Injection molding machine

Abstract

This injection molding machine may comprise: a rotary station in which a rotational driving source is disposed; a rotary body disposed on the rotary station and rotated by the rotational driving source; a plurality of molds arranged on the rotary body and spaced apart from each other, a cavity being formed in at least one of a fixed mold or a movable mold, and the movable mold having an injection passage through which a material passes; an injection molding unit that molds and supplies a material; a guide that has a guide passage for guiding the material, supplied from the injection molding unit, to the injection passage; a raising / lowering mechanism for raising or lowering the guide; and an ejecting mechanism for raising or lowering the movable mold of a mold, among the plurality of molds, located in an ejecting region, wherein the guide can press the movable mold from above the movable mold when lowered by the raising / lowering mechanism.

Description

injection molding machine

[0001] The present invention relates to an injection molding machine capable of injection molding a product.

[0002] Methods for manufacturing products using synthetic resins such as plastic as raw materials include injection molding using an injection mold, vacuum molding using air suction, and blow molding using air blow.

[0003] The injection molding method can be performed by an injection molding device, and the injection molding device is a device that injects molten resin or the like into a cavity, which is a space within a mold, and then cools the molten resin within the cavity within the mold to manufacture an injection molded product.

[0004] An injection molding device includes a mold having a cavity formed in the same shape as the injection product to be manufactured, and an injection molding machine that injects molten resin into the cavity. The mold may include a fixed mold and a movable mold that is coupled to and separated from the fixed mold, and the cavity may be formed between the fixed mold and the movable mold.

[0005] The molten resin injected into the cavity in the injection molding machine can be cooled and solidified in the cavity, and the cooled injection molded product can be taken out of the mold after the movable mold is separated from the fixed mold.

[0006] Such an injection molding device may include an injection molding machine and a pair of molds, each of which may include a fixed mold and a movable mold.

[0007] If the maximum force that connects the fixed mold and the movable mold of the injection molding device, i.e. the clamping force, is low, the precision of the product may decrease and the defect rate may increase.

[0008] The present embodiment provides an injection molding machine having a simple guide configuration and easy guide manufacturing.

[0009] An injection molding machine according to the present embodiment comprises: a mold in which a cavity is formed in at least one of a fixed mold and a movable mold, and an injection passage through which a material passes is formed in the movable mold; an injection molding machine for molding and supplying a material; a guide for guiding a material supplied from the injection molding machine to the injection passage; and an elevating mechanism for elevating the guide, wherein when the guide is lowered by the elevating mechanism, the movable mold can be pressed from above the movable mold.

[0010] The guide may include an upper plate; and a lower plate having an upper surface bonded to a lower surface of the upper plate.

[0011] An upper guide groove may be formed on the lower surface of the upper plate to guide the material in a horizontal direction.

[0012] On the upper surface of the lower plate, a lower guide groove for horizontally guiding the material may be formed opposite the upper guide groove.

[0013] The lower plate may have a guide passage formed through the upper guide groove and the lower guide groove to guide the material guided into the injection passage.

[0014] The upper surface of the lower plate can be diffusion bonded to the lower surface of the upper plate.

[0015] The movable mold can be mounted on the upper surface of the fixed mold.

[0016] The lower plate can come into contact with the upper surface of the movable mold when the guide by the lifting mechanism is lowered.

[0017] The injection molding machine may further include a one-way valve.

[0018] A one-way valve may be placed in the injection passage. The one-way valve may be opened by the material.

[0019] A one-way valve may include a valve body having an upper opening and a lower opening formed therein; a valve body that is arranged to be raised and lowered in the valve body and opens and closes the upper opening; a spring that elastically supports the valve body; and a spring seat that supports the spring inside the valve body and has an inner opening formed therein through which a material passes.

[0020] The injection molding machine may further include a cylinder arranged on an upper plate or a lower plate; and an elevating pin that is lowered into the upper bore or raised above the upper bore by the cylinder.

[0021] The outer circumference of the lifting pin can be spaced horizontally from the guide passage.

[0022] The injection molding machine may further include a forward / reverse mechanism.

[0023] The advance / retreat mechanism can advance the injection molding machine along the guide or retract the injection molding machine away from the guide.

[0024] The guide may include an injection molding machine facing surface facing the injection molding machine and a movable mold facing surface facing the movable mold.

[0025] The inlet of the upper guide groove and the inlet of the lower guide groove can be formed on opposite surfaces of the injection molding machine.

[0026] The exit of the guide passage can be formed on the surface facing the movable mold.

[0027] The upper guide groove and the lower guide groove can be opened horizontally.

[0028] The guide passage can be opened vertically.

[0029] The guide may include multiple peripheral surfaces and a lower surface and an upper surface.

[0030] The injection molding machine facing surface may be one of a plurality of peripheral surfaces.

[0031] The opposing surface of the movable mold may be the lower surface.

[0032] The guide may be equipped with a guide heater that heats the upper guide groove and the lower guide groove.

[0033] The lifting mechanism may include an lifting guide; an upper body installed on the lifting guide; a pressure cylinder installed on the upper body; and a guide holder that is elevated by the pressure cylinder.

[0034] The guide can be placed in the guide holder.

[0035] An injection molding machine may include a rotary station having a rotary driving source arranged thereon; and a rotary arranged above the rotary station and rotated by the rotary driving source.

[0036] A plurality of molds are provided, and the plurality of molds can be placed spaced apart from each other on the rotary.

[0037] The fixed mold can be fixed to the upper surface of the rotary.

[0038] According to this embodiment, since a guide that guides a material into an injection passage of a movable mold presses the movable mold from the upper side of the movable mold, the load of the mold and the pressing force of the guide act in a vertical direction, and a decrease in precision that may occur when the mold is deformed can be minimized.

[0039] In addition, the clamping force for fastening the movable mold to the fixed mold is applied in the vertical direction, and the injection direction of the injection molding machine is implemented in the horizontal direction, so that it can be used without modifying the mold.

[0040] In addition, the upper guide groove of the upper plate and the upper guide groove of the lower plate guide the material in the horizontal direction, and the guide passage formed in the lower plate guides the material in the vertical direction, so that the flow direction of the material can be changed by the guide with a simple structure, pressure loss can be minimized during injection molding, and the product can be uniformed.

[0041] Figure 1 is a plan view of an injection molding machine according to the present embodiment,

[0042] Fig. 2 is a side view of an injection molding machine according to the present embodiment.

[0043] Figure 3 is an operating state diagram of an injection molding machine according to the present embodiment.

[0044] Figure 4 is a diagram illustrating a guide according to the present embodiment;

[0045] Fig. 5 is a diagram illustrating a movable mold according to the present embodiment;

[0046] Fig. 6 is a diagram showing when the injection passage of the movable mold according to the present embodiment is closed.

[0047] Fig. 7 is a diagram showing when the injection passage of the movable mold according to the present embodiment is opened.

[0048] Figure 8 is a plan view of a spring sheet according to the present embodiment;

[0049] Figure 9 is a control block diagram of an injection molding machine according to the present embodiment.

[0050] Hereinafter, specific embodiments of the present invention will be described in detail with drawings.

[0051] Fig. 1 is a plan view of an injection molding machine according to the present embodiment, and Fig. 2 is a side view of the injection molding machine according to the present embodiment. Fig. 3 is an operating state diagram of the injection molding machine according to the present embodiment.

[0052] Fig. 3 (a) is a drawing when the elevating mechanism does not press the guide to the movable mold and the nozzle of the injection molding machine is not connected to the guide, Fig. 3 (b) is a drawing when the elevating mechanism presses the guide to the movable mold and the nozzle of the injection molding machine is not connected to the guide, and Fig. 3 (c) is a drawing when the elevating mechanism presses the guide to the movable mold and the nozzle of the injection molding machine is connected to the guide.

[0053] An injection molding machine according to the present embodiment may include a rotary station (1); a rotary (2); a plurality of molds (3); an injection molding machine (4); a guide (5); an elevator mechanism (6) and an ejection mechanism (7).

[0054] The rotary station (1) may include a station body (11) forming its exterior.

[0055] The station body (11) may be a fixed table that rotatably supports the rotary (2). A space (S1) in which a rotational driving source (12) is accommodated may be formed inside the station body (11). The station body (11) may include a door (15) that can be opened and closed.

[0056] The rotary station (1) may include a rotary drive source (12) that rotates the rotary (2).

[0057] The rotation drive source (12) can be placed inside the station body (11).

[0058] The rotary drive source (12) may include a motor (13) that generates a rotary driving force and a reducer (14) that transmits the driving force generated from the motor (13) to the rotary (2).

[0059] The motor (13) may include a rotating shaft, and an example of the motor (13) may be a servo motor.

[0060] The reducer (14) may include a driving gear connected to the rotational shaft of the motor (12) and a driven gear that rotates the rotary (2). The reducer (14) may further include an intermediate gear that transmits power between the driving gear and the driven gear.

[0061] The rotary drive source (12) can repeat the rotation mode and the stationary mode.

[0062] The rotation mode may be a mode in which the rotation drive source (12) rotates the rotary (2) by 120°.

[0063] The stationary mode may be a mode in which the rotary drive source (12) does not rotate the rotary (2) and the rotary (2) is stationary.

[0064] The rotary (2) can be arranged on the upper side of the rotary station (1). The rotary (2) can be arranged horizontally on the upper side of the rotary station (1). The rotary (2) can be a circular plate or a ring-shaped plate. The rotary (2) can be rotated around a rotational center axis. The rotational center axis of the rotary (2) can be a vertical center axis in the up-down direction (Z).

[0065] The rotary (2) may be a rotary table that is rotated by a rotary driving source (12).

[0066] The rotary (2) can be a rotary table on which multiple molds (3) are mounted, and the positions of each of the multiple molds (3) can be changed.

[0067] The lower surface of the rotary (2) can face the rotary station (1) in the up-down direction (Z).

[0068] The upper surface of the rotary (2) may be a mold mounting surface on which multiple molds (3) are mounted.

[0069] The upper surface of the rotary (2) may include an injection area (A1); a cooling area (A2); and an ejection area (A3).

[0070] The injection area (A1) may be an area where any one of the plurality of molds (3) is located on the lower side of the guide (5).

[0071] The mold (3) located on the lower side of the guide (5) can be pressurized by the guide (5) and can receive material from the guide (5).

[0072] Any one of the plurality of molds (3) can be pressed downward by a guide (5) in the injection area (A1) and can receive material from the guide (5).

[0073] The cooling area (A2) may be an area where another one of the plurality of molds (3) is cooled. The mold (3) located in the cooling area (A2) may be cooled by air cooling or water cooling.

[0074] The extraction area (A3) may be an area where another one of the plurality of molds (3) is located below the extraction mechanism (7). The mold (3) located below the extraction mechanism (7) can be opened by the extraction mechanism (7) in the extraction area (A3). The opened mold (3) can be closed by the extraction mechanism (7) in the extraction area (A3).

[0075] A plurality of molds (3) can be arranged spaced apart from each other on the rotary (2). Each of the plurality of molds (3) can be arranged on an upper surface of the rotary (2) other than the rotational center axis of the rotary (2) and not on the rotational center axis of the rotary (2).

[0076] A plurality of molds (3) can be arranged equiangularly and spaced apart from each other on the rotary (2). The plurality of molds (3) can be spaced apart in the horizontal direction (XY). The number of the plurality of molds (3) can be three or four.

[0077] When there are three molds (3), the molds (3) can be arranged at intervals of 120° on the upper surface of the rotary (2). When there are four molds (3), the molds (3) can be arranged at intervals of 90° on the upper surface of the rotary (2).

[0078] Hereinafter, it is described that there are three molds (3) placed in the rotary (2), but of course, the number of molds (3) is not limited.

[0079] Each of the plurality of molds (3) may include a fixed mold (31) and a movable mold (32).

[0080] The fixed mold (31) and the movable mold (32) can form one set, and the injection molding machine can include multiple sets of molds (3).

[0081] When there are three sets of molds (3), one set of molds (3) can be positioned in the injection area (A1), another set of molds (3) can be positioned in the cooling area (A2), and another set of molds (3) can be positioned in the ejection area (A3).

[0082] A cavity (33) may be formed in at least one of the fixed mold (31) and the movable mold (32). When the cavity (33) is formed in the fixed mold (31), the cavity (33) may be a fixed cavity formed on the upper surface of the fixed mold. When the cavity (33) is formed in the movable mold (32), the cavity (33) may be a movable cavity formed on the lower surface of the movable mold (32).

[0083] The fixed mold (31) can be mounted on the upper surface of the rotary (2). The fixed mold (31) can be fixed to the upper surface of the rotary (2).

[0084] The movable mold (32) can be placed on the upper surface of the fixed mold (31). The movable mold (32) can be placed on the upper surface of the fixed mold (31) and closed with the fixed mold (31), and can be raised from the fixed mold (31) and opened with the fixed mold (31).

[0085] When the movable mold (32) is placed on the fixed mold (31), the movable mold (32) can press the fixed mold (31) from the upper side of the fixed mold (31), and the load of the movable mold (32) can be applied to the fixed mold (31).

[0086] At least one of the fixed mold (31) and the movable mold (32) may be formed with an injection passage (34) through which material passes. The injection passage (34) may be a material input passage for injecting material into the cavity (33).

[0087] It is possible that the injection passage (34) is formed in the fixed mold (31) and not formed in the movable mold (32). It is also possible that the injection passage (34) is formed in the movable mold (32) and not formed in the fixed mold (31). It is also possible that the injection passage (34) is formed in each of the fixed mold (31) and the movable mold (32).

[0088] When the injection passage (34) is formed in the movable mold (32), the height of the injection molding machine (4) can be high, interference between the injection molding machine (4) and the rotary (2) can be minimized, and it is preferable that the injection passage (34) is formed in the movable mold (32).

[0089] Hereinafter, it is described that the injection passage (34) is formed in the movable mold (32), but the injection passage (34) is not limited to being formed in the movable mold (32), and it is of course also possible to be formed in the fixed mold (31).

[0090] The inlet of the injection passage (34) may be formed on the upper surface of the movable mold (32), and the outlet of the injection passage (34) may be communicated with the cavity (33). The injection passage (34) may include a vertical passage formed long in the vertical direction (Z) in the movable mold (32).

[0091] An injection molding machine (4) can mold and supply materials. The injection molding machine (4) can heat raw material resin to convert it into molten resin, and supply the converted molten resin to a guide (5). That is, the injection molding machine (4) can supply materials (i.e., molten resin) to the guide (5).

[0092] An injection molding machine (4) may include an injection molding machine body (41) having an internal passage formed therein; a nozzle (42) installed in the injection molding machine body (41); a main heater (43) installed in the injection molding machine body (41); a screw (44) rotatably received in the internal passage; a shaft (45) that rotates the screw (44); and a shaft supporter (46) that supports the shaft (44).

[0093] The injection molding machine body (41) can be formed with a hopper into which material is fed into an internal passage.

[0094] The nozzle (42) can be formed at one end of the injection molding machine body (41).

[0095] The main heater (43) can be installed between the inner and outer walls of the injection molding machine body (41).

[0096] The screw (44) can be arranged long in the forward and backward direction (X) in the internal passage, and when rotated, can transport the material to the nozzle (42).

[0097] A shaft (45) can be connected to one end of a screw (44). The shaft (45) can be arranged long in the front-back direction (X).

[0098] The shaft supporter (46) can be connected to the other end of the injection machine body (41).

[0099] The injection molding machine (4) may further include an injection motor (47) that rotates the shaft (45).

[0100] The injection molding machine may include a motor housing (48) surrounding an injection motor (47).

[0101] The injection motor (47) can be placed on the shaft supporter (46) or the motor housing (48).

[0102] The injection molding machine may further include a forward / reverse mechanism (8).

[0103] The advance / retreat mechanism (8) can advance the injection molding machine (4) toward the guide (5) or retreat the injection molding machine (4) from the guide (5).

[0104] The advance / retreat mechanism (8) can advance / retreat the injection molding machine (4) in the forward / backward direction (X).

[0105] The advance / retreat mechanism (8) may include an advance / retreat shaft (81) and an advance / retreat driving source (82) that advances / retreats the advance / retreat shaft (81).

[0106] The advance / retreat shaft (81) can be connected to the injection molding machine (4) and can advance / retreat the injection molding machine (4) in the forward / backward direction (X).

[0107] The advance / retreat shaft (81) can be connected to at least one of the injection molding machine body (41) and the shaft supporter (46).

[0108] The advance / retreat shaft (81) may be a hollow shaft, and the shaft (45) may be rotatably accommodated inside the advance / retreat shaft (81).

[0109] The advance / retreat driving source (82) may include a advance / retreat motor capable of advancing / retreating the advance / retreat shaft (81). The advance / retreat driving source (82) may further include at least one power transmission member that transmits the driving force of the advance / retreat motor to the advance / retreat shaft.

[0110] The forward / reverse driving source (82) can be placed in the motor housing (48).

[0111] The injection molding machine (4) can be advanced to the first position (P1) by the advance / retreat mechanism (8) as shown in (c) of Fig. 3 and connected to the guide (5).

[0112] The injection molding machine (4) can be retracted to the second position (P2) as shown in (a) or (b) of Fig. 3, and can be spaced apart from the guide (5) in the front-back direction (X).

[0113] The injection molding machine (4) can be advanced to the first position (P1) and connected to the guide (5) after the guide (5) is lowered by the lifting mechanism (6).

[0114] The injection molding machine (4) can be retracted to the second position (P2) before the guide (5) is raised by the lifting mechanism (6) and separated from the guide (5).

[0115] When the injection molding machine (4) is positioned at the second position (P2), the lifting mechanism (6) can raise and lower the guide (5) to the first height (h1) or the second height (h2).

[0116] When the lifting mechanism (6) lowers the guide (5) to the first height (h1), the advance / retreat mechanism (8) can advance the injection molding machine (4) to the first position (P1).

[0117] While the advance / retreat mechanism (8) has moved the injection molding machine (4) back to the second position (P2), the elevation mechanism (6) can raise the guide (5) to the second height (h2).

[0118] The guide (5) can pressurize the movable core (32) to the fixed core (31).

[0119] The guide (5) can guide the material supplied from the injection molding machine (4) to the mold (3). The guide (5) can guide the material supplied from the injection molding machine (4) to the injection passage (34).

[0120] A guide passage (51) can be formed in the guide (5), and the guide passage (51) can guide the material supplied from the injection molding machine (4) to the guide (5) to the injection passage (34) of the mold (3). The guide passage (51) can guide the material supplied from the injection molding machine (4) to the guide (5) to the movable core (32). The guide passage (51) can guide the material supplied from the injection molding machine (4) to the injection passage (34) of the mold (3) located in the injection area (A1).

[0121] The guide (5) can be separated from or connected to each of the movable mold (32) and the injection molding machine (4). The guide (5) can be a nozzle-mold connector arranged between the nozzle (42) and the movable core (32).

[0122] When the guide (5) pressurizes the movable mold (32) among the molds (3) and the nozzle (42) of the injection molding machine (4) is connected to the guide passage (51) of the guide (5), the injection molding machine (4) can supply material to the guide passage (51) of the guide (5), the guide (5) can guide the material in the guide passage (51) to the injection passage (34), and the material guided to the injection passage (34) can be injected into the cavity (33).

[0123] When the guide (5) is lowered by the lifting mechanism (6), it can pressurize the movable mold (32) from the upper side of the movable mold (32).

[0124] When the guide (5) presses the movable mold (32) from the upper side of the movable mold (32), the pressing force acts in the downward direction, and the mold fastening force that fastens the movable mold (32) to the fixed mold (31) can be maximized.

[0125] The weight of the mold (3) and the pressure of the guide (5) can be applied to the ground where the injection molding machine is installed, and the decrease in precision of the product due to loss or deformation of the mold (3) can be minimized.

[0126] That is, the guide (5) may be a pressure member that improves the mold fastening force and a material guide that transfers the material to the movable mold (32).

[0127] The guide (5) can be placed in the guide holder (64) of the elevator mechanism (6). The upper surface of the guide (5) can be placed in the guide holder (64).

[0128] The guide (5) may include an injection molding machine facing surface (52) facing the injection molding machine (4) and a movable mold facing surface (53) facing the movable mold (32), as shown in (a) of FIG. 3.

[0129] The injection molding machine facing surface (52) can face the injection molding machine (4) in the front-back direction (X).

[0130] The movable mold facing surface (53) can face the movable mold (32) in the up-down direction (Z).

[0131] The entrance (51a) of the guide passage (51) can be formed on the surface (52) facing the injection molding machine.

[0132] The exit (51b) of the guide passage (51) can be formed on the movable mold facing surface (53).

[0133] The guide passage (51) may have a shape that is bent at least once.

[0134] The opening direction of the inlet (51a) and the opening direction of the outlet (51b) may be different. The opening direction of the inlet (51a) and the opening direction of the outlet (51b) may be orthogonal.

[0135] The opening direction of the inlet (51a) can be horizontal and can be the same as the advancing and retreating direction (X) of the injection molding machine (4). The opening direction of the inlet (51a) can be the forward and backward direction (X).

[0136] The opening direction of the exit (51b) can be vertical or in the up-down direction (Z).

[0137] The guide (5) may include multiple peripheral surfaces and a lower surface and an upper surface.

[0138] One of the multiple peripheral surfaces of the guide (5) can be in contact with or separated from the nozzle (42).

[0139] The lower surface of the guide (5) can be in contact with or separated from the movable mold (32).

[0140] The upper surface of the guide (5) may be a fixed surface fixed to the guide holder (64).

[0141] The injection molding machine facing surface (52) may be one of the multiple peripheral surfaces of the guide (5).

[0142] The movable mold facing surface (53) may be the lower surface of the guide (5).

[0143] A guide heater (54) that heats the guide passage (51) may be installed in the guide (5). The guide heater (54) can heat the material passing through the guide passage (51) so that the molten resin, which is the material, is not cooled while passing through the guide (5).

[0144] The elevator mechanism (6) can elevate the guide (5).

[0145] The lifting mechanism (6) may include a lifting guide (61); an upper body (62) installed on the lifting guide (61); a pressure cylinder (63) installed on the upper body (62); and a guide holder (64) that is raised and lowered by the pressure cylinder (63).

[0146] An elevation guide (61) can be placed on the rotary station (1). The elevation guide (61) can be supported on the rotary station (1). A pair of elevation guides (61) can be placed in the vertical direction on the rotary station (1). A pair of elevation guides (61) can be spaced apart horizontally.

[0147] The upper body (62) can be placed horizontally on the upper part of the lifting guide (61).

[0148] The pressurized cylinder (63) can be supported on the upper body (62) and can be spaced apart from the upper surface of the rotary station (1) in the vertical direction (Z).

[0149] The guide holder (64) can be raised and lowered in the up-and-down direction (Z) by the pressure cylinder (63).

[0150] A pair of guide holes guided by a pair of lifting guides (61) may be formed in the guide holder (64). Each of the pair of guide holes may be formed to be open in the vertical direction (Z) of the guide holder (64).

[0151] The guide holder (64) may be a guide fastening plate to which the guide (5) is fastened. The lower surface of the guide holder (64) may be a guide fastening surface to which the guide (5) is fastened. The guide (5) may be hung on the guide holder (64).

[0152] When the guide holder (64) is lowered, the guide (5) can press the pressure roller (32) downward, and when the guide holder (64) is raised, the guide (5) can be spaced apart from the pressure roller (32) in the vertical direction (Z).

[0153] The lifting mechanism (6) can maintain the guide (5) at the second height (h2) while the rotary (2) rotates, and when any one of the plurality of molds (3) has completed moving to the injection area (A1), the guide (5) can be lowered to the first height (H1).

[0154] The extraction mechanism (7) can elevate the movable mold (32) of the mold (3) located in the extraction area (A3) among multiple molds (3).

[0155] The ejection mechanism (7) can elevate the movable mold (32) among the molds (3) located in the ejection area (A3) to open the mold (3) located in the ejection area (A3).

[0156] After the extraction device (7) opens the mold (3), a machine such as a robot can extract a product (i.e., a molded product or a finished product) from the opened mold (3).

[0157] The extraction mechanism (7) may include a frame (71); an extraction cylinder (72) supported on the frame (71); an elevating body (73) that is elevated by the extraction cylinder (72); and a magnet (74) that is disposed on the elevating body (73) and is magnetically attached to and detached from the movable mold (32).

[0158] The frame (71) can be placed in the rotary station (1). The frame (71) can be positioned around the rotary station (1).

[0159] The frame (71) may include a vertical frame (71A) and a horizontal frame (71B).

[0160] The vertical frame (71A) can be elongated in the vertical direction (Z).

[0161] The horizontal frame (71B) can extend horizontally from the upper portion of the vertical frame (71A).

[0162] An elevation guide (71C) can be placed on the frame (71).

[0163] The lifting guide (71C) can extend downward from the horizontal frame (71B). A pair of lifting guides (71C) can be arranged on the horizontal frame (71B). The pair of lifting guides (71C) can be spaced apart horizontally.

[0164] The ejection cylinder (72) can lower the lifting body (73) when a plurality of other molds (3) have been moved to the ejection area (A3), and the magnet (74) arranged on the ejection body (73) can be magnetically fixed to the movable mold (32) of the mold (3) located in the ejection area (A3).

[0165] The extraction cylinder (72) can raise the lifting body (73) when the magnet (74) is magnetically fixed to the movable mold (32) of the mold (3) located in the extraction area (A3).

[0166] The lifting body (73) can be raised and lowered by the ejection cylinder (72), and the magnet (74) can be pressed into the movable mold (32) among the molds (3).

[0167] The lower surface of the lifting body (73) may be a magnet attachment surface to which a magnet (74) is attached.

[0168] The magnet (74) can be placed on the lower surface of the lifting body (73), and when it is raised by the lifting body (73) while being magnetically fixed to the movable mold (32) among the molds (3), the movable mold (32) can be raised. At this time, the movable mold (32) can be mold-opened with the fixed mold (31).

[0169] The magnet (74) can be lowered to press the movable mold (32) downward and close the movable mold (32) with the fixed mold (31).

[0170] When the rotary (2) rotates while the movable mold (32) is closed with the fixed mold (31), the movable mold (32) moves horizontally together with the fixed mold (31), and the movable mold (32) can be separated from the magnet (74).

[0171] The injection molding machine may further include a shelf (9) and a height adjustment mechanism (10).

[0172] The shelf (9) can be spaced apart from the rotary (2). The shelf (9) can be spaced apart from the rotary station (1). The shelf (9) can be spaced apart from the rotary station (1) in the forward and backward direction (X).

[0173] The shelf (9) can be connected to the rotary station (1) and the bridge (91).

[0174] A control device (92) such as a control board can be placed on the shelf (9).

[0175] The height adjustment mechanism (10) can be placed on the shelf (9). The height adjustment mechanism (10) can be placed on the upper surface of the shelf (9). The height adjustment mechanism (10) can support the injection molding machine (4) and the advance / retreat mechanism (8).

[0176] The height adjustment mechanism (10) may include a fixed plate (101), an elevation plate (102) positioned on the upper side of the fixed plate (101), and a plurality of height adjustment members (103, 104) that support the elevation plate (102) and adjust the height of the elevation plate (102).

[0177] The plurality of height adjustment members (103, 104) may include a lifting bolt (103) rotatably arranged on a fixed plate (101) and a nut (104) that is raised and lowered along the outer surface of the lifting bar (103) and fixed to the lifting plate (102).

[0178] When the worker rotates the lifting bolt (103), the lifting plate (102) can be raised and lowered, and the height of the injection molding machine (4) and the advance / retreat mechanism (8) can be adjusted.

[0179] The multi-injection molding machine may further include a slip ring (110).

[0180] The slip ring (110) may further include an outer slip ring (112) that rotates together with the rotary (2); and an inner slip ring (114) arranged inside the outer slip ring (112).

[0181] The outer slip ring (112) can be fixed to the rotary (2).

[0182] The outer slip ring (112) may be connected to a cooling water inlet pipe (not shown) that guides cooling water to the mold (3) and a cooling water outlet pipe (not shown) that discharges cooling water that has cooled the mold (3).

[0183] The cooling water inlet pipe and the cooling water outlet pipe can correspond 1:1 with the mold (3).

[0184] The inner slip ring (114) can be positioned fixedly in the rotary station (1).

[0185] The size of the inner slip ring (114) may be smaller than the size of the outer slip ring (112).

[0186] A space (116) can be formed between the outer slip ring (112) and the inner slip ring (114).

[0187] The space (116) may be used as a cooling path through which cooling water passes to cool the mold (3) or may be a passage through which an electric wire (not shown) passes.

[0188] In the space (116), a coolant inlet channel and a coolant outlet channel can be partitioned by a barrier.

[0189] Figure 4 is a diagram illustrating a guide according to the present embodiment.

[0190] The guide (5) may include an upper plate (55); and a lower plate (56).

[0191] The upper plater (55) can form the upper surface and the circumferential surface of the guide (5).

[0192] The upper plater (55) can be fixed to the guide holder (64).

[0193] An upper guide groove (55a) that guides the material in a horizontal direction (X) can be formed on the lower surface of the upper plate (55).

[0194] The entrance of the upper guide groove (55a) can be formed on the surface facing the injection molding machine (52).

[0195] The lower plate (56) can form the lower surface and the peripheral surface of the guide (5).

[0196] The upper surface of the lower plate (56) can be fixed to the lower surface of the upper plater (55).

[0197] The upper surface of the lower plate (56) can be bonded to the lower surface of the upper plate (56). The upper surface of the lower plate (56) can be diffusion bonded to the lower surface of the upper plate (56).

[0198] When the guide (5) is lowered by the lifting mechanism (6), the lower plate (56) can come into contact with the upper surface of the movable mold (32) and press the movable mold (32) downward.

[0199] A lower guide groove (56a) that guides the material in a horizontal direction (X) can be formed on the upper surface of the lower plate (56).

[0200] The entrance of the lower guide groove (56a) can be formed on the surface facing the injection molding machine (52).

[0201] The lower guide groove (56a) may be opposed to the upper guide groove (55a). The lower guide groove (56a) may be opposed to the upper guide groove (55a) in the vertical direction (Z).

[0202] The upper guide groove (55a) and the lower guide groove (56a) can form an entrance passage among the guide passages (51).

[0203] The upper guide groove (55a) and the lower guide groove (56b) can be opened in the horizontal direction (X).

[0204] The guide heater (54, see FIG. 3) can heat the upper guide groove (55a) and the lower guide groove (56a) around the upper guide groove (55a) and around the lower guide groove (56a).

[0205] A guide passage (56b) may be formed through the lower plate (56). The guide passage (56b) may be opened in the vertical direction (Z). The guide passage (56b) may be formed through the lower plate (56) in the vertical direction (Z).

[0206] The guide passage (56b) can guide the material guided to the upper guide groove (55a) and the lower guide groove (56a) to the injection passage (34).

[0207] The guide passage (56b) can constitute an exit passage among the guide passages (51).

[0208] The entrance of the guide passage (56b) can be connected to at least one of the upper guide groove (55a) and the lower guide groove (56a).

[0209] The exit of the guide passage (56b) may be formed on the movable mold facing surface (53). The exit of the guide passage (56b) may be the exit (51b) of the guide passage (51). The exit of the guide passage (56b) may be formed at the bottom of the lower plate (56).

[0210] FIG. 5 is a diagram showing a movable mold according to the present embodiment, FIG. 6 is a diagram showing an injection passage of the movable mold according to the present embodiment when it is closed, FIG. 7 is a diagram showing an injection passage of the movable mold according to the present embodiment when it is open, and FIG. 8 is a plan view of a spring sheet according to the present embodiment.

[0211] The injection molding machine may further include a one-way valve (35) to prevent the material from flowing back.

[0212] A one-way valve (35) can be placed in the injection passage (34).

[0213] The one-way valve (35) can be opened by the material supplied to the guide (5).

[0214] After the material passes through the guide passage (56b) formed in the guide (5), it can be supplied to the one-way valve (35), and the one-way valve (35) can be opened by the material.

[0215] If material is not supplied from the guide (5) to the one-way valve (35), the one-way valve (35) can be closed.

[0216] A one-way valve (35) may include a valve body (36) having an upper opening (36a) and a lower opening (36b) formed therein; a valve body (37) that is arranged to be raised and lowered in the valve body (36) and opens and closes the upper opening (36a); a spring (38) that elastically supports the valve body (37); and a spring seat (39) that supports the spring (38) inside the valve body (36) and has an inner opening (39a) formed therein through which a material passes.

[0217] The valve body (36) can be placed inside the injection passage (34) of the movable mold (32).

[0218] The upper part of the valve body (36) can be placed on the upper part of the movable mold (32).

[0219] The lower part of the valve body (36) can be placed inside the movable mold (32).

[0220] The valve body (37) may include an upper valve (37a) seated on the upper end of a spring (38) and a lower shaft (37b) protruding from the lower end of the upper valve (37a).

[0221] The upper valve (37a) can open and close the upper hole (36a).

[0222] An example of a spring (38) may be a coil spring.

[0223] The upper end of the spring (38) can be in contact with the lower surface of the upper valve (37a).

[0224] The spring (38) can surround the lower shaft (37b).

[0225] The lower end of the spring (38) can be in contact with the spring seat (39).

[0226] The spring sheet (39) may include an outer sheet (39b) that surrounds the spring (38) from the outside of the spring (38), and an inner sheet (39c) that protrudes from the inner surface of the outer sheet (39b) and on which the lower end of the spring (38) is seated.

[0227] The outer sheet (39b) may have a hollow shape with the interior open in the vertical direction.

[0228] The outer diameter of the outer seat (39b) may be smaller than the inner diameter of the valve body (36).

[0229] The upper part of the outer seat (39b) can come into contact with the inside of the valve body (36).

[0230] A plurality of inner sheets (39c) can be formed. The plurality of inner sheets (39c) can be spaced apart in the circumferential direction of the spring sheet (39).

[0231] The inner hole (39a) can be formed inside the outer sheet (39b). The inner hole (39a) can be formed between adjacent inner sheets (39c).

[0232] The material passing through the guide passage (51) of the guide (5) can flow into the upper hole (36a) of the valve body (36), the valve body (37) can be lowered by being pushed by the material, and the material can flow between the valve body (36) and the valve body (37) through the gap between the upper hole (36a) and the valve body (37).

[0233] The material inside the valve body (36) can pass through the inner hole (39a) of the spring seat (39), then the lower hole (36b) of the valve body (36), and then pass through the injection passage (34) of the movable mold (32), and then be filled into the cavity (33, see FIG. 3).

[0234] When the material is completely filled into the cavity (33), the spring (38) can raise the valve body (37) by the restoring force, and the valve body (37) can block the upper hole (36a) of the valve body (36), and the material flowing into the injection passage (34) is blocked by the valve body (37) and cannot flow back upward.

[0235] The injection molding machine may further include a cylinder (40a) arranged on an upper plate (55) or a lower plate (56); and an elevating pin (40b) that is lowered into the upper bore or raised above the upper bore by the cylinder (40a).

[0236] When the lifting pin (40b) is lowered, the outer circumference of the lifting pin (40b) can be spaced apart from the guide passage (56b) in the horizontal direction (X).

[0237] Before the injection molding machine (4) supplies the material, the cylinder (40a) can be controlled in an upward mode, and the lifting pin (40b) can be raised to open the upper hole (36a) of the one-way valve (35).

[0238] When the injection molding machine (4) completes material supply, the cylinder (40a) can be controlled in a descending mode, and the lifting pin (40b) can be lowered to seal the upper hole (36a) of the one-way valve (35).

[0239] Figure 9 is a control block diagram of an injection molding machine according to the present embodiment.

[0240] The injection molding machine may further include an input interface (93) and a processor (94).

[0241] The input interface (93) may include buttons, switches, or a touch screen that allow an operator to input various commands for the injection molding machine.

[0242] The processor (94) can control the overall operation of the injection molding machine. The processor (94) can configure a control device (92) placed on the shelf (9).

[0243] The processor (94) can control the rotary station (1), the injection molding machine (4), the guide (5), the lifting mechanism (6), the ejection mechanism (7), and the advance / retreat mechanism (8).

[0244] The processor (94) can control the rotation drive source (12) of the rotary station (1).

[0245] The processor (94) can control the main heater (43) of the injection molding machine (4). The processor (94) can control the injection motor (47).

[0246] The processor (94) can control the guide heater (54) of the guide (5).

[0247] The processor (94) can control the lifting cylinder (63) of the lifting mechanism (6).

[0248] The processor (94) can control the extraction cylinder (72) of the extraction mechanism (7).

[0249] The pro sensor (94) can control the advance / retreat drive source (82) of the advance / retreat mechanism (8).

[0250] The pro sensor (94) can control the cylinder (40a) in either an ascending or descending mode.

[0251] Below, the operation of the injection molding machine is described.

[0252] The processor (94) can sequentially perform an injection process, a first rotation process, a cooling process, a second rotation process, an extraction process, and a third rotation process, and the injection process, the first rotation process, the cooling process, the second rotation process, the extraction process, and the third rotation process can constitute one cycle for molding a product (molded product or finished product).

[0253] The injection process, cooling process, and extraction process can each be performed during the first hour.

[0254] Each of the first rotation process, the second rotation process, and the third rotation process can be performed for a second time.

[0255] The first hour may be longer than the second hour.

[0256] During the injection process, the processor (94) moves the injection molding machine (4) forward, and when the injection molding machine (4) moves forward, the nozzle (42) of the injection molding machine (4) can be connected to the guide passage (51) of the guide (5). After the nozzle (42) is connected to the guide passage (51) of the guide (5), the processor (94) can control the injection molding machine (4) to fill the material into the guide (5). The material molded in the injection molding machine (4) can pass through the guide passage (51) of the guide (5), and then pass through the injection passage (34) of the movable mold (32) located in the injection area (A1), and be filled into the cavity (33).

[0257] The processor (94) can pressurize the mold (3) for a set time (e.g., 4 seconds), and after the set time has elapsed, the processor (94) can retract the injection molding machine (4). When the injection molding machine (4) retracts, the nozzle (42) of the injection molding machine (4) can be separated from the guide passage (51) of the guide (5), and the nozzle (42) can be spaced apart from the guide (5).

[0258] The processor (94) can perform a first rotation process after the injection process. The processor (94) can drive the rotation drive source (12) for a rotation setting time, and the rotation drive source (12) can rotate the rotary (2) at a setting angle (e.g., 120°), and the mold (3) located in the injection area (A1) can be moved to the cooling area (A2).

[0259] The mold (3) in the cooling area (A2) is maintained for a set cooling time, and the material within the mold (3) is solidified to become a product (molded product or finished product). When the set cooling time has elapsed, the cooling process can be completed.

[0260] The processor (94) can perform a second rotation process after the cooling setting time. The processor (94) can drive the rotation drive source (12) for the rotation setting time, and the rotation drive source (12) can rotate the rotary (2) at a setting angle (e.g., 120°), and the mold (3) located in the cooling area (A2) can be moved to the extraction area (A3).

[0261] When the mold (3) in the cooling area (A2) is moved to the extraction area (A3), the processor (94) can start the extraction process.

[0262] The processor (94) can lower the magnet (74) during the extraction process to fasten the magnet (74) to the movable mold (32), and when the fastening with the movable mold (32) is completed, the magnet (74) can be raised. When the magnet (74) is raised, the movable mold (32) located in the extraction area (A3) can be raised, and the mold (3) located in the extraction area (A3) can be opened.

[0263] A take-out machine such as a robot can take out a product (molded product or finished product) that has been molded in a mold (3) to the outside of the mold (3).

[0264] After the product extraction is completed, the processor (94) can lower the magnet (74) to place the raised movable mold (32) back on the fixed mold (31), and the mold (3) can be closed. After the mold (3) is closed, the magnet (74) can be separated from the mold (3).

[0265] After the mold (3) is closed, the processor (94) can perform the third rotation process. The processor (94) can drive the rotation drive source (12) for a rotation setting time, and the rotation drive source (12) can rotate the rotary (2) at a setting angle (e.g., 120°), and the mold (3) in the ejection area (A3) can be moved back to the injection area (A1).

[0266] The processor (94) can repeat one cycle consisting of an injection process, a first rotation process, a cooling process, a second rotation process, an extraction process, and a third rotation process.

[0267] The above description is merely an example of the technical idea of ​​the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention.

[0268] Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention but to explain it, and the scope of the technical idea of ​​the present invention is not limited by these embodiments.

[0269] The scope of protection of the present invention should be interpreted by the claims below, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the rights of the present invention.

Claims

1. A mold in which a cavity is formed in at least one of a fixed mold and a movable mold, and an injection passage through which a material passes is formed in the movable mold; An injection molding machine that shapes and supplies materials; A guide for guiding the material supplied from the injection molding machine into the injection passage; and Including an elevator mechanism for elevating the above guide, When the above guide is lowered by the above lifting mechanism, it presses the above movable mold from the upper side of the above movable mold, The above guide is upper plate; and The upper surface comprises a lower plate joined to the lower surface of the upper plate, An upper guide groove is formed on the lower surface of the upper plate to guide the material in a horizontal direction, On the upper surface of the lower plate, a lower guide groove for guiding the material in a horizontal direction is opposite to the upper guide groove, An injection molding machine in which a guide passage is formed through the upper guide groove and the lower guide groove to guide the material guided through the upper guide groove to the injection passage.

2. In paragraph 1, An injection molding machine in which the upper surface of the lower plate is diffusion bonded to the lower surface of the upper plate.

3. In paragraph 1, The above movable mold is placed on the upper surface of the above fixed mold, An injection molding machine in which the lower plate comes into contact with the upper surface of the movable mold when the guide is lowered by the lifting mechanism.

4. In paragraph 1, An injection molding machine further comprising a one-way valve arranged in the above injection passage and opened by the material.

5. In paragraph 4, The above one-way valve comprises a valve body having an upper hole and a lower hole formed therein; A valve body that is arranged to be elevated on the above valve body and opens and closes the upper hole; a spring that elastically supports the valve body; and An injection molding machine comprising a spring seat having an inner hole formed therein to support a spring and through which material passes inside the valve body.

6. In paragraph 5, A cylinder placed on the upper plate or lower plate; An injection molding machine further comprising a lifting pin that is lowered into the upper bore or raised upwards of the upper bore by the cylinder.

7. In paragraph 6, An injection molding machine in which the outer circumference of the above lifting pin is spaced horizontally from the above guide passage.

8. In paragraph 1, An injection molding machine further comprising an advancing / retracting mechanism for advancing the injection molding machine along the guide or for retracting the injection molding machine from the guide.

9. In paragraph 1, The above guide is The injection molding machine facing surface facing the above injection molding machine, Including a movable mold facing surface facing the above movable mold, The entrance of the upper guide groove and the entrance of the lower guide groove are formed on the opposite surface of the injection molding machine, An injection molding machine in which the exit of the above guide passage is formed on the surface facing the above movable mold.

10. In paragraph 9, The above guide includes a lower surface, an upper surface, and multiple peripheral surfaces, The above injection molding machine facing surface is one of the plurality of peripheral surfaces, The above movable mold facing surface is the injection molding machine of the above lower surface.

11. In paragraph 1, The upper guide groove and lower guide groove are open in the horizontal direction, The above guide passage is an injection molding machine that is open in a vertical direction.

12. In paragraph 1, An injection molding machine having a guide heater installed in the above guide for heating the upper guide groove and the lower guide groove.

13. In paragraph 1, The above elevator mechanism Elevator guide; Upper body installed on the above lifting guide; A pressurized cylinder installed in the upper body; It includes a guide holder that is elevated by the above pressurized cylinder, The above guide is an injection molding machine placed in the above guide holder.

14. In paragraph 1, A rotary station having a rotating drive unit; and A rotary is disposed above the rotary station and is rotated by the rotary driving source, An injection molding machine in which a plurality of molds are provided, and the plurality of molds are spaced apart from each other on the rotary.

15. In paragraph 14, The above fixed mold is an injection molding machine fixed to the upper surface of the above rotary.

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