KR20230083110A - Stacking chuck jig structure for mold pin core - Google Patents

Abstract

The present invention fixes pin cores of various sizes regardless of the height of the pin core and the diameter of the head of the pin core using a stacked structure of upper and lower chuck jigs that are combined and disassembled so as to be stacked in the upper and lower directions. It is possible to easily perform the function of preventing rotation of the pin core during molding work, and to firmly fix the upper and lower chuck jigs stacked up and down using a coupling means, and to simultaneously mold a plurality of pin cores. It relates to a laminated jig structure for fixing a mold pin, which can be processed and has an improved structure so that the pin core can be firmly fixed using bolts to reduce processing errors of the pin core.

Description

Stacking jig structure for fixing mold pin {STACKING CHUCK JIG STRUCTURE FOR MOLD PIN CORE}

The present invention relates to a laminated jig structure for fixing mold pins, and more particularly, by using a laminated structure of upper and lower chuck jigs that are coupled and disassembled so as to be stacked in the upper and lower directions, the height of the pin core and the diameter of the head of the pin core are related. It is possible to easily perform the function of preventing rotation of the pin core during molding and processing of the pin core by fixing pin cores of various sizes without using a coupling means, and it is possible to firmly fix the upper and lower chuck jigs that are stacked up and down using a coupling means. In addition, a plurality of pin cores can be molded at the same time, and the structure is improved to reduce the processing error of the pin core by firmly fixing the pin core using bolts. it's about

In general, an injection molding mold consists of a fixed mold and a movable mold in which a cavity is formed in a closed state. In a closed state, molten resin is injected into the cavity to mold a molded product, and a movable mold is operated to form a fixed mold and a movable mold. Opening the mold and taking out the molded product.

A conventional injection molding mold is provided with a core and angular pins between a fixed mold and a movable mold to form an undercut portion in a molded product, and when the movable mold advances and the fixed mold and the movable mold are closed, the core moves through the molded product due to the action of the angular pin. It is positioned to correspond to the undercut portion, and the core is pulled out of the undercut portion of the molded product by the action of the angular pin in the process of retracting the movable mold and opening the fixed mold and the movable mold.

However, the conventional injection molding mold has a structure in which a core is coupled to the end of an angular pin and a guide hole for guiding the angular pin is formed in a fixed mold. In the process of coming out, the angular pin and the core are shaken, and interference occurs between the core and the undercut portion of the molded product, and accordingly, the undercut portion of the molded product is damaged, resulting in molding defects.

In addition, when an additional shape such as a storage space or a mounting hole is formed in the plastic molding formed by the plastic mold, in particular, an additional shape in the form of a built-in space isolated in itself, the shape of the isolated space in the plastic mold A core having a shape corresponding to is used. In this case, an ejecting device is used to eject the plastic molding without damaging the original shape after plastic molding is completed.

A plurality of cores for forming a molding are inserted on the template plate, and these cores are commonly referred to as pin cores.

As the conventional prior art related to the conventional core pin, as disclosed in Korean Utility Model Publication No. 20-0464732 "Core Pin for Mold" (registration date: 2013.01.09), a hollow is formed inside, one side is stepped and the other side is stepped. It has a smaller diameter than the head, and a thread is formed on the outer circumferential surface of one side; A body having a hollow inside, having threads formed on both inner circumferential surfaces, and having one side screwed with one side of the head; A hollow is formed therein, one side is stepped and has a smaller diameter than the middle portion, and a screw thread is formed on the outer circumferential surface of one side to be screwed to the other side of the body. and an O-ring interposed between the head and the body and between the body and the hole pin to seal the inside.

As a prior art related to the technology of processing the pin core, as disclosed in Korean Patent Registration No. 10-1623734, "Apparatus for processing hairline on the surface of the core of an injection mold" (registration date: 2016.05.18), a branch body; a rotating body connected to the driving unit and rotated, and exposed to one side of the main body; a fixed chuck installed at an end of the rotating body; a rotating shaft detachably engaged and fixed to the fixed chuck, and having a circular plate formed at an end thereof; an inclined block that is detachably mounted on the disc, has an inclined outer surface, and detachably mounts a lower end of the asymmetrical cylindrical core to hold the center of rotation of the core; a fixture provided close to the asymmetrical curved surface of the core; Sandpaper detachably fixed to the end of the fixture and being in close contact with the asymmetrical curved surface of the core to grind the asymmetrical curved surface of the core; an elastic support portion installed between the main body and the fixture and enabling the fixture to move horizontally while elastically and flexibly supporting the fixture; And, the fixture has a configuration including an inclined surface formed on a lower surface of an end of the fixture to correspond to an outer surface of the core.

A collet chuck for fixing the pin core is used during molding of the pin core, and when the thickness of the pin core is small, the width is narrow, making it difficult to insert an anti-rotation bar having a function to prevent rotation of the pin core during processing. Since it is impossible, there is a disadvantage in that processing is difficult as the pin core rotates during processing.

In addition, even when the height of the pin core is different from that of the collet chuck jig, it is difficult to fix the pin core.

And, in the case of a conventional collet chuck for fixing a pin core, since one pin core can only be fixed, there is a disadvantage in that it takes a long time to process a plurality of pin cores.

In addition, in the case of a conventional pin core having a height of 300 mm or more, since the processing frequency is not high, it is economically inefficient to manufacture a separate dedicated jig.

Korean Registered Utility Model Publication No. 20-0464732 "Core pin for mold" (registration date: 2013.01.09) Korean Patent Registration No. 10-1623734 "Hairline processing device for core surface of injection mold" (registration date: 2016.05.18)

The present invention was created to solve these problems in view of the above problems, and its purpose is to fix pin cores having different heights and thicknesses using upper and lower chuck jigs stacked in the upper and lower directions, , A mold pin whose structure is improved so that a plurality of pin cores can be individually fixed with individual bolts so that molding processing of a plurality of pin cores can be performed at the same time, and the pin core can be easily fixed by a bolt fastening method. It is to provide a stacking jig structure for fixing.

Another object of the present invention is to disassemble and assemble upper and lower chuck jigs as needed without preparing a dedicated jig for pin core processing work of 300 mm or more, which is relatively less frequent, so that economical compatibility is improved. It is to provide a laminated jig structure for fixing pins.

The present invention for achieving the above object is formed with a plurality of first coupling holes that are open to each other in the front and rear directions on the front and rear sides and spaced apart from each other in the left and right and up and down, and the pin core is inserted in the vertical direction from the top side. The first fixing holes opened to each other on the upper and lower surfaces are formed to be spaced apart from each other on the left and right sides, and a plurality of first fastening holes are formed on the left and right sides so that the fastening bolts are fastened on the front surface, and on the lower side of the plurality of first fastening holes. an upper chuck jig having a plurality of first support holes spaced apart from each other in the up and down directions and into which support bolts are fastened so that ends come into contact with the pin core; The lower side of the upper chuck jig is seated on the top so that the upper chuck jig is stacked by the coupling means, and the front and rear surfaces are opened in front and rear directions, and a plurality of second couplings are spaced apart from each other in the left, right, and up and down directions. A ball is formed, and second fixing holes opened to each other on the upper and lower surfaces are formed to be spaced apart from each other to the left and right so that the pin core is inserted in the vertical direction from the upper side, and a plurality of second fastening holes are left and right to fasten the fastening bolts on the front side. a lower chuck jig formed at a lower side of the plurality of second fastening holes, spaced apart from each other in an up and down direction, and having a plurality of second support holes fastened with support bolts so that ends come into contact with the pin core; Support plate selectively coupled to each of the first and second coupling holes of the upper and lower chuck jigs to be selectively penetrated according to the height of the pin core and selectively supporting the lower portion of the pin core accommodated to be coupled to the first and second fixing holes class; a support block interlocked with the fastening bolts inside the upper and lower chuck jigs and pushing and supporting the pin core supported by the base plate toward the rear surface of the upper and lower chuck jigs when the fastening bolt moves in the rearward direction; and a support bolt that is selectively fastened to the plurality of first and second support holes and pushes and supports the pin core supported by the supporting plate toward the rear side of the upper and lower chuck jig when moving in the rear side direction.

The coupling means includes coupling grooves concavely formed on both left and right sides of the lower surface of the upper chuck jig, support grooves formed concavely on the lower left and right sides of the upper chuck jig, and left and right upper surfaces of the lower chuck jig. One end is coupled to the upper side of the coupling protrusion and the other end is bent by the coupling protrusion formed on both sides of the right side so as to protrude to correspond to the coupling groove and having an assembly hole having a female thread, and an assembly bolt fastened to the assembly hole. It is composed of a clamping block coupled to fit into the support groove.

The coupling groove and the coupling protrusion are formed in a trapezoidal cross-section structure corresponding to each other.

The coupling means includes coupling grooves concavely formed on both left and right sides of the lower surface of the upper chuck jig, protruding to correspond to the coupling grooves on both left and right sides of the upper side of the lower chuck jig, and plural on the upper side surface. A coupling protrusion from which an assembly pin protrudes, a connecting hole into which the assembly pin is inserted on both left and right sides of the lower surface of the upper chuck jig where the coupling groove is formed, and a male screw thread formed on the outer circumferential surface of the upper end of the assembly pin. It consists of a screw part, and a nut member fastened to the screw part of the assembly pin.

The coupling means further includes magnets of different polarities provided at areas where the coupling protrusions and coupling grooves come into contact with each other.

A guide rail is provided inside the first fixing hole of the upper chuck jig to guide sliding movement of the support block in forward and backward directions.

The support bolt has an end rounded in a spherical shape.

The pin core is formed in the form of a pin having a circular cross-section at an upper portion, and a head portion having a rotation preventing surface is formed at a lower portion of the circumference.

The support block is formed in the shape of a hexahedron and has a “v”-shaped notch groove formed on one side of the support block that comes into contact with the pin core when moving backward to the rear side of the upper chuck jig.

The present invention uses a stacked structure of upper and lower chuck jigs to selectively adjust the combined height of the support plate according to the height of the pin core and adjust the support height of the pin core to prevent the pin core from moving downward, In addition, since the upper and lower sides of the pin core can be pressurized and supported by the support block and the support bolt, the pin core can be firmly fixed, so that the pin core can be easily fixed by bolt fastening regardless of height and thickness, and multiple It has the useful advantage of being able to fix the pin core of the machine to be molded at the same time.

In addition, the present invention has the advantage of easily preventing rotation of the pin core because a notch groove is formed on one side of the support block in contact with the pin core, and the end of the support bolt contacts the rotation preventing surface of the pin core. .

In addition, since guide rails for guiding the sliding movement of the support block are provided inside the left and right sides of the first fixing hole, the present invention has the advantage of being able to accurately guide the pin core to a predetermined position during the sliding movement of the support block.

The present invention has an advantage in that economical compatibility is improved because the upper and lower chuck jigs can be disassembled and assembled and used selectively as needed without preparing a dedicated jig for a pin core processing operation of 300 mm or more, which has a relatively low work frequency.

1 is an exploded perspective view showing a laminated jig structure for fixing a mold pin according to the present invention.
Figure 2 is a coupling state diagram of Figure 1;
3 is a rear perspective view of the upper chuck jig of the present invention;
4 is a perspective view of a lower chuck jig of the present invention;
Figure 5 is a perspective view showing a coupled state of an embodiment of the coupling means of the present invention
Figure 6 is a cross-sectional view of Figure 5;
7 is a cross-sectional view showing a coupled state of the upper and lower chuck jig according to the present invention;
8 is a use state diagram showing the processing operation of the pin core using the laminated jig structure for fixing the mold pin of the present invention.
Figure 9 is an exploded perspective view showing another embodiment of the coupling means of the present invention.
Figure 10 is a cross-sectional view showing a coupled state of the coupling means of the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to a user's intention or custom. Therefore, the definition should be made based on the contents throughout this specification. In addition, 'including' a certain component means that other components may be further included, rather than excluding other components unless otherwise stated.

Referring to FIGS. 1 to 8, the laminated jig structure for fixing mold pins according to the present invention is opened to each other in the front and rear directions and a plurality of first couplings spaced apart from each other in the left and right and up and down directions. The ball 110 is formed, and the first fixing hole 105 opened to each other on the upper and lower surfaces is formed to be spaced apart from each other to the left and right so that the pin core 10 is inserted in the vertical direction from the upper side, and the fastening bolt ( 400), a plurality of first fastening holes 120 are formed on the left and right sides, spaced apart from each other in the upper and lower directions on the lower side of the plurality of first fastening holes 120, and ends of the pin core 10 an upper chuck jig 100 having a plurality of first support holes 130 to which the support bolts 500 are fastened so as to be in contact therewith; The lower side of the upper chuck jig 100 is seated on the top so that the upper chuck jig 100 is stacked by the coupling means 600, and the front and rear surfaces are open to each other in the front and rear directions, left, right and up, A plurality of second coupling holes 110A spaced apart from each other are formed, and the second fixing holes 105A opened to each other on the upper and lower surfaces are spaced apart from each other to the left and right so that the pin core 10 is inserted in the vertical direction from the upper side. A plurality of second fastening holes 120A are formed on the left and right sides so that the fastening bolt 400 is fastened on the front surface, and are spaced apart from each other in the upper and lower directions on the lower side of the plurality of second fastening holes 120A. a lower chuck jig 100A having a plurality of second support holes 130A fastened to the support bolt 500 such that an end thereof contacts the pin core 10; Depending on the height of the pin core 10, the first and second coupling holes 110 and 110A of the upper and lower chuck jigs 100 and 100A are coupled to be selectively penetrated, and the first and second fixing holes 105 and 105A ) Support plate 200 for selectively supporting the lower portion of the pin core 10 accommodated to be coupled to; The upper and lower chuck jigs 100 and 100A interlock with the fastening bolt 400 and move the pin core 10 supported on the base plate 200 when the fastening bolt 400 moves in the rearward direction, a support block 300 supported by pushing toward the rear side of the lower chuck jig 100 or 100A; And the pin core 10, which is selectively fastened to the plurality of first and second support holes 130 and 130A and supported by the support plate 200 when moving in the rear side direction, toward the rear side of the upper and lower chuck jigs 100 and 100A A support bolt 500 for pushing and supporting;

Referring to FIGS. 1 and 2 , the pin core 10 has a structure in which an upper portion is formed in the form of a pin having a circular cross section and a head portion 12 having a rotation preventing surface 15 is formed at a lower portion of the circumference. .

The upper chuck jig 100 is formed in the shape of a hexahedral block, and has a plurality of rows and columns so that the plurality of first coupling holes 110 are spaced apart from each other vertically and horizontally.

The lower chuck jig 100A is formed in the shape of a hexahedral block, and a support plate 101 in the form of a square plate is seated on the upper side of a work table (not shown) on the lower surface to support the lower chuck jig 100A with bolts. It has a structure that is combined with

Although not shown in the drawing, the support plate 101 has a structure in which grooves for removing cutting oil and cutting chips are formed on a lower surface.

Also, the lower chuck jig 100A preferably has a larger width than the upper chuck jig 100 for a sense of stability during stacking.

As the upper and lower chuck jigs 100 and 100A are stacked, it has an advantage of being applicable to processing operations of pin cores having different lengths.

As shown in FIGS. 1, 2 and 5, the coupling means 600 includes coupling grooves 610 concavely formed on both left and right sides of the lower surface of the upper chuck jig 100, and the upper chuck. Support grooves 620 concavely formed on the lower left and right sides of the jig 100, and formed to protrude to correspond to the coupling grooves 610 on both left and right upper surfaces of the lower chuck jig 100A, and arm One end is coupled to the upper side of the coupling protrusion 630 by a coupling protrusion 630 in which an assembly hole 632 having a screw thread is formed, and an assembly bolt 645 fastened to the assembly hole 632, and the other end is formed bent, It is composed of a clamping block 640 coupled to fit into the support groove 620.

As shown in FIGS. 1 and 3 , the coupling groove 610 is concavely formed in a trapezoidal shape on both left and right sides of the lower surface of the upper chuck jig 100, and the coupling protrusion 630 is It has a structure protruding in a trapezoidal shape corresponding to the groove 610.

The support groove 620 is formed in a “c” shape at the bottom of the left and right sides of the upper chuck jig 100, and as the other end of the clamping block 640 enters, the top of the upper chuck jig 100 direction deviation is prevented.

The clamping block 640 is formed in a "L" shape in which one end and the other end are bent.

As shown in FIGS. 2 and 5 , the assembly bolt 645 is coupled to pass through the clamping block 640, and then the lower end is screwed into the assembly hole 632 of the coupling protrusion 630 to form the clamping block 645. It performs the function of fixing 640 to the coupling protrusion 630.

On the other hand, the coupling means 600 may be provided with a magnet 670 having a different polarity at the portion of the coupling protrusion 630 and the coupling groove 610 facing each other, in this case, the magnet 670 It has the advantage of being able to maintain the coupling force between the upper chuck jig 100 and the lower chuck jig 100A by attraction.

In addition, in another embodiment of the coupling means 600 of the present invention, as shown in FIGS. 9 and 10, the coupling means 600 is formed concavely on both left and right sides of the lower surface of the upper chuck jig 100. The coupling groove 610 formed to protrude to correspond to the coupling groove 610 on both left and right sides of the upper side of the lower chuck jig 100A, and a plurality of assembly pins 635 protruding from the upper side. Connecting holes 650 into which the assembling pins 635 are inserted at both left and right sides of the lower surface of the upper chuck jig 100 in which the protrusion 630 and the coupling groove 610 are formed, respectively, and the assembling pins ( 635) formed on the outer circumferential surface of the upper end portion 637 in the form of a male thread, and a nut member 660 fastened to the threaded portion 637 of the assembly pin 635.

The assembling pin 635 protrudes from the upper surface of the coupling protrusion 630 in a long pin shape in a vertical direction, and has a hemispherical upper end to facilitate entry through the connecting hole 650, and is formed on the outer circumferential surface of the upper end. It has a structure in which a threaded portion 637 is formed.

The connection hole 650 is formed to communicate in the upper and lower directions with the support groove 620 concavely formed at the bottom of the left and right side surfaces of the upper chuck jig 100, and The nut member 660 has a structure fastened to the threaded portion 637.

In addition, the connecting hole 650 has a lower inner diameter width larger than an upper inner diameter width so that the assembling pin 635 can be easily penetrated.

Accordingly, in another embodiment of the coupling means 600 of the present invention, the assembly pin 635 protrudes from the upper side of the coupling protrusion 630 while the upper chuck jig 100 is seated on the upper side of the lower chuck jig 100A. by passing through the connecting hole 650 of the upper chuck jig 100, and by screwing the nut member 660 to the upper end of the assembly pin 635 protruding upward through the connecting hole 650, The upper chuck jig 100 stacked on the upper side of the chuck jig 100A may be firmly fixed.

As shown in FIGS. 1 and 3 , the support plate 200 is formed in a plate shape with a rectangular cross section and is coupled to pass through the first coupling hole 110 having a rectangular cross section.

Accordingly, the supporting plate 200 is suitable according to the height of the pin core 10 so that the lower part of the pin core 10 accommodated in the upper chuck jig 100 and the lower chuck jig 100A is seated and supported. It is selectively coupled to the first coupling hole 110 or the second coupling hole 110A formed at a height.

The support block 300 is provided to be slidably movable in forward and backward directions within the first fixing hole 105 and the second fixing hole 105A, and the first fastening hole 120 and the second fastening hole When the fastening bolt 400 fastened to (120A) is moved, it has a structure that moves toward the rear side of the upper chuck jig 100 and the lower chuck jig 100A.

In addition, as shown in FIGS. 1 and 4 , the support block 300 is formed in the shape of a hexahedron and moves backward to the rear side of the upper chuck jig 100 and the lower chuck jig 100A, the pin core 10 ) has a structure in which a "v"-shaped notch groove 310 is formed on one side in contact with, and concave guide grooves 320 corresponding to the guide rail 150 are formed on both left and right outer surfaces.

The notch groove 310 has a function of firmly supporting the pin core 10 to prevent shaking and rotation of the pin core 10 during molding of the pin core 10 .

The first fastening hole 120 is formed to be spaced apart from each other on the left and right sides on the front surface of the upper chuck jig 100 so as to communicate with the first fixing hole 105, and is formed on the inner circumferential surface to be screwed with the fastening bolt 400. It has a structure in which a female thread is formed.

In addition, the second fastening hole 120A of the lower chuck jig 100A is formed to be spaced apart from each other in left and right directions on the front surface of the lower chuck jig 100A so as to communicate with the second fixing hole 105A, and the fastening bolt ( 400) has a structure in which a female thread is formed on the inner circumferential surface so as to be screwed.

The fastening bolt 400 has a structure in which a male thread is formed on the outer circumferential surface, and the end is screwed to interlock with the support block 300 to move, or simply push the support block 300 toward the pin core 10 side. have

The first support hole 130 is formed vertically and spaced apart from each other below the first fastening hole 120, and the second support hole 130A is formed on the lower side of the second fastening hole 120A. , It is formed to be spaced apart from each other, and has a structure in which female threads are formed so as to be screwed with the support bolt 500 on the inner circumferential surface of the first and second support holes 130 and 130A.

The support bolt 500 is selectively screwed into the first and second support holes 130 and 130A corresponding to the height of the pin core 10 among the plurality of first and second support holes 130 and 130A, and the pin One end contacting the outer circumference of the core 10 has a structure formed round in a spherical shape.

In addition, one end of the support bolt 500 is preferably nitrided to prevent rotation of the pin core 10 upon contact with the pin core 10 to prevent rotation of the pin core 10 .

As shown in FIGS. 1 and 4, the upper and lower chuck jigs 100 and 100A guide the sliding movement of the support block 300 in the forward and backward directions inside the first and second fixing holes 105 and 105A. Guide rails 150 are provided, respectively.

The guide rail 150 is disposed on the left and right inner surfaces of the first and second fixing holes 105 and 105A so that the left and right sides of the support block 300 are supported to prevent the sliding movement of the support block 300. It will serve as a guide.

The upper and lower chuck jigs 100 and 100A and the support plate 200 are preferably made of metal in consideration of strength.

The pin core 10 has a structure in which an upper portion is formed in the form of a pin having a circular cross section and a head portion 12 having a rotation preventing surface 15 is formed on a portion of the circumference at the lower portion.

When one end of the support bolt 500 comes into contact with the pin core 10, it contacts the anti-rotation surface to prevent rotation of the pin core 10 during molding of the upper end of the pin core 10.

Reference numeral "20" in FIG. 8 denotes a processing machine 20 that processes the upper end of the pin core 10 fixed to the upper and lower chuck jigs 100 and 100A, and "25" indicates the processing machine 20. It shows the processing tip 25.

In the present invention having such a configuration, each pin core 10 having a different height and thickness is fixed to the upper and lower chuck jigs 100 and 100A to be molded one by one, or a plurality of pin cores 10 are molded at the same time. To do so, it can be fixed to the upper and lower chuck jigs 100 and 100A.

In addition, when processing the pin core 10 having a relatively short height, the support plate 200 supporting the lower part of the pin core 10 is coupled to the first coupling hole 110 of the upper chuck jig 100 to obtain an upper chuck The support work of the pin core 10 is performed within the jig 100, and on the contrary, when processing the relatively long pin core 10, the second coupling hole 110A of the lower chuck jig 100A By combining the support plate 200, the pin core 10 penetrates the first fixing hole 105 of the upper chuck jig 100 and enters the second fixing hole 105A of the lower chuck jig 100A. The lower part of (10) can be supported to be accommodated.

The above-described coupling between the pin core 10 and the upper chuck jig 100 is performed by selecting the pin core 10 from among the plurality of first fixing holes 105 and forming the first fixing hole 105 of the upper chuck jig 100. As shown in FIGS. 2 and 7, the support plate 200 is inserted into the first coupling hole 110 having an appropriate height so that the upper end of the pin core 10 protrudes upward of the upper chuck jig 100. is coupled so that the support plate 200 supports the lower portion of the pin core 10.

At this time, the base plate 200 is coupled to selectively pass through the first coupling hole 110 formed on the front or rear surface of the upper chuck jig 100 .

The above-described coupling between the pin core 10 and the lower chuck jig 100A is performed after the upper end of the pin core is located above the first fixing hole 105 of the upper chuck jig 100 for processing, After the lower end of the core 10 enters the second fixing hole 105A of the lower chuck jig 100A, the pin core on the upper side of the base plate 200 coupled to the second coupling hole 110A The lower part of (10) is supported.

Subsequently, when the fastening bolt 400 is coupled to the first fastening hole 120 at the position where the pin core 10 entered and rotated in one direction, as shown in FIGS. 2 and 7, the fastening bolt 400 ) is moved to the rear side of the upper chuck jig 100, the support block 300 coupled to the end of the fastening bolt 400 and supported by the guide rail 150 moves along the guide rail 150 to the upper chuck jig. It slides in the rear side direction of (100).

In addition, when the fastening bolt 400 is coupled to the second fastening hole 120A at the position where the pin core 10 entered and rotated in one direction, the fastening bolt 400 moves to the rear surface of the lower chuck jig 100A. While being moved, the support block 300 slides along the guide rail toward the rear side of the lower chuck jig 100A.

The sliding support block 300 pushes the pin core 10 to the rear side while moving to the rear side to fix the pin core 10 in the first and second fixing holes 105 and 105A.

As shown in FIGS. 5 and 6, in an embodiment of the coupling means of the present invention, the lower part of the upper chuck jig 100 is seated on the upper part of the lower chuck jig 100A to firmly maintain the stacked state. After the coupling groove 610 is seated on the upper side of the protrusion 630, the lower end of one end of the clamping block 640 is seated on the upper side of the coupling protrusion 630, and the other end of the clamping block 640 is the support groove. 620 is inserted into the upper chuck jig 100 to be coupled to prevent upward departure, and the clamping block 640 is fixed to the coupling protrusion 630 of the lower chuck jig 100A by the assembly bolt 645 are combined

Accordingly, in an embodiment of the coupling means of the present invention, the coupling of the upper and lower chuck jigs 100 and 100A is performed by interference between the clamping block 640 and the support groove 620, and the coupling state of the upper and lower chuck jigs 100 and 100A It has the advantage of being able to firmly clamp and support the pin core 10 during the machining operation of the pin core 10 by maintaining it firmly.

In addition, in another embodiment of the coupling means of the present invention, as shown in FIGS. 9 and 10, the upper side of the coupling protrusion 630 while the upper chuck jig 100 is seated on the upper side of the lower chuck jig 100A. The assembly pin 635 protruding from the upper chuck jig 100 is coupled by passing through the connection hole 650 of the upper chuck jig 100, and a nut member ( 660) is screwed to firmly fix the upper chuck jig 100 stacked on the upper side of the lower chuck jig 100A, thereby firmly clamping and supporting the pin core 10 during processing of the pin core 10. have the advantage of being able to

In addition, as shown in FIG. 7, the support bolt 500 is rotated in one direction at the lower side of the fastening bolt 400 while being screwed into the first support hole 130 or the second support hole 130A. By bringing the end of the support bolt 500 into contact with the anti-rotation surface of the pin core 10, the fastening bolt 400 restricts the movement of the pin core 10 and prevents the pin core 10 from rotating. Thus, it is possible to prevent the pin core 10 from fluctuating during molding.

That is, the present invention slides the support block 300 backward in a state where the lower part of the pin core 10 is accommodated in the first fixing hole 105 or the second fixing hole 105A, and moves the pin to the support block 300. In addition to pressing and supporting the core 10, the support bolt 500 is brought into contact with the anti-rotation surface 15 of the head unit 10 to prevent rotation while the pin core 10 is supported in the vertical direction. do.

Therefore, according to the present invention, the base plate 200 is formed according to the height of the pin core 10 for the processing operation of the pin core 10 using the upper chuck jig 100 and the lower chuck jig 100A stacked vertically. Adjusting the coupling height and adjusting the support height of the pin core 10 to prevent downward departure of the pin core 10, and the pin core 10 by the support block 300 and the support bolt 500 Since the pin core 10 can be firmly fixed by pressing and supporting the upper and lower sides of the ), not only can the pin core 10 be easily fixed by a bolt fastening method regardless of height and thickness, but also a plurality of pin cores. (10) has the useful advantage of being able to be fixed for molding at the same time.

In addition, since the present invention can firmly fix the upper chuck jig 100 to be stacked on the upper side of the lower chuck jig 100A by using the coupling means 600, the upper chuck during processing of the upper end of the pin core It has an advantage of improving the processing precision of the pin core 10 by suppressing the flow of the jig 100 .

And, in the present invention, a notch groove 310 is formed on one side of the support block 300 in contact with the pin core 10, and the end of the support bolt 500 is the anti-rotation surface 15 of the pin core 10 ), so it has the advantage of being able to easily prevent rotation of the pin core 10.

In the present invention, since the guide rails 150 for guiding the sliding movement of the support block 300 are provided on the inside of the left and right sides of the first and second fixing holes 105 and 105A, respectively, the pin during the sliding movement of the support block 300 It has the advantage of being able to guide the core 10 to accurately move to a predetermined position.

According to the present invention, the upper and lower chuck jigs (100, 100A) can be disassembled and assembled and used selectively as needed without preparing a dedicated jig for pin core processing work of 300 mm or more, which has a relatively low work frequency, thereby improving economic compatibility. have an advantage

That is, according to the present invention, since the upper chuck jig can be used independently or the upper and lower chuck jig can be used in a stacked manner according to the height of the pin core, the work convenience and compatibility range can be increased during the pin core processing operation. have

In this way, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described above and should not be limited, but should be defined by not only the claims to be described later, but also those equivalent to these claims.

That is, the present invention described as above is not limited to the specific preferred embodiments described above, and anyone having ordinary knowledge in the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims Of course, various modifications are possible, and such changes are within the scope of the claims.

10: pin core 12: head part
15: anti-rotation surface 100: upper chuck jig
100A: lower chuck jig 105: first fixing hole
105A: second fixed hole 110: first coupling hole
110A: second coupling hole 120: first fastening hole
120A: second fastening hole 130: first support hole
130A: second support hole 150: guide rail
200: support plate 300: support block
310: notch groove 320: guide groove
400: fastening bolt 500: support bolt
600: coupling means 610: coupling groove
620: support groove 630: coupling protrusion
632: assembly worker 635: assembly pin
637: screw part 640: clamping block
645: assembly bolt 650: connector
660: nut member 670: magnet

Claims (9)

A plurality of first coupling holes 110 are formed on the front and rear surfaces in the front and rear directions and spaced apart from each other in the left and right and up and down directions, and the pin core 10 is inserted in the vertical direction from the upper side. The first fixing holes 105 opened to each other on the lower surface are formed to be spaced apart from each other on the left and right sides, and a plurality of first fastening holes 120 are formed on the left and right sides so that the fastening bolts 400 are fastened on the front surface. A plurality of first support holes 130 are formed on the lower side of the first fastening hole 120 of which are spaced apart from each other in the up and down directions and to which the support bolt 500 is fastened so that the ends come into contact with the pin core 10. an upper chuck jig 100;
The lower side of the upper chuck jig 100 is seated on the top so that the upper chuck jig 100 is stacked by the coupling means 600, and the front and rear surfaces are open to each other in the front and rear directions, left, right and up, A plurality of second coupling holes 110A spaced apart from each other are formed, and the second fixing holes 105A opened to each other on the upper and lower surfaces are spaced apart from each other to the left and right so that the pin core 10 is inserted in the vertical direction from the upper side. The plurality of second fastening holes 120A are formed on the left and right sides so that the fastening bolts 400 are fastened on the front surface, and are spaced apart from each other in the upper and lower directions on the lower side of the plurality of second fastening holes 120A. a lower chuck jig 100A having a plurality of second support holes 130A fastened to which the support bolt 500 is fastened such that an end thereof contacts the pin core 10;
Depending on the height of the pin core 10, the first and second coupling holes 110 and 110A of the upper and lower chuck jigs 100 and 100A are coupled to be selectively penetrated, and the first and second fixing holes 105 and 105A ) Support plate 200 for selectively supporting the lower portion of the pin core 10 accommodated to be coupled to;
The upper and lower chuck jigs 100 and 100A interlock with the fastening bolt 400 and move the pin core 10 supported on the base plate 200 when the fastening bolt 400 moves in the rearward direction, a support block 300 supported by pushing toward the rear side of the lower chuck jig 100 or 100A; and
By pushing the pin core 10, which is selectively fastened to the plurality of first and second support holes 130 and 130A and supported by the support plate 200 when moving in the rear side direction, to the rear side of the upper and lower chuck jigs 100 and 100A Support bolts 500 for supporting; laminated jig structure for fixing mold pins, characterized in that provided. The method of claim 1,
The coupling means 600 includes coupling grooves 610 concavely formed on both left and right sides of the lower surface of the upper chuck jig,
Support grooves 620 concavely formed on the lower left and right sides of the upper chuck jig 100;
Coupling protrusions 630 formed to protrude to correspond to the coupling grooves 610 on both left and right sides of the upper surface of the lower chuck jig 100A and having assembling holes 632 having female threads formed therein, and
One end is coupled to the upper side of the coupling protrusion 630 by the assembly bolt 645 fastened to the assembly hole 632 and the other end is bent to form a clamping block 640 coupled to fit into the support groove 620. A laminated jig structure for fixing a mold pin, characterized in that configured. The method of claim 2,
The coupling groove 610 and the coupling protrusion 630 are laminated jig structures for fixing mold pins, characterized in that formed in a trapezoidal cross-section structure corresponding to each other. The method of claim 1,
The coupling means 600 includes coupling grooves 610 concavely formed on both left and right sides of the lower surface of the upper chuck jig 100,
Coupling protrusions 630 formed to protrude to correspond to the coupling grooves 610 on both left and right sides of the upper side of the lower chuck jig 100A and having a plurality of assembly pins 635 protruding on the upper side,
Connection holes 650 into which the assembling pins 635 are inserted at both left and right sides of the lower surface of the upper chuck jig 100 where the coupling grooves 610 are formed, respectively;
A screw portion 637 in the form of a male screw thread formed on the outer circumferential surface of the upper end of the assembly pin 635, and
A laminated jig structure for fixing a mold pin, characterized in that made of a nut member 660 fastened to the threaded portion 637 of the assembly pin 635. The method of claim 2,
The coupling means 600 is a laminated jig structure for fixing a mold pin, characterized in that it further includes a magnet 670 of different polarity provided at the contact portion of the coupling protrusion 630 and the coupling groove 610. The method of claim 1,
A mold pin further comprising a guide rail 150 provided to guide sliding movement of the support block 300 in the forward and backward directions inside the first fixing hole 105 of the upper chuck jig 100 Stacked jig structure for fixation. The method of claim 1,
The support bolt 500 is a stacking jig structure for fixing a mold pin, characterized in that the end is formed to be rounded in a spherical shape. The method of claim 1,
The pin core 10 is formed in the form of a pin with a circular cross section at the top, and a head portion 12 having a rotation preventing surface 15 is formed on a part of the circumference at the bottom. The method of claim 1,
The support block 300 is formed in the shape of a hexahedron, and when moved backward to the rear side of the upper chuck jig 100, a notch groove 310 in the shape of "v" is formed on one side that contacts the pin core 10. A laminated jig structure for fixing a mold pin, characterized in that formed.

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