KR20070024043A - A multi injection mold system - Google Patents

Abstract

A multi injection mold system is provided to reduce a number of processes due to different material when injection-molding of mold products, thereby increasing productivity. A multi injection mold system includes an upper circular plate, a lower circular plate, a rotary core, a rotary shaft, a stepping motor or a servo-motor, a timing belt, and a controller. The upper circular plate and the lower circular plate have forming nozzles. The rotary core is fixed between the upper circular plate and the lower circular plate. The rotary core is fixed to the rotary shaft. The rotary core has a first material forming part, a second material forming part, a second material forming part, and a fourth material forming part. The servo-motor is connected to a deceleration gear. The timing belt with an inner gear is connected between a gear connected to an output side of the deceleration gear and a gear formed on the rotary shaft. The controller controls a rotational angle of the servo-motor, and is connected to the stepping motor or the servo-motor through an electrical wire.

Description

Multi injection mold system

1: stereoscopic view of the present invention

Fig. 2: Cross section (E-E)

Fig. 3: Cross section (D-D)

Fig. 4: Cross section (C-C)

Fig. 5: Cross section (A-A, for 4 materials)

Fig. 6: Cross section (A-A, for 3 materials)

Fig. 7: Cross section (B-B)

Figure 8: State diagram (upper mold combination removal state)

Figure 9: State diagram (rotational operation state of the rotating plate (8))

Sign of drawing

(1) mounting plate (2) bolt (3) runner stripper (4) plates (5) molding nozzles (6) plates, fixed side

(7) 2nd material injection molding (8) rotary core (9) 1st material injection molding (10) molding nozzles (11) base plate (12) cylinder (13) cylinder (14) stepping motor or servomotor (15) rotation Core ejector plate top (16) Rotating core ejector plate bottom (17) Movable side mounting plate (18) Bolt (19) Rotary shaft (20) Timing belt (21) Gear (22) Seal (23) Bearing (24) Bearing (25) Nut (26) Hole (27) Locking block (28) Locking block (29) Bolt (30) Spring (31) Ejector plate lower (32) Ejector plate (33) Ejector pin (34) Nut (35 Rod (36) Movable Side Combination (37) Spacer Blocks (38) Spacer Blocks (39) Forming Nozzles (40) Forming Nozzles (41) Third Material Injections (42) Fourth Material Injections (43) Gears (44) Reducers (45) Controllers (46) Electrical Wiring (47) Ejector Cylinders (48) First Material Molding Parts (49) Second Material Molding Parts (50) Third Material Molding Parts (51) Fourth Material Molding Parts (52) First Material Molding Part (53) Second Material Molding Part (54) Third Material Molding Part (α) Rotational Core Inclined Angle (α1) Rotation Angle (α2) Rotation Angle

The present invention relates to a multi-injection mold apparatus.

In detail, in order to continuously inject injection products composed of three or four kinds of materials in one mold, spacer blocks, runner stripper plates, and upper plate are sequentially installed and fixed on the fixed side mounting plate. After placing the movable side template assembly on the lower side of the lower plate, the rotary core is installed at the center of the template assembly, and the rotary core is fixedly connected to one side of the rotary shaft, and the other end of the rotary shaft is located under the mold. In the mold apparatus that is fixed and installed on the rotary core ejector plate and under the rotary core ejector plate, the cylinder on the left side and the cylinder on the right side, which are on the rotary core ejector plate and the rotary core ejector plate, move together up and down together with the rotating shaft. ,

When injecting three kinds of injection molded products, three material molding parts are installed in the rotating core, and the three material molding parts are positioned to have a rotation angle (α2) divided into three angles of 360˚. The four material forming parts are installed in the rotating core, and the four material forming parts are positioned to have a rotation angle α1 divided into 360 degrees and fixed to the gear formed on the rotating shaft and the "on the rotating core ejector plate". After connecting the gears of the stepping motor or servo motor which is decelerated by the gear reducer with the geared timing belt, the controller rotates the rotation angle of the rotating core accurately by controlling the rotation angle of the stepping motor or servo motor with the controller. Since the second material injection, the third material injection and the fourth material injection can be carried out in one mold after the first material injection operation,

The present invention relates to a multi-injection molding apparatus that enables efficient work of injection molding by solving problems such as excessive work process and productivity degradation caused by each work according to each material during injection molding of injection products.

Looking at the prior art, after injection molding of a product made of two or more materials, one material is first molded and then the first injection molded material is mounted on the second injection molding mold by hand and then injection molded into the second material. As the final product is completed and the method is used, the work process is complicated, the work efficiency is reduced, and there is a problem of quality deterioration. When the rotary type is applied, only the rotating shaft is slid by the cylinder.

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 structure in which the return pins are arranged in a space block outside the plate and the ejector pins can be installed in the space where the return pins are located, thereby increasing the space utilization of the ejector plate.

The Korean Utility Model Publication No. 87-16278 discloses a sliding groove formed between an upper ejector plate and a lower ejector plate after gluing the ball in a state where it is seated on the upper groove of the slider by contacting the gap retaining piece on the bottom of the tapered mill. It relates to a tapered mill pin sliding device of an injection mold inserted in the slider to facilitate the 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. It relates to a takeout structure using a back gate. By the configuration that the movable plate is pulled by the link to the stripper assembled on the stationary plate in the range of the stroke, the product in close contact with the fixed core can be taken out without a milpin by the configuration that is separated from the stationary plate by the stroke,

Korean Utility Model Publication No. 96-16675 is a fixing groove for fixing an injection product to protect a hole of an injection product formed by the projection of the slide core by cutting at a predetermined width and depth at predetermined positions on each side of the fixing core. Regarding composed of

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 Patent Laid-Open Publication No. 2000-0049735 relates to a mold structure for multi-injection molding, which is fixedly installed in place of an injection molding machine and is provided with at least one at least one place in place of the base plate, and is selectively operated up and down. 1 driving means, the lower receiving mold on one side and the lower rubber mold on the other side forming the lower mold product operated up and down by the selective driving of the first driving means, the second to rotate the clamp from one side to the other side about the axis. Drive means, the lower end is fixed to the bottom plate, the upper end is inserted into the inside of the lower mold protrudes upwards as the lower mold is lowered to drop the product, the first molded by the product conveying member from the other side Third driving means for transferring to the side, the upper mold, which is operated up and down selectively by the drive means provided in the injection molding machine, the lower A first resin and a second resin supply passage 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 mold and the lower rubber mold. The air supply unit is provided in the supply passage, and the upper end of the upper mold has a synthetic resin supply case, and the rubber supply passage is provided with a rubber supply unit.

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 easily work with injection molding products of 3 materials or 4 materials in one mold, when inserting injection molding products of 3 materials, 3 material molding parts are installed on a rotating core, and the 3 material molding parts Position 360 degrees to have three angles of rotation (α2), and in the case of injection of four kinds of materials, four material molding parts are installed on the rotating core, and these four material molding parts are rotated at four angles of 360 ° (α1). ), And stepping with the controller after connecting the gear formed on the rotating shaft and the gear of the stepping motor or servo motor decelerated by the gear reducer fixed to the "on the rotating core ejector plate" with the gear, By precisely rotating the rotation angle of the rotating core by precisely controlling the rotation angle of the motor or servo motor, the second material injection, the third material injection and the fourth material injection are continuously performed after the injection of the first material. To a multi-injection mold apparatus that can be carried out in one mold,

It aims to enable efficient work of injection molding work by solving problems such as excessive work process and productivity deterioration problem caused by each work according to each material during injection molding work of injection product.

The present invention to solve the above problems,

For continuous injection work of 3 or 4 kinds of materials in one mold, spacer block, runner stripper plate and upper plate are installed in the fixed side mounting plate and fixed with bolts. Place the movable side template assembly on the upper side of the lower plate, and install the rotary core at the center of the template assembly, and fix the rotary core to one side of the rotary shaft, and connect the other end of the rotary shaft to the rotary core ejector. In the mold apparatus fixed and mounted under the plate and the rotary core ejector plate, the cylinder on the left side and the cylinder on the right side, which are on the rotary core ejector plate and the rotary core ejector plate, move together up and down together with the rotating shaft.

When injecting three kinds of injection molded products, three material molding parts are installed on a rotating core, and the three material molding parts are positioned to have a rotation angle (α2) divided into three angles of 360˚. The four material forming parts are installed in the rotating core, and the four material forming parts are positioned to have a rotation angle α1 divided into 360 degrees and fixed to the gear formed on the rotating shaft and the "on the rotating core ejector plate". After connecting the gear of the stepping motor or servo motor which is decelerated by the gear reducer with the geared timing belt, the controller rotates the rotation angle of the rotating core accurately by controlling the rotation angle of the stamping motor or the servo motor with the controller. The second material injection, the third material injection and the fourth material injection can be carried out in one mold continuously after the first material injection operation.

It is a multi-injection molding machine that enables efficient work of injection molding work by solving problems such as excessive work process and productivity deterioration problem caused by each work according to each material during injection molding work of injection products.

Conventionally, when injection molding a product made of two or more materials, one material is first molded, and then the first injection molded material is mounted on the second injection molding mold by hand, followed by injection molding with a second material to complete the product. By using the method, the work process is complicated, the working efficiency is low, there is a problem of quality deterioration, and in the case of applying the rotary type, only the rotating shaft is configured to slide by the cylinder, so problems such as productivity and durability are emerging as problems.

The present invention is a multi-injection molding apparatus that enables efficient work of injection molding work by solving problems such as excessive occurrence of work process and lowering of productivity due to each work according to each material during injection molding work of injection products.

Referring to the drawings in detail as follows.

Figure 1 is a three-dimensional view of the present invention, Figure 2 is a cross-sectional view (EE), Figure 3 is a cross-sectional view (DD), Figure 4 is a cross-sectional view (CC), Figure 5 is a cross-sectional view (for AA, 4 materials) and Figure 6 7 is a cross-sectional view (for AA, 3 materials), FIG. 7 is a cross-sectional view (BB), FIG. 8 is a state diagram (upper mold combination removal state), and FIG. 9 is a state diagram (rotation operation state of the rotating plate 8). (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, (8) Rotating Core, (9) Injection Material, (10) Molding Nozzle, (11) Lower Plate, (12) Cylinder, (13) Cylinder, (14) Stepping Motor or Servo Motor, ( 15) Above the rotating core ejector plate, (16) Below the rotating core ejector plate, (17) movable side mounting plate, (18) bolt, (19) rotating shaft, (20) timing belt, (21) gear, (22) seal (seal), (23) Bearings, (24) Bearings, (25) Nuts, (26) Bore, (27) Fixed Blocks, (28) Fixed Blocks, (29) Bolts, (30) Springs (31) Ejector Plates , (32) On ejector plate, (33) ejector pin, (34) nut, (35) rod, (36) movable side template combination, (37) spacer block, (38) spacer block, (39) molding Nozzle, (40) Molding Nozzle, (41) Third Material Injection, (42) Fourth Material Injection, (43) Gear, (44) Reducer, (45) Controller, (46) Electrical Wiring, (47) Ejector Cylinder (1) 8 first material forming part, (49) second material forming part, (50) third material forming part, (51) fourth material forming part, (52) first material forming part, (53 The second material forming part, (54) the third material forming part, (α) rotation core inclination angle, (α1) rotation angle, (α2) rotation angle.

For continuous injection work of three or four kinds of materials in one mold, the spacer block 37, the runner stripper plate 3 and the upper plate 4 are mounted on the fixed side mounting plate 1 After sequentially installing and fixing with bolts (2), the movable side template combination 36 is positioned on the upper surface of the lower plate 11 at the bottom thereof, and the rotary core 8 is positioned at the center of the template combination 36. The rotary core 8 is fixedly connected to one side of the rotary shaft 19, and the other end of the rotary shaft 19 is placed on the rotary core ejector plate 15 and the rotary core ejector plate 16 located at the lower mold die. The upper and lower rotary core ejector plate 15 and the lower rotary core ejector plate 16 can be integrally moved up and down together with the rotary shaft 19 by the cylinder 12 on the left side and the cylinder 13 on the right side. In preformed mould,

The stationary side plate 6 is attached to the center of the upper plate 4 together with the molding nozzles 5, 10, 39, 40, but the rotary core 8 is located at the center of the movable side plate assembly 36. The first material molding part 48, the second material molding part 49, the third material molding part 50, and the fourth material at the positions where the molding nozzles 5, 10, 39, and 40 are respectively injected. Each molding unit 51 is provided with an angle of rotation angle α1. However, when only three types of injection materials are to be injected, only three molding nozzles are mounted on the stationary side plate 6, and then the first material is installed. After forming the molding portion 52, the second material molding portion 53 and the third material molding portion 54 at an angle of rotation angle α2, the rotation angle α1 (α2) is set. Stepping motor or servo capable of precisely rotating the gear 21 on the lower side of the rotating shaft 19 so that the rotation angle can be accurately controlled by the controller 45 on the rotating core ejector plate 15. Connect the motor (14) with the reducer (44). After the device, the gear 43 connected to the speed reducer 44 and the gear 21 formed on the rotary shaft 19 are connected by a timing belt 20, which is a belt type, in which gears are formed. Ejector cylinder 47 is installed on the material molding plate that injects the final material during injection of the material, so that the product can be pushed out after the injection of the material is completed. The ejector plate upper part 32 and the ejector plate lower part 31, which support the ejector pin 33 connected to the movable side template combination 36, are bolted inside the injection side into which the three material (when injection of the four material injection molding) is injected. It is supported in a state capable of vertical flow along the inner surface of the fixed block (27) and (28) fixed by (29), and drills an ejector pin by drilling holes in the lower part of the ejector plate 31 and the movable side mounting plate 17, respectively. A spring (30) capable of driving (33) and a rod (35) after fixing the cylinder (12) (13) to the lower plate (11) To the rotary core ejector plate (15) with a nut (34) so that the stepping motor or servomotor (14), the rotary core (8), the rotary shaft (19), the rotary core ejector plate (15), and the rotary core ejector plate The lower 16 can be lifted and rotated at the same time (Fig. 9). At this time, the ejector pin 33 is driven by the spring 30, and when the four kinds of materials are injected, the injection moldings (7) (9) (41) As a multi-injection mold apparatus having a structure that allows the injection molding (7) and (9) to be easily separated from the movable side template combination (36),

It is possible to continuously operate injection molding products of 3 or 4 materials by controlling the exact angle of rotation in one mold.

When injection molding a product made of two or more materials, first, one material is molded and then the first injection molding material is mounted on the second injection molding mold by hand, and then the injection molding is performed as a secondary material to finally complete the product. The work process is complicated and the working efficiency is lowered and the quality is deteriorated, and when the rotary type is applied, only the rotating shaft is slid by the cylinder to solve the problems such as productivity and durability.

It aims to enable efficient work of injection molding work by solving problems such as excessive work process and productivity deterioration problem caused by each work according to each material during injection molding work of injection product.

Claims (1)

In the multi-injection mold apparatus, The rotating core 8 located in the center between the upper plate 4 and the lower plate 11, in which the molding nozzles 5, 10, 39, 40 are embedded, is fixed to one end of the rotating shaft 19, In this rotary core 8, the first material molding part 48, the second material molding part 49, the third material molding part 50, and the fourth material molding part 51 are divided into four quarters of 360 °. It is formed at the rotation angle α1 (in case of four kinds of material injection), or the first material molding part 52, the second material molding part 53, and the third material molding part 54 divide 360 degrees into three parts. It is formed at one rotation angle α2 (in the case of injection of three kinds of materials), the gear 21 is formed on the lower side of the rotation shaft 19, and the reducer 44 is placed on the rotary core ejector plate 15. After the stepping motor or servomotor 14 connected is fixed and installed, a timing belt 20 in which a gear is formed between the gear 43 connected to the output side of the reducer 44 and the gear 21 formed on the rotary shaft 19. And stepping motor or servo motor (14) The controller (45) for controlling the rotation angle of the multi-injection mold apparatus, characterized in that connected to the stepping motor or servo motor 14 by an electrical wiring (46).

Images