JPH0124936Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a mold assembly device in an automatic press machine for cutting IC lead frames.

The automatic press equipment for cutting and molding IC lead frames consists of a mold for removing resin from a lead frame formed by arranging multiple ICs in parallel, a mold for cutting tie bars, and a mold for cutting leads. Since there are several molds, such as those for cutting, it is troublesome to assemble the product to the mount, and maintenance after it is set on the mount is also troublesome. This troublesomeness is particularly noticeable in the upper mold which is set on the lower surface of the upper mold mount.

The present invention has been made to solve this problem, and aims to make it easier to assemble and remove the upper mold from the upper mold mount.

In order to achieve this purpose, the mold assembly device in the automatic press device for cutting IC lead frames according to the present invention includes a lower mold mount fixed to the machine body and a lifting/lowering operation for the lower mold mount. The upper mold mounting base provided on the fuselage is arranged so that the supply port side of the IC lead frame to be cut by the upper mold and lower mold installed thereon or the discharge port side of the remaining material faces one side of the fuselage. A fitting groove is installed on the lower surface of the upper mold mounting base along the direction of transfer of the IC lead frame, and the resin is cut. A punch, a punch for cutting a tie bar, a punch for cutting a lead, and other molds are integrally connected and assembled to a base that fits in and out of the fitting groove, and the base is inserted into the fitting groove. The upper mold is assembled to the upper mold mount by fitting the upper mold into the upper mold mount and fixing it to the upper mold mount.

Next, an example of implementation will be described in detail with reference to the drawings.

In Fig. 1, 1 is the body of an automatic press machine A for cutting IC lead frames, 2 is a lower die mount fixedly mounted on the machine 1, and 3 is a lower die mount that is vertically opposed to the lower die mount 2. The upper mold mounts 4 are disposed above the lower mold mount 2 and mounted on the machine body 1 so as to be raised and lowered relative to the lower mold mount 2. Multiple posts installed on the fuselage 1, 5 is an IC lead frame 6 to be supplied
(Fig. 11) shows a rail serving as a transfer path.

The fuselage 1 has a frame structure in the form of a square machine casing, has machine walls on all four sides, and has wheels 10 for movement and supporting legs 11 for fixing the position on the lower surface side.

As shown in FIG. 2, the lower mold mount 2 and the upper mold mount 3 serve as the transfer path for the upper mold 7 and lower mold 8 (FIGS. 6 and 7) to be assembled thereto. A cutting process is performed to cut the IC lead frame 6 supplied from the supply port side 5a of the rail 5 and separate the IC...60, thereby transferring the remaining material 61 of the IC lead frame 6 to the discharge port side 5b of the rail 5. It is mounted on the upper surface side of the machine body 1 so that the discharge port side 5b faces one side of the machine body 1 when discharging.

The upper mold mount 3 has a through hole provided at its peripheral edge, which is inserted into the upper end of a post 4 installed on the fuselage 1, and is supported by a locking flange 4a provided on the post 4. By fixing the spacer 30 and the tightening screw 31 to tighten it, it is integrally assembled and supported at the upper end of the post 4 (FIG. 3).

In addition, posts 4 for raising and lowering the upper mold mount 3 are fitted into the lower mold mount 2 at three locations: at both front and rear ends on one side and at the front and rear intermediate portions on the other side. A through hole has been opened (Figure 4). and,
The posts 4 supporting the upper mold mount 3 fit into the through holes of the lower mold mount 2 so as to be able to slide vertically, and each upper end portion protruding downward from the lower mold mount 2 has a , as shown in FIG.
0 is raised and lowered by the operation of the raising and lowering mechanism w, so that they move up and down synchronously, and act to raise and lower the upper die mount 3.

As shown in FIG. 5, the elevating mechanism w moves the bearing support members 41, 41, which are assembled and supported to the fuselage 1 by means of the assembly seats 41a, 41a, so that the axis of the bearing support parts 41b, 41b thereof is aligned. Align the wires and install them in parallel in two rows, and connect these bearing support members 4.
The shaft 42 is supported on the bearing support parts 41b, 41b of 1 and 41 via bearings, and the shaft 4
A crank part 42a is formed in the middle part of the two, and the upper end of the reciprocating rod 43 whose base end is fitted into the crank part 42a is connected to the above-mentioned lifting table 40 and the connecting shaft 44.
By connecting one end of the shaft 42 to the output shaft of the motor M through the conduction pulleys 45, 45 and the conduction belt 46, the shaft 42 rotates due to the operation of the motor M, thereby creating a reciprocating motion. The rod 43 reciprocates up and down, lifting the platform 4
0 is moved up and down to raise and lower the three posts 4. However, the shaft 42 mentioned above
By changing the crank part 42a and the reciprocating rod 43 connected thereto to a cam foil, the lifting platform 40 can be moved up and down by the rotation of the cam foil.
It may be designed as appropriate, such as when raising and lowering the 0. In addition, 47 is a buffer spring provided between the above-mentioned bearing support member 41 and the lifting platform 40, and 48... is a post 4 fixedly provided on the fuselage 1 side.
It is a guide tube for...

As shown in FIG. 6, a fitting groove 3a having a dovetail cross section is formed on the lower surface of the upper die mounting base 3 by the rail 5 described above.
The upper die mounting base 3 is formed to penetrate in the front-rear direction (vertical direction in FIG. 2) along the transfer direction of the IC lead frame 6, and the starting end side of the fitting groove 3a in the transfer direction (rail 5 A stopper 3b is installed on the supply port side 5a) (Fig. 7), and the terminal end side in the transfer direction is left open to the rear side (upper side in Fig. 2) of the machine body 1, and the insertion port 3c is installed. It is formed in

Then, the upper mold 7 is assembled to this upper mold mounting base 3.
The fitting portion 7 is slidably fitted into the fitting groove 3a by being inserted through the insertion opening 3c of the fitting groove 3a.
0a is formed on the upper surface side, and on the lower surface side of the base 70, punches 71, 71 for dropping the resin from the IC lead frame, punches 72, 72 for cutting the tie bars, and punch 73 for cutting the leads are formed. , 73, etc. are combined in pairs and are integrally connected in parallel in the above-mentioned transfer direction to form a cassette shape integral with the base 70 (FIG. 8). Then, by inserting the fitting part 70a on the upper surface side of the base 70 into the dovetail-shaped fitting groove 3a on the lower surface side of the upper mold mounting base 3, from the insertion opening 3c. Fit into the fitting groove 3a, and drop the connecting pin 75 into the set hole 3d and set hole 70b for positioning that have been installed in the upper mold mount 3 and the base 70 in advance, and then insert the connecting pin 75 into the upper mold mount 3. The upper mold 7 is then fixed in a predetermined position, thereby allowing the upper mold 7 to be assembled to the upper mold mount 3 (FIGS. 7 and 9). 76 is a locking screw for locking the base 70 of the upper mold 7 assembled to the upper mold mount 3 to the upper mold mount 3; 77 is a lock screw for assembling the upper mold 7 to the upper mold mount 3, or for attaching the upper mold 7 to the upper mold mount 3; This is a handle rod attached to the rear end surface of the base 70 of the upper mold 7 in order to facilitate the operation of removing it from the base 3.

Note that this handle rod 77 may also be provided on the front end surface side of the upper die 7. In addition, an insertion opening 3c of a dovetail-shaped fitting groove 3a installed on the lower surface side of the upper die mounting base 3.
By making the stopper 3b removable from the upper die mounting base 3 or by providing it on the rear end side of the fitting groove 3a, the open opening on the front end side of the fitting groove 3a can also be used as an insertion opening. Alternatively, it may be formed with an open opening on the front end side.

A fitting groove 2a having a channel-shaped cross section is formed on the upper surface side of the lower mold mount 2 so as to pass through the lower mold mount 2 back and forth, and at the bottom of the fitting groove 2a. , in the part near the front end of the lower mold mounting base 2,
A stopper 2b is removably installed, and like the fitting groove 3a of the upper die mounting base 3 described above, the stopper 2b is removably installed.
An open opening on the rear end side of the fitting groove 2a located on the opposite side from b is formed as an insertion opening 2c. This insertion port 2
c is also formed by providing the stopper 2b on the rear end side of the fitting groove 2a with an open opening on the front end side, or when the stopper 2b is removed and the open openings on both the front and rear ends are used as insertion openings. In some cases,

Then, the lower mold 8 is assembled to this lower mold mounting base 2.
Forms a longitudinally long base 80 having a fitting part 80a on the lower surface side which is slidably fitted into the fitting groove 2a from the insertion opening 2c of the fitting groove 2a. , each punch 71, 71, 72, 72, 73, 7 of the above-mentioned upper die 7 is placed on the upper surface side of the base 80.
The resin cutting dies 81, 81, the tie bar cutting dies 82, 82, and the lead cutting dies 83, 83 corresponding to No. 3 are assembled in pairs in parallel in the front-rear direction and integrally assembled, Base 80
(Fig. 10), and rails 5 are attached to both the front and rear ends of the base 80 (Fig. 10).
front end side (supply port side 5a) and rear end side (discharge port side 5a)
(b) are integrally assembled, respectively, and are formed in a state in which they are integrally connected to the rail 5 (FIG. 7). This lower mold 8 is connected to the fitting portion 8 of its base 80.
0a into the insertion hole 2c of the fitting groove 2a of the lower die mounting base 2.
Insert it from the side and fit it, then drop the connecting pin 85 into the positioning set holes 80b and 2d formed in advance in the base 80 and the lower mold mounting base 2, and fix it in a predetermined position. By doing so, it is assembled and set on the lower die mounting base 2. Reference numeral 86 designates a lock screw for locking the lower mold 8 set in the lower mold mounting base 2 in the set state, and 87 designates a handle provided on the lower mold to facilitate attachment and removal of the lower mold 8.

The mold assembling device in the automatic press device for cutting IC lead frames according to the present invention configured as described above includes a punch 71 for cutting resin 62 (FIG. 12) from IC lead frame 6, and a tie bar 63 for cutting. punch 72 and reed 6
A mold (upper mold) such as a punch 73 for cutting 4 is integrally connected to a base 70 that is slidably fitted into a fitting groove 3a provided on the lower surface of the upper mold mount 3. The upper mold mount 3 is formed into a cassette shape by fitting the base 70 into the fitting groove 3a provided on the lower surface of the upper mold mount 3 and fixing it in a predetermined position.
Since it is designed to be assembled and set,
During maintenance, by making the upper mold 7 together with the base 70 and pulling it out in a cassette shape from the fitting groove 3a of the upper mold mounting base 3, repairs and inspections can be easily performed outside the machine. After finishing, insert the base 70 into the fitting groove 3a of the upper mold mounting base 3.
By inserting it into the upper mold mounting base 3, it can be assembled and set. And this base 70
Since the direction in which the IC lead frame 6 is inserted and removed is along the transfer direction in which the IC lead frame 6 is supplied to the mold and transferred inside the mold, the IC lead frame 6
This is removed by pulling it out of the body 1 and pushing it into the body 1 at the supply port side where it is supplied to the mold, or at the periphery of the machine body 1 where the discharge port for the residual material of the IC lead frame is located. Since the upper die 7 can be attached and detached, the attachment and detachment work is also facilitated.

[Brief explanation of drawings]

Fig. 1 is a front view of an automatic press device for cutting IC lead frames in which the present invention can be implemented, Fig. 2 is a plan view of the same, and Fig. 3 is a main part showing the state in which the upper mold mount is assembled to the post. A partially cutaway front view of
Figure 4 is a plan view of the lower die mount with the lower die attached to the above, Figure 5 is a partially cutaway side view of the lifting mechanism that raises and lowers the upper die mount, and Figure 6 is A partially cut-away front view of the upper mold mount and lower mold mount shown above with the upper and lower molds set; FIG.
Figure 8 is a bottom view of the upper mold shown above, Figure 9 is a bottom view of the upper mold mounting base with the upper mold assembled, and Figure 10 is a bottom view of the upper mold mount shown above.
The figure is a plan view of the lower die same as above, Fig. 11 is a plan view of the IC lead frame, Fig. 12 is an explanatory diagram of the IC lead frame showing the cutting process, and Fig. 13 is a plan view of the cut IC. , FIG. 14 is a front view of the IC with the leads further bent and formed. Explanation of drawing symbols, A...Automatic press device, 1...
...Body, 10... Wheels, 11... Support legs, 2... Lower die mount, 3... Upper die mount, 2a, 3a... Fitting groove, 2b, 3b... Stopper, 2c, 3c...
...Insertion port, 2d, 3d...Set hole, 30...Spacer, 31...Tightening screw, 4...Post, 4a
... Locking collar, 40 ... Lifting platform, 41 ... Bearing support member, 41a ... Assembly seat, 41b ... Bearing support part, 42 ... Shaft, 42a ... Crank part,
43...Reciprocating rod, 44...Connection shaft, 45...Conduction pulley, 46...Conduction belt, 47...Buffer spring, 48...Guide tube, 5...Rail, 5a...
...Supply port side, 5b...Discharge port side, 6...IC lead frame, 60...IC, 61...Remaining material, 62
... Range, 63 ... Diver, 64 ... Lead, 7 ... Upper mold, 70, 80 ... Base, 70a,
80a... Fitting portion, 70b... Set hole, 71,
72, 73... Punch, 75, 85... Connection pin, 76, 86... Lock screw, 77... Handle rod, 8... Lower die, 80b... Set hole, 81, 8
2,83...die, M...motor, w...lifting mechanism.

Claims (1)

[Scope of utility model registration request] A supply port for the IC lead frame that is cut by the upper and lower molds that are attached to the lower mold mount that is fixed to the machine body and the upper mold mount that is installed on the machine body to move up and down relative to the lower mold mount. It is mounted on the machine body with the side or the waste material discharge port side facing one side of the machine body, and the upper die mounting base has an insertion port on the bottom side of the machine body, and the insertion port is located in the direction in which the IC lead frame is transferred. A fitting groove that is open to the groove is installed along the transfer direction, and molds such as a punch for cutting resin, a punch for cutting tie bars, a punch for cutting leads, etc. are fitted into the fitting groove so that they can be freely inserted and removed. The upper mold is assembled to the upper mold mount by integrally connecting and assembling it to the base, and the base is fitted into the fitting groove and fixed to the upper mold mount. I C
Mold assembly device for automatic presses for cutting lead frames.