JP4158043B2 - Insert molding apparatus and insert molding method - Google Patents

Description

  The present invention relates to an insert molding apparatus and an insert molding method using the same.

Conventionally, insert molding is known in which molding is performed in a state where the insert is accommodated in a cavity formed by a mold (see, for example, Patent Document 1).
In such insert molding, in order to convey and set the insert to the cavity forming portion of the mold that has been opened, a conveyance device that is different from a manual or molding device is used.

JP 2004-98323 A

As described above, when the insert is transported manually or by a transport device, the transport and the drive of the mold are performed separately, so that the production efficiency is poor. Furthermore, when the insert is transported manually or by a transport device, the mold closing drive is awaited until the transport is completed. To avoid interference between the person or the transport device and the mold, such waiting time is increased. Since it is necessary to take, production efficiency is further deteriorated. In addition, when the insert is manually transported, labor costs increase, and when the insert is transported by the transport device, it is necessary to construct a system that controls the operation timing of the transport device and the molding device. Even if the cost goes up.
In addition, when the insert is set in the mold in the mold open state as described above, the set position of the insert is shifted at the time of mold closing driving of the mold after the setting, the mold is damaged, or the product quality is reduced. Problems arise.

In view of the problems described above, an object of the present invention is to provide an insert molding apparatus and an insert molding method that improve production efficiency and reduce costs.
Another object of the present invention is to provide an insert molding apparatus and an insert molding method that improve product quality.

  According to invention of Claim 1, the metal mold | die which has a 1st type body, a 2nd type body, a pusher, and a through-hole is used. Here, the pusher matches the first mold body with the second mold body in the direction of relative movement of the first mold body with respect to the second mold body (hereinafter referred to as the relative movement direction of the first mold body) when the mold is closed. Projects from the surface. Further, the through hole is formed in the second mold body and extends along the relative movement direction of the first mold body, and is formed between the mold matching surface of the second mold body with the first mold body and the cavity of the mold. Connected. By adopting such a pusher and a through hole, when the mold is closed by the mold opening / closing means, the pusher presses the insert supplied to the through hole in the relative movement direction of the first mold body, so that the insert is It is conveyed toward the cavity through the through hole. As a result, the insert can be conveyed to the cavity simultaneously with the mold closing drive of the mold, so that the production efficiency is improved. Further, since the insert is conveyed by the action of the pusher provided in the mold, the conveyance of the insert can be controlled only by controlling the mold closing drive. For this reason, costs associated with mold drive control and insert conveyance control are reduced.

Note that the first mold body and the second mold body may be ones that move toward and away from one fixed position, or both move toward and away from each other. May be.
Moreover, the second mold may be composed of a single member or a complex of a plurality of members.

According to the second aspect of the present invention, since the through hole is formed in a shape in which the insert is fitted and slid when the mold is closed, the insert can be guided by the inner wall of the through hole. As a result, the insert can be conveyed to the cavity while maintaining its posture, so that the product quality is improved.
According to the third aspect of the present invention, since the through hole is formed in a shape in which the pusher is fitted and slid when the mold is closed, the pusher can be guided by the inner wall of the through hole. As a result, the movement of the pusher is stabilized, so that the mold can be closed smoothly.

According to the fourth aspect of the present invention, the through hole is closed by at least one of the insert and the pusher after completion of the mold closing drive of the mold. Thereby, it can prevent that the shaping | molding raw material with which a cavity is filled leaks outside through a through-hole.
According to the fifth aspect of the present invention, when the mold is driven to close the mold, the pusher is fitted to the insert by the protruding side end portion and presses the insert. As a result, the insert can be conveyed to the cavity while maintaining its posture, so that the product quality is improved.

  According to the invention described in claim 6, the protruding side end of the pusher forms a stepped portion whose diameter decreases stepwise as it goes to the foremost end. The side is inserted into the hole portion of the insert, and the large diameter side of the stepped portion is engaged with the outer peripheral side of the hole portion of the insert. Thereby, the posture of the insert during conveyance can be maintained more stably, and further improvement in product quality can be achieved.

The invention described in claim 7 further includes a supply means for automatically supplying the insert to the through hole, so that it is not necessary to wait for the mold closing drive of the mold to transport the insert. Accordingly, the production efficiency can be further improved.
According to an eighth aspect of the present invention, the supply means comprises holding means for aligning and holding a plurality of inserts, and guide means for guiding the endmost insert in the alignment direction to the supply position in the through hole. Is done. Thus, the plurality of inserts can be supplied to the through-holes one by one and positioned only by holding the plurality of inserts in the holding means.

  According to the ninth aspect of the present invention, the guide wall of the guide means surrounds the supply position of the insert in the through hole immediately below the accommodation hole of the holding means. As a result, among the plurality of inserts aligned in the substantially vertical direction and accommodated in the accommodation hole, the insert at the lowermost end portion can be guided to the supply position of the through hole by the gravitational action while being guided by the guide wall. According to the invention as set forth in claim 9, the supply means for automatically supplying the insert to the through hole can be realized by a simple configuration using the gravity action.

  According to the tenth aspect of the present invention, the moving body of the guide means reciprocally moves to both sides in a substantially horizontal direction, thereby opening the concave portion that opens upward, immediately below the accommodation hole of the holding means, and the supply position of the insert in the through hole. Displace between. Thereby, after the lowermost end insert among the plurality of inserts aligned in the substantially vertical direction and accommodated in the accommodation hole is guided to the concave portion immediately below the accommodation hole by the gravitational action, the feed position of the through hole is moved by the movement of the moving body Can be transported up to. According to the invention described in claim 10, the supply means for automatically supplying the insert to the through hole can be realized with a high degree of freedom of arrangement of the accommodation holes.

  According to the eleventh aspect of the present invention, the rotating body of the guide means rotates intermittently about an axis extending in a substantially horizontal direction, thereby opening a recess that opens to the outer peripheral side directly below the receiving hole of the holding means and the insert in the through hole. It is displaced between the supply positions of As a result, among the plurality of inserts aligned in a substantially vertical direction and accommodated in the accommodation hole, the insert at the lowermost end portion is guided to the recess immediately below the accommodation hole by gravity, and then the through hole is supplied by intermittent rotation of the rotating body. It can be transported to the position. According to the invention as set forth in claim 11, the supply means for automatically supplying the insert to the through hole can be realized with a high degree of freedom of arrangement of the accommodation holes.

  According to the twelfth aspect of the present invention, the insert molding device according to any one of the first to eleventh aspects of the present invention is used, and the mold is driven by the mold opening / closing means to be supplied to the through hole. The inserted insert is pressed by the pusher in the relative movement direction of the first mold body, and then the molding material is filled into the cavity. According to such invention of Claim 12, the effect by the invention as described in any one of Claims 1-11 used can be enjoyed.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
An insert molding apparatus according to a first embodiment of the present invention is shown in FIGS. FIG. 2 shows a state where the mold 20 of the insert molding apparatus 10 is completely closed, and FIG. 3 shows a state where the mold 20 of the insert molding apparatus 10 is completely opened. 2 and 3, the vertical direction and the horizontal direction represent the vertical direction and horizontal direction of the insert molding device 10, respectively.
The insert molding apparatus 10 includes a mold 20, a mold opening / closing apparatus 60 that drives the mold 20 to open and close the mold 20, and an injection machine 70 that injects a molding material into the mold 20.

The mold 20 has a plurality of plates 22, 24, and 26 that are matched by mold closing drive by the mold opening / closing device 60. The first plate 22 is disposed in such a manner that the second plate 24 is sandwiched between the third plate 26. The first plate 22 is attached to the fixed plate 62 of the mold opening / closing device 60 on the side opposite to the mold matching surface 32 with the second plate 24 and is fixed in position. The second plate 24 is configured to slide on a guide pin (not shown) provided on the first plate 22, and can move toward and away from the first plate 22. Here, the approaching movement of the second plate 24 relative to the first plate 22 is realized when the mold 20 is driven to close the mold 20 by the mold opening / closing device 60. Accordingly, the relative movement direction X of the first plate 22 with respect to the second plate 24 (hereinafter simply referred to as the relative movement direction X of the first plate 22) when the mold 20 is driven to close the mold is indicated by white arrows in FIG. It becomes a substantially horizontal direction. The third plate 26 is attached to the movable plate 66 of the mold opening / closing device 60 on the side opposite to the mold mating surface 36 with the second plate 24, and can move toward and away from the second plate 24. . In the state of FIG. 2 in which the mold 20 is completely closed, the second plate 24 and the third plate 26 form a cavity 38 between their mold matching surfaces 33 and 36.
As described above, the first plate 22 corresponds to the “first mold”, and the second plate 24 corresponds to the “second mold”.

  The first plate 22 is integrally formed with a pusher 40 that protrudes in the relative movement direction X of the first plate 22 from the mold matching surface 32 with the second plate 24. The pusher 40 is formed in a columnar shape that extends straight along the relative movement direction X of the first plate 22. In the pusher 40, the projecting side end portion forms a stepped portion 41 whose diameter decreases stepwise as it goes to the forefront. The small diameter side 42 of the stepped portion 41 has an outer diameter that can be fitted coaxially into the hole portion 82 of the annular insert 80 used for insert molding. The large diameter side 43 of the stepped portion 41 has substantially the same outer diameter as the insert 80. Accordingly, the large diameter side 43 of the stepped portion 41 is engaged with the one end surface 83 of the insert 80 that forms the outer peripheral side of the hole portion 82 when the small diameter side 42 of the stepped portion 41 is fitted into the hole portion 82 of the insert 80. Is possible. In the pusher 40, the proximal end side of the stepped portion 41 has substantially the same outer diameter as the large diameter side 43 of the stepped portion 41.

  The second plate 24 is formed with a through hole 50 that extends directly coaxially with the pusher 40 along the relative movement direction X of the first plate 22. The through hole 50 is a circular cylindrical hole in a cross section perpendicular to the axial direction, and has an inner diameter that allows the proximal end portion of the pusher 40 and the insert 80 to be fitted coaxially from the small diameter side 42 of the stepped portion 41. is doing. In addition, the through hole 50 has a length in the axial direction that is substantially the same as the proximal end side portion of the pusher 40 from the small diameter side 42 of the stepped portion 41. The through hole 50 connects the die-matching surface 34 of the second plate 24 with the first plate 22 and the die-matching surface 33 of the second plate 24 with the third plate 26. As described above, since the cavity 38 is formed between the mating surfaces 33 and 36 of the second and third plates 24 and 26 in the fully closed state of the mold 20, the through hole 50 is formed on the second plate 24. It also connects between the mold matching surface 34 and the cavity 38.

  The second plate 24 is formed with an accommodation hole 54 that extends directly in a substantially vertical direction. The receiving hole 54 has a rectangular shape in a cross section perpendicular to the axial direction, and has an internal method in which an insert 80 whose radial direction and axial direction substantially coincide with the vertical direction and the relative movement direction X of the first plate 22 can be inserted. Have. Further, the accommodation hole 54 has a length in the axial direction that is a multiple of the outer diameter of the insert 80 (here, five times). The accommodation hole 54 connects the end 51 on the first plate 22 side of the through hole 50 and the outer peripheral surface 35 of the second plate 24.

As shown in FIGS. 2 to 4, the insert 80 can be introduced into the accommodation hole 54 from the outer peripheral surface 35 side of the second plate 24. The accommodating hole 54 accommodates the plurality of inserts 80 introduced therein while being aligned in a substantially vertical direction, and holds each insert 80 by its inner wall 56. The insert 80 that reaches the lower end 55 of the receiving hole 54, that is, the insert 80 at the lowermost end in the alignment direction, does not have another insert 80 and pusher 40 at the end 51 of the through-hole 50 located immediately below the insert 80. Is automatically supplied to the end 51 by the gravitational action. At the time of this automatic supply, the insert 80 is guided on the outer peripheral side by the inner wall 52 of the end 51 of the through hole 50 and positioned at the end 51.
As described above, in the present embodiment, the accommodation hole 54 and the end portion 51 of the through hole 50 correspond to the “supply means”, the accommodation hole 54 corresponds to the “holding means”, and the end portion 51 of the through hole 50 corresponds to the “guide means”. The position where the insert 80 is positioned at the end 51 of the through-hole 50 immediately below the receiving hole 54 corresponds to the “insertion position”, and the inner wall 52 of the end 51 of the through-hole 50 corresponds to the insert 80. It corresponds to a “guide wall” surrounding the positioning position.

The mold opening / closing device 60 includes a fixed platen 62, a movable platen 66, a drive source 67, and a control unit 68. The fixed plate 62 fixes the position of the first plate 22. The movable platen 66 transmits the driving force generated by the driving source 67 to the third plate 26 and the second plate 24 to drive the plates 26 and 24. The control unit 68 is mainly composed of an electric circuit such as a microcomputer, and is electrically connected to the drive source 67. The control unit 68 controls the mold opening drive and the mold closing drive of the mold 20 by controlling the operation of the drive source 67.
As described above, the mold opening / closing device 60 corresponds to the “mold opening / closing means”.

  The injection machine 70 is electrically connected to the control unit 68, and injects the molding material into the mold 20 in a completely mold-closed state in accordance with a command from the control unit 68. The injected molding material is filled into the cavity 38 through runners and gates (both not shown) formed on the first and second plates 22 and 24. In addition, as a forming raw material, for example, a molten resin, a molten metal, or the like is used.

Next, the operation of the insert molding device 10 will be described.
As shown in FIG. 3, when a plurality of inserts 80 are introduced into the receiving holes 54 of the second plate 24 in a state where the mold 20 is completely opened, the mold is opened or closed automatically or in response to an instruction from the operator. The control unit 68 of the device 60 starts the mold closing drive of the mold 20.

  Specifically, in mold closing driving of the mold 20, first, the driving force of the driving source 67 is transmitted from the movable platen 66 to the third plate 26, and the third plate 26 moves closer to the second plate 24. By this approaching movement, the third plate 26 is die-matched with the second plate 24, and a cavity 38 is formed between the die-matching surfaces 36 and 33 of the plates 26 and 24.

  Thereafter, in the mold closing drive of the mold 20, the driving force of the driving source 67 is sequentially transmitted from the movable plate 66 to the third and second plates 26 and 24, and the plates 26 and 24 are integrated into the first. It moves closer to the plate 22. Then, first, the pusher 40 is fitted into the end portion 51 of the through hole 50 from the small diameter side 42 of the stepped portion 41. Subsequently, the small diameter side 42 of the stepped portion 41 is fitted into the hole portion 82 of the insert 80 positioned at the end portion 51 of the through hole 50, and the large diameter side of the stepped portion 41 is inserted into the end surface 83 of the insert 80. 43 abuts and engages. Further, the large diameter side 43 of the stepped portion 41 presses the end face 83 of the insert 80 in the relative movement direction X of the first plate 22, so that the insert 80 and the pusher 40 are inserted into the through hole as shown in FIG. It slides in the cavity 50 toward the cavity 38. Then, as shown in FIG. 2, when the second plate 24 is matched with the first plate 22, the insert 80 is positioned at a predetermined position of the cavity 38 in a state where the insert 80 is fitted to the small diameter side 42 of the stepped portion 41. . At this time, the foremost surface 44 of the stepped portion 41 is in close contact with the die matching surface 36 of the third plate 26.

  When the mold closing drive of the mold 20 is completed in this way, the injection machine 70 receives a command from the control unit 68 in a state where the mold clamping force is exerted on the mold 20 by the control of the drive source 67 by the control unit 68. To inject the molding material. Thereby, the molding raw material injected from the injection machine 70 is filled in the cavity 38 and encloses the insert 80 accommodated in the cavity 38. At this time, since the through hole 50 is closed by the large diameter side 43 of the stepped portion 41 fitted therein, the molding raw material filled in the cavity 38 does not leak to the outside through the through hole 50.

After waiting for the forming raw material filled in the cavity 38 to cool and solidify, the control unit 68 starts to open the mold 20.
Specifically, in the mold opening drive of the mold 20, first, the driving force of the drive source 67 shown in FIG. 5 is transmitted from the movable plate 66 to the third plate 26, and further through the insert molded product 90 in the cavity 38. 24, the plates 26, 24 move away from the first plate 22. Then, the pusher 40 slides in the through hole 50 in the direction Y opposite to the relative movement direction X of the first plate 22, so that the small diameter side 42 of the stepped portion 41 is first insert-molded as shown in FIG. After the product 90 is extracted from the insert 80, the entire pusher 40 is extracted from the through hole 50. When the pusher 40 is extracted from the through hole 50, the insert 80 at the lowermost end among the inserts 80 accommodated in the accommodation hole 54 is automatically supplied to the end 51 of the through hole 50 and positioned. Although not shown, when the pusher 40 is pulled out from the through hole 50, runners formed on the plates 22 and 24 and solidified material in the gate appear between the first plate 22 and the second plate 24. It is like that. The solidified product is removed by the action of, for example, a runner lock pin.

  Thereafter, in the mold opening drive of the mold 20, the movement of the second plate 24 is stopped by the action of the guide pin, while the movement of the third plate 26 is continued and the third plate 26 is moved relative to the second plate 24. To separate. Thereby, the cavity 38 is opened while the insert molded product 90 is held by the third plate 26. The insert-molded product 90 held by the third plate 26 is released from the third plate 26 by the action of, for example, an ejector pin, and is a finished product.

  According to the insert molding device 10 described above, when the mold 20 is driven to close, the pusher 40 presses the insert 80 supplied to the through hole 50 in the relative movement direction X of the first plate 22, thereby the insert 80. Is conveyed in the through hole 50 toward the cavity 38. Therefore, since the insert 80 can be conveyed to the cavity 38 simultaneously with the mold closing drive of the mold 20, the production efficiency is improved. Moreover, since the insert 80 is conveyed by the action of the pusher 40 provided in the mold 20, the conveyance of the insert 80 can be controlled only by controlling the mold closing drive of the mold 20. Therefore, the cost for such control is reduced.

Further, according to the insert molding device 10, when the mold 20 is driven to close, the insert 80 fitted to the small diameter side 42 of the stepped portion 41 of the pusher 40 is pressed by the large diameter side 43 of the stepped portion 41. And slides in the through hole 50. As a result, the insert 80 is conveyed to the cavity 38 while maintaining its posture, so that the insert 80 is positioned at a predetermined position in the cavity 38 without damaging the mold 20. Therefore, since an insert molded product in which the insert 80 is accurately embedded can be obtained, the product quality is improved.
Furthermore, according to the insert molding device 10, the pusher 40 is fitted into the through hole 50 and slides when the mold 20 is driven to close the mold. As a result, the movement of the pusher 40 is stabilized, and smooth mold closing drive of the mold 20 is realized.

  Furthermore, according to the insert molding device 10, the insert 80 at the lowermost end among the inserts 80 aligned in the substantially vertical direction and accommodated in the accommodation hole 54 is being guided by the inner wall 52 of the end 51 of the through hole 50. Then, it is guided to the end 51 by the gravitational action. As a result, the insert 80 is automatically supplied to the through-hole 50 and positioned, so that it is not necessary to wait for the mold 20 to be closed for the conveyance of the insert 80, thereby improving the production efficiency.

(Second embodiment)
An insert molding apparatus according to a second embodiment of the present invention is shown in FIGS. Components that are substantially the same as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the insert molding device 100 of the second embodiment, a guide hole 110 is formed that extends straight in a substantially horizontal direction perpendicular to the relative movement direction X of the first plate 22. The guide hole 110 has a rectangular shape in a cross section perpendicular to the axial direction thereof. One end 111 of the guide hole 110 is connected to the end 51 of the through hole 50, and the midway part 112 of the guide hole 110 is connected to the lower end 55 of the accommodation hole 54. That is, in the insert molding device 100, the accommodation hole 54 is not directly connected to the through hole 50, but is displaced in a substantially horizontal direction with respect to the through hole 50. For this reason, the degree of freedom of arrangement of the accommodation holes 54 is high.

A rectangular columnar moving body 120 is fitted in the guide hole 110 so as to be reciprocally slidable on both sides in a substantially horizontal direction corresponding to the axial direction. The moving body 120 is reciprocally driven between a first position shown in FIG. 7A and a second position shown in FIG. 7B by a reciprocating drive mechanism (not shown) controlled by the control unit 68. The moving body 120 is formed with a recess 122 that opens to the upper side and both sides in the width direction. The concave portion 122 has an inner diameter into which the insert 80 can be fitted, the radial direction and the axial direction of which coincide with the vertical direction and the relative movement direction X of the first plate 22. In the first position of FIG. 7A, the recess 122 is located immediately below the accommodation hole 54. Therefore, the insert 80 at the lowermost end among the inserts 80 accommodated in the accommodation hole 54 is automatically fitted into the recess 122 by the gravitational action when the insert 80 does not exist in the recess 122 that reaches just below the insert 80. To do. On the other hand, the concave portion 122 forms the end portion 51 of the through hole 50 at the second position in FIG. Therefore, in this embodiment, the movable body 120 in which the insert 80 is fitted in the recess 122 is driven to the second position by the action of the reciprocating drive mechanism, so that the insert 80 is automatically supplied to the end 51 of the through hole 50. .
As described above, in the present embodiment, the accommodation hole 54, the guide hole 110, and the moving body 120 correspond to the “supply means”, the accommodation hole 54 corresponds to the “holding means”, and the guide hole 110 and the movement body 120 correspond to the “guide means”. The position of the recess 122 in the moving body 120 at the second position corresponds to the “insertion position”.

Next, a characteristic operation of the insert molding apparatus 100 will be described.
In the insert molding apparatus 100, when the mold 20 is completely opened, the movable body 120 is positioned at the first position, and the insert 80 is held in the recess 122. In this state, when the mold closing drive of the mold 20 is started by the control unit 68, the control unit 68 controls the reciprocating drive mechanism to drive the moving body 120 to the second position prior to driving the third plate 26. The end 51 of the through hole 50 is formed by the recess 122 that holds the insert 80. Thereafter, in the same manner as in the first embodiment, the single drive of the third plate 26 and the integrated drive of the third and second plates 26 and 24 are sequentially performed, and the insert 80 subjected to the action of the pusher 40 is moved to the cavity 38. Is positioned at a predetermined position.

  Further, in the insert molding apparatus 100, in the mold opening drive of the mold 20 by the control unit 68, the control unit 68 controls the reciprocating drive mechanism at a predetermined time after the pusher 40 is extracted from the through hole 50. The moving body 120 is driven to the first position. Then, in the accommodation hole 54, the insert 80 at the lowermost end is fitted and held in the empty recess 122 immediately below the insert hole 54, and is prepared for the next molding.

  As described above, according to the insert molding device 100, the insert 80 at the lowermost end among the inserts 80 aligned in the substantially vertical direction and accommodated in the accommodation hole 54 is guided to the concave portion 122 immediately below the accommodation hole 54 by gravity. The displacement of the concave portion 122 reaches the end portion 51 of the through hole 50. Accordingly, the insert 80 is automatically supplied to the through hole 50 and positioned, so that the production efficiency is improved.

(Third embodiment)
An insert molding apparatus according to a third embodiment of the present invention is shown in FIGS. Components that are substantially the same as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the insert molding device 200 according to the third embodiment, a guide hole 210 is formed in which a substantially horizontal direction perpendicular to the relative movement direction X of the first plate 22 is an axial direction. The guide hole 210 is a circular cylindrical hole in a cross section perpendicular to the axial direction. The lowermost portion 211 of the guide hole 210 is connected to the end portion 51 of the through hole 50, and the uppermost portion 212 of the guide hole 210 is connected to the lower end portion 55 of the accommodation hole 54. That is, in the insert molding device 100, the accommodation hole 54 is not directly connected to the through hole 50, but is spaced upward with respect to the through hole 50. For this reason, the degree of freedom of arrangement of the accommodation holes 54 is high.

  A disc-shaped rotating body 220 is fitted in the guide hole 210 so as to be rotatable and slidable about an axis O extending in a substantially horizontal direction coinciding with the axial direction. The rotating body 220 is intermittently rotated around the axis O at equal intervals (here, 60 ° intervals) by a rotation driving mechanism (not shown) controlled by the control unit 68. The rotating body 220 is formed with a plurality of (here, three) concave portions 222 that open to the outer peripheral side and both axial sides. The recesses 222 are arranged at equal intervals around the axis O. Each recess 222 has an inner diameter into which an insert 80 whose radial direction and axial direction substantially coincide with the vertical direction and the relative movement direction X of the first plate 22 can be fitted. In the intermittent rotation position of the rotator 220, as shown in FIG. 9A, any one of the recesses 222 is located immediately below the receiving hole 54, and as shown in FIG. The concave portion 122 also has a second position that is removed from directly below the accommodation hole 54. The first position and the second position appear alternately in the rotation direction R of the rotating body 220.

When the insert 80 does not exist in the recess 222 that reaches the uppermost portion 212 of the guide hole 210 by the rotation of the rotating body 220 to the first position in FIG. 9A, the lowermost end insert in the accommodation hole 54 80 is automatically fitted into the recess 222 by the action of gravity. On the other hand, the concave portion 222 that reaches the lowermost portion 211 of the guide hole 210 by the rotation of the rotating body 220 to the second position in FIG. 9B forms the end portion 51 of the through hole 50. Therefore, in the present embodiment, the rotating body 220 is driven to the second position by the action of the rotation driving mechanism, and the recessed portion 222 into which the insert 80 is inserted reaches the lowermost portion 211 of the guide hole 210, whereby the insert 80 is inserted into the through hole. It is automatically supplied to 50 end portions 51.
As described above, in the present embodiment, the accommodation hole 54, the guide hole 210, and the rotating body 220 correspond to the “supply means”, the accommodation hole 54 corresponds to the “holding means”, and the guide hole 210 and the rotation body 220 correspond to the “guidance means”. The position of the concave portion 222 that reaches the lowermost portion 211 of the guide hole 210 corresponds to the “insertion position”.

Next, a characteristic operation of the insert molding apparatus 200 will be described.
In the insert molding device 200, when the mold 20 is completely opened, the rotating body 220 is positioned at the first position and reaches the uppermost portion 212 of the guide hole 210. The insert 80 is held in a recess 222 located on the front side of the R (hereinafter, the recess 222 is particularly referred to as a recess 222a). In this state, when the mold closing drive of the mold 20 is started by the control unit 68, the control unit 68 controls the rotation drive mechanism to drive the rotating body 220 to the second position prior to driving the third plate 26. Then, the end portion 51 of the through hole 50 is formed by the concave portion 222 a that holds the insert 80. Thereafter, in the same manner as in the first embodiment, the single drive of the third plate 26 and the integrated drive of the third and second plates 26 and 24 are sequentially performed, and the insert 80 subjected to the action of the pusher 40 is moved to the cavity 38. Is positioned at a predetermined position.

  In the insert molding apparatus 200, when the control unit 68 drives the mold 20 to open, the control unit 68 controls the drive mechanism to rotate when the pusher 40 comes out of the through-hole 50. The body 220 is rotationally driven to the first position. Then, the insert 80 at the lowermost end in the accommodation hole 54 is fitted and held in the empty recess 222 reaching the uppermost part 212 of the guide hole 210, and is prepared for subsequent molding.

  As described above, according to the insert molding device 200, the insert 80 at the lowermost end among the inserts 80 aligned in the substantially vertical direction and accommodated in the accommodation hole 54 is guided to the concave portion 222 immediately below the accommodation hole 54 by gravity. The displacement of the recess 222 reaches the end 51 of the through hole 50. Accordingly, the insert 80 is automatically supplied to the through hole 50 and positioned, so that the production efficiency is improved.

Although a plurality of embodiments of the present invention have been described above, the present invention should not be construed as being limited to those embodiments.
For example, in the above-described plurality of embodiments, the example in which the present invention is applied to the insert molding apparatuses 10, 100, and 200 for manufacturing an insert molded product in which one insert 80 is embedded has been described. On the other hand, the present invention may be applied to an insert molding apparatus for manufacturing an insert molded product in which two or more inserts are embedded. In this case, according to the number of inserts, the number of pushers 40, through holes 50, receiving holes 54, the moving body 120 or the recesses 122 of the moving body 120, and the recesses 222 of the rotating body 220 are appropriately set.

  Moreover, in the above-described plurality of embodiments, the example in which the present invention is applied to the insert molding apparatuses 10, 100, and 200 for manufacturing the insert molded product in which the annular insert 80 is embedded has been described. On the other hand, the present invention may be applied to an insert molding apparatus for manufacturing an insert molded product in which inserts of various shapes other than an annular shape are embedded. In any case, the shape of the pusher may be a shape that can press the insert, and is a shape that fits into the insert or a shape that does not fit, depending on the shape of the insert.

  Furthermore, in the above-described embodiments, the first plate 22 as the first mold body integrally formed with the pusher 40 is fixed in position, and the second plate 24 as the second mold body in which the through hole 50 is formed. Is configured to be driven toward and away from the first plate 22. On the other hand, the position of the second plate 24 may be fixed, and the first plate 22 may be driven toward and away from the second plate 24, or the first and second plates 22, 24 may be configured. Both of them may be driven close to each other and driven away from each other.

Furthermore, in the above-described embodiments, the plates 22 and 24 are employed as the first and second mold bodies, but intersect at least one of the first and second mold bodies with respect to the driving direction of the plates. You may employ | adopt the slide core driven to a direction.
Furthermore, in the above-described third embodiment, the concave portion 222 of the rotating body 220 that reaches the lowermost portion 211 of the guide hole 210 is configured to form the end portion 51 of the through hole 50. On the other hand, the concave portion 222 of the rotating body 220 reaching the location excluding the uppermost portion 212 on the outer peripheral edge of the guide hole 210 may be configured to form the end portion 51 of the through hole 50.

It is sectional drawing which shows the insert molding apparatus by 1st embodiment. It is sectional drawing which shows the insert molding apparatus by 1st embodiment. It is sectional drawing which shows the insert molding apparatus by 1st embodiment. It is IV-IV sectional drawing of FIG. It is sectional drawing which shows the insert molding apparatus by 1st embodiment. It is sectional drawing which shows the insert molding apparatus by 2nd embodiment. FIG. 7 is a cross-sectional view illustrating a state in which the moving body of FIG. 6 is localized at a first position (A) and a second position (B), and corresponds to a cross-sectional view taken along the line VII-VII in FIG. It is sectional drawing which shows the insert molding apparatus by 3rd embodiment. It is sectional drawing which shows the state which the rotary body of FIG. 8 localized to the 1st position (A) and the 2nd position (B), Comprising: It is a figure corresponded in IX-IX sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Insert molding apparatus, 20 Mold, 22 1st plate (1st mold body), 24 2nd plate (2nd mold body), 26 3rd plate, 32, 34 type | mold mating surface, 38 cavity, 40 pusher, 41 Stepped portion, 42 Small diameter side, 43 Large diameter side, 50 Through hole, 51 End (feeding means, guiding means), 52 Inner wall (guide wall), 54 Housing hole (holding means), 60 Mold opening / closing device (mold opening / closing) Means), 68 control unit, 70 injection machine, 80 insert, 82 hole, 83 end face, 90 insert molded product, 100 insert molding device, 110 guide hole (supply means, guide means), 120 movable body (supply means, guide) Means), 122 recess, 200 insert molding device, 210 guide hole (supply means, guide means), 220 rotating body (supply means, guide means), 222 (a) recess

Claims (12)

An insert molding apparatus comprising: a mold for forming a cavity for accommodating an insert; and a mold opening / closing means for driving the mold to open and close the mold,
The mold is
A first mold body and a second mold body that are matched by the mold closing drive;
A pusher that protrudes from a mold matching surface of the first mold body with the second mold body in the relative movement direction of the first mold body with respect to the second mold body during the mold closing drive;
A through hole that is formed in the second mold body and extends along the relative movement direction, and connects between the mold matching surface of the second mold body with the first mold body and the cavity;
Have
The insert molding apparatus, wherein the pusher presses the insert supplied to the through hole in the relative movement direction when the mold is closed.   The insert molding apparatus according to claim 1, wherein the through hole is formed in a shape in which the insert is fitted and slid when the mold is closed.   The insert molding apparatus according to claim 1 or 2, wherein the through hole is formed in a shape in which the pusher is fitted and slid when the mold is closed.   The insert molding apparatus according to any one of claims 1 to 3, wherein the through hole is closed by at least one of the insert and the pusher after completion of the mold closing drive.   5. The insert molding device according to claim 1, wherein the pusher is fitted to the insert by a protruding side end portion and presses the insert when the mold is closed. The protruding side end portion forms a stepped portion that decreases in a staircase shape toward the forefront,
In the mold closing drive, the small diameter side of the stepped portion is fitted into the hole portion of the insert, and the large diameter side of the stepped portion is engaged with the outer peripheral side of the hole portion of the insert. The insert molding apparatus according to claim 5.   The insert molding apparatus according to claim 1, further comprising supply means for automatically supplying the insert to the through hole. The supply means includes
Holding means for aligning and holding a plurality of the inserts;
Guiding means for guiding the insert at the extreme end in the alignment direction to a supply position in the through hole;
The insert molding apparatus according to claim 7, comprising: The holding means has an accommodation hole for accommodating a plurality of the inserts aligned in a substantially vertical direction,
9. The insert molding apparatus according to claim 8, wherein the guide means has a guide wall surrounding the supply position immediately below the accommodation hole. The holding means has an accommodation hole for accommodating a plurality of the inserts aligned in a substantially vertical direction,
A concave portion that opens upward is formed, and the guide means includes a moving body that displaces the concave portion between the position immediately below the accommodation hole and the supply position by reciprocating to both sides in a substantially horizontal direction. The insert molding apparatus according to claim 8. The holding means has an accommodation hole for accommodating a plurality of the inserts aligned in a substantially vertical direction,
The guide means has a rotating body that is formed with a recess that opens to the outer peripheral side and that displaces the recess between the position immediately below the receiving hole and the supply position by intermittently rotating about an axis extending in a substantially horizontal direction. The insert molding apparatus according to claim 8. The insert molding device according to any one of claims 1 to 11, wherein the mold is driven to close by the mold opening / closing means, whereby the insert supplied to the through hole is moved to the relative position by the pusher. An insert molding method comprising filling the cavity with a molding material after pressing in the moving direction.

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