JPH05139410A - Lap joining device for band shaped hoop member made of metal plate - Google Patents

Abstract

PURPOSE:To make it possible to lap-join quickly the starting end of the next band shaped hoop member to the final end of the preceding band shaped hoop member, by spot welding. CONSTITUTION:A supporting member 2, for which a plurality of guide grooves 4a-4d, in which band shaped hoop members are fitted, are provided on the upper surface in such a manner that the guide grooves 4a-4d would extend in parallel, and a guide member 7, on which at least one guide groove 8, in which the band shaped hoop member is fitted, is provided on the upper surface, are arranged to be adjacent to each other. Top and bottom, a pair of electrodes for spot welding 16 are arranged at one end on a supporting member 2 side of the guide member 7, and in the meantime, at least one of the supporting member 2 and guide member 7 is constituted in such a manner that it would give reciprocating motions in the direction perpendicular to the longitudinal direction of respective guide grooves. In addition, at right and left both sides on the upper surface of one end of the guide member 7 on the support member 2 side, tilted surfaces 12 which tilt downward are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strip-shaped hoop member made of a metal plate, such as a long lead frame used for manufacturing electronic parts such as transistors and ICs, at the end of one hoop member. On the other hand, the present invention relates to a device for splicing the starting ends of the other hoop members.

[0002]

2. Description of the Related Art Generally, in order to perform various processes on this type of band-shaped hoop member, one band-shaped hoop member is
Wrap it in a coil on a reel or the like, pull out one end from the reel, and send it to various processing steps for the band-shaped hoop member, and when the processing for this one band-shaped hoop material is completed, for the terminal end, By joining the starting end portions of the next strip-shaped hoop material wound on another reel, the next strip-shaped hoop material is sent to various processing steps.

Therefore, conventionally, as shown in FIGS. 6 and 7, the end portion A ₁ ″ of the preceding strip-shaped hoop material A ₁ is joined to the start end portion A ₂ ′ of the next strip-shaped hoop material A _2. For the matching, as described in, for example, Japanese Patent Application Laid-Open No. 62-38778, the both are superposed on each other, and the superposed portion is sandwiched by a pair of upper and lower electrode portions. The method of spot welding when current is applied is adopted (the spot welded portion is indicated by reference symbol B).

[0004]

However, in the conventional apparatus, when the trailing end portion of the preceding strip-shaped hoop material comes to the spot welding point, the transfer of the preceding strip-shaped hoop material is stopped, while After pulling out the next strip-shaped hoop material from the reel, the starting end portion of the strip-shaped hoop material should be superposed on the end portion of the preceding strip-shaped hoop material, and the superposed portion should be spot-welded. Since the lap joint requires a long waiting time, there is a problem that it is inefficient, and there is also a problem that it is difficult to automate the lap joint.

The present invention has an object of providing a lap joint device which solves these problems.

[0006]

In order to achieve this technical object, the present invention provides a support member provided with a plurality of guide grooves on the upper surface of which a band-shaped hoop member is fitted so as to extend parallel to each other at appropriate intervals. Similarly, at least one guide groove in which the band-shaped hoop member is fitted on the upper surface is provided so as to extend in parallel with each guide groove in the supporting member, and each guide groove in these guide grooves has substantially the same plane shape. And a pair of upper and lower spot welding electrode portions are disposed at one end portion of the guide member on the side of the support member, and at least one of the support member and the guide member is In the guide member, the guide member is reciprocated in a direction perpendicular to the longitudinal direction of the guide groove. And the configuration of providing the inclined surface inclined obliquely downward on the right and left sides of the portion of the guide groove.

[0007]

[Operation] In this structure, the one guide groove in the support member and the strip-shaped hoop material fitted in the guide groove in the guide member are transferred to the support member while the terminal end of the hoop member is moved to the electrode portion. Another strip-shaped hoop member is placed in each of the other guide grooves in a state of being fitted in such a manner that the starting end portion of the strip-shaped hoop member is located at the position of the electrode portion.

Then, when the preceding band-shaped hoop material is transferred so that the terminal end thereof reaches the position of the electrode portion, the transfer is stopped, and then one of the support member and the guide member is guided by both of them. The grooves move to the position where they coincide with each other. Then, at the time of this movement, the starting end portions of the next band-shaped hoop members that fit into the other guide grooves come into contact with the inclined surfaces provided on the left and right sides of the guide member, and are sequentially lifted along the inclined surfaces. , And the starting end portion, when the guide groove in the guide member matches the guide groove in the support member,
Since it fits into the guide groove of the guide member, the starting end portion of the next strip-shaped hoop material can be automatically overlapped with the end portion of the preceding strip-shaped hoop material.

Therefore, by sandwiching the above-mentioned overlapping portion between both electrode portions, the overlapping portion can be integrally connected by spot welding. That is, according to the present invention, while the preceding band-shaped hoop member is being transferred, the next band-shaped hoop member can be set in a state where it can be spliced to the preceding band-shaped hoop member, while After the transfer of the strip-shaped hoop material is completed, the support member or the guide member is moved to superimpose the end portion of the preceding strip-shaped hoop material and the start portion of the next strip-shaped hoop material, and then spot welding can be performed. Of.

[0010]

Therefore, according to the present invention, when the starting end portion of the next strip-shaped hoop material is overlapped with the trailing end portion of the preceding strip-shaped hoop material, the preceding strip-shaped hoop material is transferred as in the conventional case. In such a state, there is no need to wait for the starting end portion of the next strip-shaped hoop material to overlap the end portion of the preceding strip-shaped hoop material, so that the lap joint can be efficiently performed in a short time. In addition, since the superposition can be performed only by moving the support member or the guide member, there is an effect that the lap joint can be easily automated.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. In the figure, reference numeral 1 indicates a machine base, to which a plate-shaped support member 2 is attached in a substantially horizontal state,
On the upper surface of the support member 2, a plurality of (four in this embodiment) guide grooves 4a, 4b, 4c, 4d in which the strip-shaped hoop material A ₁ fed from one first reel 3a is fitted are provided at appropriate intervals. Engraved so as to extend parallel to each other, a magnet 5 is embedded in the bottom surface of each of the guide grooves 4a, 4b, 4c, 4d so that the strip-shaped hoop material A ₁ is attracted to the bottom surface. ..

On the other hand, a reciprocating table 6 is provided on the machine base 1, and the reciprocating table 6 is provided in each of the guide grooves 4a, 4 of the supporting member 2.
It is provided so as to reciprocate in the direction perpendicular to the longitudinal direction of b, 4c, 4d, and this reciprocating table 6 is configured to reciprocate by a motor or a cylinder (not shown). The guide member 7 in which at least one guide groove 8 into which the band-shaped hoop material A ₁ is fitted is engraved, and the guide groove 8 in the guide member 7 corresponds to each of the guide grooves 4a, 4b, 4c, 4d in the support member 2. Install so that they are substantially coplanar and extend in parallel.

The support member 2 in the guide member 7
A notch 9 is provided at one end on the side, while the strip-shaped hoop material A ₁ is provided at the other end of the guide member 7 with an arrow C.
Pair of feed rollers 10, 1 adapted to be transported in the direction of
A transfer means such as 1 is provided. Further, on the upper surface of one end of the guide member 7 on the side of the support member 2, the left and right sides of the guide groove 8 of the guide member 7 are inclined obliquely downward from the upper surface of the guide member 7. An inclined surface 12 is provided.

On the other hand, on the upper surface of the carriage 6, the support 1 is provided at one end of the guide member 7 on the support member 2 side.
3 is erected, and a pair of upper and lower spot welding head bodies 14 and 15 are mounted on the column 13 so as to be movable up and down. The head bodies 14 and 15 are provided with electrode portions 16 and 17, respectively. Together with these head bodies 14 and 15,
By operating in a direction in which they approach each other by the operating mechanism 18 or the like provided in 3, the portion of the strip-shaped hoop material A ₁ in the guide groove 8 of the guide member 7 in the cut portion 9 is moved to both head bodies. Each electrode part 1 in 14 and 15
It is configured to be sandwiched from above and below by 6 and 17.

Further, a column 19 is erected on the carriage 5, and a punch mechanism 21 which moves up and down by an operating mechanism 20 is provided on the column 19, and the guide 22 is guided by a punch 22 in the punch mechanism 21. Guide groove 8 of member 7
A mark hole D is formed in the inner strip-shaped hoop material A ₁ . In this structure, the strip-shaped hoop material A ₁ fed from one first reel 3a passes through one guide groove 4a in the support member 2 and the guide groove 8 in the guide member 7, and then the pair of feed rollers 10,
At 11, it is transferred to various processing steps for the strip-shaped hoop material A ₁ .

On the other hand, while the strip-shaped hoop material A ₁ on the first reel 3a is being transferred to various processing steps as described above, the other guide grooves 4b, 4 on the support member 2 are formed.
The second strip-shaped hoop material A drawn from each of the second reel 3b, the third reel 3c, and the fourth reel 3d in c and 4d.
₂ , third strip hoop material A ₃ and fourth strip hoop material A
_4, starting end A ₂ in the respective strip-like hoop material _{A 2, A 3, A 4} ', A 3', should be set to a state is fitted to A ₄ 'is protruded from the side surface of the support member 2 Of.

When the end portion A ₁ ″ of the first strip-shaped hoop material A ₁ is transferred to the notch 9 in the guide member 7, the transfer is stopped and then the guide member 7 is reciprocated. The guide groove 8 in the guide member 7 is formed by the table 6 so that the strip-shaped hoop members A ₂ , A ₃ , A
Position to match the second band-shaped hoop material A ₂ are fits the guide grooves 4b of ₄ it is to move.

When the guide member 7 is moved to a position corresponding to the guide groove 4b in which the second band-shaped hoop material A ₂ is fitted as described above, the second member fitted in the guide groove 4b is moved.
The starting end portion A ₂ ′ of the strip-shaped hoop material A ₂ is the guide member 7
Abutting the inclined surfaces 12 provided on both left and right sides of the
2 is sequentially lifted as indicated by the chain double-dashed line in FIG. 4, and the guide groove 8 in the guide member 7 has the guide groove 4b in the support member 2 at the starting end portion A ₂ ′.
When the second band-shaped hoop material A ₂ ″ is inserted into the guide groove 8 of the guide member 7, the second band-shaped hoop material A ₂ is inserted into the end part A ₁ ″ of the first band-shaped hoop material A ₁ . The starting ends A ₂ ′ can be automatically superposed.

The guide grooves 4a, 4b, 4c,
The second strip-shaped hoop material A ₂
When the inclined surface 12 of the guide member 7 abuts the starting end portion A ₂ ′ of the guide member 7, only the starting end portion A ₂ ′ is lifted along the inclined surface 12, so that the second strip-shaped hoop material A _{2 ′.} However, the magnet 5 can be reliably prevented from coming off from the guide groove 3b, and a pressing body such as a roller may be used instead of the magnet 5.

Next, both head bodies 1 for spot welding
By moving 4 and 15 toward each other, the first strip-shaped hoop material A ₁
The overlapping portion of the terminal end portion A ₁ ″ of the second strip-shaped hoop material A _{2 and} the starting end portion A ₂ ′ of the second strip-shaped hoop material A ₂ is sandwiched, and the portion is integrally connected by spot welding. Terminal part A ₁ ″ in the first strip-shaped hoop material A ₁
The second strip-shaped hoop material A _{2 that} has been lap-jointed with respect to the same is sequentially transferred to various processing steps in the same manner as the first strip-shaped hoop material A _1, and its end portion reaches the cut portion 9 in the guide member 7. Once transferred, stop the transfer,
The guide member 7, by the carriage 6, and full guide groove 4c is a third band hoop material A ₃ fitting of the guide the guide grooves 8 in members 7 each band hoop A _2, A _3, A ₄ While repeatedly moving to the matching position and repeatedly joining the starting end of the third strip-shaped hoop material A ₃ to the end portion of the second strip-shaped hoop material A ₂ , the guide grooves 4a, Of 4b, 4c, 4d,
After the first band-shaped hoop material A ₁ and the second band-shaped hoop material A ₂ have passed through, the guide grooves 4a and 4b have their starting ends fitted to the band-shaped hoop materials to be spliced next. I'll do it.

When different types of band-shaped hoop members are lap-joined to the preceding band-shaped hoop members, the punch mechanism 2 is provided at a position near the lap-joint.
The mark hole D is formed by 1 and various processing steps for the band-shaped hoop material are performed by automatically reading the mark hole D to automatically determine the type of the band-shaped hoop material.
Various types of processing are performed according to this type.

In the above embodiment, of the support member 2 and the guide member 7, the support member 2 is fixed and the guide member 7
However, the present invention is not limited to this, and the guide member 7 may be fixed and the support member 2 may be configured to reciprocate. Needless to say.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an enlarged plan view of a main part of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is an enlarged sectional view taken along line VV of FIG.

FIG. 6 is a perspective view of a strip-shaped hoop material.

FIG. 7 is a perspective view showing a state in which band-shaped hoop members are spliced together.

[Explanation of symbols]

A ₁ , A ₂ , A ₃ , A ₄ Band-shaped hoop material 1 Machine stand 2 Support members 3a, 3b, 3c, 3d Reels 4a, 4b, 4c, 4d Guide groove 6 Reciprocating table 7 Guide member 8 Guide groove 12 Sloping surface 14 , 15 Spot welding head body 16,17 Electrode part

Claims (1)

[Claims] 1. A support member provided with a plurality of guide grooves on which an upper surface of the belt-shaped hoop member is fitted so as to extend in parallel with each other at appropriate intervals, and at least one guide groove on which the upper surface of the belt-shaped hoop member is fitted. A guide member provided so as to extend parallel to each guide groove in the support member, and the guide members in the guide member are arranged adjacent to each other so that the guide grooves in the guide member have substantially the same plane. A pair of upper and lower spot welding electrode portions are provided at one end portion on the side, and at least one of the support member and the guide member is reciprocated in a direction perpendicular to the longitudinal direction of each guide groove in these. In addition, the upper surface of the one end portion of the guide member on the side of the support member has an inclined surface inclined obliquely downward to the left and right sides of the guide groove of the guide member. Splicing device of metal plate band hoop, characterized in that provided.