KR101971469B1 - Injection molding apparatus for integral type suspension strut bearing - Google Patents

Abstract

The present invention relates to a tertiary injection molding apparatus for an integral suspension strut bearing, comprising: a support portion in which a packing portion protrudes from a treated surface of an expansion portion to be inserted into an engagement portion installation hole of a housing; and an engagement portion extending outward from the end portion of the support portion and having an engagement protrusion with a rim that is mounted on a projection of the engagement portion installation hole. Accordingly, adhesion and bonding forces of the housing and the packing portion can be significantly increased, and the housing and the packing portion can be integrally manufactured. Moreover, foreign substances introduced into a gap between treated portions of the housing and a protrusion portion of an upper spring seat can be thoroughly blocked to simplify the manufacture and installation. In addition, adhesion with the housing can be maximized, thereby manufacturing a suspension bearing which can effectively prevent tear due to rotation.

Description

Technical Field [0001] The present invention relates to an injection molding apparatus for an integral type suspension strut bearing,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a third injection molding machine for an integrated suspension strut bearing, and more particularly, to a third injection molding machine for an integral suspension strut bearing for enhancing adhesion and binding force of a packing portion and a housing of a suspension strut bearing .

Suspension Suspension (Suspension Suspension) is a device for improving ride comfort while preventing damage to the vehicle body by absorbing vibration or impact energy transmitted from the road surface by the tire when the vehicle is running, by connecting the axle and the vehicle body.

Such suspensions are classified as Mcpherson strut, Double wishbone, Multi-link, Torsion beam, etc., depending on the bodywork and vibration control method, A strut structure type that uses a shock absorber as a suspension but adds a spring to the axle is widely used.

1 is an external perspective view showing a conventional suspension strut.

1, the conventional suspension strut 100 is installed between a knuckle 120 of a wheel and a vehicle body (not shown), and rotates together with the knuckle 120 when the steering wheel is steered, And a shock absorber 130 that absorbs vibration.

The suspension strut 100 further includes a strut mount 140 installed on a short side of the shock absorber 130 for coupling with the vehicle body.

Figure 2 is a cross-sectional view of the strut mount of Figure 1;

2, the strut mount 140 includes an upper plate 142 and a lower plate 143, and the upper plate 142 and the lower plate 143 are coupled to each other through bolts 145, 150).

The piston rod 132 of the shock absorber 130 is inserted into the center of the strut mount 140 and mounted thereon. At this time, the piston rod 132 is drawn in or drawn out from the upper portion of the shock absorber 130.

A coil spring 136 for absorbing shock transmitted from the road surface is mounted on the outer side of the shock absorber 130. The upper end of the coil spring 136 is supported by an upper spring seat 135 do.

A suspension member 146 for rotating the knuckle 120 and the shock absorber 130 is provided between the lower plate 143 and the upper spring seat 135 of the strut mount 140 when the wheel is steered, Respectively.

A bumper rubber 133 is provided on the outer circumferential portion of the piston rod 132 under the upper spring seat 135 and a piston rod 132 having dust and foreign substances drawn out of the bumper rubber 133 is introduced The upper end of the bumper rubber 133 is inserted into the center mounting hole of the upper spring seat 35 and inserted into the hollow interior of the suspension bearing 146. [

At this time, the upper spring seat 135 is formed with a protrusion 139 protruding upward vertically from the center, and a mounting hole through which the bumper rubber 133 and the piston rod 132 penetrate is formed at the center of the protruding surface of the protrusion 139 And the lower outer periphery of the suspension bearing 146 is inserted into the mounting hole of the protruding portion 139 of the upper spring seat 135.

The suspension strut 100 constructed as above is fixed to the upper end of the suspension strut 100 so that when impact energy is generated from the road surface during traveling of the vehicle, impact energy generated by the reciprocating motion of the piston rod 132 is absorbed and relaxed At the same time, the impact energy is also relaxed by the elastic action of the coil spring 136.

The shock absorber 130, the coil spring 136, and the knuckle 120 can be rotated relative to the vehicle body 130 by the suspension bearings 146 when the vehicle is steered.

In other words, the suspension bearing 146 is a very important element of a vehicle that performs a function of receiving a load in the axial direction and rotating the suspension, and thus various studies are being conducted to improve the performance of such suspension bearings.

3 is a cross-sectional view showing a suspension bearing device disclosed in Korean Patent Laid-Open No. 10-2016-0038743 (entitled "Suspension bearing device, and vehicle equipped with such suspension bearing device and method of manufacturing the same").

The suspension bearing device 200 of FIG. 3 includes a rolling bearing 220, a lower cup 230, and an upper cup 240. At this time, the strut 299 includes the conventional art 200, a damper rod 292, and a suspension spring 293.

The rolling bearing 220 is located in a chamber 212 forming a boundary between the lower cup 230 and the upper cup 240 and includes an outer race 221, an inner race 222, a rolling pot 223, (224). The rolling element 223 is a ball located in the cage 224 and is tilted and contacted between the outer race 221 and the inner race 222.

The lower cup 230 forms bearing means for the suspension springs 293 and comprises a fusible member 260 and a body 250.

The body 250 also comprises a tubular axial portion 251 and an annular outer radial portion 252.

The flexible member 260 also includes a damper pad 270 and two seals 280, 290.

The damper pad 270 is formed to surround the annular outward radial portion 252 and the axial portion 251 of the body 250 of the lower cup 230.

The damper pad 270 is coupled to the body 250 by a molding process.

As the contact area between the damper pad 270 and the spring 293 increases, the bearing capacity of the spring 293 by the damper pad 270 increases, 293, vibration reduction, and load distribution are improved.

In addition, the conventional art 200 can solve the problem of rolling phenomenon and durability deterioration of the rolling element 223 due to foreign matter inflow by blocking the inflow of foreign substances into the inside and outside of the sealing parts 280 and 290.

However, in the prior art 200, the lower cup 230 is made of a polyamide PA66 material reinforced with any glass fiber, and the damper pad 270 is made of a relatively flexible plastic synthetic material such as polyurethane or nitrile rubber As a result, the adhesion of the lower cup 230 and the damper pad 270 is released as time elapses, and the lower cup 230 idles when the steering wheel is steered. .

Also, in the prior art 200, even though the damper pad 270 is made of highly elastic polyurethane or nitrile rubber material, the outer surface of the steering wheel is excessively contacted with and frictioned with the spring, Such as tearing, and the like, frequently occur.

The damper pad 270 and the lower cup 230 are formed by a simple molding method in which the damper pad 270 is formed integrally with the lower cup 230 through the molding process. It is not possible to increase the adhesion between the two layers to a value not less than a threshold value.

Particularly, the unbonding and tearing phenomena of the lower cup and the damper pad are directly related to the safety accident of the vehicle. Therefore, studies for increasing the adhesion and binding force of the lower cup and the damper pad are urgent.

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a packing apparatus, comprising: a support part protruding from a mating surface of an expansion part and inserted into a fitting part mounting hole of a housing; A third aspect of the present invention is to provide a third injection mold apparatus for an integrated suspension strut bearing for manufacturing a suspension strut bearing capable of remarkably increasing the adhesiveness and binding force between the housing and the packing portion by including the retaining portion including the retaining portion .

In addition, another object of the present invention is to provide a housing and a packing part integrally formed to thoroughly block foreign substances introduced into the gap between the housing and the protruding part of the upper spring seat, and to easily manufacture and install the housing, And to provide a third injection mold apparatus for an integrated suspension strut bearing for manufacturing a suspension strut bearing capable of effectively preventing a tear phenomenon caused by rotation by maximizing the torsion struck bearing.

According to an aspect of the present invention, there is provided a solenoid valve comprising: a cover having an upper portion coupled to a strut mount and fixed to a vehicle body; a piston rod having a shock absorber hollow therein, A suspension strut for manufacturing the packing of a suspension strut bearing, comprising: a housing inserted into the hollow of an upper spring seat for supporting and rotatably installed at a lower portion of the cover; and a packing portion provided so as to surround a lower outer circumferential surface of the housing. A third injection apparatus for a bearing, comprising: a fixing plate; a fixed-side mold plate provided adjacent to the fixed plate; and a second mold injection device installed between the fixed plate and the fixed- And an upper surface provided in a space formed at the center of the fixed side mold plate Eel, is formed in a cylindrical shape, the upper mold comprising a center bushing is formed projecting in the center of the core phase; A lower core formed at the center of one side of the movable side mold plate and on which the housing is mounted and eject pins provided on the other side of the movable mold template, mold; Wherein the housing includes a housing body formed in a cylindrical shape having upper and lower openings, a flange extending outward from an outer circumferential surface of the housing body, Wherein the gates connected to the respective runners are connected to the protruding molding surface of the upper core, and the gates are connected to the engaging portion mounting holes of the housing mounted on the lower core at the time of mold closing, And the slide cores include a fixed block; A slide core body coupled to one side of the fixed block and having a semicircular seating groove at an end of the moving block; Wherein the slide core body is formed on an inner circumferential surface of the slide core body to support and release the slide core body, the slide core body corresponding to the shape of the outer circumferential surface of the flange of the housing, The packing part being manufactured by the apparatus comprises: a packing body to be housed in a lower outer circumferential surface and a lower end of the housing body; Further comprising an extension portion extending outwardly from an upper end of the packing body and being accommodated on a lower surface of the flange and having protrusions formed on a surface of the flange that is in contact with a lower surface of the flange, A supporting portion formed to have an outer diameter equal to an inner diameter of the fixing portion mounting hole and inserted into the fixing portion mounting hole of the flange, and a locking protrusion extending outwardly at the end portion of the flange to be fitted to the upper surface of the flange, Wherein the support portion of the engagement portion is inserted into the small-diameter engagement portion mounting hole, the engagement portion of the engagement portion is inserted into the large-diameter engagement portion installation hole, The gates are inserted into the engaging portion mounting holes to inject resin into the inner space of the lower mold, Parts to the injection mold.

delete

delete

delete

delete

According to the present invention having the above-mentioned problems and solutions, the packing part is protruded from the fitting surface of the expansion part and inserted into the fitting part mounting hole of the housing, and the frame part extends outward at the end part of the supporting part, And the fastening force of the housing and the packing can be remarkably increased.

According to the present invention, since the housing and the packing portion are integrally formed, foreign substances introduced into the gap of the housing portion and the protruding portion of the upper spring seat can be thoroughly blocked, and the manufacturing and installation can be simplified and the adhesion with the housing can be maximized It is possible to effectively prevent the tearing phenomenon due to the tearing.

1 is an external perspective view showing a conventional suspension strut.
Figure 2 is a cross-sectional view of the strut mount of Figure 1;
3 is a cross-sectional view showing a suspension bearing device disclosed in Korean Patent Laid-Open No. 10-2016-0038743 (entitled "Suspension bearing device, and vehicle equipped with such suspension bearing device and method of manufacturing the same").
4 is an exploded perspective view illustrating an integral suspension strut bearing manufactured by a third injection mold apparatus according to an embodiment of the present invention.
Fig. 5 is a perspective view of the housing of Fig. 4 as seen from above. Fig.
FIG. 6 is a perspective view of the housing of FIG. 5 as viewed from below.
Fig. 7 is a cross-sectional view showing the engaging portion mounting holes of Figs. 5 and 6. Fig.
8 is a perspective view showing the sealing portion of FIG.
Fig. 9 is a perspective view showing the packing portion of Fig. 4;
Fig. 10 is a side sectional view showing a state in which the latch portion of Fig. 9 is coupled to the engagement portion mounting hole of the housing. Fig.
11 is a perspective view showing a state in which a third injection molding machine, which is an embodiment of the present invention, is opened.
12 is a cross-sectional view showing a state in which the third injection molding apparatus shown in Fig. 11 is closed.
Fig. 13 is a perspective view showing the upper mold of Fig. 11. Fig.
FIG. 14 (a) is a perspective view showing a fixing plate and a runner of FIG. 13, and FIG. 14 (b) is a perspective view showing a state in which one surface of the fixing plate shown in FIG.
15 is a perspective view showing the slide cores of Fig.
16 is a perspective view showing the lower mold of Fig.
17 is a perspective view showing a state in which a secondary injection molding is mounted on the cavity of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

4 is an exploded perspective view illustrating an integral suspension strut bearing manufactured by a third injection mold apparatus according to an embodiment of the present invention.

The integral suspension strut bearing 1 of Fig. 4 is mounted on a suspension of a strut structure type and is manufactured by the third injection mold apparatus of Fig. 10 which will be described later, which is one embodiment of the present invention.

4, the integral suspension strut bearing 1 includes metal balls B, a bearing cage 7, a housing 3, a sealing portion 9, a cover 5, a packing portion 6).

Here, the metal balls B, the bearing cage 7, and the cover 5 are techniques commonly used in an integrated suspension bearing device, and thus a detailed description thereof will be omitted.

Although not shown in the drawings, a metal insert (I), which will be described later, is disposed inside the housing 3. The housing 3 is molded by insert injection molding. The sealing portion 9 is formed by primary molding A housing (3) equipped with a sealing part (9), which is a secondary injection molded article, is manufactured by a secondary injection by mounting a housing (3) which is an injection molded article in a cavity of a secondary injection molding apparatus Which is an embodiment of the present invention, is mounted in a cavity of the third injection mold apparatus of FIG. 10 to be described later and is manufactured through a third injection.

In other words, the integral suspension strut bearing 1 manufactured by the present invention is characterized in that the housing 3 is molded through the primary injection molding, and 2) the sealing portion 9 is connected to the housing 3 through the secondary injection molding 3) The packing part 6 is integrally formed with the housing 3 through the third injection molding machine, which is one embodiment of the present invention. Such first, second and third injection molding processes are automated processes .

FIG. 5 is a perspective view of the housing of FIG. 4, and FIG. 6 is a perspective view of the housing of FIG. 5 viewed from below.

The housing 3 shown in Figs. 5 and 6 has a cylindrical housing body 31 having upper and lower openings, a flange 30 extending vertically outward from an outer circumferential surface of the outer peripheral surface of the housing body 31 at an upward position, (33).

The area of the housing body 31 disposed above the flange 33 is referred to as an upper body 310 and the area of the housing body 31 disposed below is referred to as a lower body 320 Will be referred to herein.

The housing body 31 is formed in a cylindrical shape having an upper and lower portions opened and hollow.

The lower body 320 of the housing body 31 is formed with ribs 321 in the height direction on the outer circumferential surface at intervals and the ribs 321 are formed on the outer peripheral surface of the lower body 320 of the housing body 31 with respect to the packing portion 6 The contact area and the friction coefficient are increased to maximize the adhesion of the packing part 6. [

If the ribs 321 are not formed on the outer circumferential surface of the lower body 320 and the inner circumferential surface of the packing unit 6 is formed as a flat surface as in the present invention, the packing unit 6 and the lower body 320 The tightening of the packing 6 and the lower body 320 is released due to the continuous friction and impact with the upper spring seat 135 of FIG. There arises a problem that the desired function can not be performed.

However, in the present invention, the ribs 321 are formed on the outer circumferential surface of the lower body 320 of the housing 3 and the guide grooves (see FIG. 10 (to be described later) in which the ribs 321 are inserted into the inner circumferential surface of the packing part 6 611 are formed in the housing part 3 and the packing part 6, the adhesion and the binding force of the housing 3 and the packing part 6 are remarkably increased.

The flange 33 is formed so as to extend vertically outward on the outer peripheral surface of one side of the housing body 31.

The flange 33 is formed so that the metal ball receiving grooves 333 on which the metal balls B are mounted are repeated along the arc with an interval inward.

The flange 33 has an outer sealing groove 341 in which the large sealing body 91 of the sealing portion 9 of FIG. 7 described later is inserted into the outer edge of the upper surface, And a sealing hole 344 is formed at one side thereof to be connected to the outer sealing groove 341. At this time, the large sealing body 91 and the seating protrusions 94 of the sealing portion 9 of FIG. 7 to be described later are seated and inserted into the outer sealing groove 341 and the sealing holes 344, respectively.

The flange 33 is connected to the outer sealing groove 341 so that one end of the flange 33 is connected to the outer sealing groove 341 and the other end of the flange 33 is connected to the fixing hole 637, 348 are formed. At this time, it is preferable that four hooking part mounting holes 348 are provided at intervals of 90 degrees when viewed in a plan view.

In addition, the engaging portion mounting hole 348 of the flange 33 is closed by the core during the secondary injection molding so that the sealing portion 9 is not formed. When the flange 33 is opened during the third injection molding, 637 are formed.

Fig. 7 is a cross-sectional view showing the engaging portion mounting holes of Figs. 5 and 6. Fig.

7, one end of the flange 331 is connected to the outer sealing groove 341, and the other end of the flange 333 is connected to the outer sealing groove 341 of the flange 33, (6371) is inserted.

In addition, the engaging portion mounting hole 348 is formed with a step 3481 therein and the engaging protrusion 637 of the engaging portion 637 of the engaging portion 637 of Fig. 10 to be described later is seated on the step 3481 .
That is, the engaging portion mounting hole 348 is formed so that its inner diameter is expanded by the step 3471, and the supporting portion of the engaging portion 637 of FIG. 10 to be described later is inserted into the small diameter engaging portion mounting hole, The latching jaw 637 of the latching portion 637 of FIG. 10 to be described later is inserted.

In other words, the integral suspension strut bearing 1 manufactured by the present invention is capable of remarkably increasing the adhesion and binding force between the packing part 6 and the housing 3 by supporting the engagement step 637 by the step 3481 do.

8 is a perspective view showing the sealing portion of FIG.

8 is inserted into the cavity of the secondary injection molding apparatus and is molded integrally with the housing 3 through the secondary injection. The housing 3, which is the primary injection molded article, is inserted into the cavity of the secondary injection molding apparatus.

The sealing portion 9 is formed in the shape of a circular band and is formed into a circular band shape having a diameter smaller than that of the large sealing body 91. The large sealing body 91 is inserted into the outer sealing groove 341 of the flange 33, Both ends of which are connected to the large sealing body 91 and the disappearing body 92 to be inserted into the reinforcing sealing grooves 343 of the flange 33 The sealing bores 344 of the housing 3 and the anchoring bodies 92 are formed to be vertically spaced apart from the large sealing body 91 and the disappearing body 92, (Not shown), and an auxiliary insertion portion 95, which are inserted into the respective sealing grooves (not shown).

In addition, the seating projections 94 are inserted into the sealing holes 334 of the flange 33 of the housing 3 by secondary injection molding. In detail, the seating projections 94 are formed by injection molding of the housing 3 Is buried in the sealing hole 334 of the flange 33 and the end is buried to a position adjacent to the lower surface 331 of the flange 33 of the housing 3.

In this case, the sealing portion 9 is formed through the secondary injection molding. When the engaging portion mounting hole 348 of the flange 33 of the housing 3 is sealed by the core during the secondary injection molding, The material resin of the sealing portion 9 is injected into the sealing holes 344 but the material resin can not be injected into the engaging portion mounting holes 348. [

FIG. 9 is a perspective view showing the packing part of FIG. 4, and FIG. 10 is a side sectional view showing a state where the latch part of FIG. 9 is coupled to the latching part of the housing.

The packing part 6 of Figs. 9 and 10 is a housing 3 (secondary injection-molded product) to which a sealing part 9 is coupled by a third injection molding machine 500 of Fig. 11, which will be described later, Lt; / RTI >

9, the packing part 6 includes a hollow cylindrical packing body 61 and an extension part 63 extending vertically from the upper end of the packing body body 61 and extending outwardly.

The packing portion 6 is formed with guide grooves 611 spaced along the arc in the inner circumferential surface of the packing body 61 and the guide grooves 611 are formed to extend in the height direction, Each of the ribs 321 of the housing 320 is inserted to increase the coefficient of friction with the housing 3 and the contact area, thereby enhancing the adhesion with the housing 3 and the binding force.

10, the engaging portion 637 includes a support portion 6371 vertically connected to the upper surface 631 of the expansion portion 63 of the packing portion 6, and a support portion 6371 adjacent to the end portion of the support portion 6371 And an engagement protrusion 6373 extending outward from the outer side surface.

The supporting portion 6371 is formed to have the same outer diameter as the inner diameter of the step 3481 of the engaging portion mounting hole 348 of the flange 33 of the housing 3, As shown in Fig.

The stopper 6373 has an area larger than the inner diameter of the step 3481 of the engaging portion mounting hole 348 of the flange 33 of the housing 3 so that the rim is seated on the step 3481.

That is, in the third injection molding, the support portion 6371 is inserted into the inside of the flange 33 of the housing 3 to form the step 3481 of the flange mounting hole 348 of the flange 33, The flange portion 6373 of the flange 33 of the housing 3 passes through the fitting portion mounting hole 348 of the flange 33 of the housing 3 and the frame is seated on the step 3481 of the fitting portion mounting hole 348, ) Can be remarkably increased.

In other words, the packing portion 6 is provided on the outer surface of the lower body 320 of the housing 3 and the lower surface of the flange 33 of the housing 3, and the engaging jaw 6373 of the engaging portion 637, The packing 6 is supported by the latching jaws 6373 even if friction or impact is generated in the packing portion 6 by being brought into contact with the step 3481 of the latching portion mounting hole 348 of the flange 33, It is possible to thoroughly prevent unbinding of the housing 6 and the housing 3. [

FIG. 11 is a perspective view showing a state in which a third injection molding apparatus, which is an embodiment of the present invention, is opened, and FIG. 12 is a sectional view showing a state in which a third injection molding apparatus in FIG.

11 and 12, the tertiary injection mold apparatus 500 includes a upper mold 501, a lower mold 503, slide cores 505 and 505 ', which are moved relative to the upper mold 501, ).

Fig. 13 is a perspective view showing the upper mold of Fig. 11, Fig. 14 (a) is a perspective view showing the fixing plate and runners of Fig. 13, and (b) is a perspective view showing one side of the fixing plate of Fig.

As shown in Fig. 13, the upper mold 501 includes a fixed plate 511 disposed at the outermost side, a fixed side mold plate 515 provided adjacent to the fixed plate 511, a fixed plate 551, An upper core 516 provided in a space formed at the center of the fixed side mold plate 515 and a lower core 516 formed between the upper core 516 and the upper core 516, And a central bushing 517 protruding from the center.

At this time, the protrusion forming surface 5161 of the upper core 516 is brought into contact with the upper surface of the flange 33 of the housing 3 of Fig.

Four gates 514 are formed at intervals on the protrusion forming surface 5161 of the upper core 516 and gates 514 are formed in the protrusion forming surface 5161 of the upper core 516 And is inserted into the interior by the hole 348.

14 (a) and 14 (b), the fixing plate 511 is provided at the outermost side of the upper mold 501 and includes a sprue 5110 to which resin is supplied, And cross-shaped movement paths 5111 for supplying the supplied resin to each of the runners 513 are formed therein.

The runners 513 are connected to the end of each of the movement paths 5111 so as to pass through one surface of the fixing plate 511 and the gates 514 at the end portions are formed on the protrusion forming surface 5161 of the upper core 516, As shown in Fig.

15 is a perspective view showing the slide cores of Fig.

15, the slide core 505 includes an angular pin 551 formed in a pin shape and supporting and releasing a slide core body 555 to be described later, a fixed block 553, a fixed block 553 And a slide core body 555 which moves downward in accordance with the support or release of the angular pin 551.

A semi-circular seating groove 5551 is formed from the end of the slide core body 555 and an inner circumferential surface 5553 forming the seating groove 5551 is formed on the outer peripheral surface of the flange 33 of the housing 3 shown in Fig. As shown in FIG.

That is, the inner circumferential surface 5553 of the slide core body 555 has the flange 33 of the housing 3 mounted on the lower core 533 of the lower die 503 at the time of mold closing and the large sealing body 91 of the sealing portion 9 The resin can be prevented from being injected back into the upper core 516 of the resin injected by the four gates 514 of the upper die 501. [

Fig. 16 is a perspective view showing the lower mold of Fig. 11, and Fig. 17 is a perspective view showing a state in which the secondary injection molding is mounted on the cavity of Fig.

As shown in FIGS. 16 and 17, the lower die 503 is provided with a secondary injection molded product 590 disposed on the outermost side thereof, which is movable between a movable side mold plate 531 and a lower core (533), and eject pins (535) provided at the lower portion of the movable side template (531).

A secondary injection molded product 590 is mounted on the lower core 533.

The lower die 503 is pressed against the flange 33 of the housing 3 of the secondary injection molded product 590 mounted on the lower core 533 at the time of mold closing and the flange 33 of the outer sealing member 91 of the sealing portion 9 The gate 514 is closed by the inner circumferential surface 5553 of the slide core 555 and the engaging portion installation hole 348 of the flange 33 of the housing 3 of the secondary injection- .

In general, the lower core 533 has a characteristic that the temperature is lowered as it is separated from the lower core 533. The present invention can be applied to the lower body 320 of the housing 3 and the packing portion 6 are formed at a position adjacent to the lower core 533, the problem of deterioration in adhesion due to the difference in physical properties is minimized.

When the lower body 320 of the housing 3 is mounted with the lower mold body 503 facing the upper mold, the lower body 320 of the housing 3 and the packing body 6 The packing member body 61 moves away from the lower core 533, resulting in poor adhesion.

That is, when the secondary injection molded product 590 is loaded into the lower core 533 of the lower mold 503, the third injection molding apparatus 500 of the present invention is configured such that the resin is injected from the gates of the upper mold 501 As described above, since the engaging portion 637 is formed outside the injection hole 941 of the sealing portion 9, the adhesion between the packing portion 6 and the housing 3 It is possible to dramatically increase the strength and bonding force.

As described above, the third injection molding apparatus 500 according to an embodiment of the present invention is characterized in that the packing portion is formed protruding from the fitting surface of the expansion portion and inserted into the insertion hole of the sealing portion inserted into the sealing hole of the housing, And the engaging portion including the engaging protrusion for supporting the packing portion through the insertion hole of the sealing portion. Thus, the adhesion and the binding force of the housing and the packing portion can be remarkably increased.

In addition, the third injection mold apparatus 500 of the present invention can be manufactured and installed easily by forming the housing and the packing unit, and thoroughly blocking the foreign matter introduced into the gap of the protruding portion of the protrusion of the housing and the upper spring seat. It is possible to manufacture an all-in-one suspension bearing capable of effectively preventing the tear due to rotation.

1: Integral suspension strut bearing
3: Housing 5: Cover
6: packing part 7: bearing cage 9: sealing part
31: housing body 33: flange 61: packing body
63: extension part 71: blocking hole 91: outer peripheral edge
92: inner peripheral portion 93: reinforced portion 94:
310: upper body 311: cover attachment projection 321: insertion projection
333: metal ball seat groove 341: outer sealing groove 342: inner sealing groove
343: reinforcing sealing groove 344: sealing hole 611: guide groove
500: Third injection mold apparatus 501: Upper mold 503: Lower mold
505: slide core 511: fixed plate 513: runner
515: fixed side mold plate 516: upper core 517: central bushing
551: Angular pin 553: Fixing block 555: Slide core body
531: movable side mold plate 533: lower core 535: eject pin

Claims (5)

And a piston rod of a shock absorber is passed through the hollow, the lower outer circumferential surface of the piston rod is inserted into the hollow of the upper spring seat for supporting the coil spring, A third aspect of the present invention is a third injection molding apparatus for a suspension strut bearing for manufacturing a packing of a suspension strut bearing including a housing rotatably installed at a lower portion of a cover and a packing portion surrounding a lower outer circumferential surface of the housing,
The third mold injection apparatus for the suspension strut bearing
A fixed side plate disposed adjacent to the fixed plate, a runner disposed between the fixed plate and the fixed side plate and moved by the resin, an upper core provided in a space formed at the center of the fixed side plate, And a central bushing formed in a cylindrical shape and protruding from the center of the upper core;
A lower core formed at the center of one side of the movable side mold plate and on which the housing is mounted and eject pins provided on the other side of the movable mold template, mold;
Comprising slide cores,
The housing
And a flange extending outwardly from an outer circumferential surface of the housing body and having engaging portion mounting holes penetrating both surfaces thereof are formed at intervals along an arc,
Wherein the gates connected to each of the runners are connected to the protruding molding surface of the upper core, the ends of the gates are inserted into the engaging portion mounting holes of the housing mounted on the lower core at the time of mold closing,
The slide cores
Fixed block;
A slide core body coupled to one side of the fixed block and having a semicircular seating groove at an end of the moving block;
And an angular pin for supporting and releasing the slide core body,
Wherein the slide core body is formed on an inner circumferential surface forming a seating groove to correspond to a shape of an outer circumferential surface of the flange of the housing,
The packing portion produced by the third injection mold apparatus for the suspension strut bearing
A packing body that is accommodated in a lower outer circumferential surface and a lower end of the housing body;
Further comprising an extension portion extending outward from an upper end of the packing body and being accommodated in a lower surface of the flange and having latch portions protruding from a mating surface that is in contact with a lower surface of the flange,
The catch
A supporting portion formed to have the same outer diameter as the inner diameter of the engaging portion mounting hole of the flange and inserted into the engaging portion mounting hole of the flange and an engaging jaw extending outwardly at the end portion of the flange to be engaged with the upper surface of the flange Including,
Wherein the support portion of the engagement portion is inserted into the engagement portion installation hole of the small diameter and the engagement protrusion of the engagement portion is inserted into the engagement portion installation hole of the large diameter,
Wherein the gates are inserted into the engaging portion mounting holes and the resin is injected into the inner space of the lower mold to mold the packing portion into the injection mold. delete delete delete delete

Images