KR20040084341A - A plastic structure of pores of metallic mold for P ·P toothbrush - Google Patents

Abstract

PURPOSE: A molding structure of bristle pin hole is provided to make the accurate forming work of a bristle pin hole, and thus the improvement of its production and quality, possible, by preventing the shape of the bristle pin hole from being distorted. CONSTITUTION: The molding structure of bristle pin hole includes; a rotary core(8), fixed on the top end of a rotation axis(19) and mounted on the concave part in the central top end of a operating section plate(30); a push rod(13), arranged in the second material injecting side of the operating section plate(30) so as to be operated by a cylinder(16), and connected with a push plate(31); a bristle pin block(17), assembled with a bristle pin(18) inside the first material injecting side of the rotary core(8); and a cylinder rod(26) of a cylinder(12), vertically pushing down the bristle pin block(17) so that the bristle pin(18) can come out of a second material injected product(7).

Description

Morphine hole forming structure of mold for P and P toothbrushes {A plastic structure of pores of metallic mold for P and P toothbrush}

The present invention relates to a morphine hole forming structure of a P / P toothbrush mold.

In detail, by rotating the rotary core attached to the upper end of the rotating shaft with the rotating shaft 180 ° (see Fig. 10 state diagram) by the method of injection molding the first material from the injection molding of the first material to the second material after the second material The first material for molding a plurality of holes for planting the hair of the toothbrush when injection molding the secondary material on the injection side and injecting P-P toothbrush having two kinds of materials in one mold. On the injection side, a morphine combination consisting of a morphine and a morphine block is placed on the upper surface of the flat plate on the movable side, so that the end of the morphine is located in the morphine hole forming part of the first material injection molding so that the morphine hole can be formed during the injection of the first material. On the injection side of the second material, the cylinder rod is vertical to the morphine block so that the morphine can be removed without damaging the morphine hole by the injection of the first material. It can be pressed down to form a groove in which the morphine block can be pushed down on the upper side of the movable side template, so that the morphine can be accurately escaped from the injected material, and when the injection of the second material is completed, By causing the second material injection product to be pushed out of the mold, the shape of the morphine hole generated in the process of removing the morphine when forming the hole for planting the toothbrush hair using the morphine during the injection molding of the toothbrush product occurs. The present invention relates to a morphine hole forming structure of a P / P toothbrush mold, which enables accurate morphine hole forming operations, thereby improving productivity and quality.

Looking at the prior art, when the injection molding of a product consisting of two or more materials first to make the morphine hole by the morphine when molding one material, using a block with an inclined surface in the state of forming the morphine as the primary material By using the method of pulling out or pulling out, the problem is that the morphine hole is distorted by shaking when the morphine is pulled out of the product, and the structure and working method are complicated, and the work efficiency is lowered and the quality is reduced. Problems that have arisen have emerged as problems.

Korean Patent Publication No. 1997-014980 relates to an installation structure of ejector pins, return pins and ejector plates that push out products in a mold from an injection mold used for plastic injection molding. The present invention relates to an injection mold structure in which a return pin is arranged in a space block on the outside of the plate and the ejector pin can be installed in the space where the return pin is located, thereby further increasing the space utilization of the ejector plate. ,

The Korean Registered Utility Model Registration No. 20-0207668 is a revolutionary economical method that allows the cores for forming injection moldings to be interchangeably mounted on the mold, which is the outer frame of the mold, thereby significantly reducing the manufacturing cost and period of the mold. It is related with the core-compatible mold, and the basic frame is formed in the order of insulation plate-top fixing plate-runner stripper plate-upper plate-lower plate-supporting plate-leg-fixing plate-insulating plate, In the mold structure comprising a take-out means formed by including a roughness plate, a sound turn pin and a blowout pin, and the upper plate, the support plate and the lower plate, the upper and lower cores, the coupling portion of the base frame Is formed in the core bundle including a plurality of side core members surrounding the upper and lower cores, is formed to be compatible and removable in easy A core coupling part is also formed corresponding to the core bundle, and the takeout means is formed so that the core bundle is easily interchangeable and detachable, and the precision is stable. The core bundle includes an upper core, a lower core body, and the core. It is made of a plurality of edge core member for engaging the adjacent upper and lower plates surrounding the main body,

Korean Utility Model Publication No. 87-16278 discloses a sliding groove formed between an upper ejector plate and a lower ejector plate after a bolt is attached to the upper groove of a slider by contacting a gap retaining piece on the bottom of a tapered mill. It relates to a tapered mill pin sliding device of an injection mold, in which a slider is inserted into the slide to facilitate left and right movement.

The Korean Utility Model Publication No. 96-20684 relates to a ejection apparatus for an injection mold having a relatively simple structure without a movable side mounting plate and a milpin in an injection molding mold, and is particularly easy to take out in a structure without a milfin for taking out a product. It relates to a take-out structure using the back gate to make. By the configuration that the movable plate is assembled to the stationary plate in the stroke range and the stripper is pulled by the link, the product in close contact with the fixed core can be taken out without the mil pin by the configuration that is separated from the stationary plate by the stroke,

Korean Utility Model Publication No. 96-16675 is a fixed width and depth cut at predetermined positions on each side of the fixing core to fix the injection product to protect the hole of the injection molded product formed by the projection of the slide core. It is about thing which consisted of a groove,

In the above inventions, there is a problem that a work process by manual labor is always required for injection molding of a second material after first injection molding with a single material when injection molding a product having a dissimilar material.

Korean Laid-Open Patent Publication No. 2000-0049735 relates to a mold structure for multi-injection molding, which is fixedly installed at a place of an injection molding machine and is provided with at least one bottom plate serving as a support and at least one place of the bottom plate to selectively operate up and down. The first driving means, the lower mold to operate up and down by the selective drive of the first driving means, the lower receiving mold on one side and the lower rubber mold on the other side, the clamp to rotate the rotation from one side to the other side about the axis The second driving means, the lower end is fixed to the bottom plate, the upper end is inserted into the inside of the lower mold protrudes to the upper side as the lower mold is lowered to drop the product, the first molded by the product conveying member one side Third drive means for transferring to the other side in the upper mold, which is selectively operated up and down by the drive means provided in the injection molding machine, The first and second resin supply passages are formed to communicate with the upper mold and the upper rubber mold on the other side and the upper mold on the other side to form the product in contact with the secondary mold and the lower rubber mold. The resin supply passage is provided with an air supply unit, and a case having a synthetic resin supply unit at the top center of the upper mold, and a rubber supply unit at the inlet of the rubber supply path.

In the above invention, the molding of the primary material in the mold for the multi-injection, and then the primary molding product in the form of rails by using a cylinder to push the secondary molding material to the mold for secondary material molding, but the secondary material can be molded Due to the unstable movement of the primary molded product, it is difficult to fix the primary molded product at the correct position for the secondary molding. Particularly, the primary molded product must be held by using a driving means for the secondary molding. And there is a problem that the operation efficiency is low because the drive method is complicated.

The present invention to solve the above problems,

On the injection side of the first material, a morphine combination consisting of a morphine and a morphine block is placed on the upper surface of the movable shaft template having a flat surface so that the end of the morphine is located in the morphine hole forming part of the first material injection molding. In the second material injection side, the morphine block can be pushed down vertically so that the morphine can be pulled out without damaging the morphine hole by the first material injection. The groove on which the morphine block is pushed is formed to form a groove that can be accurately escaped from the material in which the morphine is injected, and when the injection of the second material is completed, the second material injection material is pushed out of the mold by the push rod and the plate. The present invention relates to a morphine hole forming structure of a mold for P and P toothbrushes,

In the case of toothbrush injection molding, it is possible to make accurate morphine hole molding work by avoiding the problem of distorting the morphine hole shape generated during the removal of the morphine when forming the hole for planting the toothbrush hair using morphine. Therefore, it aims at enabling productivity improvement and quality improvement.

1: Front view of the present invention (assembled state)

Figure 2: Cross Section (F-F)

Figure 3: Detail view (mold template part)

Fig. 4: Cross section (A-A)

Fig. 5: Detailed drawing (part B)

Fig. 6: Cross section (C-C)

Fig. 7: Cross section (D-D)

Figure 8: Morphine Combination

Figure 9: Morphine Combination (Saw at G)

Figure 10: state diagram (rotation of the rotating core)

11: Multi-injection product diagram (toothbrush shape)

Sign of drawing

(1) mounting plates (2) bolts (3) runner strippers (4) plates (5) molding nozzles (6) plates with fixed sides (7) injection materials for second material (8) rotary cores (9) first Injection Molding (10) Forming Nozzle (11) Heating Plate (12) Cylinder (13) Mill (14) Reciprocating Cylinder (15) Rotating Core Ejection Plate (16) Cylinder (17) Morphine Blocks (18) Moffins (19) Rotating Shafts (20) racks (21) gear (22) seals (23) bearings (24) bearings (25) nuts (26) cylinder rods (27) second material injection side morphine block seat (28) First Material Injection Side Morphine Block Seat (29) Spacer Block (30) Movable Side Template (31) Sliding Plate (32) Cylinder (33) Missing Morphine from Second Material Injection Side (34) Morphine of First Material Injection Hole

The present invention to solve the above problems,

By rotating the rotating core attached to the upper end of the rotating shaft with the rotating shaft by 180 ° and rotating it by 180 ° (see Fig. 10), the injection molding work is performed from the first material injection side to the primary material. In order to mold a plurality of holes for planting the hairs of the toothbrush when injection molding P and P toothbrushes having two kinds of materials in a mold, the first material injection side has a morphine and The morphine combination consisting of a morphine block is placed on the upper surface of the flat plate on the movable side so that the end of the morphine is positioned in the morphine hole forming part of the first material injection molding, and the morphine hole can be molded during the injection of the first material. On the material injection side, the cylinder rod can be pushed down vertically so that the morphine can be removed without damaging the morphine hole by the first material injection. The grooves on which the morphine blocks can be pushed down are formed on the upper surface of the movable template, so that the morphine can be accurately exited from the injected material. As the injection material is pushed out of the mold, it is possible to prevent the problem of distorting the shape of the morphine hole generated during the removal of the morphine when molding the hole for toothbrush hair by using the morphine during the injection molding of the toothbrush. Morphine hole forming structure of P / P toothbrush mold which enables morphine hole forming operation and thus productivity and quality improvement.

Conventionally, when injection molding a product made of two or more materials, first, when a single material is molded, the morphine holes are formed by morphine, and the morphine is removed using a block having an inclined surface in the state of being formed as a primary material. When using the method of pulling or pulling out the morphine when the morphine comes out of the product, the morphine hole is distorted by shaking, and the structure and working method are complicated, and the work efficiency is reduced and the quality deterioration occurs. As this problem comes up,

According to the present invention, when the injection molding of the toothbrush product is performed using a morphine, the shape of the morphine hole formed during the removal of the morphine when forming the hole for planting the toothbrush hair is prevented from causing a problem in the shape of the morphine hole. The morphine hole forming structure of the mold for P and P toothbrushes is made possible to improve productivity and quality accordingly.

Referring to the drawings in detail as follows.

1 is a front view (assembly state) of the present invention, FIG. 2 is a sectional view (FF), FIG. 3 is a detail view (mould template part), FIG. 4 is a sectional view (AA), and FIG. 5 is a detail view (part B). Figure 6 is a cross-sectional view (CC), Figure 7 is a cross-sectional view (DD), Figure 8 is a morphine combination, Figure 9 is a morphine combination (see G), Figure 10 is a state diagram (rotation of the rotating core) and Figure 11 is multiple An injection product drawing (toothbrush shape) is shown, with reference numerals (1) fixed side mounting plate, (2) bolt, (3) runner stripper plate, (4) upper plate, (5) molding nozzle, (6 Fixed side template, (7) Second material injection molding, (8) Rotary core, (9) First material injection molding, (10) Molding nozzle, (11) Lower plate, (12) Cylinder, (13) 14) reciprocating cylinder, (15) on rotating core eject plate, (16) cylinder, (17) morphine block, (18) morphine, (19) rotating shaft, (20) rack, (21) gear, (22 ) Seal, (23) Bearing, (24) Bearing, (25) Nut, (26) Cylinder rod, (27) Second material injection side morphine block Seat, (28) First material injection side morphine block(29) Spacer block, (30) Movable side template, (31) Sliding plate, (32) Cylinder, (33) Morphine missing from the second material injection side, (34) Inserting the morphine of the first material injection It can be seen that the hole.

In the rotation type injection operation in which a toothbrush composed of two kinds of materials is injected into one mold, the cylinder 32 is lifted by rotating the upper part of the rotary core ejector plate 15 connected to the rotation shaft 19. The rotary core 8 fixed to the upper end is lifted and the rotary shaft 19 and the rotary core 8 are rotated by 180 ° by the reciprocating cylinder 14 so that the first material injection molding 9 is the second material injection molding 7 In the state where the second material is to be injected (see FIG. 10), the morphine 18 for forming a hole 34 for inserting several brushes into the toothbrush when the first material injection material 9 is injected. ) And a morphine combination consisting of a morphine block (17) inside the rotary core (8), in the case of the first material injection side of the movable side template (30) corresponding to the bottom surface on which the bottom of the morphine block (17) is placed The first material injection-side morphine block seat surface 28 in a planar shape, the upper end of the morphine 18 is the first material yarn The second material of the movable side template 30 corresponding to the bottom surface on which the bottom surface of the morphine block 17 is placed, in the case where the morphine of the water 9 is inserted into the hole 34 to be fitted. Slot the injection-side morphine block seating surface 27 lower than the first material injection-side morphine block seating surface 28 and lower the morphine block 17 with the cylinder rod 26 operated by the cylinder 12. Pressing so that the morphine 18 stuck to the second material injection product 7 can be pulled out in the lower vertical direction so that the morphine is removed from the second material injection side 33, and when the second material injection work is finished, the cylinder (16) and the second material injection (7) is pushed out of the mold by pushing the mold side (6) and the movable plate (31) open and the movable side template (30) by the push rod (13) and the push plate (31). As the morphine hole forming structure of the P / P toothbrush mold, which has been made,

Morphine holes that can stick toothbrush hair during injection molding of P · P toothbrushes can be manufactured in an accurate shape without distortion.

When injection molding a product made of two or more materials, first, when molding one material, the morphine hole is formed by morphine, and the morphine is formed by using a block having an inclined surface in the state of being formed as a primary material. By using the pull-out method, when the morphine comes out of the product, the morphine hole is distorted by shaking, and it is not possible to form the correct morphine hole. By solving and applying

In the case of toothbrush injection molding, it is possible to make accurate morphine hole molding work by avoiding the problem of distorting the morphine hole shape generated during the removal of the morphine when forming the hole for planting the toothbrush hair using morphine. Therefore, it aims at enabling productivity improvement and quality improvement.

Claims (1)

In the morphine hole forming structure of the P / P toothbrush mold, The rotating core 8 fixed to the upper end of the rotating shaft 19 is installed in the concave portion at the top of the center of the movable side template 30, and the cylinder 16 is provided on the second material injection side of the movable side template 30. An operating push rod 13 is connected to the push plate 31, and a morphine block 17, on which the morphine 18 is assembled, is located inside the first material injection side of the rotating shaft 8, and the first side of the movable side template 30. Raised on the material injection side morphine block seat surface 28 so that the end of the morphine 18 is located in the hole 34 for fitting the morphine 18 of the first material injection product 9, 2 Inside the material injection side, the upper part of the movable side template 30 is formed at the position where the second material injection side morphine block seating surface 27 is formed with a groove deeper than the first material injection side morphine block seating surface 28. The morphine block 18 to which the morphine 18 is assembled is brought, but the morphine block 17 is pushed down in the vertical direction by the cylinder rod 26 of the cylinder 12 so that the morphine 18 is injected into the second material. P · morphine hole forming configuration of the mold for P toothbrush that features a structure that it exits from (7).