lower mold portion of the molding die means shown in FIG. 3;

5 is a partial side view showing a configuration for opening and closing a pair of opening and closing members in the restraining mechanism shown in FIG. 4;

FIG. 6 is a partial cross-sectional view taken along line BB of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG.

FIG. 7 is a partial cross-sectional view taken along line CC of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG.

FIG. 8 is a partial cross-sectional view taken along line DD of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG.

FIG. 9 is a partial cross-sectional view taken along line EE of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG.

FIG. 10 is a partial cross-sectional view taken along line FF of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG. 1;

FIG. 11 is a partial cross-sectional view taken along line GG of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG. 1;

FIG. 12 is a partial cross-sectional view taken along line HH of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG. 1;

FIG. 13 is a partial cross-sectional view taken along line II of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG. 1;

FIG. 14 is a partial cross-sectional view along the line JJ of FIG. 1 for explaining the operation of the molding die means in the molding apparatus shown in FIG. 1;

FIG. 15 is a partial cross-sectional view showing a molding die means in a modification of the molding device configured according to the present invention.

FIG. 16 is a partial cross-sectional view for explaining the operation of the mold means shown in FIG.

FIG. 17 is a partial cross-sectional view for explaining the operation of the mold means shown in FIG.

FIG. 18 is a partial cross-sectional view for explaining the operation of the molding die means shown in FIG.

FIG. 19 is a partial cross-sectional view for explaining the operation of the mold means shown in FIG.

[Explanation of symbols]

 2: rotary compression molding mechanism 22: molding die means 24: lower die part 26: upper die part 30: outer member of lower die part 32: inner member of lower die part 48: disc spring (elastic biasing means) 58: concave portion 62a: opening / closing member 62b: opening / closing member 64: restraining mechanism 76: outer member of the upper mold portion 78: inner member of the upper mold portion 84: through hole 88: introduction notch 136: inner lid supply area 138: synthetic resin material Supply area 140: Compression molding area 142: Composite lid discharge area 144: Inner lid supply means 146: Synthetic resin material supply means 150: Composite lid discharge means 168: Metal inner lid 182: Top wall of inner lid 184: Inner lid Skirt wall 186: Opening formed in top wall of inner lid 192: Outlet of synthetic resin supply means 200: Synthetic resin material 224: Synthetic resin outer lid 226: Composite lid 322: Molding means 324: Lower mold part48: disc spring 326: upper mold 332: lower mold portion of the inner member 376: upper mold portion of the outer member 378: upper mold portion of the inner member 381: suction means 383: suction groove 385: suction path 389: a vacuum source

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ identification symbol FI // B29L 31:56 B29L 31:56 (58) Investigated field (Int.Cl. ⁷ , DB name) B29C 43/04-43 / 42 B29D 31/00

Claims (13)

(57) [Claims] 1. A top surface wall and a skirt wall hanging down from a periphery of the top surface wall, and the opening is closed in relation to a metal inner lid having an opening formed in a central portion of the top surface wall. A molding device for compression-molding a synthetic resin outer lid to form a composite lid composed of a metal inner lid and a synthetic resin outer lid, and having a lower mold part and a lower mold part relative to the lower mold part. A mold means including an upper mold part which is moved up and down, and conveyed through an inner lid supply area, a synthetic resin material supply area, a compression molding area and a composite lid discharge area; and Inner cover supply means for supplying a metal inner cover; synthetic resin material supply means for supplying a molten synthetic resin material to the molding die means in the synthetic resin material supply area; A composite lid discharging means for discharging the lid from the mold means. A molding apparatus for compressing and molding the synthetic resin material into a synthetic resin outer lid in cooperation with the lower mold part and the upper mold part in the compression molding area; It is supplied on the lower mold portion of the molding die means in an inverted state with its outer surface facing downward, and the top surface of the metal inner lid supplied on the lower mold portion is provided on the upper surface of the lower mold portion. A concave portion larger than the opening formed in the face wall and smaller than the top wall is formed. During compression molding, the synthetic resin material flows through the concave portion, and the lower mold portion and the metal are removed from the synthetic resin material. A molding device wherein the lower mold portion and the metal inner lid are forcibly separated in a vertical direction by pressure transmitted to an outer surface of a top wall of the inner lid. 2. An outer member having a central portion formed with a through hole having a cross-sectional shape smaller than an opening formed in a top wall of a metal inner cover, And an inner member which is relatively moved up and down so as to be inserted into the through hole of the outer member, and a synthetic resin material is supplied to the through hole of the outer member. 2. The molding apparatus according to claim 1, wherein the molding device is forcibly caused to flow and caused to flow into the recess through an opening formed in a top wall of the metal inner lid. 3. The outside member of the upper mold part is formed with an introduction notch extending from the front side in the moving direction of the molding die means to the through hole, and the synthetic resin material supply means is provided in the synthetic resin material supply area. A synthetic resin material discharged from the synthetic resin material supply means when the upper mold portion of the molding die means passes through the synthetic resin material supply area. The molding device according to claim 2, wherein the molding device is inserted into the through hole from the introduction notch of the outer member, and is separated from the discharge port. 4. The lower mold portion includes an inner member and an outer member surrounding the inner member, wherein the recess is formed on an upper surface of the inner member, and the inner member is provided with an elastic biasing means. The inner member is elastically biased upward by the action, and during compression molding, the inner member is lowered against the elastic biasing action of the elastic biasing means by the pressure applied from the synthetic resin material to the inner member. The molding apparatus according to any one of claims 1 to 3. 5. A metal mold for opening and closing between a closed position surrounding substantially half the circumference of the skirt wall of the metal inner lid and an open position separated from the skirt wall of the metal inner lid supplied on the lower mold part. The molding apparatus according to any one of claims 1 to 4, wherein a restraining mechanism including a pair of opening / closing members is attached to the lower mold portion. 6. The opening and closing member is located at a closed position in the inner lid supply area and the composite lid discharge area, and the position of the metal inner lid is regulated by the opening and closing member. The opening / closing member of the restraining mechanism is located at the open position, the upper mold portion is inserted between the opening / closing members, and the synthetic resin outer lid extends radially outward beyond the metal inner lid. 6. The molding device according to claim 5, wherein the molding is performed by compression molding. 7. A top wall and a skirt wall hanging down from a peripheral edge of the top wall, wherein the opening is closed in relation to a metal inner lid having an opening formed in a central portion of the top wall. A molding device for compression-molding a synthetic resin outer lid to form a composite lid composed of a metal inner lid and a synthetic resin outer lid, and having a lower mold part and a lower mold part relative to the lower mold part. A mold means including an upper mold part which is moved up and down, and conveyed through an inner lid supply area, a synthetic resin material supply area, a compression molding area and a composite lid discharge area; and Inner cover supply means for supplying a metal inner cover; synthetic resin material supply means for supplying a molten synthetic resin material to the molding die means in the synthetic resin material supply area; A composite lid discharging means for discharging the lid from the mold means. A molding apparatus for compressing and molding the synthetic resin material into a synthetic resin outer lid in cooperation with the lower mold part and the upper mold part in the compression molding area; It is supplied on the lower mold part of the mold means in an inverted state with its outer surface facing downward, and the upper mold part has a radius larger than the top wall of the metal inner lid supplied on the lower mold part. The suction means is formed on the lower side inward in the direction and on the lower side in the radial direction outside of the opening formed on the top wall, and the suction means of the upper mold communicates with the vacuum source during compression molding. The metal inner lid is adsorbed to the upper mold part and the metal inner lid is separated upward from the lower mold part,
A molding apparatus, characterized in that: 8. An outer member in which a through hole having a cross-sectional shape smaller than an opening formed in a top wall of a metal inner lid is formed in a central portion, the upper mold portion includes: And an inner member which is relatively moved up and down to be inserted into the through hole of the outer member, wherein the suction means is opened at a lower surface of the outer member and is combined with the through hole of the outer member. A resin material is supplied, and the synthetic resin material is forced to flow by the inner member, and the upper surface of the lower mold portion and the top of the metal inner lid are passed through an opening formed in the top wall of the metal inner lid. The molding device according to claim 7, wherein the molding device is caused to flow between the outer surface of the face wall. 9. The outside member of the upper mold portion is formed with an introduction notch extending from the front side in the moving direction of the molding die means to the through hole, and the synthetic resin material supply means is provided in the synthetic resin material supply area. A synthetic resin material discharged from the synthetic resin material supply means when the upper mold portion of the molding die means passes through the synthetic resin material supply area. The molding apparatus according to claim 8, wherein the molding device is inserted into the through hole from the introduction notch of the outer member, and is separated from the discharge port. 10. A metal mold for opening and closing between a closed position surrounding substantially half the circumference of the skirt wall of the metal inner lid and an open position separated from the skirt wall of the metal inner lid supplied on the lower mold part. The molding apparatus according to any one of claims 7 to 9, wherein a restraining mechanism including a pair of opening and closing members provided is attached to the lower mold portion. 11. In the inner lid supply area and the composite lid discharge area, the opening / closing member is located at a closed position, and the position of the metal inner lid is regulated by the opening / closing member. The opening / closing member of the restraining mechanism is located at the open position, the upper mold portion is inserted between the opening / closing members, and the synthetic resin outer lid extends radially outward beyond the metal inner lid. The molding apparatus according to claim 10, wherein the molding is performed by compression molding. 12. A top surface wall and a skirt wall hanging down from a periphery of the top surface wall, and the opening is closed in relation to a metal inner lid having an opening formed in the center of the top surface wall. A molding device for compression-molding a synthetic resin outer lid to form a composite lid composed of a metal inner lid and a synthetic resin outer lid, and having a lower mold part and a lower mold part relative to the lower mold part. A mold means including an upper mold part which is moved up and down, and conveyed through an inner lid supply area, a synthetic resin material supply area, a compression molding area and a composite lid discharge area; and Inner cover supply means for supplying a metal inner cover; synthetic resin material supply means for supplying a molten synthetic resin material to the molding die means in the synthetic resin material supply area; A composite lid discharging means for discharging the lid from the mold means. A molding apparatus for compressing and molding the synthetic resin material into a synthetic resin outer lid in cooperation with the lower mold part and the upper mold part in the compression molding area, wherein the metal inner lid is The outer mold is supplied in an inverted state on the lower mold part of the mold means, and the lower mold part surrounds a substantially half circumference of the skirt wall of the metal inner lid supplied thereto. A molding apparatus, further comprising a restraining mechanism including a pair of opening and closing members that can be opened and closed between a position and an open position separated from a skirt wall of the metal inner lid. 13. In the inner lid supply area and the composite lid discharge area, the opening / closing member is located at a closed position, and the position of the metal inner lid is regulated by the opening / closing member. The opening / closing member of the restraining mechanism is located at the open position, the upper mold portion is inserted between the opening / closing members, and the synthetic resin outer lid extends radially outward beyond the metal inner lid. 13. The molding apparatus according to claim 12, wherein the molding is performed by compression molding.