JP2010046997A - Resin product and molding apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin product improved in sense of use by preventing hands or fingers from coming into contact with a step part in the vicinity of a parting line of the leading surfaces of a flange molded so as to direct inward at the upper end of both side plates. <P>SOLUTION: As shown in Fig.1(a) and (b), a protruding streak 21j is integrally formed so as to protrude from a parting line PL in the horizontal direction at a position downward by predetermined distance E away from the parting line PL set at a position of the intermediate height of the leading surface S2 with respect of the leading surface S2 of the left side flange part 21f integrally formed at the upper end of the left side plate 21b of the console box 21. By virtue of the protruding streak 21j, hands or fingers of a person are prevented from coming into contact with the step part 21k formed in the vicinity of the parting line PL. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a resin product such as a console box provided in the interior of an automobile and a molding apparatus therefor, and more specifically, a resin product having a flange portion directed inwardly on top of a pair of left and right side plates, and an underside of the flange portion. The present invention relates to a molding apparatus that performs cut molding.

  Generally, a lever for changing the vehicle speed of the automobile is provided between the driver's seat and the passenger seat of the automobile, and a console box is provided behind the lever, and a cassette tape, a CD, etc. are provided in the box. It is designed to store small items. This console box is integrally formed of a synthetic resin material, and its upper end opening is opened and closed by a lid. In order to support the lid, a flat portion having a predetermined width is formed in the upper end opening.

  Conventionally, as this type of console box, the one disclosed in FIG. 10 has been proposed. The console box 21 is formed in a square box shape with a bottom, and is attached to a frame of an automobile. A front side plate 21d and a rear side plate 21e integrally formed on both side edges (the front and rear side plates are formed at a predetermined interval in the direction perpendicular to the plane of FIG. 10). A left flange portion 21f and a right flange portion 21g that are directed inwardly are formed integrally with upper end edges of the left plate 21b and the right plate 21c. A front flange portion (not shown) and a rear flange portion (not shown) that are directed outward are integrally formed at upper end edges of the front plate 21d and the rear plate 21e. The flange portions 21f and 21g as the flat portions improve the rigidity of the upper end opening edge of the console box and can stably support the lower surface of the lid.

As shown in FIG. 10, the left flange 21f formed integrally with the upper end of the left side plate 21b of the console box 21 has an upper surface S1, an inner tip surface S2, and a lower surface, that is, an undercut surface S3. It is connected smoothly by the arc surface. And even if a finger contacts the left flange part 21f when putting in and out of the console box 21 of small articles, the contact feeling is improved. (Patent Document 1 discloses a console box and its molding device.)
JP 2001-162627 A

  However, the conventional console box 21 has the following problems because the left flange portion 21f and the right flange portion 21g are formed by a molding apparatus that performs undercut molding.

  As shown in FIG. 11 (a), the console box 21 molding apparatus includes a fixed die 51 having a molding surface for molding the upper surface S1 and the top surface S2 of the left flange portion 21f, and a bottom surface of the tip surface S2. And a slide core 52 having a molding surface that forms a side and an undercut surface S3. A parting line PL is set at a middle height position in the up-down direction of the tip end surface S2 by the die-matching surfaces of the fixed die 51 and the slide core 52. The slide core 52 is reciprocated in the direction of the arrow in FIG.

  In the state where the molding apparatus is completely manufactured, as shown in FIG. 11A, the fixed mold 51 and the slide core 52 are stepped in the middle height position of the front end surface S2 of the left flange portion 21f in the vicinity of the parting line PL. The molds are matched so that the parts are not molded. However, when the molding operation of the console box 21 by the molding apparatus is repeatedly performed, for example, when the mold matching surface 51a of the fixed mold 51 and the mold matching surface 52a of the slide core 52 are worn, the slide core 52 is moved to FIG. In FIG. 11B, for example, about 0.1 mm to 0.2 mm is moved, and a step R is formed in the vicinity of the parting line PL between the fixed mold 51 and the slide core 52 as shown in FIG. By this step portion R, a step portion 21k having a right-angled cross section is formed on the front end surface S2 of the left flange portion 21f of the console box 21. Therefore, when a small article in and out of the console box 21 is taken in and out, there is a problem that a human finger comes into contact with the stepped portion 21k and feels uncomfortable and the usability of the console box 21 is lowered.

  The present invention has been made to solve the above-described problems in the prior art. The purpose is to improve the feeling of use by eliminating the need for fingers to come into contact with the stepped part formed in the vicinity of the parting line on the front end surface of the flange part that is shaped inwardly at the upper ends of both side plates. An object of the present invention is to provide a resin product and a molding apparatus for the resin product.

  In order to solve the above problems, the invention according to claim 1 is a resin product in which side plates are integrally formed on both left and right side portions of a bottom plate, and flange portions directed inward are integrally formed on upper end portions of both side plates. A smooth surface ridge is formed at a predetermined distance downward from a parting line set at an intermediate height position in the vertical direction with respect to the opposite end surfaces of the flange portions. The gist is that they are integrally molded at a predetermined height toward the direction.

  The invention according to claim 2 is the invention according to claim 1, wherein the distance from the parting line to the ridge is set in a range of 0.2 mm to 2.0 mm, and the height of the ridge is The gist is that it is set in the range of 0.2 mm to 3.0 mm.

  According to a third aspect of the present invention, in the second aspect, the distance is set in a range of 0.5 mm to 1.0 mm, and the height is set in a range of 0.4 mm to 1.0 mm. This is the gist.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the protruding portion is formed in a semicircular shape in cross section, and a lower end edge of the protruding portion is a lower surface of the flange portion. That is, the gist is that it is smoothly connected to the undercut surface.

  The invention according to claim 5 is used for molding a resin product in which side plates are integrally formed on both left and right side portions of the bottom plate, and a flange portion that is directed inward is integrally formed on the upper end portions of both side plates. In the molding apparatus including an inner mold, the outer mold includes a bottom plate mold for molding the lower surface of the bottom plate, a side plate mold for molding the outer surfaces of both side plates, and an upper surface of the flange portion of the resin product. A flange part mold having a molding surface that molds a tip upper molding surface that molds a tip surface that is above the parting line set on the tip surface of the tip surface of the flange part, and The inner mold includes a pair of left and right inner slide cores. The inner slide cores include a molding surface that molds the upper surface of the bottom plate, a molding surface that molds the inner surfaces of both side plates, and the lower surface of the flange portion, that is, the underside. Cut surface An undercut molding surface to be formed, and a tip lower molding surface that molds a tip surface lower than the parting line among the tip surfaces of the flange portion, and the tip lower molding surface of the inner slide core On the other hand, the gist is that a protrusion forming groove for forming the protrusion is formed on the front end surface of the flange portion at a predetermined distance downward from the parting line.

The gist of the invention described in claim 6 is that, in claim 5, the resin product is a console box used in an automobile.
(Function)
The present invention provides a smooth surface ridge at a predetermined distance downward from a parting line set at an intermediate height position in the vertical direction with respect to the opposite end surfaces of both flange portions. Each was integrally molded at a predetermined height inward. For this reason, even if a step portion is formed by a molding device in the vicinity of the parting line of the flange portion, the step portion is contacted with the ridge portion before the human finger contacts the step portion, and the step portion is touched with the finger. Is never touched.

  According to the present invention, even if a step portion is formed in the vicinity of the parting line on the front end surface of the flange portion formed so as to be directed inward at the upper end portions of both side plates of the resin product, The feeling of use of the resin product can be improved without touching the fingers.

Hereinafter, an embodiment in which the present invention is embodied as a console box as a resin product of an automobile and a molding apparatus thereof will be described with reference to FIGS.
First, the configuration of the console box 21 molded using the molding apparatus will be described with reference to FIGS.

  As shown in FIG. 3, the console box 21 is attached to a frame 22 between the driver's seat and the passenger seat of the automobile by a plurality of bolts 23 and nuts 24. As shown in FIG. 2, a lid 25 is attached to the upper end portion of the mounting panel 26 by a hinge mechanism 27, and the upper end opening of the console box 21 is covered with the lid 25 so as to be opened and closed. An ash tray 28 that accommodates the cigarette butt is attached to the attachment panel 26.

  The console box 21 is formed in a bottomed square box shape, and includes a bottom plate 21a attached to the frame 22, a left side plate 21b and a right side plate 21c integrally formed on the left and right side edges of the bottom plate 21a, and both front and rear sides of the bottom plate 21a. A front side plate 21d and a rear side plate 21e formed integrally with the edge are provided. A left flange portion 21f and a right flange portion 21g that are directed inwardly are formed integrally with upper end edges of the left plate 21b and the right plate 21c. A front flange portion 21h and a rear flange portion 21i that are directed outward are integrally formed at upper end edges of the front plate 21d and the rear plate 21e. And these flange parts 21f-21i can improve the rigidity of the upper-end opening part of the console box 21, and can support the lower surface of the said lid | cover 25 stably.

  Next, the configuration of the main part provided in the left flange portion 21f of the console box 21 will be described with reference to FIGS. Since the configuration of the right flange portion 21g is the same as the configuration of the left flange portion 21f, only the configuration on the left flange portion 21f side will be described.

  As shown in FIG. 1 (a), the upper surface S1 of the left flange portion 21f integrally formed inward at the upper edge of the left plate 21b is smoothly connected to the flat tip surface S2 by an arc surface. Yes. The lower surface of the left flange portion 21f is a planar undercut surface S3.

  As shown in FIG. 1 (b), a parting line PL formed by a fixed die 33 and a die-mating surface of the first inner slide core 41, which will be described later, is located at an intermediate position in the vertical direction of the tip surface S2. A parting line PL corresponding to (see FIG. 6A) is set. On the front end surface S2 of the left flange portion 21f, a ridge portion 21j is formed integrally and inwardly at a position away from the parting line PL by a predetermined distance E. The lower end edge of the protruding portion 21j and the right end edge of the undercut surface S3 are smoothly connected. As shown in FIG. 2, the protrusion 21j is formed in the entire area of the left flange 21f.

  FIG. 1B shows a step R (see FIG. 7B) in a parting line PL formed by a fixed mold 33 of a molding apparatus described later and a first inner slide core 41 in the vicinity of the parting line PL. As described in the background art, the stepped portion R forms a stepped portion 21k having a right-angled cross section at the front end surface S2 of the left flange portion 21f, and the stepped portion 21k and the protrusion A state is shown in which a groove 21l having a depth d is formed between the portion 21j. As described above, even when the stepped portion 21k is formed in the left flange portion 21f, when a small article is put in and out of the console box 21, the protrusion portion is formed before a human finger is brought into contact with the stepped portion 21k. Therefore, the finger is prevented from coming into contact with the stepped portion 21k. FIG. 1C shows a state in which there is no problem in the molding apparatus and the stepped portion 21k is not molded in the left flange portion 21f of the console box 21, and no problem occurs in this case.

Next, based on FIGS. 4-9, the shaping | molding apparatus which shape | molds the console box 21 of the above structures is demonstrated.
As shown in FIGS. 4 and 5, the molding device 30 for the console box 21 includes an outer mold 31 and an inner mold 32. The outer mold 31 is in contact with and separated from the fixed mold 33 to mold the outer surface (lower surface) of the bottom plate 21a of the console box 21 and the fixed mold 33 as a flange mold for molding the outer surfaces of the flange portions 21f to 21i. It is composed of a movable die 34 as a bottom plate molding die that is disposed so as to face each other. On the fixed mold 33 side of the movable mold 34, an outer slide core 35 as a side plate molding mold for molding the outer side surface of the left side plate 21b, and an outer slide core 36 as a side plate molding die for molding the outer side surface of the right side plate 21c. Are arranged opposite to each other. Each of the outer slide cores 35 and 36 is formed in a substantially U-shaped cross section and has a function of forming the outer surfaces of the front side plate 21d and the rear side plate 21e of the console box 21.

  As shown in FIGS. 4 and 5, the inner mold 32 includes a first inner slide core 41 that molds the left inner surface of the console box 21 and a second inner slide core that molds the right inner surface of the console box 21. 42 and an intermediate core 43 that is interposed between the inner slide cores 41 and 42 to hold the inner slide cores 41 and 42 in a molding position and to perform a mold release operation.

  As shown in FIG. 4, the first inner slide core 41 includes a molding surface 41a for molding a part of the inner surface of the bottom plate 21a of the console box 21, a molding surface 41b for molding the inner surface of the left side plate 21b, and FIG. As shown in FIG. 4, there are provided molding surfaces 41c and 41d for molding part of the inner surfaces of the front side plate 21d and the rear side plate 21e. As shown in FIGS. 4 and 6, the first inner slide core 41 includes an undercut molding surface 41 e for molding the inner lower surface (undercut surface) of the left flange portion 21 f of the console box 21.

  As shown in FIG. 4, the second inner slide core 42, as with the first inner slide core 41, has a molding surface 42 a for molding a part of the inner surface of the bottom plate 21 a of the console box 21, and the inner surface of the right side plate 21 c. And a molding surface 42c and 42d for molding a part of the inner surface of the front side plate 21d and the rear side plate 21e, as shown in FIG. Further, as shown in FIG. 4, the second inner slide core 42 includes an undercut molding surface 42 e that molds the inner lower surface (undercut surface) of the right flange portion 21 g of the console box 21.

  As shown in FIG. 4, the intermediate core 43 includes a molding surface 43a for molding a part of the inner surface of the bottom plate 21a of the console box 21, taper surfaces 43b and 43c having a narrower taper at the lower end, and FIG. As shown in FIG. 3, the front side plate 21d and the rear side plate 21e of the console box 21 are provided with molding surfaces 43d and 43e for molding a part of the inner surface.

  As shown in FIG. 4, the first and second inner slide cores 41 and 42 are formed with inclined surfaces 41f and 42f that are slidably in contact with the tapered surfaces 43b and 43c of the intermediate core 43, respectively. As shown in FIG. 5, a pair of dovetail protrusions 41 g are formed on the inclined surface 41 f of the first inner slide core 41 so as to be parallel to each other and obliquely up and down. A pair of dovetail grooves 43f are formed on one taper surface 43b of the intermediate core 43 so as to be slidably engaged with the dovetail ridges 41g and extend in parallel with each other and obliquely in the vertical direction.

  On the other tapered surface 43c of the intermediate core 43, as shown in FIGS. 4 and 5, a pair of dovetail ridges 43g are formed in parallel with each other and obliquely up and down. A pair of dovetail grooves 42g are formed on the inclined surface 42f of the second inner slide core 42 so as to be slidably engaged with the dovetail ridges 43g, extending in parallel with each other and obliquely in the vertical direction.

  In this embodiment, the dovetail-shaped ridge 41g formed on the slope 41f of the first inner slide core 41, the dovetail groove 42g formed on the slope 42f of the second inner slide core 42, and the taper of the intermediate core 43 are provided. Slide means for sliding the pair of inner slide cores 41, 42 to the releasable position is configured by the dovetail grooves 43 f and the dovetail-shaped ridges 43 g formed on the surfaces 43 b, 43 c.

Pipe release rods 44, 45, 46 are connected to a plurality of locations on the upper surfaces of the inner slide cores 41, 42 and the intermediate core 43.
Next, the configuration of the main part of the molding apparatus will be described with reference to FIGS. 6 (a), 6 (b) and 7 (a), 7 (b).

  As shown in FIG. 6A, a die matching surface 33 a that contacts the die matching surface 35 a of the outer slide core 35 is formed on the lower surface of the fixed die 33. On the inner side surface of the fixed mold 33 (the right side surface in FIG. 6A), a mold matching surface 33b that comes into contact with a mold matching surface 41j described later of the first inner slide core 41 is formed. A molding surface 33c for molding the upper surface S1 of the left side flange portion 21f of the left side plate 21b of the console box 21 is formed on the die mating surface 33a of the fixed mold 33, and the parting line PL of the front end surface S2 is formed. A tip upper molding surface 33d for molding the tip surface S2 on the upper side is formed.

  As shown in FIG. 6 (a), the undercut molding surface 41e of the first inner slide core 41 has the tip surface S2 of the left flange portion 21f so as to be orthogonal to the undercut molding surface 41e. A tip lower side molding surface 41h for molding the tip surface S2 below the parting line PL is formed. The first inner slide core 41 is formed with a mold matching surface 41 i that is perpendicular to the upper end edge of the tip lower molding surface 41 h and that is matched with the mold matching surface 33 a of the fixed mold 33. . Similarly, the first inner slide core 41 is formed with a mold matching surface 41j that is perpendicular to the mold matching surface 41i and that is matched with the mold matching surface 33b of the fixed mold 33.

  As shown in FIG. 7A, an arc-shaped ridge portion forming groove 41k for forming a ridge portion 21j of the console box 21 is formed on the lower end forming surface 41h of the first inner slide core 41. Is formed. As shown in FIG. 7 (b), the distance E from the parting line PL to the protrusion forming groove 41k is the protrusion part from the parting line PL of the left flange part 21f described in FIG. 1 (b). The same dimension as the distance E up to 21j is set. Further, the depth of the protruding portion forming groove 41k is set to the same dimension as the height H of the protruding portion 21j.

  The distance E from the parting line PL to the ridge portion 21j shown in FIGS. 1B and 6B is set in a range of 0.2 mm to 2.0 mm, and the ridge portion 21j has the above-mentioned distance E. The height H is set in the range of 0.2 mm to 3.0 mm. When the distance E is 0.2 mm or less, the formation width in the vertical direction of the tip lower molding surface 41h of the first inner slide core 41 shown in FIG. 7B becomes too short, and the tip lower molding surface 41h. This is not desirable because the rigidity of the steel is reduced. When the distance E is 2.0 mm or more, the distance from the parting line PL of the left flange portion 21f to the ridge portion 21j becomes too long, and there is a high possibility that a human finger contacts the step portion 21k. This is not desirable. If the height H of the protruding portion 21j is 0.2 mm or less, the possibility that a human finger will come into contact with the stepped portion 21k is not desirable. If the height H is 3.0 mm or more, the protruding portion 21j is too conspicuous and the appearance of the left flange portion 21f is impaired. More preferably, the distance E is set in a range of 0.5 mm to 1.0 mm, and the height H is set in a range of 0.4 mm to 1.0 mm.

Next, the operation when the console box 21 is molded using the molding apparatus 30 configured as described above will be described.
In FIG. 4, the outer mold 31 and the inner mold 32 are assembled and set at a molding position, and molten resin is injected from a not-shown inlet into a cavity formed by the outer mold 31 and the inner mold 32. A state where the console box 21 is formed by the cavity is shown.

  In this state, when the inner slide cores 41 and 42 are released, the intermediate core 43 is pulled up via the release rod 46 located at the center in FIG. With this operation, as shown in FIG. 8, the first and second inner slide cores 41g are engaged by the engagement relationship between the dovetail protrusions 41g and the dovetail grooves 43f and the dovetail groove 42g and the dovetail protrusions 43g extending in an inclined manner. , 42 are slid horizontally and approach each other without being moved upward. When the intermediate core 43 is lifted to a predetermined intermediate height position, the dovetail protrusions 41g of the first inner slide core 41 are engaged with the dovetail grooves 42g of the second inner slide core 42 as shown in FIG. Combined.

  In this state, as shown in FIG. 8, the undercut molding surfaces 41 e and 42 e of the first and second inner slide cores 41 and 42 are spaced inward from the flange portions 21 f and 21 g of the console box 21. The inner slide cores 41 and 42 are held in a mold-releasing position that can be pulled upward. Thereafter, when the release rods 44 to 46 are pulled up synchronously, the inner slide cores 41 and 42 and the intermediate core 43 are pulled away from the internal space of the console box 21.

  Next, the movable mold 34 and the outer slide cores 35 and 36 constituting the outer mold 31 are released outward, and the console box 21 as a resin product is taken out from the molding apparatus 30 in this state, thereby forming the mold. The work is finished.

When the inner mold 32 is set at the molding position of the next console box 21, an operation opposite to the above-described mold release operation may be performed.
Next, the effects of the console box 21 and the molding apparatus 30 configured as described above will be listed together with the configuration.

  (1) In this embodiment, as shown in FIG. 1, the ridge portion is located at a position separated by a predetermined distance E below the parting line PL of the distal end surface S2 of the left flange portion 21f of the console box 21. 21j was integrally formed inward. For this reason, as shown in FIG. 6B and FIG. 7B, a stepped portion R is generated in the parting line PL due to wear of the mold matching surfaces 33b and 41j of the fixed mold 33 and the first inner slide core 41, With this stepped portion R, a stepped portion 21k is formed in the vicinity of the parting line PL on the front end surface S2 of the left flange portion 21f, as shown in FIGS. 1 (b) and 7 (b). Also in this case, when a small article is put into and taken out of the console box 21, before the human fingers come into contact with the stepped portion 21k, the cross section is brought into contact with the arc-shaped protruding portion 21j, and the cross section is Since the stepped portion 21k sharpened at right angles is not touched, it does not feel uncomfortable and the usability of the console box 21 can be improved.

  (2) In this embodiment, as shown in FIGS. 6 and 7, the console box 21 has a simple configuration in which the protrusion forming groove 41 k is formed on the lower end forming surface 41 h of the first inner slide core 41. The protrusion 21j can be easily formed on the left-side flange portion 21f, and the cost of the molding apparatus can be suppressed.

(Example of change)
In addition, each said embodiment can also be changed and embodied as follows.
-You may make the cross-sectional shape of the protrusion part 21j of the left side flange part 21f of the console box 21 into a shape which has smooth surfaces, such as a semi-elliptical shape other than a semicircular arc shape.

  In addition to the console box 21 of each of the above embodiments, a container having a flange portion directed inwardly at the upper edge of the side plate, or a resin product formed in a channel shape by the bottom plate and the left and right side plates, and a molding apparatus thereof are embodied. Also good.

(A) is the partial expanded sectional view of the left side board and left flange which show one Embodiment which embodied the resin product of this invention in the console box of a motor vehicle, (b), (c) is an expanded cross section which shows a principal part. Figure. The longitudinal cross-sectional view which shows the use condition of a console box. Another vertical sectional view which shows the use condition of a console box. The longitudinal cross-sectional view which shows one Embodiment which actualized the shaping | molding apparatus of this invention to the shaping | molding apparatus of the console box of a motor vehicle. Sectional drawing in the 1-1 line | wire of FIG. (A) (b) is an expanded longitudinal cross-sectional view which shows the principal part of a shaping | molding apparatus. (A) (b) is an expanded longitudinal cross-sectional view which shows the principal part of a shaping | molding apparatus. The longitudinal cross-sectional view explaining the mold release operation | movement of a shaping | molding apparatus. Sectional drawing in the 2-2 line of FIG. The expanded longitudinal cross-sectional view which shows the left side flange part of the conventional console box. (A) (b) is the elements on larger scale of the conventional console box shaping | molding apparatus.

Explanation of symbols

  E ... Distance, H ... Height, PL ... Parting line, S1 ... Top surface, S2 ... Tip surface, S3 ... Undercut surface, 21 ... Console box, 21a ... Bottom plate, 21f, 21g ... Flange, 21j ... Projection , 30 ... molding device, 31 ... outer mold, 32 ... inner mold, 33d ... tip upper molding surface, 41, 42 ... inner slide core, 41e, 42e ... undercut molding surface, 41h ... lower tip molding surface , 41k ... ridge forming grooves.

Claims (6)

In a resin product in which side plates are integrally formed on the left and right side portions of the bottom plate, and a flange portion that is directed inward is integrally formed on the upper end portions of both side plates,
A ridge with a smooth surface is inwardly positioned at a predetermined distance downward from a parting line set at an intermediate height position in the vertical direction with respect to the opposite end surfaces of the flange portions. A resin product that is integrally molded at a predetermined height toward the front. In Claim 1, the distance from the parting line to the ridge is set in a range of 0.2 mm to 2.0 mm, and the height of the ridge is 0.2 mm to 3.0 mm. Resin product characterized by being set in range. 3. The resin product according to claim 2, wherein the distance is set in a range of 0.5 mm to 1.0 mm, and the height is set in a range of 0.4 mm to 1.0 mm. The ridge portion according to any one of claims 1 to 3, wherein a cross section of the ridge portion is formed in a semicircular arc shape, and a lower end edge of the ridge portion is smoothly connected to a lower surface of the flange portion, that is, an undercut surface. Resin products characterized by Molding device with an outer mold and an inner mold, used to mold resin products with side plates integrally formed on the left and right sides of the bottom plate and an inwardly directed flange on the upper end of both plates In
The outer mold includes a bottom plate mold that molds the bottom surface of the bottom plate, a side plate mold that molds the outer surfaces of both side plates, a molding surface that molds the top surface of the flange portion of the resin product, and a tip of the flange portion. A flange part molding die having a tip upper molding surface for molding a tip surface above the parting line set on the tip surface among the surfaces;
The inner mold includes a pair of left and right inner slide cores, and both inner slide cores are a molding surface that molds the upper surface of the bottom plate, a molding surface that molds the inner surfaces of both side plates, and the lower surface of the flange portion, An undercut molding surface that molds the undercut surface, and a lower tip molding surface that molds a tip surface below the parting line among the tip surfaces of the flange portion,
A protrusion forming groove for forming a protrusion on the front end surface of the flange portion is formed at a predetermined distance downward from the parting line with respect to the lower end forming surface of the inner slide core. A resin product molding apparatus characterized by the above. 6. The apparatus for molding a resin product according to claim 5, wherein the resin product is a console box used in an automobile.

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