JP2022067397A - Molding system - Google Patents

Abstract

To provide a molding system and a mold capable of suppressing flashes.SOLUTION: A molding system is provided with: a mold 10 having a stationary mold 20 and a movable mold 40 that can move with respect to the stationary mold 20, and having a primary cavity 301 and a secondary cavity 302 which are formed between the stationary mold 20 and the movable mold 40, and into which a resin is injected, in a state in which the stationary mold 20 and the movable mold 40 are mold-clamped; and a takeout device for taking out a resin molded article 200 from the mold 10. In the molding system, the takeout device is provided with: a chuck part 81 for grasping the resin molded article 200; and a carrying mechanism 82 for moving the chuck part 81 from between the stationary mold 20 and the movable mold 40 in a state in which the stationary mold 20 and the movable mold 40 are separated, and allowing the chuck part 81 to grasp the resin molded article 200 to takeout the resin molded article 200 from the mold 10. In the mold 10, when the molds are clamped, a plurality of plates are laminated without a gap in a portion that overlaps with the cavity in an X-axis direction.SELECTED DRAWING: Figure 6

Description

The present invention relates to a molding system equipped with a mold for molding a resin and an extraction device for taking out a resin molded product from the mold, and a mold.

Conventionally, in an injection molding machine, when a solidified resin molded product is taken out from a mold, the resin molded product is taken out from the mold by opening the mold and then extruding it with an ejector pin (for example, Patent Document 1). ).

Japanese Unexamined Patent Publication No. 2011-224888

By the way, when the resin molded product is extruded by the ejector pin, the accommodating hole for accommodating the ejector pin slidably in a predetermined direction and the ejector stroke for moving the ejector plate to which the ejector pin is fixed are moved in the mold. It was necessary to secure. Further, in order to push up the ejector plate, a hole through which the protrusion rod passes may be provided.

However, depending on the specifications of the resin molded product and the type of resin used, it may be necessary to inject the molten resin at ultra-high pressure. The presence of cavities could cause the mold to be momentarily distorted by the injection pressure. Then, when the mold is distorted, there is a problem that the resin flows in and burrs occur even for a moment. If the mold is made thicker, it is possible to suppress the distortion of the mold, but in that case, there is a problem that the mold becomes large and costly.

The present invention has been made in view of the above circumstances, and a main object thereof is to provide a molding system and a mold capable of eliminating distortion of the mold due to injection pressure and suppressing burrs.

The first means for solving the above-mentioned problems includes a fixed type and a movable type that is movable with respect to the fixed type, and the fixed type and the movable type are fixed in a molded state. In a molding system including a mold in which resin is injected into a cavity formed between a mold and the movable mold, and a take-out device for taking out a resin molded product from the mold, the take-out device is the above-mentioned. A grip portion that grips a resin molded product, a first transport portion that moves the grip portion between the fixed mold and the movable mold while the fixed mold and the movable mold are separated from each other, and the first transport portion. A second transport unit that moves the grip portion arranged between the fixed mold and the movable mold by the transport unit toward the resin molded product, and a second transport unit that moves the grip portion toward the resin molded product. The grip portion is provided with a drive portion that drives the grip portion so as to grip the resin molded product, and the mold is laminated with a plurality of plates in the X-axis direction, which is the movable direction thereof. In the mold, the plurality of plates are laminated without a gap at a portion that overlaps the cavity in the X-axis direction when the mold is compacted.

According to the above configuration, a plurality of plates are laminated without gaps in the portion of the mold that overlaps with the cavity in the X-axis direction when the mold is compacted. This makes it possible to eliminate unnecessary gaps, increase the rigidity of the mold, and suppress distortion. Therefore, it is possible to prevent burrs from being generated in the resin molded product.

In addition, the take-out device takes out the resin molded product from the mold. As a result, in a mold in which molten resin must be injected at ultra-high pressure, the resin molded product can be taken out from the mold even if the mold itself does not have an ejector mechanism, and the resin molded product remains in the mold. Can be prevented. That is, even if a plurality of plates are laminated without gaps without providing a cavity for accommodating the ejector pin or a cavity for moving the ejector pin in the mold itself, the resin molded product is appropriately taken out from the mold. Can be done. In addition, it is possible to prevent the resin molded product from falling from the mold.

The second means has a fixed type and a movable type that is movable with respect to the fixed type, and the fixed type and the movable type are combined with the fixed type and the movable type in a molded state. There are two types of molds used in a molding system equipped with a mold in which resin is injected into a cavity formed between the molds and a take-out device for taking out a resin molded product from the mold. This is for performing two-color molding in which the resins of the above are sequentially injected, and the resin on the secondary side is injected into the mold in the Y-axis direction orthogonal to the movable X-axis direction of the movable mold. The primary side cavity into which the resin on the primary side is injected is configured to be formed on both sides of the secondary side cavity to be formed, and the mold is configured by laminating a plurality of plates in the X-axis direction. The plurality of plates include a slide plate that is configured to be reciprocally movable in the Y-axis direction and that moves the primary molded product molded in the primary cavity to the secondary cavity. The slide plate has a length that can cover from one primary cavity to the secondary cavity in the Y-axis direction, and extends from the other primary cavity to the secondary cavity. In the mold having a length that can be covered, the plurality of plates are laminated without a gap at a portion of the mold that overlaps the cavity in the X-axis direction when the mold is compacted.

According to the above configuration, in the mold, in the portion overlapping with the cavity in the X-axis direction when the mold is fastened, a plurality of plates are laminated without gaps, so that the rigidity of the mold is increased and distortion is suppressed. It becomes possible to do. Therefore, it is possible to prevent burrs from being generated in the resin molded product.

Further, since the primary molded product is moved to the secondary side cavity by the slide plate, the taking-out position of the resin molded product can be fixed and the taking-out work can be easily performed. Further, the slide plate has a length capable of covering from one primary cavity to the secondary cavity in the Y-axis direction, and covers the other primary cavity to the secondary cavity. It has a length that allows it to move back and forth in the Y-axis direction. Therefore, when the primary molded product is moved from one primary cavity to the secondary cavity by the slide plate, the slide plate is in a position where the primary molded product can be received from the other primary cavity. It will be placed. Therefore, it is possible to mold the primary molded product and the secondary molded product at the same time, and it is possible to improve the work efficiency.

A block diagram showing the configuration of a molding system. Sectional drawing of resin molded product. Vertical sectional view of the mold in the initial state. FIG. 6 is a sectional view taken along line I-I of the mold in the initial state. Section II-II sectional view of the mold in the initial state. A vertical cross-sectional view of the mold after the third step. FIG. 3 is a cross-sectional view taken along the line III-III of the mold after the third step. FIG. 6 is a sectional view taken along line IV-IV of the mold after the third step. The vertical sectional view of the mold when the 5th process has passed. A vertical sectional view of a mold after the sixth step. FIG. 6 is a sectional view taken along line VV of the mold after the sixth step. FIG. 6 is a sectional view taken along line VI-VI of the mold after the sixth step. The vertical sectional view of the mold when the 8th process has passed. The vertical sectional view of the mold when the 9th process has passed. The vertical sectional view of the mold when the twelfth step has passed. FIG. 6 is a sectional view taken along line VII-VII of the mold after the twelfth step. FIG. 6 is a sectional view taken along line VIII-VIII of the mold after the twelfth step. The vertical sectional view of the mold when the 14th step has passed. The vertical sectional view of the mold when the fifteenth step has passed. IX-IX line sectional view of the mold when the fifteenth step has passed. XX-ray cross-sectional view of the mold after the fifteenth step. The vertical sectional view of the mold when the 17th step has passed. Top view showing the release bar. Top view showing a slide plate. Top view showing a slide plate. A flowchart showing the flow of the molding process.

Hereinafter, embodiments embodying the "molding system" and the "mold" according to the present invention will be described with reference to the drawings. In each of the following embodiments, the parts that are the same or equal to each other are designated by the same reference numerals, and the description thereof will be used for the parts having the same reference numerals. Further, in the description of each embodiment and the modified example, not only the combination of the configurations specified clearly but also each embodiment and the modified example can be combined as long as the combination does not cause any trouble.

As shown in FIG. 1, the molding system 100 includes a mold 10 and an extraction device 11. Further, the molding system 100 includes an injection molding machine 12. The injection molding machine 12 includes an injection unit 13 that melts a resin and injects it at a high pressure, a mold clamping unit 14 that performs mold clamping (and mold opening) of a mold 10, a control device 15 that controls these, and the like. Since the injection molding machine 12 has a well-known configuration, the description thereof will be omitted. The take-out device 11 and the injection molding machine 12 may be integrated.

As shown in FIG. 3, the mold 10 is for performing two-color molding in which two types of resins are sequentially injected, and is divided by a parting line PL with respect to the fixed mold 20 and the fixed mold 20. It has a movable type 40 that can be moved. In this embodiment, the movable direction of the movable type is referred to as the X-axis direction, the direction orthogonal to the X-axis is referred to as the Y-axis direction, and the directions orthogonal to the X-axis and the Y-axis are referred to as the Z-axis direction.

In the present embodiment, the resin molded product (finished product) 200 molded by the mold 10 has a cylindrical tubular portion 210 and a flange portion attached to the outer peripheral surface of the tubular portion 210, as shown in FIG. It is a two-color composite product composed of 220. A plurality of undercut shapes 211 to 214 protruding from the outer peripheral surface are formed on the outer peripheral surface of the tubular portion 210. The flange portion 220 is provided with a flange-shaped flange portion 222 that protrudes in the outer peripheral direction with respect to the cylindrical base portion 221. A plurality of undercut shapes 223 to 224 protruding from the outer peripheral surface are formed on the outer peripheral surface of the base portion 221. The flange portion 222 is provided near the opening of the base portion 221. An annular convex portion 225 is formed on the side surface of the flange portion 222.

The flange portion 220 is fixed so as to be integrated with the outer peripheral surface of the tubular portion 210 between the undercut shapes 213 and 214 of the tubular portion 210. In the present embodiment, the flange portion 220 is a primary molded product, and the tubular portion 210 is a secondary molded product. That is, after the flange portion 220 is molded, the tubular portion 210 is molded inside the flange portion 220 so as to be integrated with the collar portion 220.

Here, the resin on the primary side is polyethylene or the like, and the resin on the secondary side is nylon (polyamide) or the like. The resin on the primary side melts at a lower temperature than the resin on the secondary side. That is, the primary molded product is melted and integrated by pouring a high-temperature secondary resin into the inside of the primary molded product.

As shown in FIG. 3, the fixed mold 20 is configured by stacking a plurality of plates in the X-axis direction. Specifically, the fixed mold 20 includes a fixed side mounting portion 21, a fixed side intermediate plate 22, and a fixed side mold plate 23. The fixed side mounting portion 21 is a member to be mounted on the injection molding machine 12. The fixed-side template 23 is a plate having a parting surface 20p and configured to be in contact with the parting surface 40p of the movable mold 40. The fixed-side intermediate plate 22 is a plate arranged between the fixed-side mounting portion 21 and the fixed-side template 23. In FIG. 3, the parting line PL is illustrated by a alternate long and short dash line.

The fixed-side mounting portion 21 is provided with sprue bushes 24a to 24c that come into contact with the nozzle of the injection unit 13 and eject resin from the injection unit 13. The sprue bushes 24a to 24c are provided with primary side sprue bushes 24a and 24b into which the resin on the primary side is injected, and secondary side sprue bushes 24c in which the resin on the secondary side is injected. A plurality (two in this embodiment) of the primary side sprue bushes 24a and 24b are provided. The two primary side sprue bushes 24a and 24b and the one secondary side sprue bush 24c are arranged so as to be aligned in the Y-axis direction. Although they are arranged in a row along the Y-axis direction in FIG. 3, they may be displaced in the Z-axis direction. Further, in FIG. 3, the left primary side sprue bush may be referred to as a primary side sprue bush 24a, and the right primary side sprue bush may be referred to as a primary side sprue bush 24b.

The sprue bushes 24a to 24c are hot sprue bushes having a resin temperature adjusting function. In each of the sprue bushes 24a to 24c, resin passages 25a to 25c through which the resin flows are formed elongated along the X-axis direction. One end of the resin passages 25a to 25c opens to the injection unit 13 side to serve as a resin inflow port, and the other end opens to the fixed side intermediate plate 22 side to serve as a resin outflow port.

As shown in FIG. 6, the fixed side mounting portion 21 is configured by laminating a plurality of plates, and among the plurality of plates, the runner stripper plate 21a closest to the fixed side intermediate plate 22 is a fixed side mounting plate or the like. It is configured to be separable in the X-axis direction from the other plates 21b. In the present embodiment, in the mold 10 of FIG. 6 and later, hatching may be omitted.

As shown in FIGS. 3 and 6, the fixed-side intermediate plate 22 is configured to be separable from the fixed-side mounting portion 21 in the X-axis direction. The fixed-side intermediate plate 22 is formed with runners 26a and 26b through which the primary resin flowing out of the primary sprue bushes 24a and 24b passes, and primary resin passages 27a and 27b through which the primary resin flows. Has been done.

The runners 26a and 26b are provided by closing the recess formed on the facing surface of the fixed-side intermediate plate 22 on the fixed-side mounting portion 21 side by the fixed-side mounting portion 21. The runners 26a and 26b are arranged so as to correspond to the outlets of the resin passages 25a and 25b of the primary side sprue bushes 24a and 24b, and the primary side resin flowing out from the primary side sprue bushes 24a and 24b flows in. ..

One ends (inflow ports) of the primary resin passages 27a and 27b are formed at the bottoms of the runners 26a and 26b, respectively. The primary resin passages 27a and 27b are elongated along the X-axis direction, and the other end (outlet) is open on the surface on the fixed side template 23 side. That is, each of the primary side resin passages 27a and 27b is provided on the fixed side template 23 side with the primary side resin flowing out from the primary side sprue bushes 24a and 24b flowing in through the runners 26a and 26b. It is configured to flow out from the outlet.

Further, the fixed-side intermediate plate 22 is formed with a runner 26c through which the secondary resin flowing out from the secondary-side sprue bush 24c passes between the runners 26a and 26b in the Y-axis direction.

The runner 26c is provided by closing the recess formed on the facing surface of the fixed-side intermediate plate 22 on the fixed-side mounting portion 21 side by the fixed-side mounting portion 21. The runner 26c is arranged so as to correspond to the outlet of the resin passage 25c of the secondary side sprue bush 24c, and the secondary side resin flowing out from the secondary side sprue bush 24c flows in.

At the bottom of the runner 26c, one end (inflow port) of the two secondary resin passages 27c and 27d is formed. The secondary side resin passages 27c and 27d are passages through which the secondary side resin flows, and the secondary side resin passages 27c and 27d are elongated along the X-axis direction and are formed on the surface on the fixed side template 23 side. The other end (outlet) is open. That is, in each of the secondary side resin passages 27c and 27d, the secondary side resin flowing out from the secondary side sprue bush 24c flows in through the runner 26c and flows out from the outlet provided on the fixed side template 23 side. It is configured to do. In FIG. 3, the left secondary resin passage may be referred to as a secondary resin passage 27c, and the right secondary resin passage may be referred to as a secondary resin passage 27d.

The primary side resin passages 27a and 27b and the secondary side resin passages 27c and 27d described above are provided so as to be displaced in the Y-axis direction. In the Y-axis direction, the separation distance between the primary side resin passage 27a and the secondary side resin passage 27c (the separation distance on the left side) is the separation distance between the secondary side resin passage 27d and the primary side resin passage 27b (on the right side). It is set to be the same as the separation distance).

Further, as shown in FIG. 5, the fixed-side intermediate plate 22 is provided with a pair of fixed-side wedge portions 28 protruding toward the fixed-side template 23. The pair of fixed side wedge portions 28 shown in FIG. 5 are arranged to face each other so as to sandwich the runner 26c and the secondary side resin passage 27d in the Z-axis direction. The fixed side wedge portion 28 has an inclined surface 28a formed inward in the Z-axis direction, and is formed so that the width in the Z-axis direction becomes shorter toward the tip (movable type side) in the X-axis direction. A hozo having a T-shaped cross section is formed on the inclined surface 28a. In other words, guide grooves 28b having an inclination angle similar to that of the inclined surface 28a are formed along the inclined surface 28a on both side surfaces of the fixed side wedge portion 28 in the Y-axis direction.

Further, although not shown, a plurality of pair of fixed side wedge portions 28 are provided so as to be separated from each other in the Y-axis direction. The pair of fixed side wedge portions 28 (not shown) have the same configuration as that of FIG. 5, and are arranged so as to sandwich the secondary side resin passage 27c and the secondary side resin passage 27c in the Z-axis direction. .. Since the fixed side wedge portion 28 sandwiching the secondary side resin passage 27c has the same configuration as that of FIG. 5, the description thereof will be omitted.

The fixed side template 23 will be described. As shown in FIGS. 3 and 6, the fixed-side template 23 is configured to be separable from the fixed-side intermediate plate 22 in the X-axis direction. The fixed-side template 23 is formed with primary-side resin passages 29a and 29b so as to communicate with the primary-side resin passages 27a and 27b of the fixed-side intermediate plate 22. The primary side resin passages 29a and 29b are formed linearly along the X-axis direction, and an outlet is formed on the parting surface 20p of the fixed side template 23. A constricted portion is formed in the middle of the primary side resin passages 29a and 29b in order to facilitate cutting of the solidified resin in the primary side resin passages 29a and 29b.

As shown in FIGS. 3 and 6, the parting surface 20p of the fixed side template 23 is formed with primary side convex surfaces 30a and 30b as primary side uneven portions for forming the primary side cavity 301. ing. The primary side convex surface 30a is formed in pairs symmetrically with respect to the primary side resin passage 29a in the Y-axis direction. Similarly, the primary side convex surface 30b is also formed in pairs symmetrically with respect to the primary side resin passage 29b in the Y-axis direction.

Further, the fixed side template 23 is formed with secondary side resin passages 29c and 29d so as to communicate with the secondary side resin passages 27c and 27d of the fixed side intermediate plate 22. The secondary resin passages 29c and 29d are formed linearly along the X-axis direction up to the middle of the fixed-side template 23 in the X-axis direction.

More specifically, by fitting the nesting 31c, 31d in which the secondary side resin passages 29c, 29d are formed into the insertion holes 33 provided in the fixed side template 23, the secondary side resin is fitted into the fixed side template 23. The passages 29c and 29d are formed.

As shown in FIGS. 3 and 6, in the X-axis direction, the movable side end faces of the nests 31c and 31d are formed with an uneven surface for forming the secondary side cavity 302. Further, the fixed-side template 23 is provided with a storage space 34 that opens on the side of the movable mold 40 in the X-axis direction. The bottom of the storage space 34 communicates with the insertion hole 33, and a part of the nests 31c and 31d inserted into the insertion hole 33 protrudes from the bottom of the storage space 34.

Then, as shown in FIG. 5, the accommodation space 34 of the fixed side template 23 has a pair of fixed sides so as to surround a part of the nests 31c and 31d protruding from the bottom of the accommodation space 34 in the Z-axis direction. Split units 32c and 32d are provided. Although only the fixed side split type unit 32d is shown in FIG. 5, the same applies to the fixed side split type unit 32c.

The fixed side split type units 32c and 32d are divided in the Z-axis direction, and are housed in the storage space 34 so as to be separated and close to each other in the Z-axis direction. When the fixed side split type units 32c and 32d are close to each other, a cavity is formed inside. Specifically, the inner peripheral surfaces 35 of the fixed side split type units 32c and 32d are formed with uneven portions for forming the secondary side cavity 302 when they are close to each other.

Further, in the Z-axis direction, the outer surface 36 of the fixed side split type units 32c and 32d is inclined with respect to the X-axis direction. The outer surface 36 is formed so that the movable side portions of the fixed side split type units 32c and 32d are wider in the X-axis direction than the non-movable side portions.

Further, the outer surface 36 is formed so as to correspond to the inclined surface 28a of the fixed side wedge portion 28, and has a dovetail groove having a T-shaped cross section so that the hozo of the fixed side wedge portion 28 fits. It is formed. In other words, a groove having a guide protruding inward in the Y-axis direction is formed at the opening so as to fit into the guide groove 28b. As a result, as long as the dovetail groove and the hozo are fitted, the fixed side split type units 32c and 32d move relative to the fixed side wedge portion 28 along the inclined direction of the inclined surface 28a. It has become.

Therefore, as shown in FIG. 8, when the fixed-side intermediate plate 22 is separated from the fixed-side template 23 in the X-axis direction, the fixed-side wedge portion 28 moves in the X-axis direction, so that the fixed-side split type unit 32c , 32d are spaced apart in the Z-axis direction. On the other hand, when the fixed-side intermediate plate 22 and the fixed-side template 23 are close to each other, as shown in FIG. 5, the fixed-side split mold units 32c and 32d are close to each other due to the movement of the fixed-side wedge portion 28 in the X-axis direction. It has become like.

Further, as shown in FIGS. 5, 6 and 8, the end surface 37 on the side of the movable mold 40 in the X-axis direction of the fixed side split type units 32c and 32d has irregularities for forming the secondary side cavity 302. The part is formed. In this embodiment, the inner peripheral surface 35 and the end surface 37 of the fixed side split type units 32c and 32d, and the movable type side end surface of the nested 31c and 31d form the secondary side uneven portion.

The primary side convex surfaces 30a and 30b and the fixed side split type units 32c and 32d are arranged in a row at predetermined intervals in the Y-axis direction. Specifically, as shown in FIG. 6, the interval L11 in the pair of primary side convex surfaces 30a, the interval L12 in the pair of primary side convex surfaces 30b, and the interval L13 in the fixed side split type units 32c and 32d are the same. It is set to be. Further, the distance L14 between the primary side convex surface 30a and the fixed side split type unit 32c and the distance L15 between the primary side convex surface 30b and the fixed side split type unit 32d are set to be the same.

Next, the movable type 40 will be described. As shown in FIG. 3, the movable type 40 is configured by stacking a plurality of plates in the X-axis direction. The movable mold 40 includes a movable side template 41, a movable side intermediate plate 42, and a movable side mounting portion 43. The movable side template 41 is a plate having a parting surface 40p and abutting against the parting surface 20p of the fixed mold 20. The movable side mounting portion 43 is composed of a plurality of plates such as a plate mounted on the injection molding machine 12 so as to be movable with respect to the fixed mold 20. The movable side intermediate plate 42 is a plate arranged between the movable side mounting portion 43 and the movable side template 41.

The movable side mounting portion 43 is formed with the secondary side center cores 44c and 44d having a substantially cylindrical shape. The secondary side center cores 44c and 44d are erected so as to extend in the X-axis direction. Further, the secondary side center cores 44c and 44d are arranged so as to correspond to the positions of the fixed side split type units 32c and 32d. Therefore, they are arranged so as to be separated by a predetermined distance in the Y-axis direction, and the distance L23 in the Y-axis direction of the pair of secondary side center cores 44c and 44d is the same as the distance L13 between the fixed side split type units 32c and 32d. It is set to be.

In the mold-fastened state, the tips of the secondary center cores 44c and 44d are inside the fixed-side split type units 32c and 32d of the fixed-side template 23, that is, the cavities surrounded by the fixed-side split type units 32c and 32d. Its length is set so that it protrudes inward. Further, the radii of the secondary side center cores 44c and 44d are formed to have the same dimensions as the inner diameter radius of the cylindrical portion 210 which is a secondary molded product. That is, the secondary side center cores 44c and 44d are for forming the secondary side cavity 302.

The movable side intermediate plate 42 is configured to be separable from the movable side mounting portion 43 in the X-axis direction. A through hole 45 through which the secondary side center cores 44c and 44d are inserted is formed in the movable side intermediate plate 42 along the X-axis direction. The through hole 45 is provided so as to correspond to the position of the secondary side center cores 44c and 44d in the Z-axis direction and the Y-axis direction. Further, the diameter of the through hole 45 is larger than the diameter of the secondary side center cores 44c and 44d so that the secondary side center cores 44c and 44d can move relative to the movable side mounting portion 43 in the X-axis direction. It is formed slightly larger.

Further, on the movable side intermediate plate 42, a pair of cylindrical portions 46c and 46d are formed in the vicinity of the center thereof in the Y-axis direction. The cylindrical portions 46c and 46d are formed along the X-axis direction. Specifically, the lengths of the cylindrical portions 46c and 46d are set so that the tips thereof protrude inside the movable side template 41 in the mold clamping state.

Further, the cylindrical portions 46c and 46d are provided so as to correspond to the positions of the secondary side center cores 44c and 44d in the Z-axis direction and the Y-axis direction. That is, the cylindrical portions 46c and 46d are fixed so as to correspond to the through holes 45, respectively. Further, the inner diameters of the cylindrical portions 46c and 46d are formed to be the same as the diameters of the secondary side center cores 44c and 44d so that the secondary side center cores 44c and 44d can move relative to each other in the X-axis direction. Further, uneven portions for forming the secondary side cavity 302 are formed at the tips of the cylindrical portions 46c and 46d. In FIG. 3, the left cylindrical portion may be referred to as a cylindrical portion 46c, and the right cylindrical portion may be referred to as a cylindrical portion 46d.

A pair of primary side center cores 46a are formed on the movable side intermediate plate 42 on the left side of the cylindrical portion 46c in FIG. The pair of primary side center cores 46a are each formed in a substantially columnar shape protruding in the X-axis direction. The length of the pair of primary side center cores 46a is set so that the tip thereof protrudes inside the movable side mold plate 41 in the mold-clamped state.

Further, an uneven portion for forming the primary side cavity 301 is formed at the tip of the primary side center core 46a. Specifically, the radius of the tip of the primary side center core 46a is formed to have the same dimension as the inner diameter radius of the base portion 221 of the flange portion 220 which is a primary molded product.

The pair of primary side center cores 46a are arranged so as to correspond to the primary side convex surface 30a arranged on the left side in FIG. The tip of the primary side center core 46a is configured to abut against the primary side convex surface 30a when the mold is clamped. The pair of primary side center cores 46a are symmetrically configured with the primary side resin passage 29a as the center in the Y-axis direction.

Further, on the movable side intermediate plate 42, a pair of primary side center cores 46b are formed on the right side of the cylindrical portion 46d in FIG. The pair of primary side center cores 46b is configured in the same manner as the pair of primary side center cores 46a. Further, the pair of primary side center cores 46b are arranged so as to correspond to the primary side convex surface 30b arranged on the right side in FIG.

The primary side center cores 46a and 46b are provided so as to be aligned in a row together with the cylindrical portions 46c and 46d (or the secondary side center cores 44c and 44d) in the Y-axis direction. At that time, the spacing L21 in the pair of primary side center cores 46a, the spacing L22 in the pair of primary side center cores 46b, and the spacing L23 in the cylindrical portions 46c and 46d are all set to be the same. ing. Further, the distance L24 between the primary side center core 46a and the cylindrical portion 46c (or the secondary side center core 44c) is the distance between the primary side center core 46b and the cylindrical portion 46d (or the secondary side center core 44d). It is set to be the same as the interval L25.

Further, the movable side intermediate plate 42 is formed with an insertion hole 47 into which a part of the movable side wedge portion 50 having a square columnar shape is inserted. As shown in FIGS. 4 and 5, the insertion hole 47 is provided so as to open toward the fixed mold 20 in the X-axis direction. Further, as shown in FIG. 4, the insertion holes 47 are arranged on both outer sides of the primary side center core 46a in the Z-axis direction. Similarly, the insertion holes 47 are arranged on both outer sides of the primary side center core 46b in the Z-axis direction.

Further, as shown in FIG. 5, the insertion holes 47 are arranged on both outer sides of the cylindrical portion 46d in the Z-axis direction. Further, the insertion holes 47 are arranged on both outer sides of the cylindrical portion 46c in the Z-axis direction. Each insertion hole 47 is provided symmetrically with respect to the primary side center cores 46a and 46b or the cylindrical portions 46c and 46d in the Z-axis direction. Therefore, as shown in FIG. 23, the insertion holes 47 are arranged in two rows along the Y-axis direction. Each of the insertion holes 47 is intermittently arranged along the Y-axis direction so as to sandwich the primary side center cores 46a, 46b or the cylindrical portions 46c, 46d corresponding to the arrangement. Will be.

As shown in FIGS. 4 and 5, the movable side wedge portion 50 inserted into the insertion hole 47 has an inclined surface 50a formed inward in the Z-axis direction, and the tip (fixed type side) is formed in the X-axis direction. It is formed so that the width in the Z-axis direction becomes short. A hozo having a T-shaped cross section is formed on the inclined surface 50a. In other words, guide grooves 50b having an inclination angle similar to that of the inclined surface 50a are formed along the inclined surface 50a on both side surfaces of the movable side wedge portion 50 in the Y-axis direction. Further, a groove 50c is formed near the lower end portion of the movable side wedge portion 50 in the X-axis direction and opens outward in the Z-axis direction on the outside in the Z-axis direction.

Further, the movable side intermediate plate 42 is provided with a pair of release bars 51 formed in a rod shape. The release bar 51 has a rectangular cross section as shown in FIG. 5, and is provided linearly along the Y-axis direction as shown by a broken line in FIG. As shown in FIG. 3, the length of the release bar 51 in the Y-axis direction is set so as to cover the right primary side center core 46b and the cylindrical portions 46c and 46d. Further, as shown in FIG. 23, the release bar 51 is provided with a protrusion 51a protruding inward in the Z-axis direction.

The release bar 51 is accommodated in an accommodating hole 52 provided along the Y-axis direction so as to be movable in the Y-axis direction. As shown in FIGS. 5 and 7, each accommodation hole 52 is provided on the outside of the insertion hole 47 in the Z-axis direction so as to be connected to the insertion hole 47. Then, as shown in FIG. 5, each accommodation hole 52 is configured such that the protrusion 51a of the release bar 51 accommodated in the accommodation hole 52 can protrude in the Z-axis direction.

The accommodating hole 52 is formed so as to correspond to the groove 50c of the movable side wedge portion 50. That is, when the movable side wedge portion 50 is inserted into the insertion hole 47, the accommodating hole 52 and the groove 50c of the movable side wedge portion 50 are configured to coincide with each other in the X-axis direction. In this state, as shown in FIG. 23, when the release bar 51 is moved to the accommodating hole 52 and the protrusion 51a of the release bar 51 is engaged with the groove 50c, the movable side wedge portion 50 moves in the X-axis direction. It is possible to lock to regulate. That is, it is possible to fix the movable side wedge portion 50 to the movable side intermediate plate 42.

The protrusion 51a is configured to be able to protrude only into the insertion holes 47 arranged on both outer sides of the cylindrical portions 46c and 46d in the Z-axis direction. That is, the release bar 51 is configured so that only the movable side wedge portion 50 inserted into the insertion hole 47 on both outer sides of the cylindrical portions 46c and 46d can be locked, and the other movable side wedge portions 50 cannot be locked. It has become.

As shown in FIGS. 3 and 6, the movable side template 41 is configured to be separable from the movable side intermediate plate 42 in the X-axis direction. Further, the movable side template 41 is configured to be separable from the fixed side template 23 in the X-axis direction. The movable side template 41 includes a rectangular plate-shaped base member 48 and a slide plate 49. As shown in FIGS. 24 and 25, the base member 48 is formed with a housing groove 48a along the Y-axis direction, and the slide plate 49 is movably housed in the housing groove 48a in the Y-axis direction. ..

As shown in FIGS. 4 and 5, the slide plate 49 is provided with a plurality of movable side split type units 53 (two in this embodiment). Therefore, each movable side split type unit 53 moves in the Y-axis direction together with the slide plate 49. The movable side split type units 53 are arranged so as to be separated from each other along the Y-axis direction.

Each movable side split type unit 53 is divided in the Z-axis direction, and is assembled to the slide plate 49 so as to be separated and close to each other in the Z-axis direction. Further, when the movable side split type units 53 are close to each other, a pair of cavities 54 are formed inside. The tips of the primary side center cores 46a and 46b can be accommodated in the pair of cavities 54, respectively. An uneven portion for forming the primary side cavity 301 and the secondary side cavity 302 is formed on the inner peripheral surface of each movable side split type unit 53. Further, in each movable side split type unit 53, the end surface on the X-axis side is exposed toward the side of the fixed type 20. Then, as shown in FIG. 12 and the like, uneven portions for forming the primary side cavity 301 are also formed on the end surface 53a (opposite surface of the fixed type 20) in the X-axis direction of each movable side split type unit 53. ing.

Further, the cavities 54 formed in each movable side split type unit 53 are arranged so as to be separated from each other along the Y-axis direction. Specifically, the distance L21 in the Y-axis direction of the pair of cavities 54 located on the left side in FIG. 6 is the same as the distance L23 in the Y-axis direction of the pair of cavities 54 located on the right side. Further, the distance L21 in the Y-axis direction of the pair of cavities 54 located on the left side in FIG. 6 is the same as the distance L21 in the pair of primary side center cores 46a. Similarly, the spacing L21 is the same as the spacing L22 in the pair of primary center cores 46b. Similarly, the distance L21 is the same as the distance L23 between the cylindrical portion 46c and the cylindrical portion 46d (or the distance L23 between the secondary side center core 44c and the secondary side center core 44d).

Further, in FIG. 6, the distance L24 between the pair of cavities 54 located on the left side and the pair of cavities 54 located on the right side is the primary side center core 46a and the cylindrical portion 46c (or the secondary side center core 44c). ) Is the same as the interval L24. Similarly, the distance L24 is the same as the distance L25 between the primary side center core 46b and the cylindrical portion 46d (or the secondary side center core 44d).

Therefore, when the movable side split type unit 53 located on the left side is moved in the Y-axis direction so as to correspond to the primary side center core 46a, the movable side split type unit 53 located on the right side is , Will be arranged so as to correspond to the cylindrical portions 46c, 46d (and the secondary side center cores 44c, 44d). Hereinafter, the state in which the slide plate 49 is arranged on the left side in this way may be referred to as a first position.

Similarly, when the movable side split type unit 53 located on the left side is moved in the Y-axis direction so as to correspond to the cylindrical portions 46c and 46d, the movable side split type unit 53 located on the right side is It will be arranged so as to correspond to the primary side center core 46b. Hereinafter, the state in which the slide plate 49 is arranged on the right side in this way may be referred to as a second position.

When the mold 10 is configured as described above, as shown in FIG. 3 or 22, when the mold 10 is in the mold-clamped state at the first position (left side) of the slide plate 49, the movable side split mold is used. Units 53 are in close proximity. Further, the primary side center core 46a is housed inside the adjacent movable side split type unit 53, and a pair of primary side cavities 301 corresponding to the outer shape of the flange portion 220 is configured. More specifically, 1 is due to the inner peripheral surface (cavity 54) of the movable side split type unit 53, the end surface 53a on the fixed mold side, the tip of the primary side center core 46a, and the primary side convex surface 30a of the fixed side template 23. The next cavity 301 is configured.

Of the primary side cavities 301, the one located on the left side in FIG. 3 or FIG. 22 may be referred to as the primary side cavity 301a. The primary side cavity 301a is connected to the primary side resin passage 29a via a runner or a gate (not shown) so that the resin on the primary side flowing out from the primary side resin passage 29a flows in (injects). It has become.

Further, as shown in FIG. 13, when the mold 10 is in the mold clamping state at the second position (right side) of the slide plate 49, the movable side split mold unit 53 is close to each other, and the movable side split mold unit 53 is close to each other. A primary side center core 46b is housed inside, and a pair of primary side cavities 301 corresponding to the outer shape of the flange portion 220 is formed. More specifically, the inner peripheral surface (cavity 54) of the movable side split type unit 53, the end surface 53a on the fixed mold side, the tip of the primary side center core 46b, and the primary side convex surface 30b of the fixed side template 23 1 The next cavity 301 is configured.

Of the primary side cavities 301, the one located on the right side in FIG. 13 may be referred to as the primary side cavity 301b. The primary side cavity 301b is connected to the primary side resin passage 29b via a runner or a gate (not shown) so that the resin on the primary side flowing out from the primary side resin passage 29b flows in (injects). It has become.

Further, when the mold is fastened at either the first position (FIG. 22) or the second position (FIG. 13), the movable side split type unit 53 is close to the inside of the close movable side split type unit 53. The secondary side center cores 44c and 44d are accommodated, and the secondary side cavity 302 corresponding to the outer shape of the resin molded product 200 is configured. More specifically, the inner peripheral surface (cavity 54) of the movable side split type unit 53, the end surface 53a on the fixed type side, the secondary side center cores 44c, 44d, the tips of the cylindrical portions 46c, 46d, the fixed side split type unit 32c, The secondary side cavity 302 is configured by the inner peripheral surface of 32d, the movable side end surface, the movable side end surface of the nests 31c and 31d, and the like.

Of the secondary cavity 302, the one located on the left side in FIG. 22 may be referred to as the secondary cavity 302c, and the one located on the right side may be referred to as the secondary cavity 302d. The secondary side cavity 302c is connected to the secondary side resin passage 29c via a runner or a gate (not shown) so that the secondary side resin flowing out from the secondary side resin passage 29c flows in (injection). It has become. Similarly, the secondary side cavity 302d is connected to the secondary side resin passage 29d via a runner or a gate (not shown), and the secondary side resin flowing out from the secondary side resin passage 29d is flowed in (injected). It has become so.

Further, the slide plate 49 has a length capable of covering from one primary side cavity 301a to the secondary side cavity 302 in the Y-axis direction, and has a length from the other primary side cavity 301b to the secondary side cavity 302. It has a length that can cover up to 302. The length L10a from the primary side cavity 301a to the secondary side cavity 302 is a distance from the left end of the primary side cavity 301a to the right end of the secondary side cavity 302d as shown in FIG. 22. Further, the length L10b from the primary side cavity 301b to the secondary side cavity 302 is a distance from the right end of the primary side cavity 301b to the left end of the secondary side cavity 302c as shown in FIG.

Further, as shown in FIGS. 4, 5, 7, and 8, in the Z-axis direction, the outer surface 55 of each movable side split type unit 53 is inclined with respect to the X-axis direction. The outer surface 55 is formed so that the fixed side portion of the movable side split type unit 53 is wider than the non-fixed side portion in the X-axis direction.

Further, the outer surface 55 is formed so as to correspond to the inclined surface 50a of the movable side wedge portion 50, and has a dovetail groove having a T-shaped cross section so that the hozo of the movable side wedge portion 50 fits. It is formed. In other words, a groove having a guide protruding inward in the Y-axis direction is formed at the opening so as to fit into the guide groove 50b. As a result, as long as the dovetail groove and the hozo are fitted, the movable side split type unit 53 moves relative to the movable side wedge portion 50 along the inclined direction of the inclined surface 50a. There is.

Therefore, as shown in FIG. 8, when the movable side intermediate plate 42 is separated from the movable side template 41 in the X-axis direction, the movable side wedge portion 50 moves in the X-axis direction, so that the movable side split type unit 53 Are spaced apart in the Z-axis direction. On the other hand, when the movable side intermediate plate 42 and the movable side template 41 are close to each other, as shown in FIG. 5, the movable side split type unit 53 is brought close to each other by the movement of the movable side wedge portion 50 in the X-axis direction. It has become.

Further, when the movable side wedge portion 50 is not locked to the movable side intermediate plate 42 by the release bar 51, the movable side wedge portion 50 is a movable side template, for example, as shown in FIGS. 11 and 12. It is held by the slide plate 49 of 41. That is, in this state, the movable side wedge portion 50 is configured to move in the Y-axis direction together with the slide plate 49.

Next, the take-out device 11 will be described. As shown in FIG. 1, the take-out device 11 has a chuck portion 81 as a grip portion for gripping the resin molded product 200, a motor 81a as a drive portion for driving the chuck portion 81, and a transport unit for moving the chuck portion 81. The transport mechanism 82 is provided. As shown in FIGS. 6 and 8, the chuck portion 81 is inserted into the inner peripheral surface of the resin molded product 200, and the claw portion is expanded from the inner peripheral surface side to grip the resin molded product 200. The structure of the chuck portion 81 is not limited to this, and the resin molded product 200 may be gripped from the outer peripheral side by the claw portion, or the resin molded product 200 may be gripped by a suction mechanism that attracts the resin molded product 200 by air. , Any mechanism may be used according to the shape of the resin molded product.

The transport mechanism 82 includes a mechanism for moving the chuck portion 81 in the Y-axis direction and a mechanism for moving the chuck portion 81 in the X-axis direction. The transport mechanism 82 linearly moves the chuck portion 81 in each of the X-axis direction, the Y-axis direction, and the Z-axis direction, or in one or two directions according to the shape of the resin molded product 200. It may be a mechanism such as an articulated arm.

The chuck portion 81, the motor 81a, and the transport mechanism 82 are controlled by the control unit. The control unit may be one provided in the extraction device 11 or may be a control device 15 provided in the injection molding machine 12.

The transport mechanism 82 is configured to move the chuck portion 81 between the fixed mold 20 and the movable mold 40 along the Y-axis direction while the fixed mold 20 and the movable mold 40 are separated from each other. .. Further, the transport mechanism 82 is configured to move the chuck portion 81 arranged between the fixed mold 20 and the movable mold 40 toward the resin molded product 200. Specifically, the transport mechanism 82 is configured to move the chuck portion 81 to the inner peripheral side of the resin molded product 200 by moving it in the X-axis direction. From the above, the transport mechanism 82 corresponds to the first transport unit and the second transport unit.

Further, the motor 81a drives the chuck portion 81 so that the chuck portion 81 moved to the inner peripheral side of the resin molded product 200 by the transport mechanism 82 grips the resin molded product 200. Further, the transport mechanism 82 is configured to move the chuck portion 81 holding the resin molded product 200 from the mold 10 to take out the resin molded product 200 from the mold 10.

The operation of the molding system 100 configured as described above will be described. FIG. 26 is a flowchart of the molding process carried out by the control device 15. Further, in the following description, as shown in FIGS. 3 to 5, the state in which the slide plate 49 is arranged at the first position and the mold 10 is molded is defined as the initial state. .. In this initial state, the flange portion 220, which is a primary molded product, is already molded in the primary side cavity 301a on the left side in FIG. 3, and the central secondary side cavity 302 (302c, 302d). Will be described on the premise that the resin molded product 200 has already been molded. Further, it is assumed that the protrusion 51a of the release bar 51 is engaged with the groove 50c of the movable side wedge portion 50 and the movable side wedge portion 50 is locked to the movable side intermediate plate 42.

First, the control device 15 controls the mold clamping unit 14 to carry out the first step (step S101) of separating the fixed mold 20 and the movable mold 40 from the initial state. Specifically, the movable side mounting portion 43 is separated from the movable side intermediate plate 42, and the secondary side center cores 44c and 44d are pulled out from the secondary side cavity 302. Then, the fixed-side template 23 is separated from the fixed-side intermediate plate 22 to separate the gate, and the fixed-side wedge portion 28 is moved in the X-axis direction to separate the fixed-side split type units 32c and 32d. .. Then, the fixed side intermediate plate 22 is separated from the fixed side mounting portion 21. Then, the movable side template 41 is separated from the fixed side template 23 to expose a part of the tubular portion 210 of the resin molded product 200. Further, the runner stripper plate 21a of the fixed side mounting portion 21 is separated from the other plates 21b in the X-axis direction, and the runner sprue is discharged from the fixed side mounting portion 21.

Next, the transport mechanism 82 of the take-out device 11 moves the chuck portion 81 from between the fixed mold 20 and the movable mold 40, and the chuck portion 81 grips the resin molded product 200 in the second step (step S102). ). The second step may be carried out directly by the control device 15 controlling the take-out device 11, or may be carried out by the take-out device 11 by the control device 15 issuing an instruction to the take-out device 11. You may.

Then, the control device 15 controls the mold clamping unit 14 to carry out the third step (step S103) of separating the movable side intermediate plate 42 from the movable side mold plate 41. In the third step, the protruding portion 51a of the release bar 51 is engaged with the groove 50c of the movable side wedge portion 50, and the movable side wedge portion 50 is locked to the side of the movable side intermediate plate 42, and the movable side intermediate plate is locked. The 42 is separated from the movable side template 41. As a result, the mold opening state shown in FIGS. 6 and 8 is entered. Therefore, the movable side split type unit 53 forming the secondary side cavity 302 is separated in the Z-axis direction by the movement of the movable side wedge portion 50, and the resin molded product 200 is released. At this time, since the resin molded product 200 is gripped by the chuck portion 81, it does not fall even if it is released from the movable side split type unit 53.

In this state, as shown in FIG. 7, the movable side split type unit 53 constituting the primary side cavity 301a remains close to the movable side split type unit 53 constituting the primary side cavity 301a. There is. Therefore, the flange portion 220, which is a primary molded product, is fixed by the movable side split type unit 53 and does not fall.

Then, the transport mechanism 82 of the take-out device 11 moves the chuck portion 81 from between the fixed mold 20 and the movable mold 40 while holding the resin molded product 200, and takes out the resin molded product 200 from the mold 10. The fourth step (step S104) is carried out. As in the second step, the control device 15 may directly carry out the fourth step, or the control device 15 issues an instruction to the take-out device 11 to cause the take-out device 11 to carry out the fourth step. May be good.

After that, as shown in FIG. 9, the control device 15 controls the mold clamping unit 14, so that the movable side intermediate plate 42 is brought close to the movable side mold plate 41, and the lock by the release bar 51 is released. (Step S105) is carried out. In the fifth step, the movable side split type unit 53 constituting the secondary side cavity 302 comes close to each other.

Next, a sixth step in which the control device 15 controls the mold clamping unit 14 to separate the movable side intermediate plate 42 from the movable side mold plate 41 in the X-axis direction in a state where the lock by the release bar 51 is released. (Step S106) is carried out. As a result, the mold 10 is in the state shown in FIGS. 10 to 12.

In this case, the movable side wedge portion 50 remains on the side of the movable side template 41 on both sides of the movable side split type unit 53 in the Z-axis direction so as to sandwich each movable side split type unit 53. Therefore, as shown in FIGS. 11 and 12, each movable side split type unit 53 is kept in a close state by the movable side wedge portion 50. Therefore, the flange portion 220 molded in the primary side cavity 301a is in a state of being fixed by the movable side split type unit 53.

Then, the control device 15 controls the mold clamping unit 14, and as shown by the arrow in FIG. 10, the slide plate 49 is moved in the Y-axis direction so as to be moved from the first position to the second position. The step (step S107) is carried out. As a result, the flange portion 220 molded in the primary side cavity 301a moves to the central position, that is, the position for forming the secondary side cavity 302 in a state of being fixed by the movable side split type unit 53. .. Therefore, the slide plate 49 moves the flange portion 220 molded in the primary side cavity 301a to the secondary side cavity 302.

After the slide plate 49 is moved to the second position by the control device 15 controlling the mold clamping unit 14, the eighth step (step S108) in which the mold 10 is closed and the mold is brought into the mold clamping state is carried out. In this state, as shown in FIG. 13, the primary side cavity 301b is formed on the right side. Further, a secondary side cavity 302 is formed in the center. At this time, since the flange portion 220 is housed in the secondary side cavity 302, a cavity corresponding to the shape of the tubular portion 210 is formed. Further, when the mold is fastened, the release bar 51 is moved to lock the movable side wedge portion 50 by the release bar 51.

Next, the ninth step (nineth step) in which the control device 15 controls the injection unit 13 to inject the primary side resin into the primary side cavity 301b and inject the secondary side resin into the secondary side cavity 302 ( Step S109) is carried out. As a result, as shown in FIG. 14, the secondary side resin is filled in the secondary side cavity 302, and the resin molded product 200 is molded. Further, the primary side cavity 301b is filled with the primary side resin, and the flange portion 220 is molded.

After each resin is solidified, the control device 15 controls the mold clamping unit 14 to carry out the tenth step (step S110) of separating the fixed mold 20 and the movable mold 40. The tenth step is the same step as the first step.

Next, the transport mechanism 82 of the take-out device 11 moves the chuck portion 81 from between the fixed mold 20 and the movable mold 40, and causes the chuck portion 81 to grip the resin molded product 200, as in the second step. The eleventh step (step S111) is carried out.

Then, as shown in FIGS. 15 to 17, the control device 15 controls the mold clamping unit 14, so that the movable side intermediate plate 42 is separated from the movable side mold plate 41 in the twelfth step (as in the third step). Step S112) is carried out. As a result, as shown in FIG. 17, the movable side split type unit 53 forming the secondary side cavity 302 is separated in the Z-axis direction by the movement of the movable side wedge portion 50, and the resin molded product 200 is released. On the other hand, as shown in FIG. 16, the flange portion 220 formed in the primary side cavity 301b is maintained fixed by the movable side split type unit 53.

Then, the transport mechanism 82 of the take-out device 11 moves the chuck portion 81 from between the fixed mold 20 and the movable mold 40 while holding the resin molded product 200, as in the fourth step, to move the chuck portion 81 to the mold 10. The thirteenth step (step S113) of taking out the resin molded product 200 from the above is carried out.

After that, as in the fifth step, the control device 15 controls the mold clamping unit 14, so that the movable side intermediate plate 42 is brought close to the movable side mold plate 41 as shown in FIG. 18, and the release bar 51 is used. The 14th step (step S114) of releasing the lock is carried out.

Next, as in the sixth step, the movable side intermediate plate 42 is as shown in FIGS. 19 to 21 in a state where the control device 15 controls the mold clamping unit 14 to release the lock by the release bar 51. Is carried out in the fifteenth step (step S115) of separating the movable side template 41 from the movable side template 41. At this time, as shown in FIG. 20, the flange portion 220 molded in the primary side cavity 301b is in a state of being fixed by the movable side split type unit 53. Further, as shown in FIGS. 19 to 20, each movable side wedge portion 50 is inserted into the slide plate 49 and is in a fixed state.

Then, by controlling the mold clamping unit 14, the control device 15 carries out the 16th step (step S116) of moving the slide plate 49 in the Y-axis direction so as to move the slide plate 49 from the second position to the first position. As a result, the flange portion 220 molded in the primary side cavity 301b moves to the central position, that is, the position for forming the secondary side cavity 302 in a state of being fixed by the movable side split type unit 53. .. That is, the slide plate 49 moves the flange portion 220 molded in the primary side cavity 301b to the secondary side cavity 302.

Then, the control device 15 controls the mold clamping unit 14, and after moving the slide plate 49 to the first position, the 17th step (step S117) of closing the mold 10 and putting the mold into the mold clamping state is carried out. .. As a result, as shown in FIG. 22, in this state, the primary side cavity 301a is formed on the left side. Further, a secondary side cavity 302 is formed in the center. At this time, since the flange portion 220 is housed in the secondary side cavity 302, a cavity corresponding to the shape of the tubular portion 210 is formed. At this time, the movable side wedge portion 50 is locked by the release bar 51.

Next, by controlling the injection unit 13, the control device 15 injects the primary resin into the primary cavity 301a and the secondary resin into the secondary cavity 302 (18th step). Step S118) is carried out. When these resins solidify, they return to the initial state shown in FIG. After that, the first step to the eighteenth step will be repeatedly carried out.

According to the first embodiment configured as described above, the following effects can be obtained.

The take-out device 11 of the molding system 100 includes a chuck portion 81 for gripping the resin molded product 200, a transport mechanism 82 for taking out the resin molded product 200 from the mold 10, and a motor 81a. The transport mechanism 82 moves the chuck portion 81 between the fixed mold 20 and the movable mold 40 in a state where the fixed mold 20 and the movable mold 40 are separated from each other, and then moves the chuck portion 81 between the fixed mold 20 and the movable mold 40. The arranged chuck portion 81 is moved toward the resin molded product 200. The motor 81a drives the chuck portion 81 so that the chuck portion 81 moved to the resin molded product 200 by the transport mechanism 82 grips the resin molded product 200. After that, the transport mechanism 82 moves the chuck portion 81 so as to take out the resin molded product 200 from the mold 10. This eliminates the need for the mold 10 to be provided with a mechanism for discharging the resin molded product 200 from the mold 10. Therefore, it is not necessary to provide the mold 10 with a hole for movably accommodating the ejector pin and a gap for moving the ejector pin.

Therefore, in the movable mold 40, when the mold 10 is molded, a plurality of plates, that is, the movable side mounting portion 43 and the movable side intermediate plate, are formed at least in the portion overlapping the primary side cavity 301 in the X-axis direction. The 42 and the movable side template 41 are laminated without a gap.

Further, also in the fixed mold 20, when the mold 10 is molded, a plurality of plates, that is, the fixed side mounting portion 21, the fixed side intermediate plate, at least in the portion overlapping the primary side cavity 301 in the X-axis direction. 22 and the fixed side template 23 are laminated without a gap. That is, in the portion of the mold 10 that overlaps with the primary side cavity 301 in the X-axis direction, the space where the resin is scheduled to flow in (resin passages 25a, 25b, runners 26a, 26b, primary side resin passage 27a, It means that no space is formed in the portion other than 27b, 29a, 29b). As a result, even if the high-pressure primary resin is injected into the primary cavity 301, the primary cavity 301 of the mold 10 is less likely to be distorted and burrs are less likely to occur.

Similarly, in the movable mold 40, when the mold 10 is molded, a plurality of plates, that is, the movable side mounting portion 43 and the movable side intermediate plate 42, are formed in the portion overlapping the secondary side cavity 302 in the X-axis direction. , And the movable side template 41 are laminated without a gap.

Further, also in the fixed mold 20, a plurality of plates, that is, the fixed side mounting portion 21, the fixed side intermediate plate, at least in the portion overlapping the secondary side cavity 302 in the X-axis direction when the mold 10 is molded. 22 and the fixed side template 23 are laminated without a gap. That is, in the portion of the mold 10 that overlaps with the secondary side cavity 302 in the X-axis direction, the space where the resin is scheduled to flow in (resin passage 25c, runner 26c, secondary side resin passage 27c, 27d, 29c, It means that the space is not formed in the part other than 29d). As a result, even if the high-pressure secondary resin is injected into the secondary cavity 302, the secondary cavity 302 of the mold 10 is less likely to be distorted and burrs are less likely to occur.

The movable type 40 has a movable side split type unit 53 as a fixing mechanism for switching between fixing and releasing the resin molded product 200. More specifically, the movable type 40 has a movable side split type unit 53 as a fixing mechanism in which the fixing and releasing of the flange portion 220 is switched by the arrangement of the movable side wedge portion 50 in the resin molded product 200. Then, the movable side split type unit 53 is separated in the Z-axis direction after the fixed mold 20 and the movable mold 40 are separated from each other, and after the take-out device 11 grips the resin molded product 200, the resin molded product 200 is separated. To release. Therefore, it is possible to prevent the resin molded product 200 from falling.

The mold 10 is configured such that the primary side cavities 301a and 301b can be formed on both sides of the secondary side cavity 302 in the Y-axis direction, respectively. The movable mold 40 is a slide plate that is configured to be reciprocally movable in the Y-axis direction and that moves the primary molded product (flange portion 220) molded in the primary side cavities 301a and 301b to the secondary side cavity 302. Has 49. The slide plate 49 has a length capable of covering from one primary cavity 301a to the secondary cavity 302 in the Y-axis direction, and has a length from the other primary cavity 301b to the secondary cavity 302. It has a length that can cover up to.

Therefore, for example, as shown in FIGS. 10 and 13, when the flange portion 220 molded in the left primary side cavity 301a is moved to the central secondary side cavity 302, it is located in the secondary side cavity 302. The movable side split type unit 53 that has been moved will move to the primary side cavity 301b on the right side. That is, when it is moved to the second position, the slide plate 49 is in a state where the flange portion 220 can be molded in the primary side cavity 301b on the right side. The same applies to the case where the flange portion 220 molded in the right primary side cavity 301b is moved to the secondary side cavity 302, that is, the case where the slide plate 49 is moved to the first position.

In this way, in either the first position or the second position, the flange portion 220 is molded in the primary side cavity 301, and the tubular portion 210 of the resin molded product 200 is molded in the secondary side cavity 302. Can be done. Therefore, the resin molded product 200 can be efficiently completed only by reciprocating between the first position and the second position.

The slide plate 49 is provided with a movable side split type unit 53 for fixing and releasing the flange portion 220. Then, as shown in FIGS. 10 to 12 and the like, the slide plate 49 can be moved and moved to the secondary side cavity 302 while the flange portion 220 is fixed by the movable side split type unit 53. Therefore, it is possible to prevent the flange portion 220 from falling when the slide plate 49 is moved.

On the other hand, the release bar 51 can fix the movable side wedge portion 50 to the movable side intermediate plate 42. This makes it possible to release the resin molded product 200 at a desired timing, that is, after the take-out device 11 grips the resin molded product 200, and it is possible to prevent the resin molded product 200 from falling. Further, since the completed resin molded product 200 can be released at the same position, it can be easily taken out by the taking-out device 11.

As shown in FIG. 2, the resin molded product 200 is a product in which a tubular portion 210, which is a secondary molded product, is molded on the inner peripheral surface of a flange portion 220, which is a primary molded product. The secondary molded product is not molded so as to cover the outer periphery. Then, once the primary molded product is removed from the mold, there is a high possibility that the shape of the primary molded product will change due to the characteristics of the resin (expansion, contraction, etc.). Therefore, it is difficult to fit it into the same mold again.

Therefore, in the present embodiment, when the flange portion 220 is molded in the primary side cavity 301, the slide plate 49 is moved while being in a close state without separating the movable side split type unit 53 that determines the outer shape thereof. It was moved to the secondary side cavity 302. As a result, the flange portion 220, which is a primary molded product, can be accommodated in the secondary cavity 302 without being released from the mold. As a result, the flange portion 220 can be easily accommodated in the secondary side cavity 302, and the outer shape of the resin molded product 200 can be accurately molded.

Since the chuck portion 81 is gripped from the inner peripheral side of the resin molded product 200, it is possible to leave no gripping mark on the outer shape of the resin molded product 200.

A movable side split type unit 53 provided so as to be able to switch between fixing and releasing the flange portion 220 is provided. Then, by releasing the flange portion 220 by the movable side split mold unit 53 while the resin molded product 200 is gripped by the chuck portion 81, the mold 10 can be reliably removed without providing an ejection mechanism such as an ejector pin. The resin molded product 200 can be released from the mold.

(Modification example)
-In the above embodiment, the left primary side cavity 301a, the secondary side cavity 302, and the right side primary side cavity 301b are provided with one pair each, but the number thereof may be arbitrarily changed. For example, one may be provided for each, or three or more may be provided for each.

-In the above embodiment, the mold is molded in two colors, but it does not have to be molded in two colors. Further, the initial state may be arbitrarily changed, and may be executed first from any process.

10 ... mold, 11 ... take-out device, 20 ... fixed type, 40 ... movable type, 49 ... slide plate, 81 ... chuck part, 82 ... transfer mechanism, 100 ... molding system, 220 ... flange part, 301 ... primary side Cavity, 302 ... Secondary cavity.

The present invention relates to a molding system including a mold for molding a resin and an extraction device for taking out a resin molded product from the mold.

The present invention has been made in view of the above circumstances, and a main object thereof is to provide a molding system capable of eliminating distortion of a mold due to injection pressure and suppressing burrs.

Claims (4)

A cavity having a fixed mold and a movable mold that is movable with respect to the fixed mold, and formed between the fixed mold and the movable mold in a state where the fixed mold and the movable mold are molded. The mold in which the resin is injected and the mold
An extraction device that takes out the resin molded product from the mold,
In the molding system equipped with
The take-out device is
A grip portion that grips the resin molded product, and
A first transport unit that moves the grip portion between the fixed mold and the movable mold while the fixed mold and the movable mold are separated from each other.
A second transport unit that moves the grip portion arranged between the fixed mold and the movable mold by the first transport unit toward the resin molded product.
The grip portion moved toward the resin molded product by the second transport portion is provided with a drive unit for driving the grip portion so as to grip the resin molded product.
The mold is configured by laminating a plurality of plates in the X-axis direction, which is the movable direction thereof.
A molding system in which a plurality of plates are laminated without a gap in a portion of the mold that overlaps the cavity in the X-axis direction when the mold is fastened. The movable type includes a fixing mechanism for switching between fixing and releasing of the resin molded product.
The molding system according to claim 1, wherein the fixing mechanism releases the resin molded product after the fixed mold and the movable mold are separated from each other and after the take-out device grips the resin molded product. The mold is for performing two-color molding in which two types of resins are injected.
The resin on the primary side is injected into the mold on both sides of the cavity on the secondary side where the resin on the secondary side is injected in the Y-axis direction orthogonal to the movable X-axis direction of the movable mold. Each primary cavity is configured to be formable.
The movable type has a slide plate that is configured to be reciprocally movable in the Y-axis direction and that moves the primary molded product molded in the primary cavity to the secondary cavity.
The slide plate has a length that can cover from one primary cavity to the secondary cavity in the Y-axis direction, and from the other primary cavity to the secondary cavity. The molding system according to claim 1 or 2, which has a length capable of covering. A cavity having a fixed mold and a movable mold that is movable with respect to the fixed mold, and formed between the fixed mold and the movable mold in a state where the fixed mold and the movable mold are molded. In a mold used in a molding system equipped with a mold in which resin is injected and a take-out device for taking out a resin molded product from the mold.
The mold is for performing two-color molding in which two types of resins are sequentially injected.
The resin on the primary side is injected into the mold on both sides of the cavity on the secondary side where the resin on the secondary side is injected in the Y-axis direction orthogonal to the movable X-axis direction of the movable mold. Each primary cavity is configured to be formable.
The mold is configured by laminating a plurality of plates in the X-axis direction.
The plurality of plates include a slide plate that is configured to be reciprocally movable in the Y-axis direction and that moves a primary molded product molded in the primary cavity to the secondary cavity.
The slide plate has a length that can cover from one primary cavity to the secondary cavity in the Y-axis direction, and from the other primary cavity to the secondary cavity. Has a length that can cover
A mold in which a plurality of plates are laminated without a gap in a portion of the mold that overlaps the cavity in the X-axis direction when the mold is fastened.

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