CN103302393A - Cold welding die - Google Patents
Cold welding die Download PDFInfo
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- CN103302393A CN103302393A CN201210322296XA CN201210322296A CN103302393A CN 103302393 A CN103302393 A CN 103302393A CN 201210322296X A CN201210322296X A CN 201210322296XA CN 201210322296 A CN201210322296 A CN 201210322296A CN 103302393 A CN103302393 A CN 103302393A
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Abstract
A cold welding die (1) of the invention comprises a pair of die pieces ((1a,1b), (1c,1d)) forming double dies (1A,1B) of a coil clamping head portion (2) holding wires (11), wherein the cold welding die (1) allows the double dies (1A,1B) to be abut jointed and the wires held by the coil clamping head portion (2) to be jointed. As for the profile shape of the coil clamping head portion (2), the longitudinal length is greater than the lateral length, and the profile area of the coil clamping head portion (2) is greater than that of the wires (11), when the direction of the wires (11) held by the coil clamping head portion (2) is set as lateral direction, and the direction orthogonal to the lateral direction is set as longitudinal direction.
Description
Technical field
The present invention relates to for the cold welding mould that links wire rod.
Background technology
Cold welding technique as one of technique that links wire rod, generally be the mould of between two vee-blocks on the top of the framework that is disposed in opposite directions cold press welder, packing into, and the bar that axle is supported on the framework rotate, thus, two vee-blocks are pressed mutually, and the wire rod that has inserted is docked in cold welding between mould.Mould is made of 4 matrixs, consists of nib by gathering together.Mould is with the mode of the inclined plane butt of the inclined plane of matrix and the vee-block vee-block of packing into.In nib, insert wire rod, and its end is docked mutually.When beginning to connect operation, mould is at first towards the moving direction pressure welding of vee-block.Then, mould slides along the inclined plane of vee-block, also in the direction of principal axis pressure welding of nib, thus the interface of compressed wire (for example, with reference to patent documentation 1).
The mould in the past that cold press welder as described above adopts has the wire rod grasping part at the mould central portion, forms a plurality of grooves with its quadrature in the wire rod grasping part, prevents wire rod skid (for example, with reference to patent documentation 2).
Patent documentation 1: Japanese kokai publication hei 8-57662 communique
Patent documentation 2: the real fair 3-40470 communique of Japan
For the mould in the past that uses in the general cold press welder such shown in the above-mentioned patent documentation 1, usually the shape of nib forms cylindric with the external diameter coupling of wire rod.Therefore, if the external diameter of wire rod is less than nib, then wire rod can skid, if larger than nib, then wire rod can not enter nib fully, if the problem that exists the unmatched words of shape of nib and wire rod then can't carry out sufficient cold welding.
In addition, for the mould in the past shown in the above-mentioned patent documentation 2, think by being arranged on the groove of wire rod grasping part, can absorb a little the uneven of wire rod external diameter.But when the wall of wire rod was nipped groove, the worry wire rod can not be thrown off from the wire rod grasping part and can't be carried wire rod, can't carry out fully cold welding.In addition, if consider uneven, the uneven of coverlay thickness that insulate of the conductor diameter of actual wire rod, only the words by groove can't fully absorb the uneven of wire rod external diameter.
Summary of the invention
The present invention makes in order to address the above problem, even purpose is to obtain also can carry out the cold welding mould of sufficiently stable cold welding in the uneven situation of wire rod external diameter.
Cold welding of the present invention is with standby two bimodulus that are made of the coil clamp head a pair of matrix of mould, described coil clamp head grasps wire rod, described cold welding makes two described bimodulus docking and the described wire rod that is grasped by described coil clamp head is engaged with mould, wherein, the section shape of described coil clamp head for compare with the size that described coil clamp head grasps the 1st direction of described wire rod, the shape longer with the size of the 2nd direction of described the 1st direction quadrature, and the area of section of described coil clamp head is larger than the area of section of described wire rod.
The invention effect
Cold welding of the present invention is with standby two bimodulus that are made of the coil clamp head a pair of matrix of mould, described coil clamp head grasps wire rod, described cold welding makes two described bimodulus docking and the described wire rod that is grasped by described coil clamp head is engaged with mould, wherein, the section shape of described coil clamp head for compare with the size that described coil clamp head grasps the 1st direction of described wire rod, the shape longer with the size of the 2nd direction of described the 1st direction quadrature, and the area of section of described coil clamp head is larger than the area of section of described wire rod.Therefore, can when having grasped wire rod by the coil clamp head, in coil chuck section, the gap be set, can make because of the remaining wall of the uneven wire rod that produces of the external diameter of wire rod and escape to the gap of coil clamp head.Therefore, even in the uneven situation of the external diameter of wire rod, also can the gap by the coil clamp head absorb that this is uneven, can carry out sufficiently stable cold welding.
Description of drawings
Fig. 1 is cold welding that embodiment of the present invention 1 is shown with the stereogram of the structure of mould.
Fig. 2 is cold welding that embodiment of the present invention 1 is shown with the exploded perspective view of the structure of mould.
Fig. 3 is cold welding that embodiment of the present invention 1 is shown with top view and the profile of the structure of mould.
Fig. 4 is the key diagram that the action of mould is used in the cold welding of explanation embodiment of the present invention 1.
Fig. 5 is cold welding that embodiment of the present invention 1 is shown with the figure of the section shape of the coil clamp head of mould.
Fig. 6 is illustrated in the figure that has configured the state of wire rod in the coil clamp head shown in Figure 5.
Fig. 7 is illustrated in the figure that has configured the state of wire rod in the coil clamp head shown in Figure 5.
Fig. 8 is illustrated in the figure that has configured the state of wire rod in the coil clamp head shown in Figure 5.
Fig. 9 is the figure of section shape of coil clamp head that the comparative example of embodiment of the present invention 1 is shown.
Figure 10 is cold welding that embodiment of the present invention 2 is shown with the figure of the section shape (the 1st example) of the coil clamp head of mould.
Figure 11 is cold welding that embodiment of the present invention 2 is shown with the figure of the section shape (the 2nd example) of the coil clamp head of mould.
Figure 12 is cold welding that embodiment of the present invention 2 is shown with the figure of the section shape (the 3rd example) of the coil clamp head of mould.
Figure 13 is cold welding that embodiment of the present invention 2 is shown with the figure of the section shape (the 4th example) of the coil clamp head of mould.
Figure 14 is cold welding that embodiment of the present invention 3 is shown with the profile of the structure of mould.
Figure 15 is for the stereogram as cold press welder reference diagram, that put down in writing in the patent documentation 1.
The specific embodiment
Fig. 1 is cold welding that embodiment of the present invention 1 is shown with the stereogram of the structure of mould, and Fig. 2 is cold welding with the exploded perspective view of the structure of mould.Fig. 3 is top view and the profile that the structure of mould is used in cold welding, and upper right among the figure is top view, and the figure shown in the top view left side is the A-A profile of top view, and the figure shown in the top view downside is the B-B profile of top view.
Such as Fig. 1 ~ shown in Figure 3, cold welding is with below the mould 1(, as mould 1.) consisted of by 4 matrix 1a ~ 1d.Matrix 1a and matrix 1b consist of bimodulus 1A in pairs, and matrix 1c and matrix 1d consist of bimodulus 1B in pairs, and these two bimodulus 1A, 1B consist of mould 1 in pairs.
The action of mould 1 describes in detail in the back, grasps a side wire rod 11 with bimodulus 1A, grasps the opposing party's wire rod 11 with bimodulus 1B, each bimodulus 1A, 1B docking, thereby pressure welding one side's wire rod 11 and the opposing party's wire rod 11.
At the matrix 1a that consists of bimodulus 1A and the involutory surface 10 of matrix 1b slot part 2a is set, by making matrix 1a and matrix 1b involutory, consists of the coil clamp head 2 that wire rod 11 grasps usefulness by this slot part 2a.For wire rod 11 is easily carried out towards the insertion of slot part 2a, the insert port side of the wire rod 11 of coil clamp head 2 is the taper expansion towards the end face of matrix 1a, 1b, consists of wire rod and inserts guide portion 3.The aspis side of the wire rod 11 of coil clamp head 2 becomes the docking section 4 that the wire rod 11 of bimodulus 1A side docks with the wire rod 11 of bimodulus 1B side, when bimodulus 1A, 1B docking is pressed, and docking section 4 docking of each bimodulus 1A, 1B, pressure welding two wire rods 11.Around the docking section 4 of bimodulus 1A, 1B, be provided for taking off the burr incorporating section 5 of the burr (バ リ) that in the cold welding process of wire rod 11, produces.
The structure of bimodulus 1B is the same with the structure of bimodulus 1A, and description thereof is omitted.
The mould 1 of present embodiment 1 is configured in the position of mould shown in Figure 15 10, and wire rod 11 is carried out cold welding.
Below, the action during to the cold welding of mould 1 describes.Fig. 4 is the key diagram of action of explanation mould 1, is the figure that observes mould 1(matrix 1a ~ 1d) from the top.At the both sides of mould 1 configuration vee-block 6.In addition, wire rod 11 is kept by finger 7.In addition, among Fig. 4, the central shaft of wire rod 11 is shown with the single-point line.In addition, in order to should be readily appreciated that the action of mould 1, be shown in broken lines coil clamp head 2 and wire rod and insert guide portion 3.
Originally, shown in Fig. 4 (a), each matrix 1a ~ 1d is to have kept the state configuration at interval.Under this state, the 3 side direction coil clamp heads of wire rod insertion guide portion separately, the 2 insertion wire rods 11 from bimodulus 1A, 1B keep wire rods 11. by finger 7 under the state that makes 11 docking of two wire rods
Then, shown in Fig. 4 (b), when the vee-block 6 of the both sides of mould 1 is pressed to the inside, each matrix 1a ~ 1d vee-block to press direction (direction among the figure shown in the arrow A) mobile.And, in the coil clamp head 2 of the coil clamp head 2 of the bimodulus 1A that consists of by matrix 1a, 1b and the bimodulus 1B that consists of by matrix 1c, 1d, take in wire rod 11 respectively, grasp wire rod 11 by coil clamp head 2.At this moment, bimodulus 1A and bimodulus 1B still keep the interval.
Then, shown in Fig. 4 (c), when further vee-block 6 being pressed to the inside, each matrix 1a ~ 1d slides at the direction of principal axis (direction among the figure shown in the arrow B) of wire rod 11 along the inclined plane of vee- block.Bimodulus 1A, 1B docking, two wire rods that grasped by the coil clamp head 2 of each bimodulus 1A, 1B are compressed and engage.The part of the wire rod 11 that has compressed becomes burr, and 5 release towards the burr incorporating section.
Herein, in the operation shown in Fig. 4 (b), wire rod 11 does not overflow and the state that is accommodated in the coil clamp head 2 and grasped by coil clamp head 2 is the state of expectation.Grasp wire rod by the state lower coil chuck section 2 in this expectation, thereby can in the operation shown in Fig. 4 (c), stably carry out the joint of two wire rods 11.
Then, the section shape of coil clamp head 2 at length described.
Fig. 5 is the figure of section shape that the coil clamp head 2 of present embodiment 1 is shown, and is that the C-C section with the plane of Fig. 3 amplifies and schematically illustrated figure.Fig. 6 is illustrated in the coil clamp head shown in Figure 52 interior states that configure wire rod 11.
Such as Fig. 5, shown in Figure 6, the section shape of the coil clamp head 2 of present embodiment 1 is that diameter and central angle (＜180 °) 2 circular arcs about equally are combined to form.Particularly, coil clamp head 2 is by the circular-arc slot part 2a of matrix 1c side and circular-arc involutory formation of slot part 2a of matrix 1d side.
When the direction that coil clamp head 2 is grasped wire rod 11 (direction of arrow C among the figure) be set as the 1st direction laterally, and will be vertical (direction of arrow D among the figure) as the 2nd direction with the direction setting of its quadrature the time, the section shape of coil clamp head 2 for take laterally as minor axis S, take vertically as the shape of vertical length of longitudinal axis L.The length of setting minor axis S for is below the diameter of wire rod 11, and the diameter of the Length Ratio of longitudinal axis L formation 11 is large, and the area of section of coil clamp head 2 is larger than the area of section of wire rod 11.In addition, herein, the diameter of wire rod 11 refers to, in the situation with the insulation coverlay that covers conductor, also comprises the external diameter of wire rod 11 of the thickness of this insulation coverlay.
The coil clamp head 2 of such section shape is by grasping wire rod 11, thereby not only laterally, the also center of centering wire rod 11 in the vertical.That is, can with the longitudinally position of the position at the diameter center of the wire rod 11 mode centering wire rod 11 consistent with the center of longitudinal axis L, grasp with gap wire rod 11 by the up and down maintenance at wire rod 11.As shown in Figure 6, wire rod 11 is configured in its diameter center and the longitudinal axis L of coil clamp head 2 and consistent such position, center of minor axis S.
In addition, the formation method of coil clamp head 2 can be any method, for example, be the hole of circle shape at the involutory section that arranges under the state of matrix 1c, 1d, then, by cutting the interface of each matrix 1c, 1d, can form circular-arc slot part 2a by the involutory surface after the grinding of each matrix 1c, 1d thus.
The wire rod 11 that has configured with the diameter of the minor axis S equal length of coil clamp head 2 has been shown among Fig. 6, has increased gradually the example of the diameter of wire rod shown in Fig. 7, Fig. 8.Among Fig. 7, Fig. 8, solid line illustrates the wire rod 11b of the state that is grasped by coil clamp head 2 and be out of shape, and is shown in dotted line the shape of the wire rod 11a before the distortion.By figure also as can be known, because the shape of the lengthwise that is shaped as 2 circular arcs involutory of coil clamp head 2, therefore, the diameter of wire rod than the large situation of the minor axis S of coil clamp head 2 under, grasped by coil clamp head 2, wire rod lengthways is out of shape, and wire rod 11 does not overflow and is accommodated in the coil clamp head 2.Even further increase the diameter of wire rod than the situation of Fig. 7, Fig. 8, if compare the area of section of wire rod with the area of section of coil clamp head less, then wire rod 11 can not overflow and be accommodated in the coil clamp head 2.For coil clamp head 2, even in the uneven situation of the diameter of wire rod, also can allow wire rod not overflow and be accommodated in reliably in the coil clamp head 2, under the state of expectation, grasp wire rod, can stably carry out cold welding.
Herein, as a comparative example, with reference to Fig. 9 section shape is considered for the situation of circular coil clamp head.Section shape in coil chuck section is in the situation of circle, if the diameter of the diameter of coil clamp head and wire rod is inconsistent, then can't grasp wire rod under the state of expectation.This be because, if the diameter of wire rod is less than the diameter of coil clamp head, then wire rod can skid, if the diameter of wire rod is larger than the diameter of coil clamp head, then the wall of wire rod overflows and towards outstanding between the involutory surface (E among the figure) of coil clamp head.Therefore, if the such section shape of comparative example is circular coil clamp head, then exist when uneven when the diameter of wire rod, then can't grasp wire rod under the state of expectation, the amplitude of the diameter dimension scope of the wire rod that can grasp under the state of expectation is the degree of maximum tens μ m.
Relative therewith, in the coil clamp head 2 of present embodiment 1, escape to the gap of coil clamp head 2 because the remaining wall energy of wire rod 11 is enough when grasping wire rod, therefore, the amplitude of the diameter dimension scope of the wire rod that can grasp under the state of expectation surpasses several 100 μ m.In addition, the amplitude of the diameter dimension scope of wire rod can compare and free setting by the length axial length of adjusting coil clamp head 2.
Like this, by the section shape that makes coil clamp head 2 be make 2 circular arcs involutory the shape of lengthwise, thus, can increase the amplitude of the diameter dimension scope of the wire rod 11 that can be carried out by the mould 1 of 1 pattern cold welding.This means, not only can fully allow uneven, insulation coverlay thickness uneven of the conductor diameter of wire rod 11, and in the different situation of the diameter dimension of wire rod, mould 1 that also can enough 1 patterns is not in the situation that carry out workshop section and change operation (section is got for え) and carry out cold welding.
For example, on wire rod production line, when common wire production, do not carry out the link operation of wire rod by cold welding, when only changing operation in the workshop section of supplying material, the use of supplying material to occur connecting terminal and use the link operation that cold welding is carried out of passing through at top.Relative therewith, for example, on motor production line, when common motor is produced, while occur being connected in each workpiece be stretched in many places the wire rod that has been wound each other pass through the link operation that cold welding is carried out.
The mould 1 of present embodiment 1 also can use at the so low line of link frequency that cold welding carries out that passes through of wire rod production line, but especially, uses at the high motor production line of link frequency that is undertaken by cold welding, can further bring into play effect.
Below, the effect that the mould 1 with present embodiment 1 is used in the situation on the motor production line for example describes.
At first, on the high line of the link frequency of as motor production line, being undertaken by cold welding, can fully allow uneven, the uneven of coverlay thickness that insulate of the conductor diameter of wire rod, therefore, can prevent from linking bad generation and help product quality to improve.
In addition, on the motor production line, although for the machine of each product, the diameter of wire rod is different, need not to make die for special purpose for the machine of each product, also need not workshop section and changes operation, therefore, can help the productivity of production scene to improve.
In addition, by the mould 1 of present embodiment 1, can provide that precision is high, also high cold welding of productivity, therefore, can on motor production line, stably adopt cold welding technique.The link of being undertaken by cold welding technique is the linking method of pressing wire rod each other and having utilized the metal combination in the newborn face of metal (unoxidized pure metal surface), therefore, relies on stress unlike the link of splicing ear.For example, aluminium be through the time produce the metal of creep (stress mitigations), even by splicing ear link aluminum steel, the aluminum steel that has been pressed also can through the time be out of shape.Therefore, the stress relieved of splicing ear, thus the change of the resistance of linking part causes quality bad greatly.Relative therewith, by cold welding, can link reliably aluminum steel.As mentioned above, by the mould 1 of present embodiment 1, can adopt cold welding technique at motor production line, therefore, even adopting in the situation of aluminum steel as the winding of motor, also can link reliably and realize the raising of quality.
In addition, when the mould 1 by present embodiment 1 carries out cold welding, the diameter of wire rod as shown in FIG. 8 than the large situation of the minor axis S of coil clamp head 2 under, in its cold welding section, the shape 11b distortion of the section shape of wire rod from circular 11a to lengthwise.But, when motor is produced, link the wire rod reeled each other in the production process of such final products, the distortion of the wire rod shape of cold welding section can not become problem especially.
As mentioned above, in the present embodiment 1, the section shape of coil clamp head 2 is the laterally shape of length of longitudinal size ratio, and the area of section of coil clamp head 2 is larger than the area of section of wire rod 11.Therefore, when grasping wire rod 11 by coil clamp head 2, between coil chuck section 2, the gap is set, escapes to the gap of coil clamp head 2 because the uneven remaining wall energy that produces of the external diameter of wire rod 11 is enough.Therefore, even in the uneven situation of the external diameter of wire rod 11, also can the gap by coil clamp head 2 absorb that this is uneven.Coil clamp head 2 is accommodated in the coil clamp head 2 wire rod 11 reliably under the situation of not overflowing, grasp wire rod 11 under the state of expectation, therefore, can carry out sufficiently stable cold welding.
In addition, the shape of the lengthwise of the section shape of coil clamp head 2 is involutory 2 circular arcs, therefore, the lengthwise position ground that coil clamp head 2 can centering wire rod 11 is controlled.Therefore, the wire rod 11 that is grasped in bimodulus 1A side does not produce the position skew during with wire rod 11 compressed joint that is grasped in bimodulus 1B side between two wire rods 11, just can more stably carry out cold welding.
In addition, in the present embodiment 1, at each matrix identical shaped circular-arc slot part is set, makes 2 circular-arc slot parts involutory and formed the coil clamp head of elongate shape, but also can make each matrix slot part be shaped as identical shaped.The shape of coil clamp head also can be can be when having grasped wire rod wire rod have up and down a such elongate shape in gap, for example, can be to have made up different circular arcs or straight line and the shape that forms.In addition, also can be elliptical shape or polygon-shaped.
In addition, for the mould 1 of present embodiment 1, so long as can carry out the wire rod of cold welding material, the wire rod of which type of material can both carry out cold welding.In addition, a pair of wire rod of cold welding also can be diverse metal material.In addition, the wire rod of cold welding has the naked coverlay not limit.
In the above-mentioned embodiment 1, the elongate shape that the section shape of coil clamp head 2 is involutory matrix (1a, 1b), the circular-arc slot part 2a of (1c, 1d) forms, but the section shape of coil clamp head 2 might not be limited to this as described above.In the embodiment of the present invention 2, describe with the other example of 4 examples to the section shape of coil clamp head with reference to Figure 10 ~ Figure 13.In addition, the structure beyond the section shape of coil clamp head is the same with above-mentioned embodiment 1, and also description thereof is omitted to be attached with same-sign.
The section shape of the coil clamp head 2A of the 1st example shown in Figure 10, and the section shape of the coil clamp head 2B of the 2nd example shown in Figure 11 be the polygon of lengthwise, the both lateral sides that grasps the coil clamp head of wire rod 11 becomes V literal.Figure 10 shows hexagonal situation, and Figure 11 shows tetragonal situation.
Among coil clamp head 2A, the 2B of this shape, therefore the same with above-mentioned embodiment 1 with the literal wire rod 11 that grasps of the V of coil clamp head 2A, 2B, Yi Bian centering wire rod 11 make having up and down with gap of wire rod 11 grasp wire rod 11 on one side.
And the same with the situation of above-mentioned embodiment 1, the remaining wall energy of the wire rod 11 that produces during the coil clamping is enough to be escaped to the gap of coil clamp head 2, therefore, and diameter dimension that can corresponding wire rod 11 uneven.
In addition, in coil clamp head 2A, the 2B of this section shape, for so that during not because of cold welding the nip V word section of coil clamp head 2A, 2B of wire rod 11 divide the conveying that produces wire rod 11 bad, material, thickness, coefficient of friction of preferably considering the literal hardness of V, surface roughness and wire rod and insulation coverlay etc. determined the angle that V is literal.
Next, the 3rd example and the 4th example of present embodiment 2 are described.
The section shape of the coil clamp head 2C of the 3rd example shown in Figure 12 is the rectangle of lengthwise.In addition, the section shape of the coil clamp head 2D of the 4th example shown in Figure 13 is the hexagon of lengthwise.Even coil clamp head 2C, the 2D of this shape, also can grasp with gap wire rod 11 in the up and down maintenance of wire rod 11, the same with the situation of above-mentioned embodiment 1, the remaining wall energy of wire rod 11 is enough to be escaped to the gap of coil clamp head 2, therefore, diameter dimension that can corresponding wire rod 11 uneven.
In addition, in coil clamp head 2C, the 2D of this section shape, the face that grasps the both lateral sides of wire rod 11 is parallel plane, therefore, and the lateral attitude of centering wire rod 11 by grasping wire rod 11, but do not have the function of the lengthwise position of centering wire rod 11.The position skew of wire rod especially becomes the bad main cause of cold welding in the thin wire rod of diameter dimension, therefore, the section shape that adopts the coil clamp head be rectangle or roughly rectangular mould carry out in the situation of cold welding the preferred alignment function by introducing in addition wire rod at cold press welder or prevent the generation that pressure welding is bad as the pressure welding object with the thick wire rod of diameter dimension.
In the embodiment of the present invention 3, on the basis of the structure of the mould 1 of above-mentioned embodiment 1, at the inner peripheral surface of coil chuck section the groove that extends along circumferentially is set.Figure 14 illustrates the cold welding of embodiment of the present invention 3 with the profile of the structure of mould, is the figure corresponding with the A-A section shown in Figure 3 of embodiment 1.For the structure except being provided with groove in coil chuck section, the same with above-mentioned embodiment 1, be attached with same-sign and description thereof is omitted.
The coil clamp head 2E of embodiment of the present invention 3 is the same with above-mentioned embodiment 1, and 2 elongate shape that circular arc forms that section shape has been involutory at the inner peripheral surface of the coil chuck 2E of section, are arranged at intervals with a plurality of circumferential slots 8 in accordance with regulations on the axis direction of wire rod.In the present embodiment 3, the circumferential complete cycle ground that groove 8 spreads all over coil clamp head 2E extends.The same with the coil clamp head 2 of above-mentioned embodiment 1, the coil clamp head 2E of present embodiment 3 is (with reference to Fig. 2) that the circular-arc slot part 2a by involutory involutory surface setting at matrix 1a, 1b consists of.Therefore, at the slot part 2a of each matrix 1a, 1b, the degree of depth is carved with the orthogonal slot with the axis direction quadrature of wire rod in advance in accordance with regulations, and thus, when involutory matrix 1a, 1b, the inner peripheral surface at the coil chuck 2E of section as present embodiment 3 consists of circumferential groove 8.
In addition, the formation method of the groove 8 of coil clamp head 2E can be any means, for example can form by the following method.For example be the hole of circle shape at the involutory section that arranges under the state of matrix 1a, 1b, then, with screw tap section be the circle shape the hole cut out screw thread, after this, the involutory surface of cutting matrix 1a, 1b, thus, the involutory surface after the grinding of each matrix 1a, 1b forms the circular-arc slot part (coil clamp head) that is carved with the orthogonal slot that becomes groove 8.
In addition, in the present embodiment 3, groove 8 is located at the circumferential complete cycle of coil clamp head 2E, but also can not necessarily be arranged on complete cycle, also can be arranged on the circumferential part.But the part that needs to grasp at least wire rod 11 in the inner peripheral surface of the coil chuck 2E of section sets in advance circumferential groove.In addition, be provided with a plurality of grooves 8 herein, but the number of groove 8, interval can be set suitably as required.
As mentioned above, in the present embodiment 3, on the basis of the structure of above-mentioned embodiment 1, inner peripheral surface at the coil chuck 2E of section arranges the groove 8 that extends along circumferentially, therefore, prevent that the wire rod 11 that has been grasped by coil clamp head 2E from skidding, and can carry out more stable cold welding when cold welding.
Herein, if be that the coil clamp head of circular arranges the such circumferential groove of present embodiment 3 at the section of comparative example shown in Figure 9, then the diameter dimension of wire rod than the large situation of the diameter of coil clamp head under, worry that wire rod nips groove and can't carry wire rod.
But in the present embodiment 3, the section shape of coil clamp head 2E is the shape of lengthwise, and the remaining wall energy of wire rod 11 is enough to be escaped to the gap of coil clamp head 2E.Therefore, the stress that can moderate inhibition puts on wire rod 11.Therefore, the remaining wall that can either prevent wire rod 11 is nipped in the groove 8 and can't be carried wire rod 11, can grasp wire rod 11 by the appropriate power of groove 8 usefulness again and prevent that wire rod 11 from skidding.
In addition, owing to can prevent that wire rod 11 from skidding, therefore, even have at wire rod 11 under the state of insulation coverlay, also can link wire rod each other in the situation that do not carry out the coverlay lift-off processing.
In addition, the present invention can be in its scope of invention each embodiment of independent assortment or each embodiment suitably is out of shape, omits.
Claims (5)
1. cold welding mould, it possesses two bimodulus that are made of the coil clamp head a pair of matrix, and described coil clamp head grasps wire rod, and described cold welding makes two described bimodulus docking and the described wire rod that is grasped by described coil clamp head is engaged with mould, wherein,
The section shape of described coil clamp head for compare with the size that described coil clamp head grasps the 1st direction of described wire rod, the shape longer with the size of the 2nd direction of described the 1st direction quadrature, and the area of section of described coil clamp head is larger than the area of section of described wire rod.
2. cold welding mould as claimed in claim 1, wherein,
The section shape of described coil clamp head is about equally the involutory shape that forms of 2 circular arcs.
3. cold welding mould as claimed in claim 2, wherein,
The section shape of described coil clamp head is: the size of described the 1st direction is below the diameter of described wire rod, and the size of described the 2nd direction is larger than the diameter of described wire rod.
4. cold welding mould as claimed in claim 1, wherein,
The section shape of described coil clamp head is polygon-shaped.
5. such as cold welding mould as described in each in the claim 1 ~ 4, wherein,
Inner peripheral surface at described coil clamp head is provided with circumferential groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012049946A JP5566413B2 (en) | 2012-03-07 | 2012-03-07 | Cold welding dies |
| JP2012-049946 | 2012-03-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103302393A true CN103302393A (en) | 2013-09-18 |
| CN103302393B CN103302393B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210322296.XA Expired - Fee Related CN103302393B (en) | 2012-03-07 | 2012-09-04 | Cold welding mould |
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| JP (1) | JP5566413B2 (en) |
| CN (1) | CN103302393B (en) |
Cited By (2)
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| EP3263270A1 (en) * | 2013-12-18 | 2018-01-03 | Takenobu Hongo | Cold pressure welding apparatus, coil manufacturing apparatus, coil and method of manufacturing the same |
| EP4230337A3 (en) * | 2013-12-18 | 2023-11-15 | Aster Co., Ltd. | An apparatus for manufacturing a coil and a coil manufacturing method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106063086B (en) | 2014-03-31 | 2019-05-07 | 三菱电机株式会社 | Motor, air blower and compressor |
| JP6612098B2 (en) * | 2015-09-25 | 2019-11-27 | 株式会社日立産機システム | Metal bonding wire manufacturing method and die |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3263270A1 (en) * | 2013-12-18 | 2018-01-03 | Takenobu Hongo | Cold pressure welding apparatus, coil manufacturing apparatus, coil and method of manufacturing the same |
| CN109274223A (en) * | 2013-12-18 | 2019-01-25 | 株式会社阿斯特 | Coil manufacturing method |
| US10211710B2 (en) | 2013-12-18 | 2019-02-19 | Aster Co., Ltd. | Cold pressure welding apparatus, coil manufacturing apparatus, coil, and method of manufacturing the same |
| US10742097B2 (en) | 2013-12-18 | 2020-08-11 | Aster Co., Ltd. | Cold pressure welding apparatus, coil manufacturing apparatus, coil, and method of manufacturing the same |
| CN109274223B (en) * | 2013-12-18 | 2021-12-03 | 株式会社阿斯特 | Coil manufacturing method |
| US11804757B2 (en) | 2013-12-18 | 2023-10-31 | Aster Co., Ltd. | Cold pressure welding apparatus, coil manufacturing apparatus, coil, and method of manufacturing the same |
| EP4230337A3 (en) * | 2013-12-18 | 2023-11-15 | Aster Co., Ltd. | An apparatus for manufacturing a coil and a coil manufacturing method |
| US11955850B2 (en) | 2013-12-18 | 2024-04-09 | Aster Co., Ltd. | Cold pressure welding apparatus, coil manufacturing apparatus, coil, and method of manufacturing the same |
| US12088158B2 (en) | 2013-12-18 | 2024-09-10 | Aster Co., Ltd. | Cold pressure welding apparatus, coil manufacturing apparatus, coil, and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103302393B (en) | 2016-03-30 |
| JP5566413B2 (en) | 2014-08-06 |
| JP2013184179A (en) | 2013-09-19 |
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