KR101342690B1 - Extruding die for manufacturing weather strip - Google Patents

Abstract

An extrusion die apparatus for manufacturing a weather strip is disclosed. The extrusion die apparatus for manufacturing the weather strip with a hollow part comprises: a die assembly which contains a plurality of extrusion dies consecutively laminated, and comprises at least one guide part for guiding rubber materials and an extrusion part for extruding the rubber materials; a core member hollow which is arranged at the extrusion part in order to form a hollow part and contains an air inlet hole in which air is injected; an air passage unit which is arranged at the inner space of the die assembly away from the guide part and is connected to the air inlet hole; and an air inlet member which is mounted on the die assembly and is connected with the air passage unit.

Description

Extrusion mold apparatus for manufacturing weather strip {EXTRUDING DIE FOR MANUFACTURING WEATHER STRIP}

An exemplary embodiment of the present invention relates to a vehicle weather strip manufacturing system, and more particularly, to an extrusion mold apparatus for extruding a rubber material to produce a weather strip.

In general, a weather strip is inserted between the vehicle body and the door, the vehicle body, and the trunk lid to prevent rainwater or dust from entering the vehicle or the trunk room.

The weather strip is made of a flexible rubber material, blocks outside air and noise, absorbs shock when opening and closing doors and trunk lids, and prevents vibrations while driving. Alternatively, it is possible to prevent the occurrence of aspiration sound due to a gap with the trunk lid.

The manufacturing method of the weather strip according to the prior art manufactures a weather strip having a fixing part composed of a lip and a hollow part as a sealing tube, for example, by installing a mold die at the end of the extruder and extruding a rubber material through the mold die. .

For example, the mold die is provided as an assembly in which a plurality of die members are stacked to guide heat-added rubber material and to extrude into a predetermined shape.

Such a die die has a structure capable of preventing deformation of the weather strip by injecting air into the hollow portion of the extrudate (weather strip) extruded from the assembly and discharging the gas inside the hollow portion to the outside.

However, according to the mold die of the prior art, the air injection means, such as a tube form for injecting air into the hollow portion during extrusion of the rubber material is installed on the path through which the rubber material is guided or the site where the rubber material is injected is short. There are many factors that impede the overall flow of the rubber material, such as in binary form.

Therefore, in the prior art, the rubber material may cause a stagnation of the rubber material during extrusion of the weather strip due to the above-mentioned factors that impede the flow of the rubber material. As a result, the extrusion performance of the rubber material is degraded, and the occurrence of product defects is reduced. There is a problem that increases.

Exemplary embodiments of the present invention can further improve the extrusion performance of the rubber material by fundamentally eliminating the factors that hinder the flow of the rubber material and preventing the stagnation of the rubber material, and a weather that enables to reduce the occurrence of product defects. An extrusion mold apparatus for strip production is provided.

Extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention is for producing a weather strip including a hollow portion, i) a plurality of extrusion dies are continuously stacked, at least one guide for guiding the rubber material A die assembly having a die and an extruded portion for extruding the rubber material, ii) a core member provided in the extruded portion to form the hollow portion, and having an air injection hole through which air can be injected, i) the guide Separately from the part, and may be included in the die assembly, the air passage unit is interconnected with the air injection hole, and iii) may be included in the die assembly, the air injection member is connected to the air passage unit. .

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the air passage unit is formed on the laminated surface of the extrusion die provided with the core member and the air injection hole and the air injection member and Each air channel may be connected.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the air passage unit is formed in the air channel in a plane with the laminated surface, the air injection member and the air injection hole is It may include a cover member for forming an interconnected air passage.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the guide portion may be connected to the air injection hole of the core member.

Further, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the air channel may extend from the laminated surface to the guide portion.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the cover member may form a plane in the guide portion to close the air channel.

In addition, the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention is for manufacturing a weather strip including a fixing part made of hard rubber and a hollow part made of soft rubber and integrally connected with the fixing part. Iii) a first extrusion die having a first guide portion for guiding hard rubber material to which heat is added, and ii) first and second extrusion holes connected to the first guide portion for extruding the hard rubber material. A second guide portion, a third guide portion for guiding the soft rubber material to which heat is added, and a core member having an air injection hole and installed in the third guide portion, the first guide portion being coupled to the first extrusion die. A second extrusion die, iii) a third extrusion die coupled with the second extrusion die, and having a third extrusion hole interconnected with the first and second extrusion holes and having the core member positioned therein, iii) the first extrusion An air passage unit interconnected with an air injection hole of the core member, and iii) coupled to the second extrusion die through the third extrusion die; It may include an air injection member interconnected with the air passage unit.

In addition, the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention is coupled to the third extrusion die, and further comprises a fourth extrusion die for substantially guiding the extrudate extruded through the third extrusion hole. It may include.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the fourth extrusion die is a guide protrusion for guiding the extrudate, and the interconnection to both sides of the guide protrusion between the It may include a first and second through portion formed.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the first through portion may be made of a space in which the extrudate is extruded.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the second through portion may be rotatably installed a bobbin-shaped roller member for imparting a roughness to the surface of the extrudate.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the third extrusion die may be formed with a support groove for supporting the rotation of the roller member.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the first guide portion may have a round inlet end, and may form a circular inlet end through tapering.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the third guide portion is formed in a groove shape in the plane of the second extrusion die, and is separate from the first and second extrusion holes. It may be connected to the third extrusion hole.

Further, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the third guide portion is the third extrusion die is coupled to the plane of the second extrusion die and the edge face of the second extrusion die Inlet end can be formed.

Further, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the air passage unit separates the air injection hole and the air injection member of the core member separately from the first and second guide parts. Can be interconnected.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the air passage unit is formed on the laminated surface of the second extrusion die, the air channel connecting the air injection hole and the air injection member And a cover member which is formed in the air channel in a plane with the laminated surface of the second extrusion die and forms an air passage in which the air injection member and the air injection hole are interconnected.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the air injection hole of the core member may be connected to the second guide portion.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the air channel may extend from the laminated surface to the second guide portion.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the cover member may form a plane in the second guide portion to close the air channel.

In addition, in the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, the air channel may be formed in the shape of a "-" on the laminated surface of the second extrusion die.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the air injection member may be made in the form of a pipe.

In addition, in the extrusion mold apparatus for manufacturing the weather strip according to an exemplary embodiment of the present invention, the air injection member may be connected to the air passage unit through the third extrusion die and the second extrusion die.

According to an exemplary embodiment of the present invention, an air passage unit is formed inside the die assembly separately from the first and second guide portions of the first and second extrusion dies, and the inlet end is formed in a round shape and tapered. Since the first guide portion 121 is formed through, it is possible to remove a factor that obstructs the flow of the rubber material in the process of the rubber material is extruded through the extrusion of the die assembly, it is possible to prevent the stagnation of the rubber material.

Therefore, in the embodiment of the present invention, it is possible to prevent the flow of the rubber material and stagnation, thereby further improving the extrusion performance of the rubber material, it is possible to reduce the occurrence of defects of the product due to the hard change of the material during the extrusion.

These drawings are for the purpose of describing an exemplary embodiment of the present invention, and therefore the technical idea of the present invention should not be construed as being limited to the accompanying drawings.
1 is a cross-sectional view schematically showing an example of a vehicle weather strip that can be manufactured by an extrusion mold apparatus according to an exemplary embodiment of the present invention.
Figure 2 is a perspective view of the combination showing an extrusion mold apparatus for producing a weather strip according to an exemplary embodiment of the present invention.
3 is a front exploded perspective view showing an extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention.
4 is a bottom exploded perspective view showing an extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention.
5 and 6 are perspective views illustrating a second extrusion die of an extrusion die apparatus for producing a weather strip according to an exemplary embodiment of the present invention.
7 is an exploded perspective view showing an air passage unit part of the extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention.
8 and 9 is a partial cross-sectional view showing a portion of the air passage unit of the extrusion mold apparatus for producing a weather strip according to an exemplary embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

In the following detailed description, the names of the components are denoted by the first, second, third, etc. in order to distinguish the names of the components from each other in the same relation, and are not necessarily limited to the order in the following description.

1 is a cross-sectional view schematically showing an example of a vehicle weather strip that can be manufactured by an extrusion mold apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 1, prior to describing an extrusion mold apparatus according to an exemplary embodiment of the present invention, a weather strip 1 which may be manufactured by its extrusion mold apparatus (commonly referred to in the art as a "detention apparatus") 1 ) Is installed at the edge of the door or trunk of the vehicle, and is for sealing (sealing) the interior (inside the vehicle) and the trunk room.

For example, the weather strip 1 is made of a flexible rubber material, blocks external air or noise, absorbs shock when opening and closing the door, and prevents vibration during driving. It plays a role of preventing the occurrence of aspiration sound by the gap.

Here, the weather strip 1 is installed on both the left and right doors or the door body of the vehicle and seals the door and the body when the door is opened and closed, and prevents foreign substances such as rainwater from entering the gap between the door and the vehicle body. have.

The weather strip 1 has a fixing part 3 forming a plurality of ribs 2 fixed to a door or a door body, and a hollow part in the form of a hollow (tube) connected integrally with the fixing part 3. (5) (commonly known in the art as "seal tubes").

The fixing part 3 is made of a hard rubber material and may be connected to a part of the hollow part 5 through the connecting part 4. One portion of the connecting portion 4 and the hollow portion 5 may be made of a hard rubber material.

In addition, the hollow part 5 forms a hollow in the form of a tube, and the remaining part except for one part may be made of a soft rubber material such as a foam sponge.

In this case, the hollow part 5 may be deformed flat when the door is closed to absorb the impact energy of the door, and to block various noises, foreign substances, etc. introduced into the gap between the door and the body.

Figure 2 is a combined perspective view showing an extrusion mold apparatus for manufacturing a weather strip according to an exemplary embodiment of the present invention, Figure 3 is a front exploded perspective view of Figure 2, Figure 4 is a bottom exploded perspective view of FIG.

Hereinafter, the following various components will be described on the basis of when the extrusion mold apparatus 100 is placed in an up and down direction, and the upper facing surface may be defined as an upper surface, and the lower facing surface is a lower surface or a bottom surface. It can be defined as.

The definition of the direction as described above is a relative meaning, since the direction may vary depending on the position based on the mounting state of the extrusion die apparatus 100, etc., the reference direction is not necessarily limited to the reference direction of the present embodiment. no.

2 to 4, the extrusion mold apparatus 100 for manufacturing a weather strip according to an exemplary embodiment of the present invention extrudes the weather strip 1 as described above by extruding a hard rubber material and a soft rubber material. It is to.

Here, the extrusion mold apparatus 100 is a hard rubber material (hereinafter referred to as "hard rubber material" for convenience) and a soft rubber material (hereinafter referred to as "soft rubber material" for convenience) to which heat discharged through a screw from a hopper is added. To the unique shape of the weather strip 1.

For example, the extrusion die apparatus 100 can extrude a hard rubber material and a soft rubber material to extrude a weather strip 1 of a desired shape while integrating them.

Extrusion mold apparatus 100 for manufacturing the weather strip according to an exemplary embodiment of the present invention has a structure capable of removing the factors that hinder the flow of the rubber material during the extrusion of the rubber material, preventing the stagnation of the rubber material Is made of.

To this end, the extrusion mold apparatus 100 for manufacturing a weather strip according to an exemplary embodiment of the present invention basically includes a die assembly 110, an air passage unit 310, and an air injection member 510. If this is described by configuration, it is as follows.

In the embodiment of the present invention, the die assembly 110 is formed by successively stacking a plurality of extrusion dies (120, 140, 160, 180).

The die assembly 110 forms a hole extruded portion 111 capable of extruding the extrudate as a weather strip 1 having a fixed portion 3 and a hollow portion 5 combined thereon.

Here, the extrusion dies 120, 140, 160, 180 is made of a disk-shaped die, it may be fastened in the stacking direction by a coupling means (not shown in the figure) such as bolts.

Hereinafter, the extrusion dies 120, 140, 160, and 180 may be replaced with the first extrusion die 120, the second extrusion die 140, the third extrusion die 160, and the fourth extrusion die 180 for convenience. Name it

In the embodiment of the present invention, the first extrusion die 120 is located at the bottom of the die assembly 110 with reference to the drawings, made of a disk shape having a certain height, the hard rubber as mentioned above And a first guide 121 for guiding the material to the extrusion 111 of the die assembly 110.

The first guide part 121 is formed in an upward direction from a lower surface of the first extrusion die 120.

The first guide portion 121 forms a guide surface for guiding the hard rubber material from the inlet end of the lower surface of the first extrusion die 120, and has a shape penetrating into the upper surface of the first extrusion die 120.

In this case, the first guide portion 121 has a round inlet end, and forms a circular inlet end through tapering, and the cross section is gradually smaller from the inlet end to the upper surface of the first extrusion die 120. Losing shape can be made.

In this case, a communication part 123 connected to the first guide part 121 is formed on an upper surface of the first extrusion die 120, and the communication part 123 may have a non-circular shape.

Therefore, in the embodiment of the present invention, since the inlet end of the first guide portion 121 is formed in a round shape, and the first guide portion 121 is formed through tapering, the extrusion part 111 of the die assembly 110 is performed. ), It is possible to eliminate the factors that hinder the flow of the rubber material during the extrusion of the rubber material, it is possible to prevent the stagnation of the rubber material.

In the embodiment of the present invention, the second extrusion die 140 is coupled to the upper surface of the first extrusion die 120, made of a disk shape, the second guide portion 141, the third guide portion 143 ) And a core member 145.

Hereinafter, the configuration of the second extrusion die 140 will be described in more detail with reference to FIGS. 5 and 6 along with FIGS. 2 to 4 described above.

5 and 6 are perspective views illustrating a second extrusion die of an extrusion die apparatus for producing a weather strip according to an exemplary embodiment of the present invention.

2 to 6, in the second extrusion die 140 according to the embodiment of the present invention, the second guide part 141 is provided through the first guide part 121 of the first extrusion die 120. It is for guiding the guided hard rubber material to the extruded part 111 as mentioned above.

The second guide portion 141 is connected to the first guide portion 121 of the first extrusion die 120, is formed in the groove shape on the lower surface of the second extrusion die 140, the first extrusion die ( It is connected to the communication portion 123 of the 120.

That is, the second guide part 141 may be formed in a groove shape on the bottom surface of the second extrusion die 140 in a shape corresponding to the communication part 123 of the first extrusion die 120.

Here, the second guide portion 141 has first and second extrusion holes 147 for extruding the hard rubber material into the extrusion portion 111 in a shape corresponding to the fixing portion 3 of the weather strip 1. 149 are formed respectively.

In this case, the first extrusion hole 147 is for extruding the ribs 2 of the fixing part 3 as a hard rubber material, and the second extrusion hole 149 is the fixing part 3 and the hollow part ( It is for extruding a part of the connection part 4 connecting 5) and the hollow part 5 connected with the connection part 4 as a hard rubber material.

In the embodiment of the present invention, the third guide portion 143 is for guiding the soft rubber material for forming the hollow portion 5 of the weather strip 1 to the extrusion portion 111 of the die assembly 110. will be.

The third guide portion 143 is formed in a groove shape on the upper surface of the second extrusion die 140 from a predetermined section of the edge surface of the second extrusion die 140, the first of the second extrusion die 140 And second extrusion holes 147 and 149, separately from the extrusion part 111.

Here, the third guide portion 143 is a guide path of the soft rubber material for extruding the remaining portion of the hollow portion 5 into the soft rubber material, and the second extrusion hole 149 of the second extrusion die 140. It may be connected to a portion of the core member 145, which will be described later, without being connected to).

In addition, the third guide part 143 is coupled to the top surface of the second extrusion die 140 by the third extrusion die 160, which will be described later. The inlet end 144 of the material (see FIG. 2) may be formed.

In the embodiment of the present invention, the core member 145 forms a hollow portion 5 of the weather strip 1, and when the extrusion of the weather strip 1 injects air into the hollow portion 5 to the hollow It is for discharging the gas inside the part 5 to the outside.

The core member 145 is formed to protrude from the third guide portion 143 in a shape corresponding to the hollow portion 5, and forms an air injection hole 151 connected to the second guide portion 141. .

In the embodiment of the present invention, the third extrusion die 160 is coupled to the upper surface of the second extrusion die 140, and has a disk shape, the above-mentioned on the edge surface of the second extrusion die 140 An inlet end 144 of the third guide part 143 may be formed.

A third extrusion hole 161 is formed through the third extrusion die 160, and the third extrusion hole 161 may have first and second extrusion holes 147 and 149 of the second extrusion die 140. Interconnected with the core member 145 may be fitted to constitute the extruded portion 111 mentioned above.

The third extrusion hole 161 may have the same overall shape as that of the weather strip 1, and may be connected to the third guide part 143 of the second extrusion die 140.

In the embodiment of the present invention, the fourth extrusion die 180 is coupled to the upper surface of the third extrusion die 160, is made of a disk shape, the third extrusion hole 161 of the extrusion unit 111 It serves to guide the extrudate (which may also be defined as a weather strip) extruded through.

To this end, the fourth extrusion die 180 may include a guide protrusion 181 for guiding the extrudate, and first and second penetration parts 183 formed to be interconnected to both sides thereof with the guide protrusion 181 therebetween. , 185).

The guide protrusion 181 serves to guide the lip 2 of the weather strip 1, which is an extrudate extruded through the extrusion part 111 from the first and second through parts 183 and 185.

A third extrusion hole 161 of the third extrusion die 160 is positioned in the first through part 183, and a space through which the extrudate can be extruded is formed through the extrusion part 111.

The second through part 185 is rotatably provided with a roller member 187 for imparting roughness to the surface of the extrudate.

Here, the roller member 187 is formed in a bobbin shape that gradually decreases in diameter from both sides toward the center, and may be rotatably installed in the second through part 185 through a separate bracket 191.

The bracket 191 may support both sides of the roller member 187 and may be fixed to the wall surface of the second through part 185.

On the other hand, the upper surface of the third extrusion die 160, the support groove 171 for supporting the rotation of the roller member 187 corresponding to the third extrusion hole 161 is formed.

On the other hand, in the embodiment of the present invention, the air passage unit 310 injects air into the hollow part 5 during extrusion of the weather strip 1 through the extrusion part 111 of the die assembly 110. It is to discharge the gas inside the hollow portion 5 to the outside.

In addition, the air passage unit 310 may remove a factor that hinders the flow of the rubber material in the process of extruding the rubber material through the extrusion unit 111 of the die assembly 110, and reduces the stagnation of the rubber material. It is made of a structure that can be prevented.

Figure 7 is an exploded perspective view showing the air passage unit portion of the extrusion mold apparatus for producing a weather strip according to an exemplary embodiment of the present invention, Figure 8 and Figure 9 is an extrusion mold for manufacturing a weather strip according to an exemplary embodiment of the present invention. Partial cross-sectional configuration diagram showing an air passage unit portion of the apparatus.

7 to 9, the air passage unit 310 according to an exemplary embodiment of the present invention has a laminated surface of a second extrusion die 140 in close contact with the first extrusion die 120. That is, it may be configured on the lower surface of the second extrusion die 140.

That is, the air passage unit 310 may be configured inside the die assembly 110 and may be interconnected with the air injection hole 151 of the core member 145 described above.

Here, the air passage unit 310 is an air injection hole 151 of the core member 145 separately from the first and second guide portions 121 and 141 of the first and second extrusion dies 120 and 140. And the air injection member 510 to be described later will be further interconnected.

The air passage unit 310 includes an air channel 311 and the cover member 411, the air channel 311 is formed on the lower surface of the second extrusion die 140, the air of the core member 145 It may be connected to the injection hole 151.

The air channel 311 has a groove shape on a lower surface of the second extrusion die 140, and an air injection hole of the core member 145 connected to the second guide portion 141 of the second extrusion die 140. 151).

In addition, the air channel 311 is formed in a substantially air-base (a) shape on the lower surface of the second extrusion die 140, from the lower surface of the second extrusion die 140 to the guide surface of the second guide portion 141. Can be extended.

In an embodiment of the present invention, the cover member 411 is installed in the air channel 311 and the air interconnecting the air injection hole 151 of the core member 145 and the air injection member 510 to be described later further It is for forming the passage 413.

The cover member 411 is installed in the air channel 311 so as to form a plane on the lower surface of the second extrusion die 140 and the guide surface of the second guide portion 141, the shape corresponding to the air channel 311 Can be done.

That is, the cover member 411 may extend from the lower surface of the second extrusion die 140 to the guide surface of the second guide portion 141 and close the air channel 311.

Here, the cover member 411 is installed in the air channel 311 in a plane on the lower surface of the second extrusion die 140 and the guide surface of the second guide portion 141, which is the cover member 411 air channel 311 and the cover member 411 can be welded to the lower surface of the 2nd extrusion die 140 and the guide surface of the 2nd guide part 141, and the welding part can be planarly processed by grinding.

As an alternative, the embodiment of the present invention is not limited to planarizing the lid member 411 with respect to the lower surface of the second extrusion die 140 and the guide surface of the second guide portion 141 in a welding and grinding manner. It is also possible to fit the 411 in the air channel 311 to be fitted to the cover member 411 flattened.

Therefore, in the embodiment of the present invention through the air channel 311 and the cover member 411 as described above, the air injection hole 151 of the core member 145 and the air injection member 510 to be described later will be interconnected. The air passage 413 can be formed.

In addition, in the embodiment of the present invention, the air passage unit 310 may be formed inside the die assembly 110 separately from the first and second guide parts 121 and 141 of the first and second extrusion dies 120 and 140. Can be configured.

In the embodiment of the present invention, the air injection member 510 is for injecting air in the atmosphere to the air injection hole 151 of the core member 145.

The air injection member 510 is formed in the form of a pipe (pipe), penetrates the fourth extrusion die 180 and the third extrusion die 160 and is coupled to the second extrusion die 140, as mentioned above. It may be connected to the air passage unit 310 that is.

That is, the air injection member 510 is coupled to the first and second coupling holes 511 and 513 formed in the fourth extrusion die 180 and the third extrusion die 160, and the second extrusion die 140. It is coupled to the third coupling hole 515 formed in the can be connected to the air passage 413 of the air passage unit 310.

 Hereinafter, the assembly structure of the extrusion mold apparatus 100 for manufacturing a weather strip according to an exemplary embodiment of the present invention configured as described above and its operation will be described in detail with reference to the drawings disclosed above.

First, in the embodiment of the present invention, the first to fourth extrusion dies 120, 140, 160 and 180 are sequentially stacked, and the extrusion means 120, 140, 160 and 180 are fastened by bolts (drawings). Fasteners (not shown) to form the die assembly 110.

Here, the first guide portion 121 of the first extrusion die 120 is connected to the second guide portion 141 of the second extrusion die 140, and the first and second guide portions 121 and 141. May guide the hard rubber material fed through the screw of the hopper.

In addition, a third guide part 143 is formed between the second and third extrusion dies 140 and 160 by coupling the third extrusion die 160 to the upper surface of the second extrusion die 140. It is possible to form the inlet end 144 of the soft rubber material on the edge face of the extrusion die 140.

In this case, the first and second extrusion holes 147 and 149 and the third guide part 143 of the second extrusion die 140 are connected to the third extrusion hole 161 of the third extrusion die 160. The core member 145 of the second extrusion die 140 is disposed in the third extrusion hole 161 and forms the extrusion part 111 in the die assembly 110.

In addition, in the embodiment of the present invention, the air injection member 510 is coupled to the first and second coupling holes 511 and 513 formed in the fourth extrusion die 180 and the third extrusion die 160, and the second It is coupled to the third coupling hole 515 formed in the extrusion die 140 and is connected to the air passage 413 of the air passage unit 310.

Meanwhile, in the embodiment of the present invention, the air injection hole 151 and the air injection member 510 of the core member 145 are provided through the air passage unit 310 including the air channel 311 and the cover member 411. An interconnecting air passage 413 is configured inside the die assembly 110 separately from the first and second guides 121, 141 of the first and second extrusion dies 120, 140.

In addition, the fourth extrusion die 180 has a roller member 187 for providing a roughness to the surface of the extrudate to be extruded through the extrusion unit 111 is supported on the upper surface of the third extrusion die 160 and installed rotatably It is.

Therefore, according to the extrusion mold apparatus 100 for manufacturing a weather strip according to the exemplary embodiment of the present invention assembled as described above, the hard rubber material is transferred to the first and second extrusion dies 120 and 140 through a screw in a hopper or the like. Discharges to the first and second guide parts 121 and 141.

In this process, in the embodiment of the present invention, since the inlet end is formed in a round shape and the first guide portion 121 is formed through the tapering process, the hard rubber material guides the second through the first guide portion 121. Factors that hinder the flow of the rubber material in the process of being guided to the portion 141 can be eliminated, and stagnation of the rubber material can be prevented.

The hard rubber material as described above is guided by the first and second guide parts 121 and 141 and extruded through the first and second extrusion holes 147 and 149 of the second guide part 141, and the third Extruded through the third extrusion hole 161 of the extrusion die 160.

Here, the hard rubber material is in the weather strip (1), the lip (2) of the fixing part (3), the connecting part (4) connecting the fixing part (3) and the hollow part (5), and the connecting part (4) and Corresponding to a portion of the hollow portion 5 to be connected may be extruded through the third extrusion hole 161 of the third extrusion die 160.

During the above process, in the embodiment of the present invention, the soft rubber material is discharged to the third guide portion 143 of the second extrusion die 140 through a screw in a hopper or the like.

Then, the soft rubber material is guided along the inlet end 144 of the third guide portion 143 and corresponds to the remaining portion of the hollow portion 5 separately from the first and second extrusion holes 147 and 149. It may be extruded through the third extrusion hole 161.

Therefore, in the embodiment of the present invention, the hard rubber material and the soft rubber material are integrated through the third extrusion hole 161, which is the extrusion part 111 of the die assembly 110, and the fixing part 3 of the hard rubber material And the hollow strip 5 of the soft rubber material can be extruded integrally.

In this case, the extrudate weather strip 1 is extruded through the third extrusion hole 161 at the first through portion 183 of the fourth extrusion die 180, and the lip portion thereof is guided by the guide protrusion 181. It can be extruded while being guided.

In the process of extruding the weather strip 1 through the third extrusion hole 161, the roller member 187 of the fourth extrusion die 180 is rotated in contact with the lip portion, the surface of the lip portion Will give roughness.

Meanwhile, as described above, in the process of extruding the weather strip 1, the air is injected into the hollow part 5 through the air injection member 510 and the air passage unit 310. By discharging the gas inside the hollow part 5 to the outside, the deformation of the hollow part 5 can be prevented.

That is, in the exemplary embodiment of the present invention, since the air injection hole 151 and the air injection member 510 of the core member 145 are connected through the air passage unit 310, the air in the air may be connected to the air injection member 510. Through the air passage unit 310, it may be injected into the hollow portion 5 through the air passage unit 310 and the air injection hole 151.

According to the extrusion mold apparatus 100 for manufacturing a weather strip according to an exemplary embodiment of the present invention as described above, the first and second guides 121 and 141 of the first and second extrusion dies 120 and 140 are described. Separately from), the air passage unit 310 may be configured inside the die assembly 110.

In the embodiment of the present invention, the inlet end may have a round shape, and the first guide part 121 may be configured through tapering.

Therefore, in the embodiment of the present invention, it is possible to eliminate the factors that hinder the flow of the rubber material in the process of the rubber material is extruded through the extrusion unit 111 of the die assembly 110, it is possible to prevent the stagnation of the rubber material. have.

Thus, in the embodiment of the present invention, it is possible to prevent the flow of the rubber material and stagnation, thereby further improving the extrusion performance of the rubber material, it is possible to reduce the occurrence of defects of the product due to the hard change of the material during the extrusion.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

1 ... weather strip 2 ... lip
3 ... fixtures 4 ... connections
5 ... hollow 110 ... die assembly
111 Extruder 120 First Extrusion Die
121 ... First guide 123 ... Communication section
140 ... 2nd extrusion die 141 ... 2nd guide
143 ... third guide 145 ... core member
147 ... 1st extrusion hole 149 ... 2nd extrusion hole
151 ... Air injection hole 160 ... 3rd extrusion die
161 ... 3rd extrusion hole 171 ... Support groove
180 ... 4th extrusion die 181 ... Guide protrusion
183 ... First penetration 185 ... Second penetration
187 ... Roller 191 ... Bracket
310 ... Air channel unit 311 ... Air channel
411 ... cover member 413 ... air passage
510 ... Air injection member 511 ... First engagement hole
513 ... second engagement hole 515 ... third engagement hole

Claims (17)

An extrusion die apparatus for manufacturing a weather strip including a hollow portion,
A die assembly having a plurality of extrusion dies stacked in series, the die assembly having at least one guide portion for guiding the rubber material and an extrusion portion for extruding the rubber material;
A core member provided in the extrusion part to form the hollow part and having an air injection hole through which air can be injected;
An air passage unit configured inside the die assembly separately from the guide unit and interconnected with the air injection hole; And
A air injection member mounted to the die assembly and connected to the air passage unit;
The air passage unit is formed on the laminated surface of the extrusion die provided with the core member and the air channel connected to the air injection hole and the air injection member, respectively, and is formed in the air channel in a plane with the laminated surface Extrusion mold apparatus for manufacturing a weather strip comprising a cover member for forming an air passage in which the air injection member and the air injection hole are interconnected. delete The method according to claim 1,
An air injection hole of the core member is connected to the guide portion, and the air channel extends to the guide portion from the laminated surface. The method of claim 3,
The cover member is a extrusion strip device for producing a weather strip to form a plane in the guide portion to close the air channel. An extrusion die apparatus for manufacturing a weather strip including a fixing part made of hard rubber and a hollow part made of soft rubber and integrally connected with the fixing part,
A first extrusion die having a first guide portion for guiding heat-added hard rubber material;
A second guide part connected to the first guide part and having first and second extrusion holes for extruding the hard rubber material, a third guide part for guiding a soft rubber material to which heat is applied, and an air injection hole A second extrusion die having a core member installed on the third guide portion and coupled to the first extrusion die;
A third extrusion die coupled to the second extrusion die and having a third extrusion hole interconnected with the first and second extrusion holes and having the core member positioned thereon;
An air passage unit configured on a laminated surface of the second extrusion die in close contact with the first extrusion die and interconnected with an air injection hole of the core member; And
An air injection member coupled to the second extrusion die through the third extrusion die and interconnected with the air passage unit
Extrusion mold apparatus for manufacturing a weather strip comprising a. 6. The method of claim 5,
A fourth extrusion die coupled to the third extrusion die and substantially guiding an extrudate extruded through the third extrusion hole
Extrusion mold apparatus for manufacturing a weather strip further comprising a. The method of claim 6,
The fourth extrusion die,
A guide protrusion for guiding the extrudate,
Extrusion mold apparatus for manufacturing a weather strip including first and second through-holes formed to be interconnected to both sides of the guide protrusion therebetween. The method of claim 7, wherein
The first through part is made of a space in which the extrudate is extruded,
An extrusion mold apparatus for manufacturing a weather strip, wherein the second through part is rotatably provided with a roller member having a bobbin shape that gives roughness to the surface of the extrudate. The method of claim 8,
The extrusion die apparatus for manufacturing a weather strip having a supporting groove for supporting the rotation of the roller member in the third extrusion die. 6. The method of claim 5,
The first guide part is formed in a round shape of the inlet end, the extrusion mold apparatus for manufacturing a weather strip to form a circular inlet end through a taper process. 6. The method of claim 5,
The third guide portion,
It is made in the shape of a groove in the plane of the second extrusion die, and is connected to the third extrusion hole separately from the first and second extrusion holes,
And a third extrusion die coupled to a plane of the second extrusion die and forming an inlet end on an edge face of the second extrusion die. 6. The method of claim 5,
The air passage unit,
Extrusion mold apparatus for manufacturing a weather strip to interconnect the air injection hole and the air injection member of the core member separately from the first and second guide portion. 6. The method of claim 5,
The air passage unit,
An air channel formed on the laminated surface of the second extrusion die and connecting the air injection hole and the air injection member;
A cover member which is formed in the air channel in a plane with the laminated surface of the second extrusion die and forms an air passage in which the air injection member and the air injection hole are interconnected.
Extrusion mold apparatus for manufacturing a weather strip comprising a. The method of claim 13,
The air guide hole of the core member is connected to the second guide portion,
And the air channel extends from the laminated surface to the second guide part. 15. The method of claim 14,
The cover member is a extrusion strip device for manufacturing a weather strip to form a plane in the second guide portion to close the air channel. The method of claim 13,
The air channel is extrusion mold apparatus for producing a weather strip made of a "b" shape on the laminated surface of the second extrusion die. 6. The method of claim 5,
The air injection member is made in the form of a pipe, the extrusion mold apparatus for manufacturing a weather strip through the third extrusion die and the second extrusion die connected to the air passage unit.

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