KR101202394B1 - Core surface Adjusting Apparatus for Injection Mold - Google Patents

Abstract

PURPOSE: A correction apparatus for the joint portion of cores is provided to improve correction efficiency by correcting the joint portion of cores after the angle of a core support unit is adjusted. CONSTITUTION: A correction apparatus for the joint portion of cores comprises a core support unit(1), first and second core fixing units(31,33), and an end fixing unit(35). The core support unit comprises bottom and side support planes(11,13), and a grinding hole(19). First and second cores are coupled at a predetermined joint angle to form the outer surface or inner surface of a molded article and are placed on the bottom support planes. The side support planes support the side surfaces of the first and second cores to maintain the joint angle of the first and second cores. The grinding hole is located under the joint portions of the first and second cores. The first and second core fixing units and the end fixing units are formed in the core support unit. The first and second core fixing units fix one end of the first and second cores. The end fixing unit simultaneously fixes the joint portions of the first and second cores.

Description

Core Surface Adjusting Apparatus for Injection Mold}

The present invention relates to a device for calibrating the joint of the core provided in the mold apparatus The present invention relates to a device for correcting the gap when the joint formed between one core and another core coupled to a predetermined joining angle is shifted .

Injection molding is a processing method that injects melted plastic material through heating into a mold apparatus and solidifies or hardens it to make a molded product.It is one of the important molding methods of thermoplastic resin together with extrusion molding. It is a processing method widely used in production.

The mold apparatus includes a fixed side mold connected to a cylinder and a movable side mold detachable to the fixed side mold, and is formed between the fixed side mold and the movable side mold in the shape of a product to be molded, and thus is a molding space into which a molding material is injected. There is a cavity.

The molding material supplied to the mold apparatus is cured after filling the cavity, and when the molding material is cured, the movable mold moves to one side so that the worker can take out the cured molding material (product) from the mold apparatus.

On the other hand, the structure of the core forming the cavity among the structure of the mold apparatus varies depending on the shape of the product, in the case of the product having an undercut (under cut) generally includes a slide core to form a part of the cavity.

The undercut in the mold field is a part that cannot be separated from the mold apparatus by only separating the movable mold, such as a hole penetrating the outer circumferential surface of the product, a groove provided by being bent on the outer circumferential surface of the product, and a protrusion formed by protruding from the outer circumferential surface of the product. The slide core refers to a part that moves away from the cavity when the movable mold is separated from the fixed mold and moves in the cavity direction when the movable mold is coupled to the fixed mold to form a part of the cavity.

1 illustrates a mobile phone case which is an example of an injection molded product A manufactured through injection molding.

Since a mobile phone has various function keys such as a volume button to be exposed to the outside, a hole B for connecting the function keys to a substrate located inside the mobile phone case is required on the outer circumference of the mobile phone case.

As described above, the hole provided to penetrate the outer circumferential surface of the injection molding becomes the above-described undercut, and the slide core must be provided in the mold apparatus for molding the injection molding provided with the undercut.

Figure 2 (a) is a schematic diagram of a mold apparatus provided with a slide core, the mold apparatus is a fixed side core 85 and the movable side core 91, which forms the cavity (F), a fixed side template (to which the fixed side core is fixed) 83), a movable side template 93 to which the movable side core is fixed, and a slide core 95 that forms a cavity and moves away from the cavity when the movable side core is separated from the fixed side core.

The fixed side template 83 is fixed to the fixed side attachment plate 81 and the cavity F is provided with a sprue bush (not shown), a runner (not shown), and penetrating the fixed side attachment plate 81. The molding material is supplied through the gate (not shown).

In this case, the stationary side mold means the stationary side attachment plate, the stationary side template, and the stationary side core, and the movable side mold means the movable side core and the movable side template.

The movable side template 93 is moved away from the fixed side template 83 by a power transmission means (not shown) provided outside, and in this process, the movable side core 91 fixed to the movable side template is It is separated from the fixed side core 85.

On the other hand, the slide core 95 is an undercut forming portion (953) to form a part of the pinhole (951), the cavity (F) through which the angular pin (87) fixed to the fixed side template (83) penetrates the undercut It includes.

Therefore, when the movable side core 91 moves to one side (lower direction on the drawing) and is separated from the fixed side core 85, the slide core 95 moves in a direction away from the cavity along the inclination of the angular pin 87. Therefore, the injection molded article located in the movable side core 91 can be taken out.

The number of slide cores provided in the mold apparatus is determined by the position or the number of undercuts present in the injection molding. FIG. 2 (b) shows a case in which the undercuts exist on four sides of the injection molding.

That is, if there are undercuts on the four surfaces of the injection molding, the slide core 95 is coupled (joining part D) at a predetermined joining angle (the same angle as the outer peripheral surface of the injection molding) along the circumference of the movable side core 91. Formed) to form the cavity F.

However, when the joint part D, which is a joining surface between one slide core and the other slide core, is misaligned (J) or the joint part D is open, the outer circumferential surface of the injection molding is not smooth as shown in FIG. 1. (E) will cause product defects.

Therefore, before assembling the slide core to the mold apparatus, it is necessary to check the joint of the slide core by checking whether the joint D of the one slide core and the adjacent slide core is shifted or there is a gap in the joint D. there was.

However, according to the prior art, not only an apparatus for calibrating a joint formed between one slide core and another slide core, but also an apparatus for checking whether a joint is required is not developed.

Since the above problems are directly related to product defects, it has long been a subject of interest in the technical field of the mold apparatus, but an apparatus for effectively solving the above problems among the prior arts has not been developed.

Accordingly, the inventor of the present application has developed a core joint calibration device that effectively solves the above-described problems after the endeavor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a core joint calibrating apparatus capable of ascertaining whether a joint of a core which is assembled to a mold apparatus to form a cavity is required to be calibrated.

In addition, the present invention is to solve the problem to provide a core joint correction device that can easily correct the joint formed between the core and the core.

In addition, the present invention is to solve the problem to provide a core joint calibration device to improve the workability during the core joint calibration work.

In order to solve the above problems, the present invention is provided with a lower prevention surface on which a first core and a second core are coupled to a predetermined bonding angle to form an outer circumferential surface or an inner circumferential surface of an injection molding, and protrude from the lower prevention surface. A side barrier surface supporting the side surface of the first core and the side surface of the second core, the lower core surface is provided on the lower core surface so that the first core and the second core to maintain the bonding angle, but the first core and the second core A core support part provided with a polishing hole located below the joint part of the core, a first core fixing part provided in the core support part to fix one end of the first core seated on the lower prevention surface, and provided in the core support part A second core fixing part for fixing one end of the second core seated on the lower prevention ground, the core support portion is provided to secure the joint of the first core and the second core at the same time It provides a core joint calibration device including both ends fixing.

In this case, the core joint calibrating device of the present invention is provided to push one end of the first core in the second core direction to adjust the position of the first core, and one end of the second core to the first core. The apparatus may further include a two-core position adjusting unit provided to push in one core direction to adjust the position of the second core.

In addition, the core support portion further includes a receiving groove which is bent at the bonding angle on the lower prevention surface, the first core position adjusting portion is provided inside the receiving groove to press the first core bar, A first guide for supporting the first transfer bar such that the first transfer bar is capable of linear reciprocating movement in the receiving groove, and a first contact plate provided in the first transfer bar to contact the first core, A second transfer bar provided inside the receiving groove to pressurize the second core, a second guider supporting the second transfer bar to allow the second transfer bar to linearly reciprocate in the receiving groove; The second transfer bar may be provided to include a second contact plate contacting the first core.

In addition, the core joint calibration device of the present invention includes the fixing portion receiving groove provided on the lower surface of the core support portion, the first core fixing portion penetrates through the first pressing plate, the first pressing plate in contact with the first core; A first fixture is inserted into the fixture receiving groove, one end is fixed to the first pressure plate and the other end is supported on the lower prevention surface includes a first height adjustment opening for adjusting the distance between the first pressure plate and the lower prevention surface The second core fixing part may include a second pressing plate contacting the second core and a second fixing tool inserted into the fixture receiving groove through the second pressing plate, one end of which is fixed to the second pressing plate, and the other end of the lower pressing plate It may be provided to include a second height adjustment opening is supported on the prevention surface to adjust the distance between the second pressure plate and the lower prevention surface.

In this case, the first core fixing part further includes a first slot provided in the first pressing plate so that the first fixing tool penetrates and having a length longer than a diameter of the first fixing tool, and the second core fixing part is formed in the first fixing tool. The second fixture may be provided on the second pressing plate to penetrate, and may further include a second slot having a length longer than the diameter of the second fixture.

Meanwhile, the core support part includes a fixture receiving groove provided on a lower prevention surface, and both end fixing parts respectively include a pressure plate contacting the first core and the second core, and a pressure plate inserted into the fixture receiving groove through the pressure plate. Fixtures, one end is fixed to the pressure plate and the other end may be provided to include a height adjuster for supporting the side prevention surface to adjust the distance between the pressure plate and the lower prevention surface.

In addition, the present invention core joint calibration device further includes a base block detachable to the bottom surface of the workplace, a support connecting shaft coupled to the core support, a support hinge provided with a ball hinge connecting the support connecting shaft and the base block; The ball hinge may be provided to include a ball provided in the support connecting shaft, the ball receiving portion provided in the base block, and the hinge portion for selectively fixing the ball accommodated in the ball receiving portion.

The present invention has been invented to solve the above-described problems, and can provide an effect of providing a core joint calibrating apparatus capable of ascertaining whether a joint of a core which is assembled to a mold apparatus to form a cavity is required to be calibrated.

In addition, the present invention can achieve the effect of providing a core joint correction device that can easily correct the joint formed between the core and the core.

In addition, the present invention can achieve the effect of providing a core joint straightening device for improving the workability during core joint straightening operation.

1 illustrates an example of an injection molding.
FIG. 2 illustrates an example of a mold apparatus for manufacturing the injection molding of FIG. 1.
3 and 4 is a perspective view of the core joint calibration device of the present invention.
Figure 5 is a perspective view of both ends of the fixing unit and the position adjusting unit provided in the present invention core joint correction device.
6 and 7 illustrate a core joint calibration apparatus provided with a support base.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

On the other hand, the configuration or control method of the device to be described below is not intended to limit the scope of the present invention, but to describe the embodiment of the present invention, the same reference numerals are used throughout the specification the same components Indicates.

As shown in FIG. 3 and FIG. 4, the core joint calibrating apparatus 100 of the present invention includes a core support 1 for supporting the first core C1 and the second core C2 to maintain a predetermined joint angle H. As shown in FIG. ), A fixing part 3 for fixing the core seated on the core support part, and position adjusting parts 51 and 53 for adjusting the position of the core fixed to the core support part.

The first core C1 and the second core C2 are combined at a predetermined bonding angle H in the mold apparatus to form an outer circumferential surface or an inner circumferential surface of the injection molding, and the first core C1 and the second core C C2) may be a slide core provided in the mold apparatus, or may be a core provided in the mold apparatus in addition to the slide core.

The core support part 1 is provided with a lower prevention ground 11 on which the first core C1 and the second core C2 are seated, and protrudes from the lower prevention ground, but includes a first core C1 and a second core. The side prevention surface 13 which supports the side surface of each core so that (C2) may maintain the said bonding angle (H).

As shown in FIG. 3, the lower prevention surface 11 has a predetermined width so that the first core C1 and the second core C2 can move, but at the same angle G as the bonding angle H. It may be provided in a bent form, or may be provided in a wide plate shape that simply supports the first core and the second core.

On the other hand, it is preferable that the lower prevention surface 11 is further provided with a polishing hole 19 located in the lower portion of the junction (joint) of the first core (C1) and the second core (C2).

This is because when the joint D of the first core and the second core fixed to the core support 1 is displaced (see J, FIG. 2 (b)), a corrective operation is performed when the displaced portion is polished by using a cutting tool. There is an effect to facilitate.

The lower stopping surface 11 includes a plurality of fastener receiving grooves 15 spaced apart from each other at a predetermined interval, and the fastener receiving groove 15 is preferably provided to be parallel to the side preventing ground 13. .

That is, no matter what the shape of the lower barrier surface, the side barrier surface 13 will be bent at the same angle (G) as the bonding angle (H), so if you draw a virtual line connecting the center of the fixture receiving groove (15) It will be a straight line bent at the same angle as the joint angle.

Meanwhile, the fixing part 3 is a first core fixing part 31 for fixing the first core to the core support part 1 as a means for fixing the first core and the second core seated on the core support part 1, A second core fixing part 33 for fixing the second core to the core support part, and both end fixing parts 35 for simultaneously fixing the first core and the second core to maintain the bonding angle (H).

Referring to FIG. 4, the first core fixing part 31 penetrates through the first pressing plate 311 and the first pressing plate which contact the upper surface of the first core seated on one side of the core support 1. The first fixture 313 is inserted into the fixture receiving groove 15 provided in the lower prevention ground, one end is fixed to the first pressing plate and the other end is supported on the lower preventing ground to prevent the first pressing plate 311 and lower It includes a first height adjustment hole 315 for adjusting the distance between the ground (11).

The first pressing plate 311 is provided in a plate shape having a predetermined width, length and thickness, the first projection 319 for pressing the upper surface of the first core (C1) to one end of the first pressing plate (311). Is provided.

Furthermore, the first pressing plate 311 further includes a first slot 317 through which the first fixing tool 313 penetrates, and a first through hole 315 into which one end of the first height adjusting opening 315 is inserted. This is preferred.

The first fixture 313 is provided in the form of a bolt may be inserted into the fixture receiving groove (15). In this case, a washer W may be further provided between the head 3131 of the first fixing tool 313 and the first pressing plate 311.

The first slot 317 is provided to have a predetermined length in the longitudinal direction of the first pressing plate 311, but preferably has a length larger than the diameter of the first fixing sphere (313).

The first slot can change the position of the first pressing plate 311 even when the first fixing tool 313 is inserted into the fixture receiving groove 15 so that the first core C1 can be fixed. It may be useful for changing the position of the pressure plate.

The first height adjustment opening 315 may be provided in the form of a bolt, in which case one end of the first height adjustment opening is inserted into the first through-hole 318 is fixed to the first pressure plate 311, the first height adjustment The head head 3151 of the sphere is supported by the lower stopping surface 11.

Looking at the process of fixing the first core (C1) to the core support (1), the user to the lower prevention ground 11 to maintain the bonding angle (H) of the first core (C1) and the second core (C2) After seating, the first pressing plate 311 is positioned above the first core.

Thereafter, the user adjusts the position of the head 3151 of the first height adjusting opening by rotating the first height adjusting opening 315 such that the lower surface of the first pressing plate 311 is aligned with the upper surface of the first core C1. When the height adjustment of the first pressure plate is completed, the first fixture 313 is fixed to the fixture receiving groove 15.

The user can change the position of the first pressing plate 311 to a position where the first core C1 is easily fixed through the first slot 317, and the washer W is in close contact with the first pressing plate 311. By rotating the first fixture 313 until the first core (C1) can be fixed to the first pressing plate 311.

The second core fixing part 33 includes a second pressing plate 331 contacting the upper surface of the second core seated on the other side of the core supporting part 1, and a lower pressure penetrating surface provided through the second pressing plate. The second fixture 333 is inserted into the fixture receiving groove 15, one end is fixed to the second pressure plate and the other end is supported on the lower prevention ground, the gap between the second pressure plate 331 and the lower prevention ground 11 It includes a second height adjustment 335 to adjust.

The second pressing plate, the second fixing tool and the second height adjusting tool may be provided to have the same structure as the above-described first pressing plate, the first fixing tool and the first height adjusting tool, in this case, the second pressing plate 331 The slot 337, the second through hole 338, and the second protrusion 339 may be provided.

The both ends fixing part 35 is a pressure plate 351 for simultaneously pressing the first core and the second core in a configuration for simultaneously fixing the junction D of the first core C1 and the second core C2, Fixture 353 inserted into the fixture receiving groove 15 provided in the lower prevention surface through the pressure plate, one end is fixed to the pressure plate and the other end is supported on the side prevention surface 13, the pressure plate 351 and the lower It includes a height adjustment 335 for adjusting the interval between the prevention surface (11).

Referring to Figure 5 (a), the pressing plate 351 is provided in a plate shape, one end of the pressing plate is provided with a projection 359 for simultaneously pressing the first core (C1) and the second core (C2). .

In addition, the pressure plate 351 includes a slot 357 through which the fastener 353 passes, and a through hole 358 to which one end of the height adjustment hole 355 is fixed.

The fastener 353 is provided in the form of a bolt and can be inserted into the fastener receiving groove 15. In this case, a washer W is further disposed between the head 3531 of the fastener 353 and the pressing plate 351. It may be provided.

The slot 357 is provided to have a predetermined length along the longitudinal direction of the pressure plate 351, it is preferably provided to have a length greater than the diameter of the fixture (353).

The slot 357 is fixed to the first core (C1) and the second core (C2) because it allows to change the position of the pressure plate 351 even when the fixture 353 is inserted into the fixture receiving groove (15) There is a useful effect when changing the position of the pressure plate for.

Height adjustment port 355 may be provided in the form of a bolt in this case one end of the height adjustment opening is inserted into the through hole 358 is fixed to the pressure plate 351 and the head of the height adjustment device (3551) is the side prevention surface ( 13) is supported.

The user places the pressure plate 351 on the first core and the second core seated on the core support 1, and then the lower surface of the pressure plate 351 through each height adjustment hole 355 is the core (C1, C2) Adjust to be the same height as the upper surface of the, and fixed the position of the pressure plate 351 by fixing the fixture 351 to the fixture receiving groove 15, through this the bonding angle (H) of the first core and the second core Will be fixed. Therefore, it is possible to prevent the joining angle H from being changed when correcting the joint D through the core joint correcting apparatus.

On the other hand, the above-described embodiment has been described based on the case in which the head 3551 of the height adjustment 355 is supported on the side prevention ground 13, not the lower prevention ground 13, but the head 3551 of the height adjustment aperture is the lower prevention ground. It may be provided so that it may be supported by (11).

In the core joint calibrating apparatus 100 having the above-described structure, before assembling the core to the mold apparatus, whether the joint D of the first core and the second core are misaligned, and the gap outside the allowable gap in the joint D is separated. Make sure that it exists.

If the junction D between the first core and the second core is shifted (when a step is formed at the junction between the first core and the second core or when the first core and the second core do not smoothly run, FIG. 2B) J) The user can correct the joint by cutting the misaligned portions while fixing the cores C1 and C2 to the core support 1.

In addition, even when there is a gap outside the allowable size in the joint portion D of the first core and the second core, the joint portion is cut by cutting a part of the core causing the gap while fixing each core to the core support 1. D) can be corrected.

On the other hand, when the joint (D) is corrected through a cutting member such as a file (file), the lower prevention ground 11 on which the joint D is located is provided with a polishing hole 19, so that the lower prevention ground is moved in the line. Since the interference is prevented, the user can easily correct the joint D.

However, in the above-described embodiment, the core joint calibrating apparatus 100 of the present invention will be described based on the case where all of the first core fixing part 31, the second core fixing part 33, and both end fixing parts 33 are provided. However, the above-described effects can be expected only with the core joint correcting apparatus including only the first core fixing part and the second core fixing part.

On the other hand, the core joint calibration device 100 of the present invention is a position adjusting unit for adjusting the position of each of the core (C1, C2) fixed to the core support (1) through the fixing portion 3 as shown in FIG. 51, 53) may be further included.

Although the first core and the second core are fixed to the core support 1 through the first core fixing part 31, the second core fixing part 33, and both end fixing parts 35, the first core and the second core are fixed. According to which position of the core support (1) is fixed to the joint angle can be different or can form a joint (D) shifted from each other.

That is, when any one of the first core and the second core is biased and fixed in the direction in which the other one is located, the joint D may appear to be displaced from each other even though the joint D is normally processed.

The position adjusting parts 51 and 53 are intended to solve this problem, and the first core C1 is provided through the first core fixing part 31, the second core fixing part 33, and both end fixing parts 35. And the second core C2 are fixed to the core support 1, and then the junction D is normally processed while changing the positions of the first core and the second core finely (the inner peripheral surfaces of the first core and the second core are stepped. It is possible to check whether the connection is made without).

Position adjusting unit for implementing the above-described function may be provided in a variety of forms hereinafter the case where the position adjusting unit (51, 53) is provided in the receiving groove 17 is provided bent on the lower prevention surface (11) Explain as.

The position adjusting unit may include a 1 core position adjusting unit 51 for adjusting the position of the first core C1 and a 2 core position adjusting unit 53 for adjusting the position of the second core C2. The position adjusting unit 51 is provided at one end of the core support 1, and the two core position adjusting unit 53 is provided at the other end of the core support 1.

Referring to the structure of the 1 core position adjusting unit 51 with reference to Figure 5 (b) 1 core position adjusting unit 51 is the first transfer located in the receiving groove 17 provided in the core support (1) A first guider 513 provided in the bar 511 and the receiving groove 17 to support the first transfer bar 511 such that the first transfer bar 511 can linearly reciprocate in the accommodation groove 17. ).

One end of the first transfer bar 511 is provided with a handle (5111) for rotating the first transfer bar, the other end of the first transfer bar 511 a first contact plate in contact with the first core (C1) 5113 is provided.

In this case, the user rotates the first transfer bar 511 through the handle 5111 and moves the first transfer bar in the direction in which the first core C1 is positioned by the first guider 513. Since the first contact plate 5113 provided at one end pushes the first core C1, the position of the first core will be adjusted.

The two-core position adjusting unit 53 also includes a second transfer bar 531 and a second guider 533 provided with a handle 5311 and a second contact plate 5313. The same bar configuration as that of the one-core position adjusting unit 51 is omitted.

In the core joint correcting apparatus including the above-described configuration, the user supports the first core and the second core through the first core fixing part 31, the second core fixing part 33, and both end fixing parts 35. After fixing it to the) and using the position adjusting unit (51, 53) to change the position of the first core and the second core to check whether the joint (D) is normally processed.

Of course, the method of fixing each core to the core fixing portion can be modified in various forms other than the above-described order.

That is, the first core and the second core are simply fixed to the core support part 1 through the first core fixing part 31 and the second core fixing part 33, and then the position adjusting parts 51 and 53 of each core are used. It may be proceeded in such a way to check the angle of the joint and finally fix the position of the cores with both ends fixing portion (35).

On the other hand, if the inner circumferential surface of the first core and the inner circumferential surface of the second core are shifted (a step is present) or there is a gap between the first core and the second core at the joint, the user supports the core support 1. The joints D are corrected by cutting the misaligned portions while cutting the cores or by cutting one side of the core causing the gap.

Since the first core and the second core, which have been calibrated, will be assembled in the mold apparatus, product defects due to the failure of the joint D between the cores can be prevented.

Hereinafter, another embodiment of the core joint calibrating apparatus 100 of the present invention will be described with reference to FIGS. 6 and 7.

The present embodiment is characterized in that the support base 7 is further provided with the core support 1 positioned at a predetermined height from the floor surface Y of the workplace, but having an adjustable angle of the core support 1.

The core support part 1, the fixing part 3, and the position fixing parts 51 and 53 except for the support part support 7 are the same as the structure of the embodiment disclosed in FIGS. This embodiment is demonstrated as a reference.

The support base 7 is a base block 71 is fixed to the bottom surface (Y), which is provided with a magnetic material such as metal, the support connecting shaft 73 is coupled to the core support 1, the support connecting shaft It may include a ball hinge 75 for connecting the 73 and the base block 71.

The base block 71 may be provided to be detachable to the bottom surface (Y) by using a magnetic force, in which case the base block 71 is preferably provided as a magnetic material.

In addition, the base block 71 is provided with a magnet accommodating groove 712 provided therein, a block shielding plate which is provided with a non-magnetic material and bisects the base block 71 to communicate with the outer circumferential surface of the magnet accommodating groove 712 ( 711, the block permanent magnet 713 provided to be rotatable inside the magnet accommodating groove 712, and the block permanent magnet 713 by rotating the block permanent magnet 713 based on the block shield plate 711. It may be provided to include a block switch 715 for splitting the pole or the anode (N pole and S pole).

Referring to FIG. 7, a process of attaching and detaching the base block 71 to the bottom surface Y is shown in FIG. 7 (a). The north pole and the south pole of the block permanent magnet 713 are placed on the block shielding plate 711. The base block 71 is fixed to the bottom surface Y provided with a magnetic material such as metal because the lower surface of the base block 71 will be magnetized when rotated to be divided by the metal block.

However, when the state in which the anode of the block permanent magnet is divided by the block shield plate 711 is eliminated by rotating the block switch 715 as shown in FIG. 7B, the magnetized state of the lower surface of the base block 71 is removed. The base block 71 can be separated from the bottom surface (Y).

On the other hand, the ball hinge 75 is provided at one end of the ball receiving portion (753), the support portion connecting shaft 73 fixed to the base block 71, the ball 751 accommodated in the ball receiving portion, the ball receiving portion ( It may include a hinge portion 755 provided to penetrate the 753 to fix the position of the ball (751).

The hinge portion 755 penetrates through the ball receiving portion 753 and has a bolt 7551 having one end contacting the ball 751, and a lever 7553 positioned outside the ball receiving portion 753 to rotate the bolt. It may be provided as.

The bolt 7551 is preferably provided to contact the ball 751 according to the rotation direction of the lever (7553).

That is, the bolt 7551 moves in the direction of the ball 751 when the lever rotates clockwise (or counterclockwise) and moves away from the ball when the lever 7553 rotates counterclockwise (or clockwise). It is preferably provided to move to.

Therefore, the user can adjust the angle formed by the support connecting shaft 73 and the bottom surface (Y) through the hinge portion 755.

When the support connecting shaft 73 is able to adjust the angle formed with the bottom surface (Y), the user can adjust the core support (1) at a comfortable angle to work and then correct the joint (D) in this embodiment According to the core joint calibration device can be expected to improve the workability when the joint calibration.

The present invention may be practiced in various forms and is not limited to the above-described embodiment. That is, if the modified embodiment includes essential components of the claims of the present invention, it should be considered that the present invention belongs to the scope of the present invention.

100: core joint straightening device 1: core support
11: lower ground 13: side ground
15: fixture receiving groove 17: receiving groove
3: fixing part 31: first core fixing part
33: second core fixing portion 35: both ends fixing portion
351: pressure plate 353: fixture
355: Height adjustment 357: slot
358: through hole 359: projection
5: position adjusting unit 51: 1 core position adjusting unit
511: first feed bar 513: first guider
53: 2-core positioning part 7: support base
71: base block 73: support connecting shaft
75: ball hinge

Claims (7)

A lower prevention surface on which a first core and a second core are combined to form a predetermined joint angle to form an outer circumferential surface or an inner circumferential surface of the injection molding, and are provided to protrude from the lower prevention surface. A side prevention surface for supporting the side of the first core and the side of the second core, the lower prevention surface provided in the lower prevention surface to maintain a bonding angle, the polishing hole located in the lower portion of the junction of the first core and the second core It is provided with a core support;
A first core fixing part provided on the core support part to fix one end of the first core seated on the lower prevention ground;
A second core fixing part provided on the core support part to fix one end of the second core seated on the lower prevention ground;
And a two end fixing parts provided on the core support part to simultaneously fix the joint part of the first core and the second core. The method of claim 1,
A one core position adjusting unit provided to push one end of the first core in the second core direction to adjust the position of the first core;
And a two core position adjusting unit provided to push one end of the second core in the direction of the first core to adjust the position of the second core. The method of claim 2,
The core support further includes a receiving groove that is bent at the bonding angle on the lower prevention surface,
The first core position adjusting unit is provided in the accommodation groove to press the first core to press the first core, the first guide bar to support the first transfer bar to enable a linear reciprocating motion in the accommodation groove And a first contact plate provided in the first transfer bar and in contact with the first core.
The second core position adjusting unit is provided in the accommodation groove to press the second transfer bar for pressing the second core, the second guide bar for supporting the second transfer bar to enable a linear reciprocating motion in the accommodation groove And a second contact plate provided in the second transfer bar and in contact with the first core. The method of claim 1,
The core support portion includes a fixture receiving groove provided in the lower prevention surface,
The first core fixing part is a first pressing plate in contact with the first core, a first fixing tool inserted into the fixture receiving groove through the first pressing plate, one end is fixed to the first pressure plate, the other end is the lower prevention surface It is supported on the first height adjustment plate for adjusting the distance between the first pressure plate and the lower prevention surface,
The second core fixing part is a second pressing plate in contact with the second core, a second fixing tool inserted into the fixture receiving groove through the second pressing plate, one end is fixed to the second pressing plate and the other end is the lower prevention surface And a second height adjustment tool which is supported by and adjusts a distance between the second pressure plate and the lower prevention surface. 5. The method of claim 4,
The first core fixing part further includes a first slot provided on the first pressing plate so that the first fixing tool penetrates and having a length longer than that of the first fixing tool.
And the second core fixing part further comprises a second slot provided on the second pressing plate so that the second fixing tool penetrates, and having a length longer than that of the second fixing tool. The method of claim 1,
The core support portion includes a fixture receiving groove provided on the lower prevention ground,
The both ends fixing part is a pressure plate which is in contact with the first core and the second core, respectively, a pressure plate fixture which is inserted into the fixture receiving groove through the pressure plate, one end is fixed to the pressure plate and the other end is supported on the side prevention surface And a height adjuster for adjusting a gap between the pressure plate and the lower prevention surface. The method of claim 1,
And a base block detachably attached to the bottom surface of the workplace, a support connecting shaft coupled to the core support, and a support hinge provided with a ball hinge connecting the supporting connecting shaft and the base block.
The ball hinge is provided with a ball provided in the support connecting shaft, the core block is provided on the base block, the ball receiving portion for receiving the ball, the hinge portion for selectively fixing the ball accommodated in the ball receiving portion Calibration device.

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