JP3749836B2 - Injection molding method of composite molded product and injection mold - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an injection molding method of a composite molded article, and an injection molding used in the implementation of this method, in which a composite molded article is molded by 1, 2, and tertiary molding using the first and second mold apparatuses. It relates to molds.
[0002]
[Prior art]
A two-color molding method in which a first resin material is injected in primary molding, a second resin material having a different color from the first resin material is injected in secondary molding, and a molded product having different colors is integrally molded; An injection molding method or the like for obtaining a laminate by injecting a second resin material on the first resin material is conventionally known as a composite molding method. The mold used for carrying out this method is also well known, and is composed of a fixed mold and a rotating mold that rotates around the central axis of the mold. These molds are provided with a primary molding cavity on one of the rotating shafts and a secondary molding cavity on the other. Therefore, when the first resin material is injected into the primary molding cavity, the primary molding portion is molded. Therefore, when the mold is opened, the rotary mold is rotated to the secondary molding position, and the second resin material is injected into the secondary molding cavity where the primary molding portion is held, a two-color molded product or a laminated product is obtained. can get.
[0003]
Further, an injection molding method for molding one composite molded product from three or more semi-molded products, that is, three semi-molded products, has been proposed by, for example, Japanese Patent Application Laid-Open No. 2000-153538. A mold used for carrying out this molding method is composed of a slide mold and two slide cores. The slide core slides in a direction different from the slide direction of the slide mold, and the slide mold and the slide core have a position where the cavity of the slide mold and the cavity of the slide core are separated from each other, and a position where they are closely aligned with each other. Is supposed to be adopted. Therefore, in the primary molding, three half-molded products are simultaneously molded in the slide mold and slide core, the slide core is opened with the latter half molded product remaining in the slide mold and slide core, and the slide The mold and the slide core are slid to collect the semi-molded product at a predetermined position. When the molten resin is injected into the joined portion that has been assembled and clamped by secondary molding, a composite molded product in which three semi-molded products are integrated in the slide mold and the slide core is obtained.
[0004]
[Problems to be solved by the invention]
As described above, since a mold for obtaining a composite molded product composed of a two-color molded product or three semi-molded products is known, a composite molded product composed of a three-color molded product or three different materials based on these molds. It is possible to configure a dedicated machine for molding the product and to mold a composite molded product such as a three-color molded product. According to such a dedicated machine, an advantage that molding can be performed efficiently is recognized. Further, when the number of composite molded products to be molded increases, the merit of the dedicated machine is generated. However, the dedicated machine has a drawback that it lacks versatility or applicability. In addition, the dedicated machine is more expensive than the general-purpose machine and there are no compatible parts, which may increase the maintenance cost.
An object of the present invention is to provide an injection molding method and a molding die for a composite molded product such as a three-color molded product in which the above-described drawbacks are eliminated. That is, an object of the present invention is to provide a composite molded product injection molding method and an injection mold for molding a composite molded product made of three colors or three materials at low cost. Another object of the present invention is to provide an injection mold that can be applied to molding other than a composite molded product made of three colors or three materials.
[0005]
[Means for Solving the Problems]
The above object of the present invention is to combine a general-purpose mold, that is, a mold for primary molding, with a mold for two-color molding, that is, molds for secondary and tertiary molding, and in these molds. This is achieved by inserting a nesting piece, ie, a nesting piece, and forming the nesting piece using the nesting piece. That is, in order to achieve the above object, the invention according to claim 1 is a molding method for molding a composite molded product by first, second and third molding using the first and second mold apparatuses, By primary molding, molten resin is injected and filled into a primary molding cavity, a part of which is formed by the insert piece mounted on the first mold apparatus, and the primary molding part is molded, and then secondary molding is performed. Attaches the insert piece containing the primary molding part to the second mold apparatus, and injects and fills the molten resin into the secondary molding cavity, part of which is constituted by the primary molding part. Then, the secondary molding part integrated with the primary molding part is carried out, and the secondary molding is carried out in the insert piece attached to the second mold apparatus. Injection molding of molten resin into a cavity for tertiary molding, part of which is made up of parts Te, adapted to perform so as to mold the tertiary molding part integral with said second mold portion.
The invention according to claim 2 is a sequential molding method for molding a composite molded product by 1, 2 and 3 molding using the first and second mold apparatuses, wherein the first molding is performed by the first molding. The primary molding part is formed by injecting and filling molten resin into a primary molding cavity, a part of which is formed by the insert piece mounted on the mold apparatus, and the primary molding part includes the primary molding part. The inserted piece is mounted on the second mold apparatus, and a molten resin is injected and filled into a cavity for secondary molding which is partially constituted by the primary molding part, and the primary molding part The secondary molding portion integrated with the second molding portion is molded, and the third molding is moved to the third molding position with the insert piece containing the secondary molding portion mounted, and the secondary molding portion is moved. Injection molding of molten resin into a cavity for tertiary molding, part of which is formed by the molded part Te, wherein the tertiary molding part integral with the secondary mold portion carried to shape, this time, the a secondary molding is a composite molded article is trying to molding, before trying to similarly shaped The tertiary molding of the composite molded article is performed in the second mold apparatus substantially simultaneously. According to a third aspect of the present invention, the first, second and third molded parts according to the first or second aspect are formed from different resin materials or different color resin materials.
According to a fourth aspect of the present invention, there is provided a first mold apparatus comprising a fixed mold and a movable mold that is opened and closed with respect to the fixed mold, a fixed mold, and the fixed mold. The second mold apparatus is composed of a slide mold that can be opened and closed and slidably moved, and the movable mold of the first mold apparatus has 1 on the parting line side. A recess is formed in which the insert piece for forming the next molding part is detachably attached, and the insert piece is also detachably attached to the parting line side of the slide mold of the second mold apparatus. A concave portion is formed, and a concave portion for forming secondary and tertiary molded portions corresponding to the concave portion is formed on the parting line side of the fixed mold.
According to a fifth aspect of the present invention, there is provided a first mold apparatus comprising a fixed mold and a movable mold that is opened and closed with respect to the fixed mold, a fixed mold, and the fixed mold. The second mold apparatus is composed of a slide mold that can be opened and closed and slidably moved, and the movable mold of the first mold apparatus has 1 on the parting line side. A recess is formed in which the insert piece for forming the next molding part is detachably attached, and the insert piece is detachably attached to the parting line side of the slide mold of the second mold apparatus. Two concave portions are formed, and on the parting line side of the fixed mold, one concave portion for secondary molding corresponding to the two concave portions of the slide mold, and the concave portion for secondary molding Constructed to form two recesses for molding the secondary molding part and tertiary molding part across It is.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below. FIG. 1 (a) shows a state in which the molds for secondary and tertiary molding are opened, and FIG. 1 (b) shows a state in which the general-purpose mold for primary molding is closed. As shown in FIG. 1 (a), the secondary and tertiary molding dies according to the present embodiment are fixed molds 1 shown above in FIG. 1 (a). And a slide mold 30 shown below. The molds 1 and 30 are clamped by a clamping device not shown in FIG. In addition, the slide mold 30 is provided with an ejector device or the like that penetrates the insert piece, which will be described later, as necessary.
[0007]
On the parting line P side of the fixed mold 1, one central recess 2 for secondary molding is provided at the substantially central part thereof, which opens on the parting line P side, that is, on the lower side. As described above, since the central concave portion 2 is provided in the substantially central portion of the fixed mold 1, even when injection is performed at a relatively large injection pressure during the secondary molding, an uneven load acts on these molds 1 and 30. This will not damage the mold. First and second concave portions 3 and 4 for secondary molding opened to the parting line P side are formed at symmetrical positions on both sides of the central concave portion 2 for secondary molding. These first and second recesses 3 and 4 are portions where the primary molding portion is inserted during the secondary molding, and the first and second recesses for the third molding are continuously formed on the recesses 3 and 4 thereon. Sub-recesses 5 and 6 are provided, respectively. In the present embodiment, the diameters or areas of the first and second sub-recesses 5 and 6 are smaller than the areas of the first and second recesses 3 and 4 and are hemispherical for easy understanding. It is shown.
[0008]
The first and second runner inlets 7 and 8 are provided on the injection device side of the fixed mold 1, that is, on the upper side in FIG. 1A, and correspond to these first and second runner inlets 7 and 8. A first injection nozzle 10 for injecting a second resin material and a second injection nozzle 11 for injecting a third resin material are arranged. A runner 12 having a conventionally known shape extends straight from the first runner inlet 7 toward the central recess 2 for secondary molding. On the other hand, the main runner 13 for tertiary molding extending from the second runner inlet 8 includes a first runner 15 for tertiary molding and a second runner 16 for tertiary molding on the way. The first runner 15 opens to the first sub-recess 5 for tertiary molding, and the second runner 16 opens to the second sub-recess 6 for tertiary molding via a gate. . A runner switching device 20 is provided at a branch point of the main runner l3 for tertiary molding.
[0009]
The runner switching device 20 includes a columnar core portion 21 in the present embodiment. A first resin passage 22 and a second resin passage 23 are formed in the core portion 21 with a predetermined interval. The core portion 21 in which the first and second resin passages 22 and 23 are provided is formed in a bore 24 formed in the fixed mold 1 by a piston / cylinder unit 25 in FIG. It is driven in the left-right direction. The positional relationship between the main runner 13 and the first and second resin passages 22 and 23 of the core portion 21 and the first and second runners 15 and 16 for tertiary molding is shown in FIG. In the first position, the third molding main runner 13 communicates with the first runner 15 via the first resin passage 22 of the core portion 21 and the piston / cylinder unit 25 moves the core portion 21 to the right. When driven in the direction to the second position, the main runner 13 for tertiary molding is now in communication with the second runner 16 via the second resin passage 23 of the core portion 21. The runner 12, the main runner 13, and the first and second runners 15 and 16 for tertiary molding are provided at positions where they are not short-circuited with each other.
[0010]
On the surface of the slide mold 30 facing the fixed mold 1, first and second concave portions 31 to which a later-described insert piece 50 is detachably mounted at the time of secondary molding opened to the parting line P side, 32 are formed. The second recess 32 is shown with the insertion piece 50 inserted. These first and second recesses 31 and 32 are paired with the central recess 2 for secondary molding of the fixed mold 1 and the first and second recesses 3 and 4 for secondary molding. It is increased by the amount of the insert piece 50 described later. When the slide mold 30 is in the first position shown in FIG. 1A, these first and second recesses 31 and 32 are used for secondary molding of the fixed mold 1. The first concave portion 32 and the central concave portion 2 for secondary molding are aligned with each other. When the slide mold 30 is driven to the second position, the first and second recesses 31 and 32 are formed by the central recess 2 for secondary molding of the fixed mold 1 and the second recess for secondary molding. 4 and 4 respectively. In addition, notches 31 ′ and 32 ′ into which gripping portions of the robot for carrying in and out the insert piece 50 are respectively formed in parts above the peripheral walls of the first and second recesses 31 and 32.
[0011]
The slide mold 30 configured as described above can open the mold as is well known in the art, and a detailed mechanism is not shown in FIG. 1, but the mold moving piston / cylinder unit 35 of FIG. In (b), it is slidably driven in the left-right direction so that the first position and the second position can be taken as described above.
[0012]
A general-purpose mold 40 for primary molding includes a fixed mold 41 and a movable mold 45 as shown in FIG. On the parting line P side of the fixed mold, a shallow concave portion 42 for forming a part of the primary molding portion is formed, and a sprue 43 is opened in the concave portion 42 through a gate. On the parting line P side of the movable mold 45, a recess 46 having the same size as the first and second recesses 31, 32 of the slide mold 30 is formed. The insert piece 50 is attached to the recess 46 during the primary molding. The insertion piece 50 is formed with a concave portion 51 for primary molding that opens to the parting line P side when mounted in the concave portion 46 of the movable mold 45. The recess 51 is aligned with the recess 42 of the fixed mold 41. In addition, a notch 46 ′ into which a gripping part of a robot that carries in or out the insert piece 50 is formed is formed in a part of the peripheral wall of the concave portion 46 of the movable mold 45.
[0013]
Next, an injection molding method using the molds 1 and 30 and the insert piece 50 will be described. Similar to the three-color molding method, a composite molded product made of three different materials or a composite molded product made of the same material can be molded, but only the three-color molding method will be described below. The movable mold 45 of the general-purpose mold 40 is opened, and the insert piece 50 is mounted in the recess 46. At this time, since a notch 46 ′ is formed in a part of the peripheral wall of the recess 46, it can be mounted by a robot, a manipulator or the like. Then, clamp the mold. Then, as shown in FIG. 2A, a cavity C1 for forming a primary molding portion is constituted by the concave portion 42 of the fixed mold 41 and the concave portion 51 for primary molding of the insert piece 50. . A first resin material is injected from the injection nozzle 47. The state of injection is shown in FIG. Thereby, the primary molding part J1 is shape | molded. The movable mold 45 is opened, and the insert piece 50 is taken out with the primary molding portion J1 contained. In the same manner, the primary molded product J1 is molded in synchronization with the second and third molding described later.
[0014]
On the other hand, the slide mold 30 for secondary and tertiary molding is slid to the first position shown in FIG. The insert piece 50 containing the primary molded portion J1 is mounted in the second recess 32 of the slide mold 30. The notch 32 ′ can also be used when mounting the insert piece 50. At this time, it is assumed that the first recess 31 for secondary molding of the slide mold 30 is already mounted with the insert piece 50 containing the primary molding portion J1 and the secondary molding portion J2. To do. The mold is then clamped. Further, the core portion 21 of the runner switching device 20 is driven to the first position by the piston / cylinder unit 25. Then, as shown in FIG. 2B, the secondary molding cavity C2 is fixed by the central recess 2 for secondary molding of the fixed mold 1 and the upper surface of the primary molding portion J1. A tertiary molding cavity C3 is constituted by the first sub-recess 5 for tertiary molding of the mold 1 and the upper surface of the secondary molding portion J2. Furthermore, the main runner 13 for tertiary molding communicates with the first runner 15 via the first resin passage 22 of the core portion 21 and opens to the cavity C3 for tertiary molding. The runner 12 always communicates with the central recess 2 for secondary molding.
[0015]
Therefore, a second resin material having a color different from that of the first resin material is injected from the first injection nozzle 10. The second resin material is injected from the runner 12 into the secondary molding cavity C2 of the fixed mold 1 to mold the secondary molding portion J2. At the same time, a third resin material having a color different from that of the second resin material is injected from the second injection nozzle 11. The third resin material is injected from the third molding main runner 13 through the first resin passage 22 of the core portion 21 and the first molding runner 15 into the third molding cavity C3. Filled. That is, the tertiary molded product J3 injected integrally with the secondary molded portion J2 is molded. A state where the secondary molded portion J2 and the tertiary molded product J3 are molded substantially simultaneously is shown in FIG.
[0016]
Waiting for cooling and solidification, the slide mold 30 is opened as shown in FIG. Then, the three-color molded product J is taken out. Alternatively, the insertion piece 50 is taken out in a state where the three-color molded product J is inserted, and the three-color molded product J is taken out from the insertion piece 50. As described above, the insertion piece 50 containing the primary molded portion J1 that has been primarily molded by the general-purpose mold 40 is mounted in the first recess 31 of the slide mold 30. The slide mold 30 is slid to the second position by the mold moving piston / cylinder unit 35. Further, the core portion 21 is moved to the second position. Then, clamp the mold. Then, as shown in FIG. 4A, the secondary molding cavity C2 is fixed by the central recess 2 for secondary molding of the fixed mold 1 and the upper surface of the primary molding portion J1. The third sub-recess 6 for tertiary molding of the mold 1 and the upper surface of the secondary molding portion J2 constitute a cavity C3 for tertiary molding. The tertiary molding main runner 13 communicates with the second runner 16 via the second resin passage 23 of the core portion 21 and opens into the tertiary molding cavity C3. The runner 12 communicates with the central recess 2 for secondary molding, that is, the cavity C2 for secondary molding.
[0017]
Next, a second resin material having a color different from that of the first resin material is injected from the first injection nozzle 10. The second resin material is injected from the runner 12 into the secondary molding cavity C2 of the fixed mold 1 to mold the secondary molding portion J2. At the same time, a third resin material having a color different from that of the second resin material is injected from the second injection nozzle 11. The third resin material fills the cavity C3 for the third molding from the main runner 13 for the third molding through the second resin passage 23 of the core portion 21 and the second runner 16 for the third molding. Is done. That is, the secondary molded part J2 and the tertiary molded product J3 injected integrally with the secondary molded part J2 are molded substantially simultaneously.
[0018]
After waiting for cooling and solidification, the slide mold 30 is opened as shown in FIG. Then, the three-color molded product J is taken out as described above. Alternatively, the insertion piece 50 is taken out in a state where the three-color molded product J is inserted, and the three-color molded product J is taken out from the insertion piece 50. The insert piece 50 containing the primary molded portion J1 that has been primarily molded by the general-purpose mold 40 is mounted in the second recess 32 of the slide mold 30. The slide mold 30 is slid to the first position by the mold moving piston / cylinder unit 35. Further, the core portion 21 is moved to the first position. Then, clamp the mold. Thereafter, the above-described operation is repeated for molding.
[0019]
In the above embodiment, the slide mold 30 is moved to the first position after the insertion piece 50 containing the primary molding portion J1 is mounted in the first recess 31 or the second recess 32 of the slide mold 30. Or although it demonstrated that it was slid to a 2nd position, it is clear that it can mount | wear after sliding. It is also clear that the first to third molded parts J1 to J3 can all be molded from the same resin material, or can be molded from two types of resin materials. Moreover, the opening part of the recessed part 46 of the movable metal mold | die 45 or the 1st, 2nd recessed parts 31 and 32 of the slide metal mold | die 30 can also be slightly expanded by a taper part. Thereby, mounting | wearing of the insertion piece 50 becomes easy. Furthermore, since the recess 46 of the movable mold 45 or the first and second recesses 31 and 32 of the slide mold 30 are formed with notches 46 ′, 31 ′ or 32 ′, these correspond to these notches. It is also possible to provide a grip portion in the position toward the insert piece 50.
[0020]
【The invention's effect】
As described above, according to the first aspect of the present invention, the molten resin is injected into the primary molding cavity that is partially formed by the insert piece mounted on the first mold apparatus by the primary molding. Filling to form a primary molded part, and in secondary molding, the insertion piece containing the primary molded part is mounted on a second mold apparatus, and a part of the primary molded part is constituted. The molten resin is injected and filled into the cavity for secondary molding, and the secondary molding part integrated with the primary molding part is molded, and the tertiary molding is mounted on the second mold apparatus. A molten resin is injected and filled into a cavity for tertiary molding, which is partially constituted by the secondary molded part contained in the insert piece, and a tertiary molded part integrated with the secondary molded part is obtained. Since it is carried out like molding, that is, primary molding uses a general-purpose mold device. Runode, effects can be obtained in the characteristic of the invention that can be inexpensively molded three colors or different may be composed of three material composite molded article. Further, since the primary molding portion is molded by the insert piece, precise molding can be performed without considering deformation due to shrinkage due to solidification. Furthermore, since the primary molding part shape | molded with the 1st metal mold apparatus is mounted to a 2nd metal mold | die apparatus with an insertion piece, the effect that handling becomes easy is also acquired.
According to the invention described in claim 2, substantially simultaneously the second gold and secondary molding is the composite molded trying to mold, and a third-order shaping of the preceding composite molded article that is to be molded in the same manner Since it implements in a type | mold apparatus, in addition to the above effects, the effect which molding efficiency increases further is acquired.
According to the invention of claim 4 or 5, the first mold apparatus comprising a fixed mold and a movable mold that is opened and closed with respect to the fixed mold, the fixed mold, and the fixed mold In addition to the above-described effects, the first and second effects are obtained by combining the second mold apparatus with a slide mold that is slidably movable while being opened and closed with respect to the mold. The mold apparatus can be used independently for other purposes. For example, a first mold device can be used to injection-mold a molded product made up of a single molded part as is well known in the art, and a cavity is appropriately formed in the second mold device to form a two-color molded product or 2 Molded articles made of two different materials can be molded. According to the invention described in claim 5, on the parting line side of the fixed mold, there is one recess for secondary molding corresponding to the two recesses of the slide mold, and the secondary molding. Since there are two recesses that form the secondary molded part and the tertiary molded part with the concave part interposed therebetween, a bias pressure that acts on the mold even when injected with a relatively large injection pressure during secondary molding Is small. Therefore, the durability of the mold is improved, and an effect of being molded with a small mold clamping force can be obtained.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a mold according to the present invention, in which (A) is a state in which a mold for secondary and tertiary molding is opened, and (B) is a general-purpose for primary molding. It is sectional drawing each shown in the state which closed the metal mold | die.
FIG. 2 is a view showing an operation position of a mold according to an embodiment of the present invention, in which (A) is in a primary molding state, and (B) is a secondary position and a third position in a first position. It is sectional drawing each shown in the state which can perform next shaping | molding.
FIG. 3 is a view showing the operating position of the mold according to the embodiment of the present invention, in which (A) is the state where secondary and tertiary molding is completed at the first position, and (B) is the first position. It is sectional drawing shown in the state which opened the slide metal mold | die at the position of 1, respectively.
FIG. 4 is a diagram showing the operating position of the mold according to the embodiment of the present invention, in which (A) is in a state where secondary and tertiary molding can be performed at the second position, and (B) is the second. It is sectional drawing each shown in the state which opened the slide metal mold | die in the position.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fixed metal mold | die 2 Central recessed part 3 for secondary shaping | molding 1st recessed part 4 for secondary shaping | molding 4 2nd recessed part 5 for secondary shaping | molding 1st sub recessed part 6 for tertiary shaping | molding 6th for 3rd shaping | molding 2 sub-recesses 30 slide mold 31 first recess 32 second recess 40 primary-molding (general-purpose) mold 41 fixed mold 45 movable mold 50 insert piece 51 primary-molding recess C1 primary Cavity for molding C2 Cavity for secondary molding C3 Cavity for tertiary molding J1 Primary molded part J2 Secondary molded part J3 Tertiary molded part J Three-color molded product (composite molded product)
Reference number H13099 Page (1/4)

Claims (5)

A molding method for molding a composite molded article by 1, 2, and tertiary molding using first and second mold apparatuses,
By primary molding, a molten resin is injected and filled into a cavity for primary molding, part of which is constituted by a insert piece mounted on the first mold apparatus, and a primary molded part is molded,
In the secondary molding, the insert piece containing the primary molding portion is attached to the second mold apparatus, and a molten resin is formed in the secondary molding cavity that is partly constituted by the primary molding portion. Injection-filling, and so as to form a secondary molded part integrated with the primary molded part,
The tertiary molding is performed by injecting molten resin into a cavity for tertiary molding, a part of which is formed by the secondary molding portion contained in the insert piece attached to the second mold apparatus, An injection molding method for a composite molded product, characterized in that the method is carried out so as to mold a tertiary molded part integrated with the secondary molded part. A molding method for sequentially molding composite molded products by 1, 2, and tertiary molding using first and second mold apparatuses,
By primary molding, a molten resin is injected and filled into a cavity for primary molding, part of which is constituted by a insert piece mounted on the first mold apparatus, and a primary molded part is molded,
In the secondary molding, the insert piece containing the primary molding portion is attached to the second mold apparatus, and a molten resin is formed in the secondary molding cavity that is partly constituted by the primary molding portion. Injection-filling, and so as to form a secondary molded part integrated with the primary molded part,
The tertiary molding is performed by moving to a tertiary molding position in a state in which the insert piece containing the secondary molding portion is mounted, and into a cavity for tertiary molding that is partially configured by the secondary molding portion. Injecting and filling the molten resin, the third molded part integrated with the second molded part is molded,
At this time, the secondary molding of a composite molded product to be molded and the tertiary molding of the previous composite molded product to be molded in the second mold apparatus are substantially simultaneously performed. An injection molding method of a composite molded product to be performed. 3. An injection molding method for a composite molded product, wherein the first, second and third molding parts according to claim 1 or 2 are molded from resin materials of different materials or resin materials of different colors. A first mold apparatus comprising a fixed mold and a movable mold that is opened and closed with respect to the fixed mold;
It consists of a combination of a fixed mold and a second mold apparatus consisting of a slide mold that is slidably movable while being opened and closed with respect to the fixed mold,
On the parting line side of the movable mold of the first mold apparatus, there is formed a recess in which a slot for forming a primary molded part is detachably mounted,
A concave portion is formed on the parting line side of the slide mold of the second mold apparatus so that the insertion piece can be detachably attached, and the parting line side of the fixed die corresponds to the concave portion. A mold for injection molding of a composite molded product, in which concave portions for molding the secondary and tertiary molded portions are formed. A first mold apparatus comprising a fixed mold and a movable mold that is opened and closed with respect to the fixed mold;
It consists of a combination of a fixed mold and a second mold apparatus consisting of a slide mold that is slidably movable while being opened and closed with respect to the fixed mold,
On the parting line side of the movable mold of the first mold apparatus, there is formed a recess in which a slot for forming a primary molded part is detachably mounted,
Two recesses are formed on the parting line side of the slide mold of the second mold apparatus, and the slides are detachably mounted on the parting line side, and the slide part is formed on the parting line side of the fixed mold. Corresponding to the two concave portions of the mold, one concave portion for secondary molding and two concave portions for molding the secondary molded portion and the tertiary molded portion sandwiching the concave portion for secondary molding are formed. Molds for injection molding of composite molded products.

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