KR20120024017A - Joint hole drilling device of electric plug - Google Patents

Abstract

PURPOSE: An apparatus for cutting a contact hole of an electric plug terminal is provided to increase the recycle rate of materials collected after cutting by increasing the depth of a contact hole. CONSTITUTION: An apparatus for cutting a contact hole of an electric plug terminal comprises a rotating table(10), a plurality of terminal jigs(20), an electric plug terminal loading device, terminal clamps(40), first to fifth sensitive drilling machines(50A-50E), a terminal pressing device(60), and a terminal discharge unit. The terminal jigs are installed at regular intervals in the circumferential direction on the rotating table. The electric plug terminal loading device successively loads electric plug terminal to the terminal jigs waiting on the rotating table. The terminal clamps have a gripper for clamping an electric terminal arranged in a terminal jig and a cramp cylinder for moving the gripper up and down. The first to fifth drilling machines process a contact hole in an electric plug terminal by successively increasing the depth of the contact hole. The terminal pressing device presses the rear end of the processed electric plug terminal. The terminal discharge unit discharges the electric plug terminal from the terminal jig.

Description

Joint hole drilling device of electric plug

The present invention relates to a processing apparatus for cutting the connection hole of the electric plug terminal, and in particular, the depth of the cutting process of the connection hole several times deeply step by step, and subsequently the continuous connection hole through the indentation process to complete the productivity The present invention relates to an apparatus for cutting a connection hole of an electric plug terminal which can reduce manufacturing costs by increasing the amount of raw material of the electric plug terminal and recovering the maximum.

The electric plug is provided with a terminal for electrically connecting the outlet. The terminals are made of brass and plated for improved conductivity. The terminal has a certain length and forms a circular cross section, and a connection hole is formed in the terminal to be connected to the wire.

Generally, the connection hole of the electric plug terminal is cut by drilling. At this time, the cutting depth is only about 5mm. Therefore, the processed electric plug terminal is heavy, thereby increasing the manufacturing cost. In addition, since the depth of the connection hole is short, the recovery amount of the cutting chip is also reduced, thereby reducing the recycling rate of the chip.

Therefore, the present invention divides the cutting depth of the connection hole in several steps and can be processed deeply, and it is possible to automate everything from the cutting process to the indentation process and the discharging process to increase productivity, and improve the recycling rate of the material recovered by the deep cutting depth. It is an object of the present invention to provide an apparatus for cutting a connection hole of an electric plug terminal.

According to a suitable embodiment of the present invention,

A circular rotating table that is divided and rotated in the upper center;

A plurality of terminal jigs mounted on the rotating table at regular intervals in a circumferential direction;

An electric plug terminal feeding device which sequentially inputs an electric plug terminal before hole processing to a terminal jig waiting at a set position of the rotating table;

A terminal clamp device installed in the same number as the terminal jig on the rotating table for clamping / unclamping electric plug terminals respectively disposed on the plurality of terminal jigs;

First to fifth drilling machines disposed one-to-one corresponding to the plurality of terminal jigs around the rotating table, and sequentially processing the connection holes of the electric plug terminals when the hole depths are sequentially increased;

A terminal press-fitting device installed next to the fifth drilling machine around the rotating table to press-fit the rear end of the electric plug terminal; And

And a terminal discharge means for discharging the electric plug terminal through the terminal press-fitting device from the terminal jig.

According to another suitable embodiment of the present invention,

By controlling the operation direction of the pneumatic pressure on the plurality of terminal jig side, the corresponding clamp cylinder is clamped from the drilling position and the press-in position, respectively, and the terminal jig is inserted into the rotating table such that the clamp cylinder is unclamped from the discharge position to the closing position. And a roller lever valve is installed in the same number.

According to another suitable embodiment of the present invention,

The electric plug terminal input device,

An electric plug terminal inlet block disposed in front of the inlet of the rotating table;

A terminal guide rail for aligning the electric plug terminals sequentially in the longitudinal direction and guiding them to the terminal insertion block;

An air nozzle installed at the terminal guide rail to move the electric plug terminals to the outlets of the terminal input block individually by air injection force;

A locate cylinder for moving the electric plug terminal forward of the terminal jig at the standby position of the rotating table; And

And a push cylinder which pushes and positions the electric plug terminal moved by the locate cylinder to the corresponding terminal jig.

According to another suitable embodiment of the present invention,

The terminal indentation device,

A press-fit cylinder having a press-fit shaft at the end of the piston rod;

It characterized in that it comprises a pair of indentation finger which has a semi-circular indentation groove in the front end of each of the indentation cylinder and is connected to the pivot shaft and installed to alternately move by the X.

According to another suitable embodiment of the present invention,

A chip discharge pipe communicating with a chip discharge hole for discharging a cutting chip is installed around the rotating table corresponding to a section in which the plurality of drilling machines are arranged.

According to another suitable embodiment of the present invention,

Each of the plurality of drilling machines is characterized in that the transparent cylindrical chip cover is further installed to prevent the chip of the cutting.

According to another suitable embodiment of the present invention,

The terminal clamp device is characterized in that it comprises a gripper having a terminal pressing groove, and a clamp cylinder for operating the gripper up and down.

As described above, according to the connection hole cutting apparatus for an electric plug terminal according to the present invention, the connection hole can be deeply formed by increasing the cutting depth of the connection hole in several steps. As a result, a large amount of cutting can be obtained, thereby increasing the recovery of raw materials, thereby lowering the manufacturing cost. In addition, since the cutting process, the indentation process and the discharge process are all automated, productivity can be increased.

The following drawings, which are attached in the present specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a front view of an apparatus for cutting a connection hole of an electric plug terminal according to the present invention;
2 is a plan view of FIG.
Figure 3a is an enlarged view of the electric plug terminal injection device applied to the present invention.
FIG. 3B is a sectional view seen from line KK in FIG. 3A. FIG.
Figure 4 is a block diagram of a terminal clamp device applied to the present invention, an unclamped state.
5 is a configuration diagram of a terminal clap apparatus applied to the present invention, a clamp state diagram.
Figure 6 is a perspective view of the terminal indentation apparatus applied to the present invention.

In the following the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments presented are exemplary for a clear understanding of the present invention is not limited thereto.

1 is a front view of an apparatus for cutting a connection hole of an electric plug terminal according to the present invention, and FIG. 2 is a plan view of FIG. As shown in FIGS. 1 and 2, the rotating table 10 is provided at the center of the upper surface of the machine body 6. The rotating table 10 has a disc shape and continuously rotates at a predetermined angle every predetermined time in one direction with respect to the central axis X. The rotating table 10 is driven by an unshown submotor disposed on its lower side.

The upper surface of the rotating table 10 is provided with a plurality of terminal jig 20 at regular intervals in the circumferential direction. In the present embodiment, the terminal jig 20 is installed at intervals of 36 degrees in a circumference, and all 10 are installed. As shown in FIG. 4, the terminal jig 20 includes a semicircular terminal receiving groove 21 for fixing the electric plug terminal 200 and a latching jaw 22 for limiting an insertion position of the electric plug terminal 200. .

In FIG. 2 and FIG. 3A, the electric plug terminal feeding device for sequentially feeding the electric plug terminal 200 before the hole processing into the terminal jig 20 in front of the standby position (terminal closing position) of the rotating table 10. 30 is provided. Figure 3a shows an enlarged view of the electric plug terminal injection device applied to the present invention, Figure 3b is a sectional view seen from the line K-K of Figure 3a.

The electric plug terminal inserting device 30, as shown in Figs. 3a and 3b, the electric plug terminal inserting block 32 disposed in front of the standby position of the rotating table 10, and the electric plug flowing out from a known sorter. Terminal guide rails (34) for guiding the terminals sequentially in the longitudinal direction to guide the terminal insertion block (32), and the terminal guide rails (34) are installed in the terminal plug block 32 by the electric plug terminal individually by air injection force Air nozzle (36) for moving to the outlet of the head, locate cylinder (38) for moving the electric plug terminal in front of the terminal jig (20) in the standby position of the rotating table (10), and locate cylinder And a push cylinder 39 for pushing and positioning the electric plug terminal moved by the position 38 into the corresponding terminal jig 20.

At this time, the push cylinder 39 is connected to the push rod 39a having the same cross-sectional size as the diameter of the electric plug terminal at the end of the piston rod, and the electric plug terminal is sequentially selected at the inlet side of the terminal guide rail 34. The sorter 300 for transferring to the terminal guide rail 34 is connected.

Fig. 4 is a schematic diagram of a terminal clap apparatus applied to the present invention and is an unclamped state diagram. 4 and 5, each terminal jig 20 is provided with each terminal clamp device 40 to clamp / unclamp the electric plug terminals supplied one by one. Accordingly, ten terminal clamp devices 40 are installed in the same manner as the number of the terminal jig 20. The terminal clamp device 40 is composed of a gripper 42 having a terminal pressing groove 42a and a clamp cylinder 44 for vertically operating the gripper 42. The gripper 42 is located above the terminal jig 20 and is connected to the operating end of the clamp cylinder 44. At this time, the clamp cylinder 44 is fixed to the ring-shaped support disk 12 fixedly installed above the rotating table 10 with a conventional fastening bolt. The support disc 12 is fixedly installed by a plurality of support bars 14 mounted on the rotating table 10.

The rotating table 10 is provided with roller lever valves 80 provided in the same number as all terminal jigs 20, respectively. Each roller lever valve 80 is installed below the plurality of terminal jig 20. The roller lever valve 80 clamps the corresponding clamp cylinder 44 to the respective drilling position corresponding to the positions ① to ⑤ in Fig. 2 and the press-fitted position of ⑥, and from the discharge position of ⑦ to the standby position of ⑩. The operating direction of the pneumatic pressure is controlled so that the clamp cylinder 44 is unclamped. To this end, below the rotating table 20, the roller lever valve 80 switches the direction of pneumatic pressure from clamping to unclamping in the section from discharge position ⑦ to standby (input) position ⑩ as shown in FIG. A switching guide 86 is provided. The valve switching guide 86 has a structure in which an off groove 86a is formed for a predetermined section in order to give an off signal (unclamp) to the roller lever valve 80.

Around the rotating table 10, as shown in FIG. 2, the 1st-5th drilling machines 50A-50E arrange | positioned correspondingly to the several terminal jig 20 are provided. The first to fifth drilling machines 50A to 50E process the connection hole 201 of the electric plug terminal 200 while chucking the drill tools T having the same diameter and sequentially increasing the hole depth. At this time, the spacing between two adjacent drill axes in the first to fifth drilling machines 50A to 50E is set to 36 degrees, and each includes a drive motor, a spindle, and a chuck.

Preferably, the plurality of drilling machines 50A to 50B may further be provided with transparent cylindrical chip covers 59 for preventing the chipping of the cutting chips. At this time, the cylindrical chip cover 59 is formed with a chip discharging cutout (not shown) cut in the longitudinal direction.

As shown in FIG. 2, a terminal press-fitting device 60 is installed in the ⑥ position around the rotating table 10 to press the rear end of the electric plug terminal as shown in the next turn of the fifth drilling machine 50E.

The terminal press-fit device 60 has a press-fit cylinder 62 having a press-fit shaft 64 at the end of the piston rod, and semi-circular press-fit grooves 66a and 67a at the front end of the press-fit cylinder 62, respectively. It is connected to the pivot shaft 65 of the support block 65 includes a pair of press-fit finger (66, 67) is installed so as to alternately move the X. At this time, the size of the diameter formed by the pressing grooves 66a and 67a is configured to be smaller than the diameter of the rear end of the electric plug terminal.

Terminal discharging means for discharging the electric plug terminal 200 via the terminal press-fitting device 60 from the terminal jig 20 at the discharge position ⑦ is installed at the next position of the press-fitting device 60. In the present embodiment, the terminal discharge means uses an air spray nozzle 70 as shown in FIG. 1, but other means may be provided.

On the other hand, the chip discharge hole (11a) for discharging the cutting chip is formed in the peripheral chip support 7 of the rotating table 10 corresponding to the section where a plurality of drilling machines (50A to 50E) are arranged, the chip The chip discharge pipe 12 is connected to the discharge hole 11a to discharge the cutting chip to the outside of the machine main body 6.

In FIG. 2, reference numeral '15' is a 'chip covering plate' made of a material such as rubber.

The operation of the connection hole cutting machine for the electric plug terminal configured as described above will be described.

First, the rotating table 10 stops for a predetermined time and repeats the isometric rotation movement in one direction continuously. That is, in FIG. 2, the rotating table 10 intermittently rotates clockwise.

At this time, when the rotating table 10 is stopped for a while, the electric plug terminal 200 is supplied at the standby position of # 2, and the electric plug terminal 200 at each drilling cutting position corresponding to the positions ① to ⑤. The cutting process of the connection hole is gradually made deep, the terminal press-in is made by the terminal press-fit device 60 as shown in Fig. 6 in the press-in position of ⑥, the electric plug terminal 200 completed hole cutting at the take-off position of ⑦ The discharge of all takes place at the same time.

In this simultaneous process, one electric plug terminal 200 will be described in detail through which a cutting process and a press-fit of the connection hole are performed.

First, the electric plug terminal 200, which is a workpiece, is supplied from the separator 300 to the terminal guide rail 34 of the electronic plug terminal insertion device 30 of FIG. 3A. At this time, the electric plug terminal 200 is intermittently supplied from the terminal guide rail 34 in the longitudinal direction, and the electric plug terminals 200 are inserted into the battery plug terminal block one by one by the pneumatic injection force injected by the air nozzle 36. It is injected into (32).

The injected electric plug terminal 200 is moved in front of the waiting terminal jig 20 by the forward operation of the rotate cylinder 38, and then the electric plug terminal 200 corresponds to the forward operation of the push cylinder 39. The terminal jig 20 is supplied (loaded). The electric plug terminal 200 located in the terminal jig 20 is fixed by the gripper 42 as shown in FIG. 5 by the lowering operation of the clamp cylinder 44. At this time, the rotating table 10 is made while the rotation is stopped. At this time, the clamping operation of the clamp cylinder 44 is made by supplying pressure oil to the © port by the ON signal operation of the roller lever valve 80.

When the electric plug terminal 200 is supplied to the terminal jig 20, the rotating table 10 is repeatedly rotated 36 degrees clockwise for a predetermined time by an automatic program. Therefore, the electric plug terminal 200 sequentially passes through the fifth machining position of ⑤ starting from the first machining position of position ①.

At this time, the electric plug terminal 200 is, for example, the cutting hole 6mm deep into the first drilling machine (50A) in the primary machining position, the cutting hole 12mm deep into the second drilling machine (50B) in the secondary machining position 18 mm deep with the third drilling machine 50C at the third machining position, 24 mm deep with the fourth drilling machine 50D at the fourth machining position, and finally at the fifth machining position. 5 The cutting machine 50E is cut to a depth of 28 mm (or 29 mm).

As described above, the connection hole 201 of the electric plug terminal 200 according to the present invention is not cut at once but instead is cut deeply through several steps in order of 4 mm in average cutting depth, so that the connection hole 201 has a diameter. It can be processed deeply while its depth is 28 ~ 29mm.

When the processing of the connection hole is completed in this way, the rear end of the electric plug terminal 200 is press-fitted by the terminal press-fit device 60 at the press-fit position of No. 6, which is the next step. In this case, as shown in FIG. 6, the press-fit cylinder 62 moves forward, and the press-fit shaft 64 alternately rotates the pair of press-fit fingers 66 and 67 in an X-shape about the pivot axis 65. Therefore, the rear end portion of the electric plug terminal 200 is press-fitted by the press-fit fingers 66 and 67-side press-fit grooves 66a and 67a to shrink the cross-sectional diameter. Through such a press-fit process, the outer diameter of the rear end of the electric plug terminal 200 may be reduced from 2.5 mm to 2 to 2.1 mm in size. The reason for the press-in process is to match the cross-sectional size between the connection wires and to prevent the eccentric position of the connection holes.

On the other hand, when the press-in process is completed in the next discharge position (unloading) ⑦ in the off direction switching operation of the roller lever valve 80 as shown in FIG. The electric plug terminal 200 located in the terminal jig 20 is in an unclamped state, and then the electric plug terminal 200 is connected to the terminal jig 20 by pneumatic pressure injected by the air nozzle 70 as a discharge means. Departed from is discharged to the workpiece discharge container (98).

Next, the terminal jig 20 from which the electric plug terminal 200 has been detached is placed in the standby position (loading position) of # 1 through three divided rotations. At this time, the clamp cylinder 44 located in the corresponding terminal jig 20 is in the off position of the roller lever valve 80 to be kept in an unclamped state, and is in a standby position. Ready to receive

As described above, according to the present invention, the electric plug terminal 200 is supplied to the terminal jig 20 of the rotating table 10 every time the divided rotation is periodically performed, and the connecting holes are sequentially processed at other cutting positions, thereby continuously processing the workpiece. Can be cut and mass production is possible.

In addition, the connection hole is deeply cut into the electric plug terminal 200 step by step, and many cutting chips are collected and recycled, thereby reducing manufacturing costs.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is only limited by the scope of the appended claims.

10: rotating table
11a: chip outlet
20: terminal jig
30: electric plug terminal input device
32: Electric plug terminal insertion block
34: Terminal guide rail
36: air nozzle
38: locate cylinder
39: push cylinder
40: terminal clamp cylinder
50A ~ 50E: Drilling Machine
59: cylindrical chip cover
60: terminal indentation device
62: press-in cylinder
64: press-fit shaft
66,67: Indentation Finger
66a, 67a: Press-In Groove
70: terminal discharge nozzle
80: roller lever valve
86: valve switching guide

Claims (7)

A circular rotating table 10 which is divided and rotated in the upper center;
A plurality of terminal jigs 20 installed at the rotating table 10 at regular intervals in the circumferential direction;
An electric plug terminal inserting device (30) which sequentially inputs an electric plug terminal before hole processing to a terminal jig (20) waiting at a set position of the rotating table (10);
A terminal clamp device (40) installed in the same number as the terminal jig (20) on the rotating table (10) for clamping / unclamping electric plug terminals respectively disposed on the plurality of terminal jigs (20);
First to fifth drilling machines disposed one-to-one correspond to the plurality of terminal jigs 20 around the rotating table 10 and sequentially increasing the hole depths to process the connection holes of the electric plug terminals ( 50A-50E);
A terminal press-fitting device (60) installed next to the fifth drilling machine (50E) around the rotating table (10) to press-fit the rear end of the electric plug terminal; And
And a terminal discharge means for discharging the electric plug terminal from the terminal jig via the terminal press-fit device (60). The method of claim 1,
By controlling the operation direction of the pneumatic pressure on the plurality of terminal jig 20 side, the corresponding clamp cylinder 44 is clamped to the drilling position and the press-in position, respectively, and the clamp cylinder 44 is unclamped from the discharge position to the insertion position. The cutting device for connecting holes of the electric plug terminal, characterized in that the roller lever valve (80) is provided in the same number as the terminal jig (20) on the rotating table (10). The method of claim 1,
The electric plug terminal injection device 30,
An electric plug terminal inlet block 32 disposed in front of the inlet of the rotating table 10;
A terminal guide rail 34 for aligning the electric plug terminals sequentially in the longitudinal direction and guiding them to the terminal insertion block;
An air nozzle (36) installed on the terminal guide rail (34) to move the electric plug terminals to the outlets of the terminal input block (32) by air spraying force;
A locating cylinder 38 for moving the electric plug terminal forward of the terminal jig 20 at the standby position of the rotating table 10; And
And a push cylinder (39) for pushing and positioning the electric plug terminal moved by the locate cylinder (38) into the corresponding terminal jig (20). The method of claim 1,
The terminal indentation device 60,
A press-fit cylinder 62 provided with a press-fit shaft 64 at the end of the piston rod;
A pair of press-fit fingers 66,67 having semi-circular press-fit grooves 66a and 67a at the front end of the press-fit cylinder 62 and connected to the pivot shaft 65 so as to be alternately moveable with an X-shape. Connection hole cutting processing apparatus for an electric plug terminal, characterized in that it comprises a. The method of claim 1,
The chip discharge pipe 12 communicating with the chip discharge hole 11a for discharging the cutting chip is installed around the rotating table 10 corresponding to the section in which the plurality of drilling machines 50A to 50E are disposed. Connection hole cutting device for an electric plug terminal, characterized in that. The method of claim 1,
The plurality of drilling machines (50A to 50B) is a cutting device for connecting holes of the electric plug terminal, characterized in that the transparent cylindrical chip cover 59 is further installed to prevent the cutting of each cutting chip. The method of claim 1,
The terminal clamp device 40 includes a gripper 42 having a terminal pressing groove 42a and a clamp cylinder 44 for operating the gripper 42 up and down. Device.

Images