KR20220030163A - Resin molding apparatus and resin molded product manufacturing method - Google Patents

Abstract

The present invention is capable of stably recovering unnecessary resin and simplifies the configuration of the transfer mechanism. The lower frame 3 on which W1) is placed, the frame fastening mechanism 5 for fastening the upper frame 2 and the lower frame 3, and the lower frame 3 are provided to accommodate the resin material J A plurality of ports 41a are formed, and a port block 41 having a protrusion 411 protruding (protruding) onto the mold surface of the lower frame 3, and a plurality of ports 41a inside each It has a plurality of provided plungers (421) and moves the plurality of plungers (421) to provide a transfer mechanism (42) for injecting the resin material (J) into the cavity (2a) from the plurality of ports (41a); (2) Alternatively, in the port block 41, a connection portion 41d for connecting the residual unnecessary resin K corresponding to each of the plurality of ports 41a is formed, and the transfer mechanism 42 includes a plurality of The plunger 421 is moved by the same amount of movement.

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 conceivable to encapsulate the resin 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 that 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 relative to the upper surface (mold surface) of the lower frame, and the gate A runner, an unnecessary resin on the block, is separated from the substrate.

Japanese Patent Laid-Open No. 2000-311908

However, in said resin molding apparatus, since the runner which is a some unnecessary resin is formed corresponding to each of a some port, some unnecessary resin will remain in a gate block after resin molding. For this reason, it is necessary to collect|recover these plural unnecessary resins one by one, and there exists a possibility that the stability of collection|recovery of unnecessary resin may be impaired, so that the number of unnecessary resins on a gate block increases.

In addition, the resin passage portion comprising the knife portion, the runner portion and the gate portion is formed independently for each port, and in order to equalize the injection pressure of the resin injected into the cavity portion from each port, an elastic member or the like is provided on the support block for supporting the plunger. It is also necessary to provide an isobaric mechanism using

Then, this invention is made in order to solve the said problem, and makes it the main subject to be able to collect|recover unnecessary resin stably, and to simplify the structure of a transfer mechanism.

That is, the resin molding apparatus according to the present invention includes a first mold in which a cavity is formed, a second mold in which a molding object is placed opposite to the first mold, the first mold and the A frame clamping mechanism for fastening a second frame, and a port provided on the second frame, a plurality of ports for accommodating a resin material, and a protrusion protruding onto a mold surface of the second frame a block and a transfer mechanism having a plurality of plungers provided inside each of the plurality of ports, and moving the plurality of plungers to inject the resin material into the cavity from the plurality of ports; It is characterized in that the port block is provided with a connecting portion for connecting the residual unnecessary resin corresponding to each of the plurality of ports, and the transfer mechanism moves the plurality of plungers by the same amount of movement.

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

According to this invention comprised in this way, while being able to collect|recover unnecessary resin stably, the structure of a transfer mechanism can be simplified.

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.
Fig. 3 is a plan view schematically showing (a) a pot block of the same embodiment, and (b) a schematic view showing unnecessary resin.
4 : is (a) a top view which shows typically the structure of the transfer mechanism of the same embodiment, and (b) right side view.
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.
It 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.
17 : 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, a second mold opposite to the first mold, on which an object to be molded is placed, and the first mold and the second mold are molded together. A port block having a mold fastening mechanism, which is provided in the second mold, a plurality of ports for accommodating a resin material, and protrusions protruding (protruding) onto the mold surface of the second mold and a transfer mechanism having a plurality of plungers provided inside each of the plurality of ports, and moving the plurality of plungers to inject the resin material into the cavity from the plurality of ports; It is characterized in that the port block is provided with a connecting portion for connecting the residual unnecessary resin corresponding to each of the plurality of ports, and the transfer mechanism moves the plurality of plungers by the same amount of movement.

With this resin molding apparatus, the unnecessary resin remaining corresponding to each of the plurality of ports can be connected by the connecting portion, so that the unnecessary resin on the pot block can be integrated after resin molding. For this reason, not only can unnecessary resin be collect|recovered stably, but the structure of the conveyance mechanism for collect|recovering unnecessary resin can also be simplified.

In addition, since a plurality of ports are communicated by the connecting portion, even if the transfer mechanism has a configuration in which the plurality of plungers are moved by the same amount of movement, the resin material injected from each port moves back and forth through the connecting portion, thereby increasing the injection pressure of the resin material. Since equalization can be achieved, it is not necessary for the transfer mechanism to have an isostatic mechanism. Thereby, the structure of a transfer mechanism can be simplified.

As a specific embodiment for connecting unnecessary resins, the first frame or the port block has a plurality of blades formed corresponding to each of the plurality of ports, and the connecting portions are adjacent to each other (adjacent). It is considered that the said unnecessary resin is connected by connecting a knife part.

Here, in order to simplify the configuration of the first frame, it is preferable that the plurality of blades and the connecting portion are formed in the port block.

In addition, with this configuration, the contact area between the pot block and the unnecessary resin is larger than the contact area between the first mold and the unnecessary resin, and the unnecessary resin is peeled off from the first mold without peeling from the pot block. Thereby, the ejector pin for contacting the unnecessary resin and peeling the unnecessary resin from the first mold can be made unnecessary.

After the unnecessary resin is recovered from the pot block, it is accommodated in a waste box. Here, when all of the plurality of unnecessary resins are connected as one body, the dead space in the waste box increases, and the storage space becomes larger than the volume of the actual unnecessary resin. For this reason, it is preferable that the said connection part divides the said some unnecessary resin into a some group, and connects.

As a specific embodiment of the transfer mechanism, the transfer mechanism does not have an equalizing pressure mechanism for making the injection pressure of the resin material uniform, and includes a fixed block to which the plurality of plungers are fixed, and the plurality of plungers by moving the fixed block. It is conceivable to provide a plunger driving unit for collectively moving the .

It is conceivable that the resin molding apparatus of the present invention further includes a conveying mechanism for discharging the unnecessary resin on the port block after resin molding, and the conveying mechanism has an adsorption unit for unnecessary resin for adsorbing the unnecessary resin.

In this configuration, in the present invention, a plurality of unnecessary resins are connected by a connecting portion to form a single mass, and the number of unnecessary resins is reduced, so that the number of unnecessary resin adsorption portions can be reduced, thereby simplifying the configuration of the conveying mechanism. can do

In the case where unnecessary resin is adsorbed and recovered, the unnecessary resin is difficult to come in close contact with the pot block, and the unnecessary resin may not be recovered. Moreover, when the unnecessary resin is removed from the pot block, the pressure in the pot becomes negative pressure, and there is a problem that the unnecessary resin is hardly separated from the pot block. In addition, there is a problem that the unnecessary resin is hardly separated from the pot block even by the frictional force between the unnecessary resin and the upper surface of the pot block.

In order to suitably solve this problem, after the conveying mechanism brings the unnecessary resin adsorption part into contact with the unnecessary resin on the port block, the transfer mechanism moves the plunger toward the first frame to cause the port It is preferable that the said unnecessary resin is peeled from a block, the said conveyance mechanism adsorb|sucks the said unnecessary resin by the said adsorption|suction part for unnecessary resins after that, and it carries out the said unnecessary resin.

With this configuration, unnecessary resin on the pot block can be stably recovered. Specifically, before the unnecessary resin is adsorbed by the unnecessary resin adsorption unit, the unnecessary resin is peeled off from the port block by the plunger, so that the unnecessary resin adsorbed by the unnecessary resin adsorption unit can be reliably recovered from the port block. can be In addition, when the unnecessary resin is peeled off from the pot block by the plunger, since the adsorption unit for the unnecessary resin is in contact with the unnecessary resin, it is possible to prevent a failure in adsorption caused by the inclination of the unnecessary resin on the pot block. Thereby, unnecessary resin on a pot block can be collect|recovered stably.

Even when the plunger is moved toward the first mold to peel the unnecessary resin from the pot block, 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 includes, before moving the plunger toward the first mold to peel off the unnecessary resin from the port block, by moving the plunger to the side opposite to the first mold, It is preferable to peel the said unnecessary resin from a plunger.

With this configuration, since the plunger and the unnecessary resin are previously peeled off, the unnecessary resin can be easily recovered.

The conveying mechanism has a molded article adsorption unit for adsorbing the resin molded article, and the unnecessary resin adsorbing unit adsorbs the unnecessary resin, and at the same time adsorbs the resin molded article by the molded article adsorption unit, It is preferable to carry out unnecessary resin and the said resin molded article.

With this configuration, the resin molded article and unnecessary resin can be transported out at once by a common transport mechanism, so that the transport time can be shortened and the configuration of the resin molding apparatus can be simplified.

In order to prevent the protrusion of the port block from interfering with the resin molded product when discharging the resin molded product, the conveying mechanism moves the molded product adsorption unit that has absorbed the resin molded product to separate it from the resin injection unit, and removes the resin molded product It is preferable to have a moving mechanism for moving it outward than the said protrusion part.

As a pre-step for stably recovering unnecessary resin, it is necessary that the resin molded article and unnecessary resin are reliably separated. For this reason, during the frame opening operation of the frame clamping mechanism for opening the first frame and the second frame, the transfer mechanism moves the plunger toward the first frame, It is preferable to separate the resin molded article and the unnecessary resin on the pot block.

In this way, since the resin molded article and unnecessary resin are separated using the plunger, they can be separated reliably.

When the port block is provided to be capable of advancing and retreating with respect to the second frame via an elastic member, the elastic member is during the frame opening operation of the frame fastening mechanism to open the first frame and the second frame. It is preferable to separate the resin molded product on the mold surface of the second mold and the unnecessary resin on the port block by moving the pot block toward the first mold by receiving the restoring force of the.

With this configuration, the resin molded article and unnecessary resin can be separated by using the elastic force of the elastic member compressed at the time of mold clamping.

In the predetermined period from the start of the mold opening operation, the port block is in a state in which the unnecessary resin is sandwiched between the first mold and the first mold by the elastic force of the elastic member, and after the lapse of the predetermined period, , it is preferable to peel the unnecessary resin from the first mold while preserving the unnecessary resin.

With this configuration, in a state where the unnecessary resin is sandwiched between the pot block and the first mold, the resin molded product and the unnecessary resin are separated, and it is prevented that the unnecessary resin suddenly falls out (departs) from the pot block at the time of their separation. can be prevented In addition, since the unnecessary resin does not come off (does not come off) from the port block when they are separated, it is possible to prevent adsorption failure caused by the inclination of the unnecessary resin on the port block or the like.

When recovering unnecessary resin after opening the mold, if the port block is not in the initial state restored by the elastic member, there is a possibility that the port block moves suddenly before and after the adsorption unit for unnecessary resin is brought into contact. Then, there is a possibility that the unnecessary resin cannot be adsorbed, resulting in poor recovery.

In order to solve this problem, the transfer mechanism moves the plunger toward the first frame before the frame opening by the frame clamping mechanism ends, until the elastic member returns to the restored initial state. , It is preferable that the said conveying mechanism makes the said adsorption|suction part for unnecessary resin contact with respect to the unnecessary resin on the said port block in the said initial state.

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

<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 is a first mold 2 (hereinafter, an upper mold (hereinafter referred to as an upper mold) which is one of the molding molds in which the cavity 2a into which the resin material J is injected is formed. 2)), and a second mold 3, which is the other side of the mold, which is disposed opposite to the upper mold 2 and is provided with a resin injection part 4 for injecting the resin material J into the cavity 2a ( Hereinafter, it has a lower frame (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 an 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).

As for the port block 41 of this embodiment, as shown to Fig.3 (a), the some port 41a is formed in a line, for example in a straight line. In addition, in FIG.3(a), although the example which formed the eight ports 41a in the one port block 41 is shown, it is not limited to this, You may change suitably. In addition, on the upper surface of the port block 41, a plurality of sword portions 41b are formed corresponding to each of the plurality of ports 41a, and a plurality of gate portions 41c are formed corresponding to each of the plurality of sword portions 41b. is formed

In addition, in the port block 41, a connection portion 41d for connecting the residual unnecessary resin K corresponding to each of the plurality of ports 41a is formed. In addition, unnecessary resin (K) is resin which remained on the pot block 41 and hardened|cured after resin molding. Moreover, the connection part 41d connects the knife parts 41b adjacent to each other, and makes a groove shape, for example. Here, the connection part 41d is formed so as to connect the four continuous knife parts 41b, and thereby, as shown in FIG. 3(b), corresponding to each of the plurality of ports 41a A plurality of unnecessary resin (K) is divided into a plurality of groups (two sets in this case) and connected. In addition, hereinafter, a plurality of unnecessary resins (K) connected to one another are also referred to as unnecessary resin bodies (KM).

The transfer mechanism 42 moves the plurality of plungers 421 in a state in which the upper frame 2 and the lower frame 3 are molded, and the resin material (J) from the plurality of ports 41a to the cavity 2a. is to inject

This transfer mechanism 42 is a structure which does not have a pressure equalization mechanism using, for example, an elastic member etc. for making the injection pressure of the resin material J uniform, The some plunger 421 is each port 41a. to move with the same amount of movement.

Specifically, the transfer mechanism 42 is provided in each of the plurality of ports 41a, as shown in FIG. 4, a plurality of plungers ( 421, a fixed block 422 to which the plurality of plungers 421 are fixed, and a plunger driving unit 423 that collectively moves the plurality of plungers 421 by the same movement amount by moving the fixed block 422. Have.

The fixing block 422 has a roughly (approximately) rectangular parallelepiped shape, and a plurality of plungers 421 are fixed in a line in a straight line on one surface (upper surface) forming the rectangular shape. The arrangement|positioning aspect of the some plunger 421 respond|corresponds to the arrangement|positioning aspect of the some port 41a. In addition, the some plunger 421 is being fixed to the fixing block 422 by a fixing screw etc., for example. Further, the plurality of plungers 421 have the same shape as each other.

The plunger driving unit 423 moves the fixed block 422 up and down with respect to the lower frame 3 to move the plurality of plungers 421 collectively with respect to the plurality of ports 41a by the same movement amount. . The plunger drive part 423 of this embodiment is provided below the fixed block 422 . Here, as the plunger drive unit 423, for example, a combination of a servomotor and a ball screw mechanism, a combination of an air cylinder or a hydraulic cylinder and a rod, or the like can be used.

In the upper frame 2, as shown in FIG. 2, the cavity 2a which accommodates the electronic component Wx of the shaping|molding object W1 and the molten resin material J is inject|poured is formed. 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 plurality of ports 41a and the cavities 2a (refer to Fig. 6). 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 plurality of plungers 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 the resin molding apparatus 100>

The operation of this resin molding apparatus 100 will be briefly described with reference to Figs. 5 to 16 . 5 to 16 show only one side (left side) of the port block 41 and omit the other side (right side), 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. 5, in the state in which the upper frame 2 and the lower frame 3 are opened, the object W1 before molding 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 plurality of ports 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. 6 . 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 plurality of plungers 421 by the same movement amount by the plunger driving unit 423 after this frame fastening, as shown in FIG. 7 , the molten resin material in the plurality of ports 41a ( J) is injected into the cavity 2a through the resin passage. At this time, the resin material J injected from each port 41a passes through the connection part 41d, and the injection pressure becomes uniform. 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).

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. 8, a plurality of plungers 421 push the unnecessary resin K. The force is reduced to a predetermined force (for example, a force of a relatively small value such that the plurality of plungers 421 and the unnecessary resin K can maintain contact without peeling). In addition, the force pushed by the plurality of plungers 421 is measured by a force sensor (including a weight sensor, a load sensor, etc.), such as a load cell (not shown) provided on a drive shaft (transfer shaft) of the plunger drive unit 423 or the like. .

And the control part COM memorize|stores the position of the plunger 421 when it becomes the force of the said predetermined value as the reference position X (refer FIG. 8). 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 423 connected to the plunger 421.

Then, before the start of the frame opening operation, the transfer mechanism 42 lowers the plurality of plungers 421 to the side opposite to the upper frame 2, as shown in FIG. ) down to the position (Y). By lowering the plurality of plungers 421 to the removal position Y, the upper surface of the plurality of plungers 421 and the lower surface of the unnecessary resin K peel. After this removing operation, the transfer mechanism 42 raises the plurality of plungers 421 to the above-described reference position X. At this time, the upper surfaces of the plurality of plungers 421 are in contact with the lower surfaces of the unnecessary resin K (state in FIG. 8 ).

Next, as shown in FIG. 10, 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. 11, 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. 11, the transfer mechanism Reference numeral 42 raises the plurality of plungers 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 some 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 some plunger 421 toward the upper frame 2, the port block 41 shows the restoring force of the compressed elastic member 43, as shown in FIG. It rises from the lower frame 3 toward the upper frame 2 by receiving a phosphorous elastic force. In other words, during the frame opening operation, while receiving the elastic force of the elastic member 43 , the port block 41 rises from the lower frame 3 toward the upper frame 2 , and at the same time, the transfer mechanism 42 operates a plurality of 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 plurality of plungers 421 start to rise from the lower frame 3 toward the upper frame 2 may coincide or may differ.

As shown in Fig. 12, the lower frame 3 is raised by the lifting of the plurality of plungers 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 mold surface of and the unnecessary resin K on the port 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. 11). 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 the 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. 11 and 12 ). 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. 13 , 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 . Moreover, the connection part 41d also contributes to the increase of the contact area of the pot block 41 and the unnecessary resin K. 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 plurality of plungers 421 toward the upper frame 2 , the protrusion 411 of the port block 41 is positioned between the mold surface of the lower frame 3 and the From the state which pinched|interposed the resin molded article W2 in , it will be in a non-contact state with the resin molded article W2.

In addition, separate from the gate brake described above, the transfer mechanism 42 engages the plurality of plungers 421 until the elastic member 43 on the lower side of the port block 41 returns to the restored initial state before frame fastening. It is raised toward the upper frame 2 (refer to FIG. 13). 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 mold opening operation as described above and separating the resin molded product W2 and the unnecessary resin K, the resin molded product W2 and the unnecessary resin K are separated by the unloader 15 as shown in Figs. The resin (K) is taken out.

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. ) type (also referred to as a pleated box type), and is superior in elasticity to the adsorption unit 15a for molded products. Moreover, the adsorption|suction part 15a for molded products and the adsorption|suction part 15b for unnecessary resins are provided in the base member 151, and are connected to suction sources, such as a suction pump which is not shown in figure. The adsorption|suction part 15a for molded articles adsorb|sucks the resin molded article W2 to the adsorption opening part 15a1 by air being sucked by the suction source. The unnecessary resin adsorption part 15b adsorbs the unnecessary resin K to its adsorption opening part 15b1 when air is sucked by the suction source.

Moreover, at least the adsorption|suction part 15a for molded products is comprised so that the movement mechanism 153 is movable in the left-right direction and the up-down direction with respect to the base member 151. As shown in FIG. In addition, the moving mechanism 153 includes a left-right movement unit having, for example, a rail and a slider for moving the molded article adsorption unit 15a in the left-right direction, and vertically moves the molded article adsorption unit 15a in the vertical direction. For example, a vertical movement unit having a rail and a slider is provided. Moreover, the unloader 15 is provided with the holding|maintenance claw 152 for holding the resin molded article W2 adsorbed by the molded article adsorption|suction part 15a, and preventing it from falling.

After the above-described frame opening operation is completed, the unloader 15 is introduced between the upper frame 2 and the lower frame 3 . And, as shown in FIG. 14, while making the adsorption|suction opening part 15a1 of the adsorption|suction part 15a for molded products contact with the upper surface of the resin molded article W2, the adsorption|suction opening part 15b1 of the adsorption|suction part 15b for unnecessary resins. ) is brought into contact with the upper surface of the unnecessary resin (K).

In this state, as shown in FIG. 15 , the transfer mechanism 42 lifts the plurality of plungers 421 and lifts the unnecessary resin K from the pot block 41 . Here, when the unnecessary resin K has a residual portion K1 remaining in the plurality of ports 41a, the residual portion K1 rises to such an extent that it does not interfere with the recovery of the unnecessary resin K. make it 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 elastically deforms and shrinks|returns while the adsorption|suction opening part 15b1 is in contact with the unnecessary resin K.

Here, the port block 41 is unnecessary, as shown in FIG. The resin K becomes one unnecessary resin body KM connected over the plurality of blade portions 41b, and the number of unnecessary resins K separated from each other on the port block 41 can be reduced. In conjunction with this, the number of the adsorption|suction part 15b for unnecessary resins can also be reduced.

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 introduced into the adsorption opening 15b1 of the unnecessary resin adsorption unit 15b. adsorbed. 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 opening part 15a1 of the adsorption|suction part 15a for molded articles.

And as shown in FIG. 16, the adsorption|suction part 15a for molded articles which adsorb|sucked the resin molded article W2 by the moving mechanism 153 is moved in the direction away from the port block 41, and the resin molded article W2. to move out of the protrusion 411 . 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, since the unnecessary resin K and the plunger 421 are peeled off before peeling the unnecessary resin K from the pot block 41 as described above, the unnecessary resin K is easy to collect|recover.

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 performs the operation of scraping off the resin adhered in the plurality of ports 41a. In other words, as shown in FIG. 18, the transfer mechanism 42 raises the some plunger 421 to a predetermined scraping-out position. 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. Thereafter, the transfer mechanism 42 raises the plurality of plungers 421 to a predetermined scraping-out position again. In this way, the resin adhering in the plurality of ports 41a is scraped out of the plurality of ports 41a.

Thereafter, the upper mold 2 , the lower mold 3 , the port block 41 , and the plurality of plungers 421 are cleaned by the cleaning mechanism provided in the unloader 15 . 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 unnecessary resin K remaining corresponding to each of the several ports 41a can be connected by the connection part 41d, after resin molding, the port block 41 ) phase unnecessary resin (K) can be integrated. For this reason, not only the unnecessary resin K can be collect|recovered stably, but the structure of the unloader 15 for collect|recovering the unnecessary resin K can also be simplified.

In addition, since the plurality of ports 41a are communicated by the connecting portion 41d, even if the transfer mechanism 42 has a configuration that moves the plurality of plungers 421 by the same amount of movement, the resin material injected from each port 41a ( By moving the connecting portion 41d back and forth by J), it is possible to equalize the injection pressure of the resin material J, so that the transfer mechanism 42 does not need to have an isostatic mechanism. Thereby, the structure of the transfer mechanism 42 can be simplified.

In addition, in this embodiment, since the connecting portion 41d divides the plurality of unnecessary resins K into a plurality of sets and connects them, when the unnecessary resins K are accommodated in the waste box, the dead space in the waste box can be reduced. Therefore, it is possible to increase the unnecessary resin (K) that can be accommodated in the waste box.

In this embodiment, the unnecessary resin K is peeled off from the pot block 41 by the plunger 421 before the unnecessary resin K is adsorbed by the unnecessary resin adsorption unit 15b, so it is unnecessary. The unnecessary resin K adsorbed by the resin adsorption unit 15b can be reliably recovered from the port block 41 . In addition, when the unnecessary resin K is peeled off from the pot block 41 by the plunger 421, the unnecessary resin adsorption portion 15b is in contact with the unnecessary resin K, so the unnecessary resin K is transferred to the pot. It is possible to prevent adsorption failure caused by inclining on the block 41 or the like. As a result, the unnecessary resin K on the pot block 41 can be stably recovered.

Here, in this embodiment, before peeling the unnecessary resin (K) from the port block 41, the plunger 421 is lowered to the side opposite to the upper frame 2, and the unnecessary resin (K) is lowered from the upper surface of the plunger 421 ( Since the lower surface of K) is peeled, it can be made easy to collect|recover the separated unnecessary resin (K).

Moreover, in this embodiment, when peeling unnecessary resin K from the port block 41, since the adsorption|suction part 15b for unnecessary resins elastically deform|transforms and shrinks while in contact with the unnecessary resin K, the pot Without interfering with the separation of the unnecessary resin K from the block 41, it is possible to maintain the state in which the unnecessary resin adsorption portion 15b is in contact with the unnecessary resin K. For this reason, unnecessary resin (K) after peeling can be adsorb|sucked reliably.

In addition, in this embodiment, since the unloader 15 has the adsorption|suction part 15a for molded articles, and the adsorption|suction part 15b for unnecessary resins, the resin molded article W2 and unnecessary resin K by a common conveyance mechanism can be carried out all at once, so that the carrying out time can be shortened, and the configuration of the resin molding apparatus 100 can be simplified.

Moreover, in this embodiment, during the mold opening operation, while receiving the elastic force of the elastic member 43, the port block 41 rises, the transfer mechanism 42 raises the plunger 421, and the resin molded article W2 Since the unnecessary resin K is separated from the resin molded product W2 and the unnecessary resin K, 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, since the plunger 421 is used to separate the resin molded product W2 and the unnecessary resin K, there is no need to increase the elastic force of the elastic member 43, and the size of the elastic member 43 is prevented, Furthermore, the enlargement of the shaping|molding die 2 and 3 or the enlargement of the unnecessary resin K are not caused.

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, since the unnecessary resin K does not fall out (does not come off) from the port block 41 at the time of their separation, it is possible to prevent adsorption failure caused by the unnecessary resin K tilting on the port block 41 or the like. there is.

In addition, in this embodiment, before the unnecessary resin adsorption|suction part 15b collect|recovers the unnecessary resin K, the transfer mechanism 42 holds the plunger ( 421) is raised toward the upper frame 2, so that the port block 41 does not rise suddenly before and after the unnecessary resin adsorption part 15b is brought into contact, and the unnecessary resin K can be recovered stably. can be

<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), before peeling the port block 41 and the unnecessary resin (K), the plunger 421 is lowered to lower the upper surface of the plunger 421 and the unnecessary resin You may peel the lower surface of (K).

Moreover, in the said embodiment, although the plunger 421 is raised when isolate|separating the resin molded article W2 and unnecessary resin K, the resin molded article only by the elastic member 43 without raising the plunger 421. It is good also as a structure which isolate|separates (W2) and unnecessary resin (K).

Moreover, in the said embodiment, although it was a structure which carries out both the resin molded article W2 and the unnecessary resin K by the common unloader 15, the conveyance mechanism which carries out the resin molded article W2, and unnecessary resin ( It is good also as a structure which has each conveyance mechanism which carries out 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 .

Further, in the above embodiment, the sword portion 41b, the gate portion 41c, and the connecting portion 41d are formed in the port block 41, but in the concave portion 2b of the upper frame 2, the sword portion, the gate portion and You may form a connection part. 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 . Therefore, an ejector pin for separating the unnecessary resin K may be provided in the upper mold 2 . Moreover, as long as it is a structure which can connect unnecessary resin K, you may provide each of a sword part, a gate part, and a connection part in either of the port block 41 or the upper frame 2 . For example, a knife portion may be formed in the port block 41, a connection portion may be formed in the concave portion 2b of the upper frame 2, and a knife portion may be formed in the concave portion 2b of the upper frame 2, A connection portion may be formed in the port block 41 .

The resin molding apparatus of the present invention is not limited to normal transfer molding, and any configuration provided with a transfer mechanism may be sufficient.

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
41b... sword
41d… connection
411… projection part
42 … transfer mechanism
421… plunger
422... fixed block
423… plunger drive
43 … elastic member
5 … frame fastener
15 … conveyance mechanism
15a… Adsorption part for molded products
15b… Adsorption part for unnecessary resin

Claims (15)

A first frame having a cavity formed therein;
a second mold on which the object to be molded is placed opposite to the first mold;
a frame fastening mechanism for fastening the first frame and the second frame;
a port block provided in the second mold, having a plurality of ports for accommodating the resin material, and having a protrusion protruding onto the mold surface of the second mold;
a transfer mechanism having a plurality of plungers provided inside each of the plurality of ports, and moving the plurality of plungers to inject the resin material into the cavity from the plurality of ports;
A connection portion is formed in the first frame or the port block to connect unnecessary resin remaining corresponding to each of the plurality of ports,
and the transfer mechanism moves the plurality of plungers by the same amount of movement. The method of claim 1,
The first frame or the port block has a plurality of blades formed corresponding to each of the plurality of ports,
The connection part, the resin molding apparatus that connects the unnecessary resin by connecting the knife parts adjacent to each other. 3. The method of claim 1 or 2,
The plurality of blades and the connecting portion are formed in the port block, a resin molding apparatus. 4. The method according to any one of claims 1 to 3,
The said connection part divides the said plurality of unnecessary resins into a plurality of sets and connects them. 5. The method according to any one of claims 1 to 4,
The transfer mechanism includes a fixed block to which the plurality of plungers are fixed, and a plunger driving unit for collectively moving the plurality of plungers by moving the fixed block. 6. The method according to any one of claims 1 to 5,
Further comprising a conveying mechanism for discharging unnecessary resin on the port block after resin molding,
The said conveying mechanism has the adsorption|suction part for unnecessary resin for adsorb|sucking the said unnecessary resin, The resin molding apparatus. 7. The method of claim 6,
After the conveying mechanism brings the unnecessary resin adsorption unit into contact with the unnecessary resin on the port block, the transfer mechanism moves the plunger toward the first mold to peel the unnecessary resin from the port block, and thereafter, The resin molding apparatus in which the said conveyance mechanism adsorb|sucks the said unnecessary resin by the said adsorption|suction part for unnecessary resins, and carries out the said unnecessary resin. 8. The method of claim 7,
The transfer mechanism includes, before moving the plunger toward the first mold to peel the unnecessary resin from the port block, moving the plunger to a side opposite to the first mold to peel the unnecessary resin from the plunger which is a resin molding device. 9. The method according to any one of claims 6 to 8,
The conveying mechanism has a molded article adsorption unit for adsorbing the resin molded article,
The resin molding apparatus which adsorb|sucks the said unnecessary resin by the said adsorption|suction part for unnecessary resins, and adsorb|sucks the said resin molded article by the said adsorption|suction part for molded articles, and carries out the said unnecessary resin and the said resin molded article. 10. The method of claim 9,
wherein said conveying mechanism has a moving mechanism which moves said molded article adsorption|suction part which adsorb|sucks said resin molded article, separates said resin injection part, and moves said resin molded article outward rather than said protrusion part. 11. The method according to any one of claims 1 to 10,
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 The resin molding apparatus which separates the resin molded article of an upper part, and unnecessary resin on the said pot block. 12. The method according to any one of claims 1 to 11,
The port block is provided to be able to advance and retreat with respect to the second frame via an elastic member,
During the frame opening operation of the frame fastening mechanism to open the first frame and the second frame, the port block receives the restoring force of the elastic member and moves toward the first frame, so that the second frame A resin molding apparatus that separates the resin molded product on the mold surface and the unnecessary resin on the pot block. 13. The method of claim 12,
The port block is in a state in which the unnecessary resin is sandwiched between the first mold and the first mold by the elastic force of the elastic member for a predetermined period from the start of the mold opening operation, and after the predetermined period has elapsed, the unnecessary resin A resin molding apparatus for peeling the unnecessary resin from the first mold while preserving the resin. 14. The method according to claim 12 or 13,
The transfer mechanism moves the plunger toward the first frame until the elastic member returns to the restored initial state before the opening of the frame by the frame clamping mechanism is completed,
The said conveying mechanism is a resin molding apparatus which makes the said adsorption|suction part for unnecessary resins contact with respect to the unnecessary resin on the said pot block in the said initial state. The manufacturing method of the resin molded article using the resin molding apparatus in any one of Claims 1-14.

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