JPH04216920A - Device for producing synthetic resin product - Google Patents

Abstract

PURPOSE:To aim at the separate proper setting of the effective utilization time of each process as required without reducing overall efficiency in a synthetic-resin product production device. CONSTITUTION:A synthetic-resin product production device is provided with a plurality of molding dies, a main conveying device 2 including a plurality of holding mechanisms detachably holding each of the molding dies, a resin filling means 4, a cooling means 6 and a product discharging means 8. The resin filling means 4 extracts the molding dies from the main conveying device 2, fills the molding dies with a resin and returns the molding dies to the main conveying device 2. The cooling means 6 extracts the molding dies from the main conveying device 2, cools the molding dies, and returns the molding dies to the main conveying device 2. The product discharge means 8 extracts the molding dies from the main conveying device 2, discharges molded products from the molding dies, and returns the molding dies to the main conveying device 2.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a resin filling process in which a synthetic resin in a softened and molten state is filled into a mold, a cooling process in which the mold filled with synthetic resin is cooled, and a molded product is discharged from the mold. This invention relates to a synthetic resin product manufacturing device that performs a product discharge process.

0002

[Prior Art] Various synthetic resin products such as hollow containers such as bottles, container lids, and so-called preforms that are made into hollow containers by blow molding are usually made by filling a mold with synthetic resin in a softened and molten state. molded into the desired shape (injection filling of synthetic resin, compression following synthetic resin filling, etc.), cooled,
After that, the molded article is discharged from the mold, thereby producing the molded article. As well known to those skilled in the art, a rotary synthetic resin product manufacturing apparatus has been proposed and put into practical use as a manufacturing apparatus for carrying out such manufacturing conveniently.

The rotary synthetic resin product manufacturing apparatus described above includes a molding apparatus main body that moves a plurality of molds through an endless conveyance path that is usually circular. A synthetic resin filling area, a cooling area, and a product discharge area are sequentially arranged in the endless conveyance path, and while each mold is moved through the synthetic resin filling area, a softened and molten state is synthesized in each of the molds. The synthetic resin filled within each of the molds is cooled while the resin is filled and moved through a cooling zone, and the product is discharged from each of the molds while being moved through a product discharge zone.

0004

[Problems to be Solved by the Invention] In the rotary synthetic resin product manufacturing apparatus described above, the synthetic resin filling process, cooling process, and product discharging process are carried out sequentially and continuously while each of the molds is conveyed through the endless conveyance path. will be carried out. Therefore, the time required for each step necessarily determines the conveyance speed of the mold through the endless conveyance path. In other words, the relative ratio of each step to the time required to make one rotation of the mold through the endless conveyance path is uniquely defined, and there is virtually no degree of freedom in the time available for each step. In the normal case, cooling takes a fairly long time, and therefore the cooling time determines the transport speed of the mold and thus the molding efficiency. When molding products with different dimensions or shapes, or different synthetic resin materials, and therefore different cooling times, it is necessary to replace not only the mold but also the entire molding equipment (endless conveyance path length, mold conveyance speed, etc.). It will be necessary to design.

[0005] The present invention has been made in view of the above facts, and its main technical problem is to independently and independently utilize the effective use time of each process without reducing the overall molding efficiency. It is an object of the present invention to provide a new and improved synthetic resin product manufacturing apparatus that can be set appropriately.

[0006]

[Means for Solving the Problems] The gist of the solution of the present invention for achieving the above technical problem is to provide a main conveyance device including a plurality of mold holding mechanisms that are moved through an endless conveyance path, Each of the plurality of mold holding mechanisms is configured to removably hold each of the molds, that is, each of the molds can be held or removed as necessary, and is used during the synthetic resin filling process and the cooling process. Regarding the performance of at least one of the steps of ejecting the product, the mold is taken out from the mold holding mechanism, the required process is performed, and then the mold is returned to the mold holding mechanism.

That is, according to the present invention, a main conveyance device includes a plurality of molds and a plurality of mold holding mechanisms that are moved through an endless conveyance path and that releasably hold each of the molds. , and further, (a) receiving the mold from the mold holding mechanism at a resin filling and unloading position in the endless conveyance path, filling the mold with a synthetic resin in a softened and molten state, and discharging the resin in the endless conveyance path; Resin filling means for returning the mold to the mold holding mechanism at a resin filling return position downstream from the resin filling and taking out position;
b) receiving the mold from the mold holding mechanism at a cooling take-out position in the endless conveyance path, moving the mold through a cooling medium, and providing a cooling return position downstream of the cooling take-out position in the endless conveyance path; or (c) receiving the mold from the mold holding mechanism at a product discharge/take-out position in the endless conveyance path and discharging the product from the mold. and a product discharge means for returning the mold to the mold holding mechanism at a product discharge return position downstream of the product discharge and take-out position in the endless conveyance path. A synthetic resin product manufacturing apparatus is provided.

[0008]

[Operation] In the synthetic resin product manufacturing apparatus of the present invention, by appropriately selecting the interval between the mold take-out position and the return position in the endless conveyance path, and also by appropriately selecting the interval between the mold take-out position and the return position. By appropriately selecting the number of molds to be present in the mold, it is possible to appropriately set the effective utilization time of a specific process without being directly limited by the moving speed of the mold holding mechanism in the main conveyance device. . Therefore, the effective utilization time of each process can be appropriately set as necessary without reducing the overall efficiency, and the time required for each process can be adjusted as needed due to changes in the dimensions or shape of the product or the synthetic resin material. Even if the value changes, this can be handled without changing the design of the entire manufacturing equipment.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a synthetic resin product manufacturing apparatus constructed according to the present invention will be described in more detail below with reference to the accompanying drawings.

Referring to FIG. 1, the illustrated manufacturing apparatus is comprised of a main conveyance device 2, resin filling means 4, cooling means 6, and product discharge means 8.

Referring to FIG. 2 in conjunction with FIG. 1, the main transport device 2 has a stationary support shaft 10 extending substantially vertically;
This stationary support shaft 10 has an upper bearing 12 and a lower bearing 14.
A rotary support body 16 is rotatably mounted via. This rotary support 16 is connected via suitable drive coupling means (not shown) to a rotary drive source (not shown), which may be an electric motor, and is continuously driven in the direction indicated by arrow 18 in FIG. It is rotated. The rotating support 16 has a cylindrical inner circumferential wall 20, a cylindrical outer circumferential wall 22, an annular upper wall 24, and an annular lower wall 26. These inner peripheral wall 20, outer peripheral wall 22,
The upper wall 24 and the lower wall 26 are integrally formed. Upper wall 2
4 is made to protrude outward in the radial direction beyond the outer circumferential wall 22, and as understood from FIG. 1, the outer circumferential edge of the upper wall 24 is formed into a regular tridecagon. An annular member 28 is fixed to the lower end of the outer circumferential surface of the outer circumferential wall 22 . This annular member 28
The outer peripheral edge of the upper wall 24 is also formed into a regular tridecagonal shape corresponding to the outer peripheral edge of the upper wall 24. As clearly shown in FIG. 2, an upper protruding wall 30 and a lower protruding wall 3 are provided on the outer peripheral surface of the annular member 28.
2 is formed, and a recess 34 having a rectangular cross section is formed between both protruding walls 30 and 32. On the upper surface of the upper wall 24, 30 pairs of upright support pieces 36 are provided at equal intervals in the circumferential direction.
is fixed. Each pair of upright support pieces 36 has an upper pin 38 and a lower pin 40 mounted thereon that extend substantially horizontally, and an upper lever 42 and a lower lever 44 are pivotally mounted on the upper pin 38 and the lower pin 40, respectively. has been done. The upper lever 42 extends in the radial direction, and has a pin 46 fixed to its inner end that projects radially inward, and a cam roller 48 is rotatably mounted on the pin 46. Similarly, the lower lever 44 also extends in the radial direction, and a pin 50 that projects radially inward is fixed to the inner end thereof, and a cam roller 52 is rotatably mounted on the pin 50. A compression coil spring 54 is disposed between the outer side of the lower lever 44 and the upper wall 24 of the rotary support 16, and the spring 54 elastically biases the lower lever 44 clockwise in FIG. . On the other hand, the stationary support shaft 10
A cam member 56 is fixed to the upper end of. The cam member 56 has a circular bottom wall 58 and a cylindrical side wall 60 extending upward from the periphery of the bottom wall 58, and the side wall 60 is formed with an upper annular cam groove 62 and a lower annular cam groove 64. . A cam roller 4 attached to the inner end of the upper lever 42
8 is accommodated in the upper annular cam groove 62. As will be discussed in more detail below, rotating support 16 is indicated by arrow 18 (FIG.
) During continuous rotation in the direction shown in FIG. 2, the upper lever 42 moves as shown in FIG.
It can be pivoted as required between the closed position shown in solid lines in FIG. 2 and the open position shown in two-dot chain lines in FIG. Lower lever 44
A cam roller 52 mounted on the inner end of the cam roller 52 is housed in a lower annular cam groove 64. As will be described in more detail later, due to the cam action of the lower annular cam groove 64 and the elastic biasing action of the spring 54, the lower lever 44 can be moved between the locked position shown in solid lines in FIG. 2 and the released position shown in two-dot chain lines in FIG. It can be rotated as required between the two. The lower lever 44 is connected to the outer peripheral edge of the upper wall 24 of the rotation support 16 and the annular member 28.
In cooperation with the outer circumferential surface of the locking member, a locking means for releasably locking the closing mechanism described below is constituted.

Continuing the explanation with reference to FIG. 3 as well as FIG. 2, 30 closing mechanisms 66 are removably attached to the outer periphery of the rotary support 16 at equal intervals in the circumferential direction. Each of the closure mechanisms 66 has a rectangular substrate 68. An upper locking piece 70 and a lower locking piece 72 are provided on the rear surface of the board 68.
is fixed. An upper support block 74 and a lower support block 76 are fixed to the front surface of the substrate 68. The upper support block 74 has a rectangular parallelepiped-shaped main portion 78 and a protruding portion 80 that projects upward from the main portion 78 . An annular guided groove 82 having a trapezoidal cross-sectional shape is formed in the protrusion 80 . A circular opening 84 is formed in the upper support block 74 and extends vertically therethrough, and a sliding member 88 is slidably inserted into the opening 84 via a bushing 86 fixed thereto. sliding member 88
The main part has a cylindrical shape with an outer diameter corresponding to the inner diameter of the bushing 86, and an engaged member 90 is fixed to the upper end thereof. The engaged member 90 is formed with an annular engaged groove 92 having a trapezoidal cross-sectional shape, and the outer end of the upper lever 42 is engaged with the engaged groove 92. A substantially semicircular opening is formed at the outer end of the upper lever 42, and the engaged member 90 is inserted into the opening.
is accepted. The cross-sectional shape of the edge defining the opening at the outer end of the upper lever 42 is similar to the engaging groove 9.
Although it has a trapezoidal shape corresponding to the cross-sectional shape of No. 2, the above-mentioned engaging groove 9
It is somewhat smaller than the cross-sectional shape of No. 2. When the upper lever 42 is in the closed position shown in solid lines in FIG. 2, the sliding member 88 is in the closed position shown in solid lines in FIGS. As shown in FIG. 2, the upper lever 42 is not engaged with the engaged member 90, and there is a slight gap between them), and the upper lever 42 is in the open position shown by the two-dot chain line in FIG. When pivoted into position, the upper lever 42 engages and raises the engaged member 90, causing the sliding member 88 to rise.
is placed in the open position shown by the two-dot chain line in FIGS. 2 and 3. An inverted cup-shaped closing portion 94 is integrally formed at the lower end of the sliding member 88 . This closing portion 94 includes a circular wall 96,
It has a cylindrical wall 98 depending from the periphery of the circular wall 96 and a closing protrusion 100 depending from the center of the circular wall 96. The lower end of the inner circumferential surface of the cylindrical wall 98 is formed into an inverted conical shape that slopes downward and outward in the radial direction. sliding member 8
A compression coil spring 102 is interposed between the closing portion 94 of No. 8 and the upper support block 74. Such spring 102 resiliently biases sliding member 88 downwardly. The lower support block 76 has a rectangular parallelepiped-shaped main portion 104 and a protruding portion 106 projecting downward from the main portion 104. An annular guided groove 108 having a trapezoidal cross-sectional shape is formed in the protrusion 106 . An inlet passage 110 is formed in the center of the lower support block 76 and penetrates in the vertical direction. The cross-sectional shape of the inflow path 110 may be circular. The lower support block 76 also has an outflow passage 112 formed therein. The outflow channel 112 extends laterally from the outer surface of the main body 104 and then extends concentrically with respect to the inflow channel 110 upwardly to the top surface of the main body 104 . Such a closing mechanism 66 constitutes a holding mechanism 67 together with the above-mentioned locking means (upper lever 42, lower lever 44, etc.).

The closing mechanism 66 is attached to and removed from the rotary support 16 in the following manner. When attaching the closing mechanism 66 to the rotation support 16, the rotation support 1
The upper lever 42 at 6 is in the closed position shown in solid lines in FIG. The lower lever 44 is located in the open position shown by the two-dot chain line in FIG. In such a state, the closure mechanism 66 is in a substantially upright position (i.e., in FIG.
to the state shown in FIG. 4) and with the substrate 68 facing radially inward, it is carried into the locking means (upper lever 42, lower lever 44, etc.) of the rotation support 16. At this time, the lower locking piece 72 fixed to the lower part of the back surface of the base plate 68 of the closing mechanism 66 is inserted into the recess 34 formed on the outer peripheral surface of the annular member 28 in the rotation support 16, and the base plate 68 The upper part of the back surface of the rotary support member 66 is brought into contact with the outer peripheral edge of the upper wall 24, thereby regulating the radial position of the closing mechanism 66 with respect to the rotary support member 16. Thereafter, the lower lever 44 is pivoted into the locking position shown in solid lines in FIG. As a result, the tip of the lower lever 44 is engaged with the lower surface of the upper locking piece 70 fixed to the upper part of the back surface of the base plate 68 of the closing mechanism 66, and the closing mechanism 66 is slightly raised. The vertical height of the recess 34 is slightly larger than the vertical thickness of the lower locking piece 72 of the closing mechanism 66. Therefore, when the closing mechanism 66 is slightly raised, the upper surface of the lower locking piece 72 is placed above the recess 34. A closing mechanism 6 is brought into abutment against the end face and thus for the rotary support 16.
6 is regulated in the vertical direction. When removing the closing mechanism 66 from the rotating support 16, the lower lever 44 is pivoted to the open position shown by the two-dot chain line in FIG. 2, and is separated from the upper locking piece 70 of the closing mechanism 66. Thereafter, by moving the closing mechanism 66, the closing mechanism 16 is separated from the rotary support 66.

The above-mentioned closing mechanism 66 is generally designated by the number 1.
A mold indicated by 14 is removably attached. The molding die 114 will be described with reference to FIGS. 4 and 5. The illustrated molding die 114 is composed of one male mold 116 and two female molds 118. The male mold 116 has a disc-shaped base 120 and a columnar part 122 extending upward from the center of the base 120.
and has. The circumferential side surface of the columnar portion 122 has a truncated conical shape with an outer diameter that gradually decreases upward.
The upper surface is hemispherical. As clearly shown in FIG. 5, the male mold 116 is formed with a hole 124 extending upwardly from the center of the bottom surface of the base 120 thereof to the upper end of the columnar portion 122. A pipe member 126 is disposed within this hole 124,
An inflow passage 128 is defined within the tube member 126 and the tube member 12
An outflow path 130 is defined on the outside of 6. Pipe member 126
A connecting flange 132 is integrally formed at the lower end of the male die 116.
0, the tube member 126 is fixed in place within the hole 124. A plurality of through holes 134 (one of which is shown in FIG. 5) are formed in the connecting flange 132 at intervals in the circumferential direction. As shown in FIG. 2, when the mold 114 is installed in the closing mechanism 66 as required, the upper end of the inlet passage 110 formed in the lower support block 76 of the closing mechanism 66 is connected to the inlet passage 128 of the male mold 116. The upper end of the outflow passage 112 formed in the lower support block 76 is connected to the outflow passage 130 of the male die 116 through the through hole 134 formed in the connecting flange 132. Four blind holes 136 are formed in the base 120 of the male mold 116 at equal intervals in the circumferential direction, extending downward from the upper surface thereof. 2 female molds 118
have substantially the same shape, and when combined as required, form a substantially cylindrical shape. That is, each of the female molds 118 has a substantially semi-cylindrical shape and has a substantially flat joint surface 138 and a substantially semi-cylindrical outer peripheral surface 140. As shown in FIGS. 3 and 5, the two female molds 118 are assembled as desired by mating their mating surfaces 138 together. Two pins 142 hanging downward are fixed to the lower end surface of each of the female molds 118, and these pins 142 are connected to the male mold 1.
The female mold 118 is inserted into the blind hole 136 formed in the base 120 of the male mold 116.
are positioned and assembled as required. male type 11
6 and two female molds 118 are combined as shown in FIG. 5, they define a molding cavity 144 having an inverted cup shape elongated in the vertical direction. A cutout 146 having a semicircular cross-sectional shape is formed at the upper end of each of the female molds 118 , and the cutouts 146 cooperate with each other to form a resin filling which extends from the upper end of the molding cavity 144 to the upper surface of the female mold 118 . A hole 148 is formed. As can be seen by referring to FIGS. 2 and 3, a male mold 116 and two female molds 118
The mold 114, assembled in the desired manner to define a mold cavity 144, is mounted on the lower support block 76 of the closure mechanism 66. In order to pivot the upper lever 42 of the rotary support 16 to the closed position shown in solid lines in FIG.
When the sliding member 88 is lowered from the open position shown by the dashed line to the closed position shown by the solid line, the closing part 94 formed at the lower end of the sliding member 88 is brought into engagement with the upper end of the mold 114. More specifically, the cylindrical wall 98 of the closing portion 94 is connected to the mold 114.
The mold 114 is engaged with the outer periphery of the upper end, thus positioning the mold 114 at a predetermined position relative to the closing mechanism 66, and the closing protrusion 100 of the closing portion 94 is inserted into the resin filling hole 148 of the mold 114. Resin filling hole 1
48 is occluded. As shown in FIGS. 3, 4, and 5, the outer peripheral surface 140 of each female die 118 has two semicircular locking recesses 150 and 152 spaced apart in the vertical direction.
is formed. When the two female molds 118 are assembled as desired, each of the locking recesses 150 and 152 forms an annular recess. As shown in FIG. 3, two blind locking holes 154 and 156 are formed in each of the recesses 150 and 152 at intervals in the circumferential direction. These blind locking holes 154 and 156 extend substantially horizontally and parallel to the mating surface 138 of the female mold 118 (and thus perpendicular to the opening and closing direction of the female mold 118). Locking recesses 150 and 152 and blind locking holes 154 and 156 are utilized when opening and closing mold 114, as will be further discussed below.

Continuing the explanation with reference to FIG. 1 again, the rotary support 16 in the main conveyance device 2 is continuously rotated in the direction shown by the arrow 18, and each of the holding mechanisms 67 including the closing mechanism 66 is made of resin. Filling/unloading position 158, resin filling/returning position 160, cooling/unloading position 162, cooling/returning position 164
, product discharge take-out position 166 and product discharge return position 168
It is conveyed through sequentially.

The resin filling means 4 removes the mold 11 from each of the holding mechanisms 67 at the resin filling and removal position 158.
4 and fill the resin filling hole 148 of the mold 114 (Fig.
), the synthetic resin in a softened and molten state is filled into the molding cavity 144, and the mold 114 is returned to each of the holding mechanisms 67 at the resin filling return position 160. Referring to FIGS. 6 and 8 together with FIG. 1, the resin filling means 4 in the illustrated embodiment includes an intermittent movement mechanism composed of a rotary take-out mechanism 170, a linear transfer mechanism 172, and a rotary return mechanism 174. are doing. In FIG. 8, the rotary take-out mechanism 170 intermittently takes out the mold 114 from the holding mechanism 67 at the resin filling and take-out position 158, and
76, the linear transfer mechanism 172 intermittently transfers the mold 114 from the resin filling position 176 to the return preparation position 178, and the rotary return mechanism 174 intermittently transfers the mold 114 from the resin filling position 176 to the return preparation position 178. Fill back position 160
and returned to the holding mechanism 67.

Continuing the description with reference to FIGS. 6, 8, and 11, a stationary support plate 180 extends along the periphery of the main conveyance device 2 from the resin filling/unloading position 158 to the resin filling/returning position 160. is installed. This stationary support base 1
80 has a substantially horizontal upper surface 182;
2 constitutes a guide surface that guides the lower end of the mold 114 being moved. As shown in FIG. 11, a substantially cylindrical shaft support 184 is attached to a predetermined portion of the lower surface of the stationary support base 180. A substantially vertically extending rotating shaft 186 of the rotary take-out mechanism 170 is rotatably mounted on the shaft support 184. This rotating shaft 186 is connected to the stationary support base 1
A support block 188 having a square cross section is fixed to the upper surface of the support block 80 . As clearly illustrated in FIG.
Arms 190 and 191 extending substantially horizontally through the support block 188 are attached to the support block 88 so as to be movable in the horizontal direction. The two arms 190 extend parallel to each other at intervals in the vertical direction, and similarly the two arms 191
They also extend parallel to each other at intervals in the vertical direction. The arms 190 and 191 extend perpendicularly to each other, and therefore, the four protruding ends protruding from the four sides of the support block 188 are arranged at angular intervals of 90 degrees. ing. A gripping member 192 is fixed to each of the protruding ends of arms 190 and 191. The outer surface of the gripping member 192 is formed into an arcuate concave surface, and the curvature of the concave surface corresponds to the curvature of the outer peripheral surface of the mold 114 (more specifically, the outer peripheral surface 140 of the female mold 118). An air cylinder mechanism (not shown) is housed within the support block 188, and the action of the cylinder mechanism causes the arms 190 and 191 to be selectively moved between the positions shown by the solid line and the position shown by the two-dot chain line in FIG. It is located in Thus, the gripping members 192 fixed to the protruding ends of the arms 190 and 191 can be selectively positioned with one in the protruding operative position and the other in the retracted non-operative position. The rotating shaft 186 of the rotary take-out mechanism 170 is
Although not shown, it is connected to a drive source, which may be an electric motor, through a suitable drive connection means, and is rotated intermittently every 90 degrees in the direction shown by arrow 194 in FIG.

The rotary return mechanism 174 is also the rotary take-out mechanism 1.
The configuration is substantially the same as that of 70. That is, FIGS. 6 and 12
As shown in the figure, a substantially cylindrical shaft support 196 is attached to a predetermined portion of the lower surface of the stationary support base 180, and a substantially vertically extending rotating shaft 198 of the rotary return mechanism 174 is rotatably attached to the shaft support 196. is installed on. This rotating shaft 198 extends upward beyond the upper surface of the stationary support base 180, and a support block 200 having a square cross-sectional shape is fixed to this portion. As clearly shown in FIG.
arms 202 and 2 extending substantially horizontally through the
03 is mounted so as to be movable in the horizontal direction. The two arms 202 extend parallel to each other at intervals in the vertical direction, and similarly the two arms 203 extend parallel to each other at intervals in the vertical direction. The arms 202 and 203 extend perpendicularly to each other, and therefore, the four protruding ends protruding from the four sides of the support block 200 are arranged at angular intervals of 90 degrees from each other. ing. A gripping member 204 is fixed to each of the protruding ends of the arms 202 and 203. The gripping member 204 has a crescent shape, and the curvature of its concave surface corresponds to the curvature of the outer peripheral surface of the mold 114 (more specifically, the outer peripheral surface 140 of the female mold 118). A pneumatic cylinder mechanism (not shown) is housed within the support block 200, and the arms 202 and 203 are operated by the cylinder mechanism.
is selectively positioned at the position shown by the solid line and at the position shown by the two-dot chain line in FIG. Thus, arms 202 and 2
One of the gripping members 204 fixed to the protruding end of 03 is selectively positioned at a protrusion operating position and the other at a retracted non-operating position. The rotary shaft 198 of the rotary return mechanism 174 is also connected to a drive source, which may be an electric motor, through a suitable drive connection means (not shown), and is rotated at intervals of 90 degrees in the direction shown by arrow 194 in FIG. It is forced to rotate.

As clearly shown in FIG. 8, a stationary guide rail 206 is also provided which extends above the stationary support base 180 along the path of travel of the mold 114 in the resin filling means 4. This guide rail 206 is connected to the rotary take-out mechanism 1
70, an extraction arcuate portion 208 extending in an arc shape from the resin filling and extraction position 158 to the resin filling position 176, centered on the central axis of the rotating shaft 186 of the rotary shaft 186;
It has a linear part 210 that extends linearly from the position 178 to the return preparation position 178, and a return arc part 212 that extends in an arc from the return preparation position 178 to the resin filling return position 160.

Referring to FIGS. 6, 7, and 10, in relation to the resin filling position 176, the mold 1
A filling head 214 of a resin filling mechanism is disposed above the mold 14, and a mold lifting means 216 is disposed below the mold 114. The resin filling head 214 has a substantially horizontal lower surface, and has a resin outlet opening on the lower surface. The configuration of the resin filling mechanism itself does not constitute a new feature in the illustrated manufacturing apparatus improved according to the present invention, and therefore a detailed description of the configuration of the resin filling mechanism itself will be omitted herein. The mold lifting means 2
16 includes a pneumatic cylinder mechanism 218. A cylinder case 220 of this cylinder mechanism 218 is fixed at a predetermined position below the stationary support base 180, and its output rod 222 is made to project upward from the cylinder case 220 substantially vertically. Cylinder mechanism 218
An elevating lever 224 is fixed to the output rod 222 of. The lift lever 224 extends substantially horizontally, and a substantially horizontal support surface 226 that supports the lower end of the mold 114 is formed at its tip. The lift lever 224 further has two circular openings 22 spaced apart from each other.
8 is formed, and a cylindrical bushing 230 is fixed to the opening 228. On the other hand, the cylinder case 220 of the cylinder mechanism 218 has the opening 22.
8, two guide pins 2 extending substantially vertically.
32 is fixed, and the guide pin 232 is inserted through the bushing 230. As will be further described later, by the action of the cylinder mechanism 218, the elevating lever 224 can be moved up and down as appropriate between a lowered position shown by a two-dot chain line in FIG. 6 and a solid line in FIG. 7, and a raised position shown by a solid line in FIG. . During such lifting and lowering, the bushing 230 fixed to the lifting lever 224 is guided by the guide pin 232, so that the lifting lever 224 can be moved up and down in the vertical direction with sufficient precision as required. When the lift lever 224 is positioned at the lowered position, the lift lever 224
The support surface 226 of is the top surface 182 of the stationary support base 180.
virtually coplanar with the When the lift lever 224 is raised to the raised position, the mold 114 positioned above it is raised, and the upper end of the mold 114 is pressed against the filling head 214 of the resin filling mechanism. In this way, the resin discharge port formed in the filling head 214 is connected to the resin filling hole 1 existing on the upper surface of the mold 114.
48 (FIG. 5) and thus fill head 21
By discharging the softened and molten resin from the resin discharge port 4, the mold 114 can be filled with the softened and molten resin as required.

Next, the linear transfer mechanism 172 will be described with reference to FIGS. 6, 7, 9, and 10. On the lower surface of the stationary support base 180, there is an upright support extending substantially vertically downward therefrom. A board 234 is fixed. This upright support plate 234 extends straight along the transfer path of the mold 114 from the resin filling position 176 to the return preparation position 178, and has a substantially horizontally extending guide rail 236 fixed to its surface. There is. A sliding block 238 is slidably mounted on this guide rail 236, and a support block 240 is fixed to this sliding block 238. An output lever 242 of a moving mechanism is rotatably connected to the front surface of this support block 240. The moving mechanism in which only the tip of the output lever 242 is illustrated is as follows:
The support block 240 and sliding block 238 are reciprocated along the guide rail 236 between the resin filling position shown in FIG. 7 and the return preparation position shown in FIG. Since such a moving mechanism itself may be of a well-known type, a detailed explanation of its configuration will be omitted in this specification. The support block 240 has a rectangular parallelepiped shape, and a through opening extending in the vertical direction is formed in the center thereof. A lifting member 244 is provided in the through opening having a circular cross-sectional shape.
A cylindrical main portion 246 is slidably inserted therein. The elevating member 244 has a large-diameter upper portion 248, and a relatively large recess 250 is formed in the upper half of the upper portion 248. As can be understood by referring to FIGS. 6, 7, and 10, the recess 250 is open at the top and at the left side in FIGS. 6, 7, and 10. The cylindrical member 2 is attached to the upper part 248 of the elevating member 244.
52 is fitted so as to be movable up and down. Corresponding to the left side of the recess 250 being open, the left side of the upper half of the cylindrical member 252 is also cut out. When the support block 240 is moved back from the return preparation position shown in FIG. 6 to the resin filling position shown in FIG. was forced to enter. A main part 246 of the elevating member 244 penetrates the support block 240 and protrudes downward, and a pneumatic cylinder mechanism 25 is attached to the lower end of the main part 246.
No. 4 cylinder case 256 is fixed. The elevating member 244 is also formed with a hole 258 extending through its center, and the output rod 26 of the cylinder mechanism 254 is connected to the elevating member 244.
0 extends upwardly through this hole 258. A connecting rod 262 that passes through the elevating member 244 and extends substantially horizontally is connected to the upper end of the output rod 260, and both ends of the connecting rod 262 are fixed to the cylindrical member 252. The upper part 248 of the elevating member 244 has an upper part 248.
An opening 263 extending in the vertical direction is formed to allow relative vertical movement of the connecting rod 262 with respect to the connecting rod 262. When the rod 260 of the cylinder mechanism 254 is retracted, the cylindrical member 252
is lowered, and the upper end of the cylindrical member 252 is substantially aligned with the upper end of the elevating member 244. When the rod 260 of the cylinder mechanism 254 is extended,
The cylindrical member 252 is raised relative to the elevating member 244, and as shown in FIG. Further, on the surface of the upright support plate 234,
Cam rail 26 located below the guide rail 236
4 are arranged. The cam rail 264 is composed of a stationary rail member 266 that extends substantially horizontally and a movable rail member 268 whose right end portion in FIGS. 6 and 7 is pivotally connected to the stationary rail member 266. The output rod 2 of the pneumatic cylinder mechanism 270 is located at the other end of the movable rail member 268, that is, the left end in FIGS. 6 and 7.
72 are rotatably connected. Cylinder mechanism 270
The cylinder case 274 is fixed to the upright support plate 234 via a suitable bracket (not shown). When the rod 272 of the cylinder mechanism 270 is retracted, the movable rail member 268 moves as shown in FIG.
It is located in a normal position extending in line with the stationary rail 266. When the rod 272 of the cylinder mechanism 270 is extended, the movable rail member 268 is pivoted to the raised position about its right end, as shown in FIG. As clearly shown in FIG.
A support plate 275 is fixed to a cylinder case 256 fixed to the lower end of the cylinder 44, and a cam roller 278 is rotatably mounted on the support plate 275 via a short shaft 276. Further, elastic means 280, which may be a compression coil spring, is interposed between the upper surface of the support block 240 and the lower surface of the large diameter upper portion 248 of the elevating member 244. The elastic means 280 elastically displaces the elevating member 244 upward, and moves the cam roller 278 toward the cam rail 26.
Press it against the bottom surface of 4. When the movable rail member 268 of the cam rail 264 is in the normal position shown in FIG. 6, the elevating member 244 is in the lowered position shown in FIG. In this lowered position, the upper end of the elevating member 244 is connected to the upper surface 182 of the stationary support base 180.
is substantially consistent with On the other hand, as shown in FIG. 7, when the elevating member 244 is positioned at the resin filling position 176 and the movable rail member 268 is pivoted to the raised position, the elevating member 244 is raised somewhat and its upper end is placed on the stationary support. It projects upwardly somewhat beyond the top surface 182 of the base 180.

The operation of the resin filling means 4 as described above will be summarized as follows. As shown in Figure 11,
The holding mechanism 67 of the main conveyance device 2 is located at the resin filling and removal position 1.
58, the sliding member 88 of the closing mechanism 66 in the holding mechanism 67 is raised to the open position, and the closing portion 94 is separated upward from the mold 114. Therefore, the mold 114 is in a state where it can be removed from the closing mechanism 66. On the other hand, in the rotary take-out mechanism 170 in the resin filling means 4, the support block 188 rotates 90 degrees in the direction indicated by the arrow 194 (FIG. 8) in synchronization with the mold 114 arriving at the resin filling and take-out position 158. As a result, the specific gripping member 192 is positioned at the resin filling/unloading position 158 . Such a specific gripping member 19
The arm 190 (or 191) to which the gripper 2 is attached is moved prior to the 90 degree rotation, so that the particular grip 192 is positioned at the protrusion operating position. Therefore,
As shown in FIGS. 8 and 11, the resin filling and removal position 15
At 8, the gripping member 192, which is in the protruding operative position, is in contact with or in close proximity to the mold 114 and partially surrounds the mold 114. Support block 188 of rotary ejection mechanism 170 is then rotated an additional 90 degrees in the direction indicated by arrow 194. The mold 1 was positioned on the lower support block 76 of the closure mechanism 66
14 is moved along the extraction arc portion 208 of the stationary guide rail 206 as the gripping member 192 rotates;
Thus, it is taken out from the closing mechanism 66 of the holding mechanism 67 and transported to the resin filling position 176. Molding mold 1
14 is carried into the resin filling position 176, the lift lever 224 is positioned at the lowered position shown by the two-dot chain line in FIG.
The mold 114 is placed on the support surface 226 of No. 4. At the same time as the mold 114 is placed on the support surface 226 of the lift lever 224, the lift lever 224 is raised to the lift position shown by the solid line in FIG. I am forced to press down. Then, the resin in a softened and molten state begins to be filled from the filling head 214 into the molding cavity 144 of the molding mold 114 through the resin filling hole 148 (FIG. 5) of the molding mold 114. Then,
The arm 190 (or 191) to which the gripping member 192 located at the resin filling position 176 is attached is moved, and the gripping member 192 is retracted to the retracted non-operating position (therefore, the gripping member located on the opposite side 192, that is, the gripping member 192, which is then moved to the resin filling and unloading position 158, is projected to the projecting operating position).

The mold 114 at the resin filling position 176
While being filled with resin, the lifting member 244 moves from the return preparation position 178 (the position shown in FIG. 6) to the resin filling position 17.
6 (position shown in FIG. 7) to the left in FIGS. 6, 7, and 10. At this time, the elevating member 244
is in the lowered position shown in FIG. 6, and its cylindrical member 252 is also in the lowered position shown in FIG. Lifting member 244 in such a state
When moved to the resin filling position 176, the tip of the elevating lever 224 is accommodated in the recess 250 of the elevating member 244. When the elevating member 244 is moved to the resin filling position 176, the cam rail 264 is moved as shown in FIG.
The movable rail member 268 is raised, and therefore the elevating member 244 is raised. In addition, the elevating member 244
The cylindrical member 252 is raised, and the elevating lever 224
is returned to the lowered position. Thus, as shown in FIG. 7, the support surface 226 of the lifting lever 224 is spaced downward from the mold 114, the upper end of the upper part 248 of the lifting member 244 abuts the lower surface of the mold 114, and the upper end of the cylindrical member 252 surrounds the lower end of the mold 114. The lifting member 244, together with the mold 114 present thereon, is then moved along the straight section 210 of the stationary guide rail 206 from the resin filling position 176 (the position shown in FIG. 7) to the return preparation position 178 (
6). Lifting member 244
During such movement, the cam roller 278 (FIG. 9) moves from the raised movable rail member 268 to the stationary rail member 266 on the cam rail 264, thereby lowering the elevating member 244 to the lowered position shown in FIG. It will be done. Then, the elevating member 244 returns to the return preparation position 17.
8, the cylindrical member 252 is lowered and separated from the mold 114, so that the mold 114 can be moved from the lifting member 244. At the time when the lifting member 244 reaches the return preparation position 178, a particular gripping member 204 in the rotary return mechanism 174 is positioned at the return preparation position 178,
The gripping member 204 is protruded to the protruding position. Therefore, the elevating member 244 is moved to the return preparation position 178.
When the gripping member 204 of the rotary return mechanism 174 comes into contact with or comes close to the mold 114, the mold 11
Partially surrounds 4. Then, the rotary return mechanism 174
The support block 200 is rotated 90 degrees in the direction shown by arrow 194 (FIG. 8), and the gripping member 204 partially surrounding the mold 114 is moved along the return arc portion 212 of the stationary guide rail 206 together with the mold 114. and is moved to the resin filling return position 160.

At the same time that the gripping member 204 and the mold 114 are moved to the resin filling return position 160, a specific holding mechanism 67 in the main transport device 2 is moved to the resin filling return position 160. Resin filling return position 1
60, the sliding member 88 of the closing mechanism 66 in the holding mechanism 67 has been raised to the open position, as shown by the solid line in FIG. However,
When reaching the resin filling return position 160 in synchronization with the mold 114, the sliding member 88 is lowered and its closing portion 94 is pressed against the mold 114. Thus, the retention mechanism 6
The mold 114 returned to the mold 7 is restrained by the holding mechanism 67, and the resin filling hole 148 of the mold 114 is closed. After that, the resin filling hole 14 is filled with resin.
The mold 114 in which the mold 8 is closed is conveyed as the rotary support 16 of the main conveyance device 2 rotates. On the other hand, the gripping member 204 in the rotary return mechanism 174 is retracted to the retracted non-operating position, and then moved from the resin filling return position 160 by rotating the support block 200 90 degrees in the direction indicated by arrow 194.

Continuing the explanation with reference to FIG. 1, the mold 114 returned to the main conveyance device 2 is conveyed to the cooling take-out position 162 as the rotary support 16 rotates. Then, at this cooling take-out position 162, the closing mechanism 66 in the holding mechanism 67 together with the mold 114 is taken out from the main transport device 2 to the cooling means 6. The mold 114 filled with resin in a softened and molten state is cooled by the cooling means 6, thus forming a resin molded product, and then returned to the main transport device 2 at the cooling return position 164.

[0026] Referring to FIG. 13 together with FIG. 1, the explanation will be as follows.
The illustrated cooling means 6 includes a cooling water tank 282 and a lying extraction means 28.
4. It is composed of an elevating means 286 and an elevating means 288. The cooling water tank 282 has a rectangular parallelepiped shape with an open top surface, and a cooling medium 290 is circulated within the cooling water tank 282 by an appropriate circulation means (not shown). The cooling medium 290 maintained in the required amount in the cooling water tank 282 may be ordinary water.

The lying take-out means 284 is composed of two pairs of guide rails 292 and 294. Guide rail pair 2
Each of guide rails 92 and 294 consists of two guide rails extending at a predetermined interval, and extends gradually downwardly from the upstream end located at the cooling extraction position 162 to the downstream end located within the cooling water tank 282. ing. At the cooling extraction position 162, the upstream end of each of one pair of guide rails 292 is
Annular guided groove 8 of upper support block 74 of closing mechanism 66
2, and the upstream end of each of the other pair of guide rails 294 is located corresponding to the annular guided groove 108 of the lower support block 76 of the closing mechanism 66 (see also FIG. 2). One guide rail pair 292 descends relatively rapidly from the upstream end toward the upper surface of the cooling water tank 282, and downstream from near the upper surface of the cooling medium 290 accommodated in the cooling water tank 282, the guide rail pair 292 and the pair of guide rails 294 extend parallel to each other at intervals in the horizontal direction. Inside the cooling water tank 282, the pair of guide rails 292 and 294 extend downwardly toward one end of the cooling water tank 282, and further extend downwardly toward the other end of the cooling water tank 282. ing. Continuing the explanation with reference to FIG. 2 together with FIG. 13, the cooling extraction position 1
62 , the upstream ends of each of the guide rail pairs 292 enter into the guided grooves 82 in the upper support block 74 of the closure mechanism 66 , and the upstream ends of each of the guide rail pairs 294 enter the lower support block 76 of the closure mechanism 66 . It enters into the guided groove 108 at. On the other hand, the holding mechanism 6 of the main transport device 2
7, the lower lever 44 is pivoted to the release position shown by the two-dot chain line in FIG. A condition is established in which the closing mechanism 66 can be spaced apart from the rotary support 16. Therefore, the closing mechanism 66 is disengaged from the rotating support 16 along with the mold 114 in which the resin filling hole 148 is closed, and the mold 114 and the closing mechanism 66 are moved to the guide rail pairs 292 and 294 due to their own gravity. I was forced to move as directed. Guide rail pair 292 and 29
4, the mold 114 and the closing mechanism 66 change from an upright state to a horizontally extending recumbent state due to the relatively rapid descent of one of the guide rails 292. be forced to Inside the cooling water tank 282, there are a required number of molds 114 as shown simply by the two-dot chain line in FIG.
and a closing mechanism 66 are made to exist, and the mold 114 taken out at the cooling take-out position 162 and the closing mechanism 66 are the last mold 1 existing in the cooling water tank 282.
14 and the closing mechanism 66 relatively quickly, and is immersed into the cooling water tank 282. Thereafter, each time one mold 114 and closing mechanism 66 are raised by the lifting means 286 from the downstream end of the pair of guide rails 292 and 294, the mold 11 is lifted by one mold.
4 and closure mechanism 66 are moved within cooling water tank 282 along guide rail pair 292 and 294. and,
During this time, the resin filled in the mold 114 is cooled. If desired, the cooling medium 290 may be forced to flow into the inflow channel 128 (FIGS. 4 and 5) opened at the lower end surface of the mold 114 and thus forced to be forced out from the discharge channel 130. A plurality of circulation nozzles (not shown) may be arranged in the cooling water tank 282 at appropriate intervals.

Continuing the explanation with reference to FIG. 13, the elevating means 286 includes lower and upper rotating shafts 296 and 298 that are vertically spaced and rotatably mounted (
The lower and upper rotating shafts 296 and 298 are connected to the cooling water tank 282.
(It is rotatably mounted on the wall via a mounting bracket (not shown) attached to the wall). Sprockets 300 are fixed to both ends of the lower rotating shaft 296, and the upper rotating shaft 29
Sprockets 302 are fixed to both ends of 8. An endless chain 304 is wound around sprockets 300 and 302 on both sides of the lower and upper rotating shafts 296 and 298, respectively. Chain 3
A plurality of elevating pieces 306 are fixed to each of 04 at predetermined intervals in the running direction. Each of the lifting pieces 306 that protrudes outward from the chain 304 has a locking notch 308 formed at its front edge in the running direction. The upper rotating shaft 298 is drivingly connected to a drive source (not shown), which may be an electric motor, through a suitable transmission means (not shown), and the chain 304 is continuously rotated in the direction indicated by arrow 309. Driven. The lower rotating shaft 296 is connected to the cooling water tank 28
2, and the upper rotating shaft 298 is located inside the cooling water tank 2.
It is arranged above 82. Therefore, chain 304
extends from inside the cooling water tank 282 to above it. As can be easily understood by referring to FIG.
Along with the movement of the ascending running section of the chain 304,
06 is raised, the guide rail pair 29
The upper support block 74 (more specifically, the portion immediately below the guided groove 82) and the lower support block 76 (
More specifically, the locking notches 308 of the elevating pieces 306 are engaged with the portions immediately above the guided grooves 108, respectively.
and 294 from the downstream end of mold 114 and closure mechanism 66
is forced to rise. Pairs of guide rails 292 and 29 are used to permit elevation of mold 114 and closure mechanism 66 from the downstream ends of pair of guide rails 292 and 294.
In each of 4, the downstream end of the rail located above is located in front (upstream side) of the downstream end of the rail located below. Two pairs of guide rails 3 extend slightly downwardly in correspondence with the uppermost position of the elevating piece 306.
10 and 312 are arranged, and the mold 114 and the closing mechanism 66 move the elevating piece 306 up to the uppermost position of the elevating piece 306.
and then transferred to the pair of guide rails 310 and 312. Each of the two guide rail pairs 310 and 312 is composed of guide rails that extend parallel to each other at intervals in the vertical direction, and one guide rail pair 310 is guided by the upper support block 74 of the closing mechanism 66. located within the groove 82 and the other guide rail pair 312
is located within the guided groove 108 in the lower support block 76 of the closing mechanism 66.

Continuing the explanation with reference to FIG. 13, the upright/return means 288 includes a rotating upright plate 318 along with two pairs of guide rails 314 and 316. Guide rail pair 3
It is composed of two rails 14 and 316 each extending at a predetermined interval. One guide rail pair 314
extends from the upstream end opposite the downstream end of the guide rail pair 310 to the cooling return position 164. The other guide rail pair 316 is connected to the cooling return position 16 from the upstream end located opposite to the downstream end of the guide rail pair 312.
It extends to 4. As clearly shown in Figure 13,
One pair of guide rails 314 rises and extends relatively rapidly, and in the cooling return position 164, one pair of guide rails 314 is located above the other pair of guide rails 316 by a required distance. The rotating upright plate 318 is fixed to a rotating shaft 320 that extends substantially horizontally. The rotating shaft 320 is drivingly connected to a rotational drive source (not shown) via a suitable transmission means (not shown), and the rotating upright plate 31
8 is intermittently rotated in the direction indicated by arrow 322, for example, every 45 degrees. Locking pin sets 324 are arranged on the surface of the rotating upright plate 318 at predetermined angular (45 degree) intervals. Each of the locking pin sets 324 includes two rear pins 326 disposed at a predetermined interval in the radial direction, and a pin 328 disposed at a distance forward in the rotational direction from the rear pins 326. I'm here. As will be clearly understood by referring to FIG. 1 in conjunction with FIG. 13, guide rail pair 314
and 316 extend substantially horizontally in an arcuate manner, and a rotary transfer means 330 is disposed in association with such downstream ends of the pair of guide rails 314 and 316. This rotary transfer means 330 includes a rotation shaft 332 extending substantially vertically, and transfer plates 334 and 336 are fixed to the rotation shaft 332 at intervals in the vertical direction. A plurality (eight) of push pieces 338 and 340 that protrude outward in the radial direction are arranged on the periphery of each of the transfer plates 334 and 336 at predetermined angular (45 degree) intervals. Rotating shaft 332
is drivingly connected to a rotary drive source (not shown) via suitable transmission means (not shown), and is indicated by arrow 34.
It is rotated continuously in the direction shown by 2. Due to the action of the lifting means 286, the pair of guide rails 310 and 312
The mold 114 and closure mechanism 66 introduced into the guide rail pair 310 and 312 move along the guide rail pair 310 and 312 due to their own weight, and move from the downstream end of the guide rail pair 310 and 312 to the guide rail pair 314 and 316. Enter the upstream end of A guide rail pair 314 is located within the guided groove 82 of the upper support block 74 of the closing mechanism 66, and a guide rail pair 316 is located within the guided groove 108 of the lower support block 76. At this time, the rotating upright plate 318 is in a stopped state, and the mold 114 and the closing mechanism 66 are moved to the upright return means 288.
When introduced into the upstream end of the pair of guide rails 314 and 316, the base plate 68 of the closing mechanism 66 is locked to the locking pin set 324 of the rotating upright plate 318 which is in a stopped state. In other words, the two rear pins 326 lock on the rear side (bottom side) of the board 68, and the front pins 328 lock on the front side (top side) of the board 68.
to be locked. Next, when the rotating upright plate 318 is rotated intermittently, the mold 114 and the closing mechanism 66 are moved along the pair of guide rails 314 and 316, and are gradually raised from the lying position. When the rotary upright plate 318 is rotated 90 degrees (thus performing two intermittent rotations of 45 degrees), the mold 114 and the closure mechanism 66 are raised to a substantially vertically extending position, and the guide rail 314 and 316 to a substantially horizontally arcuate downstream end thereof. Guide rail pair 314 and 31
6 to the arcuate downstream end of the mold 114 and the closing mechanism 66.
is moved, the pushing pieces 338 and 340 of the transfer plates 334 and 336, which are continuously rotated in the direction shown by the arrow 342 in the rotary transfer mechanism 330, begin to act, and the mold 114 and the closing mechanism 66 are further moved. It is moved along the arcuate downstream ends of the pair of guide rails 314 and 316. Thus, mold 114 and closure mechanism 66
is the substrate 6 of the closure mechanism 66 at the cooling return position 164.
8 is returned to the rotary support 16 of the main transport mechanism 2 with the paper 8 facing inward in the radial direction. Referring also to FIG. 2, at this point, the lower lever 44 is located in the release position shown by the two-dot chain line in FIG. The stopper piece 70 is positioned above the tip of the lower lever 44. On the other hand, the lower locking piece 72 fixed to the rear surface of the base plate 68 of the closing mechanism 66 is connected to the annular member 72 fixed to the rotation support 16.
8 is inserted into the recess 34 formed at 8. When the mold 114 and the closing mechanism 66 are returned to the rotary support 16 in this manner, the lower lever 44 is rotated to the locking position shown in solid lines in FIG. The closing mechanism 66 and the mold 114 closed by the closing mechanism 66 are thus held on the rotating support 16.

Referring again to FIG. 1, the mold 114 returned to the main conveyance device 2 is conveyed to the product discharge and take-out position 166 as the rotary support 16 rotates. At this product discharge and take-out position 166, the mold 11
4 is taken out to the product discharge means 8. The product discharge means 8 opens the mold 114 to discharge the molded product, then closes the mold 114 again and returns the mold 114 to the main transport device 2 at the product discharge return position 168 .

Continuing the explanation with reference to FIGS. 4 and 5 in conjunction with FIG. 1, the illustrated product discharge means 8 includes a rotary support 346 that is continuously rotated in the direction indicated by arrow 344 and a rotary support 346 that A plurality of mold opening/closing mechanisms 348 are provided at intervals in the circumferential direction. At the product discharge/take-out position 166, the mold 114 is taken out from the holding mechanism 67 of the main transport device 2 by an appropriate take-out means and transferred to the mold opening/closing mechanism 348. While the mold opening/closing mechanism 348 is being rotated in the direction shown by the arrow 344 to the product discharge return position 168 in conjunction with the rotation of the rotary support 346, the following operations are performed. First, the male mold 116 is moved downward relative to the two female molds 118 and removed from the molded product. A removal mandrel (not shown) is then inserted from below into the molded product present in the female mold 118. Thereafter, the two female molds 118 are separated from each other and removed from the molded product. The molded product remaining on the take-out mandrel is then carried out to an appropriate location. Then,
The two female molds 118 are assembled together and closed, and the male mold 116 is inserted from below and the mold 114 is closed again. When opening and closing the mold 114 in the above-described procedure, the locking arm (not shown) of the mold opening/closing mechanism 348 locks into the locking recess 150 formed on the outer surface of the female mold 118.
and 152, and a locking pin (not shown) of the mold opening/closing mechanism 348 is formed in the outer surface of the female mold 118 (see FIG. 3).
It is locked in place. At the product discharge return position 168, the mold 114 is returned from the mold opening/closing mechanism 348 of the product discharge means 8 to the holding mechanism 67 of the main transport device 2 by an appropriate return means. Therefore, the structure of the product ejecting means 8 and the ejecting means and return means attached thereto do not constitute new features in the manufacturing apparatus constructed according to the present invention, but may be constructed from well-known mechanisms. Therefore, their details are omitted in this specification.

The preferred embodiment of the manufacturing apparatus constructed according to the present invention has been described in detail with reference to the accompanying drawings.
It goes without saying that the present invention is not limited to such embodiments, and that various modifications and changes can be made without departing from the present invention.

For example, in the illustrated embodiment, the main transport device 2 comprises a rotary support 16, which
A plurality of holding mechanisms 67 are disposed around the periphery of the rotary support 16, but instead of the rotating support 16, a belt or chain mechanism that is rotationally driven through a suitable endless path is disposed, and the belt or chain mechanism has the necessary functions. It is also possible to arrange a plurality of holding mechanisms at intervals.

Furthermore, in the illustrated embodiment, the product discharging means 8 and the resin filling means 4 are provided separately for the main conveying device 2, and the mold 11 is disposed in the product discharging means 8.
After taking out the molded product from the resin filling means 4, the mold 114 is once returned to the main conveyance device 2, and then taken out from the main conveyance device 2 to the resin filling means 4. It is also possible to transfer the mold to the resin filling means without returning the mold to the main conveyance device after taking out the product, fill the mold with resin in the resin filling means, and then return it to the main conveyance device.

[0035]

[Effects of the Invention] In the synthetic resin product manufacturing apparatus of the present invention, the effective utilization time of a specific process (for example, a cooling process) can be increased or decreased as necessary without reducing the overall efficiency. Even if the time required for each process changes due to changes in the dimensions or shape of the product or the resin material, such changes can be easily and inexpensively handled without requiring major design changes to the entire device. be able to.

[Brief explanation of the drawing]

FIG. 1 is a simplified plan view showing the entire synthetic resin product manufacturing apparatus constructed according to the present invention.

FIG. 2 is a partial cross-sectional view showing a part of the main conveyance device in the apparatus of FIG. 1 together with a mold.

FIG. 3 is a partial perspective view showing the holding mechanism of the main conveyance device in the apparatus of FIG. 1 together with a mold.

FIG. 4 is an exploded perspective view showing a mold in the apparatus of FIG. 1;

FIG. 5 is a sectional view showing a mold in the apparatus of FIG. 1.

6 is a partial sectional view showing a resin filling means in the apparatus of FIG. 1. FIG.

7 is a partial cross-sectional view showing the resin filling means in the apparatus of FIG. 1 in a state different from that of FIG. 6;

FIG. 8 is a partial plan view showing resin filling means in the apparatus of FIG. 1;

9 is a partial side view showing a resin filling means in the apparatus of FIG. 1. FIG.

FIG. 10 is a partial plan view showing a part of the resin filling means in the apparatus of FIG. 1;

11 is a partial cross-sectional view showing the relationship between the main conveyance device and the resin filling means in the apparatus of FIG. 1 at a resin filling and unloading position.

FIG. 12 is a partial sectional view showing the relationship between the main conveyance device and the resin filling means in the apparatus of FIG. 1 at the resin filling return position.

13 is a partial perspective view showing cooling means in the apparatus of FIG. 1. FIG.

[Explanation of symbols]

2: Main transport device 4: Resin filling means 6: Cooling means 8: Product discharge means 16: Rotation support of main transport device 66: Closing mechanism 67: Holding mechanism 114: Molding mold 116: Male mold 118: Female mold 158: Resin filling and extraction position 160: Resin filling and return position 162: Cooling and extraction position 164: Cooling and return position 166: Product discharge and extraction position 168: Product discharge and return position 170: Rotary extraction mechanism of resin filling means 172: Linear transfer of resin filling means Mechanism 174: Rotary return mechanism for resin filling means 176: Resin filling position 178: Return preparation position 282: Cooling water tank for cooling means 284: Lying removal means for cooling means 286: Lifting means for cooling means 288: Returning to standing position for cooling means means

Claims (13)

[Claims] 1. A main conveyance device including a plurality of molds and a plurality of mold holding mechanisms that are moved through an endless conveyance path and releasably hold each of the molds; The mold is received from the mold holding mechanism at the resin filling and unloading position, the mold is filled with synthetic resin in a softened and molten state, and the resin filling and returning position is located downstream of the resin filling and unloading position in the endless conveyance path. A synthetic resin product manufacturing apparatus comprising: resin filling means for returning the mold to the mold holding mechanism at a step. 2. The resin filling means includes an intermittent moving mechanism that intermittently moves the mold from the resin filling and take-out position to the resin filling and returning position via the resin filling position; 2. The synthetic resin product manufacturing apparatus according to claim 1, further comprising a resin filling mechanism for filling the mold with a resin material in a softened and molten state. 3. The mold is received from the mold holding mechanism at a cooling take-out position downstream of the resin filling and returning position in the endless transport path, the mold is moved through a cooling medium, and the endless transport is carried out. 3. The synthetic resin product manufacturing apparatus according to claim 1, further comprising cooling means for returning the mold to the mold holding mechanism at a cooling return position downstream of the cooling take-out position in the path. 4. Each of the molds has a resin-filled hole,
Each of the mold holding mechanisms is provided with a removable closing mechanism having a closing part that closes the resin filling hole, and the cooling means closes the resin filling hole of the mold together with the mold. The closing mechanism is received from the mold holding mechanism at the cooling take-out position, and the closing mechanism that has closed the resin filling hole of the mold is returned to the mold holding mechanism together with the mold at the cooling return position. The synthetic resin product manufacturing apparatus according to claim 3. 5. The synthetic resin product manufacturing apparatus according to claim 3, wherein the cooling means moves the mold through a cooling water tank. 6. The cooling means includes guide means extending through the cooling water bath, and the mold is caused to move along the guide means due to its own weight.
The synthetic resin product manufacturing equipment described. 7. Receive the mold from the mold holding mechanism at a product discharge/take-out position downstream of the cooling return position in the endless conveyance path, and discharge the product from the mold;
7. The method according to any one of claims 3 to 6, further comprising a product discharge means for returning the mold to the mold holding mechanism at a product discharge return position downstream of the product discharge and take-out position in the endless conveyance path. Synthetic resin product manufacturing equipment. 8. A main conveyance device including a plurality of molds, a plurality of mold holding mechanisms that are moved through an endless conveyance path and releasably hold each of the molds; a resin filling means for filling synthetic resin in a molten state; and a resin filling means for receiving the mold filled with the synthetic resin in a softened molten state from the mold holding mechanism at a cooling take-out position in the endless conveyance path, and a cooling medium; Cooling means for moving the mold through the inside and returning the mold to the mold holding mechanism at a cooling return position downstream of the cooling take-out position in the endless conveyance path. Synthetic resin product manufacturing equipment. 9. Each of the molds has a resin-filled hole,
Each of the mold holding mechanisms is provided with a removable closing mechanism having a closing part that closes the resin filling hole, and the cooling means closes the resin filling hole of the mold together with the mold. The closing mechanism is received from the mold holding mechanism at the cooling take-out position, and the closing mechanism that has closed the resin filling hole of the mold is returned to the mold holding mechanism together with the mold at the cooling return position. The synthetic resin product molding apparatus according to claim 8. 10. The synthetic resin product manufacturing apparatus according to claim 8, wherein the cooling means moves the mold through a cooling water tank. 11. The cooling means includes guide means extending through the cooling water bath, and the mold is caused to move along the guide means due to its own weight. synthetic resin product manufacturing equipment. 12. Receive the mold from the mold holding mechanism at a product discharge and take-out position downstream of the cooling return position in the endless conveyance path, discharge the product from the mold, and receive the product at the product discharge and take-out position. Claims 8 to 1, wherein the mold is returned to the mold holding mechanism at a product discharge return position downstream from the mold.
1. The synthetic resin product manufacturing apparatus according to any one of items 1 to 1 above. 13. A main conveyance device including a plurality of molds and a plurality of mold holding mechanisms that are moved through an endless conveyance path and releasably hold each of the molds;
a resin filling means for filling the mold with synthetic resin in a softened and molten state; a cooling means for cooling the mold filled with the synthetic resin; Receive the mold from the mold holding mechanism, discharge the product from the mold, and transfer the mold to the mold holding mechanism at a product discharge return position downstream of the product discharge and take-out position in the endless conveyance path. A synthetic resin product manufacturing device equipped with means for taking out products to be returned.