JP3639926B2 - Wire rod end forming device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wire terminal molding equipment to facilitate wire-passing work to the die slimming wire diameter of the wire.
[0002]
[Prior art]
A wire drawing machine that reduces the wire diameter of copper wire, etc., uses a plurality of dies whose hole diameters are made smaller in stages, and by sequentially passing the raw wire to these dies, the required diameter is obtained. A wire rod having the following can be obtained. When passing the tip of the wire rod through the die, the diameter of the hole of the die is smaller than the diameter of the wire rod. Therefore, the wire rod end treatment is necessary so that the tip of the wire rod can be easily passed through the hole of the die. Conventionally, this processing has been performed manually such as crushing the tip with pliers or shaving the tip with a file.
[0003]
[Problems to be solved by the invention]
The processing of the conventional wire terminal, the operator's skill, there are variations in the finished state of the tip portion, also, when passing line to the die, the wire there is a problem such that it is difficult through a die hole It was. In addition, the tip of the wire is pulled while being heated by a lighter fire, and there is a difference due to different processing methods depending on the operator, resulting in a time difference required for the die wiring work, and the entire wire drawing work. There was also a problem of having an adverse effect.
[0004]
The purpose of this invention, in view of the above circumstances, there is no variation due to operator, it is to provide a wire end molding equipment to reliably allow passing the wire to the die hole.
[0005]
[Means for Solving the Problems]
The wire terminal forming apparatus according to the present invention is a heater (11) having a hot air blowing portion (11a) that is long in the front-rear direction, and a wire rod placement device provided behind the hot air blowing portion (11a) of the heater (11). the fixing stand (13), heater (11) of the hot-air blowing unit and the movable base of the wire placement provided in front of (11a) (14), the clamp before provided in the fixed base (13) (15 ), a clamp (16) after being provided on the movable base (14), and a feed screw device for moving the movable base (14) to the front (17), the front end of the fixing stand (13) and Steps (13a) and (14a) that are higher than the other portions are provided at the rear end of the movable base (14) , respectively, and the steps (13a) and (14a) have an arcuate cross section. The wire guide grooves (21) and (22) extending in the front-rear direction are provided, and the front and rear clamps (15) and (16) are respectively fixed portions (23) fixed to the bases (13) and (14) , and the wire ( Yes rubber pressing portion for pressing the 1) to a table top (25) That the movable part (24), in which has a handle portion for moving the movable part (24) in the clamping direction or an unclamping direction and (26).
[0006]
Although the length of the to-be-heated part heated with a heater (11) is suitably changed with the diameter of a wire, 20-70 mm is preferable and 30-50 mm is more preferable. Heater (11), 300 ° C. or higher, preferably, is preferably heatable to 400 to 700 ° C..
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In this specification, “front” means the right in FIG. 3, “rear” means the left in the same figure, and “left and right” mean the rearward direction, that is, the lower side in FIG. To do.
[0008]
1, wire terminals molding equipment in the treated wire indicates a part of the wire drawing machine which is an example to be used according to the present invention. In the figure, a wire having a predetermined diameter (1), after the tip (1a) is processed in a tapered shape, is passed through a die roll (2). The hole (3) provided in the die (2) has an axial center portion (3a) with a hole diameter smaller than the diameter of the wire rod (1) , and from the center portion (3a) toward the insertion side and in the center Both are formed so that the diameter increases from the part (3a) toward the extraction side. In the wire rod (1) having a diameter larger than that of the central portion (3a), the tip portion (1a) passes through the central portion (3a), and a very small portion of the tip portion is passed through the drawing side. Worker, pulled by grasping a small portion of the tip pliers (4) or the like, attached wire (1) to the tensioning device (not shown). As a result, the wire rod (1) is forced to pass through the die (2) under a predetermined tension, and is thinned to a diameter corresponding to the die (2). This operation is performed until the wire diameter of the wire rod (1) is reduced to a predetermined wire diameter. For example, when the wire rod (1) is a copper wire by a nine-stage die passage, the wire diameter is from 1 mm to 0.314 mm. Until it is thinned.
[0009]
As can be seen from Figure 1, the length L of the tip of the wire (1) (1a), to facilitate out pulling in pliers (4) or the like, is required to be a certain degree of magnitude or more. The wire connection work to the die (2) becomes more difficult as the diameter of the wire rod (1) becomes thinner, especially for the wire rod (1) with a thin wire diameter, the length of the tip (1a) It is important to lengthen L.
[0010]
FIG. 2 shows a wire terminal molding process by the wire terminal molding apparatus of the present invention. First, near the tip portion of the wire (1) (heated portion (1b)) is heated by the heater (5) with a certain length range (see FIG. 2 (a)). Then, the tension of the axially outward is applied to the heated portion (1b) of the heating during or after heating immediately wire (1) (see Figure 2 (b)). The tensioning is wire (1) is divided line up to the cut (see FIG. 2 (c)).
[0011]
Since the heated portion (1b) of the wire (1) is softened and easily stretched and is difficult to cut, as shown in FIG. 2 (b), the amount of elongation until cutting is large, and the tip after cutting is large. The length L of the portion (the portion where the wire diameter is reduced) (1a) is increased. Moreover, as the wire rod (1) is gradually stretched, the shape of the tip end portion (1a) becomes conical (circular in cross section everywhere). Accordingly, it is possible to very easily carry out the operation of passing the wire (1) to the die (2) shown in FIG.
[0012]
3 to 5 show an embodiment of a wire terminal forming apparatus (10) according to the present invention.
[0013]
A wire terminal forming apparatus (10) according to the present invention is an apparatus for facilitating a wire connecting work to a die for reducing the wire diameter of a wire (copper wire), and is provided in a heater case (12). A hot air blowing heater (11), a wire base mounting base (13) provided behind the hot air blowing portion (11a) of the heater (11), and a front of the hot air blowing portion (11a) of the heater (11) The movable base (14) for mounting the wire rod provided on the front, the front clamp (15) provided on the fixed base (13) , the rear clamp (16) provided on the movable base (14) , and the movable base (14) a feed that is moved forward Rineji unit (17), the control unit, and a control box (18) which dedicated switch or the like, lead clippings put put such cutting chips and (19).
[0014]
The heater (11) blows out heated air, and the hot air blowing portion (11a) has a shape that is long in the front-rear direction (for example, the front-rear width is about 45 mm with respect to the left-right width of 4 mm). The heating temperature by the heater (11) is variable and can be heated up to about 650 ° C.
[0015]
The heater case (12) has a rectangular parallelepiped shape and has a cover (20) with a handle that can be opened and closed at the tip thereof. The cover (20) is composed of a square left wall, a rectangular upper wall, and right and left triangular front and rear walls, and a lower surface of the front and rear walls is provided with a notch (20a) for passing the wire (1). . As shown in FIG. 5, the notch (20a) has an arc shape centered on the right end of the upper wall, and its tip is semicircular.
[0016]
The front end of the fixed base (13) is provided with a step (13a) that is higher than the other portions. The step (13a) has a circular arc cross section as shown in FIG. A wire guide groove (21) extending in the direction is provided. Similarly, a stepped portion (14a) that is higher than the other portions is provided at the rear end of the movable base (14), and the stepped portion (14a) has a cross section as shown in FIG. A wire guide groove (22) that is arcuate and extends in the front-rear direction is provided.
[0017]
Before After clamp (15) (16) is of the same structure, respectively, stand (13) fixed portion which is fixed to (14) and (23), rubber pressing wire material (1) on the upper surface of the platform A movable portion (24) having a pressing portion (25) and a handle portion (26) for moving the movable portion (24) in the clamping direction or the unclamping direction.
[0018]
As shown in FIGS. 4 and 5, the movable base (14) is provided with a female screw portion (27) extending in the front-rear direction at the rear portion thereof, and extends in the front-rear direction having a larger diameter than the female screw portion (27). round hole (28) is continuous with the female threaded portion (27) is provided to the front end surface of the movable base (14). The feed screw device (17) includes a rod-shaped male screw (29) screwed into the female screw portion (27), and a cylindrical non-threaded portion (30) formed at the front end of the male screw (29). It has a bearing (31) that supports the non-threaded portion (30) so that it can rotate and cannot move in the front-rear direction, and a rotary handle (32) fixed to the front end of the non-threaded portion (30). .
[0019]
The wire terminal forming operation by the wire terminal forming apparatus (10) is performed as follows.
[0020]
First, the cover (20) of the heater case (12) in the opened state as shown by the chain line in FIG. 5, more holding the leading end of the wire (1) to the clamp (16) of the movable base (14), the wire The parts on both the front and rear sides of the heated part (1b) of the wire rod (1) are positioned so that the heated part (1b) of (1) just faces the hot air blowing part (11a) of the heater (11). 14) and the guides (22) and (21) of the fixing base (13). Next, the wire (1) is held by the clamp (15) of the fixing base (13), and the cover (20) of the heater case (12) is closed. Next, the handle (32) of the feed screw device (17) is rotated, and the movable base (14) is moved slightly forward so that the wire (1) is tensioned enough to eliminate looseness. Next, the heater (11) is turned on, and after heating the heated portion (1b) of the wire rod (1) for a predetermined time, the handle (32) of the feed screw device (17) is rotated to move the movable base (14 ) Further forward. The movement of the movable table (14) at this time is continued until the wire (1) is cut at the heated portion (1b). Thereby, the wire (1) which has the front-end | tip part (1a) of length L as shown in (c) of FIG. 2 is obtained. In the above wire rod end forming device (10), the hot air blowing portion (11a) of the heater (11) is formed in a long shape in the front-rear direction, so the heated portion (1b) of the wire rod (1) has a certain length. This portion (1b) is elongated and cut so that the obtained wire (1) has a length L (1a) of the tip portion (the portion with a reduced wire diameter). In addition, the shape of the tip (1a) is conical (the cross section is circular everywhere). Accordingly, it is possible to very easily carry out the operation of passing the wire (1) to the die (2) shown in FIG.
[0021]
The wire terminal forming apparatus (10) is portable, but of course, a caster may be attached to facilitate transportation. The feed screw device (17) is moved by the manual handle (32). However, the feed screw device may be moved by motor drive .
[0022]
[ Effect of the invention]
According to the wire end molding equipment of the present invention, the tip of the wire after the treatment, (also tapered circular in cross-section which position) becomes as large a and its length conical, Merge to die hole Work and drawing work from the die hole (die wiring work) become extremely easy. In particular, when the wire diameter of the wire becomes small, the stiffness of the wire becomes weak, it is very difficult to apply a file etc., and there is a problem that it is difficult to make the cross-sectional shape of the tip part circular. According to the apparatus, it is possible to obtain a tip portion having a favorable cross-sectional shape regardless of the wire diameter of the target wire. Furthermore, work that has traditionally relied on individual skills can be performed regardless of individual skills, making it possible to unify processing techniques, saving labor, and enabling communication depending on whether the worker is a veteran or a beginner. It is also possible to obtain an effect that the working time can be made constant by eliminating the line time difference.
[Brief description of the drawings]
1 is a diagram schematically illustrating a wire-passing operation in drawing machine which is an example of the wire end molding equipment according to the invention is used.
FIG. 2 is a diagram schematically showing a wire terminal forming process by the wire terminal forming apparatus of the present invention.
FIG. 3 is a plan view showing a wire terminal forming apparatus according to the present invention.
FIG. 4 is a side view of the same.
5 is a cross-sectional view taken along line VV in FIG.
[Explanation of symbols]
(1) Wire rod
(11) Heating data
( 10) Wire terminal molding equipment
(11a) Hot air blowing part
(13) Fixed base
(14) Movable stand
(13a) (14a) Step
(15) before clamping
(16) Rear clamp
(17) the feed screw equipment
(21) (22) Wire guide groove
(23) Fixed part
(24) Moving parts
(25) Holding part
(26) Handle part

Claims (1)

A wire terminal forming device for facilitating a wire connecting work to a die for reducing the wire diameter of a wire , a heater (11) having a hot air blowing portion (11a) having a long shape in the front-rear direction, and a heater (11 ) Hot wire blowing part (11a) provided on the rear side of the wire rod mounting fixed base (13), and the heater (11) on the front side of the hot air blowing part (11a) of the wire rod mounting movable table and (14), fixing base and front provided (13) a clamp (15), a clamp (16) after being provided on the movable base (14), feed screw devices for moving the movable base (14) to the front (17), and the front end of the fixed base (13) and the rear end of the movable base (14) are respectively provided with stepped portions (13a) (14a) that are higher than the other parts. The step portions (13a) and (14a ) are provided with wire rod guide grooves (21) and (22) extending in the front-rear direction with an arcuate cross section , and the front and rear clamps (15) and (16) are respectively mounted on a base ( 13) Fixed part (23) fixed to (14 ) and wire rod A movable portion having a rubber pressing portion (25) for pressing the (1) to a table top (24), a handle portion for moving the movable part (24) in the clamping direction or an unclamping direction and (26) and that the wire terminal forming apparatus.

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