JP2005335339A - Insert mold apparatus and insert mold attaching method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve workability and reduction of working labor and man-hour (improvement of working efficiency), enable easy positioning (adjustment), and exactly prevent an insert mold and a hot runner portion from being flawed. <P>SOLUTION: The insert mold apparatus has an insert mold portion 2, a mold base portion 3 supporting the insert mold portion 2, and a hot runner portion 4 mounted in the mold base portion 3 for a part of the tip 4p to be inserted into a fixed insert mold 2c of the insert mold portion 2. There is mounted a supporting surface relative displacement means 5 relatively displacing the supporting surface Kcs of the fixed base portion 3c of the mold base portion 3 supporting the fixed insert mold 2c from the insert position Xi where at least the hot runner portion 4 is inserted in the fixed insert mold 2c to the non-insertion position Xf where the hot runner portion 4 is removed from the fixed insert mold 2c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a telescopic mold apparatus and a telescopic mold mounting in which a tip part of a hot runner provided in the base of the mold is inserted into the telescopic mold when the telescopic mold is attached to the base of the mold. Regarding the method.

  2. Description of the Related Art Conventionally, a mold apparatus used for a molding machine such as an injection molding machine, the entire mold apparatus is divided into a nested mold part having a cavity and a mold base part that supports the nested mold part. Nesting mold that can obtain the cost merit of a mold device having a cavity such as a single-piece by using a common mold base and exchanging only the nested mold part when changing molds Mold devices are known.

For example, Japanese Patent Application Laid-Open No. 2001-30300 discloses a hot runner portion fixed to a stationary platen of a molding machine, and a fixed side mold and a movable side die that use this hot runner portion in common and constitute a cavity. The molded part having a detachable and detachable, and sequentially molding the molded products having different cavities, one of the molded parts is fixed to the movable side platen, the other fixed side mold, An injection mold apparatus that is fixed to a hot runner portion with a fixing screw is disclosed, and Japanese Patent Application Laid-Open No. 2003-154548 is detachable from a mother mold in a direction intersecting the resin flow path. A hot runner cassette fitted to the mold, a cassette mold detachably attached to the mother mold on the resin discharge side of the hot runner cassette, and a locking means for latching the cassette mold to the mother mold. Cassette-type hot runner mold is disclosed.
JP 2001-30300 A JP 2003-154548 A

  However, the conventional nested mold apparatus described above has the following problems.

  First, when the hot runner part is provided in the mold base, the tip part of the hot runner part is inserted into the nested mold part, so the mounting work of the nested mold part on the mold base becomes difficult. In addition to a decrease in workability, an increase in work labor and an increase in work man-hours (a decrease in work efficiency), positioning (adjustment) and the like cannot be easily performed.

  Second, in addition to the complicated mounting path of the insert mold part, the clearance between the insertion hole provided in the insert mold part and the hot runner part is small, so the insert mold part is hot. The insert mold part and the hot runner part are easily damaged by colliding with the runner part or the like, or applying unnecessary stress to the hot runner part.

  An object of the present invention is to provide a telescopic mold apparatus and a telescopic mold mounting method that solve the problems in the background art.

  The telescoping mold device 1 according to the present invention includes a telescoping mold part 2, a mold base 3 that supports the telescoping mold part 2, and a tip part 4p provided on the mold base 3. Is a nesting mold apparatus having a hot runner portion 4 to be inserted into the stationary nesting die 2c in the nesting die portion 2, wherein the stationary base portion 3c of the dies base portion 3 supporting the stationary nesting die 2c. Support surface relative displacement means 5 for relatively displacing the support surface Kcs to at least an insertion position Xi where the hot runner portion 4 is inserted into the stationary insert mold 2c and a non-insertion position Xf where the hot runner portion 4 is detached from the fixed insert mold 2c. Is provided.

  In this case, according to a preferred aspect of the invention, the support surface relative displacement means 5 has a support surface Kcs and is movable in the advancing / retreating direction Ff with respect to the fixed base 3c, and further, An urging member 7 that urges the mold exchange plate 6 in a direction away from the hot runner part 4 and a stopper part 8 that restricts the position of the mold exchange plate 6 when displaced can be configured. Moreover, the lock part 9 which fixes the metal mold | die exchange plate 6 to the insertion position Xi can be provided.

  Further, in the telescopic die mounting method according to the present invention, the tip end portion 4p of the hot runner portion 4 provided on the fixed base portion 3c in the die base portion 3 is inserted into the fixed telescopic die 2c in the telescopic die portion 2. When the fixed insert 2c is attached to the fixed base 3c in the state, the support surface Kcs of the fixed base 3c that supports the fixed insert 2c is moved to the non-insertion position Xf where the hot runner 4 is detached from the fixed insert 2c. After the relative displacement, the fixed telescopic mold 2c is advanced to the supported position Ps along the support surface Kcs, and the fixed telescopic mold 2c is fixed to the support surface Kcs at the supported position Ps. It is characterized in that Kcs is relatively displaced to the insertion position Xi where the hot runner portion 4 is inserted into the stationary insert mold 2c.

  In this case, according to a preferred aspect of the invention, the support surface Kcs can be provided on the mold exchanging plate 6 that is displaceable in the forward / backward direction Ff with respect to the fixed base 3c. When the fixed insert mold 2c is advanced to the supported position Ps, a guide jig 11 that is attached to and detached from the support surface Kcs is attached to the support face Kcs, and the fixed insert mold 2c is attached to the guide jig 11. The upper surface can be slid to enter.

  According to the telescopic mold apparatus 1 and the telescopic mold mounting method according to the present invention, the following remarkable effects can be obtained.

  (1) At the time of mounting the fixed telescopic mold 2c, the hot runner portion 4 can be relatively displaced to the non-insertion position Xf that is detached from the fixed telescopic mold 2c, so that the mounting operation of the fixed telescopic mold 2c becomes easy. It is possible to improve workability, further reduce work labor and work man-hours (improve work efficiency), and easily perform positioning (adjustment) and the like.

  (2) Since the mounting path and the mounting operation of the fixed insert mold 2c can be simplified, the fixed insert mold 2c may collide with the hot runner portion 4 or the like, or unnecessary stress may be applied to the hot runner portion 4. This can be avoided, and it is possible to reliably prevent the fixed telescopic mold 2c and the hot runner portion 4 from being damaged.

  (3) According to a preferred embodiment, if the die replacement plate 6 having the support surface Kcs and being displaceable in the forward / backward direction Ff with respect to the fixed base 3c is used as the support surface relative displacement means 5, the hot runner portion 4 In this state, the relative displacement of the hot runner portion 4 to the non-insertion position Xf, that is, the relative displacement for separating the hot runner portion 4 from the fixed insert mold 2c can be realized easily and smoothly.

  (4) According to a preferred embodiment, a biasing member 7 for biasing the mold exchanging plate 6 in a direction away from the hot runner part 4 and a stopper portion 8 for regulating the position of the mold exchanging plate 6 at the time of displacement can be provided. That is, simultaneously with the mold opening / closing operation, the relative displacement of the hot runner portion 4 can be automatically performed, which contributes to further improvement in workability and workability.

  (5) According to a preferred embodiment, when the stationary insert mold 2c is advanced to the supported position Ps, a guide jig 11 that is attached to and detached from the support surface Kcs is attached to the support surface Kcs, and the fixed insert mold 2c is attached. If the upper surface of the guide jig 11 is slid to enter, it can contribute to further improvement of workability and workability, and can contribute to further improvement of work labor and work man-hours.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

  First, the structure of the nested mold apparatus 1 which concerns on this embodiment is demonstrated with reference to FIGS.

  The basic structure of the telescopic mold apparatus 1 is that the telescopic mold part 2, the base part 3 for supporting the telescopic mold part 2, and the base part 3 are provided at the front end. The part 4p includes a hot runner part 4 to be inserted into the telescopic mold part 2. In this case, the telescopic mold part 2 is configured by a combination of a fixed telescopic mold 2c and a movable telescopic mold 2m, and the mold base 3 is configured by a combination of a fixed base 3c and a movable base 3m.

  The fixed base 3 c includes a base plate 21, an intermediate plate 22, and a mold exchange plate 6. The base plate 21 and the intermediate plate 22 constitute an integrated base body 3o by overlapping. Then, one end of three guide rods 23 (see FIG. 2) penetrating the base body 3o is fixed at three positions near the corner of the base body 3o, the lower left and right positions and the upper left position. Then, the other end is protruded from the base body 3o in a direction perpendicular to the surface, and a die replacement plate 6 whose front end surface serves as a support surface Kcs for supporting a fixed insert mold 2c described later is slid on the guide rod 23. Load freely. In addition, 24 ... is a guide bush provided between each guide rod 23 ... and the metal mold | die exchange plate 6. FIG. As a result, the mold exchanging plate 6 constitutes the support surface relative displacement means 5 and can be displaced in the direction of the arrow Ff which is the advancing / retreating direction with respect to the base body 3o.

  Further, the hot runner portion 4 is held between the base plate 21 and the intermediate plate 22. That is, the hot runner portion 4 is sandwiched between the base plate 21 and the intermediate plate 22 so as to be assembled together. In this case, the tip end portion 4 p of the hot runner portion 4 protrudes a predetermined length from the front end surface of the intermediate plate 22, and the nozzle touch portion 4 c provided at the rear end of the hot runner portion 4 is on the rear end surface of the base plate 21. Arranged. In FIG. 1, the phantom line indicates the injection nozzle Min provided at the front end of the injection device Mi, and the nozzle touch portion 4c faces the injection nozzle Min. As shown in FIG. 3, the hot runner portion 4 includes a runner block 41 having a resin passage 41r therein, and a first heater 42 and a second heater 43 are incorporated in the resin passage 41r. Thereby, the resin in the hot runner part 4 is always kept in a molten state.

  Further, the upper and lower portions (see FIG. 2) of the base main body 3o are provided with urging members 7 for urging the mold exchange plate 6 in a direction away from the hot runner 4 and when the mold exchange plate 6 is displaced. Stopper portions 8 for restricting the position are arranged. In this case, the stopper portion 8 uses a pin member 8p having a large-diameter locking head portion 8s at one end, and the other end side of the pin member 8p is inserted into the mold replacement plate 6, and further, the pin member After 8p is loaded with the spring 7s constituting the biasing member 7, the other end of the pin member 8p is fixed to the base body 3o. The base body 3o has a housing recess 25 for housing the spring 7s, and the spring 7s is interposed between the mold replacement plate 6 and the base body 3o in a compressed state.

  Thereby, if the mold replacement plate 6 is pressed against the base body 3o and moved against the elasticity of the spring 7s, the mold replacement plate 6 can be superimposed on the base body 3o (intermediate plate 22). In this state, the hot runner portion 4 is completely inserted into the insertion hole of the fixed telescopic mold 2c. And the position of this metal mold | die exchange plate 6 (support surface Kcs) becomes a set position (insertion position Xi). The spring 7s at the set position is accommodated in the accommodating recess 25. On the other hand, in a natural state in which the pressure on the mold exchange plate 6 is released, the mold exchange plate 6 is separated from the base body 3o (intermediate plate 22) by the elastic force (biasing force) of the spring 7s. And the position of the stopper portion 8 is restricted by being locked to the locking head portion 8s. In this state, the hot runner portion 4 is completely detached from the fixed telescopic mold 2c. The position of the mold replacement plate 6 (support surface Kcs) is the mold replacement position (non-insertion position Xf). Therefore, in particular, the length of the pin member 8p is selected so that the insertion position Xi and the non-insertion position Xf can be obtained.

  Further, lock portions 9... For fixing the die replacement plate 6 at the insertion position Xi are disposed at two positions (see FIG. 2) on the upper and lower sides of the fixed base 3c. The lock unit 9 includes a support base 26 having one end fixed to the base body 3o, and a lock body 27 that is rotatably attached to the upper end of the support base 26 so that the rotation angle range is 90 °. As shown in FIGS. 5A and 5B, the lock body 27 is formed in a prismatic shape whose end face is rectangular, and two operation rods 28 project from the end face. On the other hand, the mold exchanging plate 6 facing the lock body 27 is provided with an opening 29 having a similar shape to the end face of the lock body 27.

  Accordingly, when the lock body 27 is at a position (angle) at which the lock body 27 can be inserted into the opening 29, that is, at the unlocking position Xr shown in FIG. 5A, the lock body 27 is inserted into the opening 29. Therefore, the die replacement plate 6 can be freely displaced between the insertion position Xi and the non-insertion position Xf. On the other hand, by moving the mold exchanging plate 6 to the insertion position Xi and rotating the lock body 27 by 90 °, that is, to the lock position Xc shown in FIG. If 27 is locked to the support surface Kcs of the mold exchange plate 6, the mold exchange plate 6 can be fixed at the insertion position Xi. Accordingly, in particular, the length of the support base 26 is selected so as to ensure such a function.

  The positions of the stopper portions 8, the lock portions 9, and the guide rods 23 shown in FIG. 1 are drawn so as to be easily understood, but the actual positional relationship is shown by a virtual line in FIG. 2. Arranged.

  On the other hand, the support surface Kcs of the mold exchanging plate 6 can detachably support the stationary insert mold 2c. For this reason, the first restriction block 31 for positioning in the X direction and the second restriction block 32 for positioning in the Z direction are attached to the support surface Kcs, and are restricted by the first restriction block 31 and the second restriction block 32. A clamp portion 33 is disposed at the corner opposite to the diagonal line passing through the corner. The clamp portion 33 includes a clamp body 34 having an inclined surface 34s formed at the tip thereof, a pair of guides 35 for slidably guiding the clamp body 34 in the forward / backward direction, and a nut plate 36 fixed between both guides 35 ... An operation screw 37 is provided that is screwed into the nut plate 36 and has a tip rotatably coupled to a rear end of the clamp body 34.

  The fixed insert mold 2c is formed in a rectangular parallelepiped shape as a whole, and has a cavity 2cc on the front end face and a gate 2cg for connecting the cavity 2cc and the hot runner portion 4 in communication. Further, the fixed telescopic die 2c has a plurality of (four in the illustrated example) engagement bearing portions 61 that are open on the front end surface, and a supported position Ps that contacts the first restriction block 31 and the second restriction block 32. In the corner of the clamp body 34 facing the inclined surface 34s, there is an inclined surface 2cs parallel to the inclined surface 34s.

  Accordingly, when the operation screw 37 is turned, the clamp body 34 is moved up and down, the raised position (see FIG. 9) becomes the clamp release position, and the lowered position shown in FIG. 2 becomes the clamp position. Then, the inclined surface 34s of the clamp body 34 abuts on the inclined surface 2cs of the fixed telescopic mold 2c. In addition, the clamp part 33, the 1st control block 31, and the 2nd control block 32 have not only the fixing function (positioning function) with respect to the fixed insert type | mold 2c but the position adjustment function with respect to a X direction, a Y direction, and a Z direction. ing.

  On the other hand, the movable base 3m can slide with respect to the guide rods 23 through bushes 51. The movable base 3m is constituted by a single movable plate 50, and the front end surface (the surface facing the support surface Kcs) is a support surface Kms that supports the movable telescopic mold 2m. Therefore, this support surface Kms can detachably support the movable telescopic mold 2m. For this reason, the first restriction block 53 (see FIG. 7D) for positioning in the X direction and the second restriction block 54 for positioning in the Z direction are attached to the support surface Kms. A clamp portion 55 is disposed at the corner opposite to the diagonal line passing through the corner regulated by the second regulating block 54. In addition, the structure and function of this clamp part 55 are the same as the clamp part 33 in the fixed base 3c side mentioned above.

  Further, the movable telescopic mold 2m is formed in a rectangular parallelepiped shape as a whole, and a plurality (examples) of the front end face (surface facing the support surface Kcs) are inserted through the engagement bearing portions 61 on the fixed telescopic mold 2c side. Have four engaging shaft portions 62... And an inclined surface 2 ms similar to the inclined surface 2 cs on the fixed nested die 2 c side is formed at the corner of the movable nested die 2 m. In addition, the clamp part 55, the 1st control block 53, and the 2nd control block 54 are not only a fixed function (positioning function) with respect to the movable telescopic mold 2m but the X direction and the Y direction as well as the fixed telescopic mold 2c side. And a position adjusting function for the Z direction.

  Next, referring to the flowcharts shown in FIGS. 6 and 7 with reference to FIG. 8 and each drawing, with respect to the method of attaching the insert mold (insertion mold exchanging method) in the insert mold apparatus 1 according to the present embodiment. To explain.

  First, when the nested mold part 2 is attached to the mold base 3, the attached nested mold part 2 is removed. Now, as shown in FIG. 8A, it is assumed that the insert mold part 2 before replacement is attached to the mold base part 3 and is in a mold-closed state. In this state, the lock portion 9 is operated to unlock the die replacement plate 6 (step S1). In the locked state, the lock body 27 in the lock portion 9... Is in a position orthogonal to the opening portion 29 and is locked to the mold exchanging plate 6 as shown in FIG. Therefore, when the lock is released, the lock body 27 is turned 90 ° by the operation of the operation rod 28. As a result, the lock body 27 can be inserted through the opening 29 as shown in FIG.

  Next, as shown in FIG. 8B, the movable plate 50 is moved in the direction of the arrow Ffo to perform mold opening (step S2). The movable plate 50 is attached to a movable platen in a mold clamping device (not shown) and can be moved to a fully open position along a tie bar (not shown). As the movable plate 50 moves in the mold opening direction (arrow Ffo direction), the unlocked mold replacement plate 6 is automatically in the mold opening direction (arrow Ffo direction) by the elastic force (biasing force) of the spring 7s. And the position is restricted by being engaged with the engagement head 8s of the stopper portion 8 (step S3). FIG. 8B shows this state, and the position of the mold exchanging plate 6 (support surface Kcs) is a non-insertion position Xf where the hot runner portion 4 is completely detached from the stationary insert mold 2c. .

  Then, the insert mold part 2, that is, the fixed insert mold 2c and the movable insert mold 2m are exchanged. First, the fixed telescopic mold 2c is exchanged (step S4). The flowchart shown in FIG. 7 shows the replacement procedure of the fixed telescopic mold 2c (and the movable telescopic mold 2m). First, a separately prepared guide jig 11 is set (step S11). The guide jig 11 is a jig for assisting the replacement work of the insert mold part 2 and has a horizontal guide surface on the upper surface 11u. In addition, a pair of upper and lower mounting pins 72 are provided on both the fixed telescopic mold 2c side and the movable telescopic mold 2m of the guide jig 11, and these mounting pins 72 are shown in FIG. Further, the guide jig 11 can be easily set by inserting it into a pair of upper and lower mounting holes 71 provided on the support surface Kcs of the mold exchanging plate 6. It should be noted that the height (position) of the guide jig 11 at the time of mounting coincides with the height of the first restriction block 31 and is arranged in the vicinity of the first restriction block 31, in particular, at each of the mounting holes 71. The position is selected.

  Subsequently, the operation screw 37 of the clamp part 33 is turned and operated, and the clamp body 34 is displaced to the raised position shown in FIG. 9 (step S12). Thereby, as shown in FIG.8 (c), the fixed nest type | mold 2c can be moved to the arrow Fpo direction. In this case, since a handle (not shown) is provided on the side surface of the fixed telescopic mold 2c, the upper surface of the first restriction block 31 and the guide jig are fixed by holding the grip by hand and pulling the fixed telescopic mold 2c. The upper surface 11u of the tool 11 can be slid and the fixed telescopic die 2c can be detached (taken out) very easily (step S13). FIG. 9 shows the detached state.

  On the other hand, when the separation is completed, a new fixed telescopic die 2c to be replaced is placed on the upper surface 11u of the guide member 11 (step S14). Then, the fixed telescopic mold 2c is pushed in the direction opposite to the arrow Fpo direction shown in FIG. 8C, and is slid to the supported position Ps that comes into contact with the second restriction block 32 (step S15). Thereafter, the operation screw 37 of the clamp portion 33 is turned to operate, and the clamp body 34 is displaced to the clamp position, that is, the lowered position shown in FIG. 2, thereby clamping (fixing) the fixed telescopic mold 2c (step S16, S17). In this case, at the time of fixing by the clamp part 33, the position of the clamp part 33 and further the first restriction block 31 and the second restriction block 32 are adjusted so that the X, Z and Y directions with respect to the fixed telescopic mold 2 c are adjusted. Adjust the position. When the fixed insert mold 2c is fixed (clamped), the guide jig 11 is removed (step S18). Thereby, the replacement | exchange process with respect to the fixed nest type | mold 2c is complete | finished.

  Next, the movable telescopic mold 2m is exchanged (step S5). The movable nested mold 2m can be replaced in the same manner as the replacement of the fixed nested mold 2c in accordance with steps S11 to S18 of the flowchart shown in FIG. FIG. 8D shows a state of replacement in the movable telescopic mold 2m, and the new movable telescopic mold 2m to be replaced is placed on the upper surface 11u of the guide member 11 and moved in the direction of the arrow Fps. The states of steps S14 and S15 to be moved are shown.

  When the replacement process for the movable telescopic mold 2m is completed, the movable plate 50 is moved to close the mold (step S6). In this case, the movable plate 50 shown in FIG. 8B is moved in the direction of the arrow Ffs. When the mold is closed, the movable plate 50 is moved along the tie bar (not shown) to the mold closing position. At this time, the movable plate 50 moves in the mold closing direction (arrow Ffo direction), so that the movable telescopic mold 2m comes into contact with the fixed telescopic mold 2c during the mold closing. As a result, the fixed telescopic mold 2c is pushed by the movable telescopic mold 2m, and the mold exchanging plate 6 moves in the direction of the arrow Ffs against the elastic force (biasing force) of the spring 7s, and also contacts the base body 3o. It stops at the set position where it comes into contact (step S7). This state is shown in FIG. The mold exchanging plate 6 at this set position is an insertion position Xi where the hot runner portion 4 is completely inserted into the stationary insert mold 2c. Thus, in the present embodiment, the spring 7s that urges the mold replacement plate 6 in the direction away from the hot runner section 4 and the stopper section 8 that regulates the position when the mold replacement plate 6 is displaced are provided. Simultaneously with the mold opening / closing operation, the movement of the mold exchanging plate 6 (relative displacement of the hot runner portion 4) is automatically performed, which contributes to further improvement in workability and workability.

  Thereafter, each of the lock portions 9 is operated to lock the die replacement plate 6 (step S8). In this case, the lock body 27 of the lock portion 9 is rotated and displaced by 90 °, that is, as shown in FIG. 5B, to an angle orthogonal to the opening portion 29. As a result, the lock body 27 is engaged with the support surface Kcs of the mold exchange plate 6 and the mold exchange plate 6 is locked. Through the above steps, the replacement of the nested mold part 2 attached to the mold base 3 is completed.

  Thus, according to the telescopic mold apparatus 1 and the telescopic mold mounting method according to the present embodiment, when the fixed telescopic mold 2c is mounted, the hot runner portion 4 is detached from the fixed telescopic mold 2c. Since it can be relatively displaced to the position Xf, the mounting operation of the fixed telescopic die 2c is facilitated, and the workability is improved, and further, the work labor and the work man-hour (improvement of work efficiency) are reduced. In addition, the positioning (adjustment) and the like can be easily performed. Further, since the mounting path and the mounting work of the fixed insert mold 2c can be simplified, it is possible to avoid the problem that the fixed insert mold 2c collides with the hot runner portion 4 or the like, or unnecessary stress is applied to the hot runner portion 4. Thus, it is possible to reliably prevent the fixed telescopic mold 2c and the hot runner portion 4 from being damaged. In particular, as the support surface relative displacement means 5, the support surface relative displacement means 5 having a support surface Kcs and using a mold exchanging plate 6 that is displaceable in the forward / backward direction Ff with respect to the mold base 3 is used. Advantages of easily and smoothly realizing relative displacement of the hot runner portion 4 to the non-insertion position Xf, that is, the relative displacement for detaching the hot runner portion 4 from the fixed insert mold 2c, with the mounting state of the hot runner portion 4 as it is. There is. Further, when the fixed insert mold 2c is advanced to the supported position Ps, a guide jig 11 that is attached to and detached from the support surface Kcs is attached to the support face Kcs, and the fixed insert mold 2c is attached to the guide jig 11. Since the upper surface is slid to enter, there is an advantage that it is possible to contribute to further improvement of workability and workability, and further improvement of work labor and man-hours.

  As described above, the best embodiment has been described in detail. However, the present invention is not limited to such an embodiment, and the detailed configuration, shape, quantity, and the like are within the scope not departing from the gist of the present invention. It can be changed, added, or deleted arbitrarily.

  For example, the illustrated embodiment shows a nested mold apparatus 1 using a nested mold part 2 having a so-called single-cavity 2cc, but as shown in FIG. Can also be applied to the nested mold apparatus 1 using the nested mold part 2 having the cavities 2cca and 2ccb. In this case, the hot runner portion 4 can be realized by providing two branch runner portions 4pa and 4pb branched by the branch portion. Other configurations and functions are the same as those of the telescopic mold apparatus 1 shown in FIG. Therefore, in FIG. 10, the same parts as those in FIG. 1 are denoted by the same reference numerals to clarify the configuration, and detailed description thereof is omitted.

  On the other hand, the illustrated embodiment shows the support surface relative displacement means 5 having the support surface Kcs and including the mold replacement plate 6 that is displaceable in the forward / backward direction Ff with respect to the fixed base 3c. The fixed telescoping die 2c may be directly attached to the base body 3o without using the plate 6, and the hot runner portion 4 may be displaced with respect to the mold base 3. The support surface relative displacement means 5 is used for such a hot runner. It does not exclude the configuration that allows the portion 4 to be directly displaced. Further, the urging member 7, the stopper portion 8, the lock portion 9, and the guide member 11 may adopt other forms, and these are not necessarily provided. For example, the lock unit 9 may be a known form such as a bolt.

Sectional side view in the non-insertion position of the telescopic mold apparatus according to the best embodiment of the present invention, Front end view of the mold replacement plate with the fixed insert mold attached in the insert mold apparatus, A cross-sectional side view of a hot runner part in the insert mold apparatus, Cross-sectional side view at the insertion position of the insert mold device, Front end view of the lock part in the insert mold device, A flowchart for explaining the entire mold exchanging method in the insert mold apparatus, A flow chart for explaining a replacement procedure of a fixed telescopic mold (movable telescopic mold) in the telescopic mold apparatus; Explanatory drawing which shows each process of the metal mold | die exchange method in the same insert mold apparatus, Front end view of the mold replacement plate in a state where the fixed insert mold is removed from the insert mold apparatus, The principle block diagram which shows the example of a change of the cavity and hot runner part in the same insert mold apparatus,

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Insert mold apparatus 2 Insert mold part 2c Fixed insert mold 3 Mold base part 3c Fixed base part 4 Hot runner part 4p Tip part of a hot runner part 5 Support surface relative displacement means 6 Mold exchange plate 7 Energizing Member 8 Stopper portion 9 Lock portion 11 Guide jig Kcs Support surface Xi Insertion position Xf Non-insertion position Ff Advance / Retreat direction Ps Supported position

Claims (7)

  A hot runner in which a tip part is inserted into a fixed insert mold in the insert mold part by providing the insert mold part, a mold base part supporting the insert mold part, and the mold base part. In a nested mold apparatus comprising a portion, an insertion position at which the hot runner portion inserts into the fixed nested mold at least a support surface of the fixed base in the mold base that supports the fixed nested mold, and the 2. A telescopic mold apparatus comprising a support surface relative displacement means for relatively displacing the hot runner portion to a non-insertion position where the hot runner part is detached from the fixed telescopic mold.   2. The nested mold apparatus according to claim 1, wherein the support surface relative displacement means includes a mold exchanging plate having the support surface and being displaceable in an advancing and retreating direction with respect to the fixed base.   The support surface relative displacement means includes an urging member that urges the mold replacement plate in a direction away from the hot runner portion, and a stopper portion that regulates a position of the mold replacement plate when displaced. The telescopic mold apparatus according to claim 2.   The telescopic mold apparatus according to claim 2, further comprising a lock portion that fixes the mold exchanging plate at the insertion position.   In a telescoping mold attaching method for attaching the fixed telescoping mold to the fixed base in a state in which a tip part of a hot runner provided in the stationary base in the mold base is inserted into the fixed telescoping mold in the telescoping mold The support surface of the fixed base that supports the fixed insert mold is relatively displaced to a non-insertion position where the hot runner part is detached from the fixed insert mold, and then the fixed insert mold is moved to the support surface. If the fixed insert mold is fixed to the support surface at the supported position, the support surface is inserted into the fixed insert mold by the hot runner portion. A method of attaching a telescopic mold, characterized by relative displacement up to   6. The nested mold mounting method according to claim 5, wherein the support surface is provided on a mold replacement plate that is displaceable in a forward and backward direction with respect to the fixed base.   When the fixed insert mold is advanced to the supported position, a guide jig that is attached to and detached from the support surface is attached to the support surface, and the fixed insert mold is slid on the upper surface of the guide jig. 6. The method of attaching a telescoping die according to claim 5, wherein the method is made to enter.

Images