WO1993020996A1 - Procede et appareil de moulage par transfert - Google Patents
Procede et appareil de moulage par transfert Download PDFInfo
- Publication number
- WO1993020996A1 WO1993020996A1 PCT/JP1993/000468 JP9300468W WO9320996A1 WO 1993020996 A1 WO1993020996 A1 WO 1993020996A1 JP 9300468 W JP9300468 W JP 9300468W WO 9320996 A1 WO9320996 A1 WO 9320996A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mold
- resin
- lower mold
- die
- tablet
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/0408—Injection moulding apparatus using movable moulds or mould halves involving at least a linear movement
- B29C45/0416—Injection moulding apparatus using movable moulds or mould halves involving at least a linear movement co-operating with fixed mould halves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/02—Transfer moulding, i.e. transferring the required volume of moulding material by a plunger from a "shot" cavity into a mould cavity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
- B29C45/1808—Feeding measured doses
Definitions
- the present invention relates to a transfer molding method and a transfer molding apparatus used for resin molding of a lead frame.
- the operation of setting the lead frame in the mold and removing the molded product after the resin molding from the mold is performed by loading and unloading the load frame from the side of the press device into and out of the device. Let go.
- the efficiency of the transfer molding machine is basically determined by the cycle time of the resin molding operation. Therefore, increasing the cycle time is extremely important for improving work efficiency. For this reason, devices that can operate at higher speeds are being studied.
- Fig. 19 is a graph showing the operation of each part of the conventionally used transfer molding device over time.
- the horizontal axis indicates time, and the vertical axis indicates operation.
- the graph a shows the movement of the upper and lower dies in the opening and closing directions, showing the mold opening after the resin molding and the closing of the mold after a certain period of time.
- the graph in b shows the needles for removing the molded product from the mold.
- the graph in c shows the movement of the unloader. This shows how the unloader enters the mold, checks the molded product, and returns.
- d shows the movement of the inloader, shows how the unloader removes the molded product, and then sets a new lead frame on the lower mold.
- ⁇ e shows the timing of the set of the lead frame. Show. After the lead frame is set by the in-loader, mold clamping is started. The time required for one cycle in a conventional transfer molding machine with a high-speed type machine is about 15 seconds.
- the operation of the conventional transfer molding machine is such that the unloader starts moving after the upper and lower dies have completely opened, and the inloader operates following the operation of the unloader. Each action continues as if it had started. This is because the operation of the fan loader and the inner loader must be performed with the mold opened, and as a result, there has been a problem that the cycle time cannot be effectively shortened in the conventional apparatus.
- the lower mold and the upper mold are cleaned by the fan loader, so that the mold surface fluctuates only after the mold is completely opened, so that efficient cooling cannot be performed.
- the present invention does not further reduce the mold opening / closing speed, the moving speed of the loader, and the like by organically performing the mold opening / closing operation, the removal of the molded product by the loader, and the transfer operation of the lead frame. It is another object of the present invention to provide a transfer molding method and a transfer molding apparatus capable of effectively shortening a cycle time and thereby effectively improving productivity. In order to achieve the above object, the present invention has the following configuration.
- an insert part is set in a mold, a resin tablet is supplied in a pot, and the insert part is clamped by a pair of upper and lower molds. And transferring the molten resin to the cavity with a banger in a transfer molding method, wherein the lower mold of the lower die is provided with the pot and the banger in the lower mold of the mold.
- the insert part is clamped at a molding position where the upper and lower mold dies face each other to form a resin mold, and then the mold is opened at the molding position, and the lower mold is placed beside the press mechanism.
- To remove the molded product at the lateral position set the insert parts and supply the resin tablet, and return the lower mold to the molding position after the operation. It is characterized by resin molding.
- An unloader mechanism for taking out a molded product and cleaning the lower mold and an inloader mechanism for setting the insert component to the lower mold are provided on both sides of the side position where the lower mold moves.
- the lower die is provided so as to be movable between a position above the lateral position to which the lower die moves and the retracted position on each side thereof, and before the lower die moves to the side position, the fan loader mechanism is moved to the lateral position. After the lower die has been moved to the side position in advance, immediately after the lower die has been moved to the side position, the insert parts are taken out by the fan loader mechanism, and the fan loader mechanism part moves the die surface of the lower die.
- the mold surface is cleaned when crossing and retracting to the retreat position, while the in-loader mechanism moves from the retreat position to above the lateral position with the retraction of the fan loader mechanism.
- the I Nsa preparative component characterized by cell Tsu DOO in the lower mold.
- insert parts are set in the mold die, resin tablets are supplied in the pot, and insert parts are clamped by a pair of upper and lower mold dies. And transferring the molten resin to the cavity by a plunger.
- the pot and the banger are disposed in a lower mold of a mold, and the lower mold is clamped with the insert part and a resin molding is performed between a molding position and a lateral position lateral to the molding position.
- an operation mechanism for taking out a molded product from the lower mold at the side position, setting an insert component to the lower mold and supplying a resin tablet, is provided at the side position. It is characterized by the provision of a lower die moving mechanism that slides the lower die in relation to the side bearing 3 ⁇ 4.
- an unloader mechanism for taking out a molded product and an in-loader mechanism for setting an insert component to the lower mold are provided on both sides of a side position for moving the lower mold in the same manner as the operation mechanism.
- an unloader mechanism for taking out a molded product and an in-loader mechanism for setting an insert component to the lower mold are provided on both sides of a side position for moving the lower mold in the same manner as the operation mechanism.
- the plunger attached to the lower mold is attached to and supported by a nut with a T-slot under the lower mold, and a T-slot is formed at an upper end portion, and a bratner that moves the plunger at a molding position.
- an engagement protrusion having a T-shaped cross section provided on the lower surface of the nut with the T-slot can be slid from the lateral direction into the T-groove to be engaged with the molding position and the side position.
- the lower die is provided so as to be movable between them.
- a pushing mechanism for pushing a plunger and a pushing mechanism for pushing an ejector bin to release the molded product are provided.
- the lower mold includes a mold and a lower mold base that accommodates and fixes and supports the mold.
- the lower mold is configured by a door member that can open and close one side of the lower mold base, and a plunger is mounted in a pot. The mold can be inserted from the one side while keeping the mold.
- an elongated hole is provided on the bottom surface of the lower die base, into which a platen that engages with a nut with a T-slot is slid.
- a die cleaner for cleaning the mold surface of the lower mold is provided in the unloader mechanism, and the lower mold is moved to a side position on the press mechanism side.
- An upper die cleaner is provided to enter the breathing device when it moves and to clean the upper mold surface.
- a brush for brushing the mold surface and a dust absorbing mechanism for absorbing dust from the mold surface are provided.
- the unloader mechanism is provided with a resin tablet loading mechanism for transferring the resin tablet onto the lower mold and supplying the resin tablet into the lower mold bot.
- a gate portion for removing unnecessary resin from the molded product is provided in the fan loader mechanism.
- a transfer molding apparatus having an inserter mechanism for aligning the insert parts, transferring the insert parts to a molding die, and setting the insert parts.
- the insert parts are inserted into the inserter mechanism.
- An inserter hand is provided which is chucked and transferred to a mold, and the insert parts are aligned using the inserter hand.
- the present invention is characterized in that the above-mentioned inner loader hand is provided so as to be able to control a predetermined angular rotation.
- a pre-heater is provided for pre-heating the insert components in an aligned state before transferring the insert components to the mold and setting the insert components.
- a resin tablet supply mechanism for supplying a resin tablet in accordance with the arrangement of the pot is provided to a loader for transferring the resin tablet to the mold die and putting the resin tablet into the pot.
- a tablet magazine in which resin tablets to be supplied to the pots are stacked and stored, and a storage hole for storing the resin tablets in accordance with the pot arrangement of the mold.
- a resin tablet supply holder that moves between the tablet magazine and the loader, and transfers the resin tablet from the tablet magazine to the storage hole of the resin tablet supply holder. Transfer mechanism It is characterized by having been provided.
- resin tablets are arranged in two rows in a zigzag manner in a plane arrangement on the tablet magazine.
- the transfer mechanism has three or more chuck claws for chucking the outer peripheral surface of the resin tablet at equal intervals.
- FIG. 1 is an explanatory view showing the overall configuration of a transfer molding apparatus.
- FIG. 2 is an explanatory view showing a plan layout of each part of the transfer molding apparatus.
- FIG. 3 is an explanatory view showing a configuration of a press apparatus part of the transfer molding apparatus.
- FIG. 4 is an explanatory view showing a mounted state of a plunger in a lower mold.
- FIG. 5 is an explanatory view showing a mounted state of a mold.
- FIG. 6 is a side cross-sectional view of the hung state where the mold is mounted on the lower mold base.
- FIG. 7 is a cross-sectional view showing a mechanism for preventing a plunger from falling off in a mold.
- FIG. 8 is an explanatory view showing the configuration of an unloader mechanism.
- FIG. 9 is an explanatory view of the unloader mechanism when the resin tablet supply holder is closed.
- FIG. 10 is a plan view of the inloader mechanism.
- Fig. 11 is a side view of the inlet mechanism.
- FIG. 12 is an explanatory view showing the configuration of a tablet magazine.
- FIG. 13 is an explanatory view showing an operation of chucking a resin tablet from a tablet magazine.
- Fig. 14 is a side view of the resin doublet transfer mechanism.
- Figure 15 is a front view of the resin tablet transfer mechanism.
- No. I61 is a plan view of a moving mechanism of the resin tablet supply holder.
- FIG. 17 is a side view of the mechanism for moving the resin tablet supply holder.
- FIG. 18 is a graph showing the operation of each part of the embodiment of the transfer molding apparatus.
- Fig. 19 is a graph showing the operation of each part in a conventional example of a transfer molding apparatus.
- a lower mold is horizontally slidably provided between a molding position for resin-molding an insert part and a lateral position outside the molding part, and a single resin molding is provided.
- the upper and lower mold dies face each other, they reciprocate between the molding position where resin molding is performed and the side position of the molding position, and the lead frame is moved at the position where the lower mold is pulled out from the press device. It is characterized by performing the mounting operation and performing resin molding.
- FIG. 1 shows the overall configuration of an embodiment of the transfer molding apparatus according to the present invention.
- the transfer molding device moves the lower die to the side of the press mechanism A by clamping the lead frame, which is an insert part, to mold the resin.
- the lower mold moving mechanism B, the unloader mechanism C and the unloader mechanism D that perform operations such as transfer of the lead frame at the position where the lower mold is moved to the side, and the resin loader mechanism C It is composed of a resin tablet supply mechanism section E for supplying packets.
- FIG. 2 shows a plan layout of each part of the above embodiment.
- the press mechanism A is disposed at the center of the apparatus, and the unloader mechanism C and the unloader mechanism D move the lower mold 10 which slides from the molding position of the breath mechanism A to the side position. It is arranged on both sides of the sandwich.
- the fan loader mechanism section C cleans the degate section 12 for removing gates and the like from the molded lead frame and the mold surface of the lower mold 10. It has a die cleaner 14 and a resin tablet holder 16 for supplying a resin tablet.
- Reference numeral 18 denotes a pick-up unit for storing the deframed lead frame in a magazine, and reference numeral 20 denotes a storage magazine.
- the in-loader mechanism D has a magazine 22 for accommodating a lead frame of a molded article and an alignment section 24 for aligning two lead frames face-to-face.
- the resin tablet supply mechanism E is located at the side of the press mechanism A, and a tablet magazine 3 for stacking and storing resin tablets 3
- a resin tablet supply holder 3 for supplying one resin tablet to the fan loader mechanism C With 2.
- the transfer molding apparatus of this embodiment is automatically operated by the press mechanism A, the lower mold moving mechanism B, the unloader mechanism C, the inloader mechanism D, and the resin tablet feeding mechanism E. Perform resin molding.
- the press mechanism is a portion that clamps the lead frame with the upper and lower dies of the mold, fills the cavity of the mold with resin, and molds the lead frame with resin.
- Fig. 3 shows a side view of the press mechanism.
- the press device of the embodiment is configured to drive the upper die 40 by driving a motor.
- the clamp ball screw 4 is rotated by the clamp motor 42 and the link such as the clamp toggle 46 is provided.
- the mold is clamped and opened via the mechanism.
- the mold mold of the embodiment is a multi-pot mold, and a plunger 50 is slidably mounted in each of the pots 10a of the lower mold 10.
- a pushing mechanism that pushes the plunger 50 to feed the resin from the bot 1a to the mold cavity is placed below the lower mold 10 and supports the base of the plunger 50.
- the platen 5 2 pushing up and down It has a transfer ball screw 54 for pushing the platen 52 and a drive motor 56 for driving the transfer ball screw 54.
- the lower mold 10 reciprocates between the press mechanism A and its side position.
- the lower mold 10 is configured so that the plunger 50 can be laterally moved to the side position while the plunger 50 is stored in the pot 10a. That is, the plunger 50 is fixedly supported at its base by the nut 58 with the T-slot, and the nut 58 with the T-slot is engaged with the upper part of the platen 52.
- FIG. 4 shows a method of supporting the plunger 50 by the nut 58 with the T-slot.
- the nut 58 with a T-slot has a groove 58a with a T-shaped cross section over its entire length on the upper surface, and an engagement protrusion 58b with a T-shaped cross section on its lower surface.
- the engagement projection 58 b slides laterally into the T groove 52 a provided on the upper end of the platen 52 and engages with the engagement groove.
- the nut 58 with the T-slot has the groove 58a over the entire length, it is possible to freely replace and set the mold even if the plunger 50 is disposed at a different position.
- the engagement between the groove 58a and the plunger 50 can be released, and the engagement is released and the plunger 50 is pulled upward. It is configured to be able to.
- reference numerals 60a and 60b denote guide supporting portions for supporting the lower mold 10 on the lower surface of the side edge when the lower mold 10 is moved to the side.
- a die ball screw 62 On the outer surfaces of the guide support portions 60a and 60b, there are provided a die ball screw 62 for moving the lower die 10 sideways, and the surface of the die shaft screw 62 is driven to move.
- a die shuttle motor 64 is provided.
- the lower mold 10 After the lower mold 10 is resin-molded in the press mechanism A, it is moved from the press position to its outer position by driving the die shuttle motor 64 with opening of the mold, and the lead frame is transferred at that movement position. Is performed. After operations such as transfer of the lead frame and insertion of the resin tablet are completed, the lower die 10 is driven by the die shuttle motor 64. After reaching the press position, the next resin molding is performed. In this way, the die shuttle motor 64 is driven in accordance with the pressing operation, and the lower mold 10 reciprocates in the horizontal direction.
- FIG. 1 With respect to the lower mold 10 moved to the side position of the press mechanism A, an operation of ejecting the molded article from the lower mold 1 is performed.
- 66 is a transfer ball screw for moving the plunger 50 up and down
- 6.8 is an eject pole screw for pushing the ejector bin.
- the transfer ball screw 66 is connected to a drive motor 56 installed on the press mechanism A side
- the eject ball screw 68 is connected to and driven by the eject motor 69.
- the plunger 50 When the molded product is ejected from the lower die 10, the plunger 50 is moved upward by the transfer ball screw 66, and at the same time, the ejector bin is pushed by the eject ball screw 68 to release the molded product. Typed. The plunger 50 moves by-by before the resin tablet is put into the state of receiving the resin tablet.
- FIG. 5 shows a mold 80 composing the lower mold 10 and a lower mold base 82 that accommodates the mold 80 and supports the mold by surface fixing.
- the plunger 50 is slidably mounted on the mold 10a's bot 10a, and is fixed to the nut 58 with a T-slot at its base position.
- the nut 58 with the T-slot may be provided with a plunger 5 at a predetermined position as shown in the figure without providing the groove 58a.
- the plunger 50 can be attached to and detached from the nut 58 with T-slot by gripping the tip of the plunger 50 while protruding from the upper surface of the molding F-type 80 and turning it over.
- the plunger 50 can be replaced as appropriate.
- a mold having an equal pressure mechanism is preferably used as the mold.
- the equal pressure mechanism a mechanism provided with a resin path for allowing the resin melted in the pot and the cull part to communicate between the respective pots and the cull part is preferable.
- the molded mold 80 is fitted to and attached to the lower mold base 82 by sliding and inserting the lower mold base 82 from the lateral direction. For this reason, a groove 82 a is provided on the inner wall surface of the lower die base 82 in the horizontal direction, and a dovetail portion 80 a is provided on the outer wall surface of the mold 80 to fit into the groove 82 a.
- Reference numeral 84 denotes a door member provided on the side of the receiving side of the lower die base 82 into which the molded die 8 :) is inserted.
- the door member 84 is attached to the lower mold base 82 such that the side surface of the lower mold base 82 can be opened so as to be rotatable at its base.
- a mold 8 0 is slid from the side, and a nut 8 with a T-slot 8 8 is released when mounting it on the lower mold base 8 2. a is provided.
- FIG. 5 shows a state in which the upper portion of the platen 52 slides into the long hole.
- the mold 80 reciprocates between the press mechanism A and its side position integrally with the lower mold base 82, and when the lower mold 10 returns to the press mechanism A position from the side position, the T-slot is used.
- the platen 52 engages with the T-slot 52 a of the platen 52, the platen 52 and the nut 58 with a T-slot are connected, and the plunger 50 is moved by the platen 52. It will be pushed.
- FIG. 6 is a side sectional view showing a state in which the mold 80 is set in the lower mold base 82.
- the mold member 80 can be set by opening and closing the door member 84, and the mold member 80 can be attached to and detached from the lower base 82. In this way, it is possible to easily replace and set the mold 80 according to the product.
- FIG. 7 shows a mechanism for preventing the plunger 50 from falling off the mold 80 when the mold 80 is replaced.
- Reference numeral 86 denotes an interlocking bin standing on the upper surface of the rain end of the nut with a T-slot 58, which is slid into the through hole provided in the mold type & 0 and has an outer peripheral groove formed on the outer peripheral surface.
- & 6a is provided so that a ball plunger 88 provided in the mold 80 abuts and engages with the outer peripheral groove portion 86a.
- the unloader mechanism C is located at the side of the position where the lower die 10 is pulled out. To move between. As described above, the unloader mechanism section C has the degate section 12, the die cleaner 14, and the resin tablet holder 16, and the operation of removing the molded article from the lower mold 10 and the gate from the extracted molded article are performed. Degate operation to remove unnecessary resin, etc., operation to clean the mold surface of lower mold 10, and operation to supply resin tablet to lower mold 1.
- FIG. 8 is a side view showing a state in which the anchor C is in the retracted position.
- 90 is a support frame in the unloader mechanism C
- the degate 12 is a chuck 91 attached to the support frame 90 and a process for a gate break located therebelow.
- Stage 9 consists of two stages. Processing stage 92 is fixed to the equipment and chucks The part 91 moves while being supported by the support frame 90.
- two lead frames are molded at a time, so that two sets of the chuck portions 91 are provided.
- the die cleaner 14 is disposed on the support frame 90 on the side close to the lower mold 10, and a cleaning brush 93 for brushing the mold surface of the lower mold 10 and a dust suction duct 9 are provided.
- the dust suction duct 94 is formed as a duct that opens downward in the width direction of the unloader mechanism C, and when the die reciprocates on the mold surface of the lower mold 10, the mold surface is reduced. The cleaning function is performed by sucking the resin residue above.
- 9 5 is a hose that connects to the dust collector.
- the resin tablet holder 16 is fixed to an outer surface of the lower mold 10 side by a support frame 90.
- reference numeral 96 denotes an air cylinder for driving a pusher that pushes the resin tablet from above to drop the resin tablet from inside the holder
- 97 denotes a guide for the pusher.
- Reference numeral 98 denotes a shutter plate for holding the resin tablet in the resin tablet holder 16
- reference numeral 99 denotes an air cylinder for driving the shutter plate 98 to open and close.
- the resin tablet holder 16 temporarily transfers the resin tablet stored and supplied from the resin tablet supply mechanism E to the resin tablet supply holder 32 and then transfers the resin tablet to the lower mold 10.
- the resin tablet supply holder 32 moves from the resin tablet supply mechanism E to a position immediately below the resin tablet holder 16 with the fan loader mechanism C at the retracted position. Then, at a position immediately below the resin tablet holder 16, a push-up plate is inserted from below the resin tablet supply holder 32, and the resin tablet is pushed up into the resin tablet holder 16.
- the air cylinder 99 is driven and the shutter plate 98 is inserted under the resin tablet, and the resin tablet does not drop. Will be supported.
- FIG. 9 shows a state in which the resin tablet supply holder 32 is cleaned.
- the resin tablet supply holder 32 is intended to maintain the cleanliness of the device by cleaning the inside because resin powder etc. easily adheres to the resin tablet by the transfer operation of the resin tablet. .
- the fan loader mechanism C stops moving and starts the dust collector to supply the resin tablet. Clean the holder 32.
- This method has an advantage that the mechanism can be simplified because the cleaning mechanism of the die cleaner 14 can also be used for the cleaning of the resin tablet supply holder 32.
- the resin tablet supply holder 32 After cleaning, the resin tablet supply holder 32 returns to the horizontal position of the tablet magazine 30 to prepare for the transfer operation of the next resin tablet.
- the fan loader mechanism C waits for the lower mold 10 to move above the moving position of the lower mold 10.
- the molded product is first chucked from above the mold surface by the chuck portion 91.
- the mold surface is cleaned by brushing the mold surface with the brush 93 when the unloader mechanism C moves, and by sucking the resin residue on the mold surface with the dust suction duct 94. Do. Open the shutter plate 98 when the unloader mechanism C has moved to the position of the pot 10a such that the resin tablet holder I 6 is close to it, and operate the air cylinder 96 to operate the resin tablet with the tablet pusher. And insert the resin tablet into the port 10a.
- the unloader mechanism C After returning to the retracted position, the unloader mechanism C performs a degate operation in the processing stage 92 to remove unnecessary resin adhering to the lead frame. After degate, the lead frame is picked up by the big part 18 and stored in the storage magazine 2. In this way, a series of processing operations when the unloader mechanism C reciprocates between the upper position of the lower mold 10 and the retracted position are performed.
- the unloader mechanism C cleans the mold surface of the lower mold 10 as described above, but the lower mold 10 moves laterally to the upper mold 40 as shown in FIG. Afterwards or during the movement, the upper die cleaner 100 enters the press machine and cleans.
- the positioning block for positioning the mutual positions of the upper mold and the lower mold by uneven fitting does not interfere with the cleaner. It can be installed at a location.
- the positioning block is located at the center of each side of the mold to prevent displacement due to thermal expansion. Therefore, if the projection of the positioning block is on the path along which the cleaner moves, it may hinder the cleaning.
- positioning blocks 10 b, 10 b are protruded from the mold surface at the longitudinal end of the molding die, and the width direction in which the brushes 93 pass is provided.
- the end of the upper mold is provided with a concave portion 10c into which the positioning block of the upper die is fitted, the upper die is formed with a concave portion in the longitudinal direction of the mold, and the positioning block is formed in the width direction.
- the inserter mechanism D performs an operation of aligning and supplying the lead frame of the insert component to the lower mold 10.
- reference numeral 101 denotes an alignment rail for supporting a lead frame sent out from a magazine 22; 102, an in-loader hand for checking two read frames; Is an inductor actuator for transferring the lead frame to a position above the lower die 10, and 106 is a preheater.
- FIG. 0 and FIG. 11 show a plan view and a side view of the in-loader mechanism D.
- FIG. 22 is a magazine containing lead frames, which are installed in parallel.
- the alignment rail 101 is set in accordance with the opening surface of the front of the magazine 22. As shown in FIG. 11, the height of the lead frame sent out of the magazine 22 by the vertical motor 1 8 as shown in FIG. It is moved up and down according to.
- a pusher 112 pushed by the cylinder 111 is disposed behind the magazine 222.
- the pusher 1 1 2 moves up and down in conjunction with the alignment rail 101, trades the alignment rail 101 from inside the magazine 22, and pushes out the lead frame.
- Upper and lower rollers 1 1 4 and feed rollers 1 1 6 are provided on the alignment rail 1 0 1, and the end of the lead frame extruded from the magazine 2 2 is sandwiched between the upper and lower rollers 1 1 4, and the motor 1 1 &
- the upper and lower rollers 114 and the feed rollers 116 are driven to rotate, and the lead frame is set on the alignment rails 101.
- the in-loader hand 102 is located above the alignment rail 101, and is supported via a surface-actuator 120 and a vertical-actuator 122. As shown in FIG. 11, the in-loader hand 102 has a chuck portion 102a on the lower surface thereof for supporting the side portion of the lead frame by chucking it from both sides. Two sets of chucks 102a are provided at a predetermined interval so that two lead frames can be checked in parallel.
- the yellow heater 106 is provided to heat the lead frame before it is transferred to the lower die 10 so that two lead frames can be placed.
- the alignment rail 101 descends to the height position of the lead frame to be carried out of the magazine 22, and the lead frame is pushed out by the pusher 112. It is positioned at the position where it comes into contact with the collar on the alignment rail 101. Alignment rail 101 is below the in-loader hand 102. , And passes the lead frame to the inner hand 102. Align rail 101 descends again to accept the next read frame. On the other hand, during this time, the rotary actuator 120 drives the inner loader 102, and the rotary actuator 120 rotates 180. Rotate. The lead frame received by the alignment rail 101 is chucked by the other chuck portion 102 a of the in-loader hand 102.
- the two lead frames are supported facing each other.
- the lead frame supported by the inner hand 102 is transferred onto the preheater 106.
- the lower die 10 is pulled from the pre-heater 106 at a predetermined timing and pulled out of the breathing mechanism A. Transferred to
- the transfer operation of the lead frame by the in-loader mechanism D is performed after the operation of loading the lower die and the resin tablet by the in-loader mechanism C is completed.
- the vertical actuator 122 operates to set the lead frame on the lower mold 10.
- the resin molding device of the lead frame there are various methods for aligning the lead frame with the lead frame facing each other. For example, there are various methods, such as using a g-turn table. It is characterized by using an inner loader hand 102 that transfers the material.
- the resin tablet supply mechanism E performs the operation of supplying the resin tablet to the unloader mechanism C as described above, and the tablet magazine 30 is arranged at a lateral position of the press mechanism A, and the tablet tablet is provided.
- a transfer mechanism for transferring the resin tablet from the magazine 30 to the resin tablet supply holder 32 is provided.
- the tablet magazines 30 are arranged in a row as shown in FIG. Place four.
- Resin tablet supply holder 32 that transports resin tablet from tablet magazine 30 to fermenter mechanism C, accommodates resin tablet in accordance with the distribution position of lower mold 10 pot 10a.
- the resin tablet supply holder 32 is provided so as to linearly reciprocate between the lateral position of the tablet magazine 30 and the ferrule machine C.
- FIG. 12 (a) is a plan view of the tablet magazine 30.
- the three tablet magazines store resin tablets in two rows, but the resin tablet is arranged in a zigzag shape to make effective use of the storage space.
- a cutting plate 130 a is provided in a vertical direction in accordance with the zigzag arrangement of the resin tablet. Resin tablets are stored in a stack inside each partition plate 130a.
- FIG. 12 (b) is a plan view of a lift plate 132 arranged in the tablet magazine 30.
- the lift plate 13 2 pushes up the resin tablet in the tablet magazine 30 so that the resin tablet can be chucked in order from the top.
- the lift plate 13 2 has a shape in which squares are arranged in a zigzag arrangement in accordance with the arrangement of the partition 1 130 a.
- the lift plate 13 2 is driven up and down by an elevator disposed below the tablet magazine 30 to lift the resin tablet supported by the lift plate 36.
- an elevator disposed below the tablet magazine 30 to lift the resin tablet supported by the lift plate 36.
- At the diagonal corner of the lower surface of the magazine there is a hole 13 through which the push-up head attached to the elevator is inserted. The push-up head is inserted into this hole, and the lift plate 1 3 2 Push up.
- the bottom of the tablet magazine 30 is provided with only a hole through which the push-up rod can pass. This is to prevent the resin powder from dropping from the hole and increase the cleanliness of the device.
- Fig. 13 shows how to check the pushed resin tablet.
- the resin tablet is configured to be chucked by three chuck claws 13a, 13b, and 13c.
- the resin tablet can be accurately centered and chucked.
- Centering and chucking the resin tablet in this way has the advantage that the tablet magazine 30 can be used to some extent for general-purpose products. That is, according to this method, if the resin tablet can be accommodated in the partition plate 130a, even if the resin tablet has a somewhat different size, it can be accurately positioned to the resin tablet supply holder 32. Can be transferred.
- the top plate of the tablet magazine 30 is provided with a round hole having the maximum diameter in the partition width of the partition plate 130a.
- FIG. 14 shows a state in which the resin tablet transfer mechanism is viewed from the side of the tablet magazine 30, and FIG. 15 shows a state in which the mechanism is viewed from the front.
- the mechanism for transferring the resin tablet is to check the resin tab 'let from the tablet magazine 30 and transfer it to the resin tablet supply holder 32 located at the side of the tablet magazine 30.
- the resin tablet is supplied to the resin tablet supply holder 32 by fixing the position of the holder 32 and controlling the movement of the chuck of the resin tablet transfer mechanism in the XY direction. The resin tablets are transferred in order.
- the resin tablet transfer mechanism is located above the tablet magazine 30 and the chuck tabs 13 to hold the resin tablet 5 are provided.
- the driving section 1338 has chuck claws 1336a and 136.136. To The upper part of each check claw 1 36 is engaged with the cam ⁇ 140 supported movably and slidably from the center, as shown in the 15th surface. The opening / closing operation is performed by driving the force plate 140 with a belt by a chuck drive actuator 142.
- the vertical movement mechanism is constituted by a vertical movement cylinder 144 supporting a drive section 138 in FIG. 15 and a guide 146.
- an X-direction drive motor 150 is attached to the side surface of the support plate 148, and a pulley 155 is attached to the & axis of the X-direction drive motor 150.
- the chuck mechanism is supported with a sufficient interval to move in the X direction.
- ⁇ ⁇ Attach the burry 1 154 to the side of the 148, and hang the belt 156 between the burries 1 5 and 15.
- the vertical movement cylinder 144 is fixed to the belt 156.
- 15 & is a direct power input for guiding the chuck mechanism in the X direction.
- the belt 156 moves, and accordingly, the chuck mechanism such as the check pawls 136 moves in the X direction.
- the vertical movement cylinders 14 move the chuck mechanism up and down at the position where the tablet magazine 30 is set and the position where the resin tablet supply holder 32 is set, respectively. Supply of resin tablet * Transfer operation to rudder 32 is performed.
- the Y-direction moving mechanism attaches a ball screw 160 in the Y direction of the main body, that is, a direction orthogonal to the X direction. 6 to drive the belt.
- the Y-direction drive motor 16 is mounted on the integrated block 1 & 5 on the ball screw side, and the support plate 1 48 is mounted on the slide block 1 S 8 that guides the straight guide 16 6.
- the entire X-direction movement mechanism and up-down movement mechanism move, and the chuck claw 1 36 is moved in the X, Y, and Z directions (up-down direction). Can be lost.
- the resin from the tablet magazine 30 can be controlled.
- the resin tablet is automatically transferred to the tablet supply holder 32.
- FIG. 16 and FIG. 17 show the mechanism for moving the resin tablet supply holder 32.
- FIG. 16 is a plan view of the moving mechanism
- FIG. 17 is a side view. In the figure, the side on which the tablet magazine 30 is installed is shown on the right side of the figure, and the side on which the fan loader mechanism C is installed is shown on the left side of the figure.
- reference numeral 100 denotes a housing hole for the resin tablet, which is provided in accordance with the arrangement of the bot 10a of the lower die 10.
- the storage holes 170 are provided so as to penetrate the resin tablet supply holder 32 in the vertical direction, and are provided so that the storage holes 170 communicate with the slit holes 172.
- the slit holes 172 are for allowing the pusher plate 174 to enter when transferring the resin tablet to the resin tablet holder 16 of the unloader mechanism C. There is a hook inside the storage hole 1 ⁇ 0 to keep the resin tablet from falling.
- Resin tablet supply Lined holder 3 2 Replace with different products. For this reason, the resin tablet supply holder 32 is detachable from the holder frame 1 ⁇ 6.
- the holder frames 1 to 6 are installed below the resin tablet supply holder 32, and are moved in the horizontal direction by belt driving.
- the belts 1 ⁇ 8 are stretched between pulleys installed at both ends of the range in which the resin tablet supply holder 32 moves, and the pulleys 180 are driven by the drive motor 182 in a plane motion.
- reference numeral 184 denotes a clamper for fixing the holder frame 176 to the belt 178.
- the clamper 184 presses the belt 178 between the side of the holder frame 176 and the belt 178 moves with the holder frame 176 It is configured to be.
- the holder frame 176 engages with the linear guide on its outer surface, and is guided horizontally.
- the resin tablet supply holder 3 2 is transferred to the storage hole 1 0 0 by the resin tablet transfer mechanism described above in the position of the tablet magazine 30, and the resin tablet is transferred by the drive motor 18 2.
- the belt 178 When the belt 178 is driven, the belt 178 moves to a position below the fan loader mechanism C, and is transferred to the resin tablet holder 16 at the moving position.
- the resin tablet supply holder 32 After the resin tablet is transferred, the resin tablet supply holder 32 returns to the side position of the tablet magazine 3 to supply the resin tablet on the next surface.
- the resin tablet holder 16 supports the resin tablet in accordance with the bot position of the lower die 10, and the un-feeder mechanism C moves onto the lower die 10, and is inserted into each bot 10 a.
- the resin tablet is loaded.
- the tablet magazines 30 are arranged in two rows horizontally. However, if the magazines are arranged in two rows in this manner, the transfer of the magazine in the first row is completed and the transfer of the magazine in the second row is performed. Since the empty magazine in the first row can be replaced at the point where the process has been moved to, resin tablets can be continuously supplied.
- the transfer molding apparatus of the embodiment automatically controls the above-described components such as the breath mechanism A, the lower mold moving mechanism B, the unloader mechanism C, the inloader mechanism D, and the resin tablet supply mechanism E. To perform continuous resin molding.
- FIG. 18 shows the operation state of each part of the apparatus of the embodiment over time. First, when resin filling into the cavity of the mold die is completed and resin molding is completed, the clamp motor 42 is driven and the upper die 40 starts to rise.
- graph B shows the operation of the upper mold 40.
- the lower mold 10 When the upper mold 40 starts to ascend, the lower mold 10 forms in the breath mechanism A. Start moving from the shape position to the side position. Graph C shows the movement of the lower mold 10.
- the lower die 10 can start moving as soon as the upper die 40 and the positioning block are disengaged from each other. It is controlled as follows.
- the upper die die cleaner 100 enters the press after the lower die 100 moves laterally or while moving, and cleans the die surface of the upper die 40.
- the unloader mechanism C moves to a position above the side position and waits for the completion of the movement of the lower mold 10 before the lower mold 10 moves to the lateral position.
- Graph D shows the unloading operation by the unloader mechanism C.
- the removal operation of the molded product by the unloader mechanism C is performed immediately after the lower die 10 is moved.
- Graph E shows the movement operation of the fan loader mechanism C, and shows that during the movement, the cleaning operation of the mold surface of the lower mold 10 and the operation of loading the resin tablet are performed.
- Graph F shows the timing of loading the resin tablet. After loading the resin tablet, the fan loader mechanism C returns to its original position, and the gate of the molded product and the transfer of the resin tablet from the resin tablet supply mechanism E are performed.
- Graph G shows the reciprocating operation of the in-loader mechanism D.
- Graph H shows the setting operation of the lead frame by the inloader mechanism D.
- the lower mold 10 starts to return to the press device side.
- the upper mold 40 starts to descend.
- the movement of the in-loader mechanism D and the movement of the lower mold 10 do not cause any interference, so they can be performed at the same time, and the upper mold 40 can start to descend independently of the in-loader mechanism D.
- the upper mold 40 stops descending and lowering when the lower mold 10 returns to the resin mold position, clamps the lead frame at the timing, and proceeds to the resin filling operation.
- the lower mold 10 is moved to the side of the press apparatus to perform operations such as taking out a molded product, transferring a lead frame, and loading a resin tablet. Automatically performs resin molding operation.
- one cycle of the resin molding operation by the above operation can be completed in 9 seconds. This operation time is about 6 seconds shorter than the operation of the 19 m conventional equipment, achieving an effective speedup of the transfer molding equipment.
- the cycle time can be reduced in this way is that the lower die 10 can be moved from the molding position to the outside position, and the conventional press machine is operated with the unloader and the intruder. In other words, the fan loader operation and in-loader operation can be performed efficiently.
- the unloader inlet is inserted. There is no need to wait for the lower and upper molds to open completely.
- the conventional equipment it is necessary to provide a large space for inserting the loader in order to allow the loader to enter the press, and the upper or lower die must have a long moving stroke and the die must be moved. Takes time for.
- the lead frame is transferred at a position different from the resin molding position, etc., it is necessary to configure each operation unit with a margin in the arrangement space of the fan loader mechanism C and the pin loader mechanism D.
- the molded product can be easily removed and the lead frame can be easily set.
- the configuration of the unloader mechanism section C and the pin loader mechanism section D can be set appropriately according to the model.
- the arrangement of the unloader mechanism C and the unloader mechanism D may be reversed from that of the embodiment.
- the lead frame is moved in a clean state.
- the set of the lead frame and the resin tablet is performed by one loader.
- the resin tablet and the lead frame are moved close to each other, resin powder, etc. Makes the lead frame easily contaminated.
- the loader time would be long and the cycle time of the equipment would be inevitably long.
- the resin tablet can be efficiently supplied and the lead frame can be set efficiently by making the fan loader mechanism C and the unloader mechanism D work organically.
- the lower mold 10 is described as an example of a multi-pot type.
- the present invention can be applied to a mold other than the multi-pot type.
- the resin mold of the frame has been described, the present invention can be similarly applied to various molded products other than those for semiconductor devices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93908082A EP0594863B1 (en) | 1992-04-13 | 1993-04-12 | Method of transfer mold and apparatus for transfer mold |
KR1019930703817A KR0137851B1 (ko) | 1992-04-13 | 1993-04-12 | 트랜스퍼 성형 방법 및 트랜스퍼 성형 기계 |
US08/157,114 US5770128A (en) | 1992-04-13 | 1993-04-12 | Method of transfer molding and a transfer molding machine |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11969792A JP3200151B2 (ja) | 1992-04-13 | 1992-04-13 | トランスファモールド方法およびトランスファモールド装置 |
JP4/119697 | 1992-04-13 | ||
JP4/252114 | 1992-08-27 | ||
JP25211492A JP3144714B2 (ja) | 1992-08-27 | 1992-08-27 | トランスファモールド装置 |
JP4/317810 | 1992-11-02 | ||
JP4317810A JPH06143327A (ja) | 1992-11-02 | 1992-11-02 | リードフレームの整列装置 |
JP4/349916 | 1992-12-01 | ||
JP4/349917 | 1992-12-01 | ||
JP34991692A JP3200211B2 (ja) | 1992-12-01 | 1992-12-01 | 半導体封止装置 |
JP4349917A JPH06166049A (ja) | 1992-12-01 | 1992-12-01 | 樹脂タブレットの供給装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993020996A1 true WO1993020996A1 (fr) | 1993-10-28 |
Family
ID=27526852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1993/000468 WO1993020996A1 (fr) | 1992-04-13 | 1993-04-12 | Procede et appareil de moulage par transfert |
Country Status (5)
Country | Link |
---|---|
US (1) | US5770128A (ja) |
EP (1) | EP0594863B1 (ja) |
KR (1) | KR0137851B1 (ja) |
AU (1) | AU3904393A (ja) |
WO (1) | WO1993020996A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109573609A (zh) * | 2019-01-14 | 2019-04-05 | 东莞市臻精智能科技有限公司 | 一种真空吸附装置及应用其的自动贴合设备 |
Families Citing this family (17)
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TW257745B (ja) * | 1993-07-22 | 1995-09-21 | Towa Kk | |
US6007316A (en) * | 1993-07-22 | 1999-12-28 | Towa Corporation | Apparatus for molding resin to seal electronic parts |
NL1002690C2 (nl) * | 1996-03-22 | 1997-09-23 | Fico Bv | Mal-samenstel en werkwijze voor gebruik van mal-samenstel. |
NL1002691C2 (nl) * | 1996-03-22 | 1997-09-23 | Fico Bv | Pers voor het omhullen van electronische componenten en werkwijzen voor het gebruik van de pers. |
NL1003183C2 (nl) * | 1996-05-22 | 1997-11-25 | Fico Bv | Inrichting voor het verenkelen en verplaatsen van omhulmateriaaldelen en inrichting en werkwijze voor het groeperen, postioneren en verplaatsen van omhulmateriaaldelen. |
US5925384A (en) * | 1997-04-25 | 1999-07-20 | Micron Technology, Inc. | Manual pellet loader for Boschman automolds |
TW509615B (en) * | 2000-04-21 | 2002-11-11 | Apic Yamada Corp | Resin molding machine and resin tablet feeding machine |
TWI293599B (en) * | 2001-11-30 | 2008-02-21 | Apic Yamada Corp | Compression molding machine |
US6808661B2 (en) * | 2001-12-11 | 2004-10-26 | Asm Technology Singapore Pte Ltd. | Method for encapsulating leadframe-mounted integrated circuits |
KR100455388B1 (ko) * | 2002-05-28 | 2004-11-06 | 삼성전자주식회사 | 금형에의 이형제 처리를 자동화한 반도체 소자 성형 장비 |
US8342837B2 (en) * | 2006-09-19 | 2013-01-01 | Dai-Ichi Seiko Co., Ltd. | Resin sealing apparatus |
US8151995B2 (en) * | 2008-02-04 | 2012-04-10 | Texas Instruments Incorporated | Methods and apparatus to prevent mold compound feeder jams in systems to package integrated circuits |
ES2897736T3 (es) | 2010-08-13 | 2022-03-02 | Greene Tweed Inc | Composite de fibras termoplásticas con carga de elevado volumen de fibras y procedimiento de fabricación del mismo |
JP6065123B2 (ja) * | 2013-10-02 | 2017-01-25 | 村田機械株式会社 | プレス機械及びプレス方法 |
CN106426748B (zh) * | 2016-12-15 | 2018-08-17 | 东莞市启时智能科技有限公司 | 一种注塑自动上料机构 |
CN111231204B (zh) * | 2020-01-10 | 2021-08-31 | 滁州信达自动化设备制造有限公司 | 一种运输模具的换模小车 |
CN111168919B (zh) * | 2020-01-10 | 2021-10-01 | 滁州信达自动化设备制造有限公司 | 一种平移式自动换模机构 |
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1993
- 1993-04-12 KR KR1019930703817A patent/KR0137851B1/ko not_active IP Right Cessation
- 1993-04-12 AU AU39043/93A patent/AU3904393A/en not_active Abandoned
- 1993-04-12 US US08/157,114 patent/US5770128A/en not_active Expired - Fee Related
- 1993-04-12 WO PCT/JP1993/000468 patent/WO1993020996A1/ja active IP Right Grant
- 1993-04-12 EP EP93908082A patent/EP0594863B1/en not_active Expired - Lifetime
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JPS6270011A (ja) * | 1985-09-24 | 1987-03-31 | Matsushita Electric Works Ltd | リ−ドフレ−ム供給・取り出し装置 |
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JPH01146712A (ja) * | 1987-12-02 | 1989-06-08 | Oki Electric Ind Co Ltd | モールドプレス装置 |
JPH02214629A (ja) * | 1989-02-15 | 1990-08-27 | Toshifumi Wakayama | トランスファー成形機 |
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CN109573609A (zh) * | 2019-01-14 | 2019-04-05 | 东莞市臻精智能科技有限公司 | 一种真空吸附装置及应用其的自动贴合设备 |
Also Published As
Publication number | Publication date |
---|---|
US5770128A (en) | 1998-06-23 |
KR0137851B1 (ko) | 1998-05-01 |
EP0594863B1 (en) | 1998-07-08 |
EP0594863A1 (en) | 1994-05-04 |
EP0594863A4 (en) | 1995-05-24 |
AU3904393A (en) | 1993-11-18 |
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