JPH0124935Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an improvement in the vertical drive device of the upper die mounting base of an automatic press machine for cutting and forming IC lead frames. .

Previously, the vertical drive device for the upper mold mount of the automatic press machine described above had a plurality of posts supporting the upper mold mount mounted on the machine frame body, and the peripheral edge of the upper mold mount was attached to the posts. By fitting the parts so that they can slide freely, the upper mold mount is supported on these posts so that it can be raised and lowered, and the rod for moving in and out of the hydraulic cylinder device assembled on the machine frame body is attached to this upper mold mount. The upper die mount is moved up and down by connecting the two and operating this hydraulic cylinder device.

The means for moving the upper die mounting base up and down with this hydraulic cylinder device requires a stopper to regulate the stroke of the rod that moves in and out of the hydraulic cylinder device in order to achieve accuracy, so there is a strong collision noise with the stopper during operation. There is a problem that it is noisy. This problem can be solved by driving the upper mold mount with a lifting mechanism such as a crank mechanism or cam mechanism that converts rotational motion into up and down reciprocating motion, so that the raised and lowered positions can be regulated without a stopper. Once you get the hang of it, you can effectively eliminate it, but
Since the vertical movement of the upper mold mount is limited to the range of the vertical and reciprocating stroke of the lifting mechanism, the upper mold mount must be pulled up for maintenance and the distance between it and the lower mold mount must be removed. Another problem arises when trying to widen the opening, which is not possible.

The present invention was devised to solve this problem, and the upper mold mount is driven by an elevating mechanism that converts rotational motion into up and down reciprocating motion. The purpose is to be able to pull it upwards.

In order to achieve this purpose, in the present invention, a plurality of posts installed on the machine frame body to support the upper die mounting base are supported on the machine frame body so as to be able to rise and fall freely, and the posts are attached to the machine frame body. In an automatic press machine, which is connected to an elevating mechanism that converts the rotational motion of the mounting into vertical reciprocating motion, and which has an upper mold mount attached to the upper end of the post, the upper mold mount is attached to the upper end of the posts. The guide shaft part that slides the mounting base above the assembly position is extended upward and installed, and the upper mold mounting base is moved to the assembly position by a spacer that is removably fitted to the guide shaft part. The present invention proposes a means for configuring a vertical drive device for an upper mold mount in an automatic press machine, in which a lifting mechanism for raising and lowering the upper mold mount with respect to the posts is mounted on a connecting plate that is fixed and spans the tops of the posts. It is something to do.

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

In Fig. 1, 1 is the machine frame body of automatic press device A, 2 is the lower mold mounting base mounted on the machine frame body 1, and 3
is an upper mold mount mounted on the machine frame body 1 and arranged above the lower mold mount 2 so as to vertically face the lower mold mount 2; 4... supports the upper mold mount 3; At least a plurality of posts installed in the machine frame body 1 are shown.

The machine frame main body 1 has a frame structure in the shape of a square machine case, 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.

The lower die mounting base 2 is arranged and fixed to a part of the upper surface of the machine frame body 1 near one side (FIG. 2). The above-mentioned posts 4 are fitted into the lower mold mounting base 2 at three locations, in plan view, at both front and rear ends on one side (the left side in Fig. 2) and at the front and rear intermediate portion on the other side. A cylindrical metal 20 is provided with a through hole and is fitted into the through hole.
By fitting the posts 4 in a vertically slidable manner (FIG. 3), the posts 4 are mounted on the machine frame body 1 so as to be movable up and down.

The lower ends of the posts 4 are connected and supported by a support plate 5 formed in a substantially triangular shape and disposed in the inner cavity of the machine frame body 1 (fourth
(Fig.), the support plate 5 is connected to an elevating mechanism 6 installed in the inner cavity of the machine frame body 1 and configured to convert rotational motion into up and down reciprocating motion, and the operation of the elevating mechanism 6 , each post 4... are arranged to move up and down in synchronization.

As shown in FIG. 5, the lifting mechanism 6 has bearing support members 60, 60 which are assembled and supported on the machine frame body 1 by means of assembly seats 60a, 60a, as shown in FIG. The bearing support parts 60b, 60b of the bearing support members 60,60 are installed in two rows in parallel with the axis lines of the bearing support parts 60b aligned.
0b, a shaft 61 is supported across the rack via bearings 62, 62, a crank portion 61a is formed at the intermediate portion of the shaft 61, and a reciprocating rod 63 is fitted at its base end into the crank portion 61a. The upper end of the shaft 61 is connected to the support plate 5 through a connecting shaft 64, and one end of the shaft 61 is connected to the output shaft 6 of the motor M through conduction pulleys 65 and 66 and a conduction belt 67.
8 and conduction. When the shaft 61 is rotated by the operation of the motor M, the reciprocating rod 63 reciprocates up and down, thereby moving the support plate 5 up and down, and raising and lowering the three posts 4. It acts on This lifting mechanism 6 is connected to the crank portion 6 of the shaft 61 described above.
1a and the reciprocating rod 63 connected thereto are changed to cam foils, and the support plate 5 is moved up and down by the rotation of the cam foils, etc.
It may be designed as appropriate to convert the rotational movement of the shaft 61 into vertical reciprocating movement. Note that 69 is a buffer spring provided between the aforementioned bearing support member 60 and support plate 5, and 13...
is a guide tube for the posts 4 fixedly provided on the machine frame body 1.

As shown in Fig. 7, the upper mold mounting base 3 has three through holes into which the posts 4 described above are inserted, at both ends of the front and back on one side and at the middle part between the front and rear of the other side. Then, the through holes are inserted into the posts 4 through the cylindrical metal 30, and supported by the locking flange 40 provided at the upper end of each post 4, as shown in FIG. The position supported by this locking flange 40 is set as the assembly position w, and is assembled and fixed there. At this time, each post 4 is provided with a
Guide shaft portions 4a extending longer upward than the assembly position w are installed respectively, and the metal 30 provided in the through hole of the upper die mounting base 3 is slid vertically onto the guide shaft portions 4a. The upper mold mount 3 is moved into the above-mentioned assembly position w located at the lower end of the guide shaft portion 4a, and the upper mold mount 3 is inserted so that it protrudes from the upper surface of the upper mold mount 3. As shown in FIG. 9, the guide shaft portion 4a has a cleavage portion 80a that opens in the peripheral wall and is slightly wider than the diameter R of the guide shaft portion 4a. A cylindrical spacer 80 that is somewhat longer than the guide shaft 4a is fitted and inserted as shown in FIG. Tighten the nut 42 with
By pushing the upper die mounting base 3 downward through the spacer 80,
It should be fixed and assembled.

A connecting board 43 is attached to the upper end of each post 4 so as to connect the upper end of each post 4.
is assembled by fitting a through hole provided in its peripheral edge into the upper end of the threaded part 41 that protrudes upward from the upper end of the guide shaft part 4a and fixing it with a set screw 44. The board 43 is equipped with a lifting mechanism 9 in which the other end of a chain 92 whose one end is connected to the wheel 91 moves up and down by reciprocating a wheel 91 by driving a rotating shaft 90. Window hole 43a provided in the connecting board 43 on the other end side
It hangs down toward the upper surface of the upper mold mount 3 and is connected to the connecting tool 31 provided on the upper surface side of the upper mold mount 3, and the elevating mechanism 9 is operated with the spacer 80 described above removed. As a result, the upper mold mount 3 is slidably moved up and down with respect to the guide shaft portion 4a.

In the illustrated example, the elevating mechanism 9 is in the form of a hoist in which the rotary shaft 90 is decelerated and rotated by driving the input shaft 93 manually or by a motor, hydraulic motor, etc.; It may be configured using an appropriate mechanism such as a cam mechanism.

In addition, 2a is the lower mold assembled to the lower mold mounting base 2, 3
A is a cartridge-shaped upper mold assembled to the lower surface of the upper mold mount 3.

The vertical drive device for the upper mold mount in the automatic press machine for cutting IC lead frames according to the present invention, which is configured as described above, is configured such that the upper mold mount 3 is driven vertically when the upper mold mount 3 is assembled. A lifting mechanism 6 that converts the rotational motion of a crank or cam into vertical reciprocating motion for the post 4 that supports itself.
Since the work is carried out by lifting and lowering using a hydraulic cylinder, the work can be carried out quietly without generating strong impact noise unlike the conventional means of lifting and lowering using a hydraulic cylinder. When you want to increase the
A spacer 80 fitted to the guide shaft portion 4a formed at the upper end of each post 4... is inserted into the nut 4.
When removed by loosening the tightening of 2, the upper die mount 3 will be in a state where it can freely slide up and down with respect to the guide shaft 4a, as shown in FIG. 10, and the elevating mechanism 9 will be activated. As a result, the guide shaft portion 4a is pulled up by the stroke S determined by the vertical length thereof, as shown by the chain line in FIG. 10.

Therefore, the vertical movement stroke of the lifting mechanism 6 for raising and lowering the upper mold mount 3 is such that the upper mold 3a attached to the upper mold mount 3 is predetermined with respect to the lower mold 2a attached to the lower mold mount 2. The upper mold mount 3 is set to a small stroke required to perform the press operation, and during maintenance, the upper mold mount 3 is moved far beyond the stroke set in the lifting operation mechanism 6 to the lower mold mount 2. It will now be possible to pull it up to the raised position.

[Brief explanation of the drawing]

Fig. 1 is a front view of an automatic press machine capable of carrying out the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a longitudinal sectional front view of the mold section of the above, and Fig. 4 is a vertical view of the lifting mechanism section of the same. FIG. 5 is a side view of the lifting mechanism shown above, FIG. 6 is a partially broken front view of the lifting mechanism shown above, and FIG. 7 is a partially cut away front view of the lifting mechanism shown above. A bottom view, and FIG. 8 is a partially cutaway side view showing how the upper mold mount is assembled to the post.
FIG. 9 is a partially cutaway plan view showing the state in which the upper mold mount is assembled to the post, and FIG. 10 is an explanatory view of the operation of the device of the present invention. Explanation of drawing symbols, A...Automatic press device, 1...
... Machine frame body, 10 ... Wheels, 11 ... Support legs, 13
...Guide tube, 2...Lower die mounting base, 20...Metal, 3...Upper die mounting base, 30...Metal, 4...
Guide shaft portion, 4a... Guide shaft portion, 40... Locking collar portion, 41... Threaded portion, 42... Nut, 43...
...Connection board, 43a...Window hole, 44...Fixing screw,
6... Lifting operation mechanism, 60... Bearing support member, 6
0a...assembly seat, 60b...bearing support part, 61...
... Shaft, 61a ... Crank part, 62 ... Bearing, 63 ... Reciprocating rod, 64 ... Connection shaft, 65,
66...Conduction pulley, 67...Conduction belt, 6
8... Output shaft, 69... Buffer spring, 80... Spacer, 80a... Cleavage part, 9... Lifting mechanism, 90
...Rotating shaft, 91...Foil, 92...Chain.

Claims (1)

[Scope of utility model registration request] The multiple posts installed on the machine frame body to support the upper mold mount are supported on the machine frame body so as to be able to rise and fall freely, and the lifting and lowering mechanism converts the rotational motion of the mounting on the machine frame body into up and down reciprocating motion. In an automatic press device that is connected to an operating mechanism and has an upper mold mount attached to the upper end of the post, there is a guide shaft at the upper end of the posts that slides the upper mold mount upward from the assembly position. At the same time, the upper mold mounting base is fixed in the assembly position by a spacer that is removably fitted to the guide shaft part, and a connecting plate that spans the top of these posts is installed. , a vertical drive device for an upper mold mount in an automatic press machine for cutting IC lead frames, characterized in that the upper mold mount is equipped with a lifting mechanism for raising and lowering the upper mold mount relative to a post.