JP5214381B2 - Soldering apparatus and soldering method - Google Patents

Description

The present invention relates to a soldering apparatus required in the process of manufacturing, for example, a hard disk drive (HDD) mounted on a personal computer (PC), and is particularly effective when the joint surface of a workpiece is inclined obliquely. The present invention relates to an improvement of a soldering structure and a soldering method .

For example, when manufacturing an HDD mounted on a PC, the first soldering member, which is a workpiece, has a fine area (for example, 4 mm square) and the workpiece is a first through a large number of connection points (for example, 24 locations). There is a step of soldering two soldering members.
Conventionally, an operator peeks through a stereomicroscope, aligns the joining members with one hand, holds the soldering iron with the other hand, and solders one by one. Such work naturally requires skill, is inferior in workability, and remains uneasy about quality stability.

Therefore, thermocompression bonding by pulse heat and a method of soldering by dividing a light beam have come to be adopted. In this case, unlike the soldering work of one point at a time, skill is not required and it can contribute to the improvement of quality.
However, these soldering also has a problem. For example, in soldering by pulse heat, it is necessary to strictly control the parallelism of products. In addition, if the light beam is divided and soldered, the productivity is lowered.

In [Patent Document 1], the second soldering member is pressed “evenly” against the first soldering member on the holding tool by the pressing tool, and a plurality of pieces between the soldering members are arranged. There has been disclosed a soldering apparatus that includes a near-infrared radiation unit that heats a plurality of joints at the same time and solders a plurality of joints simultaneously. In addition, a joining location is a some terminal group provided in each soldering member.
JP-A-2005-51017

  In other words, there is no problem when the terminal group is lined up without unevenness on a single plane, but if there is unevenness even in part of the terminal group, the other terminal cannot contact the recessed terminal and soldering Will be defective. In [Patent Document 1], a comb-like pressing tool is constituted by a leaf spring material, and the tips of the comb-shaped teeth are elastically pressed against the soldering member uniformly.

  However, in the case where at least the second soldering member has a small area as described above, it is necessary to form a very small comb tooth-shaped tip, which takes time and effort. In this case, it is necessary that the soldering member has a strength capable of withstanding the tip of the comb-like tooth in an elastic pressing contact.

  If the second soldering member is a thin film material having a thickness of about 10 μm, for example, the strength of the second soldering member is low. When the tooth-like tips of the combs constituting the pressing material are in contact with dots, the elastic force is concentrated on the tips, and the soldering member may be damaged. Ideally, the entire surfaces of the first soldering member and the second soldering member are pressed uniformly and elastically except for the soldering point.

The present invention has been made on the basis of the above circumstances, and the object of the present invention is to follow the inclination angle of the workpiece joining surface even when the workpiece joining surface is tilted. Soldering that can hold the whole evenly, eliminates the need to strictly control the parallelism of the product, prevents deformation and breakage of the workpiece, ensures reliable soldering, and improves productivity and reliability An apparatus and soldering method are to be provided.

In order to satisfy the above object, the soldering apparatus of the present invention supports the first soldering member and the second soldering member, which are workpieces, superimposed on the upper surface of the workpiece support base, and supports the moving member. Provided so that it can be moved up and down along the side of the base, and the presser foot is composed of a leaf spring whose plate surface runs along a horizontal plane, one end is attached and fixed to the upper surface of the moving member, and the other end is the work support base It extends to the upper surface side of the movable member, and is folded back so as to be parallel to the extended portion while holding the plate surface in the horizontal plane from the extended end portion, and extends to the upper surface side of the moving member, and further from the extended end portion. While the plate surface is held in a horizontal plane, it is folded back so as to be parallel to the extension part and extended to the upper surface side of the work support base, and the folding and extension formation are sequentially performed while the plate surface is held in the horizontal plane. Repeat several times, finally level the plate The other end is extended to the upper surface side of the work support base while being held inside, and a work presser composed of a plate-like member having a predetermined thickness is attached and fixed to the final extension end of the presser foot to fix the moving member. The presser foot is elastically deformed along with the up-and-down movement, and the workpiece is pressed against the upper surface of the workpiece support base so that the inclination angle follows the inclination angle of the joint surface of the first soldering member and the second soldering member. Heats the workpiece through the workpiece presser and solders the first soldering member and the second soldering member.
The moving members are respectively provided on opposite sides of the work support base, the presser foot is attached to each moving member, and the work presser is supported on both sides by the presser foot in a double-supported structure. Is done.

  According to the present invention, the entire surface of the workpiece can be pressed uniformly and elastically following the joint surface of the workpiece, it is not necessary to strictly control the parallelism of the product, and deformation and breakage of the workpiece can be prevented. It is possible to prevent soldering and prevent soldering, thereby improving productivity and reliability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a soldering apparatus.
In the figure, reference numeral 1 denotes a work support. The work support 1 is composed of a base 2 that is installed on the part H to be installed, and a columnar base 3 that is integrally provided upright on the upper surface of the center of the base 2 and that is long (high) in the vertical direction. . The upper end surface of the pedestal portion 3 is a support surface portion 4, and supports the workpiece K in a state where the first soldering member a and the second soldering member b are overlapped.

  The workpiece K is, for example, a component of an HDD. The first soldering member a is a metal solid, and the second soldering member b is a thin film (about 10 μm). The joining surface of the first soldering member a and the second soldering member b is inclined by a predetermined angle with respect to the horizontal plane, and a large number of preliminary solders are provided with a narrow gap as a joining point. Yes.

  The positioning of the second soldering member b relative to the first soldering member a is performed by a positioning jig (not shown). Alternatively, the operator may simply hold the end portion of the second soldering member b with a tweezers and perform positioning with respect to the first soldering member a.

  In any case, since the second soldering member b has a thin film shape and relatively low strength, if the tip is sharply pressed with a sharp tip, the second soldering member b may be broken and pierce. Such a second soldering member b must be soldered to the first soldering member a through a number of joint points.

  A moving member 5 to be described later is attached to the base portion 3 constituting the work support base 1. That is, the guide piece portions 3 a are provided on the left and right sides of the base portion 3 along the vertical direction, and the piece portions 6 a provided on the elevating body 6 constituting the moving member 5 are provided on each guide piece portion 3 a. Are fitted together. The elevating body 6 is provided along the left and right sides of the work support 1.

  These elevating bodies 6 are connected to each other on the front side and the back side of the base 2 via horizontal members 7 provided in parallel to each other. Therefore, the left and right lifting bodies 6 and the front and rear horizontal members 7 constituting the moving member 5 surround the periphery of the base portion 3, and these can be moved up and down integrally along the vertical direction of the base portion 3. .

The moving range of the moving member 5 is such that the upper end surface of the lifting body 6 constituting the moving member 5 is always higher than the upper surface of the work support 1 by the arrangement structure of stoppers described below. Designed to be.

  That is, the hook-shaped upper stopper 8 is installed between the front and rear horizontal members 7 on both the left and right sides of the base 3. These upper stoppers 8 are located immediately below the guide piece 3a, and when the elevating body 6 and the horizontal member 7 are moved up and down integrally, the upper stopper 8 contacts the guide piece 3a at a predetermined position, Further upward movement of the elevating body 6 and the horizontal member 7 is restricted.

  In addition, a lower stopper 9 made of an elastic member is provided on the base 2 so as to be directly below the lifting body 6. The lower stopper 9 is configured such that when the elevating body 6 is lowered and biased, the lower end surface of the elevating body 6 abuts at a predetermined position, and further lowering movement is restricted. Since the lower stopper 9 has elasticity, the setting of the lowest position of the elevating body 6 has a certain width.

  A guide hole c made of a long hole is provided from the upper surface of the base 2 which is the lower end of the base 3 to a predetermined height, and a push-up biasing body 10 is attached to the guide hole c. The push-up biasing body 10 includes a compression spring 10 a and a pin 10 b attached to the upper end portion of the compression spring 10 a, and the pin 10 b is in contact with the lower end portion of the horizontal member 7.

That is, the push-up biasing body 10 elastically pushes up and biases the entire moving member 5 via the horizontal member 7. In the state where the pin 10b is in contact with the upper end of the guide hole c, further push-up action of the push-up biasing body 10 on the moving member 5 is restricted.
In this manner, the moving member 5 is configured, and a handle T is provided on the side surface of the lifting body 6 on the right side of the drawing. This handle T is for the operator to grip when the moving member 5 is moved up and down.

A presser unit P is attached to the upper end surface of the elevating body 6 constituting the moving member 5.
FIG. 3 is an exploded perspective view of the presser unit P, and FIG. 4 is a perspective view of the presser unit P in an assembled state.
The presser unit P is composed of two presser members 11 and one work presser 12, and supports both sides of the work presser 12 with the two presser members 11. Make.

  The pressing member 11 is attached to each of the left and right lifting bodies 6 constituting the moving member 5 and is made of, for example, a leaf spring material or a stainless material having a thickness of about 0.1 to 0.3 mm, and has elasticity. Have.

  The first connecting plate 11a, which is one end of each pressing member 11, is placed on the upper end surface of the elevating body 6, and the mounting plate 13 is overlapped with the mounting plate 14 together with the mounting plate 13 on the elevating body 6. It is fixed on the end face.

  The presser leg 15 is integrally projected from both sides of the first connecting plate 11a attached to the lifting body 6 of the presser member 11 in the longitudinal direction. That is, two sets of these presser legs 15 are provided in parallel on one presser member 11. The other ends of the presser legs 15 are integrally connected via the second connecting plate 11b.

  In other words, the presser member 11 includes the two sets of presser legs between the first connecting plate 11a attached to the lifting body 6 and the second connecting plate 11b protruding to the opposing lifting body 6 side. 15 will be formed.

  By processing one leaf spring material, the outer shapes of the first connecting plate 11a, the second connecting plate 11b and the presser foot 15 of the presser member 11 are formed, and the presser foot 15 is provided with a notch. It is done.

  The presser foot 15 will be described. One end is integrally formed on the first connecting plate 11a attached and fixed to the upper surface of the elevating body 6 constituting the moving member 5, and the other end is formed from here. The plate surface is provided with a first leaf spring portion d that extends toward the upper surface side of the work support 1 and whose plate surface extends along a horizontal plane.

  One end is connected to the extending end of the first leaf spring part d in a direction perpendicular to the extending direction while the plate surface is held in the horizontal plane, and the plate surface is held in the horizontal plane. The second leaf spring portion e is bent in parallel with the first leaf spring portion d, the plate surface is held in the horizontal plane, and the other end portion is extended to the upper surface side of the elevating body 6. I have.

Further, one end portion is connected to the extending end portion of the second leaf spring portion e in a direction orthogonal to the extending direction while the plate surface is held in the horizontal plane, and the plate surface is held in the horizontal plane. The third leaf spring portion f is bent as it is, parallel to the second leaf spring portion e, the plate surface is held in a horizontal plane, and the other end portion extends to the upper surface side of the work support 1. It consists of.
The extended end portion of the third leaf spring portion f, which is the final extended end portion, is integrally connected to the second connecting plate 11b.

On the other hand, the work presser 12 is made of a plate-like member which is a metal plate having a predetermined thickness. Both ends of the work retainer 12 have fixing portions 12a having the same area shape as the second connecting plate 11b of the pressing member 11, and the pressing portions 12b are provided between the fixed portions 12a.
The fixing portions 12a on both sides constituting the work retainer 12 are fixedly attached to the second connecting plate 11b via a fixture. Therefore, the work presser 12 is installed between both presser members 11, in other words, the work presser 12 is supported by the presser leg 15 on both sides in a double-supported structure.

In other words, two sets of lifting bodies 6 constituting the moving member 5 are provided on the opposite sides of the work support 1 in total, and two sets are provided, and the pressing member 11 is attached to each lifting body 6. Therefore, a total of two sets of pressing members 11 are provided.
Two sets of the presser legs 15 are configured in parallel to each of the presser members 11, and a total of four sets are attached. The work presser 12 is supported by two sets of presser legs 15 on opposite sides, and is supported at four points.

A soldering portion 17 formed of a lattice-shaped slit hole portion is provided at a substantially central portion of the presser portion 12b in the work presser 12. The opening shape of the whole slit hole part which comprises the said soldering part 17 corresponds with the area shape of the soldering site | part of the 1st soldering member a and the 2nd soldering member b.
A soldering point between the first soldering member a and the second soldering member b exists between the grids forming the soldering portion 17.

  As shown in FIG. 1 again, a heating source 18 is provided immediately above the support surface portion 4 formed on the uppermost surface of the work support base 1. The heating source 18 is composed of a laser or a xenon lamp, etc., irradiates the first and second soldering members a and b placed on the support surface portion 4 with light rays, and preheats them with the radiant heat. Can be melted.

  The soldering apparatus is configured as described above, and the first soldering member a and the second soldering member b are soldered. That is, as shown in FIG. 1, the first soldering member “a” and the second soldering member “b”, which are the workpieces K, are overlapped and positioned on the support surface portion 4 of the workpiece support 1.

  In this state, the work presser 12 is opposed to the upper part where the first soldering member a and the second soldering member b on the support surface portion 4 have a gap, and the presser foot constituting the presser member 11 is formed. The tool 15 and the work presser 12 are generally held in a horizontal plane. On the other hand, as described above, the joining surface of the first soldering member a with respect to the second soldering member b is inclined at a predetermined angle with respect to the horizontal plane.

The moving member 5 is pushed up by the push-up biasing body 10, and the upper stopper 8 provided on the horizontal member 7 is engaged with the lower end of the guide piece 3 a of the base 3, so that the moving member 5 and the work presser unit P are moved. The uppermost positions of the presser member 11 and the presser foot 15 constituting the same are regulated.
When the positioning of the first soldering member a and the second soldering member b, which are the workpieces K, on the support surface portion 4 is completed, the heating source 18 is energized to irradiate the workpiece with the emitted light, and the workpiece is heated. And the moving member 5 is urged downward with the handle T.

FIG. 2 is a schematic configuration diagram of a soldering apparatus showing a state in which the moving member 5 is biased downward.
The elevating body 6 constituting the moving member 5 descends along the guide piece 3 a provided on the base 3. The upper stopper 8 is separated from the guide piece 3a and is compressed and deformed against the elastic force of the compression spring 10a constituting the push-up biasing body 10.

  Finally, the lower end of the elevating body 6 comes into contact with the lower stopper 9 on the base 2, but the downward biasing of the moving member 5 is continued and the lower stopper 9 is elastically deformed. When the moving member 5 is urged downward, the position of the handle T at this time is held for a predetermined time. In this state, the work presser 12 comes into contact with the work K on the support surface portion 4, and the presser foot 15 is elastically deformed accordingly.

  FIG. 5 is a perspective view showing a state where the work presser 12 abuts against the second soldering member b of the work K, presses against the support surface portion 4 together with the first soldering member a, and the presser foot 15 is elastically deformed. FIG.

  As described above, the joining surface of the first soldering member a with respect to the second soldering member b constituting the workpiece K has an oblique shape that is low on the right side and high on the left side. The pressing member attached to the right-hand lifting body 6 in FIG. 5 is referred to as a “first pressing member 11A” for the convenience of description, and the pressing member attached to the left lifting body 6 is referred to as a “second pressing member” for convenience of description. It is referred to as “holding member 11B”.

  In the presser foot 15 constituting the first presser member 11A, the first leaf spring portion d holds the same horizontal plane as the upper end surface of the lifting body 6 or is inclined slightly upward, and the second leaf spring portion e is The third leaf spring part f is further inclined obliquely upward.

  The work presser 12 is on the extension of the third plate spring portion f plate surface of the presser foot 15 constituting the first presser member 11A, and the inclination angle of the work presser 12 is that of the first soldering member a. It follows the inclination angle of the joint surface.

  The second presser member 11B attached to the left lifter 6 in FIG. 5 is located on the upper side of the slope of the first soldering member a, but the lifter is attached to the presser foot 15 constituting the second presser member 11B. The upper end surface position of the body 6 is at the same height as the upper end surface position of the elevating body 6 on the right side of the figure.

  For this reason, in the presser foot 15 constituting the second presser member 11B, the third leaf spring portion f connected integrally with the work presser 12 is greatly inclined obliquely downward. The second leaf spring portion e is inclined downward with respect to the third leaf spring portion f, and the first leaf spring portion d is slightly inclined with respect to the second leaf spring portion e, Or keep almost horizontal.

  Eventually, the respective presser legs 15 constituting the first presser member 11A and the second presser member 11B are elastically deformed, and the inclination angle of the work presser 12 installed between them is changed to the first soldering member a. And the surface direction of the second soldering member b. Therefore, the work holder 12 presses the entire surfaces of the first soldering member a and the second soldering member b against the support surface portion 4 with a uniform pressing force.

  Actually, the work holder 12 is designed to apply a small load of about 5 to 30 g to the first soldering member a and the second soldering member b. Therefore, even if the second soldering member b to be pressed is a thin film having a thickness of about 10 μm, it does not need to be deformed.

  The radiated light emitted from the heating source 18 irradiates the second soldering member b through the soldering part 17 formed on the workpiece presser 12, and the first soldering member a together with the second soldering member b. Heat. The preliminary solder processed into the first soldering member a is melted, and the first soldering member a and the second soldering member b are soldered.

  As described above, the soldering apparatus according to the present invention can ensure a good contact state with an object to be soldered in an arbitrary target surface, and can always perform good soldering. The above effects can all be handled in the same manner as long as the presser foot 15 is provided, regardless of how the inclination angle of the joint surface of the first soldering member a that is the workpiece K changes.

  FIG. 6A is a view for explaining the change in inclination of the presser foot 15 in the presser members 11A and 11B when the inclination angle of the joint surface of the first soldering member a is changed, and FIG. 6B is a comparison. As an example, FIG. 6C is a perspective view of the pressers Za and Zb that are not provided with the presser foot 15, and FIG. 6C is a view for explaining a presser state of the pressers Za and Zb that are not provided with the presser foot 15;

  6A and 6B, the area between the two alternate long and short dash lines a1-a2 parallel to the vertical direction indicates the joint surface range of the first soldering member a.

  6A shows a state in which the presser foot 15 constituting the first presser member 11A is supported horizontally, and a small circle 11a on the right side of the alternate long and short dash line is shown. Is one end portion of the presser foot 15 attached and fixed to the lifting body 6, and the small circle 11b on the left side indicates the other end portion of the presser foot 15 to which the work presser 12 is attached.

  A horizontal alternate long and short dash line on the left side of the drawing shows a state in which the presser foot 15 constituting the second presser member 11B is supported horizontally, and a small circle 11a on the left side of the alternate long and short dash line is attached and fixed to the lifting body 6. One end of the presser foot 15 and the left small circle 11b indicate the other end of the presser foot 15 to which the work presser 12 is attached.

  6A, the case where the tilt angle of the joint surface a of the workpiece K is relatively large is shown on the upper side, and the case where the tilt angle is relatively small is shown on the lower side.

  When the work presser 12 comes into contact with and presses against the lower work joint surface a having a relatively small inclination angle, the presser foot 15 constituting the first presser member 11A changes as shown by a solid line in the figure. That is, the first leaf spring portion d is slightly inclined upward from the small circle 11a toward the line a2, the second leaf spring portion e is inclined upward from the line a2 side toward the small circle 11a, The third leaf spring portion f is inclined upward from the small circle 11a side toward the line a2 side.

  The position of the lifting / lowering body 6 attachment end (small circle 11a) in the first leaf spring part d is fixed, and as a result, the work clamp attachment end (small circle 11b) of the third leaf spring part e is a one-dot chain line in the vertical direction. Although the position shifts upward along a2, it does not deviate from this alternate long and short dash line a2.

  Also in the presser foot 15 constituting the second presser member 11B, the first leaf spring portion d to the third leaf spring portion f are inclined, but the lifting body mounting end portion (first plate spring portion d) ( The position of the small circle 11a) is fixed. And although the work clamp 12 attachment end part (small circle 11b) of the 3rd leaf | plate spring part f shifts | deviates upward along the dashed-dotted line a1 of the vertical direction, it does not shift | deviate from this dashed-dotted line a1.

  Further, when the work presser 12 abuts and presses against the upper work joint surface a having a relatively large inclination angle, the presser foot 15 constituting the first presser member 11A changes as shown by a broken line in the figure. To do. That is, only the inclination of the first leaf spring portion d to the third leaf spring portion f is changed with the respective lengths being maintained.

  Similarly, the position of the lifting / lowering body attachment end (small circle 11a) in the first leaf spring portion d is fixed, and the work presser attachment end (small circle 11b) of the third leaf spring portion f is a one-dot chain line in the vertical direction. Although the position shifts upward along a2, it does not deviate from this alternate long and short dash line a2.

Also in the presser foot 15 constituting the second presser member 11B, the first leaf spring portion d to the third leaf spring portion f are inclined, but the lifting body mounting end portion (first plate spring portion d) ( The position of the small circle 11a) is fixed. The work presser 12 attachment end portion (small circle 11b) of the third leaf spring portion f is displaced upward along the vertical one-dot chain line a2, but does not deviate from this one-dot chain line a2.

  Thus, no matter how the inclination angle of the joint surface of the first soldering member a changes, the presser foot 15 constituting the first and second presser members 11A and 11B changes the inclination angle of the joint surface. The first and second soldering members a and b, which are the workpiece W, are made to follow the workpiece presser 12 according to the inclination angle of the joint surface without shifting the attachment end (small circle 11b) position of the workpiece presser 12. The entire surface is pressed elastically.

  As described above, even if the solder object has a very small area (for example, 4 mm square), and there are a large number of solder points (for example, 24 pieces), the solder can be effectively and reliably soldered. Can be performed.

  In the above description, the joint surface of the first soldering member a is described as being a low inclined surface on the first pressing member 11A side and a high inclined surface on the second pressing member 11B side. Even if the inclination is high on the pressing member 11A side and low on the second pressing member 11B side, the same effect can be obtained.

  Moreover, it is not limited to the case where the joint surface of the first soldering member a is inclined to the left and right of the figure, and includes the above-described presser foot 15, and therefore, the case is inclined in the front-rear direction of the figure It is possible to cope with these problems, and the operational effects are not impaired at all.

  On the other hand, as shown in FIG. 6 (C) as a comparative example, the first presser Za and the second presser Zb made of a mere flat plate spring without the presser foot described above are manufactured. Then, consider the case where the above-mentioned work clamp 12 is attached. The interval between the lifting bodies 6 and the shape structure of the work presser 12 are the same as those of the above-described embodiment.

  In this case, only when the joining surface of the workpiece K is horizontal, the joining surface can be correctly pressed by the workpiece presser 12. In the state in which the joint surface of the workpiece K is tilted forward and backward in the drawing, the workpiece presser 12 is twisted and a strong elastic restoring force acts, but the workpiece presser 12 may follow the joint surface within a certain range. Is possible.

  However, when the joint surface of the workpiece K is inclined to the left and right, the workpiece presser 12 cannot be copied to the joint surface. That is, as shown in FIG. 6 (B), when the joint surface is inclined to the left and right, the first presser Za on the right side in the figure has the lifting body attachment side end portion 11a as a fulcrum and the work presser side end portion. 11b must be turned with the free end, and the second presser Zb on the left side of the figure must also be turned with the lifting / lowering body mounting side end 11a as a fulcrum and the work presser side end 11b as a free end. Don't be.

  Since each of the pressers Za and Zb is rotated so as to draw a circle having a radius from the center to the work presser side end (small circle 11b) from the center of the lift body attachment side (small circle 11a), The position of the presser side end portion 11b is inside the two one-dot chain lines a1 and a2 in the vertical direction, and displacements s1 and s2 occur, respectively.

  If each presser Za, Zb is a material that freely extends in the longitudinal direction, the work presser 12 follows the joint surface. However, the work presser 12 is formed from a mere leaf spring and does not extend, so the work presser 12 cannot be copied to the joint surface. . That is, such pressers Za and Zb cannot be employed.

In the above description, the structure in which the work presser 12 is supported by a both-end support structure has been described. However, a so-called cantilever structure in which the work presser 12 is supported by only one presser is also conceivable.
For example, the work presser 12 is supported only by the first presser Za shown in FIG. 6C, and the work presser 12 is held in a horizontal posture before soldering. In order to perform soldering, when the lifting body 6 is lowered and the work presser 12 comes into contact with the joint surface of the work K, the work presser 12 follows the joint surface because of the cantilever structure.

  However, since the presser Za does not extend at this time, the work presser 12 comes into contact with the second soldering member b in a state of rubbing the second soldering member b through the joint surface of the first soldering member a, and follows the joint surface. . As described above, if the second soldering member b is in the form of a thin film having a thickness of about 10 μm, it may be rubbed by the work holder 12 and may be damaged, and this structure cannot be employed.

  On the other hand, the presser foot 15 of the present invention has a result depending on any inclination angle in the first leaf spring portion d to the third leaf spring portion f even if the work presser 12 is supported by a cantilever structure. When the workpiece presser 12 comes into contact with the joining surface of the workpiece K, the workpiece retainer 12 follows the joining surface.

  Alternatively, it is a presser that cantilever-supports the work presser 12 and does not use an elevating body, and a structure that uses this attachment side end (small circle 11a) as a rotation fulcrum is also considered. That is, the work presser side end portion (small circle 11b) of the presser is set in a vertical posture, and after positioning the first soldering member a and the second soldering member b on the support surface portion 4, the presser is moved. Rotating force is applied.

  The workpiece presser 12 is placed on the second soldering member b and pressed against the first soldering member a. Although the amount of rubbing with respect to the second soldering member b is less than that of the above-described structure, the generation of small dust cannot be avoided and the cleanliness cannot be maintained with the rotation of the presser.

  Further, in this case, it is limited to the case where the joining surface of the workpiece K is inclined toward the rotating presser and is low on the presser side and high on the counter presser side. On the contrary, if the inclination is high on the presser side and low on the anti-presser side, the presser is caught on the end of the joint surface, and a gap is formed between the joint surface and the presser cannot be pressed. Therefore, such a presser cannot be used.

  Since the presser foot 15 of the present invention is composed of a plurality of leaf spring portions d to f, the work presser 12 follows the angle of the joint surface even if the joint surface angle of the work K changes. That is, even if the work presser 12 is supported by the presser foot 15 in a cantilever structure, if the presser foot 15 is moved up and down and the work presser 12 comes into contact with the work K, it follows this joint surface.

  If a mechanism for rotating and pressing the presser foot 15 is employed, small dust is generated with the rotation, and the cleanliness around the device cannot be maintained. Accordingly, as described above, the soldering apparatus of the present invention has a structure in which the moving member 5 is provided so as to be movable up and down along the side portion of the work support base 1 and one end portion of the presser foot 15 is attached to the moving member 5. Limited.

  FIG. 7 is a schematic configuration diagram of a soldering apparatus showing a modification. Here, the heating source structure is different, and the work support 1, the moving member 5, and the work pressing unit P are the same as those in the embodiment described above, but the light beam source 18 is not provided.

  The dimensions of the presser member 11, the presser foot 15 and the work presser 12 constituting the work presser unit P are exactly the same as those described above. However, the presser foot 15 needs to select an electrical insulating material in addition to having elasticity. The work holder 12 is made of an electric resistor and is connected to the power source 20 via the wiring 19.

  The work support 12 supports the entire surface of the first soldering member a and the second soldering member b while the work presser 12 follows the joint surface of the first soldering member a due to the presence of the presser foot 15. When elastically pressing against the surface portion 4, the work presser 12 is energized from the power source 20 to generate heat. The preliminary solder previously applied to the first soldering member a is melted and soldered to the second soldering member b.

  In this case, as described in the above embodiment, it is not necessary to attach the light beam source 18 for irradiating the light beam to the upper part of the work support 1 and the work presser 12 also serves as a heating source, so that the equipment configuration is improved. In addition to simplification, workability can be improved.

  As described above, here, two sets of presser legs 15 constituting one presser member 11 are connected by the first connecting plate 11a and the second connecting plate 11b. However, the present invention is not limited to this. The presser legs 15 may be attached to the lifting body 6 independently and in parallel with each other.

  In addition, each presser foot 15 has the first leaf spring portion d on the outside and the second leaf spring portion e to the third leaf spring portion f sequentially on the inside. The present invention is not limited, and the first leaf spring portion d may be the innermost side, and the second leaf spring portion e and the third leaf spring portion f may be sequentially arranged outward.

  Each presser foot 15 is composed of the first leaf spring portion d to the third leaf spring portion f. However, the present invention is not limited to this, and although not particularly illustrated, there are more numbers. You may make it comprise from a leaf | plate spring part.

  That is, this presser foot is a leaf spring in which one end is attached and fixed to the upper surface of the lifting body 6 and the other end extends to the upper surface side of the work support 1, and the plate surface is along the horizontal plane. The plate surface is folded from the extending end portion so as to be parallel to the extending portion while being held in the horizontal plane, and is extended to the upper surface side of the lifting / lowering body 6. Further, the plate surface is extended from the extending end portion to the horizontal plane. Folding is formed so as to be parallel to the extension portion while being held inside, and is extended to the upper surface side of the work support base 1. Further, a plurality of these folding formations and extension formations are sequentially performed while the plate surface is held in a horizontal plane. Repeatedly, the other end is extended to the upper surface side of the work support 1 while the plate surface is finally held in the horizontal plane.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

The schematic block diagram of the soldering apparatus based on embodiment in this invention. The schematic block diagram of the soldering apparatus explaining the state at the time of soldering based on the embodiment. The disassembled perspective view of the workpiece pressing unit according to the same embodiment. The perspective view of the work holding unit based on the embodiment. The figure explaining the state at the time of soldering of the work holding unit based on the embodiment. The figure explaining the state of the presser foot according to the inclination angle of the joint surface based on the embodiment, the figure explaining the state of the presser of a comparative example, and its perspective view. The schematic block diagram of the soldering apparatus based on the modification of the embodiment.

Explanation of symbols

  K ... Work, a ... First soldering member, b ... Second soldering member, 1 ... Work support, 5 ... Moving member, 15 ... Presser foot, 12 ... Work clamp, 18 ... Light beam source ( (Heating source), d... First leaf spring part, e... Second leaf spring part, f... Third leaf spring part, 17 .. slit hole part (soldering part).

Claims (5)

A workpiece support base for supporting the first soldering member and the second soldering member, which are workpieces, on the upper surface in a state of being overlaid;
A moving member provided so as to be movable up and down along the side of the workpiece support;
One end is attached and fixed to the upper surface of the moving member, and the other end extends to the upper surface side of the work support base. The plate surface is a leaf spring along a horizontal plane, and the plate extends from the extended end to the plate. The surface of the movable member is folded back so as to be parallel to the extended portion while the surface is held in the horizontal plane, and is extended to the upper surface side of the moving member, and further, the extended portion is held while the plate surface is held in the horizontal plane. Are folded back so as to be parallel to each other and extended to the upper surface side of the work support base, and further , the folded and extended formations are sequentially repeated a plurality of times while the plate surface is held in a horizontal plane, and finally the plate while maintaining the surface in the horizontal plane, and the pressing Ashigu the other end to extend toward the workpiece support of the upper surface,
It is attached and fixed to the final extension end of the presser foot, and as the moving member moves up and down, the presser foot is elastically deformed, and the inclination angle thereof is changed between the first soldering member and the second soldering member. Following the inclination angle of the joint surface of the soldering member of the workpiece, a workpiece presser consisting of a plate-like member of a predetermined thickness that presses the workpiece against the upper surface of the workpiece support base,
A heating source that heats the workpiece via the workpiece presser and performs soldering between the first soldering member and the second soldering member ,
The moving members are respectively provided on opposite sides of the work support base,
The presser foot is attached to each moving member,
The work presser is supported in a double-sided structure by the presser foot at both sides.
A soldering apparatus characterized by that. A workpiece support base for supporting the first soldering member and the second soldering member, which are workpieces, on the upper surface in a state of being overlaid;
A moving member provided so that the upper surface is movable up and down along the side of the work support base within a range of a position higher than the upper surface of the work support base;
A first leaf spring portion whose one end is attached and fixed to the upper surface of the moving member and the other end extends to the upper surface side of the work support;
One end is connected to the extending end of the first leaf spring portion in a direction orthogonal to the extending direction while the plate surface is held in the horizontal plane, and the plate surface is bent while holding the horizontal plane. In parallel with the first plate spring portion, the second plate spring portion whose plate surface is held in a horizontal plane and the other end portion extends to the upper surface side of the moving member,
One end is connected to the extending end of the second leaf spring portion in a direction orthogonal to the extending direction while the plate surface is held in the horizontal plane, and the plate surface is bent while holding the horizontal plane. A third leaf spring portion parallel to the second leaf spring portion, the plate surface is held in a horizontal plane, and the other end portion extends to the upper surface side of the work support base,
A presser foot consisting of
The presser leg is attached and fixed to the extension end of the third leaf spring part. As the moving member moves up and down, the presser leg is elastically deformed, and the inclination angle is set to the first leg. A workpiece presser made of a plate-like member having a predetermined thickness that follows the inclination angle of the joint surface between the soldering member and the second soldering member and presses the workpiece against the upper surface of the workpiece support base;
A heating source that heats the workpiece via the workpiece presser and performs soldering between the first soldering member and the second soldering member ,
A total of two sets of the moving members are provided, one on each side of the workpiece support.
A total of four sets of the presser legs are attached to each of the moving members in parallel with each other.
The work presser is supported by two sets of the presser legs on opposite sides.
A soldering apparatus characterized by that. The work presser includes a slit hole,
The heating source is a light beam source that irradiates a work with radiation light through the slit hole.
Soldering device according to any one of claims 1 and 2, characterized in that. The presser foot is made of an electrical insulating material, and the work presser is made of an electric resistor that generates heat when energized. The work presser also serves as the heating source.
They claim 1, wherein the soldering apparatus according to claim 3. Using the soldering apparatus of any one the claims 1 to claim 4, wherein the through work holding pressing the workpiece on the upper surface of the workpiece support, with the heating source, the first soldering A soldering method, comprising: heating a member and a second soldering member to perform soldering between the first soldering member and the second soldering member.

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