KR20220030159A - Resin molding apparatus and resin molded product manufacturing method - Google Patents

Abstract

The present invention is to reliably separate a resin molded product from unnecessary resin without causing an enlargement of the mold or an increase in unnecessary resin, and an upper mold 2 having a cavity 2a formed therein; Opposite to, the lower frame 3 provided with the resin injection part 4 for injecting the resin material J into the cavity 2a, and the frame clamping mechanism for fastening the upper frame 2 and the lower frame 3 (5) is provided, and the resin injection part (4) is provided with a port (41a) for accommodating the resin material (J) and is provided so as to be able to advance and retreat with respect to the lower frame (3) via the elastic member (43). , having a port block 41 having a protrusion 411 protruding (protruding) onto the mold surface of the lower frame 3 and a plunger 421 provided in the port 41a, the upper frame 2 and the lower and a transfer mechanism 42 for injecting the resin material J into the cavity 2a from the port 41a by moving the plunger 421 in a state in which the mold 3 is clamped, and the mold clamping mechanism 5 During the frame opening operation of opening the upper frame 2 and the lower frame 3, the transfer mechanism 42 moves the plunger 421 toward the upper frame 2, so that the The resin molded product W2 and the unnecessary resin K on the pot block 41 are separated.

Description

A resin molding apparatus and the manufacturing method of a resin molded article TECHNICAL FIELD

The present invention relates to a resin molding apparatus and a method for manufacturing a resin molded article.

Conventionally, as disclosed in Patent Document 1, for example, an upper frame and a lower frame are die-clamped, and the gate block provided in the lower frame is a part of the substrate. It is considered to perform resin encapsulation by injecting molten resin into the cavity of the upper frame from the space formed between the upper surface of the gate block and the lower surface of the upper frame in a state in which the metal is pressed against the lower frame.

In this resin sealing device, a spring for moving the gate block up and down is provided below the gate block, and it is in a compressed state at the time of frame fastening. And, when the upper frame and lower frame are opened, the spring is restored from the compressed state, and the gate block is pushed up relatively with respect to the upper surface (mold surface) of the lower frame, so that unnecessary (不要) The resin runner is separated from the substrate.

Japanese Patent Laid-Open No. 2000-311908

However, in the device described above, the unnecessary resin and the substrate are separated by using the elastic force of the spring. Then, it is necessary to enlarge a spring, and an enlargement of a shaping|molding die and an enlargement of unnecessary resin will be brought about.

Therefore, the present invention has been made to solve the above problems, and its main object is to reliably separate the resin molded article from the unnecessary resin without causing an enlargement of the molding die or an enlargement of the unnecessary resin.

That is, the resin molding apparatus according to the present invention comprises: a first mold having a cavity into which a resin material is injected; A first frame and a frame fastening mechanism for fastening the second frame are provided, wherein the resin injection unit has a port for accommodating the resin material, and is provided to move forward and backward with respect to the second frame through an elastic member. , a port block having a protruding portion protruding onto the mold surface of the second frame, and a plunger provided in the port, and moving the plunger in a state in which the first frame and the second frame are framed to move the plunger from the port a transfer mechanism for injecting the resin material into the cavity, wherein the transfer mechanism moves the plunger to It is characterized in that by moving toward the first mold, the resin molded product on the mold surface of the second mold and the unnecessary resin on the pot block are separated.

Moreover, the manufacturing method of the resin molded article which concerns on this invention is the manufacturing method of the resin molded article using the said resin molding apparatus.

In addition, the method for manufacturing a resin molded article according to the present invention includes a first mold having a cavity into which a resin material is injected, and a second mold facing the first mold and provided with a resin injection part for injecting a resin material into the cavity; and a frame fastening mechanism for fastening the first frame and the second frame, wherein the resin injection unit has a port for accommodating the resin material, and is capable of advancing and retreating with respect to the second frame through an elastic member. It is provided and has a port block having a protrusion protruding onto the mold surface of the second frame, and a plunger provided in the port, and moves the plunger in a state in which the first frame and the second frame are frame-fastened to the port. A method for manufacturing a resin molded product using a resin molding apparatus having a transfer mechanism for injecting the resin material into the cavity from the , characterized in that the transfer mechanism moves the plunger toward the first mold to separate the resin molded product on the mold surface of the second mold and the unnecessary resin on the pot block.

According to the present invention constituted in this way, it is possible to reliably separate the resin molded article from the unnecessary resin without causing an enlargement of the molding die or an enlargement of the unnecessary resin.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the structure of the resin molding apparatus of 1 Embodiment which concerns on this invention.
It is a schematic diagram which shows the structure of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the board|substrate mounting state and the resin material loading state of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the frame-fastening state of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the resin injection|pouring state of the shaping|molding module of the same embodiment.
6 : is a schematic diagram which shows the reference position X of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the peeling state of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the state at the time of the frame opening operation|movement start of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the gate break operation|movement during the frame opening operation|movement of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the state after gate break during the frame opening operation|movement of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the frame-opening state of the shaping|molding module of the same embodiment.
It is a schematic diagram which shows the state in which each adsorption|suction part of the unloader of the same embodiment contacted the resin molded article and unnecessary resin.
It is a schematic diagram which shows the state in which unnecessary resin rose and the adsorption|suction part for unnecessary resin decreased in the same embodiment.
It is a schematic diagram which shows the state which the unloader of the same embodiment adsorb|sucks and carries out a resin molded article and unnecessary resin.
15 : is a schematic diagram which shows (a) a scraping position in a scraping operation|movement of the same embodiment, and (b) a rod position.

Next, the present invention will be described in more detail by way of example. However, this invention is not limited by the following description.

The resin molding apparatus of the present invention, as described above, includes a first mold having a cavity into which a resin material is injected; and a frame fastening mechanism for fastening the first frame and the second frame, wherein the resin injection part has a port for accommodating the resin material, and is provided to move forward and backward with respect to the second frame through an elastic member. and a port block having a protrusion (protruding) protruding onto the mold surface of the second frame, and a plunger provided in the port, wherein the first frame and the second frame are frame-fastened a transfer mechanism for injecting the resin material into the cavity from the port by moving the plunger in the A transfer mechanism moves the plunger toward the first mold to separate the resin molded product on the mold surface of the second mold and the unnecessary resin on the pot block.

With this resin molding apparatus, the unnecessary resin on the pot block is pushed toward the first mold by the plunger, so it is possible to reliably separate the resin molded product from the unnecessary resin without increasing the elastic force of the elastic member for moving the pot block forward and backward. . Moreover, since it is not necessary to increase the elastic force of the elastic member, enlargement of the elastic member is prevented, and further enlargement of the molding die and the enlargement of unnecessary resin are not caused.

In addition, in order to reliably separate the resin molded product and unnecessary resin by using the elastic force of the elastic member compressed at the time of clamping the mold, the transfer mechanism receives the elastic force, which is the restoring force of the elastic member, during the mold opening operation. It is preferable to separate the resin molded product from the unnecessary resin by moving the plunger toward the first mold at the same time that the pot block moves toward the first mold.

Even when the plunger is moved toward the first mold to separate the resin molded product and the unnecessary resin, if the plunger and the unnecessary resin are closely bonded to each other, trouble occurs in the subsequent recovery of the unnecessary resin there is In order to solve this problem, the transfer mechanism preferably moves the plunger to the side opposite to the first mold before moving the plunger toward the first mold to remove the unnecessary resin from the plunger. Do.

In this configuration, since the plunger and the unnecessary resin are previously peeled off, the separated unnecessary resin is easily recovered after the resin molded article and the unnecessary resin are separated.

The port block is in a state in which the unnecessary resin is sandwiched between the first mold and the first mold by an elastic force that is a restoring force of the elastic member for a predetermined period from the start of the mold opening operation, and the predetermined period has elapsed Afterwards, it is preferable to peel the unnecessary resin from the first mold while preserving the unnecessary resin.

With this configuration, in a state in which the unnecessary resin is sandwiched between the pot block and the first mold, the resin molded product and the unnecessary resin are separated, and the unnecessary resin is suddenly removed from the pot block during their separation. It is possible to prevent it from being thrown away.

In order to reliably separate the resin molded article and the unnecessary resin while preventing the resin molded article from lifting or shifting from the second mold when separating the resin molded article and the unnecessary resin, the first mold is , it is preferable to have a pressing member for pressing the resin molded product toward the mold surface of the second mold at least until the resin molded product and the unnecessary resin are separated during the mold opening operation.

Although the said plunger slides in the inside of the said pot, the sliding resistance between the said plunger and the said port will become large by the resin adhering to the said pot inner surface. Then, the port block follows the movement of the plunger, and the elastic member does not fully (completely) restore, so there is a fear that the port block may not return to the initial state before frame fastening. In this case, there is a fear that the elastic member suddenly stretches (stretches) when the unnecessary resin is recovered, and the unnecessary resin is released from the pot block due to its elasticity, making it difficult to recover the unnecessary resin.

For this reason, it is preferable that the said transfer mechanism moves the said plunger toward the said 1st frame until the said elastic member returns to the restored initial state.

As the transfer mechanism moves the plunger toward the first mold, the projecting portion of the port block sandwiches the resin molded product between the mold surface of the second mold, and is separated from the resin molded product. It is preferable to be in a non-contact state.

With this configuration, the protrusion is reliably brought into a non-contact state with the resin molded product by the movement of the plunger.

Moreover, the manufacturing method of the resin molded article using the above-mentioned resin molding apparatus is also one aspect|mode of this invention.

In addition, the method for manufacturing a resin molded article according to the present invention includes a first mold having a cavity into which a resin material is injected, and a second mold facing the first mold and provided with a resin injection part for injecting a resin material into the cavity; and a frame fastening mechanism for fastening the first frame and the second frame, wherein the resin injection unit has a port for accommodating the resin material, and is capable of advancing and retreating with respect to the second frame through an elastic member. It is provided and has a port block having a protrusion protruding onto the mold surface of the second frame, and a plunger provided in the port, and moves the plunger in a state in which the first frame and the second frame are frame-fastened to the port. A method for manufacturing a resin molded product using a resin molding apparatus having a transfer mechanism for injecting the resin material into the cavity from the , characterized in that the transfer mechanism moves the plunger toward the first mold to separate the resin molded product on the mold surface of the second mold and the unnecessary resin on the pot block.

<One embodiment of the present invention>

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of the resin molding apparatus which concerns on this invention is demonstrated with reference to drawings. In addition, also about any figure shown below, in order to make it easy to understand, it is abbreviate|omitted or exaggerated suitably and is drawn typically. About the same component, the same code|symbol is attached|subjected and description is abbreviate|omitted suitably.

<Entire configuration of resin molding apparatus>

The resin molding apparatus 100 of this embodiment resin-molds the molding target W1 to which the electronic component Wx was connected by transfer molding using the resin material J.

Here, as the object W1 to be molded, for example, a metal substrate, a resin substrate, a glass substrate, a ceramic substrate, a circuit board, a semiconductor substrate, a wiring board, a lead frame, etc., whether or not wiring is present. In addition, the resin material (J) for resin molding is a composite material containing, for example, a thermosetting resin, and the form of the resin material (J) is granular, powdery, and liquid. , in the form of a sheet or tablet. The electronic component Wx connected to the upper surface of the object W1 is, for example, a bare chip or a resin-sealed chip.

Specifically, as shown in Fig. 1, the resin molding apparatus 100 includes a supply module 100A for supplying a molding object W1 and a resin material J before molding, a molding module 100B for resin molding, and , a storage module 100C for accommodating the molded object W2 (hereinafter, referred to as the resin molded article W2) after molding is provided as a component, respectively. In addition, the supply module 100A, the forming module 100B, and the receiving module 100C, for different components, can be detached from each other, and can be exchanged. Moreover, each component can also be increased, such as making the shaping|molding module 100B two or three.

The supply module 100A includes a molding object supply unit 11 for supplying a molding object W1, a resin material supply unit 12 for supplying a resin material J, and a molding object supply unit 11 from the molding object supply unit 11 to the molding object W1. ) and conveys it to the molding module 100B, and receives the resin material J from the resin material supply unit 12 and conveys it to the molding module 100B. The conveying device 13 (hereinafter the loader 13) is is provided.

The loader 13 moves back and forth between the supply module 100A and the forming module 100B, and moves along a rail (not shown) provided across the supply module 100A and the forming module 100B.

As shown in Fig. 2, the molding module 100B includes a first mold 2 (hereinafter, the upper mold 2) which is one of the molding molds in which the cavity 2a into which the resin material J is injected is formed. , disposed opposite to the upper mold 2 and provided with a resin injection part 4 for injecting the resin material J into the cavity 2a, the second mold 3 (hereinafter the lower mold) which is the other side of the molding mold. (3)) and a frame fastening mechanism (5) for fastening the upper frame (2) and the lower frame (3). The upper frame 2 is held by the upper frame holder 101 , and the upper frame holder 101 is fixed to the upper platen 102 . Moreover, the upper frame 2 is attached to the upper frame holder 101 via the upper frame base plate 103 . The lower frame 3 is held by a lower frame holder 104 , and the lower frame holder 104 is fixed to a movable platen 105 that moves up and down by a frame fastening mechanism 5 . Further, the lower frame 3 is attached to the lower frame holder 104 via the lower frame base plate 106 .

The resin injection part 4 is equipped with the port block 41 in which the port 41a which accommodates the resin material J was formed, and the transfer mechanism 42 which has the plunger 421 provided in the port 41a. . Moreover, the port 41a is formed of the cylindrical member 410 which makes a cylindrical shape, for example. This tubular member 410 is fitted (fitted) into a through hole formed in the port block 41 .

The port block 41 is elastically supported by the elastic member 43 so as to be able to move up and down with respect to the lower frame 3 . In other words, the port block 41 is provided so as to be able to move up and down with respect to the lower frame 3 via the elastic member 43 . In addition, the elastic member 43 is provided below the port block 41 .

Moreover, at the upper end of the port block 41, the protrusion 411 which protruded (protruded out) on the mold surface which is the upper surface of the lower frame 3 is formed. Further, on the upper surface of the port block 41, a sword portion 41b and a gate portion 41c serving as a resin flow path for introducing the resin material J injected from the port 41a into the cavity 2a are formed. Further, in the state in which the upper frame 2 and the lower frame 3 are fastened, the upper surface of the protrusion 411 contacts the upper frame 2 and the lower surface of the protrusion 411 holds the object W1 to be molded into the lower portion. It is sandwiched (interposed) between the mold surface of the frame (3).

The transfer mechanism 42 injects the resin material J into the cavity 2a from the port 41a by moving the plunger 421 in a state in which the upper frame 2 and the lower frame 3 are molded together. . Specifically, the transfer mechanism 42 includes a plunger 421 for pressure-feeding the heated and melted resin material J in the port 41a, and a plunger driving unit 422 for driving the plunger 421 . ) has

A cavity 2a is formed in the upper frame 2 to accommodate the electronic component Wx of the object W1 and into which the molten resin material J is injected. In addition, in the upper frame 2 , a concave portion 2b is formed in a portion facing the port block 41 , and the sword portion 41b and the gate portion 41c and the cavity 2a of the port block 41 . A runner portion 2c for connecting them is formed. Further, although not shown, an air vent (vent hole) is formed in the upper frame 2 on the side opposite to the port block 41 . Moreover, the runner part 2c may be abbreviate|omitted and the sword part 41b and the cavity 2a can also be directly connected via the gate part 41c.

In addition, the upper mold 2 is provided with a plurality of ejector pins 61 for separating the molded object W2 after resin molding from the upper mold 2 . These ejector pins 61 are provided so as to be able to move up and down with respect to the upper frame 2 by penetrating through a required location of the upper frame 2, and are attached to the ejector plate 62 provided on the upper side of the upper frame 2 . It is fixed. The ejector plate 62 is provided on the upper platen 102 or the like via an elastic member 63 , and has a return pin 64 . The ejector plate 62 is raised with respect to the upper frame 2 by the return pin 64 coming into contact with the outside of the mounting area of the object W1 in the lower frame 3 at the time of clamping the frame. make it As a result, the ejector pin 61 is brought into (entered into) the mold surface of the upper frame 2 at the time of clamping the frame. On the other hand, when the frame is opened, as the lower frame 3 is lowered, the ejector plate 62 is lowered with respect to the upper frame 2 , and the ejector pin 61 is caused by the elastic force of the elastic member 63 . The resin molded product (W2) is separated (released) from the upper mold (2).

And, when the upper frame 2 and the lower frame 3 are frame-fastened by the frame fastening mechanism 5, it consists of a knife part 41b, a gate part 41c, a recessed part 2b and a runner part 2c. A resin flow path communicates with the port 41a and the cavity 2a (refer to FIG. 4). In addition, when the upper frame 2 and the lower frame 3 are molded together, the port side end of the object W1 is formed between the lower surface of the protrusion 411 of the port block 41 and the mold surface of the lower frame 3 . to be pinched (to be pinched). When the resin material J melted by the plunger 421 is injected into the cavity 2a in this state, the electronic component Wx of the object W1 is resin-sealed.

In the storage module 100C, as shown in FIG. 1 , a storage part 14 for accommodating the resin molded product W2, and a accommodating part 14 for receiving the resin molded product W2 from the molding module 100B. The conveying apparatus 15 (henceforth the unloader 15) conveyed to this is provided.

The unloader 15 moves back and forth between the forming module 100B and the accommodation module 100C, and moves along a rail (not shown) provided across the forming module 100B and the accommodation module 100C.

<Operation of resin molding apparatus 100>

The operation of the resin molding apparatus 100 will be briefly described with reference to Figs. 3 to 14 . 3 to 14 show only one side (left side) of the port block 41 and omit the other side (right side), but in each figure, the state of the other side is the same as the state of the one side. . In addition, the following operation|movement is performed by the control part COM provided in 100A of supply module 100A controlling each part, for example.

As shown in FIG. 3 , in a state in which the upper frame 2 and the lower frame 3 are opened, the object W1 before forming is conveyed by the loader 13 and passed to the lower frame 3 . It is witty (put on it). At this time, the upper mold 2 and the lower mold 3 are heated to a temperature at which the resin material J can be melted and cured. Thereafter, the resin material J is conveyed by the loader 13 and accommodated in the port 41a of the port block 41 .

In this state, when the lower frame 3 is raised by the frame clamping mechanism 5, the port block 41 comes into contact with the upper frame 2 and descends with respect to the lower frame 3, as shown in FIG. 4 . Thus, the lower surface of the protrusion 411 is in contact with the port side end of the object W1 to be molded. Moreover, the lower surface of the upper frame 2 contacts the outer peripheral part of the shaping|molding object W1 which the protrusion part 411 does not contact. Thereby, the upper frame 2 and the lower frame 3 are frame-fastened. When the transfer mechanism 42 raises the plunger 421 by the plunger driving unit 422 after this frame fastening, as shown in Fig. 5, the molten resin material J in the port 41a passes through the resin passage. It is injected into the cavity 2a. Then, after a predetermined molding time has elapsed and the resin material J is cured in the cavity 2a, the mold clamping mechanism 5 opens the upper mold 2 and the lower mold 3 .

Here, in the resin molding apparatus 100 of the present embodiment, the resin molded product W2 and the unnecessary resin ( K) is separated (gate break operation). In addition, unnecessary resin K is resin which remained on the pot block 41 and hardened|cured.

For example, just before the above molding time elapses (before the start of the mold opening operation), the transfer mechanism 42, as shown in Fig. 6, the plunger 421 pushes the unnecessary resin K. The force is reduced to a predetermined value (for example, a force of a relatively small value such that the plunger 421 and the unnecessary resin K can maintain a contact state without peeling). In addition, the force that the plunger 421 pushes is measured by a force sensor (including a weight sensor, a load sensor, etc.), such as a load cell (not shown) provided in the drive shaft (transfer shaft) of the plunger drive part 422, etc.

And the control part COM memorize|stores the position of the plunger 421 when it becomes the said predetermined value of force as the reference position X (refer FIG. 6). This reference position X is a position that serves as a reference for the gate break operation and unnecessary resin K to be separated and collected later. In addition, the reference position X is not limited to the position of the plunger 421, It is good also as a position of other members, such as a drive shaft (transfer shaft) of the plunger drive part 422 connected to the plunger 421.

And before the start of the frame opening operation, the transfer mechanism 42 lowers the plunger 421 to the side opposite to the upper frame 2, as shown in FIG. Descend to (Y). By lowering the plunger 421 to the removal position Y, the upper surface of the plunger 421 and the lower surface of the unnecessary resin K peel. After this removal operation, the transfer mechanism 42 raises the plunger 421 to the above-mentioned reference position X. At this time, the upper surface of the plunger 421 is in contact with the lower surface of the unnecessary resin K (state in FIG. 6 ).

Next, as shown in FIG. 8, when the frame clamping mechanism 5 starts lowering|falling of the lower frame 3, a frame opening operation|movement is started. As shown in Fig. 9, at the timing when the frame clamping mechanism 5 starts the frame opening operation and the clamping force falls to a predetermined value (different from the predetermined value in the transfer mechanism 42 described above), as shown in Fig. 9 , the transfer mechanism Reference numeral 42 raises the plunger 421 toward the upper frame 2 . Thereby, the unnecessary resin K on the pot block 41 is pushed toward the upper frame 2 by the plunger 421. In addition, the clamping force is measured by a force sensor (including a weight sensor, a load sensor, etc.), such as a load cell (not shown) provided in the clamp shaft of the frame clamping mechanism 5, etc.

Moreover, when the transfer mechanism 42 raises the plunger 421 toward the upper frame 2, as shown in FIG. 9, the port block 41 is elastic force which is the restoring force of the compressed elastic member 43. It rises from the lower frame (3) toward the upper frame (2). In other words, during the frame opening operation, the port block 41 rises from the lower frame 3 toward the upper frame 2 by receiving the elastic force of the elastic member 43, and at the same time, the transfer mechanism 42 moves the plunger ( 421) is raised from the lower frame (3) toward the upper frame (2).

In addition, during the frame opening operation, the timing at which the port block 41 starts to rise from the lower frame 3 toward the upper frame 2 by receiving the elastic force of the elastic member 43 , and by the transfer mechanism 42 . The timing at which the plunger 421 starts to rise from the lower frame 3 toward the upper frame 2 may coincide or may be different.

As shown in FIG. 10 , the mold surface of the lower frame 3 is raised by the lifting of the plunger 421 by the transfer mechanism 42 and the lifting of the port block 41 by the elastic force of the elastic member 43 . The resin molded product W2 on the upper part and the unnecessary resin K on the pot block 41 are separated (gate break).

At this time, the resin molded article W2 on the lower mold 3 is pressed toward the mold surface of the lower mold 3 by the ejector pins 61 provided on the upper mold 2, and the resin molded article ( The lower surface of W2) is in a state in close contact with the mold surface of the lower frame 3 (refer to FIG. 9). This ejector pin 61 functions as a pressing member for pressing the resin molded product W2 against the mold surface of the lower mold 3 when the resin molded product W2 and the unnecessary resin K are separated. In this way, since the resin molded product W2 is pressed against the mold surface of the lower mold 3 by the pressing member, a shear stress is likely to be applied between the resin molded product W2 and the unnecessary resin K, thereby making it easy to break the gate.

Here, the ejector pin 61 as a pressing member presses the resin molded product W2 toward the mold surface of the lower mold 3 at least until the resin molded product W2 and the unnecessary resin K are separated. In other words, during the mold opening operation, while the ejector pin 61 is pressing the resin molded product W2, by the above-mentioned elevation of the port block 41 and the elevation of the plunger 421, the resin molded product W2 is Separation of and unnecessary resin (K) is completed.

In the above gate break, the unnecessary resin K is sandwiched between the upper surface of the port block 41 pushed upward by the elastic force of the elastic member 43 and the lower surface of the upper frame 2 (interposed). (See FIGS. 9 and 10). In other words, in the predetermined period from the start of the frame opening operation, the port block 41 sandwiches (interposes) the unnecessary resin K between the upper frame 2 and the upper frame 2 by the elastic force of the elastic member 43 . to be in a state In addition, the predetermined period is a period including at least until the gate break is completed, and the lower frame 3 is set so that the elastic member 43 returns to the restored initial state (the state before being pushed and compressed by the upper frame 2). This is the period until the descent.

Then, after a predetermined period has elapsed, in other words, as the frame clamping mechanism 5 lowers the lower frame 3 further, as shown in FIG. 11 , the pot block 41 releases the unnecessary resin K. The unnecessary resin (K) is peeled off from the upper frame (2) while being preserved. Here, the sword portion 41b and the gate portion 41c are formed in the port block 41, and the contact area between the port block 41 and the unnecessary resin K is the upper frame 2 and the unnecessary resin K Due to being larger than the contact area with , the unnecessary resin K is peeled from the upper frame 2 without peeling from the pot block 41 . Thereby, the ejector pin for contacting the unnecessary resin K and peeling the unnecessary resin K from the upper frame 2 can be made unnecessary.

In addition, as the transfer mechanism 42 raises the plunger 421 toward the upper frame 2 , the protrusion 411 of the port block 41 is formed between the mold surface of the lower frame 3 and the resin. From the state which pinched|interposed the molded article W2, it will be in a non-contact state with the resin molded article W2.

In addition, apart from the gate brake described above, the transfer mechanism 42 moves the plunger 421 into the upper frame until the elastic member 43 on the lower side of the port block 41 returns to the restored initial state before frame fastening. It rises toward (2) (refer FIG. 11). Thereby, in the next resin molding, when the shaping|molding object W1 is mounted below the protrusion part 411, the protrusion part 411 does not become an obstacle.

After performing the above frame opening operation|movement and isolate|separating the resin molded product W2 and the unnecessary resin K, the resin molded product W2 and the unnecessary resin K are carried out by the unloader 15.

The unloader 15 has the adsorption|suction part 15a for molded articles, and the adsorption|suction part 15b for unnecessary resins, as shown in FIG. Both (both) of the molded article adsorption section 15a and the unnecessary resin adsorption section 15b are constituted by a resin adsorption pad, and in particular, the unnecessary resin adsorption section 15b is, for example, a bellows. ), which is superior in elasticity to the adsorption part 15a for molded products. Moreover, the adsorption|suction part 15a for molded articles and the adsorption|suction part 15b for unnecessary resins are provided in the base member 151, and are connected to the suction source which is not shown in figure. Moreover, at least the adsorption|suction part 15a for molded products is comprised so that movement with respect to the base member 151 is possible in the left-right direction and the up-down direction. Moreover, the unloader 15 is provided with the holding|maintenance nail|claw 152 for holding the resin molded article W2 adsorbed by the molded article adsorption|suction part 15a.

After the above-described frame opening operation is completed, the unloader 15 is introduced between the upper frame 2 and the lower frame 3 . Then, as shown in Fig. 12, the molded article adsorption portion 15a is brought into contact with the upper surface of the resin molded article W2, and the unnecessary resin adsorption portion 15b is brought into contact with the upper surface of the unnecessary resin K. .

In this state, the transfer mechanism 42 raises the plunger 421 and lifts the unnecessary resin K from the pot block 41, as shown in FIG. Here, when the unnecessary resin K has a residual portion K1 remaining in the pot 41a, the residual portion K1 is raised to such an extent that it does not interfere with the recovery of the unnecessary resin K. Thereby, the unnecessary resin K is mold-separated from the pot block 41 and closely_contact|adheres to the adsorption|suction part 15b for unnecessary resins. At this time, the adsorption|suction part 15b for unnecessary resin is elastically deformed and it is in a reduced state.

After the unnecessary resin adsorption unit 15b is reduced, the adsorption of the unnecessary resin adsorption unit 15b is started, and the unnecessary resin K is adsorbed to the unnecessary resin adsorption unit 15b. Moreover, the adsorption|suction of the adsorption|suction part 15a for molded articles is started, and the resin molded article W2 is made to adsorb|suck to the adsorption|suction part 15a for molded articles.

And, as shown in FIG. 14, the adsorption|suction part 15a for molded articles which adsorbed the resin molded article W2 is moved in the direction away from the port block 41, and the resin molded article W2 is moved out of the protrusion 411. make it Then, after raising the unloader 15, it withdraws from the upper frame 2 and the lower frame 3. As shown in FIG. Thereby, the resin molded product W2 and unnecessary resin K are carried out by the unloader 15 .

Here, the unloader 15 may have a cleaning mechanism (not shown) for cleaning the upper frame 2 and the lower frame 3 . Moreover, as a cleaning mechanism, it is conceivable to have a rotary brush and a suction unit that sucks and discharges dust.

In this case, the unloader 15 which adsorbed the resin molded article W2 and the unnecessary resin K stays between the upper mold 2 and the lower mold 3, and performs a cleaning operation|movement.

Here, first, the transfer mechanism 42 scrapes off the resin adhered in the port 41a. In other words, the transfer mechanism 42 raises the plunger 421 to a predetermined scraping-out position, as shown in FIG. Here, the predetermined scraping position is, for example, a position in which the upper surface of the plunger 421 is higher than the opening position of the port 41a. And the transfer mechanism 42 is made to descend|fall from the predetermined|prescribed scraping-out position to the rod position for accommodating the resin material J. After that, the transfer mechanism 42 raises the plunger 421 to a predetermined scraping-out position again. Thereby, the resin adhering in the pot is scraped out of the pot 41a.

Then, the upper frame 2, the lower frame 3, the pot block 41, and the plunger 421 are cleaned with the cleaning mechanism provided in the unloader 15. As shown in FIG. After the cleaning operation is finished, the unloader 15 is withdrawn from the upper mold 2 and the lower mold 3, and the resin molded product W2 and the unnecessary resin K are unloaded.

<Effect of this embodiment>

According to the resin molding apparatus 100 of this embodiment, since the transfer mechanism 42 raises the plunger 421 toward the upper frame 2 during the frame opening operation by the frame clamping mechanism 5, the pot block The unnecessary resin (K) on the upper part (41) is pushed toward the upper frame (2) by the plunger (421), without increasing the elastic force of the elastic member (43) for advancing and retreating the port block (41). (W2) and unnecessary resin (K) are reliably separated. In addition, since it is not necessary to increase the elastic force of the elastic member 43, it is possible to prevent an increase in the size of the elastic member 43 and, further, to increase the size of the molds 2 and 3 and increase the size of the unnecessary resin K. none.

In addition, in the present embodiment, during the mold opening operation, the port block 41 rises upon receiving the elastic force, which is the restoring force of the elastic member 43, and at the same time, the transfer mechanism 42 raises the plunger 421, so that the resin molded product ( Since W2) and the unnecessary resin K are separated, the resin molded product W2 and the unnecessary resin K can be reliably separated by using the elastic force of the elastic member 43 compressed when the mold is fastened.

In addition, in this embodiment, before raising the plunger 421 toward the upper frame 2, the plunger 421 is lowered to the opposite side to the upper frame 2, and unnecessary resin ( Since the lower surface of K) is peeled, the plunger 421 is raised toward the upper frame 2 to separate the resin molded product W2 and the unnecessary resin K, and then the separated unnecessary resin K can be easily recovered. can do.

Furthermore, in the present embodiment, from the start of the frame opening operation to the completion of the gate break, the unnecessary resin K is sandwiched between the pot block 41 and the upper frame 2 (interposed). It is possible to prevent the unnecessary resin K from suddenly slipping out (departing) from the pot block 41 due to a kickback or the like that the unnecessary resin K is separated from the resin molded product W2.

In addition to this, in the present embodiment, the resin molded product W2 is used by a pressing member such as the ejector pin 61 provided in the upper frame 2 until the resin molded product W2 and the unnecessary resin K are separated. ) is pressed toward the mold surface of the lower mold 3, so that when the unnecessary resin K is separated, the resin molded article (W2) is prevented from lifting or shifting from the lower mold (3) W2) and unnecessary resin (K) can be reliably separated.

In addition to this, the transfer mechanism 42 raises the plunger 421 toward the upper frame 2 until the elastic member 43 returns to the restored initial state. Even if the sliding resistance between the 421 and the port 41a increases, the port block 41 can be reliably returned to the initial position when the frame is opened.

<Other modified embodiments>

In addition, this invention is not limited to the said embodiment.

For example, in the above embodiment, before separating the resin molded product W2 and the unnecessary resin K, the plunger 421 is lowered to separate the upper surface of the plunger 421 and the lower surface of the unnecessary resin K, but , After separating the resin molded product W2 and the unnecessary resin K, the plunger 421 may be lowered to peel the upper surface of the plunger 421 and the lower surface of the unnecessary resin K.

Further, in the above embodiment, the resin molded product W2 is moved to the lower mold by the ejector pins 61 provided on the upper mold 2 until the resin molded product W2 and the unnecessary resin K are separated. Although it is set as the structure which presses toward the mold surface of 3), you may provide the pressing member which presses the resin molded article W2 to the mold surface of the lower frame 3 separately from the ejector pin 61 .

Moreover, although the sword part 41b and the gate part 41c are formed in the port block 41 in the said embodiment, you may form the sword part and the gate part in the recessed part 2b of the upper frame 2 . In this case, when the upper frame 2 and the lower frame 3 are opened, there is a possibility that the unnecessary resin K will separate from the pot block 41 and stay in the concave portion 2b of the upper frame 2 . For this reason, an ejector pin for separating the unnecessary resin K from the upper mold 2 may be provided.

The resin molding apparatus of this invention is not limited to normal transfer molding, What is necessary is just the structure provided with the transfer mechanism.

In addition, it cannot be overemphasized that this invention is not limited to the said embodiment, and various deformation|transformation is possible in the range which does not deviate from the meaning.

100… resin molding equipment
W1 … molded object
J … resin material
W2 … resin molded product
K … unnecessary resin
2 … 1st frame (upper frame)
2a … cavity
3 … 2nd frame (lower frame)
4 … resin injection part
41 … port block
41a… port
411… projection part
42 … transfer mechanism
421… plunger
43 … elastic member
5 … frame fastener
61 … Ejector pin (pressing member)

Claims (9)

A first frame in which a cavity into which a resin material is injected is formed;
a second mold facing the first mold and provided with a resin injection part for injecting a resin material into the cavity;
and a frame fastening mechanism for fastening the first frame and the second frame;
The resin injection unit,
A port for accommodating the resin material is formed, the port is provided so as to be capable of advancing and retreating with respect to the second mold via an elastic member, the port having a protrusion protruding onto a mold surface of the second mold block and
and a transfer mechanism having a plunger provided in the port and injecting the resin material from the port into the cavity by moving the plunger in a state in which the first frame and the second frame are molded;
During the frame opening operation of the frame clamping mechanism to open the first frame and the second frame, the transfer mechanism moves the plunger toward the first frame, so that the mold surface of the second frame A resin molding apparatus which separates the resin molded article on the top and the unnecessary resin on the pot block. The method of claim 1,
During the mold opening operation, the transfer mechanism receives the restoring force of the elastic member to move the port block toward the first mold, and simultaneously moves the plunger toward the first mold, so that the resin molded product and A resin molding apparatus for separating the unnecessary resin. 3. The method of claim 1 or 2,
and the transfer mechanism moves the plunger to a side opposite to the first mold before moving the plunger toward the first mold to peel the unnecessary resin from the plunger. 4. The method according to any one of claims 1 to 3,
The port block is in a state in which the unnecessary resin is sandwiched between the first mold and the first mold by the restoring force of the elastic member for a predetermined period from the start of the mold opening operation, and after the lapse of the predetermined period, the unnecessary resin A resin molding apparatus for peeling the unnecessary resin from the first mold while preserving the resin. 5. The method according to any one of claims 1 to 4,
The first mold includes a pressing member for pressing the resin molded product toward the mold surface of the second mold at least until the resin molded product and the unnecessary resin are separated during the mold opening operation. The branch is a resin molding apparatus. 6. The method according to any one of claims 1 to 5,
wherein the transfer mechanism moves the plunger toward the first mold until the elastic member returns to the restored initial state. 7. The method according to any one of claims 1 to 6,
As the transfer mechanism moves the plunger toward the first mold, the projecting portion of the port block sandwiches the resin molded product between the mold surface of the second mold and the resin molded product A resin molding apparatus which becomes a non-contact state. The manufacturing method of the resin molded article using the resin molding apparatus in any one of Claims 1-7. A first mold having a cavity into which a resin material is injected, a second mold facing the first mold and provided with a resin injection part for injecting a resin material into the cavity, the first mold and the second mold are molded together and a mold fastening mechanism to, wherein the resin injection part has a port for accommodating the resin material, is provided so as to be able to advance and retreat with respect to the second mold through an elastic member, and protrudes on the mold surface of the second mold A transfer mechanism having a port block having a protrusion and a plunger provided in the port, and injecting the resin material from the port into the cavity by moving the plunger in a state in which the first frame and the second frame are framed. As a manufacturing method of a resin molded article using the provided resin molding apparatus,
During the mold opening operation of the mold clamping mechanism to open the first mold and the second mold, the transfer mechanism moves the plunger toward the first mold, so that the resin molded product on the mold surface of the second mold and The manufacturing method of the resin molded article which isolate|separates unnecessary resin on the said pot block.

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