TW201410436A - Injection molding embedd-forming auxiliary device and injection molding technique thereof - Google Patents

Abstract

The invention discloses an injection molding embedd-forming auxiliary device and an injection molding technique thereof. The auxiliary device comprises a first main arm, a second main arm and a plurality of cross arms, wherein the second main arm and the first main arm are symmetrically arranged in parallel; and the plurality of cross arms are connected with the first main arm and the second main arm and are combined with the first main arm and the second main arm in an integrated molding mode, so as to form a plurality of segmentation accommodating spaces. The injection molding technique comprises the following steps: molding a metal piece; molding a metal carrier, so as to obtain a horizontal rubber product in an injection molding manner in the first stage; positioning the metal piece on the metal carrier; fixing the metal carrier through a positioning mechanism; carrying out secondary injection molding on the metal piece in a die cavity of a die impression; and cutting, ejecting and separating. The auxiliary device and the injection molding technique thereof enables plastic melt in the die impression to be more smooth, so that the working efficiency is improved, and raw materials are saved.

Description

Injection molding and molding auxiliary device and its injection molding process

The invention relates to an injection molding and insert molding auxiliary device and an injection molding process thereof, in particular to an auxiliary device for fixing a metal member and an injection molding process for performing secondary injection molding using the auxiliary device.

At present, the connector industry generally adopts two manufacturing methods for the combination of metal parts and plastic parts, namely, the insertion method and the injection molding. Specifically, the insertion molding is to insert the metal pieces into the appropriate positions of the plastic parts. Then, at the end of the metal piece, the pressure is applied by the jig to press the metal piece, and in combination with the plastic, this is generally suitable for a bulky connector. However, as the size of the connector becomes smaller and smaller, the spacing of the metal parts becomes smaller and smaller, and the manufacturing method of the insertion method causes an increase in the defective rate of the finished product. Therefore, the practitioner begins to insert the metal part into the plastic mold by injection molding. Positioning in a predetermined position in the cavity, and then molding with the plastic part, to achieve the effect of two kinds of combined molding, this manufacturing method is particularly suitable for products with small volume and high precision.

The current injection molding injection molding manufacturing method is divided into two types: automatic feeding mode and non-automatic feeding mode. Among them, the automatic feeding mode is to continuously feed the long metal pieces through the automatic feeding device to complete the continuous molding mode: Instead of the automatic feeding method, the long-shaped metal parts are first cut into the required metal parts of the molded product, and then the metal parts are manually placed into the cavity. However, in the automatic feeding molding, since the long metal pieces are continuously formed and then cut and separated, it is necessary to set a certain number of products in each of the two adjacent products. The spacing is to facilitate the forming and cutting, then the same metal parts in the design of the stamping process, each predetermined number of metal parts must also be set to a certain spacing as a compartmentalization. This makes some metal parts between the gaps waste due to waste. The smaller the product to be molded, the more raw materials are wasted. This is not conducive to cost reduction in the era of high raw materials. A major defect; in addition, the smaller the product, the more precise it is to manufacture, and the smaller the metal parts used. When feeding a double-feed strip, this requires the speed of the metal parts on both sides to be consistent ( Automatic feeding of metal parts can be divided into single-side feeding and double-feed feeding), so more belts must be left on the side of the metal parts; and when the metal parts used are small, this kind of material The situation becomes difficult to control, especially in the case of mass production, the two rows of metal parts are easily misplaced and misaligned, and the molded product is small, and it is not easy to be found after the misalignment, thus causing batch waves. Praise is inevitable. For the non-automatic molding method, since the positioning element is directly placed into the cavity, the speed of the operation is naturally slow, which is extremely disadvantageous for improving productivity today, and further, for small metal parts, it is placed. The speed is slower, so that it is possible to reduce the temperature in the cavity due to the long time of the insertion, which affects the quality of the product.

The object of the present invention is to provide an injection molding and insert molding auxiliary device and an injection molding process thereof. In the injection molding process, the injection molding and inserting auxiliary device fixes the metal member, and is transported into the mold through the transmission mechanism for secondary injection molding to complete the injection molding and insert molding product. .

Another object of the present invention is to provide an injection molding and insert molding auxiliary device and an injection molding process thereof. In the injection molding process, the auxiliary device is used to cut the metal parts and then form the metal parts, thereby avoiding the space design of the metal parts. Save raw materials.

Still another object of the present invention is to perform overmolding using the auxiliary device. The injection molding process makes the plastic melt in the cavity more smooth, reducing bad conditions and improving work efficiency.

In order to achieve the above object, the present invention provides an injection molding and molding auxiliary device and an injection molding process thereof, the injection molding and molding auxiliary device including a first main arm and a second main arm which are arranged in parallel and symmetrically with the first main arm a plurality of cross arms connecting the first main arm and the second main arm and integrally formed with the first main arm and the second main arm to form a plurality of compartments accommodating spaces, wherein Each of the two sides of the cross arm has a protrusion, the protrusion includes a through hole, and the first main arm and the second main arm further comprise a plurality of positioning holes, and the two between the two cross arms The first main arm and the second main arm further include at least one positioning post, and the first main arm and the second main arm between the two cross arms further include a retaining hole. The injection molding inserting aid is an elongated metal carrier.

The injection molding process of the injection molding and molding auxiliary device of the present invention comprises the following steps: Step 1: The long metal parts which are formed by stamping are cut into a predetermined number of metal parts by a cutter; Step 2: the length of the stamping and forming The strip-shaped metal carrier enters the first cavity through the transport device, and is injection molded into a first-stage plastic product of a level and is sent to the outside of the mold; and in step 3, the metal member has a first punching hole fixed to the metal carrier On the positioning post of the first main arm and the second main arm, the front end portion of the metal member is limited to the receiving groove of the first stage plastic product; and in step 4, the transport device sends the metal carrier to which the metal member is fixed to a predetermined position in the second cavity, the positioning mechanism provided by the mold fixes the metal carrier; in step 5, the metal part is injection-molded by the cavity in the cavity, and the molded product is attached to the metal On the carrier, the output device is used to transfer to the outside of the mold; in step 6, the cutter cuts the product, and the residual portion of the metal member is separated from the metal carrier to obtain a product.

The invention has the beneficial effects of using the auxiliary device to clamp the positioning metal piece and transferring it to a predetermined position in the cavity for molding, instead of directly using the material of the metal piece for positioning transmission to prevent metal The parts are misaligned during the transmission process, and the metal parts are no longer required to be space-spaced during manufacture, thereby greatly saving raw materials. In the injection molding process, the secondary injection molding process makes the plastic melt in the cavity more smooth, reduces the bad state, and improves the work efficiency.

For a fuller understanding of the features, features and aspects of the present invention, reference should be made to the accompanying drawings.

1‧‧‧First main arm

2‧‧‧second main arm

3‧‧‧cross arm

4‧‧‧ accommodating space

5‧‧‧Bumps

6‧‧‧Positioning holes

7‧‧‧Positioning column

8‧‧‧Replacement hole

9‧‧‧through hole

10‧‧‧Metal parts

11‧‧‧First punching

12‧‧‧Second punching

13‧‧‧End Department

14‧‧‧Products

1 is a perspective view of a metal insert of an injection molding and insert molding auxiliary device and an injection molding process thereof; FIG. 2 is a plan view of an injection molding and insert molding auxiliary device of the present invention and an injection molding process thereof; The plan view of the injection molding process; the fourth figure is a schematic diagram of the injection molding and molding auxiliary device of the present invention and the injection molding process thereof; FIG. 5 is a schematic view of the injection molding and molding auxiliary device of the present invention and the injection molding process thereof; A schematic diagram of an insert molding auxiliary device and an injection molding process thereof; and FIG. 7 is a schematic view of the injection molding and insert molding auxiliary device of the present invention and an injection molding process thereof.

The present invention will be further described with reference to the accompanying drawings, so that those of ordinary skill in the art can refer

Please refer to Figures 1, 2 and 3 for the injection molding and inserting auxiliary device according to the present invention. A first main arm 1 is included; a second main arm 2 is disposed in parallel with the first main arm 1 and symmetrically disposed; a plurality of cross arms 3 connecting the first main arm 1 and the second main arm 2, and The first main arm 1 and the second main arm 2 are integrally formed, are durable and simple in manufacturing process, and do not need to be separately installed, the plurality of cross arms 3 and the first main arm 1 and the first The main arm 2 forms a plurality of compartments accommodating spaces 4. The two sides of the cross arm 3 respectively have a bump 5, so that the compartment accommodating space 4 has a "work" shape, and the bump 5 further includes a through hole 9 through which the plastic is passed during the injection molding process. The through hole 9 is injected into the mold, and the bump 5 is plastically wrapped in the insert molding, and the fixing plastic functions to carry the pulling platform. The injection molding and inserting auxiliary device of the present invention is preferably an elongated metal carrier carrying the metal member 10, the metal member 10 further comprising a first punching hole 11 and a second punching hole 12, the metal carrier A main arm 1 and the second main arm 2 further include a plurality of positioning holes 6 fixed in a positioning mechanism in the mold during injection molding; between the two cross arms 3 The main arm 1 and the second main arm 2 further include at least one positioning post 7 which is interference-fitted and clamped with the first punching position 11 of the metal member 10 for the metal member 10 Fixed; the first main arm 1 and the second main arm 2 between the two cross arms 3 further include a retaining hole 8 for cutting the formed product from the metal carrier. There is enough space for the position to separate the residual metal parts from the metal carrier, thereby achieving the recycling of the metal carrier and saving cost.

As shown in FIG. 4, an injection molding process using the injection molding and inserting auxiliary device according to the present invention includes the following steps: Step 1. The elongated metal carrier that has been stamped and formed enters the first mode through a transport device. In the cavity, the first stage plastic product is injection-molded and conveyed to the outside of the mold; in step 2, the long metal parts which are formed by stamping are cut into a predetermined number of metal parts 10 by a cutter; step 3, please refer to the figure 5, the metal member has a first hole position 11 fixed on the positioning post 7 of the first main arm 1 and the second main arm 2 of the metal carrier, gold The front end portion 13 of the member is limited to the receiving groove of the first stage plastic product; in step 4, the conveying device sends the metal carrier to which the metal member 10 is fixed to a predetermined position in the second cavity, and the mold is provided The positioning mechanism fixes the metal carrier through the positioning hole 6; Step 5. Referring to FIG. 6, the metal member 10 is injection-molded by the cavity in the cavity, and the molded product is attached to the metal. On the carrier, the output device is used to transfer to the outside of the mold; in step 6, the cutter cuts the product, and the residual portion of the metal member is separated from the metal carrier to obtain the product 14.

The auxiliary device is used to clamp the positioning metal piece and transmit it to a predetermined position in the cavity for molding, instead of directly using the material of the metal piece for positioning transmission, to prevent the metal piece from occurring during the transmission process. The misalignment phenomenon, at the same time, the metal parts are no longer required to be space-spaced in the manufacture, which greatly saves raw materials. In the injection molding process, in the injection molding process, the secondary injection molding method makes the plastic melt in the cavity more smooth, reduces the bad state, and improves the work efficiency.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structural changes of the present invention and the contents of the drawings are all included in the present invention. Within the scope of the rights, it is given to Chen Ming.

1‧‧‧First main arm

2‧‧‧second main arm

3‧‧‧cross arm

4‧‧‧ accommodating space

5‧‧‧Bumps

6‧‧‧Positioning holes

7‧‧‧Positioning column

8‧‧‧Replacement hole

9‧‧‧through hole

10‧‧‧Metal parts

11‧‧‧First punching

12‧‧‧Second punching

13‧‧‧End Department

Claims (8)

An injection molding inserting auxiliary device includes: a first main arm; a second main arm disposed in parallel with the first main arm and symmetrically disposed; and a plurality of cross arms connecting the first main arm and the second main arm And integrally formed with the first main arm and the second main arm to form a plurality of compartments accommodating spaces. The injection molding inserting auxiliary device according to claim 1, wherein the two sides of the cross arm respectively have a bump. The injection molding inserting auxiliary device according to claim 2, wherein the bump comprises a through hole. The injection molding inserting auxiliary device of claim 2, wherein the first main arm and the second main arm further comprise a plurality of positioning holes. The injection molding inserting aid according to claim 4, wherein the first main arm and the second main arm between the two cross arms further comprise at least one positioning post. The injection molding inserting auxiliary device according to claim 5, wherein the first main arm and the second main arm between the two cross arms further include a retaining hole. The injection molding inserting aid according to claim 6, wherein the injection molding auxiliary device is an elongated metal carrier. An injection molding process using the injection molding and inserting auxiliary device according to claim 7 of the patent application, the steps comprising the following steps: Step 1. The strip-shaped elongated metal component is cut into a predetermined number of metal members by a cutter; Step 2: the elongated metal carrier that has been stamped and formed enters the first cavity through a transport device, and is injection molded into a first-stage plastic product of a standard level and is sent to the outside of the mold; and in step 3, the metal member has a a punching hole is fixed on the positioning post of the first main arm and the second main arm of the metal carrier, and the front end portion of the metal member is limited to the receiving groove of the first stage plastic product; in step 4, the conveying device is fixed The metal carrier having the metal member is sent to a predetermined position in the second cavity, and the positioning mechanism provided in the mold fixes the metal carrier; and in step 5, the metal member is injection molded by using the mold core in the cavity twice. The injection molded product is attached to the metal carrier and transferred to the outside by means of an output device; and in step 6, the cutter cuts the product, and the residual portion of the metal member is separated from the metal carrier. Get the product.