CN111204003A - Slide core advancing and retreating mechanism and mold device with same - Google Patents
Slide core advancing and retreating mechanism and mold device with same Download PDFInfo
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- CN111204003A CN111204003A CN201911148195.3A CN201911148195A CN111204003A CN 111204003 A CN111204003 A CN 111204003A CN 201911148195 A CN201911148195 A CN 201911148195A CN 111204003 A CN111204003 A CN 111204003A
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- pin
- axial direction
- insertion hole
- inner member
- slide core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
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- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention provides a slide core advancing and retreating mechanism and a mold device with the same. The slide core advancing and retreating mechanism (42) comprises: a taper pin (40) for sliding the slide core (28); and a guide portion (80) for guiding the taper pin. The guide portion is configured to include an inner member (82) and an outer member (84). A pin insertion hole (86) through which the taper pin is inserted is formed in the inner member, and an inner insertion hole (90) into which the inner member is inserted is formed in the outer member. According to the present invention, even when molding is repeated, the generation of defective operation of the taper pin can be avoided, and therefore, the blind spot can be easily removed from the mold.
Description
Technical Field
The present invention relates to a slide core advancing and retreating mechanism and a mold apparatus having the same.
Background
A mold apparatus for molding a resin molded article having a dead corner portion (undercut portion) such as a bumper (bumper) for an automobile is configured to include a slidable slide core. In this case, as described in japanese patent application laid-open publication No. 2002-0326233, after the resin molded product is obtained, an elongated taper pin (angular pin) connected to the slide core is moved in the axial direction thereof. Accordingly, the slide core can be easily released from the dead space.
From this, the taper pin constitutes the slide core advancing and retreating mechanism. As described in japanese patent application laid-open No. 4414243, the slide core advancing and retracting mechanism has a guide portion (in japanese patent application laid-open No. 4414243, "intermediate unit 10" corresponds to the guide portion) that guides the moving taper pin. The dead space can be removed from the mold by appropriately moving the taper pin by the guide portion.
Disclosure of Invention
In mass production, which is a process for mass production of resin molded articles, it is preferable that the guide portion guide the taper pin in the same direction as much as possible after each molding. This is because so-called malfunction of the slide core can be avoided, and therefore, the dead space can be removed every time molding is completed.
The present invention has been made in order to meet such a demand, and an object thereof is to provide a slide core advancing and retracting mechanism having a guide portion capable of guiding a taper pin in the same direction, and a mold apparatus having the same.
In order to achieve the above object, according to one aspect of the present invention, there is provided a slide core advancing and retreating mechanism having a taper pin which slides a slide core and a guide portion; the guide portion guides the taper pin, and the slide core advancing-retreating mechanism is characterized in that,
the guide part has an inner member and an outer member, wherein the inner member is formed with a pin insertion hole through which the taper pin passes; the outer member is formed with an inner insertion hole into which the inner member is inserted,
an axial direction of the pin insertion hole is inclined with respect to an axial direction of the inner member, and an axial direction of the inner insertion hole is inclined with respect to an axial direction of the outer member,
the axial direction of the inner member and the axial direction of the inner insertion hole are substantially coincident, and the axial direction of the pin insertion hole and the axial direction of the outer member are substantially coincident.
Further, according to another aspect of the present invention, there is provided a mold apparatus having a first molding die, a second molding die, a slide core, and a taper pin, wherein the second molding die is displaced in a direction approaching or separating from the first molding die; the sliding core is used for forming a dead corner part; the angle pin is used for sliding the sliding core when opening the mold, the mold device is characterized in that,
further comprising a slide core advancing and retreating mechanism including a guide portion for guiding the taper pin,
the guide part has an inner member and an outer member, wherein the inner member is formed with a pin insertion hole through which the taper pin passes; the outer member is formed with an inner insertion hole into which the inner member is inserted,
an axial direction of the pin insertion hole is inclined with respect to an axial direction of the inner member, and an axial direction of the inner insertion hole is inclined with respect to an axial direction of the outer member,
the axial direction of the inner member and the axial direction of the inner insertion hole are substantially coincident, and the axial direction of the pin insertion hole and the axial direction of the outer member are substantially coincident.
In the guide portion configured as described above, the inner member is moved while being rotated along the inner insertion hole by relatively moving the inner member with respect to the outer member. Since the axial direction of the inner insertion hole is inclined with respect to the axial direction of the inner member, the axis of the angular pin inserted through the pin insertion hole moves relative to the outer member as the inner member moves. Accordingly, the deviation amount between the position of the axis of the taper pin and the preset design axis position (ideal axis position or direction) can be made within the allowable range.
When the axis of the angular pin forms an angle outside the allowable range with respect to the ideal axis position (angular deviation occurs), the angular deviation is corrected by the above-described rotation. Alternatively, the amount of deviation of the angular deviation can be made within the allowable range by swinging the guide portion.
The guide portion guides the tilt pin having the posture corrected in this manner through the pin insertion hole during molding. As described above, according to the present invention, the posture correction unit that corrects the posture of the kingpin can be used as a guide unit that guides the kingpin.
Further, the guide portion is held by, for example, the first molding die or the second molding die, whereby the guide portion can be prevented from being displaced. Therefore, the taper pin is stable in the corrected posture. That is, the change in the posture of the tilt pin can be prevented. Therefore, the occurrence of a malfunction of the taper pin can be avoided, and the dead angle portion can be easily removed from the mold.
The posture of the angle pin can be maintained even when molding is repeated. Accordingly, the moving directions of the taper pins at the end of each molding are substantially the same. That is, the moving direction of the tilt pin is stable. Therefore, even if the molding is repeated, the operation failure of the taper pin can be prevented, and therefore, the blind spot portion can be removed every time the molding is finished.
The outer peripheral wall of the inner member may be engraved with a first screw portion, and the inner peripheral wall of the inner insertion hole of the outer member may be engraved with a second screw portion that is screwed with the first screw portion. In this case, the inner member can be moved relative to the outer member by rotating the inner member.
In addition, it may be: the outer member is formed with a stopper hole opened in the inner peripheral wall of the inner insertion hole, and a stopper member for positioning the inner member is housed in the stopper hole. Accordingly, the inner member whose position has been adjusted can be prevented from moving further, and the posture of the tilt pin can be stabilized.
According to the present invention, when the posture of the taper pin is corrected by the guide portion including the inner member and the outer member and molding is performed, the taper pin held in the posture is guided by the guide portion. That is, the taper pin is stable in the corrected posture. Therefore, even when the molding is repeated, the occurrence of a malfunction of the taper pin can be avoided. Therefore, the dead space can be easily released.
The above objects, features and advantages can be easily understood by the following description of the embodiments with reference to the accompanying drawings.
Drawings
Fig. 1 is a longitudinal sectional view of a main part of a die apparatus according to an embodiment of the present invention.
Fig. 2 is an enlarged view of a main part of a guide portion constituting the slide core advancing and retreating mechanism included in the mold apparatus of fig. 1.
Fig. 3 is an enlarged view of a main portion showing a state in which the guide portion corrects the misalignment of the taper pin.
Fig. 4 is an enlarged view of a main portion showing a state in which the guide portion corrects the misalignment of the taper pin.
Fig. 5 is an enlarged view of a main portion showing a guide portion configured to include an outer member and an inner member which are not provided with a threaded portion.
Detailed Description
Next, a slide core advancing and retracting mechanism according to the present invention will be described in detail with reference to the accompanying drawings, by taking preferred embodiments as a relation with a mold device having the mechanism. In addition, a mold device obtained by molding a bumper to be mounted on an automobile body as a resin molded product will be exemplified below. In addition, "left", "right", "lower" and "upper" correspond to the left, right, lower and upper in fig. 1.
Fig. 1 is a longitudinal sectional view of a main part of a die apparatus 10 according to the present embodiment. The mold device 10 is for obtaining a bumper BP from a molten resin, and has a fixed mold 12 (first molding die) and a movable mold 14 (second molding die), the movable mold 14 being displaced in a direction approaching or separating from the fixed mold 12. The cavity 16 for obtaining the bumper BP is formed by performing so-called mold closing. The bumper BP has a main body portion 18 and a dead space portion 20.
In this case, the fixed mold 12 is disposed below and the movable mold 14 is disposed above. The fixed mold 12 is positioned and fixed to a floor or the like of a work site, and the movable mold 14 is provided with an actuator (activator). The movable mold 14 is moved up and down by the actuator, approaches the fixed mold 12 as it moves down, and moves away from the fixed mold 12 as it moves up. Since the above-described structure is well known in the art, the illustration and detailed description of the actuator and the like are omitted. The moving die 14 is moved up and down in the direction of arrow a in fig. 1.
An engaging recess 26 is formed in the fixed mold 12, and the engaging recess 26 has a lower portion 22 and a higher portion 24. The slide core 28 is detachably abutted against the engagement recess 26. Specifically, the slide core 28 has a columnar portion 30 and an engaging portion 32, and the engaging portion 32 projects from the right side of the columnar portion 30 in a substantially fan-shaped cross section. When the cavity 16 is formed by closing the mold, the left side surface of the columnar portion 30 abuts against the side wall of the high portion 24, and the bottom surface of the locking portion 32 abuts against the upper surface of the high portion 24.
The fixed mold 12 is provided with a pin receiving hole 34, and the pin receiving hole 34 is continuous with the engaging recess 26 from the lower end surface. The pin receiving hole 34 has an inner diameter closer to the upper end side of the engaging recess 26 set smaller than the lower end side. By forming the small diameter hole 36 accordingly, a stopper portion 38 protruding radially inward is formed. The lower end surface of the columnar portion 30 abuts against the upper end surface of the stopper portion 38.
The axial direction of the columnar portion 30 (the axial direction of the slide core 28) indicated by an arrow B in fig. 1 is inclined at a predetermined angle θ with respect to the lifting direction of the movable mold 14, in other words, the mold opening direction (the arrow a direction). After the mold is opened, the slide core 28 moves upward in the axial direction (direction of arrow B) following the movement of the tilt pin 40 described later, and is thereby disengaged from the engagement recess 26.
The mold apparatus 10 further includes a slide core advancing-retreating mechanism 42 for moving the slide core 28 in a direction of coming into contact with the engaging recess 26 or in a direction of coming out of the engaging recess 26. The slide core advancing-retreating mechanism 42 will be explained.
The upper end portion of the taper pin 40 constituting the slide core advancing and retreating mechanism 42 is coupled to the lower portion of the columnar portion 30 by a screw portion so that the axial direction X of the taper pin 40 substantially coincides with the axial direction (arrow B direction) of the columnar portion 30. The inclined pin 40 is inserted into the pin receiving hole 34, and its lower end portion protrudes downward of the fixed mold 12.
The slide core advancing and retracting mechanism 42 includes a pin moving portion 44, and the pin moving portion 44 is provided outside the fixed mold 12 and moves the tilt pin 40 in the axial direction X. In more detail, the pin moving portion 44 mainly has a movable plate 48, a pair of rail members 50, and a Spherical bush (Spherical bush) 54, wherein the movable plate 48 is formed with a recess 46 on an upper surface thereof; a set of two rail members 50 is disposed within the recess 46; the spherical bush 54 is guided by the rail members 50 of the group together with a bush holder 52. Further, one of a set of rail members 50 is shown in FIG. 1.
The movable plate 48 can be moved up and down in substantially the same direction as the mold opening direction (the direction of arrow a) by an actuator (not shown) different from the above-described actuator. A bolt insertion hole 56 connected to the recess 46 is formed in the lower end surface of the movable plate 48.
The guide hole 58 of the spherical bushing 54 is a through hole passing through the center of the spherical bushing 54, and has a small diameter hole with a smaller inner diameter at a portion below the center and a large diameter hole with a larger inner diameter at a portion above the center. In the guide hole 58, a step 60 is formed based on the difference in inner diameter. The lower end surface of the taper pin 40 is received by the step 60. A coupling bolt 62 is inserted into an opening below the small-diameter hole, and the coupling bolt 62 is screwed into a female screw formed at the lower end of the taper pin 40. By this screwing, the lower end portion of the tilt pin 40 is held by the spherical bush 54. Further, the diameter of the large-diameter hole is substantially the same as the diameter of the taper pin 40.
The bush retainer 52 supports the portion of the outer peripheral surface of the spherical bush 54 other than the vicinity of the opening of the guide hole 58 by a spherical receiving surface. Therefore, the spherical bush 54 can roll so that the guide hole 58 is inclined to face a desired direction.
The pair of rail members 50 slidably hold the bush holder 52 so that the back side and the front side of the sheet of fig. 1 face each other. Note that, in fig. 1, the rail member 50 on the front side of the drawing is not shown, and only the rail member 50 on the back side of the drawing is shown. The rail members 50, 50 are connected to each other via a set of connecting plates 64, and are integrated.
The two rail members 50 are respectively formed with slide grooves 66 extending in the direction of arrow C substantially perpendicular to the axial direction X of the tilt pin 40. The bush holder 52 slides along the slide groove 66. In this manner, the set of rail members 50 slidably retains the bush holder 52.
A bolt stopper hole 68 is formed in a lower end surface of the rail member 50 facing the bottom surface of the recess 46 at a position corresponding to the bolt insertion hole 56. The rail member 50 is fixed to the movable plate 48 by screwing the threaded portion of the mounting bolt 72, which is inserted through the washer (washer)70 and the bolt insertion hole 56, into the threaded portion in the bolt stopper hole 68.
A stopper pin 74 extending toward the right end side of the slide groove 66 is provided at the side wall portion of the recess 46. The rightward movement of the bush holder 52 is stopped by abutting against the stopper pin 74. That is, the stop pin 74 limits movement of the bush holder 52.
A guide portion 80 is provided substantially in the middle of the tilt pin 40 in the longitudinal direction, and the guide portion 80 guides the tilt pin 40 when the posture of the tilt pin 40 is adjusted. The guide portion 80 includes an inner member 82 and an outer member 84, and the outer member 84 is fitted around the outer portion of the inner member 82. The inner member 82 and the outer member 84 form a generally cylindrical shape.
The inner member 82 is formed with a pin through-insertion hole 86 through which the taper pin 40 passes. The diameter of the pin through hole 86 is substantially identical to the diameter of the tilt pin 40. Therefore, when the inner member 82 moves relative to the outer member 84, the tilt pin 40 moves integrally with the inner member 82. On the other hand, a first screw portion 88 is cut in the outer peripheral wall of the inner member 82.
As shown in fig. 2, the axial direction Y1 of the pin insertion hole 86 substantially coincides with the axial direction X of the tilt pin 40, and is tilted at a predetermined angle with respect to the axial direction Y2 of the inner member 82. That is, the axial direction Y1 of the pin insertion hole 86 is not parallel to the axial direction Y2 of the inner member 82.
The outer member 84 is formed with an inner insertion hole 90 into which the inner member 82 is inserted. A second screw portion 92 is engraved on the inner peripheral wall of the inner insertion hole 90. The first screw portion 88 cut in the outer peripheral wall of the inner member 82 is screwed to the second screw portion 92. Therefore, when the outer member 84 is rotated or swung, the inner member 82 and the tilt pin 40 are integrally turned or swung.
The inner member 82 is of a smaller height than the outer member 84. Therefore, by rotating the inner member 82 relative to the outer member 84, the position of the inner member 82 in the inner insertion hole 90 can be variously changed. Further, even if the upper end of the inner member 82 is exposed from the inner insertion hole 90.
The axial direction Z1 of the inner insertion hole 90 is inclined at a predetermined angle with respect to the axial direction Z2 of the outer member 84. That is, the axial direction Z1 of the inner insertion hole 90 is not parallel to the axial direction Z2 of the outer member 84. On the other hand, the axial direction Z1 substantially coincides with the axial direction Y2 of the inner member 82. The axial direction Y1 of the pin insertion hole 86 and the axial direction X of the angular pin 40 substantially coincide with the axial direction Z2 of the outer member 84.
A screw through hole (stopper hole) 94 is formed in the outer member 84, and the screw through hole 94 penetrates from the outer peripheral wall to the inner peripheral wall of the outer member 84 and opens into the inner insertion hole 90. A screw portion is engraved in the vicinity of the opening of the inner peripheral wall side of the screw through hole 94, and a stopper screw 96 as a stopper member is screwed to the screw portion. By rotating the stopper screw 96, the stopper screw 96 can be advanced along the screw through hole 94.
As shown in fig. 1, the guide portion 80 configured as described above is positioned and fixed to the upper surface of the assembly plate 100 via a holding member, not shown. Then, the guide portion 80 is received in the pin receiving hole 34 by holding the assembly plate 100 to the fixed mold 12 via the assembly bolt 102.
The die apparatus 10 according to the present embodiment is basically configured as described above, and the operational effects thereof will be described next.
Before molding of the molten resin, the taper pin 40 is assembled. That is, first, the slide core 28 is temporarily placed in the engaging recess 26 of the fixed mold 12. Specifically, the taper pin 40 coupled to the columnar portion 30 of the slide core 28 is inserted through the pin receiving hole 34 formed in the fixed mold 12. The lower end surface of the columnar portion 30 is brought into contact with the upper end surface of the stopper portion 38, and the bottom surface of the locking portion 32 is brought into contact with the upper surface of the lower portion 22 in the engaging recess 26. At this time, the left side surface of the columnar portion 30 abuts against the side wall of the high portion 24.
Next, the taper pin 40 is passed through the guide portion 80 temporarily supported on the upper surface of the assembly plate 100. That is, the angular pin 40 is inserted into the pin insertion hole 86 of the inner member 82 received in the inner insertion hole 90 of the outer member 84.
On the other hand, the rail member 50 is temporarily attached to the movable plate 48 by the attachment bolt 72. Of course, the rail member 50 is housed in the recess 46. In this case, it is preferable to loosen the screwing degree of the mounting bolt 72 to such an extent that the rail member 50 can be swung by hand.
Next, the lower end portion of the tilt pin 40 is inserted into the guide hole 58 (large diameter hole) formed in the spherical bush 54 in a state where the movable plate 48 is raised to a predetermined position toward the fixed mold 12 and the bush holder 52 is brought into contact with the stopper pin 74. Then, a coupling bolt 62 is inserted through the opening of the small-diameter hole of the guide hole 58 and screwed into a female screw formed at the lower end of the angle pin 40. Accordingly, the ball bushing 54 is coupled to the tilt pin 40.
When the lower end portion of the tilt pin 40 is inserted into the guide hole 58 as described above, the guide hole 58 is tilted in the same direction as the axial direction X of the tilt pin 40. The relative position of the rail member 50 with respect to the movable plate 48 is automatically adjusted by slightly moving the rail member 50 along the bottom surface of the recess 46 of the movable plate 48 such that the axes of the guide hole 58 and the tilt pin 40 coincide with each other.
At this point in time, when the posture of the tilt pin 40 does not match the preset design posture, the posture is corrected using the guide portion 80. That is, for example, as shown in fig. 3, when the axis X of the tilt pin 40 deviates from the ideal axis position IX, the inner member 82 is rotated, for example.
By this rotation, the inner member 82 is displaced within the inner insertion hole 90. When the first screw portion 88 and the second screw portion 92 are normal screws, the inner member 82 descends while rotating within the inner insertion hole 90 when the inner member 82 is rotated clockwise. Since the axial direction Y1 of the pin insertion hole 86 is inclined with respect to the axial direction Y2 of the inner member 82, in this case, the inclined pin 40 moves rightward. On the contrary, when the inner member 82 is rotated counterclockwise, the inner member 82 is raised while being rotated in the inner insertion hole 90, and the tilt pin 40 is moved leftward.
When the first and second screw portions 88 and 92 are reversely threaded, if the inner member 82 is rotated in the clockwise direction, the inner member 82 is raised while being rotated in the inner insertion hole 90, and the tilt pin 40 is moved in the left direction. When the inner member 82 is rotated counterclockwise, the inner member 82 descends while rotating in the inner insertion hole 90, and the tilt pin 40 moves rightward.
Fig. 3 and 4 show a process in which the inner member 82 is raised from the position shown in fig. 3, and the tilt pin 40 is moved leftward to the position shown in fig. 4. As described above, the rotation of the inner member 82 is stopped at the time when the deviation between the axial direction X and the ideal axial position IX falls within the allowable range by moving the tilt pin 40.
As a result, as shown in fig. 4, even when the axial direction X of the tilt pin 40 is tilted at an angle outside the allowable range with respect to the ideal axial position IX (see fig. 3), the angular deviation can be corrected. Alternatively, the guide portion 80 may be swung. Accordingly, the axial direction X of the tilt pin 40 can be substantially aligned with the ideal axial position IX.
After the posture of the tilt pin 40 is corrected in this way, the stopper screw 96 is screwed to the screw portion of the screw through hole 94. The stopper screw 96 advances through the screw through hole 94 with rotation, and as a result, the second threaded portion 92 is recessed to the tip thereof. Accordingly, the inner member 82 can be prevented from further rotation. In other words, the inner member 82 can be prevented from moving further, that is, the inner member 82 and the tilt pin 40 can be prevented from being misaligned. Therefore, the taper pin 40 is stable in the corrected posture.
The guide portion 80 is positioned and fixed on the upper surface of the assembly plate 100, and the assembly plate 100 is coupled to the fixed mold 12 by the assembly bolt 102.
Then, next, the mounting bolt 72 is inserted through the washer 70 and the bolt insertion hole 56, and is screwed into the threaded portion formed in the bolt stopper hole 68 of the rail member 50. By this fastening, the rail member 50 is positioned and fixed to the movable plate 48. As a result, the assembling of the taper pin 40 is completed.
By assembling the angular pin 40 as described above, the angular pin 40, the pin insertion hole 86 of the inner member 82 constituting the guide portion 80, and the guide hole 58 of the spherical bush 54 are centered with high accuracy. Therefore, the tilt pin 40 can smoothly move in the axial direction X thereof.
When the bumper BP is obtained in the mold apparatus 10, as shown in fig. 1, the movable mold 14 is moved close to the fixed mold 12 to close the mold. Then, the molten resin is introduced into the cavity 16 and solidified, and the bumper BP having a shape corresponding to the shape of the cavity 16 is obtained from the molten resin. The bumper BP has a main body 18 and a blind spot 20.
Then, the movable mold 14 is lifted up to open the mold. Subsequently, the movable plate 48 is raised toward the stationary mold 12. Accordingly, the bush holder 52 moves diagonally upward and rightward along the extending direction (arrow C direction) of the slide groove 66 while making sliding contact with the slide groove 66 formed in the rail member 50. As the movable plate 48 is thus raised and the bush holder 52 is moved diagonally upward and rightward, the tilt pin 40 and the slide core 28 are integrally moved in the axial direction X of the tilt pin 40. That is, the tilt pin 40 and the slide core 28 ascend obliquely upward to the left. As a result, the slide core 28 is disengaged from the engagement recess 26, and the bumper BP is disengaged from the fixed mold 12 together with the slide core 28. That is, the bumper BP is demolded.
At this time, the angular pin 40 slides in the pin insertion hole 86 while being guided along the axial direction X1 of the pin insertion hole 86. Here, the guide portion 80 is positioned and fixed to the assembly plate 100. Therefore, the guide portion 80 is effectively prevented from being displaced in the pin accommodating hole 34. The inner member 82 constituting the guide portion 80 is positioned and fixed by a stopper screw 96. In combination with the above, since the tilt pin 40 can be prevented from changing from the corrected posture, the tilt pin 40 can be moved in the design direction. Therefore, the dead space 20 can be released from the mold by suppressing the malfunction that the slide core 28 does not come off from the engagement recess 26.
That is, in this case, the posture correction unit that corrects the posture of the kingpin 40 may function as the guide unit 80 that guides the kingpin 40 during molding. The guide portion 80 is also simply configured by combining the inner member 82 and the outer member 84. As described above, according to the present embodiment, although the configuration is simple, the guide portion 80 having both the posture correcting function and the guiding function is provided. Therefore, the number of components can be reduced and the structure can be simplified.
The bumper BP can be continuously manufactured by repeating the lowering and closing of the slide core 28, the lead-out of the molten resin into the cavity 16, the opening of the mold, and the raising of the slide core 28. As described above, since the guide portion 80 is prevented from being displaced, the taper pins 40 are guided in substantially the same direction when continuously molding. Therefore, the moving direction of the slide core 28 can be kept substantially the same. Accordingly, the blind spot portion 20 can be released every time molding is completed.
The present invention is not particularly limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
For example, the slide core 28 may be provided on the movable mold 14.
In addition, the resin molded article is not particularly limited to the bumper BP as long as it has the dead-angle portion 20.
Further, the second screw portion 92 is not necessarily provided in the inner insertion hole 90 of the outer member 84, and the first screw portion 88 is not necessarily provided in the outer peripheral wall of the inner member 82, but the guide portion 110 may be configured by fitting the inner member 82 into the inner insertion hole 90, as shown in fig. 5.
Claims (6)
1. A slide core advancing-retreating mechanism (42) has a taper pin (40) for sliding a slide core (28) and a guide portion (80); the guide portion is used for guiding the taper pin, and the slide core advancing and retreating mechanism is characterized in that,
the guide portion has an inner member (82) and an outer member (84), wherein the inner member is formed with a pin insertion hole (86) through which the oblique pin passes; the outer member is formed with an inner insertion hole (90) into which the inner member is inserted,
an axial direction (Y1) of the pin insertion hole is inclined with respect to an axial direction (Y2) of the inner member, and an axial direction of the inner insertion hole is inclined with respect to an axial direction (Z1) of the outer member,
the axial direction of the inner member and the axial direction of the inner insertion hole are substantially coincident, and the axial direction of the pin insertion hole and the axial direction (Z2) of the outer member are substantially coincident.
2. The sliding core advancing-retreating mechanism according to claim 1,
a first screw portion (88) is formed on the outer peripheral wall of the inner member, and a second screw portion (92) which is screwed to the first screw portion is formed on the inner peripheral wall of the inner insertion hole of the outer member.
3. The slide core advancing-retreating mechanism according to claim 1 or 2,
a stopper hole (94) that opens on the inner peripheral wall of the inner insertion hole is formed in the outer member, and a stopper member (96) for positioning the inner member is housed in the stopper hole.
4. A mold device (10) having a first molding die (12), a second molding die (14), a slide core (28), and a taper pin (40), wherein the second molding die is displaced in a direction approaching or separating from the first molding die; the sliding core is used for molding a dead corner part (20); the angle pin is used for sliding the sliding core when opening the mold, the mold device is characterized in that,
further comprising a slide core advancing and retreating mechanism (42) including a guide portion (80) for guiding the taper pin,
the guide portion has an inner member (82) and an outer member (84), wherein the inner member is formed with a pin insertion hole (86) through which the oblique pin passes; the outer member is formed with an inner insertion hole (90) into which the inner member is inserted,
an axial direction (Y1) of the pin insertion hole is inclined with respect to an axial direction (Y2) of the inner member, and an axial direction of the inner insertion hole is inclined with respect to an axial direction (Z1) of the outer member,
the axial direction of the inner member and the axial direction of the inner insertion hole are substantially coincident, and the axial direction of the pin insertion hole and the axial direction (Z2) of the outer member are substantially coincident.
5. The mold device according to claim 4,
a first screw portion (88) is formed on the outer peripheral wall of the inner member, and a second screw portion (92) that is screwed to the first screw portion is formed on the inner peripheral wall of the inner insertion hole of the outer member.
6. The mold device according to claim 4 or 5,
a stopper hole (94) that opens on the inner peripheral wall of the inner insertion hole is formed in the outer member, and a stopper member (96) for positioning the inner member is housed in the stopper hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-218201 | 2018-11-21 | ||
| JP2018218201A JP6802830B2 (en) | 2018-11-21 | 2018-11-21 | Slide core advance / retreat mechanism and mold device equipped with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111204003A true CN111204003A (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911148195.3A Pending CN111204003A (en) | 2018-11-21 | 2019-11-21 | Slide core advancing and retreating mechanism and mold device with same |
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| Country | Link |
|---|---|
| JP (1) | JP6802830B2 (en) |
| CN (1) | CN111204003A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139457B (en) * | 2020-09-11 | 2022-05-27 | 深圳市飞荣达科技股份有限公司 | Forming die is used in antenna element processing |
| JP7313399B2 (en) * | 2021-06-14 | 2023-07-24 | 三菱電線工業株式会社 | Mold and molding method of molded product |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005212305A (en) * | 2004-01-30 | 2005-08-11 | Honda Motor Co Ltd | Method for attaching core supporting rod of resin molding mold device and attaching structure |
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2018
- 2018-11-21 JP JP2018218201A patent/JP6802830B2/en not_active Expired - Fee Related
-
2019
- 2019-11-21 CN CN201911148195.3A patent/CN111204003A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005212305A (en) * | 2004-01-30 | 2005-08-11 | Honda Motor Co Ltd | Method for attaching core supporting rod of resin molding mold device and attaching structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020082450A (en) | 2020-06-04 |
| JP6802830B2 (en) | 2020-12-23 |
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Application publication date: 20200529 |