CN210211256U - Molding die and molding apparatus - Google Patents

Abstract

A mold and a molding apparatus for molding contribute to shortening a molding cycle and improving production efficiency. The utility model discloses a mould is used in shaping includes the flow path for the cooling, and this flow path for the cooling supplies the fluid circulation of cooling usefulness, and has the edge the flow path portion that the surface of shaping chamber extends, wherein, the flow path for the cooling still includes water well portion, water well portion with flow path portion intercommunication, and follow flow path portion court one side at shaping chamber place extends, water well portion has inflow portion and outflow portion, the inflow portion with the adjacent setting of mode of outflow with establishing ties each other, and, in the inflow portion the fluid is towards being close the direction of shaping chamber flows, and in the outflow portion the fluid is towards keeping away from the direction of shaping chamber flows.

Description

Molding die and molding apparatus

Technical Field

The present invention relates to a molding die and a molding apparatus including the molding die, and more particularly to a molding die having a cooling flow path and a molding apparatus including the molding die.

Background

In the present refrigerator, an ice maker for making ice cubes is often provided.

The ice maker may include a frame portion and an ice tray rotatably supported by the frame portion. Specifically, as shown in fig. 13, the frame portion WX has a main body portion W1X and a bottom portion W2X, in which the main body portion W1X is a rectangular tube shape whose axis extends in the up-down direction in the drawing as a whole, and the bottom portion W2X partially shields an opening on one side in the axial direction (i.e., the up-down direction in the drawing) of the main body portion W1X; the main body portion W1X includes a first sidewall W11X, a third sidewall W13X facing the first sidewall W11X in a first direction orthogonal to the vertical direction in the drawing, and a second sidewall W12X and a fourth sidewall W14X connecting the first sidewall W11X and the third sidewall 13X together and facing in a second direction orthogonal to the vertical direction in the drawing and the first direction, the first sidewall W11X and the third sidewall W13X each include a first bearing portion and a second bearing portion, the first bearing portion and the second bearing portion each include a cylindrical boss portion whose axial direction coincides with the first direction, and a plurality of plate-shaped ribs adjacent to the boss portion and extending in the first direction; the bottom W2X connects the second, third, and fourth sidewalls W12X, W13X, W14X together. On the other hand, although not shown, the ice tray includes a tray-shaped ice tray body and shaft portions protruding from both sides of the ice tray body, and the ice tray is rotatably supported by the frame portion by the shaft portions on both sides being supported by the first bearing portion of the first side wall W11X and the second bearing portion of the third side wall W13X, respectively.

Conventionally, in the production of the frame portion of the ice maker, there is a case where a molding die MX shown in fig. 13, which includes a first die M1X and a second die M2X for closing and opening the die in the vertical direction in the drawing, is used; the first mold M1X has a protruding portion, and the second mold M2X has a recessed portion, the protruding portion being inserted inside the recessed portion in the up-down direction in the drawing to enclose a molding cavity corresponding to the shape of the frame portion WX together with the recessed portion; further, in the first mold M1X, a first channel portion 121X through which cooling water or the like flows and which extends in a plane orthogonal to the vertical direction in the drawing is formed at a position lower than the molding cavity in the drawing, and in the second mold M2X, a second channel portion 122X through which cooling water or the like flows and which extends in a plane orthogonal to the vertical direction in the drawing is formed at a position upper than the molding cavity in the drawing; further, although not shown, a flow path portion through which cooling water or the like flows is provided on the outer peripheral side of the molding cavity.

In addition, in manufacturing the frame portion of the ice maker, a bearing portion molding portion may be detachably attached to the first mold M1X and/or the second mold M2X, and the first bearing portion and the second bearing portion of the frame portion WX may be molded by the bearing portion molding portion.

However, in the case of manufacturing the frame portion WX of the ice maker by using the molding die MX shown in fig. 13, although it is easy to rapidly cool the outer wall surface, the ceiling surface, and the bottom wall surface of the molded frame portion WX by the flow path portion on the outer peripheral side of the molding cavity, the first flow path portion 121X, the second flow path portion 122X, and the like, it is difficult to rapidly cool the inner portion (the inner wall surface portion of the rectangular tubular frame portion) of the molded frame portion WX, which leads to a reduction in production efficiency and a longer molding cycle; further, when the frame portion WX is molded by pressing an injection material into the molding cavity of the molding die MX by the molding machine, the material at the nozzle of the molding machine is likely to be cooled due to a long waiting time after one-shot injection, and the cold and hot materials are likely to be mixed and injected into the molding die, thereby causing defects on the surface of the product.

In addition, conventionally, when the bearing portion molding portion is assembled in the molding die MX shown in fig. 13 to mold the first bearing portion and the second bearing portion of the frame portion WX, as shown in fig. 14, a thick portion is often formed at the intersection portion JX of the plurality of plate-shaped ribs in the molded bearing portion, and the cooling rate of the intersection portion JX is lowered, which affects the cooling efficiency of the entire frame portion WX.

SUMMERY OF THE UTILITY MODEL

The utility model discloses just accomplish in order to solve above-mentioned problem, aim at provides a mould and former for the shaping helps shortening the shaping cycle, improves production efficiency.

In order to achieve the above object, the present invention provides a mold for molding, including a molding cavity and a flow path for cooling, which is used for flowing a fluid for cooling and has a flow path portion extending along an outer surface of the molding cavity, wherein the flow path for cooling further includes a water well portion communicating with the flow path portion and extending from the flow path portion toward one side where the molding cavity is located, the water well portion has an inflow portion and an outflow portion, the inflow portion and the outflow portion are adjacently disposed in series with each other, and in the inflow portion the fluid flows in a direction approaching the molding cavity, and in the outflow portion the fluid flows in a direction away from the molding cavity.

Here, "extending along the outer surface of the molding cavity" means that the flow path portion extends along the outer surface of the three-dimensional space formed by the molding cavity when there is no hollow portion inside the molding cavity, and means that the flow path portion extends along the outer surface of the three-dimensional space formed by the molding cavity and the space surrounded by the molding cavity when there is a hollow portion inside the molding cavity (for example, when the molding cavity is cylindrical).

According to the mold of the present invention, the cooling passage includes the water well portion extending from the passage portion toward the molding cavity, so that the water well portion can be used to cool the molding cavity closer to the molding cavity, thereby improving the cooling efficiency of the molded product, shortening the molding cycle, and improving the production efficiency, compared with the conventional case where only the passage portion extending along the outer surface of the molding cavity is provided; the well part has an inflow part and an outflow part, the inflow part and the outflow part are adjacently arranged in series, the fluid flows in the inflow part in the direction close to the molding cavity, and the fluid flows in the outflow part in the direction far away from the molding cavity.

In the molding die of the present invention, it is preferable that the molding cavity has a cylindrical portion corresponding to a shape of a main body portion of a product to be molded, and the well portion extends from an outside of the cylindrical portion toward a space surrounded by the cylindrical portion.

Here, the "cylindrical portion" is not limited to the case where a closed ring is formed in the circumferential direction around the axis thereof, and includes the case where an open ring is formed in the circumferential direction around the axis thereof.

According to the utility model discloses a mould for shaping, well portion extends from the outside of tube-shape portion towards the space that tube-shape portion surrounded, consequently, utilizes well portion to cool off the difficult refrigerated internal face part of the main part of the product of shaping out easily to realize the holistic quick cooling of the product of shaping out, shorten the shaping cycle, improve production efficiency.

In the molding die of the present invention, it is preferable that the water well portion includes a first water well portion extending from one side of the cylindrical portion in the axial direction toward the other side with respect to the cylindrical portion.

In the molding die of the present invention, it is preferable that a plurality of the first well portions are provided in series with each other, and at least one of the first well portions extends to an inner side of the tubular portion.

According to the utility model discloses a mould for shaping, through setting up a plurality of first well portions, and make at least one first well portion extend to the inboard of tube-shape portion, can further improve the cooling efficiency of the internal face part of the main part of the product of shaping play to further shorten the shaping cycle, improve production efficiency.

In the molding die of the present invention, it is preferable that the water well portion includes a second water well portion extending from the other side of the cylindrical portion in the axial direction toward one side with respect to the cylindrical portion.

According to the utility model discloses a mould for shaping cools off through utilizing first well portion and second well portion from the ascending both sides of axis direction of tube-shape portion, cools off the product that the shaping goes out easily uniformly, avoids the surface of the product that the shaping goes out etc. to appear the flaw because of the stress local concentration that the cooling inequality caused.

Further, in the molding die of the present invention, it is preferable that the molding die further includes a first die and a second die which are closed and opened in an axial direction of the tubular portion, wherein the first die has a protruding portion, the second die has a recessed portion, and in a state where the first die and the second die are closed, the protruding portion is inserted into an inner side of the recessed portion in the axial direction of the tubular portion and surrounds the recessed portion to form the molding cavity, and in the first die, at least the protruding portion has the first water well portion, and in the second die, at least a portion constituting a bottom of the recessed portion has the second water well portion.

According to the mold for molding of the utility model, the first water well part of the protruding part is utilized to further improve the cooling efficiency of the inner wall surface part of the main body part of the molded product, thereby further shortening the molding period and improving the production efficiency; in addition, the first water well part of the protruding part and the second water well part of the recessed part are matched, so that the molded product is easily and uniformly cooled, and the surface of the molded product and the like are prevented from generating flaws and the like due to local stress concentration caused by uneven cooling.

Further, in the molding die of the present invention, it is preferable that a bearing portion molding portion for molding a bearing portion included in a product to be molded and having an axis direction perpendicular to an axis direction of the tubular portion is provided in the molding cavity, and the bearing portion molding portion is provided so as to make a wall thickness of the molded bearing portion uniform.

Here, the "thickness of the bearing portion" refers to the thickness of a bearing portion component (for example, the boss portion and the plate-shaped rib adjacent to the boss portion) as viewed in the axial direction of the bearing portion.

According to the utility model discloses a mould for shaping can avoid leading to the holistic cooling efficiency of finished product to descend because of the wall thickness of the bearing portion of shaping play is inhomogeneous.

In the molding die of the present invention, it is preferable that the plurality of well portions are provided in series with each other.

According to the utility model discloses a mould for shaping through setting up a plurality of well portions, can further improve the cooling efficiency of the product of shaping play to further shorten the shaping cycle, improve production efficiency.

In the molding die of the present invention, it is preferable that the shortest distance between the well portion and the molding cavity is 8mm to 20 mm.

According to the utility model discloses a mould for shaping through establishing the shortest distance between well portion and the shaping chamber into 8mm ~ 20mm, can avoid leading to the shaping to wear and tear easily because of the shortest distance between well portion and the shaping chamber is short excessively to can effectively ensure the cooling efficiency when utilizing the cooling of flowing through well portion to cool off with the fluid.

Further, in the molding die of the present invention, it is preferable that an auxiliary heat radiating member formed of a metal material be provided, the auxiliary heat radiating member being provided adjacent to the molding cavity.

According to the utility model discloses a mould for shaping sets up auxiliary heat radiation spare through the thick wall portion adjacent with the shaping chamber, cools off the product that the shaping was out evenly easily, avoids the surface of the product that the shaping was out etc. to appear the flaw because of the stress local concentration that the cooling inequality caused.

In the molding die of the present invention, it is preferable that the auxiliary heat sink is formed of beryllium copper, the molding cavity has a cylindrical portion corresponding to a shape of a body portion of a product to be molded, and at least a part of the auxiliary heat sink is provided in a space surrounded by the cylindrical portion.

According to the utility model discloses a mould for shaping, the cooling function of auxiliary heat dissipation spare is exert better easily, and further improves the cooling efficiency of the internal face part of the main part of the product that the shaping goes out easily to further shorten the shaping cycle, improve production efficiency.

In the molding die of the present invention, it is preferable that the cross-sectional area of the inflow portion and the cross-sectional area of the outflow portion are equal to each other.

According to the utility model discloses a mould for shaping makes cooling fluid flow in inflow portion and outflow portion evenly easily, consequently, cools off the product of shaping out evenly easily, avoids the surface of the product of shaping out etc. to appear the flaw because of the stress local concentration that the cooling inequality caused.

In the molding die of the present invention, it is preferable that the molding die has a hole constituting the well portion, and the hole is partitioned by a partition plate to form the inflow portion and the outflow portion.

According to the molding die of the present invention, for example, the inflow portion and the outflow portion can be easily formed by inserting the partition plate into the hole constituting the well portion.

In order to achieve the above object, the present invention also provides a mold for molding, which includes: the molding die described above; a mold temperature controller having a controller-side flow path and a reservoir tank for supplying a fluid for cooling to the controller-side flow path; and a connection pipe that connects the cooling flow path of the molding die and the controller-side flow path of the die temperature controller to form a circuit.

(effects of utility model)

According to the utility model, the cooling flow path comprises the water well part, and the water well part extends from the flow path part to one side of the molding cavity, so that compared with the prior art that only the flow path part extending along the outer surface of the molding cavity is arranged, the water well part can be utilized to cool at a position closer to the molding cavity, thereby improving the cooling efficiency of the molded product, shortening the molding period and improving the production efficiency; the well part has an inflow part and an outflow part, the inflow part and the outflow part are adjacently arranged in series, the fluid flows in the inflow part in the direction close to the molding cavity, and the fluid flows in the outflow part in the direction far away from the molding cavity.

Drawings

Fig. 1 is a perspective view schematically showing a molding apparatus according to an embodiment of the present invention.

Fig. 2 is a perspective view schematically showing a molding die according to an embodiment of the present invention.

Fig. 3 is a schematic perspective view showing a molding cavity and a cooling flow path of a molding die according to an embodiment of the present invention.

Fig. 4 is a perspective view schematically showing a flow state of the cooling fluid in the first flow path including the first well of the molding die according to the embodiment of the present invention.

Fig. 5 is a perspective view schematically showing a flow state of the cooling fluid in the second flow path including the second well of the molding die according to the embodiment of the present invention.

Fig. 6 is a perspective view schematically showing a portion of the first flow path including the first flow path portion and the first well, a portion of the second flow path including the second flow path portion and the second well, and a molded product of the molding die according to the embodiment of the present invention.

Fig. 7 is a cross-sectional perspective view schematically showing a portion of the first flow path of the molding die according to the embodiment of the present invention, including the first flow path portion and the first water well, a portion of the second flow path, including the second flow path portion and the second water well, and a molded product.

Fig. 8 is a perspective view schematically showing a portion of the first flow path of the molding die according to the embodiment of the present invention, including the first flow path portion and the first water well, and a molded product.

Fig. 9 is a partial sectional view schematically showing a positional relationship between a first water well of a molding die and a molded die according to an embodiment of the present invention.

Fig. 10 is a partial perspective view schematically showing a product molded by the molding die according to the embodiment of the present invention.

Fig. 11 is a partial perspective view schematically showing a molding die according to a modification of the present invention.

Fig. 12 is a perspective view schematically showing an auxiliary heat sink in a molding die according to a modification of the present invention.

Fig. 13 is a partial perspective view schematically showing a conventional molding die.

Fig. 14 is a partial perspective view schematically showing a frame portion molded by a conventional molding die.

(symbol description)

1 Molding apparatus

10 mold for molding

11 forming cavity

111 cylindrical part

112 plate-like part

12 flow path for cooling

121 first flow path

1211 first well part

12111 inflow part

12112 outflow part

1212 first channel part

122 second flow path

1221 second Water well part

12211 inflow part

12212 outflow part

1222 second flow path part

131 auxiliary heat sink

132 auxiliary radiator

20 mould temperature controller

30 connecting piping

40 flow meter

RK1 Inlet of first flow Path

CK1 outlet of first flow path

RK2 second flow Path Inlet

CK2 second flow path outlet

HL hole

PT baffle

M1 first mould

M2 second die

M3 base

M4 cover part

W product to be molded

W1 Main body part

W11 first side wall

W111 axle sleeve part

W112 plate-like rib

W12 second side wall

W13 third side wall

W14 fourth side wall

Bottom of W2

Detailed Description

Next, a molding apparatus according to an embodiment of the present invention will be described with reference to fig. 1 to 10, in which fig. 1 is a perspective view schematically showing the molding apparatus according to the embodiment of the present invention, fig. 2 is a perspective view schematically showing a molding die according to the embodiment of the present invention, fig. 3 is a schematic perspective view showing a molding cavity and a cooling flow path of the molding die according to the embodiment of the present invention taken out, fig. 4 is a perspective view schematically showing a flow state of a cooling fluid in a first flow path including a first well of the molding die according to the embodiment of the present invention, fig. 5 is a perspective view schematically showing a flow state of a cooling fluid in a second flow path including a second well of the molding die according to the embodiment of the present invention, fig. 6 is a perspective view schematically showing a portion including the first flow path portion and the first well of the molding die according to the embodiment of the present invention, Fig. 7 is a sectional perspective view schematically showing a portion of a first flow path of a molding die according to an embodiment of the present invention, which includes a first flow path portion and a first well, a portion of a second flow path including a second flow path portion and a second well, and a molded product, fig. 8 is a perspective view schematically showing a portion of a first flow path of a molding die according to an embodiment of the present invention, which includes a first flow path portion and a first well, and a molded product, fig. 9 is a partial sectional view schematically showing a positional relationship between the first flow path portion and the molded die of a molding die according to an embodiment of the present invention, and fig. 10 is a partial perspective view schematically showing a product molded by using a molding die according to an embodiment of the present invention.

Here, for convenience of explanation, three directions orthogonal to each other are set as an X direction, a Y direction, and a Z direction, and one side of the X direction is set as X1, the other side of the X direction is set as X2, one side of the Y direction is set as Y1, the other side of the Y direction is set as Y2, one side of the Z direction is set as Z1, and the other side of the Z direction is set as Z2, and the Z direction coincides with the actual up-down direction, and the Z1 direction corresponds to the actual up direction.

(integral Structure of Molding apparatus)

As shown in fig. 1, the molding apparatus 1 includes: a molding die 10; a mold temperature controller 20, the mold temperature controller 20 having a controller-side flow path (not shown) and a reservoir tank (not shown) for supplying a fluid for cooling (for example, but not limited to, water) to the controller-side flow path; and a connection pipe 30, wherein the connection pipe 30 connects the cooling flow path of the molding die 10 and the controller-side flow path of the die temperature controller 20 to form a circuit.

Here, the flow meter 40 is provided in the connection pipe 30, and when the flow rate of the fluid flowing through the connection pipe 30 measured by the flow meter 40 does not satisfy the requirement, it is conceivable to replace the mold temperature controller 20 or perform a process such as cleaning of the flow path or the like.

(Structure of mold temperature controller)

As described above, the mold temperature controller 20 includes the controller-side flow path (not shown) and the reservoir tank (not shown) that supplies the fluid for cooling to the controller-side flow path.

Here, although not shown, the mold temperature controller 20 further includes a pump for applying power to the fluid flowing through the controller-side flow path, a heater for heating the fluid, a cooler for cooling the fluid, a temperature sensor, a controller, and the like.

(Structure of Molding die)

As shown in fig. 2 to 5, the molding die 10 includes a molding cavity 11 and a cooling passage 12, the cooling passage 12 being in communication with a cooling fluid and having a passage portion extending along an outer surface of the molding cavity 11; as shown in fig. 6 and 7, the cooling passage 12 further includes a water well portion that communicates with the passage and extends from the passage toward the molding cavity 11; also, as shown in fig. 6 and 7, the water well portion has inflow portions 12111, 12211 and outflow portions 12112, 12212, the inflow portions 12111, 12211 and outflow portions 12112, 12212 being disposed adjacent to each other in series, and the fluid flows in the inflow portions 12111, 12211 in a direction approaching the molding cavity 11 and in the outflow portions 12112, 12212 in a direction away from the molding cavity 11.

Here, as shown in fig. 6 to 10, the product W to be molded is a frame portion for an ice maker. Specifically, the product W to be molded is in a rectangular parallelepiped shape as a whole, and has a cylindrical main body portion W1 and a plate-like bottom portion W2, in which the main body portion W1 is in a substantially rectangular cylindrical shape as a whole with an axis extending in the Z direction, and the bottom portion W2 is in a plate shape with a thickness direction coinciding with the Z direction as a whole, and covers a part of an opening on the Z1 side in the Z direction of the main body portion W1. Also, the main body portion W1 includes a first sidewall W11, a third sidewall W13 opposite to the first sidewall W11 in the X direction, and third and fourth sidewalls W13 and W14 connecting the first and third sidewalls W11 and W13 together and opposite in the Y direction; wherein the first side wall W11 has a thickness direction coinciding with the X direction, the first side wall W11 has a first bearing portion having a cylindrical boss portion W111 whose axis direction coincides with the X direction and a plurality of plate-like ribs W112 adjacent to the boss portion W111 and extending in the X direction, the plurality of plate-like ribs W112 includes a plurality of first plate-like ribs W1121 whose thickness direction coincides with the Z direction and being parallel to each other, a plurality of second plate-like ribs W1122 whose thickness direction coincides with the Y direction and being parallel to each other, and a plurality of third plate-like ribs W1123 whose thickness direction is inclined with respect to the Z direction (Y direction), a part of the plurality of first plate-like ribs W1121, a part of the plurality of second plate-like ribs W, and the third plate-like ribs W1123 extend radially from the boss portion W111, the thickness directions of the second side wall W12 and the fourth side wall W14 coincide with the Y direction, and the fourth side wall W14 has a notch portion, the thickness direction of the third side wall W13 coincides with the X direction, the third sidewall W13 may be formed in the same shape as the first sidewall W11. The bottom W2 is connected to the X2-direction side portion of the second side wall W12, the X2-direction side portion of the fourth side wall W14, and the third side wall W13.

In correspondence with the product to be molded W, as shown in fig. 4 to 7, the molding cavity 11 has a cylindrical portion 111 corresponding to the shape of the main body portion W1 of the product to be molded W and having an axis direction coinciding with the Z direction, and the molding cavity 11 has a plate-like portion 112 corresponding to the shape and position of the bottom portion W2 of the product to be molded W and having a thickness direction coinciding with the Z direction.

In the present embodiment, as shown in fig. 3 to 7, the cooling passage 12 includes a first passage 121 and a second passage 122 which are independent of each other, the first passage 121 having an inlet RK1 and an outlet CK1 connected to the connection pipe 30, respectively, the second passage 122 having an inlet RK2 and an outlet CK2 connected to the connection pipe 30, respectively, and the entire second passage 122 being located on the Z1 direction side in the Z direction with respect to the first passage 121. Specifically, as shown in fig. 4 and 7, the first flow path 121 includes a first flow path portion 1212 and a first water well portion 1211, the first flow path portion 1212 extends along an outer surface of the molding cavity 11 on the Z2 direction side (in the illustrated example, extends substantially in a plane perpendicular to the Z direction), the first water well portion 1211 is provided in plurality in series with each other, the plurality of first water well portions 1211 extend from the first flow path portion 1212 in the Z direction and have an inflow portion 12111 and an outflow portion 12112, respectively, wherein the inflow portion 12111 and the outflow portion 12112 are adjacently disposed in series with each other, and the cross-sectional area of the inflow portion 12111 (the cross-sectional area taken by a plane perpendicular to the Z direction) is equal to the cross-sectional area of the outflow portion 12112 (the cross-sectional area taken by a plane perpendicular to the Z direction), the fluid flows toward the inside of the space surrounded by the cylindrical portion 111 in the inflow portion 12111, in the outflow portion 12112, the fluid flows outside the space surrounded by the cylindrical portion 111. As shown in fig. 5 and 7, the second flow path 122 includes a second flow path portion 1222 and a second water well portion 1221, the second flow path portion 1222 extends along an outer surface of the molding cavity 11 on the Z1 direction side (in the illustrated example, extends substantially in a plane perpendicular to the Z direction), the second water well portion 1221 is provided in plurality in series with each other, the second water well portions 1221 extend in the Z direction from the second flow path portion 1223, respectively (in the illustrated example, the dimension of the second water well portion 1221 in the Z direction is smaller than the dimension of the first water well portion 1211 in the Z direction, but is not limited thereto), and each of the second water well portions 1221 includes an inflow portion 12211 and an outflow portion 12212, wherein the inflow portion 12211 and the outflow portion 12212 are provided adjacent to each other in series, and a cross-sectional area of the inflow portion 12211 (a cross-sectional area obtained by cutting with a plane perpendicular to the Z direction) and a cross-sectional area of the outflow portion 12212 (a cross-sectional area obtained by cutting with a plane perpendicular to the Z direction), the fluid flows inside the space surrounded by the cylindrical portion 111 in the inflow portion 12211, and flows outside the space surrounded by the cylindrical portion 111 in the outflow portion 12212. More specifically, as shown in fig. 7, the first water well 1211 extends from the Z2 direction side in the Z direction (corresponding to one side in the axial direction of the cylindrical portion of the molding chamber 11 in the present application) toward the Z1 direction side (corresponding to the other side in the axial direction of the cylindrical portion of the molding chamber 11 in the present application) with respect to the product W to be molded (the molding chamber 11), and the plurality of first water well 1211 is arranged substantially linearly at intervals in the X direction, and a part of the plurality of first water well 1211 extends to the inside of the molded product W (corresponding to the inside of the space surrounded by the cylindrical portion of the molding chamber 11 in the present application). As shown in fig. 7, the second water well portions 1221 extend from the Z1 direction side in the Z direction toward the Z2 direction side with respect to the product W to be molded (molding cavity 11), and the plurality of second water well portions 1221 are arranged at intervals substantially linearly in the X direction. In the present embodiment, a part of the first flow path 121 is located on the outer peripheral side of the product W to be molded and at a position overlapping the product W to be molded when viewed in the direction orthogonal to the Z direction, and the entire second flow path 122 is located on the Z1 direction side in the Z direction with respect to the product W to be molded.

Here, the shortest distance between the water well portion and the molding cavity 11 is preferably 8mm to 20 mm. In the present embodiment, as shown in fig. 8 and 9, the shortest distance d between the tip end portions (end portions on the Z1 direction side) of two first water well portions 1211 on the X2 direction side among the plurality of first water well portions 1211 and the bottom portion W2 of the product W to be molded is set to 8 mm.

Further, in the present embodiment, as shown in fig. 2, the molding die 10 includes a first die M1 and a second die M2 which are closed and opened in the Z direction, wherein the first die M1 has a protrusion, the second die M2 has a depression, the protrusion of the first die M1 is inserted into the inside of the depression of the second die M2 in the Z direction to enclose the molding cavity 11 together with the depression, in the first die M1, the protrusion has a first water well portion 1211, and in the second die M2, a portion constituting the bottom of the depression has a second water well portion 1221. Further, although not shown, a bearing portion forming portion corresponding to the first bearing portion of the product W to be formed is provided in the forming cavity 11, and the bearing portion forming portion is provided so that the thickness of the first bearing portion of the product W to be formed is uniform, that is, as shown in fig. 10, the thickness of the plurality of first plate-like ribs W1121, the plurality of second plate-like ribs W1122, the third plate-like rib W1123, and the boss portion W111 are the same when viewed in the X direction.

Here, as shown in fig. 2, the first flow path 121 is mainly provided in the first mold M1 (mainly formed by a hole opened in the first mold M1), the second flow path 122 is mainly provided in the second mold M2 (mainly formed by a hole opened in the second mold M2), and as shown in fig. 7, the inflow portions 12111, 12211 and the outflow portions 12112, 12212 of the water well portion are formed by inserting a partition PT into a columnar hole HL opened in the first mold M1 and the second mold M2 and extending in the Z direction.

In the present embodiment, as shown in fig. 2, the molding die 10 further includes a base M3 and a lid M4, the base M3 abuts against the first die M1 from the Z2 direction side in the Z direction, and the lid M4 abuts against the second die M2 from the Z1 direction side in the Z direction.

(main effect of the present embodiment)

According to the molding apparatus 1 of the present embodiment, in the molding die 10, the cooling passage 12 includes the water well portion extending from the passage portion toward the side where the molding cavity 11 is located, and therefore, compared with the case where only the passage portion extending along the outer surface of the molding cavity 11 is provided in the past, the water well portion can be used to perform cooling at a position closer to the molding cavity 11, thereby improving the cooling efficiency of the molded product, shortening the molding cycle, and improving the production efficiency; the water well portion has inflow portions 12111, 12211 and outflow portions 12112, 12212, the inflow portions 12111, 12211 and the outflow portions 12112, 12212 are disposed adjacent to each other in series, and the fluid flows in the inflow portions 12111, 12211 in a direction close to the molding cavity 11 and the fluid flows in the outflow portions 12112, 12212 in a direction away from the molding cavity 11, so that the total length and total volume of the cooling flow path in the mold can be easily increased, thereby improving the cooling efficiency of the entire mold, shortening the molding cycle, and improving the production efficiency.

Further, according to the molding apparatus 1 of the present embodiment, by providing the plurality of first water well portions 1211 and extending at least one first water well portion 1211 to the inside of the cylindrical portion 111, the cooling efficiency of the inner wall surface portion of the body portion of the molded product W can be further improved, thereby further shortening the molding cycle and improving the production efficiency.

Further, according to the molding machine 1 of the present embodiment, the molded product W is easily and uniformly cooled by cooling from both sides in the axial direction of the cylindrical portion 111 by the first water well 1211 and the second water well 1221, and occurrence of flaws or the like due to local concentration of stress caused by uneven cooling on the surface of the molded product W is avoided.

The present invention has been described above by way of example with reference to the accompanying drawings, and it is to be understood that the specific implementations of the present invention are not limited to the above-described embodiments.

For example, in the above embodiment, the product W to be molded has been described by taking the frame portion for the ice maker as an example, but is not limited thereto, and the product to be molded may be another component.

In the above embodiment, the product W to be molded has a rectangular parallelepiped shape as a whole and includes the cylindrical body portion W1 and the plate-like bottom portion W2, but the present invention is not limited thereto, and the product W to be molded may have another shape such as a cylindrical shape as a whole or may have a cylindrical shape without the bottom portion W2.

Further, in the above-described embodiment, as shown in fig. 6 to 8, the first side wall W11 of the product W to be molded is thick relative to the second side wall W12, the third side wall W13, and the fourth side wall W14, and the bottom W2 of the product W to be molded is thick relative to the second side wall W12, the third side wall W13, and the fourth side wall W14, and therefore, the cooling speed is easily lowered in the vicinity of the first side wall W11 and the vicinity of the bottom W2 as compared with other portions.

In view of the above, as shown in fig. 11 and 12, it is also conceivable to provide auxiliary heat sinks 131, 132 formed of a metal material in the vicinity of the molding cavity 11 (specifically, in the vicinity of the first side wall W11 and in the vicinity of the bottom W2). In this case, it is preferable that the auxiliary heat sinks 131 and 132 be formed of beryllium copper, and that at least a part of the auxiliary heat sinks 131 and 132 be provided inside the space surrounded by the cylindrical portion 11 (in the example shown in fig. 11 and 12, the upper portions of the auxiliary heat sinks 131 and 132 are inserted inside the space surrounded by the cylindrical portion 11, respectively, and abut against the molded product from the inner peripheral side).

In the above embodiment, the cooling flow path 12 includes the first flow path 121 and the second flow path 122 that are independent of each other, but the present invention is not limited to this, and the first flow path 121 and the second flow path 122 may be formed in series with each other in some cases.

In the above embodiment, the first flow path 121 includes the plurality of first water well portions 1211 arranged in series with each other, and the second flow path 122 includes the plurality of second water well portions 1221 arranged in series with each other, but the present invention is not limited to this, and only one of the first water well portions 1211 and the second water well portions 1221 may be provided, and the number and arrangement of the first water well portions 1211 and the second water well portions 1221 are not limited to the illustrated number and arrangement, and may be set as appropriate depending on the case. For example, in the above embodiment, the second water well portion 1221 does not extend to the inside of the space surrounded by the cylindrical portion 11, but may be provided to extend to the inside of the space surrounded by the cylindrical portion 11 as the case may be.

In the above embodiment, the cross-sectional area of the inflow portion 12111 of the first water well portion 1211 is equal to the cross-sectional area of the outflow portion 12112, and the cross-sectional area of the inflow portion 12211 of the second water well portion 1221 is equal to the cross-sectional area of the outflow portion 12212, but the present invention is not limited thereto, and the cross-sectional area of the inflow portion 12111 of the first water well portion 1211 may not be equal to the cross-sectional area of the outflow portion 12112, and the cross-sectional area of the inflow portion 12211 of the second water well portion 1221 may not be equal to the cross-sectional area of the outflow portion 12212.

In the above embodiment, the first water well 1211 extends in the Z direction and the second water well 1221 also extends in the Z direction, but the present invention is not limited to this, and the first water well 1211 and the second water well 1221 may extend, for example, obliquely to the Z direction.

In the above embodiment, the first flow path 121 is mainly formed by the hole opened in the first mold M1, and the second flow path 122 is mainly formed by the hole opened in the second mold M2, but the present invention is not limited thereto, and the first flow path 121 and the second flow path 122 may be formed by a pipe or the like inserted into the first mold M1 and the second mold M2.

It should be understood that the present invention can freely combine the components in the embodiment and the modification, or appropriately modify and omit the components in the embodiment and the modification within the scope thereof.

Claims (14)

1. A molding die comprising a molding cavity and a cooling channel through which a cooling fluid flows and having a channel portion extending along an outer surface of the molding cavity,

the cooling flow path further includes a water well portion,

the water well part is communicated with the flow path part and extends from the flow path part to one side of the forming cavity,

the well portion has an inflow portion and an outflow portion,

the inflow portion and the outflow portion are disposed adjacent to each other in series, and the fluid flows in a direction approaching the molding cavity in the inflow portion and flows in a direction away from the molding cavity in the outflow portion.

2. A molding die according to claim 1,

the molding cavity is provided with a cylindrical part corresponding to the shape of the main body part of the product to be molded,

the well portion extends from the outside of the cylindrical portion toward a space surrounded by the cylindrical portion.

3. A molding die according to claim 2,

the water well part comprises a first water well part,

the first water well part extends from one side to the other side of the cylindrical part in the axial direction of the cylindrical part with respect to the cylindrical part.

4. A molding die according to claim 3,

the first well portion is provided in plurality in series with each other,

at least one of the first water well portions extends into the space.

5. A molding die according to claim 3,

the well portion comprises a second well portion,

the second water well part extends from the other side of the cylindrical part in the axial direction toward one side with respect to the cylindrical part.

6. A molding die according to claim 5,

comprises a first mold and a second mold which are used for closing and opening the mold along the axial direction of the cylindrical part,

the first mold has a protrusion portion that is formed on the first mold,

the second mold has a concave portion,

the protruding portion is inserted into the inside of the recessed portion in the axial direction of the cylindrical portion in a state where the first mold and the second mold are clamped, and encloses the molding cavity together with the recessed portion,

in the first mold, at least the protruding portion has the first well portion,

in the second mold, at least a portion constituting a bottom of the recess portion has the second well portion.

7. A molding die according to claim 2,

a bearing part forming part is arranged in the forming cavity,

the bearing part forming part is used for forming a bearing part which is included in a product to be formed and has an axial direction vertical to the axial direction of the cylindrical part,

the bearing portion forming portion is provided to make the wall thickness of the formed bearing portion uniform.

8. A molding die according to claim 1,

the water well portion is provided in plurality in series with each other.

9. A molding die according to claim 1,

the shortest distance between the water well part and the forming cavity is 8-20 mm.

10. A molding die according to claim 1,

an auxiliary heat sink made of a metal material is provided,

the auxiliary heat dissipation member is arranged adjacent to the molding cavity.

11. A molding die according to claim 10,

the auxiliary heat dissipation member is formed of beryllium copper,

the molding cavity is provided with a cylindrical part corresponding to the shape of the main body part of the product to be molded,

at least a part of the auxiliary heat sink is disposed in a space surrounded by the cylindrical portion.

12. A molding die according to claim 1,

the cross-sectional area of the inflow portion and the cross-sectional area of the outflow portion are equal.

13. A molding die according to claim 1,

having a hole constituting the well portion,

the holes are separated by a partition to form the inflow portion and the outflow portion.

14. A molding apparatus, comprising:

a molding die as defined in any one of claims 1 to 13;

a mold temperature controller having a controller-side flow path and a reservoir tank for supplying a fluid for cooling to the controller-side flow path; and

and a connection pipe that connects the cooling flow path of the molding die and the controller-side flow path of the die temperature controller to form a circuit.

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