KR102407713B1 - Strut bearing manufacturing equipment And Strut bearing - Google Patents

Abstract

A manufacturing apparatus for manufacturing a strut bearing through a multi-injection process according to an embodiment of the present invention is a first injection product formed by an insert having a plurality of through-holes inserted therein, a hollow body and a flange extending from one side of the body a first mold part for molding; a second mold part for molding a second injection product in which a sealing part is further formed along one inner and outer peripheral surface of the flange part; and a third mold part for molding a third injection product in which a damper part is further formed on the other side of the flange part and on the outside of a part of the body, wherein the third mold part is inserted and fixed with the second injection part and a tertiary upper mold coupled to the tertiary lower mold to form a tertiary molding space, and the tertiary upper mold has one side surface of the flange portion and the sealing It is characterized in that a pressing protrusion is formed to press the part in contact with the addition, realizing the automation of the entire process, and improving the productivity and reliability of the product.

Description

Strut bearing manufacturing equipment And Strut bearing

The present invention relates to an apparatus for manufacturing a strut bearing and a strut bearing, and more particularly, to an apparatus for manufacturing a strut bearing through a multiple injection process and a strut bearing produced by the manufacturing apparatus.

Multiple injection is a manufacturing method for molding a single product with different materials or colors, and is used as the demand for improved appearance quality increases.

In the multi-injection method, the injection step is repeated several times on top of the intermediate injection product that has undergone the injection step, and the mold structure is complicated and , there was a problem in that the man-hours and required time of the manufacturing process increased.

Accordingly, interest in a method for transferring intermediate injection products using a robot transfer device for multi-injection manufacturing equipment has increased. By allowing the injection step to be performed automatically, manpower consumption was reduced and the process time was shortened.

However, even when an injection manufacturing device using a robot transfer device is used, automation can be realized only in some steps depending on the injection conditions, and if the conditions are not met, manpower input is inevitable, reducing workability and increasing production time. There was a problem that product productivity was lowered.

An embodiment of the present invention has been devised to solve the above problems, and it is possible to significantly reduce the defective rate of the sealing part that may occur in the third injection step, thereby improving the productivity and reliability of the product. An object of the present invention is to provide a strut bearing.

The manufacturing apparatus for manufacturing a strut bearing through the multiple injection process of an embodiment of the present invention is to solve the above problems, an insert having a plurality of through-holes is inserted, and a body having a hollow body and extending from one side of the body a first mold part for molding a first injection product formed as a flange part; a second mold part for molding a second injection product in which a sealing part is further formed along one inner and outer peripheral surface of the flange part; and a third mold part for molding a third injection product in which a damper part is further formed on the other side of the flange part and on the outside of a part of the body, wherein the third mold part is inserted and fixed with the second injection part and a tertiary upper mold coupled to the tertiary lower mold to form a tertiary molding space, and the tertiary upper mold has one side surface of the flange portion and the sealing It is characterized in that the pressing protrusion for pressing the portion in contact with the addition is formed.

In the first injection-molded product, a first through-portion communicating with a portion of the through-holes and a second through-portion communicating with the remaining through-holes may be formed in the flange portion, and the second through-portion may extend outward on one side. An extension portion extending to the outer peripheral surface of the flange portion may be formed, and in this case, the pressing protrusion may be formed to correspond to the position of the extension portion.

The sealing portion may be formed of an outer sealing portion formed along an outer circumferential surface, an inner sealing portion formed along the inner circumferential surface, and an expanded sealing portion seated on the expanded portion, wherein the pressing protrusion is disposed on the third lower mold As the car upper mold is coupled, it may be arranged to press the outside of the expansion sealing part.

As the tertiary upper mold is coupled to the tertiary lower mold, a tertiary injection hole disposed on one side of the first through portion may be formed through, and the tertiary molding space may be formed through the tertiary lower portion. It can be formed in a mold.

In order to solve the above problems, the strut bearing of an embodiment of the present invention includes a housing having a body having a plurality of through-holes inserted therein, a hollow body, and a flange extending from one side of the body; a sealing part formed along one inner and outer circumferential surface of the flange part; and a damper portion formed to surround the other side surface of the flange portion and a portion of the body, wherein the flange portion includes a first through portion communicating with some of the through holes, and a second through portion communicating with the remaining through holes. A through portion may be formed, and the second through portion may be extended outwardly on one side to form an extended portion extending to an outer circumferential surface of the flange portion, and the sealing portion may include an outer sealing portion formed along an outer circumferential surface, and an inner circumferential surface It is characterized in that it is formed of an inner sealing part which becomes a concave part, and an expansion sealing part which is seated on the expansion part and is pressurized to form a concave surface.

A locking part to be latched and fixed to the first through part may be further formed.

As described above, according to the problem solving means of the present invention, various effects including the following items can be expected. However, the present invention is not established only when exhibiting all of the following effects.

In the strut bearing manufacturing apparatus according to the present invention, an extension forming protrusion forming an extension portion extending inwardly from one outer circumferential surface of a flange portion is formed in a first upper mold to provide a certain or more adhesive force between the housing and the sealing portion.

In addition, the first mold part includes a first fixing pin and a coupling pin that are coupled to each other so that a first through part is formed on the outer circumferential surface of the flange part, so that the molten resin can be injected to the opposite side of the damper part, so that the triple of the second injection product is formed. Realization of injection automation.

The first fixing pin is formed of three or more that are spaced apart from each other by a predetermined distance based on the central axis of the hollow, and has the effect of improving the reliability of the product by molding each component of the injection product at a more accurate position.

The strut bearing according to the present invention has an extension part and an extension seal seated on the extension part, and has the effect of improving the durability and reliability of the product by improving the adhesion between the flange part and the sealing part.

At this time, the upper surface of the expansion seal is pressurized to form a concave surface, thereby preventing the sealing part from being arbitrarily separated by the pressure generated during molding of the damping part, thereby significantly improving productivity, and at the same time, the damping part molding material moves to the upper side of the flange part It increases the effect of improving the durability and reliability of the product by preventing

1 is a strut bearing manufacturing apparatus according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the first mold part of Figure 1;
Figure 3 (a) is a perspective view in another direction of the first lower mold of Figure 2, Figure 3 (b) is a perspective view in another direction of the first upper mold of Figure 2;
4 is a cross-sectional perspective view of a fixing groove molding part in a state in which a first injection product is formed in the first mold part of FIG. 2;
Figure 5 (a) is an enlarged cross-sectional view of the portion where the first fixing pin of the first mold portion of Figure 2 is disposed, Figure 5 (b) is a portion of the portion where the first support pin of the first mold portion of Figure 2 is disposed Sectional enlarged view.
6 is an exploded perspective view of the second mold part of FIG. 1 ;
Figure 7 (a) is a perspective view in another direction of the second lower mold and the seal forming part of Figure 6, Figure 7 (b) is a perspective view of the second upper mold of Figure 6 in another direction.
8 is a cross-sectional view in the BB direction in a state in which a second injection product is formed in the secondary mold part of FIG. 6;
9 (a) is an enlarged cross-sectional view of a portion in which the second fixing pin is disposed in the secondary mold part of FIG. 6, and FIG. 9 (b) is a portion in which the second support pin is disposed in the secondary mold part of FIG. 6 enlarged section of the .
10 is an exploded perspective view of the third mold part of FIG. 1 ;
11 is a perspective view in another direction of the third upper mold of FIG. 10;
12 is a perspective view from another direction of the third lower mold and damper molding of FIG. 10;
13(a) is a cross-sectional view in the Ea-Ea direction in a state in which the third injection product is formed in the third mold part of FIG. 10, and FIG. 13(b) is the third injection product in the third mold part of FIG. Cross-sectional view in the Eb-Eb direction in the formed state.
14 is a perspective view of a strut bearing according to an embodiment of the present invention;
15 is an exploded perspective view of FIG. 14;
Fig. 16(a) is a cross-sectional view in the Fa-Fa direction in Fig. 14, and Fig. 16(b) is a cross-sectional view in the Fb-Fb direction in Fig. 14 .
Fig. 17 is a perspective view in another direction of the housing of Fig. 15;
Fig. 18 is a cross-sectional view taken in the HH direction of the damper part of Fig. 15;
Figure 19 is an enlarged view of the sealing portion of Figure 16 (b).

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, detailed descriptions of known functions or configurations in the detailed description are omitted so as not to obscure the gist of the present invention.

In addition, for convenience of explanation below, the direction in which the lower mold is formed is defined as the lower side, the direction in which the upper mold is formed is defined as the upper side, and the direction in which the hollow central axis formed in the housing extends is defined as the axial direction, and from the central axis The vertical direction is defined as the radial direction.

1 is a strut bearing manufacturing apparatus according to an embodiment of the present invention.

Figure 2 is an exploded perspective view of the first mold part of Figure 1, Figure 3 (a) is a perspective view in another direction of the first upper mold of Figure 2, Figure 3 (a) is another view of the first lower mold of Figure 2 Directional perspective view, FIG. 3 (b) is a perspective view in another direction of the first upper mold of FIG. 2, and FIG. 4 is a cross-section of the fixed groove molding part in a state in which the first injection product is formed in the first mold part of FIG. It is a perspective view, and FIG. 5 (a) is an enlarged cross-sectional view of a portion in which the first fixing pin of the first mold part of FIG. 2 is disposed, and FIG. 5 (b) is a first support pin of the first mold part of FIG. 2 is disposed. This is an enlarged cross-sectional view of the part.

6 is an exploded perspective view of the secondary mold part of FIG. 1 , FIG. 7 (a) is a perspective view from another direction of the second lower mold part and the seal forming part of FIG. 6 , and FIG. 7 (b) is the second upper part of FIG. 6 Another perspective view of the mold, FIG. 8 is a cross-sectional view in the B-B direction in a state in which the second injection product is formed in the second mold part of FIG. 6 , and FIG. An enlarged cross-sectional view of a portion in which the fixing pin is disposed, FIG. 9(b) is an enlarged cross-sectional view of a portion in which the second support pin is disposed in the second mold part of FIG. 6 .

10 is an exploded perspective view of the tertiary mold part of FIG. 1 , FIG. 11 is a perspective view in another direction of the tertiary upper mold of FIG. 10 , and FIG. 13(a) is a cross-sectional view in the Ea-Ea direction in a state in which the third injection product is formed in the third mold part of FIG. 10, and FIG. It is a cross-sectional view in the Eb-Eb direction in the state in which the exhibit was formed.

1 to 13 , in the manufacturing apparatus 10 for manufacturing a strut bearing through a multiple injection process according to an embodiment of the present invention, an insert 1130 having a plurality of through-holes is inserted, and a hollow 1140 is formed. A first mold part 100 for molding a first injection product formed of a formed body 1110 and a flange part 1120 extending from one side of the body 1110, one side inner and outer peripheral surface of the flange part 1120 The second mold part 200 for molding a second injection product in which the sealing part 1200 is further formed along the , the other side of the flange part 1120 and the damper part 1300 to the outside of a part of the body 1110 . ) comprises a tertiary mold part 300 for molding a third injection product to be further formed, wherein the tertiary mold part 300 is a tertiary lower mold 310 into which the second injection product is inserted and fixed. ) and a tertiary upper mold 320 coupled to the tertiary lower mold 310 to form a tertiary forming space 330, and the third upper mold 320 has the plan It is characterized in that a pressing protrusion 321 for pressing a portion in contact with one side of the branch 1120 and the sealing portion 1200 is formed.

The strut bearing manufacturing apparatus 10 molds a first mold part 100 for molding a first injection product for triple injection, a second mold part 200 for molding a second injection product, and a third injection product The strut bearing 1000 is produced by including the tertiary mold part 300 and the strut bearing 1000 formed of different materials through a continuous injection process.

At this time, a transfer robot for transferring the injection product is installed between each mold part, and a chucking unit for seating the insert 1130 or intermediate injection product in each mold part and a moving unit for moving the chucking unit forward, backward, left and right, and up and down. A servo robot and a moving belt are installed.

Specifically, the transfer robot is installed between each mold part, and the injection product formed in the mold part is combined and removed by the chucking unit, transferred to the moving belt, and cooled while moving along the moving belt. The cooled injection product is fixed to the chucking unit again and moved for the next injection step. At this time, the chucking unit is formed to be rotatable in order to fix the fixed insert or injection product at an accurate position, and is moved by the moving unit.

Therefore, the strut bearing manufacturing apparatus 10 of the present invention enables each step to be performed automatically without manpower input, thereby improving the stability of the operator and improving workability, and reducing the time and cost required for production. It significantly improves productivity.

In other words, the strut bearing manufacturing apparatus 10 of the present invention has the effect of significantly improving the productivity of the product by providing a plurality of mold parts and a transfer robot so that the entire process can be performed automatically.

The first mold part 100 is coupled to a first lower mold 110 in which an insert 1130 having a plurality of through-holes is inserted and fixed, and the first lower mold 110 to a first molding space ( The housing 1100 is formed with the first upper mold 120 forming the 130 , and the insert 1130 is inserted therein to form the housing 1100 .

At this time, the insert 1130 is formed of a side wall 1131 in which a hollow 1140 is formed and is formed in an axial cylindrical shape, and an extension 1132 extending in a radial direction from one end of the side wall 1131. A plurality of through holes are formed in the portion 1132 along the circumferential surface.

The first lower mold 110 includes a first fixing pin 111 having a coupling protrusion 1111 penetrating a portion of the through hole corresponding to the position of the through hole, and a first support disposed on one side of the remaining through hole. A pin 112 is provided.

Specifically, the insert 1130 is fixed so that the sidewall 1131 is disposed inside the first lower mold 110, and the first fixing pin 111 has a coupling protrusion 2111 formed at the upper end of the through hole at the lower side. is disposed through the insert so that the insert 1130 can be accurately fixed in the predetermined first forming space 130 , and the first support pin 112 is below the remaining through hole not coupled to the first fixing pin 111 . placed in contact with

At this time, the first fixing pin 111 is preferably formed of at least three or more arranged in different directions so that the insert 1130 can be fixed at a more accurate position, in this case, each other based on the central axis of the hollow 1140 . Preferably, they are arranged to be spaced apart by the same distance.

In addition, the first fixing pin 111 and the first support pin 112 are formed to be mixed and arranged to have a predetermined pattern to prevent the insert 1130 from moving during the injection process, and the molten resin in the third injection step later is smoothly supplied to the tertiary molding space 330 and at the same time the product has uniform physical properties as a whole, thereby improving reliability.

Four first fixing pins 111 and eight first support pins 112 are formed in the first lower mold 110 of an embodiment, and the first fixing pins 111 are formed with the central axis of the hollow 1140. It is formed to be spaced apart by 90 degrees in the radial direction as a reference, and two first support pins 112 are formed with the same spacing between the different first fixing pins 111 .

In addition, a contact rib forming part 113 forming a contact rib 1114 in contact with the damper part 1300 in the axial direction of the outer peripheral surface of the body 1110 is formed in the first lower mold 110 , and the flange part 1120 . ) disposed along the lower surface to form a first contact protrusion forming part 114 for forming a first contact protrusion 1127 in contact with the damper part 1300 is formed, and the third contact protrusion forming part 114 is formed along the inner circumferential surface of the lower surface of the body 1110 . A fixing groove forming part 115 for forming a fixing groove 1112 coupled to the car lower mold 310 is formed.

The fixing groove forming part 115 forms a fixing groove 1112 in which the third lower mold 310 and the second injection product are fastened and fixed on the lower inner circumferential surface of the body 1110 to form a first through part 1121 . Make it usable as the tertiary inlet 322 . Therefore, the damper part 1300 can be formed in the opposite direction in which the raw material is injected based on the flange part 1120, thereby omitting the process of rearranging the second injection product for the third injection to realize the automation of triple injection. make it possible

The fixing groove 1112 is coupled to the fixing protrusion 3111 formed on the third lower mold 310 so that the second injection product is fixed at the correct position, and the fixing groove forming part 115 is based on the central axis. It is preferable that at least three or more are formed in different directions and are spaced apart from each other by the same distance.

In addition, the fixed groove forming part 115 is tapered so that the cross-sectional area increases in size toward the upper side, so that insertion and removal of each injection product from each injection unit is easier. Four fixed groove forming parts 115 are formed in the first lower mold 110 of an embodiment, and the fixed groove forming parts 115 are formed to be spaced apart from each other at intervals of 90 degrees based on the central axis of the hollow 1140 . do.

The first upper mold 120 is coupled from the upper side of the first lower mold 110 to form a closed first molding space 130 , and hollow for forming a hollow 1140 in the housing 1100 . A molded portion 124 is formed. At this time, the insert 1130 is fixed to the first molding space 130 so as to be disposed inside the housing 1100 in the first injection product.

At this time, the first upper mold 120 has a coupling pin ( 1211 ) formed with a coupling hole 1211 coupled to the coupling protrusion 1111 in order to form the first and second through sections 1121 and 1122 in the flange section 1120 . 121) and the first corresponding pin 122 penetrating through the extended part forming protrusion 123 and the extended part forming protrusion 123 forming the extended part 1125 corresponding to the position of the first support pin 112. this is formed

The coupling pin 121 is coupled to the coupling protrusion 1111 penetrating the through-hole to form a first through-portion 1121 that communicates with some through-holes, but is not connected to the outer peripheral surface of the flange portion 1120, for sealing. The portion 1200 is not formed. Accordingly, the first through part communicates with the tertiary injection hole 322 formed in the tertiary upper mold 320 so that the damper part 1300 can be formed below the flange part 1120 and at the same time, the damper part 1300 . ) forms a locking part 1311 that can be hooked and fixed to the first through part 1121 to improve the adhesion between the housing 1100 and the damper part 1300 .

The extension forming protrusion 123 is formed in the opposite direction of the first support pin 112 to form an extension 1125 extending inward from the outer peripheral surface of one side of the flange portion 1120, and the flange portion 1120 and The adhesion of the sealing part 1200 is improved.

At this time, in order to increase the effect of improving the adhesion, the first fixing pin 111 , the first support pin 112 , the coupling pin 121 and the first corresponding pin 122 are formed to have a larger cross-section than the cross-section of the through-hole and are caught. The portion 1311 and the expansion sealing 1230 have a structure in which the first through portion 1121 and the second through portion 1122 are caught and fixed inside.

The hollow molding part 124 is formed to protrude from the inner circumferential surface of the first upper mold 120 to abut against the first lower mold 110 to form a hollow 1140 open in the axial direction in the housing 1100 . And, along the outer circumferential surface of one side of the flange part 1120, the first seating part forming part 125 on which the outer sealing part 1210 is seated, and the outer sealing part 1210 and the flange part 1120 to improve the adhesion of the flange part 1120. The first seating part forming part 125 for forming the second contact protrusion 1124 protruding along the first seating part 1123 is formed.

In addition, the seating part forming part 127 for forming the second seating part 1126 on which the connection seal 1240 is seated is formed so that the sealing part 1200 can be firmly formed on the flange part 1120 .

Therefore, in the strut bearing manufacturing apparatus 10 of the present invention, the first fixing pin 111 and the first supporting pin 112 have a predetermined pattern and are mixed so that the insert 1130 is fixed at a more accurate position and at the same time, the first It has the effect of improving the reliability of the product by making the exhibit have the same physical properties as a whole.

In addition, the fixing groove molding part 115 is formed so that the second injection product can be fixed at a more accurate position of the third lower mold 310 to increase the product reliability effect and at the same time communicate with the third injection port 322 . The first through-part 1121 is formed to enable the third injection without rearranging the second injection product, thereby realizing the automation of the triple injection.

The second mold unit 200 includes a second lower mold 210 into which the first injection product is inserted and fixed, and a closed second molding space 230 coupled to the second lower mold 210 . It is formed of the secondary upper mold 220 to form, and the sealing molding part 240 for molding the sealing part 1200 on one side of the first injection-molded product.

The second lower mold 210 has a first contact protrusion 1127 formed on the lower side of the flange part 1120 on the upper side so that the first injection product is fixed at the correct position in the first molding space 130 is seated. The first contact protrusion seating part 213 is formed, and a fixing groove seating part 214 in which the fixing groove 1112 is seated is formed in the part where the first contact protrusion seating part 213 is recessed and one end of the hollow 1140 is inserted, and the housing 1100 is formed. A body fixing protrusion 215 is formed to be seated between the contact ribs 1114 for fixing.

In addition, the first through portion 1121 has a second fixing pin 211 having an insertion protrusion 2111 penetrating through the first through portion 1121 to prevent a seal from being formed, and a second through portion 1122 . A second support pin 212 inserted a predetermined distance of the second through part 1122 is formed in order to prevent a seal from being formed under the .

Specifically, the second support pin 212 is inserted into the lower side of the second through part 1122 by a predetermined distance, and is disposed not to be in contact with the lower side of the through hole so that the seal is seated inside the second through part 1122 . Accordingly, the contact area between the sealing part 1200 and the flange part 1120 is increased, so that the adhesive force is improved.

Therefore, in the second lower mold 210 of the present invention, a plurality of structures complementary to each part of the first injection product are formed, so that the first injection product is positioned more accurately in the second molding space 230 . position and at the same time prevent the first injection product from moving during the injection process to improve product reliability.

The second upper mold 220 is formed with a secondary injection hole 222 through which the molten resin forming the sealing part 1200 is injected, and is disposed on the upper side of the connection part 1126 to form the connection sealing 1240. A connection part forming surface 221 is formed. At this time, the secondary injection hole 222 is molded on the connection part forming surface 221 so that the sealing part 1200 can be integrally formed.

The sealing molding part 240 is disposed between the second lower mold 210 and the second upper mold 220 and is fixed to the second lower mold 210 on the flange part 1120 of the first injection product. A plurality of outer sealing ribs 1211 can be formed at the same time as the sealing portion 1200 is formed on the side surface.

Accordingly, the seal forming part 240 is formed of the first seal forming part 241 and the second seal forming part 242 , and the first and second seal forming parts 241,242 are formed to be separated in a radial direction so as to be separable in a radial direction. It is formed to be detachably attached to the car lower mold 210 . However, the shape of the seal formed by coupling the first and second sealing molding parts 241,242 to the sealing molding part 240 may be variously changed according to the shape of the sealing part 1200 .

Therefore, the secondary mold part 200 of the present invention is provided with various structures complementary to the first injection molded product to enable more precise injection, thereby reducing the defect rate of the product and increasing the productivity and product reliability improvement effect. .

The tertiary mold part 300 forms a tertiary lower mold 310 into which the secondary injection product is inserted and fixed, and a tertiary molding space 330 that is coupled to and sealed with the tertiary lower mold 310 . The tertiary upper mold 320 and the tertiary lower mold 310 and the tertiary upper mold 320 are formed with a damper molding part 340 for molding the damper part 1300, A damper part 1300 formed to surround a lower surface of the flange part 1120 and a partial outer surface of the body 1110 is formed below the flange part 1120 .

The tertiary lower mold 310 is inserted into one side of the hollow 1140 of the second injection product, and a positioning part 311 for guiding the fixing position of the second injection product in the tertiary molding space 330 is provided. It is formed to protrude, and the fixing protrusion 3111 coupled to the fixing groove 1112 is formed along the outer circumferential surface of the positioning part 311 .

At this time, the fixing protrusions 3111 are formed so that the size of the cross-sectional area increases toward the upper side, so that insertion and removal of the second injection-molded product is easier, and in order to fix the second injection-molded product at a more accurate position, each other relative to the central axis of the hollow It is preferable to form at least three or more arranged in different directions, and in this case, the fixing protrusions 3111 are preferably formed to be spaced apart from each other by a predetermined interval.

In addition, it is preferable that the fixing groove 1112 and the fixing protrusion 3111 are complementary to each other and formed in a polygonal shape to contact each other in a plurality of directions. However, in consideration of manufacturing convenience and fixing power, the fixing groove 1112 and the fixing protrusion 3111 of one embodiment have a rhombic shape formed so that three sides are in contact, and are formed in four pieces and are formed at 90 degrees to each other based on the central axis of the hollow. formed at intervals.

The tertiary upper mold 320 is coupled to the upper side of the tertiary lower mold 310 to form a closed tertiary molding space 330 in the tertiary lower mold 310 by coupling, A tertiary injection hole 322 is formed through the first through portion 1121 to correspond to the position of the first through portion 1121 , and the sealing portion 1200 is seated on the extended portion 1125 corresponding to the position of the first through portion 1121 on the lower side thereof. ), a pressing protrusion 321 for pressing is formed.

The pressing protrusion 321 is formed in plurality, and protrudes from the inner surface of the tertiary upper mold 320 and presses the upper surface of the expansion seal 1230 seated on each expansion part 1125, the damper part 1300 ) minimizes the failure rate of the sealing part 1200 due to an increase in pressure generated during formation. Therefore, the shape of the pressing protrusion 321 is formed to be the same as that of the extension 1125 , but it is preferable that the size is smaller than that of the extension 1125 .

Specifically, the pressing protrusion 321 is disposed on the outside of the expansion sealing 1230 by the combination of the tertiary lower mold 310 and the tertiary upper mold 320, and presses it to the first through part 1121. As the molten resin is injected through the molten resin, the expansion seal 1230 is prevented from being separated from the expansion part 1125 by the pressure generated from the lower side to the upper side of the flange part 1120 .

Therefore, in the strut bearing manufacturing apparatus 10 of the present invention, the molten resin forming the damper part 1300 is injected from the upper side of the flange part 1120 by having a first through part 1121, and the damper part 1300 is The triple injection manufacturing apparatus of the strut bearing 1000 ( 10) to realize automation.

Accordingly, the production speed of the product is improved by excluding the realignment process of rotating the second injection molded product removed from the second lower mold 210 in order to form the damper part 1300 on the lower side of the conventional flange part 1120, It has the effect of remarkably improving product productivity by minimizing the intervention of manpower to improve workability and reduce production costs.

Therefore, the strut bearing manufacturing apparatus 10 of the present invention realizes the automation of triple injection by excluding the process of rearranging the position of the intermediate injection molding when fixing the intermediate injection molding to each mold part used in the injection process.

Accordingly, it has the effect of improving the productivity by significantly reducing the production cost and production time of the product, and also improving the reliability of the product by improving the adhesion of each component.

Figure 14 is a perspective view of a strut bearing according to an embodiment of the present invention, Figure 15 is an exploded perspective view of Figure 14, Figure 16 (a) is a cross-sectional view in the Fa-Fa direction of Figure 14, Figure 16 (b) is a view of Figure 14 It is a cross-sectional view in the Fb-Fb direction. 17 is a perspective view of the housing of FIG. 15 in another direction, FIG. 18 is a cross-sectional view of the damper part of FIG. 15 in the H-H direction, and FIG. 19 is an enlarged view of the sealing part of FIG. 16(b).

14 to 19 , in the strut bearing 1000 produced by the strut bearing manufacturing apparatus according to an embodiment of the present invention, an insert 1130 having a plurality of through-holes is inserted, and a hollow 1140 is formed in the body. A housing 1100 formed of a 1110, a flange portion 1120 extending from one side of the body 1110, a sealing portion 1200 formed along an inner and outer circumferential surface of one side of the flange portion 1120, and the It includes a damper part 1300 formed to surround the other side of the flange part 1120 and a part of the body 1110 part,
The flange portion 1120 may include a first through-hole 1121 communicating with some of the through-holes and a second through-portion 1122 communicating with the remaining through-holes, and the second through-hole may be formed. An extension 1125 extending to the outer circumferential surface of the flange portion 1120 by extending one side outward may be formed, and the sealing portion 1200 may include an outer sealing portion 1210 formed along the outer circumferential surface and , characterized in that it is formed of an inner sealing portion 1220 formed along the inner circumferential surface, and an expansion sealing 1230 seated on the expanded portion 1125 and pressurized to form a concave surface 1231 .

In this case, it is preferable that a fixing groove 1112 coupled to the third lower mold 310 is further formed on the inner circumferential surface of the other side of the body 1110 .

The housing 1100 is formed of a body 1110 having a hollow 1140 formed therein, and a flange portion 1120 bent from the body 1110 and extending in the radial direction, and an insert 1130 having a plurality of through-holes formed therein. inserted and formed.

The body 1110 has a cylindrical shape open in the axial direction, and a contact rib 1114 protruding to increase the contact area with the damper unit 1300 is formed on the outer surface, and the third lower mold ( 310) and a fixing groove 1112 to be locked is formed, and a locking protrusion 1113 for fixing the bearing and the upper cup is formed on the upper inner circumferential surface.

The flange portion 1120 extends radially from the upper side of the body 1110 and has a disk shape in which a hollow 1140 is formed, and the first through portion 1121 and the second through portion 1122 are mixed and formed. In order to increase the contact area with the sealing part 1200 and the damper part 1300 , a second contact protrusion 1124 , an extension part 1125 , a connection part 1132 , and a first contact protrusion 1127 are formed.

The first through-portion 1121 communicates with the through-hole, is formed to pass through the flange portion 1120 , is used for fixing to the first and second mold portions 100 and 200 , and is used for fixing the third mold portion of the third mold portion 300 . It communicates with the car inlet 322 so that the damper part 1300 can be molded to the lower side of the flange part 1120 .

The second through-portion 1122 communicates with the through-hole, and an extension 1125 on which the extension seal 1230 is seated is formed on the upper surface of the flange portion 1120 so that the sealing portion 1200 and the housing 1100 are formed. Improves adhesion.

To this end, the extension part 1125 is formed in a radial direction from the first seating part 1123 toward the central axis. In addition, in order to further improve the adhesive force, the second through-hole 1122 has a larger cross-sectional area than the through-hole so that it can be structurally caught and fixed, and one side of the extension 1125 is bent to increase the attachment area. is formed

The first seating portion 1123 is formed along the outer peripheral surface of the upper surface of the flange portion 1120 so that the outer sealing portion 1210 is seated, and a second contact protrusion 1124 along the first seating portion 1123 to improve adhesion. ) are spaced apart to form a plurality of protrusions.

In addition, a connection part 1132 connecting the outer sealing part 1210 and the inner sealing part 1220 is formed so that each configuration of the sealing part 1200 can be integrally formed, and the first contact protrusion along the lower side. 1127 is formed to protrude to increase the contact area with the damper unit 1300 to improve adhesion to the damper unit 1300 .

The insert 1130 has a hollow 1140 formed therein and a side wall 1131 disposed inside the body 1110, and an extension 1132 formed extending from the side wall 1131 and disposed inside the flange 1120. , and a plurality of through-holes are formed along the extension portion 1132 to improve the rigidity of the housing 1100 against axial and radial loads, and at the same time allow each injection molded product to be fixed to each mold portion.

The sealing part 1200 includes an outer sealing part 1210 formed along the outer peripheral surface of one side of the flange part 1120 , an inner sealing part 1220 formed along the inner peripheral surface, and an expansion sealing seated on the expansion part 1125 . 1230 and a connection seal 1240 connecting the outer sealing part 1210 and the inner sealing part 1220 through the expansion sealing 1230.

At this time, the upper surface of the expansion sealing 1230 is pressed by a pressing protrusion 321 to prevent the expansion 1125 and the expansion sealing 1230 from being separated by the pressure generated during molding of the damper 1300 and is concave. It is formed of a surface 1231 .

In other words, the expansion sealing 1230 is compressed from the inside of the second through-portion 1122 by the pressing protrusion 321 to improve the adhesion to the inner surface of the second through-portion 1122, and to the inside of the second through-portion ( 1122), a structure that can be caught and fixed is formed to increase the effect of improving adhesion.

The damper part 1300 includes a first support surface 1310 disposed on the outside of the lower surface of the flange part 1120 to support an axial load, and a second support surface 1320 formed on the outside of the body 1110 . is formed to reduce the load generated by vehicle operation, etc.

At this time, in order to improve the adhesion between the damper part 1300 and the housing 1100 , the first support surface 1310 has a locking part 1311 that is hooked and fixed to the first through part 1121 , and the flange part 1120 . A first seating groove 1312 in which the first contact protrusion 1127 formed on the lower side is seated, and a seating protrusion 1313 inserted by a predetermined distance to one side of the second through part 1122 to be seated are formed, and the second A rib groove 1321 formed to be complementary to the contact rib 1114 is formed in the support surface 1320 .

Accordingly, the strut bearing 1000 of the present invention forms the concave surface 1231 of the expansion seal 1230 to significantly reduce the defect rate that may occur during the manufacturing process, thereby improving product productivity, and the housing 1100 and the damper part 1300 . ) has the effect of improving the reliability and durability of the product by providing a plurality of structures that are complementary to each other to improve adhesion.

In the above, preferred embodiments of the present invention have been exemplarily described, but the scope of the present invention is not limited to such specific embodiments, and it is within the protection scope of the present invention that can be appropriately changed within the scope described in the claims. corresponds to

10 manufacturing device
100 1st mold book
110 first lower mold 111 first fixing pin 1111 coupling protrusion
112 First support pin 113 Contact rib forming part
114 First contact protrusion forming part 115 Fixed groove forming part
120 First upper mold 121 Coupling pin 1211 Coupling hole
122 First corresponding pin 123 Expansion part forming projection 124 Hollow forming part
125 First seating part forming part 126 Second contact protrusion forming part
127 Second seating part forming part 130 First forming space
200 Second mold part
210 2nd lower mold 211 2nd fixing pin 2111 Insertion projection
212 Second support pin 213 First contact protrusion seating part 214 Fixing groove seating part
215 Body fixing protrusion 220 2nd upper mold 221 Connection forming surface
222 2nd injection hole 230 2nd molding space 240 Sealing molding part
241 First sealing molding part 242 Second sealing molding part
300 3rd mold part
310 3rd lower mold 311 aligning part 3111 fixing protrusion
320 3rd upper mold 321 Presser 322 3rd injection hole
330 3rd molding space 340 Damper molding part
1000 Strut Bearings
1100 Housing 1110 Body 1114 Contact Rib
1112 Fixing groove 1113 Sliding protrusion
1120 Flange
1121 First through portion 1122 Second through portion 1123 First receiving portion
1124 second contact protrusion 1125 extension part 1126 second seating part
1127 First contact protrusion 1130 Insert 1131 Side wall
1132 extension 1140 hollow
1200 Sealing part 1210 Outer sealing part 1211 Outer sealing rib
1220 Inner sealing part 1221 Inner sealing rib
1230 Expansion sealing 1231 Concave surface 1240 Connection sealing
1300 Damper part 1310 First support surface 1311 Locking part
13111 Second blocking projection 13112 Support projection 13113 Connecting projection
1312 First seating groove 1313 Seating projection
1320 Second support surface 1321 Contact rib

Claims (6)

In the manufacturing apparatus for manufacturing a strut bearing through a multiple injection process,
a first mold part into which an insert having a plurality of through-holes is inserted, a first mold part for molding a first injection product formed of a hollow body and a flange part extending from one side of the body;
a second mold part for molding a second injection product in which a sealing part is further formed along one inner and outer peripheral surface of the flange part; and
a tertiary mold part for molding a third injection product in which a damper part is further formed on the other side of the flange part and on the outside of a part of the body;
The third mold part
It is formed of a tertiary lower mold in which the second injection product is inserted and fixed, and a tertiary upper mold coupled to the tertiary lower mold to form a tertiary molding space, and the tertiary upper mold includes the A pressing protrusion is formed for pressing a portion in contact with one side of the flange portion and the sealing portion,
The first injection product is
A first through-portion communicating with a portion of the through-holes and a second through-portion communicating with the remaining through-holes are formed in the flange portion;
The second through portion
An extension portion extending outwardly on one side and extending to an outer peripheral surface of the flange portion is formed,
The pusher is
Strut bearing manufacturing apparatus, characterized in that formed to correspond to the position of the extension.
delete The method of claim 1,
The sealing part
It is formed of an outer sealing portion formed along the outer circumferential surface, an inner sealing portion formed along the inner circumferential surface, and an expansion sealing portion seated in the expanded portion,
The pusher is
As the tertiary upper mold is coupled to the tertiary lower mold, the strut bearing manufacturing apparatus is characterized in that it is arranged to press the outer side of the expansion sealing part.
According to claim 1,
The third upper mold is
As it is coupled to the tertiary lower mold, a tertiary injection hole disposed on one side of the first penetrating portion is formed through,
The third forming space is
Strut bearing manufacturing apparatus, characterized in that formed in the third lower mold.
A housing comprising: a housing into which an insert having a plurality of through-holes is inserted, a body having a hollow body, and a flange portion extending from one side of the body;
a sealing part formed along one inner and outer circumferential surface of the flange part; and
and a damper part formed to surround the other side of the flange part and a part of the body.
The flange part
A first through-hole communicating with some of the through-holes and a second through-portion communicating with the remaining through-holes are formed;
The second through portion
An extension portion extending outwardly on one side and extending to an outer peripheral surface of the flange portion is formed,
The sealing part
A strut bearing, characterized in that it is formed of an outer sealing portion formed along an outer circumferential surface, an inner sealing portion formed along the inner circumferential surface, and an expanded sealing portion seated on the expanded portion and formed with a concave surface by being pressed.
6. The method of claim 5,
The damper part
Strut bearing, characterized in that the locking portion is further formed to be caught and fixed to the first through portion.

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