KR20090093721A - Knife fixing structure of a knife mold - Google Patents

Abstract

A knife fixing structure of a knife mold is provided to stick the lower end of a knife to the upper side of a lower holder by fixing a fixed block on an upper holder with a bolt. A knife fixing structure of a knife mold comprises an upper holder, a lower holder(120), a pad(130), a knife(140) and a fixed block(150). The lower holder is surface-contacted with lower side of the upper holder. The center part of the lower holder is widely opened. The pad is elastically supported in the opened part of the holder. The knife is surface-contacted with the inner wall of the upper holder. The knife has one or more fixed holes on the surface. The fixed block is pressed down with the circumference of the lower surface of the pad toward the lower holder. The fixed block fixes the knife on the center inner wall of the upper holder with the bolt(B).

Description

Knife FIXING STRUCTURE OF A KNIFE MOLD}

The present invention relates to a knife fixing structure of a knife mold, and more particularly, to an improved knife mold used for cutting a product, and the like, which is easy to assemble a knife and the knife can be completely adhered to the upper surface of the lower mold. It relates to a knife fixed structure of a knife mold.

Generally, knife molds are used to cut LCD films, seals, electronic nameplates, gaskets, printed materials, vacuum moldings, rubbers, and sponges.

Such a knife mold is improved and used in various ways to improve the quality of the product, the representative technique is the patent registration No. 653614 dated November 28, 2006 by the applicant of the present invention (name of the invention It was registered as).

This is a knife mold for cutting and forming a product, in which a first insertion groove is formed along a line corresponding to the outline of the product on one surface, and the first auxiliary insertion groove extends in several places in succession with the first insertion groove. The first mold body of the first mold body, which is inserted along the first inserting groove and the first auxiliary inserting groove of the first mold body to be detachably protruded toward the outside of the first mold body. One end of the first mold body inserted into the groove and fitted into the first auxiliary insertion groove of the first mold body to fix the blade from the center of the first mold body outwardly. A pad and a first mold body which are installed on a surface of one side of the first mold body so as to cover a plurality of hole punch blades and hole punches protruding from the upper portion; It is configured to include an elastic member provided between the pads to provide an elastic force for lifting the pad.

The knife mold according to the prior art configured as described above, the first and second mold body and the pad is formed of a metal material, the blade is inserted into the first and second insertion grooves, respectively, and fixed so as not to move by a fixed rod, The hole punch is detachably coupled to the 1,2 insertion slot, and the pad is fixed to the first and second mold bodies by an elastic body, so that the blade or the hole corresponding to the breakage caused by the repeated use of the blade or the hole punch is generated. Since only the punches are replaced, the first and second mold bodies can be used semi-permanently, so that the cost can be reduced.

However, the above-described conventional knife mold has a problem of assembling and detaching the knife, and when the knife mold is installed on the upper holder and the lower holder, the lower end of the knife does not come into close contact with the upper surface of the lower holder. It was. Accordingly, when cutting the product by using the knife mold of the prior art there is a fear of poor product state.

The present invention has been made to solve the problems of the prior art as described above, an object of the present invention is to provide an improved knife-type knife fixing structure that can be fixed to the top of the lower holder holding the fixed state of the knife. have.

In order to achieve the above object, the present invention

The blade fixed structure of the knife mold,

Award holder

Lower holder which is in surface contact with the lower surface of the upper holder and the center portion is wide open

Pad provided to be elastically supported in the open portion of the lower holder

Knife which is in surface contact with the entire inner wall surface of the upper holder, the surface is formed with at least one fixing hole and

The knife is pressed toward the lower holder by the circumference of the bottom of the pad, the knife is achieved by providing a knife fixing structure of the knife mold comprising a fixing block bolted to the central inner wall surface of the upper holder.

It is preferable that a first inclined portion narrowing toward an end is formed around all sides of the bottom of the pad, and a second inclined portion having a shape corresponding to the first inclined portion is formed on an upper surface of the fixing block.

At least one fixing protrusion is formed on one surface of the fixing block to be inserted into the fixing hole of the knife, and the bolt is preferably passed through the fixing block and the fixing protrusion of the fixing block to fix the bolt to the upper holder. .

The fixing protrusion is preferably formed smaller than the diameter of the fixing hole.

It is preferable to have a washer instead of the fixing protrusion to be positioned in the fixing hole of the knife.

The upper holder and the lower holder is preferably formed integrally with each other.

As described above, the knife-shaped blade fixing structure according to the present invention, by fixing the fixing block to the upper holder with a bolt in a state in which the knife is in close contact with the upper holder, the lower end of the knife to be completely fixed to the upper surface of the lower holder. It becomes possible. In particular, by forming a fixing protrusion on one side of the fixing block, when the knife is fixed to the inner wall of the upper holder by the bolt and the fixing block, there is a predetermined space between the fixing hole formed in the knife itself and the fixing protrusion of the fixing block Naturally, it can be completely fixed to the upper surface of the lower holder. Accordingly, it is a useful invention that can improve the productivity by reducing the defective rate when molding the product using the knife mold of the present invention.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art without departing from the spirit and scope of the present invention described in the utility model registration claims below various modifications and It will be appreciated that it can be changed.

1A and 1B are a plan view and a front sectional view of a knife fixing structure of a knife mold according to an embodiment of the present invention

2 is an enlarged view illustrating main parts of FIG. 1;

3 is a front sectional view of a knife fixing structure of a knife mold according to a first modification of the present invention;

4 is a front sectional view of a knife fixing structure of a knife mold according to a second modification of the present invention.

Explanation of symbols on the main parts of the drawings

100: sword mold 110: upper holder

120: lower holder 130: pad

132: first inclined portion 140: sword

142: fixing hole 150: fixing block

152: second inclined portion 154: fixing protrusion

B: bolt

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention, it will be apparent to those skilled in the art that the scope of the present invention is not limited to these examples.

1A and 1B are a plan view and a front sectional view of a knife fixing structure of a knife mold according to an embodiment of the present invention. 2 is an enlarged view illustrating main parts of FIG. 1. 3 is a front sectional view of the knife fixing structure of the knife mold according to the first modification of the present invention. 4 is a front sectional view of a knife fixing structure of a knife mold according to a second modification of the present invention.

As shown here, the blade fixing structure of the knife mold 100 of the present invention includes an upper holder (110). The upper holder 110 is formed in a state where the center portion is open. The lower holder 120 is in surface contact with the lower surface of the upper holder 110 and has a wide open central portion. The open portion of the upper holder 110 is formed wider than the open portion of the lower holder 120. The upper holder 110 and the lower holder 120 are fixed to each other by the bolt (B). The upper holder 110 and the lower holder 120 may be formed integrally with each other.

The pad 140 is provided to be elastically supported in the vertical direction to the open portion of the lower holder 120. That is, the bolt B penetrates from the bottom of the lower holder 120 and is bolted to the pad. At this time, the spacer B and the compression spring 124 are fitted to the bolt (B). The gap holder 122 prevents the pad 140 from descending further in the direction of the lower holder 120. The compression spring 124 allows the pad 140 to rise in the opposite direction with respect to the lower holder 120.

The knife 140 is provided to be in surface contact with the entire inner wall of the upper holder 110. At least one fixing hole 142 is formed on the surface of the knife 140. The knife 140 is disposed in a state that the blade protrudes higher than the upper surface of the upper holder (110).

Fixing block 150 is pressed toward the lower holder 120 by the four circumference of the bottom of the pad 140, the knife 140 is fixed to the central inner wall surface of the upper holder 110 with a bolt (B).

The upper holder 110, the lower holder 120 and the fixed block 150 is a predetermined space is formed to facilitate the fastening of the bolt (B). The head of the bolt B is located in this predetermined space.

The first inclined portion 132 that is narrowed toward the end is formed around the four sides of the bottom surface of the pad 140. The second inclined portion 152 having a shape corresponding to the first inclined portion 132 is formed on the upper surface of the fixed block 150.

At least one fixing protrusion 154 that is fitted to the fixing hole 142 of the knife 140 is formed on one surface of the fixing block 150. The bolt B passes through the fixing block 150 and the fixing protrusion 154 of the fixing block 150 in order to fix the bolt to the upper holder 110. The fixing protrusion 154 may be formed smaller than the diameter of the fixing hole 142. It is preferable to have a washer (not shown) instead of the fixing protrusion 154 to be positioned in the fixing hole 142 of the knife 140.

With reference to the accompanying drawings will be described the operation of the knife fixed structure of the knife mold according to a preferred embodiment of the present invention having the structure as described above.

Referring back to FIGS. 1A to 4, the upper holder 110 is placed on the upper surface of the lower holder 120 to be in surface contact with each other. In this state, the open central portion of the upper holder 110 is wider than the lower holder 120. At this time, when viewed from the open portion of the upper holder 110, it appears that a portion of the upper surface of the lower holder 120 is exposed. The upper holder 110 and the lower holder 120 is bolted by the bolt (B).

The fixing block 150 is positioned on the inner wall of the upper holder 110 so as to contact the exposed upper surface of the lower holder 120. Then, the fixing block 150 is bolted to the upper holder 110 by fixing the bolt (B) from one side. At this time, the knife 140 between one side of the fixing block 150 and the inner wall of the upper holder 110. ) Is located. Thus, the bolt (B) is bolted to the upper holder 110 through the fixing block 150, the fixing hole 142 of the knife 140.

Thereafter, the pad 140 is coupled to the open portion of the upper holder 110, and the bolt B is inserted from the bottom of the lower holder 120 to be bolted to the bottom of the pad 140. At this time, the bolt B positioned between the pad 140 and the lower holder 120 is provided with a spring 124 and a spacing holder 122. In this way, when the operator presses the pad 140, the compression spring 124 is compressed by the height of the gap holder 122 and the pad 140 is lowered toward the lower holder (120). Thereafter, when the pad 140 held down is freed, the pad 140 is lifted up by the elastic return force of the compression spring 124.

Meanwhile, at least one fixing protrusion 154 is formed on one side of the fixing block 150 to protrude. The fixing protrusion 154 is fitted to the fixing protrusion 154 of the knife 140 is located. In this state, the outer surface of the fixing protrusion 154 and the inner diameter of the fixing hole 142 is spaced apart at predetermined intervals. Then, when the bolt (B) is fastened, the bolt (B) is penetrated through the fixing protrusion 154 of the fixing block 150. The thickness of the fixing protrusion 154 is preferably formed to be equal to or less than the thickness of the knife 140, but is not limited thereto.

As such, the fixing protrusion 154 formed on the fixing block 150 performs a function of fixing the knife 140 to the inner wall of the upper holder 110 by the bolt B, while partially cutting the knife 140. Since it is spaced apart from the fixing protrusion 154, it can be drift. Accordingly, the knife 140 can be in close contact with the upper surface of the lower holder 120 during the molding operation of the product.

In particular, a conventional washer (not shown) may be used instead of the fixing protrusion 154 of the fixing block 150. Of course, the washer at this time should be selected to use a smaller than the diameter of the fixing hole 142 of the knife 140.

Claims (6)

The blade fixed structure of the knife mold, Upper holder; A lower holder which is in surface contact with the lower surface of the upper holder and whose central portion is wide open; A pad provided to be elastically supported at an open portion of the lower holder; A knife that is in surface contact with the entire inner wall of the upper holder, and at least one fixing hole is formed on the surface of the knife; And Knife fixed structure of the knife mold comprising a; fixed block which is pressed toward the lower holder by the circumference of the bottom of the pad, the knife is bolted to the central inner wall surface of the upper holder. The method of claim 1, wherein the first inclined portion that is narrower toward the end is formed around the four sides of the bottom of the pad, the upper surface of the fixing block is characterized in that the second inclined portion having a shape corresponding to the first inclined portion is formed Knife fixed structure of knife mold. The fixing block of claim 2, wherein at least one fixing protrusion is inserted into one surface of the fixing block of the knife, and the bolt passes through the fixing block and the fixing protrusion of the fixing block in turn to bolt to the upper holder. Knife-shaped knife fixing structure, characterized in that for fixing. The knife fixing structure of claim 3, wherein the fixing protrusion is formed smaller than the diameter of the fixing hole. The knife fixing structure of claim 4, wherein the knife fixing structure comprises a washer instead of the fixing protrusion to be positioned at the fixing hole of the knife. The knife holding structure of claim 4, wherein the upper holder and the lower holder are integrally formed with each other.