KR101534310B1 - Underpart jig for underpart ring insert of dust cover mould insert - Google Patents

Abstract

The present invention relates to a lower jig for being injected into a lower ring on a metallic mold of a dust cover mold and, more specifically, a lower jig for being injected into a lower ring on a metallic mold of a dust cover mold, which allows to produce a dust cover without errors by checking whether the lower ring injected into the jig can be accurately injected. The lower jig includes a middle plate having a ring assembly hole whose diameter size is enough to receive the lower ring; a plurality of fixing pins coupled to the upper side and the lower side on the middle plate; and a transport grip part coupled to the left side and the right side of the middle plate.

Description

The lower jig for the lower ring of the dust cover molding die

The present invention relates to a lower cover for a lower ring of a dust cover molding die, and more particularly to a lower cover for a dust cover molding tool which can reliably confirm whether a lower ring inserted into a jig has been correctly inserted, So that the lower ring can be inserted into the dust cover forming mold.

A dust cover composed of a rubber material is used to prevent dust from entering the shaft joint portion of the automobile. The dust cover is required to flex freely along with the rigidity of the contact portion. When the mold is molded using the mold, And inserts it.

The conventional mold used for molding the dust cover has upper and lower surfaces opposed to each other on the upper and lower plates and several pins for fixing the ring on the upper side of the lower mold. The upper and lower plates are closely contacted with each other, and a space is formed between the upper and lower dies, and the material is injected into the space to form the dust cover.

In the case of the ring which is placed on the upper side or the upper side or the lower side of the lower mold, it is conventionally determined depending on the manual operation that the time required to put the ring is long considering that dozens of cavities are applied to the gold shape. And there has been a concern about industrial disasters because it is necessary to work with the operator's hand inserted between the open molds.

In order to solve these problems, the inventor of the present invention has developed a jig for ring insertion of a dust cover forming mold and has been patented (No. 10-0786337 (B1) (December 17, 2007)).

The above-mentioned prior art is a jig for ring insertion of a dust cover molding die, comprising: a lower plate having a ring assembly hole having a diameter into which the upper ring is inserted; a plurality of fixing pins coupled to the upper side of the lower plate; A ring assembly hole formed in the upper plate so as to overlap or offset with the ring assembly hole of the lower plate when the knob is pushed or pulled, An upper jig including a carrying handle coupled to left and right sides and a plurality of supports having the same height as the height of the lower shape;

An intermediate plate in which a ring assembly hole having a diameter into which a lower ring is inserted is formed; a plurality of fixing pins engaged with upper and lower sides of the intermediate plate; Upper and lower plates disposed on upper and lower sides of the intermediate plate fixed to the upper plate and the lower plate so as to be symmetrically arranged on the upper plate and the lower plate so as to be aligned with the center of the ring assembly hole of the intermediate plate when the knob is pushed or pulled, A lower jig including a hole having a diameter smaller than the diameter of the inner diameter portion of the ring and a hook having a diameter smaller than the diameter of the inner jig and the ring assembly hole, a carrying handle coupled to the right and left sides of the intermediate plate, and a fixing hole, Respectively.

The above-mentioned conventional ring input jig improves work efficiency and can work without intervention of a worker's hand between molds, thereby greatly reducing industrial accidents.

In recent years, as a part of automobile weight reduction, a design change to reduce the weight of parts has been carried out throughout automobile parts. In the dust cover to which the present invention is applied, the weight is reduced by a method of reducing the thickness of the ring.

KR 100786337 B1 2007.12.17.

Accordingly, the inventor of the present invention has researched and developed the present invention in order to solve all the problems of confirming the directionality of the lower ring in the lower jig among the jig for ring insertion of the conventional dust cover forming mold, And a reverse insertion preventing jig for accurately confirming the directionality of the ring is further included so that the confirmation that the lower ring inserted into the jig has been correctly inserted can be surely made, The present invention has been accomplished on the basis of the technical object of the present invention.

According to a first aspect of the present invention, there is provided an intermediate plate in which a ring assembly hole having a diameter into which a lower ring is inserted is formed, a plurality of fixing pins coupled to upper and lower sides of the intermediate plate, An upper plate and a lower plate disposed above and below the intermediate plate slidably fixed by a snap ring or a nut and symmetrical with respect to the upper plate and the lower plate such that centers of the ring assembly holes of the intermediate plate are aligned with each other when the handle is pushed or pulled A ring feeding hole and a ring discharging hole formed by connecting an engaging portion having a diameter smaller than the diameter of the ring assembly hole and an inner portion having the same diameter as the ring assembly hole, a transport handle coupled to the right and left sides of the intermediate plate, The lower surface of the lower surface including a fixing hole to which the pillars of the lower surface are coupled;

Further comprising: a reverse input preventing jig for supporting the lower jig in a state of being separated from the lower jig; The reverse rotation preventing jig is provided with a first ring support ring and a ring support ring formed on the lower ring support ring so as to have the same diameter as the ring assembly hole so as to be positioned in the hole formed in the lower plate, Forming a second ring bearing formed opposite to the first ring bearing so as to be inserted into the inner groove; The first and second ring receivers are formed with ring engagement grooves at the upper end thereof to be engaged with the ring engagement grooves when the lower ring is inserted upside down, and can be discharged to the outside of the lower jig.

It is possible to accurately check whether the lower ring to be inserted into the jig is correctly inserted when using the lower ring for lower ring injection of the dust cover molding die provided by the present invention.

Therefore, when the lower ring is aligned through the present invention, defective product of the dust cover due to defective insertion can be eliminated.

FIG. 1 is an external perspective view showing an example of a lower ring arranged by a lower surface of a lower cover of a dust cover forming mold according to the present invention. FIG.
Figure 2 is a cross-
3 is an external perspective view showing a preferred embodiment of the lower cover for the lower ring of the dust cover forming mold according to the present invention.
Fig. 4 is a front view of the lower cover of the dust cover molding die of the present invention,
5 is a top plan view of the lower jig for lower ring injection of the dust cover forming mold provided in the present invention
6 is a plan view of the intermediate plate in the lower jig for injecting the lower ring of the dust cover forming mold provided in the present invention
7 is a plan view of the lower surface of the lower cover of the dust cover molding die of the present invention,
8A to 8C are a plan view and a side sectional view showing a state in which the lower ring is inserted into the lower paper using the present invention,
FIGS. 9A and 9B are a plan view and a side sectional view showing a state in which the lower ring is inserted into the lower paper using the present invention,

Hereinafter, an embodiment of the lower ring injection bottom sheet of the dust cover molding die provided by the present invention will be described with reference to the accompanying drawings.

FIG. 1 is an external perspective view showing an example of a lower ring to be aligned by the lower surface of a dust cover molding die provided by the present invention, and FIG. 2 is a sectional view of FIG. 1.

As shown in the case of the lower ring 100 used in the dust cover (not shown), the tension piece 120 having the irregularities formed inside the support 110 is formed to be upwardly inclined, And is insert-molded.

When the lower ring 100 is inserted into the dust cover, the tension piece 120 must be directed upward. In order to insert the lower ring 100, a ring-loading jig I am using it.

However, due to the thickness of the lower ring 100 being thinned or the like, there is a problem in that the jig for ring insertion, which is conventionally used, can not accurately detect the state of insertion, thereby causing defective product of the dust cover. The upper ring lower jig 1 is positively improved in that the lower ring 100 can be provided with a function of confirming whether the jig has been properly inserted by solving a problem.

FIG. 3 is a perspective view of a dust cover forming mold according to a preferred embodiment of the present invention. FIG. 4 is a perspective view of a lower cover of the dust cover forming mold according to the present invention. 5 to 7 show plan views of the upper plate 3, the intermediate plate 2 and the lower plate 4 in the lower jig for injecting the lower ring of the dust cover forming mold provided in the present invention.

As shown in the figure, the lower jig 1 for injecting the lower ring of the dust cover molding die provided in the present invention has an intermediate plate 2, upper and lower plates 3 and 4 located on the upper and lower sides of the intermediate plate 2, ) Are combined with each other.

The intermediate plate (2) forms a plurality of ring-making holes (21) with a diameter in which the lower ring (100) is inserted. A number of fixing pins 5 are coupled to the intermediate plate 2 and retaining rings or nuts 6 are inserted into the fixing pins 5 with the operating holes 31 and 41 formed in the upper plate 3 and the lower plate 4 interposed therebetween. .

The upper plate 3 is provided with an inner portion 32a and a ring assembly hole 21 having the same diameter as the ring assembly hole 21 so as to be superimposed on the upper side of the ring assembly hole 21 formed in the intermediate plate 2, (32b) having a diameter smaller than the diameter of the ring insertion hole (32). The lower plate 4 is provided with an inner portion 42a and a ring assembly hole 21 having the same diameter as the ring assembly hole 21 so as to be superimposed on the upper side of the ring assembly hole 21 formed in the intermediate plate 2, (42b) having a diameter smaller than the diameter of the ring-shaped hole (42b). At this time, the ring injection hole 32 of the upper plate 3 and the ring discharge hole 42 of the lower plate 4 are arranged in directions symmetrical to each other.

Handles 33 and 43 provided on the upper plate 3 and the lower plate 4 are provided on the front of the upper plate 3 and the lower plate 4 in such a manner that grips 33 and 43 are bent upward The inner portion 32a or 42a or the engaging portion 32b or 42b selectively overlaps with the ring assembly hole 21 formed in the intermediate plate 2. [

A transport handle 7 formed by bending a round bar so as to be able to transport the lower jig 1 is coupled to the left and right sides of the intermediate plate 2 and a plurality of struts (not shown) Thereby forming a fixing hole 8 to be joined.

The diameter of the engaging portions 32b and 42b which are part of the ring insertion hole 32 formed in the upper plate 3 and the lower plate 4 and the ring discharge hole 42 is equal to or slightly smaller than the lower diameter of the lower mold constituting the metal mold .

The configuration of the lower sheet having the above configuration is the same as that of the lower jig of the ring-closing jig of the dust cover molding die of the present invention registered in the prior application (10-0786337 B1 (Dec. 17, 2007).

In the present invention, in the construction of the lower jig 1 as described above, the structure of the ring discharge hole 42 formed in the lower plate 4 is changed, and the lower ring 100 is ascertained to ascertain whether the lower ring 100 is correctly raised And a reverse input preventing jig (50).

The backward movement preventing jig 50 is installed to support the lower jig 1 in a state of being separated from the lower plate 4. [ The lower jig 1 may be provided with a setting groove 51 in the back insertion preventing jig 50 so that the lower end of the fixing pin 5 installed on the lower jig 1 is engaged, To be assembled in place at all times.

The reverse rotation preventing jig 50 is provided with a half ring type first ring bearing 52 and a second ring bearing ring 52 on the opposite side of the first ring bearing 52 so as to be positioned below the ring assembly hole 21 formed in the intermediate plate 2, And the second ring bearing 53 is formed with this narrow arc shape.

The first ring bearing 52 and the second ring bearing 53 are inserted into the ring discharge hole 42 formed in the lower plate 4 of the lower jig 1 and are formed in the intermediate plate 2 And does not protrude into the ring assembly hole 21.

The first ring receiver 52 and the second ring receiver 53 are formed with ring engagement grooves 52a and 53a at the upper outer side. The ring engagement grooves 52a and 53a are machined to have a dimension corresponding to the inner diameter of the support body 110 of the lower ring 100 so that the ring engagement grooves 52a and 53a are formed in the ring engagement grooves 52a and 53a when the lower ring 100 is inserted upside down. So that the support 110 of the lower ring 100 can be inserted and engaged.

When the engaging portion 42b of the lower plate 4 is positioned below the ring assembly hole 21 of the intermediate plate 2 in the ring discharge hole 42 of the lower plate 4, Thereby forming a ring support inner groove 42c into which the second ring support 53 having the protrusion is inserted.

The lower ring 100 can be aligned by using the lower jig 1 for injecting the lower ring of the dust cover forming mold of the present invention constructed as described above. Hereinafter, referring to FIGS. 8A to 8C and FIGS. 9A and 9B An example of aligning the lower ring 100 will be described.

First the ring assembly hole 21 formed in the intermediate plate 2 on which the lower jig 1 is placed on the upper side of the reverse rotation preventing jig 50 and the inner portion 32a of the ring insertion hole 32 formed in the upper plate 3, Into the ring assembly hole 21 of the intermediate plate 2 with the tension piece 120 of the lower ring 100 facing upward. At this time, the inner portion 32a of the ring discharge hole 42 formed in the lower plate 4 is made to coincide with the ring assembly hole 21 of the intermediate plate 2. (Fig. 8A)

When the insertion of the lower ring 100 into the ring assembly hole 21 of the intermediate plate 2 is completed as described above, the engagement portion 32b of the ring insertion hole 32 formed in the upper plate 3 is engaged with the intermediate plate 2, And is pushed and moved so as to be positioned on the upper side of the ring-assembling hole 21 of the ring- At this time, the latching portion 32b of the upper plate 3 covers the upper edge of the lower ring 100. Such sliding operation of the upper plate 3 senses that the lower ring 100 is double loaded, 4) It is a function to prevent the lower ring 100 from deviating to the outside when the slide operation or the lower ring 100 is put into the mold (Fig. 8B)

The upper plate 3 is slid and the lower plate 4 is pulled to move the engaging portion 42b of the ring discharge hole 42 to the lower side of the ring assembly hole 21 of the intermediate plate 2, (FIG. 8C) to check whether the battery 100 is properly inserted.

When the tension piece 120 of the lower ring 100 is correctly inserted into the upper plate 3, the back insertion preventing jig 50 is inserted into the ring receiving inner groove 42c formed in the engaging portion 42b of the lower plate 4, The second ring support 53 formed on the lower ring 100 is inserted into the lower ring 100 to support the lower ring 100. In this state, the lower ring is lifted and inserted into the mold.

On the contrary, when the tension piece 120 of the lower ring 100 is turned upside down toward the lower plate 4, the support body 110 of the lower ring 100 is moved to the first and second ring supports 52 and 53 The engaging portion 32b is caught by the second ring receiver 53 and the lower ring 100 when the lower plate 4 is pulled at this time When the lower jig 1 is lifted in this state, the entire lower ring 100 inserted into the lower jig 1 is discharged to the upper portion of the reverse jug prevention jig 50 (Figs. 9A and 9B)

Therefore, when the present invention is used, when the orientation of the lower ring 100 inserted into the lower jig fails to be detected, it is reliably detected by the reverse jam preventing jig 50 to prevent the lower ring 100 having a wrong direction from being inserted You can do it.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of protection of the present invention should not be limited to the described embodiment, but should be determined by the equivalents as well as the claims that follow.

1: (for lower ring insertion) Lower jig 2: Middle plate
21: ring assembly hole 3: top plate
31, 41: Operation hole 32: Ring input hole
32a, 42a: Inner part 32b, 42b:
33, 43: handle 42: ring discharge hole
42c Ring base inner groove 4: Lower plate
5: Retaining pin 6: Retaining ring or nut
7: Carrying handle 8: Fixing hole
50: reverse input preventing jig 51: setting groove
52: first ring bearing 52a, 53a: ring engagement groove
53: second ring bearing 100: lower ring
110: Support 120: Tension piece

Claims (1)

An intermediate plate 2 on which a ring assembly hole 21 having a diameter in which the lower ring 100 is inserted is formed; a plurality of fixing pins 5 which are coupled to upper and lower sides of the intermediate plate 2; The upper and lower plates 3 and 4 (see FIG. 1) arranged on the upper and lower sides of the intermediate plate 2 in which the operating holes 31 and 41 of the long and round circular shape to be fitted are formed and fixed slidably by the snap ring or nut 6 Symmetrically formed on the upper plate 3 and the lower plate 4 so as to be aligned with the center of the ring assembly hole 21 of the intermediate plate 2 when the knobs 33 and 43 are pushed or pulled, The inner ring portion 32a having the same diameter as the assembly hole 21 and the engagement portion 32b having the diameter smaller than the diameter of the ring assembly hole 21 are connected to the ring supply hole 32, A lower jig (1) comprising a hole (42), a carrying handle (7) coupled to the left and right sides of the intermediate plate (2), and a fixing hole (8) to which a plurality of supports joined to the upper jig are engaged;
Further comprising a backward movement preventing jig (50) for supporting the lower jig (1) in a state of being separated from the lower plate (4);
The reverse-rotation preventing jig (50) is located below the ring-assembling hole (21) formed in the intermediate plate (2);
Formed in the engaging portion 32b of the half ring type first ring support 52 and the lower plate 4 so as to have the same diameter as the ring assembly hole 21 so as to be positioned in the ring discharge hole 42 formed in the lower plate 4. [ A second ring support 53 formed on the opposite side of the first ring support 52 so as to be inserted into the ring support inner groove 42c;
The first and second ring receivers 52 and 53 are formed with ring engagement grooves 52a and 53a at the upper outer side so as to be engaged with the ring engagement grooves 52a and 53a when the lower ring is inserted upside down And the lower jig for injecting the lower ring of the dust cover molding die.

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