KR200417864Y1 - Core unit able to rotate versatilely - Google Patents

Abstract

According to the present invention, it is connected to the plastic mold core and the inclined pin for ejecting the finished injection; A guide block for receiving and guiding the inclined pins; A fixed plate assembly disposed below the guide block; And a unit body mounted on the fixed plate assembly and having a pair of long grooves having a curved shape facing each other, and a pair of long grooves for sliding along the longitudinal direction of the long groove and pivoting along the curved surface of the long groove. A pair of sliding members each seated and a rotation member in which both sides are coupled to the pair of sliding members so as to be rotatable in a direction orthogonal to the rotation direction of the sliding member, and the lower end of the inclined pin is fixedly coupled through the upper portion. A rotating polygonal core unit including a core unit provided is provided. According to the disclosed rotating polygonal core unit, the inclined pin slides in the longitudinal direction and is rotatably provided so that the inclined pin itself is less likely to bend, cut, or broken, and the tolerance and inclination of the inclined pin are inclined. There is an advantage that the easy mounting operation can be made by expanding the width of the allowable tolerance for their mounting position.

Mold, Injection, Ejecting, Core, Ball Bushing, Guide, Rotary, Sliding

Description

Core unit able to rotate versatilely}

1 is a partial perspective view showing a side door of a general vehicle,

FIG. 2 is a partial perspective view of an inner panel of the vehicle side door shown in FIG. 1;

3 is a perspective view of a rotating polygonal core unit according to an embodiment of the present invention,

4A and 4B are partial cross-sectional views showing a rotating polygonal core unit according to an embodiment of the present invention, which is installed at a part and another part of a lower mold for injection molding a plastic injection molding,

5A and 5B are exploded perspective views and cross-sectional views of the guide block shown in FIG. 3;

6a and 6b are exploded perspective views and cross-sectional views of the core unit shown in FIG.

7 is a perspective view of a rotating polygonal core unit according to another embodiment of the present invention,

8A and 8B are partial cross-sectional views showing a rotating polygonal core unit according to another embodiment of the present invention, which is installed on a part and another part of a lower mold for injection molding a plastic injection molding,

9 is a perspective view showing the movement and rotation of the guide block shown in FIG.

10A and 10B are exploded perspective views and cross-sectional views of the core unit shown in FIG. 7.

<Explanation of symbols for the main parts of the drawings>

100,200..rotary polygon core unit

110,210 ... incline pin 120,220 ... guide block

121,221 Ball bushing 122,222 Bushing body

130,230 Core unit 135,235 Unit body

131,231 Body wall 132,232 Connecting member

136 ... Sliding member 137 ... Rotating member

140 Bottom plate member 150, 250 Guide block for core unit

160 ... Fixed Plate Assembly 211 ... Moving groove

253.Skip 236 ... Rotating member

The present invention relates to a rotating multi-core core unit for plastic mold, and more particularly, to apply to a plastic mold to be molded plastic by applying a core, such as a pocket of a vehicle side door, to eject the injection molding after completion of molding. A rotating polygonal core unit for supporting an inclined pin to be used.

Hereinafter, the prior art will be described by taking the vehicle side door plastic molding as an example.

1 is a partial perspective view of a side door of a typical vehicle, and FIG. 2 is a partial perspective view of an inner panel of the vehicle side door shown in FIG. 1.

First, referring to Figure 1, the body (B) of the vehicle is mounted so that the side door (D) can be opened and closed, most of such side door (D) is the inner and outer panels are formed in a double box shape door It is manufactured in a form that can embed device parts such as regulator.

Referring to FIG. 2, the inner panel 1 is made of a synthetic resin material which is usually molded by a plastic mold, and a storage space such as a pocket for storing an object during use of the vehicle is formed on the outer surface side, and on the inner surface side. A plurality of mounting holes 2 are formed for mounting the window adjuster, the door lock, and the like.

As such, when the plastic injection-molded product has an additional shape such as a storage space or a mounting hole, in particular, an additional shape having a built-in space in itself is formed, the plastic mold has a shape corresponding to the shape of the isolated space. The core is used, which requires special techniques to eject the plastic injection without damage to the mold after the plastic molding is completed.

Specifically, the plastic mold in which the core is interposed therebetween is divided into upper mold and lower mold like the ordinary mold, and the core part is mounted on the lower mold to form the mounting hole, and the injection molding (inner panel) is lowered. An ejecting device is additionally provided for extracting from the upper part of the inclined pin, which usually serves as the axis of the ejecting operation during ejection of the lower die core, respectively, and penetrates the inclined pin. Guide block, which serves to slide and move in the longitudinal direction while supporting, in a plurality of places of the lower die, and a plurality of places of the lower plate member of the lower die, and a fixed plate assembly under the lower plate member. It is common that it is a form attached to many places, respectively.

However, such a conventional ejecting device, since the inclined pin can only move in the longitudinal direction and cannot be rotated, it is not only easy to bend due to the deformation force generated during plastic molding, but also to be broken or severely broken. In the case of a core having a curved shape, there is a problem that it is difficult to apply.

In addition, the conventional ejecting device as described above has a very small limit of the tolerance for the inclination angle of the inclined pin and the mounting position of the guide block, which makes the mounting work difficult, and therefore highly skilled techniques. There is a problem in that it takes a long time, and also the work time required for mounting, which in turn lowers the productivity.

The present invention was created to solve the above-mentioned problems, and it is less likely that bending, cutting, and breaking of the inclined pin itself will occur, and the tolerance of the inclination angle of the inclined pin and the width of the tolerance of the mounting position of the guide blocks will be reduced. It is an object of the present invention to provide a rotating polygonal core unit with an improved structure that allows for easy mounting work by expanding.

Other objects and advantages of the present invention will be described below and will be appreciated by the embodiments of the present invention. Furthermore, the objects and advantages of the present invention can be realized by the means and combinations indicated in the claims.

Rotational polygon core unit according to an aspect of the present invention for achieving the above object, the inclined pin connected to the plastic mold core for ejecting the finished injection; A guide block for receiving and guiding the inclined pins; A fixed plate coupling body disposed below the guide block; And a pair of unit bodies mounted on the fixing plate assembly and having a pair of long grooves having a curved shape facing each other, and sliding along the longitudinal direction of the long groove and pivoting along the curved surface of the long groove. A pair of sliding members respectively seated in the long groove of the pair, and both sides are coupled to the pair of sliding members so as to be rotatable in a direction orthogonal to the rotational direction of the sliding member, the lower end of the inclined pin is fixed through the upper It includes a core unit having a rotating member for engaging.

Here, a lower plate member is provided between the lower die and the core unit, and the upper block member is preferably equipped with a guide block for the core unit for receiving and guiding the inclined pin.

In addition, according to another aspect of the present invention, the inclined pin connected to the plastic mold core for ejecting the finished injection; A guide block for receiving and guiding the inclined pins; A fixed plate coupling body disposed below the guide block; A unit body mounted on the fixed plate coupling body and having a pair of long grooves having a curved shape facing each other, and both sides of which are seated in the pair of long grooves, respectively, and having a lower end of the inclined pin fixedly coupled therethrough A core unit having a rotatable moving member; A lower plate member disposed between the lower mold and the core unit; And it is mounted on the upper plate member, there is provided a rotating polygonal core unit including a guide block for the core unit for receiving and guide the inclined pin.

In addition, the inclined pin is formed with a moving groove along its outer circumferential surface; The core unit guide block is preferably further provided with a fitting protrusion for fitting into the moving groove.

In addition, the unit body, the lower portion is fixed to the fixed plate coupling body, the pair of body walls are formed to be spaced apart from each other formed in the side grooves facing each other; And two or more connecting members for coupling the pair of body walls in a state spaced apart in parallel.

The guide block may include: a ball bushing through which the inclined pin slides to move; And a bushing body to which the ball bushing is rotatably coupled.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors will properly describe the concept of terms in order to best explain their own design. Based on the principle of definable, it should be interpreted as meanings and concepts corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical ideas of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

3 is a perspective view of a rotating polygonal core unit according to an embodiment of the present invention, Figure 4a is a portion showing a rotating polygonal core unit according to an embodiment of the present invention is installed in a portion of the lower mold for injection molding plastic injection molding 4B is a partial cross-sectional view showing a rotating polygonal core unit according to an embodiment of the present invention installed in another portion of a lower mold for injection molding a plastic injection molding, and FIGS. 5A and 5B are guides shown in FIG. 3. Exploded perspective view and sectional view of a block, FIG. 6: A and 6B are exploded perspective view and sectional drawing of the core unit shown in FIG.

Here, the same reference numerals as in the above-described drawings indicate the same members having the same function.

First, referring to FIG. 3, the rotating polygonal core unit 100 according to an exemplary embodiment of the present invention includes an inclined pin 110, a guide block 120, and a core unit 130. The rotary polygon core unit 100 according to the embodiment of the present invention, as shown in Figure 4a and 4b, the upper end of the inclined pin 110 to the core portion 4 of the lower die 3 When the inclined pin 110 is penetrated, the guide block 120 is installed to be embedded in the lower side of the core 4, respectively, and the core unit 130 is coupled to the lower end of the inclined pin 110. will be.

That is, the inclined pin 110 is connected to the core portion 4 of the lower mold 3 for plastic mold to eject the core portion 4 from the finished injection molding product 1, and the upper end portion of the core portion ( 4) and the bottom is coupled to the core unit 130.

In addition, a guide block 120 is disposed between the core part 4 and the core unit 130, and is coupled to the rotational and positional movement through the inclined pin 110. The guide block 120 is to receive and guide the inclined pin 110, as shown in Figure 5a and 5b, the ball bushing 121 through which the inclined pin 110 is slidably moved. And a bushing body 122 to which the ball bushing 121 is rotatably coupled. Wherein the ball bushing 121, as shown in Figures 4a and 4b, the inclined pin 110 is coupled to penetrate through the inclined pin 110 so that the sliding movement, the bushing body 122 is a lower die ( 3) is mounted on the bushing body 122, the ball bushing 121 is coupled so as to slide by sliding on the bushing body (122).

In addition, the rotating polygonal core unit 100 according to a preferred embodiment of the present invention, the lower die 3 and the core unit 130 is provided with a lower plate member 140, the lower plate member 140 By further providing a guide block 150 for the core unit mounted on the upper surface, it is possible to support the support pin 110 more effectively. Since the configuration of the guide block 150 for the core unit is the same as the guide block 120, a detailed description of the guide block 150 for the core unit will be omitted.

Meanwhile, as illustrated in FIG. 6A, the core unit 130 includes a unit body 135, a sliding member 136, and a rotation member 137.

First, the unit body 135, which is mounted to the fixed plate coupling body 160 disposed below the guide block 120, the lower body is fixed to the fixed plate coupling body 160 is a pair of body wall spaced apart 131 and two or more connecting members 132 for coupling the pair of body walls 131 in a spaced apart state in parallel.

Here, the fixed plate coupling body 160 includes an upper tight plate 161, a lower tight plate 162 and a fixed plate 163, the outer side of the body wall 131 is fixed to the upper tight plate 161, A lower portion of the body wall 131 is fixed to the lower plate 162, and the fixing plate 163 is fixed to the lower portion of the lower plate 162.

In addition, a long groove 131a is formed in each side of the body wall 131 in the horizontal direction of the body wall 131, and the pair of body walls 131 have long grooves 131a formed on the side facing each other. Spaced apart to see.

Next, the sliding member 136 is provided with a pair is seated in the long groove 131a formed in the body wall 131, respectively. The sliding member 136 is formed in a curved shape corresponding to the shape of the long groove 131a is in contact with the long groove 131a, it is possible to slide along the longitudinal direction of the long groove 131a, as shown in Figure 6b As shown, it may be rotated along the curved surface of the long groove (131a).

Finally, the rotation member 137 is disposed between the pair of sliding members 136 and fixedly coupled to the lower end of the inclined pin 110 through the top. The rotating member 137 is rotatably coupled to both side portions of the sliding member 136, so that the rotating member 137 may rotate in a direction orthogonal to the rotating direction of the sliding member 136.

Below, with reference to Figures 4a and 4b will be briefly described an operation example of the rotating polygonal core unit 100 according to an embodiment of the present invention.

In the process of injection molding the plastic injection molding using the plastic mold, when injection solidification of the synthetic resin melt is completed, the upper mold (not shown) is lifted, and the lower mold 3 is lowered, and the injection molding by the ejecting means (1) is taken out.

Rotating polygonal core unit 100 according to a preferred embodiment of the present invention provided with the ejecting means, the core connected to the top of the inclined pin 110 with the injection when the lower die 3 is lowered as described above It acts to eject the part 4 from the mounting opening 2 of the finished injection 1, wherein the inclined pin 110 should be rotated about any point.

That is, according to the lowering action of the lower die 3, the upper end of the inclined pin 110 is pressed, so that the inclined pin 110 is centered on the guide block 150 for the core unit 150 mounted on the lower plate member 140. It is rotated, and the lower end of the inclined pin 110 is also rotated by the core unit 130.

Such rotation of the inclined pin 110 is enabled by the guide block 120, the guide block 150 and the core unit 130 for the core unit, which is the guide block 120 and the guide block for the core unit The ball 150 (121, 151), the bushing body (122, 152) and the time plate 110 is to be coupled to each other by sliding so that the inclined pin (110) can be rotated.

In particular, the top and bottom of the inclined pin 110 is moved in accordance with the rotation, which is the length of the inclined pin 110 from the ball bushing (121, 151) of the guide block 120 and the guide block 150 for the core unit It is also sliding in the direction, the lower end of the inclined pin 110 is rotated by the rotating member 137 of the core unit 130, and the sliding member 136 is slid in the horizontal direction, the inclined pin 110 ) Will move the position of the upper and lower.

In addition, in the rotating polygonal core unit 100 according to an exemplary embodiment of the present invention, the sliding member 136 of the core unit 130 not only slides in the horizontal direction but also as shown in FIG. 6B, the long groove 131a. Since it is possible to rotate along the curved surface of the), while connecting the inclined pin 110 inclined at a predetermined angle across the rotational direction of the rotation member 137, the upper end is connected to the core portion 4 and the rotation member 137 By rotating the lower end through, the core portion 4 can be more easily exposed.

Here, the rotary polygon core unit 100 as described above is merely one preferred embodiment of the present invention, there may be various embodiments that can be substituted for them.

7 is a perspective view of a rotating polygonal core unit according to another embodiment of the present invention, Figure 8a is a rotating polygonal core according to another embodiment of the present invention is installed in a portion of the lower die for injection molding the inner panel of the vehicle side door Figure 8b is a partial cross-sectional view showing a unit, Figure 8b is a partial cross-sectional view showing a rotating polygonal core unit according to another embodiment of the present invention is installed in the other portion of the lower mold for injection molding the inner panel of the vehicle side door, Figure 9 7 is a perspective view illustrating a moving and rotating state of the guide block illustrated in FIG. 7, and FIGS. 10A and 10B are exploded perspective views and cross-sectional views of the core unit illustrated in FIG. 7.

First, referring to FIG. 7, the rotating polygonal core unit 200 according to another exemplary embodiment of the present invention includes an inclined pin 210, a guide block 220, and a core unit 230. The rotary polygon core unit 200 according to another embodiment of the present invention, like the rotary polygon core unit 100 according to an embodiment of the present invention, as shown in Figure 8a and 8b, lower die Guide block 220 having a ball bushing 221 and a bushing body 222 under the state that the upper end of the inclined pin 210 is fastened to the core 14 of (13) and the inclined pin 210 is penetrated. ) Is installed to be embedded in the lower side of the core portion 14, the core unit 230 is coupled to the lower end of the inclined pin (210).

In addition, the rotary polygon core unit 200 according to another embodiment of the present invention, like the rotary polygon core unit 100 according to an embodiment of the present invention, between the lower die 13 and the core unit 230 In addition to the lower plate member 140, and further provided with a guide block 250 for the core unit to be mounted on the upper plate member 140, the inclined pin 210 may be more effectively supported.

Here, the inclined pin 210, a moving groove 211 is formed along the outer circumferential surface in the portion where the guide block 250 for the core unit is disposed, the bushing body 252 of the guide block 250 for the core unit The fitting protrusion 253 is fitted to the moving groove 211 is formed integrally. Accordingly, the inclined pin 210 may rotate while moving along the path of the moving groove 211 coupled to the fitting protrusion 253.

Here, the moving groove 211, a part of which is formed in the longitudinal direction of the inclined pin 210 on the outer circumferential surface of the inclined pin 210, extends inclined in the upper right direction from the top, the end of the extension portion By being formed in a shape extending in the longitudinal direction of the inclined pin 210 again, the inclined pin 210, as shown in Figure 9, while moving along the path of the moving groove 211 approximately in the right direction It is desirable to be able to rotate at an angle of about 90 °.

On the other hand, the core unit 230, as shown in Figure 10a, includes a unit body 231 and the rotational movement member 236. Here, since the unit body 235 has the same configuration as that of the unit body 135 of the rotating polygonal core unit 100 according to an exemplary embodiment of the present invention, a detailed description of the unit body 235 will be omitted. .

The rotary member 236 is disposed between the pair of body wall 231 and both sides are seated in the long groove 231a formed in the body wall 231, and the lower end of the inclined pin 110 through the top and Lock in place. The rotation member 236 is formed in a spherical shape can be slid along the longitudinal direction of the long groove 231a, as shown in Figure 10b, may also be rotated along the curved surface of the long groove 131a It can also rotate in the horizontal direction.

Reference numeral '231', which is not described in FIGS. 10A and 10B, refers to a body wall, and '232' refers to a connecting member.

Below, with reference to Figures 8a and 8b will be briefly described an operation example of the rotary polygon core unit 200 according to another preferred embodiment of the present invention.

The rotating polygonal core unit 200 according to another preferred embodiment of the present invention, like the rotating polygonal core unit 100 according to the preferred embodiment of the present invention, is inclined pin 110 when the lower die 13 is lowered. The core portion 14 connected to the upper end is acted to eject from the mounting hole 12 of the finished injection (11).

In particular, the rotating polygonal core unit 200 according to another preferred embodiment of the present invention, the core portion having a curved shape corresponding to the shape of the mounting hole 12 for the injection of the mounting hole 12 having a curved shape ( In ejecting the injection portion 11, the core portion 14 connected to the upper end of the inclined pin 110 is rotated according to the curved shape and exposed from the injection molded product 11, thereby exposing the core portion having the curved shape. (14) can be easily ejected.

That is, when the upper end of the inclined pin 210 is pressed by the lowering action of the lower die 13, the lower end of the inclined pin 210 is rotated by the core unit 130, accordingly the inclined pin 210 The sliding movement of the guide block 220 and the guide block 250 for the core unit. At this time, the inclined pin 210 is formed in the guide block 250 for the core unit, the movement path is guided by the fitting protrusion 253 fitted into the moving groove 211, the path of the moving groove 211 It slides along and rotates at the same time. This rotation is possible, as shown in Figure 9, by rotating the rotational movement member 236 coupled to the lower end of the inclined pin 210 to be rotated in the horizontal direction, the rotation of the rotational movement member 236 Is guided by the moving groove 211 and the moving groove 211 formed in the inclined pin (210).

Accordingly, in the rotating polygonal core unit 200 according to another exemplary embodiment of the present invention, the inclined pins 210 extend in the longitudinal direction from the ball bushings 221 and 251 of the guide block 220 and the guide block 250 for the core unit. In addition, the sliding member 236 is slidably moved in the horizontal direction and rotates along the curved surface of the long groove 231a and rotates in the horizontal direction, thereby moving and rotating the position of the inclined pin 210 above and below. This will be possible.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

According to the rotary polygon core unit of the present invention, the inclined pin slides in the longitudinal direction and is rotatably provided so that the inclined pin itself is less likely to be bent, cut or damaged, and the tolerance of the inclined angle of the inclined pin and There is an advantage to facilitate the mounting operation by expanding the width of the tolerance for the mounting position of the guide blocks.

In addition, by having a rotating member disposed to be rotatable in the horizontal direction to rotate the inclined pin in the horizontal direction, there is an advantage that can easily eject the core having a curved shape.

Claims (6)

An inclined pin connected to the plastic mold core to eject the completed injection molded product; A guide block for receiving and guiding the inclined pins; A fixed plate coupling body disposed below the guide block; And A pair of unit bodies mounted on the fixing plate assembly and having a curved shape therein, the pair of unit bodies facing each other and sliding along the longitudinal direction of the long grooves and pivoting along the curved surface of the long grooves; A pair of sliding members respectively seated in the long groove, and both sides are respectively coupled to the pair of sliding members so as to be rotatable in a direction orthogonal to the rotation direction of the sliding member, and the lower end of the inclined pin through the top fixedly coupled Rotating polygonal core unit comprising a core unit having a rotating member to. The method of claim 1, A lower plate member is provided between the lower die and the core unit, and the upper polygonal plate unit is provided with a guide block for a core unit for receiving and guiding the inclined pins. An inclined pin connected to the plastic mold core to eject the completed injection molded product; A guide block for receiving and guiding the inclined pins; A fixed plate coupling body disposed below the guide block; A unit body mounted on the fixed plate coupling body and having a pair of long grooves having a curved shape facing each other, and both sides of which are seated in the pair of long grooves, respectively, and having a lower end of the inclined pin fixedly coupled therethrough A core unit having a rotatable moving member; A lower plate member disposed between the lower mold and the core unit; And Rotating polygonal core unit is mounted to the upper plate member upper surface, comprising a guide block for the core unit for receiving and guide the inclined pin. The method of claim 3, wherein The inclined pin is formed with a moving groove along its outer circumferential surface; The core unit guide block is a rotation polygon core unit characterized in that it further comprises a fitting protrusion for fitting into the moving groove. According to claim 1 or 3, wherein the unit body, A pair of body walls having a lower portion fixed to the fixed plate coupling member, the side grooves being formed to face each other, and spaced apart from each other; And And a rotation polygon core unit including two or more connection members for coupling the pair of body walls in parallel spaced apart state. According to claim 1 or 3, wherein the guide block, A ball bushing through which the inclined pin slidably moves; And And a bushing body to which the ball bushing is rotatably coupled.

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