KR101434677B1 - Forming method using pressing and injection-molding multifunction die, forming apparatus provided with pressing and injection-molding multifunction die, and metal-resin molded product formed by the method or the apparatus - Google Patents

Abstract

A press-mold composite molding method for molding a metal resin molded article by integrating a metal and a resin is characterized in that, after the resin mold for the metal, the metal resin molded article is pressed and mold And forming the metal-resin-formed product by performing at least one of the steps.

Press part, bridge part, composite molding machine, resin dryer, thermostat

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-mold composite molding method, an apparatus therefor, and a metal-resin molded article formed by the same. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press- BY THE METHOD OR THE APPARATUS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press-mold composite molding method and apparatus for molding a metal resin molded article and a metal resin molded article formed by the method. More specifically, the present invention relates to a terminal pin in which a plurality of metal terminal fins are juxtaposed from one end of a chip-shaped resin portion and a plurality of terminal fins horizontally bent and projected from the other end are juxtaposed, To a press-mold composite type molding method and apparatus for molding a metal resin molded article such as an attached connector, and a metal resin molded article molded by the method.

4, in order to produce a metal resin molded article in which a metal and a resin are integrated in a hoop molding in a forming process by continuous machining, the metal plate M is first taken out from the supply reel L wound with the metal plate M The metal plate M is pulled out in the tensile state, inserted into the press die of the press molding machine P1, punched, and wound in the A region in the form of a hoop. The metallic plate M of the punched semi-finished product is inserted into the resin mold of the resin molding machine Q and the resin is molded in the predetermined area so that the metal plate M of the semi-finished product and the resin are integrated, . Thereafter, the metal resin molded product wound in the hoop shape in the area B is inserted into the press mold of the press molding machine P2, pressed, and cut from the metal plate M to be the final molded product.

Further, as described in Japanese Patent Application Laid-Open No. 8-2557, there is a technique of an insert molding method and an insert molding apparatus which integrally process a metal and a resin. That is, in the above-described insert molding method, an insert member made of metal to be continuously fed and fed is subjected to press working and resin molding, and cutting is performed for every predetermined section to successively mold the insert molded product. Closing operation of the molding die is performed in conjunction with the opening and closing operation of the mold, and the press working and the cutting operation are performed at the opening and closing part integrally with the molding die.

In the above-described insertion molding apparatus, a resin molding section for performing resin molding is provided in an insertion member continuously supplied and fed from one side to the other side of the molding die for opening and closing operations, and at least the upstream side The first predetermined position of the insertion member is resin-molded by the resin molding section by the opening and closing operation of the molding die, and the second predetermined position is formed by the press forming process, And the third predetermined position is cut at the same time by the cutting processing portion so that the opening and closing of the molding die and the insert molding press-processed by the feeding and feeding of the insertion member are sequentially cut out and discharged.

However, in the insertion molding method and the insertion molding apparatus in related fields, it is necessary to feed the metal plate in a state of having a joint (metal bridge) in a part for transferring the product, and to connect the metal bridge to the final process. There are problems such as restriction of the bending position of the metal portion and generation of the stepped portion of the cut surface of the metal bridge. In the technique disclosed in Japanese Patent Application Laid-Open No. 8-2557, a product is fixed by a metal bridge, and an insert is continuously and continuously transferred to a press working portion, a resin mold portion, and a cutting portion to form a product. In addition, the insert molding apparatus according to the technique disclosed in Japanese Patent Application Laid-Open No. 8-2557 has a problem in that it is extremely complicated and expensive.

The present invention is characterized in that after the resin mold processing, the joint portion for transferring the product is replaced with a resin bridge formed at the time of resin mold processing from the metal bridge, so that there is no restriction on the bending position of the metal portion, And a metallic resin molded article molded by the method.

A first aspect of the present invention relates to a press-mold composite molding method for molding a metal resin molded article by integrating a metal and a resin. In the press-mold composite molding method, at least one of press working and mold processing is performed on the metal in a state that the metal resin molded article is supported by the resin after the resin mold for the metal, And molding the formed product.

According to the above-described aspect, since the metal resin molded article is molded by performing at least one of press working and mold working on the metal in a state in which the metal resin molded article is supported by only the resin after the resin mold processing on the metal, It is possible to eliminate the restriction on the machining position of the part.

In the above-described aspect, at least one of the metal pressing and the molding may be performed on the end edge of the metal while the metal resin molded article is supported by only the resin.

According to the above configuration, various processes such as bending, twisting, and pressing can be performed on the end edge portions of the metal that is not resin-molded.

In the above aspect, the metal resin molded article may be taken out by cutting the resin bridge portion supporting the metal resin molded article while the metal resin molded article is supported by only the resin.

According to the above configuration, the metal resin molded article can be obtained by cutting the resin bridge section after completing the metal resin molded article in a state in which the metal resin molded article is supported only by the resin.

In the above configuration, the resin piece of the resin bridge portion remaining on the metal may be removed after cutting the resin bridge portion.

According to the above configuration, the resin piece remaining on a part of the metal is removed from the metal plate, so that the metal plate can be reused in the state in which the resin is not mixed.

In the above configuration, the resin bridge portion is provided with a rib.

According to the configuration described above, the rib is formed by providing a concave-convex shape in the resin bridge portion or by providing a projection or the like, so that the bending, twisting, compression bonding, punching It is possible to prevent the metal plate from falling off even if a load is generated in the molded product due to processing or the like.

The press-mold composite forming method may further comprise cooling the resin bridge portion by a predetermined cooling idling time.

According to the above-described configuration, by setting the cooling idling time, it is possible to suppress the deformation of the cut surface, the machining step and the like, and shorten the cycle time.

In the above configuration, the metal pressing and resin molding may be performed simultaneously in a single molding die.

According to the above configuration, since the metal and the resin are integrated by performing the pressing on the metal and the molding of the resin simultaneously in a single molding die, the accuracy of the processing position can be improved and the working efficiency can be improved.

In the above-described configuration, the metal pressing and resin molding may be performed continuously by hoop forming.

According to the above-described constitution, the metal and the resin can be integrated by performing the press working on the metal and the mold working of the resin continuously by the hoop forming, and the working efficiency can be improved.

A second aspect of the present invention relates to a press-mold composite-type molding apparatus for molding a metal resin molded article by integrating a metal and a resin. The press-mold composite-type molding apparatus includes a press section for processing a metal, and a resin mold-molding section for integrally molding the metal with the resin in a bridged state with respect to the metal.

According to the above-described aspect, since the inserted metal is subjected to processing such as punching, bending, twisting, and pressing in the state of bridging the metal with only the resin, restrictions on the processing position of the metal part can be eliminated, Products can be manufactured.

In the above-described aspect, the press section may be provided on each of the upstream side and the downstream side of the metal in the feeding direction with the resin mold forming section interposed therebetween.

According to the above-described configuration, the first press section disposed on the upstream side in the transport direction of the metal, the resin mold forming section for integrally molding the resin with the metal so that the metal resin molded article is supported by the resin, Since the second press portion is disposed on the downstream side in the metal conveyance direction so as to perform bending, twisting, squeezing, or the like of metal as a bridge state of the metal, the working efficiency can be improved.

In the above-described aspect, the central portion of the molding die in which the resin mold-molding section is disposed may have a resin material injection hole for supplying the resin to the molding die.

According to the above configuration, since the resin material injection hole is provided in the center portion of the mold having the resin mold forming portion, the balance of the mold can be obtained. Therefore, the first press and the second The pressure load balance at the time of the press operation of each of the press portions can be taken.

In the above-described aspect, the press-mold composite molding apparatus may further include a temperature controller for controlling the temperature of the entire molding die including the resin mold molding section.

According to the above configuration, since the temperature regulator for regulating the temperature of the entire molding die including the resin mold molding section is provided, it is possible to prevent the occurrence of thermal distortion such as expansion of the metal due to heat, Lt; RTI ID = 0.0 > of < / RTI >

In the above-described aspect, the press-mold composite molding apparatus may further include a hot runner controller for preventing the occurrence of runners in the resin mold molding section.

According to the above configuration, since the hot runner controller for preventing the occurrence of runners in the resin mold forming section is provided, the runner removing operation from the die is not required, and the machining speed can be further improved.

A third aspect of the present invention relates to a metal-made resin molded article molded by the press-mold composite molding method.

According to the above-described configuration, the processing accuracy is extremely high, and complicated processing is also possible, and an inexpensive molded article can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and additional features and advantages of the present invention will become apparent from the following description with reference to the accompanying drawings, wherein like reference numerals designate like elements.

Hereinafter, a composite molding apparatus according to an embodiment of the present invention will be described with reference to the drawings.

A press-mold composite molding machine according to an embodiment of the present invention is characterized in that a plurality of metal terminal fins are juxtaposed from one end of a chip-like resin portion and a plurality of terminal fins projecting horizontally from the other end are juxtaposed (Hereinafter, simply referred to as a molded product) such as a connector to which a terminal pin is attached.

1, the apparatus comprises a supply reel L in which a metal plate M is wound in a hoop shape, a metal plate M drawn out from the supply reel L is inserted by a metal plate feeder (P) for forming a molded article, a resin dryer (T) having a conveying roller for conveying the resin material to the composite type molding machine (P), a resin dryer A temperature controller (V) for temperature control, and a hot runner controller (H) for preventing the occurrence of runners in the composite molding machine (P).

The composite molding machine P is arranged such that the upper movable die 2 is movable up and down relative to the lower fixed die 1 as shown in Figs. 2 (a) and 2 (b) , And the metal plate (M) is intermittently inserted between the upper and lower dies (1, 2) in accordance with the lifting and lowering timing of the movable die (2). The first press portion 3 on the upstream side in the conveying direction of the metal plate M with respect to the resin mold forming portion 5 and the first press portion 3 on the upstream side of the resin mold forming portion 5 ) And the second press section 4 on the downstream side in the conveying direction of the metal plate M with respect to the resin mold forming section 5 are integrally formed at the time of press-molding in the state of being fixed on the same plane It is intensive in a single working mold.

The metal plate M is subjected to a press working and resin mold by the upper and lower dies 1 and 2 at predetermined intervals in the longitudinal direction so that a plurality of molded products are continuously processed and formed. As a result, as shown in FIG. 2 (b), the composite molding machine P is provided with the metal plate feeding device 6 for feeding the metal plate M into the shape with a length that can be arbitrarily set. In this embodiment, the metal plate feeding device 6 operates air as a driving source, and the feeding timing is controlled by a signal (voltage) from the complex-type molding machine P so that the metal plate M is moved from the left- And is intermittently fed out at a predetermined interval.

A resin material injection hole 8 communicating with the resin mold forming portion 5 from the resin material filling device 7 provided on the upper side of the composite molding machine P is provided at the center portion of the movable die 2 do. The resin material supplied to the resin recharging device 7 is conveyed from the resin dryer T. The resin material is injected into the resin mold forming section 5 from the resin material injection hole 8 in conjunction with the downward movement of the movable die 2 and is molded integrally with the metal plate M. [

Next, an example of a method of molding a metal-made resin molded article by the composite-type molding apparatus according to the embodiment of the present invention will be described. The process by this apparatus is carried out on the basis of a hoop forming process and is carried out by press working such as punching and bending of the metal plate M by the first press section 3 and pressing of the resin by the central resin mold forming section 5. [ Molding process, and a pressing process such as punching and bending of metal by the second press section 4.

3 (a) and 3 (b), in the first press section 3 on the upstream side in the conveyance direction of the metal plate M, the metal plate M is subjected to punching, bending, Twisting, pressing, and the like. In the present embodiment, at the time of transferring the metal plate M, the holes 9 for defining a preset conveyance amount are respectively drilled in the opposite corner portions of the metal plate M in the short direction. Then, a first punching process (10) is performed on the metal plate (M) to obtain the shape of the molded product. Further, in the first punching process 10, a close machining portion 11 such as a small hole is formed in order to enhance the adhesion between the metal plate M and the resin when forming the resin bridge in a later process. The contact machining portion 11 is selected to have a suitable shape such as a concave portion or a notch in addition to a small hole.

Next, a second punching process (12) is performed on the metal plate (M) to produce a molded product. In the second punching process 12, a metal bridge 13 is formed in a part of the metal plate M to connect the metal plate M and the molded product. Thereafter, in order to obtain the shape of the molded product, the rectangular bending process 14 is performed in the present embodiment. After that, a third punching process (15) is performed to obtain the shape of the molded product. In the third punching process (15), a part of the metal bridge (13) is punched.

After various processing steps of only the metal part, the resin is molded into the molded part of the metal part. At this time, the resin-coated portion 11 formed on the metal plate M is covered with the resin so that the metal plate M and the resin are firmly integrated and the resin bridge 16 is formed. In the present embodiment, a resin layer penetrating the front and back surfaces of the metal plate M is formed in the tightly processed portion 11. As a result, a molded article made of a metal and a resin and a resin bridge 16 are formed. In this step, the metal bridge 13 and the resin bridge 16 coexist.

As shown in Fig. 3 (d), the resin bridge 16 is reinforced on the resin bridge 16, and the concavity and convexity or protrusions for preventing the molded product from falling off the metal plate M during the manufacturing process Shaped ribs 17 are provided.

In the above process, the temperature regulator (V) is operated to adjust the resin mold, and the entire mold is warmed with circulating hot water or the like. For example, hot water of about 80 ° C is used in nylon and the like. Thus, even if the thickness of the resin mold is large, resin processing can be performed for about 3 seconds to 10 seconds. Immediately after the resin molding step or by providing an idling step (18), the cooling time of the resin part is secured and the cycle time is shortened. In this mold processing, the runner is prevented from being generated in the resin mold forming portion by the operation of the hot runner controller H shown in Fig.

In the second press section 4 of the subsequent step, various kinds of processing such as final punching, bending, twisting, and pressing are performed. The metal bridge 13 is cut by the cutting process 19 so as to be in the state of only the resin bridge 16 and various kinds of processing such as bending, twisting, and pressing are performed to form a molded product. This is because if the bridge 13 of the metal plate M is not removed, various kinds of processing of the metal into the metal bridge 13 can not be performed reasonably. After the cutting process 19, a rectangular bending process 20 is performed in this embodiment to obtain a molded product.

Further, in this embodiment, a cutting process (21) is performed on the resin portion constituting the resin bridge 16 after the right angle bending process (20). Thereby, the metal and the resin are integrated and a molded product in which the metal is molded into a predetermined shape is produced. At this time, the remaining portion of the metal plate M where the molded product is punched and a portion of the resin bridge 16 remain. That is, a portion of the metal plate M remaining after cutting the molded article remains in a state in which the resin adheres. By removing only the resin part from the metal plate M, it is possible to reuse the metal plate M without the resin.

As a method for removing only the resin part from the metal plate M, for example, a part of the resin bridge 16 left on the metal plate M and a part of the metal plate M can be removed by punching. In addition, since only a small amount of the resin adheres to the front surface and back surface between the metal plate M and the metal plate M, only the resin portion can be removed easily. Particularly, in the case where the contact machining portion 11 has a U-groove shape or the contact machining portion 11 is a notch or the like shown in Fig. 3 (c), the resin left on the metal plate M is made of the metal plate M It can be removed by sliding it toward the center in the short direction.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a composite molding apparatus according to an embodiment of the present invention. Fig.

Fig. 2 (a) is a partial cross-sectional view showing a state in which a composite mold of a composite mold forming apparatus according to an embodiment of the present invention is closed, and Fig. 2 (b) Fig. 7 is a partially cutaway cross-sectional view showing a state in which the complex type of the apparatus is open;

3 (a) to 3 (e) illustrate a molding process of a metal-made resin product by the composite molding apparatus according to the embodiment of the present invention. FIG. 3 (a) FIG. 3B is an enlarged plan view of part A in FIG. 3A, FIG. 3C is an enlarged plan view of part B in FIG. 3B, Fig. 3 (e) is a side view of Fig. 3 (d). Fig.

Fig. 4 is a schematic view showing the outline of a composite molding apparatus in the related art. Fig.

Description of the Related Art

1: Fixed die

2: movable die

5: Molded resin molding

6: Metal plate feed device

7: Resin filling device

8: Resin material injection hole

L: supply reel

M: metal plate

P: Composite molding machine

T: Resin dryer

V: Temperature regulator

Claims (16)

In a press-mold composite molding method for molding a metal resin molded article by integrating a metal (M) and a resin, Forming a body portion on the metal (M) by punching, Molding the resin in the main body, After the main body portion is resin-molded, the main body portion is subjected to at least one of press working and mold working in a state in which the main body portion is supported by the metal other than the main body portion with only the resin, Wherein the molding is carried out by a press molding method. The press-mold composite forming method according to claim 1, wherein at least one of the press working and the mold working is performed at an end edge portion of the metal (M) in a state in which the metal resin molded article is supported only by the resin. The press-mold composite forming method according to claim 1, wherein the metal resin molded article is taken out by cutting a resin bridge portion that supports the metal resin molded article while the metal resin molded article is supported only by the resin. The press-mold composite forming method according to claim 3, wherein the resin piece of the resin bridge portion remaining in the metal (M) is removed after cutting the resin bridge portion. The press-mold composite molding method according to claim 3, wherein a rib is provided in the resin bridge portion. The press-mold composite forming method according to claim 3, further comprising cooling the resin bridge portion by a predetermined cooling idling time. The press-mold composite molding method according to claim 1, wherein the metal (M) is subjected to press working and resin mold working simultaneously in a single molding mold. The press-mold composite forming method according to claim 1, wherein the metal (M) is subjected to press working and resin mold working continuously by hoop forming. In a press-mold composite molding method for molding a metal resin molded article by integrating a metal (M) and a resin, Punching the metal M to form a body portion and a first bridge portion connecting the body portion and the metal M, Resin-molds the main body portion and a second bridge portion connecting the main body portion and the metal, Cutting the first bridge portion, And molding the metal resin molded article by performing at least one of press working and mold working on the main body portion. In the press-mold composite-type molding apparatus for molding a metal resin molded article by integrating the metal (M) and a resin, Press portions 3 and 4 for machining the metal M, And a resin mold forming part (5) for integrating the main body part with a mold by a resin so that the main body part formed on the metal by the punching process in the press part is supported by the metal other than the main body part with only the resin Press - mold composite molding device. The press machine according to claim 10, wherein the press section (3, 4) comprises a first press section (3) provided on the upstream side in the transport direction of the metal, and a second press section (4) provided on the downstream side in the transport direction of the metal Wherein the press-mold composite molding apparatus comprises: The press-mold composite molding apparatus according to claim 10, wherein a central portion of the mold having the resin mold forming section (5) is provided with a resin material injection hole (6) for supplying the resin to the mold . The press-mold composite-type molding apparatus according to claim 10, further comprising a temperature controller (V) for controlling the temperature of the entire molding die including the resin mold forming section. The press-mold composite-type molding apparatus according to claim 10, further comprising a hot runner controller (H) for preventing the occurrence of runners in the resin mold forming section (5). A press-mold composite-type molding apparatus for molding a metal resin molded article by integrating a metal and a resin, A first press part 3 forming a first bridge part connecting the main body part and the metal M to the metal M, (M) is provided on the downstream side in the conveying direction of the metal (M) with respect to the first press part (3), the body part is integrated with the mold by resin, and the second bridge A resin mold forming section 5 forming a part, And a second press section (4) provided on the downstream side in the conveying direction of the metal (M) with respect to the resin mold forming section (5) and cutting the first bridge section. delete

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