JPS6160525B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a terminal cutting device used in manufacturing slide switches and the like.

(Prior Art) Recently, when a plurality of terminals are implanted in a row on an insulating substrate in the manufacturing process of a slide switch, for example, as shown in FIGS. 1 to 3,
A plurality of terminals a, whose ends are integrally connected, are inserted into an insulating substrate b and caulked (hereinafter, the object in this state is referred to as a "work"), and then the terminals of this work W are connected. The plate portion C is separated from the line 1 by a terminal cutting device to make each terminal a independent.

By the way, conventional terminal cutting devices, for example, have a through hole for inserting a workpiece that passes through the lower mold back and forth, and also have a cutting blade called a side cut punch slidably arranged on the side surface of the lower mold. The cutting blade is driven in the horizontal direction by the upper die of the press machine, and the terminal a of the workpiece W...
By inserting and fixing the connecting plate part C into the through hole of the lower die from the front and operating the press device, the terminal passing end of the workpiece W, that is, the terminal connecting plate part C is cut by the cutting blade. They are becoming separated all at once.

(Problem to be Solved by the Invention) However, in such a device, the processed workpiece is removed from the lower die after each cutting operation, and the unprocessed workpiece W is attached to the lower die. In addition to low processing efficiency, there are problems in that the lower die must be replaced for different types of workpieces with different numbers of terminals, and there is also the problem that automation is extremely difficult with this method. Ta.

SUMMARY OF THE INVENTION An object of the present invention is to provide a terminal cutting device which has a simple structure and can eliminate the above-mentioned drawbacks.

(Means for Solving the Problems) In order to solve the above problems, the terminal cutting device of the present invention has an upper surface on which the substrate of the work is moved, and a terminal connecting plate portion of the work is inserted from one end. an upper mold having an upwardly opening linear guide groove with at least the intermediate part opening downward, the upper mold projecting downward at the intermediate part and retracting from the other end; and a lower die that is capable of reciprocating in a direction perpendicular to the guide groove and has a blade that cuts the terminal connection plate portion diagonally across the terminal connection plate portion protruding downward from the guide groove in the intermediate portion; , a workpiece conveyance mechanism having a feed roller that presses the substrate of the workpiece on the upper surface of the intermediate portion of the upper mold against the upper mold and moves it toward the other end of the upper mold; and a workpiece transport mechanism that moves the lower mold in a direction perpendicular to the guide groove. It is equipped with a lower mold drive mechanism that moves the mold back and forth.

(Operations and Effects) Since the present invention is configured as described above, the terminal connecting plate portions of the workpiece fed from one end of the guide groove of the upper mold are sequentially fed to the other end of the upper mold, and the blades of the lower mold are used to Since the terminal connecting plate part of the workpiece can be cut immediately, it is easy to automate the cutting work and dramatically improve processing efficiency. It is very economical because there is no need to replace type 3.

(Example) An example of the present invention will be described below with reference to FIGS. 4 to 13.

A box-shaped support 2 is fixed on a base 1, and an upper mold 3 is horizontally mounted on this support 2. The upper mold 3 has a plate-like shape having a concave portion 3a extending from one end to the other end on the upper surface and protrusions 3b and 3c on both ends of the lower surface. two straight guide grooves 3d with an upward opening extending to the other end;
3d are provided in parallel. These guide grooves 3d, 3d
The guide grooves 3d and 3d are deep enough to reach the projections 3b and 3c, and therefore, the guide grooves 3d and 3d open toward the lower surface of the upper mold 3 in the intermediate portion where the projections 3b and 3c are not present. Further, on the lower surface of the middle part of the upper mold 3, the lower mold 4 is held in close contact with the guide groove 3.
It is arranged so as to be slidable in a direction perpendicular to d and 3d. The lower mold 4 has a prismatic shape elongated in the sliding direction, and has sliding surfaces 4a, 4a, 4b that come into close contact with the upper mold 3 at both ends and the center of its upper surface. The central sliding surface 4b is formed into an isosceles triangle that points toward one end of the upper die 3, and blades 4c, 4c are formed on both hypotenuses thereof, diagonally intersecting with the guide grooves 3d, 3d, respectively. ing. Reference numeral 5 denotes an Ω-shaped bracket that slidably holds both ends of the lower mold 4, and is fixed to the lower surface of the upper mold 3 with bolts or the like. A work conveyance mechanism 6 is provided above the upper die 3, and a lower die drive mechanism 7 is provided below the lower die 4. The workpiece transfer mechanism 6 has a rotating arm 6a disposed on the base 1 so as to be rotatable upward and downward, and a drive unit 6b consisting of a motor and a speed reducer is attached to the rotating end of the rotating arm 6a. A feed roller 6c mounted on the output shaft of the machine 6b is positioned and fixed on the middle part of the upper mold 3, and the rotating arm 6a is biased downward by a spring 6d to move the feed roller 6c onto the upper mold 3. It is meant to be pressed upward. The lower mold drive mechanism 7 has a first
As schematically shown in FIG.
A pin 7b protruding from one rotating end of a is loosely fitted into a hole 4d drilled on the lower surface of the lower die 4,
The other rotating end of the rotating lever 7a extends outside the support base 2, and a connecting rod 7d pivotally connected to the eccentric shaft 7c is rotatably connected to this extending end. By rotationally driving the motor 7e, the connecting rod 7d reciprocates, the rotary lever 7a reciprocates, and the lower mold 4 moves into the guide groove 3d,
It is designed to move (vibrate in this embodiment) in a direction perpendicular to 3d. Note that 8 is a rail member connected to both ends of the upper mold 3, and these rail members 8, 8 have guide grooves 3d, 3 of the upper mold 3.
A guide groove 8a corresponding to d is bored. Reference numeral 9 denotes a workpiece removal stopper provided on both edges of the concave portion 3a of the upper mold 3; 10 is a workpiece removal stopper placed between the guide grooves 3d and 3d of the rail member 8 from above; The stopper 10 has a U-shaped cross section and is fixed to the side surface of the rail member 8.

Here, the operation of the above-mentioned cutting device will be explained. First, a workpiece W fed from a parts feeder (not shown) or the like is fed into the upper die 3 through the rail member 8 on the introduction side (right side in FIG. 5).
In this case, the terminal connecting plate portions C, C of the workpiece W are fitted into the guide grooves 8a, 8a to 3d, 3d, and the board b moves from the rail member 8 to the upper surface of the upper die 3. In this state, the workpiece conveyance mechanism 6 is operated to rotate the feed roller 6c in the direction of arrow X, and
The lower mold drive mechanism 7 is operated to move the lower mold 4 into the guide groove 3d,
When vibrating in a direction perpendicular to 3d, the workpiece W fed onto the upper die 3 is forced against the upper surface of the upper die 3 by the feed roller 6c and forcibly moves the middle part of the upper die 3. The terminal connecting plate portions C, C of the workpiece W are cut by the blades 4c, 4c of the lower mold 4 disposed on the lower surface side of the intermediate portion when passing through the intermediate portion. . That is, the guide grooves 3d, 3d for guiding the terminal connecting plate parts C, C of the workpiece W are open to the lower surface side in the middle part of the upper mold 3, and the terminal connecting plate parts C, C of the workpiece W are guided to the guide grooves 3d, 3d. 3d, 3d, and the terminal connecting plate portions C, C obliquely intersect with the guide grooves 3d, 3d and slide in a direction orthogonal to the guide grooves 3d, 3d. It is separated by the shearing action of the blades 4c, 4c. Note that since the lower die 4 is vibrated with a relatively small amplitude, the above-mentioned cutting is not done all at once, but in the first cut.
As shown in Figure 3, this is performed intermittently multiple times for each workpiece. The finished workpiece W that has been cut and passed through the intermediate portion of the upper mold 3 is sent out to the next process, for example, a deburring process, through the rail member 8 on the delivery side.

However, with such a terminal cutting device, the terminal connecting plate portions C, C of the workpiece W fed from one end side of the upper mold 3 can be sequentially fed to the other end side along the guide grooves 3d, 3d. Since it is possible to cut into pieces, it is easy to automate the cutting work and dramatically improve processing efficiency.In addition, it is not necessary to replace the upper mold 3 even when cutting a different type of workpiece with a different number of terminals. It is economical because there is no In addition, since the terminal connecting plate parts C and C of each workpiece W are cut multiple times, the power required to drive the lower mold 4 is extremely small, and at the same time, the noise during processing is low. The force acting on the mold 3, the lower mold 4, etc. is reduced, making it possible to downsize the device and reduce equipment costs. Furthermore, since the blade portion is small, it is possible to use a relatively expensive carbide material, and the durability can be greatly improved. Furthermore, unless the workpiece W is cut, the blade 4
c and 4c and cannot pass through the upper mold 3, so that the inconvenience caused when uncut defective products are mixed into already processed products can be completely eliminated.

It should be noted that the number of guide grooves in the upper mold is not limited to two, but it goes without saying that one or three or more guide grooves may be provided.
In either case, the number of blades corresponding to the guide grooves may be formed on the lower mold.

Further, the configurations of the workpiece conveyance mechanism and the lower mold drive mechanism are not limited to those described above, and of course, other configurations may be used.

[Brief explanation of the drawing]

Figures 1 to 3 show general examples of workpieces.
The figure is a front sectional view, FIG. 2 is a side view, and FIG. 3 is a bottom view. FIGS. 4 to 13 show an embodiment of the present invention, FIG. 4 is a plan view, and FIG. 6 is a plan view showing the main parts, FIG. 7 is a front view of the same, FIG. 8 is a sectional view taken along the - line in FIG.
10 is a sectional view taken along the line - in FIG. 7, FIG. 11 is an exploded perspective view showing the same part, FIG. 12 is a schematic explanatory view showing the lower mold drive mechanism, and FIG. is an action explanatory diagram. 3... Upper mold, 3d... Guide groove, 4... Lower mold, 4
c...Blade, 6...Work transport mechanism, 6c...Feed roller, 7...Lower die drive mechanism, W...Work, b
... Board, C... Terminal connection plate part.

Claims (1)

[Claims] 1. A straight line with an upper opening that has an upper surface on which the board of the workpiece is moved, and in which the terminal connecting plate part of the workpiece is inserted from one end, protrudes downward at the middle part, and exits from the other end, with at least the middle part opening downward. A terminal connecting plate is formed by diagonally intersecting an upper mold provided with a guide groove and a terminal connecting plate portion disposed in close contact with the lower surface of the intermediate portion of the upper mold and protruding downward from the guide groove in the intermediate portion. A lower die having a blade for cutting the part and capable of reciprocating in a direction perpendicular to the guide groove, and pressing the substrate of the workpiece on the upper surface of the intermediate part of the upper die against the upper die, and moving the substrate toward the other end of the upper die. 1. A terminal cutting device comprising: a workpiece conveyance mechanism having a feed roller that moves the lower die; and a lower die drive mechanism that reciprocates the lower die in a direction orthogonal to the guide groove.