KR20020064860A - A variable metallic mold for P.P toothbrush - Google Patents

Abstract

PURPOSE: A variable type mold structure is provided to simplify the working process and the structure of the mold by accommodating a mold for fabricating a brush in a rotating plate. CONSTITUTION: An upper mold fixing member(2) is coupled to an upper mold supporter(1). An upper mold assembly(5) is attached to a lower end of the upper mold fixing member(2). A lower mold assembly(6) is adjacent to the upper mold assembly(5) about a mold boundary line. The lower mold assembly(6) is coupled to an upper portion of a lower mold fixing member(8). A mold(28) for forming a brush, a pushing rod(22), a spring(20) and a bolt(19) for fixing the pushing rod(22) are provided to fabricate the brush. A rotating shaft(9) is lifted by operating a cylinder(13) so that a rotating plate and a resin article(26) are lifted. Then, the rotating shaft(9) is rotated at an angle of 180 degrees by a cylinder(10), so the resin article(26) is continuously fabricated.

Description

Mold structure of variable morphine combination for P.P toothbrush manufacturing {A variable metallic mold for P.P toothbrush}

The present invention relates to a variable morphine combination mold structure for manufacturing P.P toothbrush.

In detail, when the injection molding of the PP toothbrush having different dissimilar materials using the multi-injection mold apparatus by the rotary method, the rotary shaft and the rotating plate are rotated in the rotary mold for the injection molding of the primary material and the secondary material. When the first injection molded product is rotated by 180 °, the first injection molded product is shaken, and therefore, the morphine combination mold must be manufactured and installed separately according to the problem of deterioration of quality during the injection molding of the second material and the toothbrush size from children to adults. Problems and problems of complex morphine injection molding mold structure will be related to the mold structure of variable morphine combination for PP toothbrush manufacturing, which can solve the problem by inventing variable morphine combination and new mold structure.

Looking at the prior art, when the injection molding of a product consisting of two or more materials, first molding one material, and then manually inserting the first injection molding material into the second injection molding mold by hand, and then injection molding the secondary material By using the final finishing method, the work process is complicated, work efficiency is lowered and quality deterioration has emerged.

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 is about a tapered mill pin sliding device of injection mold which slides a slider to make it easy to move left and right.

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 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 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,

In order to be able to manufacture injection molded products made of different materials by continuous injection molding operation without manual process in one mold, the rotating plate and the rotating shaft and rack that can rotate the rotating plate and the rotating plate up and down and 180 ° in the lower plate mold combination of the mold When the secondary material is molded after installing the pinion and the cylinder, and installing the mold structure capable of injection molding of different materials inside the left and right sides of the mold, the primary material is molded on one side and automatically moved to the other side by the rotating plate. At the same time, in the mold on the opposite side, it is related to the mold structure of the variable morphine combination for PP toothbrush manufacturing in a multi-injection mold apparatus by a rotation method which is configured to simultaneously start injection molding with a primary material. When the toothbrush is molded, a simple morphine mold is built into the rotating plate. And the structure of the mold is simply applied, and both sides of the rotating plate are formed to be inclined so that the rotational movement of the primary resin injection product can be precisely improved, thereby improving the quality and the number and size of morphine strands of the morphine mold. It is easy to change and apply, so the aim is to be able to produce freely adjusted with one mold from children to adults.

1: Assembly drawing of the rotating mold

Figure 2: Bottom plate mold combination plan

Figure 3: Variable Morphine Mold Combination Assembly

Figure 4: Lower mold assembly diagram after lifting the upper mold

5: State diagram when driving the rotating shaft

Figure 6: Appearance of the injection molded toothbrush

Sign of drawing

(1) supports for molds (2) top mold fasteners (3) inlet for rubber materials (4) forks for resin materials (5) top mold combinations (6) bottom mold combinations (7) fixing bolts (8) bottom mold fasteners (9) Axis of rotation (10) Cylinder (11) Rack (12) Pinion (13) Cylinder (14) Pivot and rotatable bearings (15) Pivot and rotatable bearings (16) Pivot and rotatable bearings (17) Mills (18 ) Moffin (19) Fixing bolts (20) Springs (21) Mold bottom support (22) Mill pins (23) Body plate lower body combinations (24) Rotating plates (25) Product injection supplies (26) Primary resin injection products (27) Molds for molding morphine of toothbrush products (28)

The present invention to solve the above problems,

This is a multi-injection mold for minimizing the work process and improving productivity during injection molding of the toothbrush, which is a product in which a resin material and a rubber material are combined. The cylinder 13 is operated to lift the rotary shaft 9 as shown in FIG. ) And the resin injection molding material 26 are lifted upwards, and the resin injection molding material 26, which has been subjected to the first injection molding operation by rotating the rotation shaft 9 by 180 ° with the cylinder 10, is successively secondary in one mold. When the toothbrush is to be injection molded in a multi-injection mold apparatus by a rubber injection molding method, as shown in Fig. 3, a morphine molding mold (28) is used to mold a hole for working the morphine 18 of the toothbrush composed of PP and rubber materials as shown in FIG. ), A push rod 22, a spring 20, and a push rod fixing bolt 19 are installed, and the morphine molding die 28 is installed inside the rotating plate 24 in the lower plate mold combination 6. Give the jaw like the part D of 2 and the morphine mold (28) During the primary resin injection molding (injection through the resin material inlet 4) after being prevented from supporting, the mil pin 22 installed in the lower plate mold fixing tool 8 is used to mold the mold for molding morphine 28 by the spring 20. Push the pin to position the morphine molding, the rotary plate 24 is rotated 180 ° by the rotary shaft 9 for the second rubber material injection molding as shown in Figure 5 to the primary resin injection product 26 the rubber material inlet (3 When rotating to the position where the second rubber material injection molding is made), the morphine molding die 28 is the primary resin by the morphine 18 being integrally rotated without being removed from the primary resin injection product 26. The injection product 26 is accurately fixed so as not to shake until it is moved to the mold position for the second rubber injection, and the side of the rotating plate 24 is inclined as shown in part E of FIG. When covering the top mold combination (5) for rubber material injection, 5) Morphine molding die 28 is pressed downward by the push rod (17) installed in the morphine 18 to the mold structure of the variable morphine combination for PP toothbrush manufacturing to separate the primary resin injection product (26). ,

Conventionally, when injection molding a product made of two or more materials, one material is first molded, and then the first injection molding material is mounted on the second injection molding mold by hand, followed by injection molding with a second material to complete the product. The work process is complicated and the working efficiency is reduced and the quality is deteriorated by using the method.In order to apply the PP toothbrush to the multi-injection mold apparatus by the rotation method, the injection molding of the primary material is performed for the secondary material molding. When the primary injection molded product is rotated 180 ° by using the rotating shaft and the rotating plate in the mold, the morphine combination mold is changed according to the problem of deterioration of quality during the injection molding of the secondary material and the toothbrush size of children and adults due to the shaking of the primary injection molded product. Since there is a problem that needs to be created and installed separately,

The present invention provides a quality improvement by precisely rotating the primary resin injection product when molding a PP toothbrush in a multi-injection molding apparatus by a rotation method, and simplifies the structure of the mold for morphine molding. At the same time, the number and size of morphine strands can be easily changed and applied, and the mold structure of the variable morphine combination for manufacturing PP toothbrushes can be freely adjusted and produced in one mold for children and adults.

Referring to the drawings in detail as follows.

Figure 1 is a multi-component injection mold assembly diagram of the rotation method to which the present invention is applied, Figure 2 is a plan view of the lower plate mold combination, Figure 3 is a front view of the variable morphine mold combination, Figure 4 is a lower mold assembly diagram after lifting the upper plate mold and Figure 5 6 is a state diagram when the rotary shaft is driven, and FIG. 6 is an external view of the injection-molded toothbrush, in which the reference numerals denote (1) the mold support, (2) the upper mold fixing tool, (3) the rubber material inlet, and (4) Resin entrance, (5) Sheet metal mold combination, (6) Lower metal mold combination, (7) Fixing bolt, (8) Lower metal mold fixing fixture, (9) Rotary shaft, (10) Cylinder, (11) Rack (12) Pinion, (13) cylinders, (14) up and down, rotatable bearings, (15) up and down, rotatable bearings, (16) up and down, rotatable bearings, (17) bars, (18) morphine, (19) fixing Bolt, (20) Spring, (21) Mold bottom support, (22) Mill pin, (23) Body plate mold body combination, (24) Swivel plate, (25) Product injection groove, (26) Primary resin injection product, ( 27) secondary Non-injection product, 28 it can be seen that the morphine molding die of the toothbrush product.

1, the upper plate mold fixing tool 2 is assembled to the upper mold support 1, and the upper plate mold combination 5 is attached to the lower end of the upper mold fixing tool 2, and the upper mold assembly 5 The lower plate mold combination 6 is in contact with the upper and lower mold separation lines, and the lower plate mold combination 6 is assembled on the upper portion of the lower plate mold fixture 8. The lower plate mold combination 6 is composed of a lower plate mold body combination 23, a product injection groove 25 and a rotating plate 24 as shown in FIG. (X part) and the right side consist of a rubber mold part (Y part). The rotating plate 24 is connected to the rotating shaft 9 by the fixing bolts 7, which are supported by the bearings 14, 15 and 16, which are rotatable and rotatable. The rack 11 and the pinion 12 are assembled in the rack, and the rack 11 is moved left and right by the cylinder 10 so that the rotation shaft 9 can be rotated through the pinion 12 and the cylinder 13 In the multi-injection mold apparatus by the rotary method that can be moved up and down by the rotating shaft 9), the morphine molding die 28 and pushes it to mold the morphine working configuration of the toothbrush composed of PP and rubber material The mold structure is provided with a rod 22, a spring 20, and a bolt fixing bolt 19. In order to minimize the work process and improve productivity of the toothbrush, which is a product in which a resin material and a rubber material are combined, a cylinder ( 13) by operating the rotary shaft (9) as shown in Figure 5 to rotate the rotary plate 24 and the resin material Lifting the entry (26) up and rotating the rotary shaft (9) by 180 ° to the cylinder 10 to the second injection molding molding of the resin material injection molding (26) to perform the second injection molding in one mold When the injection molding of the toothbrush in the multi-injection mold apparatus by the rotation method, the morphine molding mold 28 is installed inside the rotating plate 24 in the lower plate mold combination 6 and given a jaw as shown in part D of FIG. After the mold for morphine molding does not fall down, during the primary resin injection molding (injection through the resin material inlet 4), the mill pin 22 installed in the lower plate mold fixture 8 is morphine by the spring 20. Pushing the molding die 28 to hold the morphine molding position, and the rotary plate 24 is rotated 180 ° by the rotary shaft 9 as shown in Figure 5 for injection molding the second rubber material (26) ) To the position to be the second rubber material injection molding through the rubber material inlet (3) The morphine molding die 28 is rotated integrally with the morphine 18 without falling out of the primary resin injection product 26 until the primary resin injection product 26 moves to the mold position for the secondary rubber injection. It is fixed firmly so as not to be shaken. As shown in part E of FIG. 5, the side of the rotating plate 24 is inclined to be accurately seated after 180 ° rotation, and when the top plate mold combination 5 is covered for secondary rubber material injection. The morphine molding die 28 is pressed downward by the push rod 17 installed in the mold combination 5, and the morphine 18 is separated from the primary resin injection product 26. Then, the injection molding of the second rubber product is performed. After the end of the rotary plate 24 is rotated to go to the first resin product injection molding position is pushed up by the mill pin 22 to repeat the operation, molding the PP toothbrush in the multi-injection molding apparatus by the rotation method Rotational Movement of Primary Resin Injection Products It is possible to improve the quality by making it possible, and to easily change the number and size of the morphine (18) strands of the morphine molding mold (28) to be freely adjusted to produce a single mold from children to adults It becomes possible.

When inserting rubber material into toothbrush made of PP material and dissimilar materials with different materials, injection molding work in one mold using the multi-injection mold device by rotating method is required. Due to the shaking of the primary injection molded part when the primary injection molded part is rotated 180 ° by using the rotating shaft and the rotating plate in the rotating mold for forming the material, the problem of deterioration of quality during the injection molding of the secondary material and the size of the toothbrush for children and adults Solving the problem of making and installing morphine combination mold separately, by newly inventing and applying variable morphine combination mold structure of simple structure,

In the multi-injection molding apparatus based on the rotation method, it is possible to precisely rotate the primary resin injection product when molding the PP toothbrush, and to easily change the number and size of the morphine strands of the morphine molding mold. It aims to be able to produce freely adjusted with one mold from adult to adult.

Claims (1)

In the mold structure of variable morphine combination for P.P toothbrush manufacturing for application to a multi-injection mold apparatus by a rotation method, A combination of the variable morphine molding dies 28, which can be installed by changing the number of morphine 18 in the morphine molding mold 28 of the toothbrush product, as shown in FIG. As shown in FIG. 2, the lower plate mold combination 6 is placed in two places on the left and right sides of the inner side of the rotating plate 24, and a jaw is provided so as to prevent the morphine mold 28 from falling down. A rod 17 is provided on one side of (5), and a fixing bolt 19, a spring 20, and a pin 22 are provided on one side of the lower plate mold clamp 8 as shown in FIG. Mold structure of variable morphine combination for manufacturing PP toothbrush.