KR102223982B1 - Injection mold system for molding junction module - Google Patents

Abstract

The present invention relates to an injection mold system for molding a connection module box molding a connection module for a vehicle. The injection mold system for molding a connection module box comprises: a mold body including a first mold and a second mold in contact with the first mold, wherein molding cavities corresponding to the connection module are respectively formed on inner peripheral surfaces of the first and second molds in contact with each other; a material supply unit which supplies a molding material to the mold body; and a cooling water supply unit supplying cooling water to the mold body. According to the present invention, it is possible to smooth the flow of the molding material when molding the connection module box, and to improve product quality and increase productivity through uniform rapid cooling through the cooling water.

Description

Injection mold system for molding junction module

The present invention relates to an injection mold system for molding a connection module box, and more particularly, to an injection mold system for molding a connection module box that can more conveniently mold a robust and stable connection module box.

The vehicle junction module is composed of a fuse box, a relay box, and a joint box, and serves to absorb and divide a wire harness.

The vehicle connection module prevents electric fires in the vehicle by protecting the circuit from abnormal overcurrent and stable distribution of the power applied from the vehicle battery under high current, high temperature, high humidity, irregular vibration and shock in the vehicle, and the electric and electronic equipment of the vehicle is under adverse conditions. Also, as it performs a stable function, it is indispensably applied to all vehicles such as hybrid and electric vehicles as well as gasoline vehicles and diesel vehicles currently being produced, and the necessity thereof is increasing.

(Korean Patent Registration No. 10-1830434, February 7, 2018)

An object of the present invention is to provide an injection mold system for molding a connection module box that can more conveniently mold a robust and stable connection module box.

The object of the present invention is not limited to the above-mentioned object, and other objects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

In order to achieve the above object, the injection mold system for molding a connection module box for molding a vehicle connection module according to an embodiment of the present invention includes a first mold and a second mold contacting the first mold, and a first mold contacting each other. A mold body in which a mold cavity corresponding to a connection module is formed on the inner circumferential surface of the mold and the second mold, respectively; A material supply unit for supplying a molding material to the mold body; And a cooling water supply unit for supplying cooling water to the mold body.

Here, a steam supply unit for increasing the flow of the supplied material by increasing the temperature of the mold body; And a compressed air generator for providing compressed air to facilitate separation of the first mold and the second mold after the molding of the connection module is completed.

Here, at least one of the first mold and the second mold may have a cooling channel formed so that the cooling water supplied from the cooling water supply unit flows.

The injection mold system for molding a connection module box according to the present invention includes a first mold and a second mold in contact with the first mold, and each molding cavity corresponding to the connection module is provided on the inner circumferential surface of the first mold and the second mold in contact with each other. It includes a mold body to be formed, a material supply unit that supplies molding materials to the mold body, and a cooling water supply unit that supplies coolant to the mold body, thereby facilitating the flow of the molding material when molding the connection module box, and reducing the cooling water. It can improve product quality and increase productivity through uniform rapid cooling.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

1 is a system diagram of an injection mold system for molding a connection module box according to an embodiment of the present invention.
2 is an exploded view of a mold body according to an embodiment of the present invention.
3 is a conceptual diagram of a flow path formed in a mold body according to an embodiment of the present invention.
4 is a block diagram of an injection mold system for molding a junction module box according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that the same components in the accompanying drawings are indicated by the same reference numerals as possible. In addition, detailed descriptions of known functions and configurations that may obscure the subject matter of the present invention will be omitted. For the same reason, some elements in the accompanying drawings are exaggerated, omitted, or schematically illustrated.

In addition, throughout the specification, when a certain part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated. In addition, throughout the specification, the term "~on" means that it is located above or below the target part, and does not necessarily mean that it is located above the gravitational direction.

1 is a system diagram of an injection mold system for molding a connection module box according to an embodiment of the present invention, FIG. 2 is an exploded view of a mold body according to an embodiment of the present invention, and FIG. A conceptual diagram of a flow path formed in a mold body, and FIG. 4 is a block diagram of an injection mold system for molding a connection module box according to an embodiment of the present invention.

1 to 4, the injection mold system 10 for molding a connection module box according to an embodiment of the present invention is capable of molding a connection module box for molding a connection module for a vehicle, and the mold body 110 ), a material supply unit 120, a cooling water supply unit 130, a compressed air supply unit 140, a steam supply unit 150, a thermal imaging camera 160, and a control unit 170.

The mold body 110 includes a first mold 111 and a second mold 112. The first mold 111 and the second mold 112 are disposed so as to contact each other, and molding cavities 1111 and 1121 corresponding to the connection module are formed on the inner circumferential surface, respectively.

In addition, cooling passages 1112 and 1122 are formed in the first mold 111 and the second mold 112, respectively. Each of the cooling passages 1112 and 1122 is formed in the same shape in the inward direction from one side of the forming cavities 1111 and 1121 and is spaced a predetermined distance apart. In this way, the cooling passages 1112 and 1122 are formed to correspond to the shape of the outer circumferential surface of the forming cavities 1111 and 1121, so that a uniform amount of heat from the cooling water moving along the cooling passages 1112 and 1122 as shown in FIG. 3(a) Since it is provided with, it is possible to improve the quality of the molded product by allowing uniform cooling as a whole. On the other hand, conventionally, as shown in Fig. 3 (b), since they are separated by the same distance along one direction regardless of the shape of the outer circumferential surface of the forming cavity, a difference occurs in the distance between the cooling channel and the outer circumferential surface of the cavity, resulting in a difference in the amount of heat transferred. It is not possible to provide uniform cooling of the molded article, and a temperature gradient is formed in the molded article due to such temperature deviation, resulting in a problem of deteriorating the quality of the molded article.

In this case, heat insulating layers 1113 and 1123 may be provided on the outer side of both side surfaces of the cooling passages 1112 and 1122. The heat insulation layers 1113 and 1123 allow rapid cooling of the molded product by intensively transferring heat from the cooling water moving along the cooling flow paths 1112 and 1122 to the outside, and not to the outside, but intensively transferring the heat to the molding cavities 1111 and 1121. I can.

In addition, the first mold 111 and the second mold 112 may be provided with mold temperature sensors 1114 and 1124 capable of sensing the temperature of the molding cavities 1111 and 1121. The mold temperature sensors 1114 and 1124 are disposed between the inner circumferential surfaces of the molding cavities 1111 and 1121 and the cooling channels 1112 and 1122 to indirectly sense the temperature of the material accommodated in the molding cavities 1111 and 1121. At this time, the mold temperature sensors 1114 and 1124 are horizontally disposed in the forming cavities 1111 and 1121 in opposite directions, so that the temperature of the molded object in the forming cavities 1111 and 1121 can be sensed as a whole. In addition, since the mold temperature sensors 1114 and 1124 are disposed completely contained therein, they do not come into direct contact with each other, so that damage can be prevented.

Through this, the mold temperature sensors 1114 and 1124 control the operating conditions of the cooling water through the control unit 170 based on the material temperature in the indirectly sensed molding cavities 1111 and 1121, thereby further improving the quality of the molded product. Can be improved.

That is, in the present invention, the cooling flow paths 1112 and 1122 are connected to the cooling water supply unit 130 to increase the production speed of the molded product by increasing the cooling rate of the material contained in the molding cavities 1111 and 1121 through the supplied cooling water. At the same time, the quality of the molded product can be improved by making the structure of the molded product dense.

The material supply unit 120 supplies a molding material to the mold body 110. In the present invention, the material is formed by mixing a plastic matrix resin with a conductive filler so as to shield electromagnetic waves. In addition, the filler may be coated with a conductive material as a metal plated glass fiber for electromagnetic wave shielding, so that the reflective function may be performed during the electromagnetic wave shielding function.

Accordingly, it is possible to effectively block a large amount of harmful electromagnetic waves that may occur in various electronic control parts and devices introduced to increase the convenience of the vehicle, thereby preventing the occurrence of safety accidents such as malfunction of the vehicle and sudden start.

On the other hand, when the material is supplied into the molding cavity, the inflow rate of the material being introduced is maintained at 90 to 110 mm/s, and more preferably, it is preferable to be maintained at 100 mm/s. If the flow rate into the molding cavity is less than 90mm/s, the flow rate becomes slow, and the temperature change of the material may occur significantly during the movement of the material. If it exceeds 110mm/s, the material is rapidly supplied into the cavity, and there may be a problem that it is not normally filled.

The cooling water supply unit 130 serves to supply cooling water to the mold body 110. In addition, the cooling water supply unit 130 may include a thermoelectric element capable of adjusting the temperature of the cooling water. The cooling water supply unit 130 maintains the temperature of the cooling water below a preset temperature through a thermoelectric element based on the temperature of the material sensed through the mold temperature sensors 1114 and 1124, thereby reducing cooling efficiency due to an increase in the temperature of the cooling water. Can be prevented. At this time, the cooling water supply unit 130 is provided with a temperature sensor capable of sensing the temperature of the cooling water.

The compressed air supply unit 140 serves to smoothly separate the molded product by injecting compressed air into the molding cavities 1111 and 1121. For this, in the first mold 111 and the second mold 112, an air flow path (not shown) may be formed between the cooling flow paths 1112 and 1122 and the molding cavities 1111 and 1121.

The air flow path is formed so that air holes communicate with one side of the molding cavities 1111 and 1121 in a direction perpendicular to each other to supply air into the molding cavities 1111 and 1121 to provide smooth separation of the molded products. In this way, the air flow path is physically completely separated from the cooling flow paths 1112 and 1122, so that the outflow of the cooling water can be fundamentally blocked. Accordingly, damage to the product that may occur during product separation can be prevented through smooth separation of the connection module box molded inside the molding cavities 1111 and 1121.

When the material is supplied from the material supply unit 120, the steam supply unit 150, when the temperature of the material is less than or equal to a preset temperature, through an air flow path formed in each of the first mold 111 and the second mold 112 By providing steam so that the temperature of the material accommodated in the molding cavities 1111 and 1121 is equal to or higher than a preset temperature, the material can be uniformly filled in the molding cavities 1111 and 1121 through the smooth flow of the material.

In this case, the steam supply unit 150 is provided with steam through an air flow path in the same manner as the compressed air supply unit 140.

To this end, the flow paths extending to the steam supply unit 150 and the compressed air supply unit 140 are connected to the T-shaped branch pipes 151, respectively, and the first valve 141 and the second valve ( 152) is provided. Then, the remaining T-shaped branch pipes are connected to the air flow path. Accordingly, in the operating state of the compressed air supply unit 140, the first valve 141 connected to the compressed air supply unit 140 is opened, and the second valve 152 connected to the steam supply unit 150 is closed. Conversely, in the operating state of the steam supply unit 150, the second valve 152 connected to the steam supply unit 150 is opened, and the first valve 141 connected to the compressed air supply unit 140 is closed.

That is, according to the operating conditions of the steam supply unit 150 or the compressed air supply unit 140, the first valve 141 and the second valve 152, respectively connected, are selectively opened or closed to provide compressed air or steam. I can. Accordingly, the internal structure of the first mold 111 and the second mold 112 can be made simpler.

After the molding is completed, the thermal imaging camera 160 photographs the molded connection module box disposed between the first mold 111 and the second mold 112 and determines whether or not the molded product is normally molded. That is, before the molded product is discharged, the thermal imaging camera 160 photographs one side of the molded product to generate an inspection thermal image, and determines whether the molded product is normal based on this.

At this time, in order to determine whether the molded product is normal, the reference thermal image data is previously stored in the control unit 170. In this case, the reference thermal image data may be formed by learning based on a plurality of thermal images.

Accordingly, when the inspection thermal image image is acquired through the thermal imaging camera 160, the control unit 170 compares the reference thermal image image and the inspection thermal image image to determine the molding state of the product.

If, when comparing the inspection thermal image image and the reference thermal image data, the temperature displacement distribution of the heat is significantly different, it is judged as a defective product.

In addition, by photographing the product through a general camera to create a general image, and mapping the defective position acquired from the inspection thermal image to the general image position and displaying it, use of where the defective position occurs intensively in the product in the future. It can be used as monitoring data for product improvement.

The injection mold system for molding a connection module box according to the present invention facilitates the flow of a molding material when molding a connection module box, and improves product quality and productivity through uniform rapid cooling through cooling water.

In addition, although the injection mold system in the present invention has been described only with respect to the connection module box, it is obvious that it is not limited thereto and can be applied to various injection molded products.

On the other hand, the embodiments of the present invention disclosed in the present specification and the drawings are only provided specific examples to facilitate the description of the present invention and to aid understanding of the present invention, and are not intended to limit the scope of the present invention. In addition to the embodiments disclosed herein, it is apparent to those of ordinary skill in the art that other modifications based on the technical idea of the present invention may be implemented.

110: mold body 111: first mold
1111, 1121: forming cavity 1112, 1122: cooling flow path
1113, 1123: insulation layer 1114, 1124: mold temperature sensor
120: material supply unit 130: cooling water supply unit
140: compressed air supply unit 141: first valve
150: steam supply unit 151: T-type branch pipe
152: second valve 160: thermal imaging camera
170: control unit

Claims (3)

In the injection mold system for molding a connection module box for molding a vehicle connection module,
A mold body having a first mold and a second mold in contact with the first mold, and in which molding cavities corresponding to the connection modules are respectively formed on inner circumferential surfaces of the first mold and the second mold in contact with each other;
A material supply unit for supplying a molding material to the mold body;
A cooling water supply unit supplying cooling water to the mold body;
A steam supply unit for increasing the flow of the supplied material by increasing the temperature of the mold body; And
Compressed air supply unit for providing compressed air to facilitate separation of the first mold and the second mold after the molding of the connection module is completed; further comprises,
At least one of the first mold and the second mold,
A cooling flow path is formed so that the cooling water supplied from the cooling water supply unit flows,
When supplying into the molding cavity, the flow rate of the incoming material is maintained at 90 ~ 110mm/s,
The cooling water supply unit,
A thermoelectric element capable of controlling the temperature of the cooling water is provided, and the temperature of the cooling water is maintained below a preset temperature using the thermoelectric element based on the temperature of the material sensed through the mold temperature sensor, thereby cooling due to an increase in the temperature of the cooling water. Prevents loss of efficiency,
The compressed air supply unit,
An air flow path is formed between the molding cavities, and the air flow path is formed so that an air hole communicates in a direction perpendicular to one side of the molding cavity to supply air into the molding cavity, and physically with the cooling flow path. It is completely separated to block the outflow of cooling water,
The steam supply unit provides steam through the air flow path in the same way as the compressed air supply unit, and for this purpose, the steam supply unit and the flow path extending to the compressed air supply unit are respectively connected to a T-shaped branch pipe, and each branch A first valve and a second valve are provided at positions, and the T-shaped remaining branch pipe is connected to an air flow path. delete delete

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