JP2018181818A - Fusion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fusion device capable of accurately and reliably detecting the position of a magnetic body to be fused to a sheet made of a resin material and capable of using the detection result for a fusion to be performed later.SOLUTION: A fusion device 100 includes: a fusion unit (fusing part) 8 to perform a fusion between a waterproof sheet and a hard disk 9; and a magnet body detection unit 3 to detect, prior to the fusion, the position of the hard disk 9 while the hard disk 9 is covered with the waterproof sheet. The fusing unit 8 is divided into a first region 221A-a ninth region 221i and the fusion can be performed for each region. At least one region is selected among the first region 221A-the ninth region 221i in accordance with the position of the hard disk 9 detected by the magnet body detection unit 3, and the fusion is performed in the selected region.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fusion device.

  In recent years, along with the demand for high durability of buildings, a sheet waterproof structure in which a waterproof sheet (resin sheet) is laid and constructed is adopted on the roofs, verandas, etc. of many buildings.

  In this sheet waterproofing structure, for example, at least a part of the floor portion is covered with a waterproof sheet, but the fixing of the waterproof sheet to the floor portion (housing) is a plurality of disk-shaped fixed disks (steel plates) Are fixed to the floor at predetermined intervals using fixing screws or the like, and the upper surface of the fixed disk and the lower surface of the waterproof sheet are joined to these fixed disks, so that the floor and the fixed disk are interposed. It is implemented by joining a waterproof sheet. As a result, the housing is waterproofed against rainwater and the like, and the waterproof sheet is fixed to the housing without being pulled away from the wind or the like.

  Further, the fixed disc and the waterproof sheet are joined by fusion, and an induction heating device can be used for the fusion (see, for example, Patent Document 1). When joining the fixed disc and the waterproof sheet, the fixed disc is covered by the waterproof sheet, so that its position can not be visually recognized. Therefore, in the device described in Patent Document 1, a coil that can be energized via a sine wave oscillation circuit is used as a detection unit that detects the position of the fixed disk. When the coil in the energized state is moved closer to or away from the fixed disk, the inductance of the coil changes in accordance with the distance. The position of the fixed disk can be detected according to the amount of change.

  However, in the device described in Patent Document 1, heat loss due to high frequency may cause problems in operation of the sine wave oscillation circuit, that is, the oscillation state can not be maintained, and as a result, the oscillation is attenuated. Or may stop. In this case, detection of the position of the fixed disk becomes impossible.

JP, 2016-66422, A

  The object of the present invention is to detect the position of the magnetic material to be fused to a sheet made of a resin material accurately and reliably with a simple configuration, and to use the detection result for the later fusion. It is an object of the present invention to provide a fusion device that can

Such an object is achieved by the present invention of the following (1) to (10).
(1) A fused part for fusing a sheet made of a resin material and a magnetic material coated with a resin material;
And a magnetic body detection unit that detects the position of the magnetic body in a state in which the magnetic body is covered with the sheet prior to the fusion bonding.
The fusion spliced portion is divided into a plurality of regions, and the fusion can be performed for each of the regions.
At least one region is selected from the plurality of regions according to the position of the magnetic material detected by the magnetic material detection unit, and the fusion is performed in the selected region. Fusion device.

  (2) The fusion spliced part has a contact surface to be in contact with the sheet in a state of covering the magnetic body, and includes a housing for housing the magnetic body detection unit, and the contact surface is the plurality of regions The fusion device according to the above (1), which is divided into

  (3) The fusion apparatus according to the above (1) or (2), wherein the fusion spliced portion is configured to be capable of adjusting the degree of fusion in each of the regions.

(4) The magnetic body detection unit includes at least one Hall element that generates a voltage due to a Hall effect.
A magnet disposed on the opposite side of the sheet of the Hall element;
The fusion device according to any one of (1) to (3), further including: a voltage detection unit that detects the voltage according to the distance between the magnet and the magnetic body in a state in which the Hall element is energized.

  (5) The fusion device according to (4), wherein at least one of the Hall elements is disposed in each of the regions.

  (6) The magnetic body detection unit described in the above (4) or (5), which has a signal amplification unit that amplifies a difference between the voltage detected by the voltage detection unit and a preset reference value. Fusion device.

(7) A determination unit is provided that determines the presence or absence of the magnetic body based on the detection result of the voltage detection unit,
(4) to (6), wherein the determination unit determines that the magnetic body is present when a difference between the voltage detected by the voltage detection unit and a reference value set in advance is equal to or greater than a threshold value. The fusion apparatus according to any one of the above.

  (8) The fusion apparatus according to any one of the above (4) to (7), wherein the magnet is a permanent magnet.

  (9) The fusion apparatus according to any one of (4) to (8), wherein the Hall element and the magnet are separated.

  (10) The fusion device according to the above (9), wherein the magnetic substance detection unit is interposed between the Hall element and the magnet and has a spacer made of a nonmagnetic substance.

  According to the present invention, the position of the magnetic material fused to the sheet made of the resin material can be accurately and reliably detected with a simple configuration, and the detection result is used for the later fusing. it can.

FIG. 1 is a side view showing a state of use (an example) of the fusion device of the present invention. FIG. 2 is a side view showing the usage state (one example) of the fusion device of the present invention. FIG. 3 is a side view showing the usage state (one example) of the fusion bonding apparatus of the present invention. FIG. 4 is a view seen from the direction of arrow A in FIG. FIG. 5 is a view seen from the direction of arrow B in FIG. 6 is a view seen from the direction of arrow C in FIG. FIG. 7 is a view seen from the direction of arrow D in FIG. FIG. 8 is a view seen from the direction of arrow D in FIG. FIG. 9 is a view seen from the direction of arrow E in FIG. FIG. 10 is a view seen from the direction of arrow F in FIG. FIG. 11 is a vertical sectional view of a region [G] surrounded by an alternate long and short dash line in FIG. FIG. 12 is a block diagram of the main part of the fusion device of the present invention. FIG. 13 is a flow chart sequentially showing a control program of a control unit provided in the fusion bonding apparatus of the present invention. FIG. 14 is a flow chart sequentially showing a control program of a control unit included in the fusion bonding apparatus of the present invention. FIG. 15 is a flow chart sequentially showing a control program of a control unit included in the fusion bonding apparatus of the present invention.

Hereinafter, the fusion device of the present invention will be described in detail on the basis of a preferred embodiment shown in the attached drawings.
1 to 3 are side views showing the use state (one example) of the fusion device of the present invention. FIG. 4 is a view seen from the direction of arrow A in FIG. FIG. 5 is a view seen from the direction of arrow B in FIG. 6 is a view seen from the direction of arrow C in FIG. 7 and 8 are each a view as seen from the direction of arrow D in FIG. FIG. 9 is a view seen from the direction of arrow E in FIG.
FIG. 10 is a view seen from the direction of arrow F in FIG. FIG. 11 is a vertical sectional view of a region [G] surrounded by an alternate long and short dash line in FIG. FIG. 12 is a block diagram of the main part of the fusion device of the present invention. 13 to 15 are flowcharts sequentially illustrating control programs of a control unit provided in the fusion device of the present invention. In the following, for convenience of explanation, (the upper side in FIGS. 1 to 3 and FIG. 11 is referred to as “upper (or upper)”, and the lower side is referred to as “lower (or lower)”.

  As shown in FIGS. 1 to 3, the floor portion 101 of the casing 1000 is waterproofed by the sheet waterproofing structure 10. The sheet waterproofing structure 10 has a waterproof sheet (sheet) 11 and a plurality of fixed disks 9.

  The waterproof sheet 11 covers a portion of the floor portion 101 requiring waterproofing. The waterproof sheet 11 is made of a resin material, and the resin material is not particularly limited, and examples thereof include a vinyl chloride resin such as polyvinyl chloride, a polyolefin resin, an ethylene vinyl acetate copolymer, etc. One or two or more of these can be used in combination. Among these, vinyl chloride resins are preferable. Thereby, the solvent welding property and heat sealing property of the waterproof sheet 11 can be made excellent. The vinyl chloride resin is not particularly limited as long as it is a polymer containing vinyl chloride, that is, an oligomer, a prepolymer and a polymer, for example, a vinyl chloride monomer, or vinyl chloride, vinyl acetate, ethylene And copolymers with propylene and the like, and mixtures of two or more of these polymers.

  The thickness of the waterproof sheet 11 is preferably 0.5 mm or more and 4.0 mm or less, and more preferably 1.0 mm or more and 2.5 mm or less.

  The fixed disc 9 fixes the waterproof sheet 11 to the floor portion 101. The fixed disc 9 is spaced on the floor 101. Each fixed disk 9 is composed of a disk member 91 having a disk shape and a resin layer 92 covering the upper surface of the disk member 91.

  The disk member 91 is made of a magnetic material (ferromagnetic material), and the material is not particularly limited. For example, any one of metals such as iron, cobalt, nickel, gadolinium, chromium, or the like An alloy containing one or more kinds can be used.

  Further, an insertion hole 911 through which the screw 12 is inserted is formed in the center of the disc member 91. The fixed disc 9 is fixed to the floor portion 101 via the screw 12 inserted through the insertion hole 911.

  The diameter of the disk member 91 is not particularly limited, but is preferably about 20 mm or more and 150 mm or less, and more preferably about 40 mm or more and 100 mm or less. The thickness of the disk member 91 is not particularly limited, but is preferably about 0.1 mm or more and 3 mm or less, and more preferably about 0.3 mm or more and 1.5 mm or less.

  The resin layer 92 is a coat layer that covers the upper surface of the disk member 91. Examples of the resin constituting the resin layer 92 include vinyl chloride resins such as polyvinyl chloride, polyolefin resins, ethylene vinyl acetate copolymers, acrylic resins, thermoplastic resins such as ABS, etc. One or more of them may be used in combination, preferably polyvinyl chloride. Thereby, when the resin layer 92 and the waterproof sheet 11 are fused, the mutual adhesion can be improved. And the waterproof sheet 11 is fixed with respect to the floor part 101 by this melt | fusion. In addition, when polyvinyl chloride is used as the resin constituting the resin layer 92, the polyvinyl chloride is excellent in solvent weldability and thermal fusion bondability, so that the above effects can be more remarkably exhibited. Corrosion of the fixed disc 9 can be prevented more reliably.

  The thickness of the resin layer 92 is not particularly limited, but is preferably 0.03 mm or more, and more preferably 0.05 mm or more and 0.3 mm or less. As a result, even if stress is applied to the resin layer 92 due to the waterproof sheet 11 being blown by wind, generation of cracks or breakage in the resin layer 92 can be accurately suppressed.

  As shown in FIGS. 1 to 3, the fusion bonding apparatus 100 is an apparatus for fusing the waterproof sheet 11 and the fixed disc 9 (magnetic material). The fusion device 100 includes (includes) a detection unit 1.

  By the way, the waterproof sheet 11 has no transparency and is opaque. The worker (installer) visually recognizes the position of the fixing disc 9 because the fixing disc 9 is covered with the opaque waterproof sheet 11 and the fusion work is performed when the waterproof sheet 11 and the fixing disc 9 are fused. Can not do it.

  Therefore, the detection unit 1 of the fusion bonding apparatus 100 is an apparatus used to detect the position of the fixed disc 9 prior to fusing the waterproof sheet 11 and the fixed disc 9. The fusion device 100 can fuse the waterproof sheet 11 and the stationary disk 9 after the detection of the stationary disk 9 by the detection unit 1. As a result, the floor portion 101 is waterproofed by the sheet waterproofing structure 10.

  For example, when the positional relationship between the fusion bonding apparatus 100 and the fixed disc 9 through the waterproof sheet 11 is as shown in FIG. 1 or 2, the entire upper surface 921 of the resin layer 92 of the fixed disc 9 and its surface The contact surface 111 of the waterproof sheet 11 in contact can be sufficiently heated by induction heating described later. Thereby, the waterproof sheet 11 and the fixed disc 9 can be fused without excess and deficiency.

  On the other hand, when the positional relationship between the fusion bonding apparatus 100 and the fixed disc 9 through the waterproof sheet 11 is as shown in FIG. 3, the entire upper surface 921 of the resin layer 92 of the fixed disc 9 is heated by induction heating. As a result, the fusion between the waterproof sheet 11 and the fixed disc 9 becomes insufficient.

  As shown in FIG. 1, the fusion device 100 includes a fusion unit (fusion part) 8 and a detection unit 1. The fusion unit 8 has a housing 2 and a magnetic field generator 7. The detection unit 1 includes a magnetic body detection unit 3, a light emitting unit 4, and a power supply 6. The configuration of each part will be described below.

  The housing 2 has, for example, a cylindrical shape, and accommodates, for example, the magnetic body detection unit 3 and the power supply 6 inside thereof. The housing 2 includes a top plate 21 disposed on the upper side, a bottom plate 22 disposed on the lower side, and a side wall plate 23 connecting the top plate 21 and the bottom plate 22.

  As shown in FIGS. 1 to 3, a handle (grip portion) 24 gripped when using the fusion device 100 (detection unit 1) is fixed to the top plate 21. The handle 24 has an arch shape, and both ends thereof are fixed to the top 21 by, for example, screwing. Moreover, as shown in FIGS. 7-10, the handle 24 is arrange | positioned so that the center of the circular top plate 21 may be passed. Thereby, the handle 24 can be gripped and the fusion device 100 can be used stably.

  The bottom plate 22 is an abutment surface 221 whose lower surface abuts on the waterproof sheet 11 in a state of covering the fixed disc 9 (magnetic material). The diameter of the contact surface 221 (bottom plate 22) is preferably large enough to include the fixed disc 9 in plan view. Then, as shown in FIGS. 4 to 6, the contact surface 221 is divided into a plurality of (nine in the illustrated configuration) regions. In the configuration shown in FIGS. 4 to 6, the contact surface 221 is, for example, a circular “first region (first fusion region) 221 A” in the central portion and the contact surface so as to surround it. A fan-shaped “second region (second fusion region) 221 B”, “third region (third fusion region) 221 C”, and “third region (third fusion region) 221 C” arranged at regular intervals along the edge of 221 Four regions (fourth fusion region) 221D "," fifth region (fifth fusion region) 221E "," sixth region (sixth fusion region) 221F ", and" seventh region (seventh region (seventh fusion region) 221F) " It is divided into a fused region) 221G, an "eighth region (eighth fused region) 221H", and a "ninth region (ninth fused region) 221i".

  The constituent materials of the top plate 21, the bottom plate 22 and the side wall plate 23 are not particularly limited. For example, various thermoplastic resins such as nylon and polycarbonate, various thermosetting resins such as epoxy resin, and metals are used. be able to. The thickness of the top plate 21, the bottom plate 22 and the side wall plate 23 may be the same or different.

  The material of the handle 24 is not particularly limited. For example, various metal materials such as aluminum and stainless steel and other various resin materials can be used.

  The magnetic field generation unit 7 inductively heats the disk member 91 of the fixed disk 9. By this heating, at least the resin layer 92 (preferably both of the resin layer 92 and the waterproof sheet 11) of the fixed disk 9 is melted to form the resin layer 92 and the waterproof sheet 11 in contact with the resin layer 92. A part can be fused. As shown in FIG. 12, the magnetic field generation unit 7 includes a heating coil 71 and an induction heating oscillation circuit 72.

  The heating coil 71 is disposed in the housing 2 and fixed as close to the bottom plate 22 as possible. Further, as shown in FIGS. 4 to 6, one heating coil 71 is disposed at the central portion of the first area 221A to the ninth area 221i. The heating coil 71 disposed in the first region 221A is a main coil mainly responsible for fusion, and the remaining heating coils 71 are auxiliary coils for assisting fusion by the main coil.

  The heating coil 71 is formed by winding the linear body 711 in, for example, a spiral shape (coil shape), but the shape is not particularly limited. For example, it may be elliptical, triangular or the like. It does not specifically limit as a constituent material of the linear body 711, For example, a litz wire etc. can be used. The litz wire is a thin enameled wire twisted, has high frequency characteristics, reduces AC resistance, and can suppress excessive temperature rise of the heating coil.

  Furthermore, the diameter of the outer peripheral portion of the entire heating coil 71 (the first region 221A to the ninth region 221i) is not limited, but is preferably twice or more the diameter of the fixing disk 9 to be fused.

  The induction heating oscillation circuit 72 is electrically connected to the heating coil 71. The induction heating oscillation circuit 72 is, for example, a high frequency inverter, and can apply a high frequency to the heating coil 71. The heating coil 71 to which the high frequency is applied can inductively heat (high frequency heating) the disk member 91 of the fixed disk 9. Thereby, as described above, the fixed disc 9 and the waterproof sheet 11 can be fused. The induction heating time is not particularly limited, and for example, is preferably 3 seconds or more and 20 seconds or less, and more preferably 5 seconds or more and 10 seconds or less.

  Further, the induction heating oscillation circuit 72 can individually apply a high frequency to the heating coil 71 disposed in the first area 221A to the ninth area 221i. Thereby, the fusion can be performed independently for each area.

  Further, the induction heating oscillation circuit 72 can adjust the time for applying a high frequency to each heating coil 71. Thus, for example, the degree of fusion in each area can be appropriately adjusted according to various conditions such as the thickness of the waterproof sheet 11 and the environment in which the waterproof sheet 11 is used. It becomes a suitable state.

  The power source 6 is configured of, for example, a rechargeable secondary battery. As shown in FIG. 12, the power supply 6 is electrically connected to the control unit 34 of the magnetic substance detection unit 3, the induction heating oscillation circuit 72 of the magnetic field generation unit 7, and the like. As a result, power can be supplied to the control unit 34 and the induction heating oscillation circuit 72.

  The magnetic body detection unit 3 detects the position of the fixed disc 9 in a state where the fixed disc 9 is covered with the waterproof sheet 11 prior to the fusion of the fixed disc 9 (magnetic body) and the waterproof sheet 11. . As shown in FIG. 11, the magnetic substance detection unit 3 has a Hall element 31, a magnet 32 and a spacer 33. Further, as shown in FIG. 12, the magnetic substance detection unit 3 has a control unit 34 and a signal amplification unit 35.

In the magnetic body detection unit 3, the Hall element 31, the magnet 32, and the spacer 33 form an assembly (assembly) to configure one unit, and in the present embodiment, nine units are disposed. As shown in FIGS. 4 to 6, each unit is disposed in the first area 221A as “first detection unit 30A”, and is disposed in the second area 221B as “second detection unit 30B”.
The third detection unit 30C is disposed in the third area 221C, the fourth detection unit 30D is disposed in the fourth area 221D, and the fifth detection unit 30E is disposed in the fifth area 221E. 6 detection unit 30F "is disposed in the fifth area 221E,
It is arranged in the seventh area 221G as "the seventh detection unit 30G", arranged in the eighth area 221H as the "eighth detection unit 30H", and the ninth area (the ninth fusion area) as the "ninth detection unit 30i" It is located at 221i. Each unit is preferably disposed at the center (inner side) of the heating coil 71 in each area. The first detection unit 30A to the ninth detection unit 30i have the same configuration except that the arrangement location is different, and therefore, the second detection unit 30B will be representatively described below.

  As described above, the ninth detection unit 30i includes one Hall element 31, one magnet 32, and one spacer 33.

  As shown in FIG. 12, the Hall element 31 is electrically connected to the power supply 6 through the control unit 34. As a result, power can be supplied to the Hall element 31, that is, a voltage can be applied to conduct electricity.

  As shown in FIG. 11, the Hall element 31 has a block shape, for example, and is fixed to the bottom plate 22 of the housing 2. A magnet 32 is disposed on the opposite side to the waterproof sheet 11 of the Hall element 31, that is, on the upper side. Thus, the Hall element 31 receives a magnetic field from the magnet 32. When the Hall element 31 is energized, a potential difference (hole voltage) is generated inside the Hall element 31 in the direction orthogonal to the magnetic field direction and the current direction in both directions. The potential difference is detected by the control unit 34 (voltage detection unit).

  The constituent material of the Hall element 31 is not particularly limited, and, for example, InSb (indium antimony), GaAs (gallium arsenide) or the like can be used.

  The shape of the Hall element 31 in plan view is not particularly limited. For example, it is preferable to use a square such as a square or a rectangle, or a rounded shape such as a circle or an ellipse. For example, when the shape of the Hall element 31 in a plan view is a square, the size of one side is preferably 2 mm or more and 6 mm or less, and more preferably 3 mm or more and 5 mm or less.

  In addition, it is preferable to use a permanent magnet as the magnet 32. This makes it possible to generate a magnetic field with a simpler configuration than, for example, an electromagnet that generates a magnetic field by power supply. Then, the Hall element 31 can receive the magnetic field quickly.

  The magnetic flux density of the magnet 32 is not particularly limited, and for example, it is preferably 3000 G or more and 6000 G or less, and more preferably 4500 G or more and 5500 G or less.

  The shape of the magnet 32 is not particularly limited. For example, a cylindrical shape or a plate shape is preferable. In the case of a cylindrical shape, the diameter is preferably φ3 mm or more and φ6 mm or less, and more preferably φ3 mm or more and φ4 mm or less. The length is preferably 5 mm or more and 15 mm or less, and more preferably 10 mm or more and 12 mm or less.

  Although the arrangement of the magnet 32 depends on the direction of the current in the hall element 31 at the time of energization, it is preferable to arrange the magnet 32 so that, for example, the N pole is on the upper side and the S pole is on the lower side.

  As shown in FIG. 11, the Hall element 31 and the magnet 32 are separated. A spacer 33 made of a nonmagnetic material is interposed between the Hall element 31 and the magnet 32. The spacer 33 has a block shape, and supports the magnet 32 on the Hall element 31. The strength of the magnetic field that the Hall element 31 receives from the magnet 32 can be adjusted by such a spacer 33. For example, when the magnetic flux density of the magnet 32 is 4500 G, the distance between the Hall element 31 and the magnet 32 by the spacer 33 is preferably 2 mm or more and 5 mm or less, and more preferably 3 mm or more and 4 mm or less.

  The spacer 33 is made of a nonmagnetic material, and the material thereof is not particularly limited, and, for example, the thermoplastic resin described above can be used.

  The control unit 34 has, for example, a microprocessor. For example, various programs are stored in the control unit 34, and processing based on the programs can be performed. The program includes, for example, a program for detecting the fixed disk 9 and thereafter fusing the fixed disk 9 and the waterproof sheet 11.

  As described above, when the Hall element 31 is energized, a potential difference due to the Hall effect is generated inside the Hall element 31. Since the magnetic field changes in accordance with the distance (shortest distance) between the magnet 32 and the disk member 91 (magnetic material) of the fixed disk 9, as a result, the potential difference also changes. The shorter the distance, the larger the potential difference, and the longer the distance, the smaller the potential difference.

For example, in the state shown in FIG. 1, as shown in FIG. 4, the contact surface 221 includes the fixed disk 9 in plan view, that is, the fixed disk 9 is substantially concentrically inside the contact surface 221. positioned. The positional relationship between the fusion bonding apparatus 100 and the fixed disk 9 is a positional relationship suitable for the fusion of the fixed disk 9 and the waterproof sheet 11. In this case, the distance _{d 30A} of the Hall element 31 and the disk member 91 of the first detection unit 30A, and the distance _{d 30B} of the Hall element 31 and the disk member 91 of the second detection unit 30B, holes in the third detection unit 30C and the distance _{d 30c} of the element 31 and the disk member 91, the distance of the distance _{d 30D} of the Hall element 31 and the disk member 91 of the fourth detection unit 30D, the Hall element 31 and the disk member 91 of the fifth detection unit 30E d It is almost the same as _30E . In this case, the heating coils 71 of the first area 211A to the ninth area 211i are used for fusion bonding.

Further, in the state shown in FIG. 2, as shown in FIG. 5, although the fixed disk 9 is eccentric to the right side in FIG. 5 with respect to the contact surface 221 in plan view, the contact surface 221 is a fixed disk 9 is included. The positional relationship between the fusion device 100 and the fixed disk 9 is also suitable for the fusion between the fixed disk 9 and the waterproof sheet 11. At this time, the distance d _{30 A} , the distance d _{30 c} , the distance d _{30 D} , and the distance d _{30 E} are substantially the same, but the distance d _30B, the distance _{d 30A,} the distance _{d 30c,} the distance _{d 30D,} is longer than the distance _{d 30E} (see FIG. 2). In this case, the heating coil 71 of the first area 211A and the heating coils 71 of the third area 211C to the eighth area 211H are used for fusion bonding.

Further, in the state shown in FIG. 3, as shown in FIG. 6, the fixed disk 9 is greatly decentered on the left side in FIG. 6 with respect to the contact surface 221 in plan view. There is almost no overlap with the 1 area 221A. Such positional relationship between the fusion bonding apparatus 100 and the fixed disk 9 is treated as not being in a positional relationship suitable for fusion bonding of the fixed disk 9 and the waterproof sheet 11. The distance _{d 30A,} the distance _{d 30c,} the distance _{d 30D,} the distance _{d 30E} is longer than both the distance _{d 30B} (see FIG. 3).

  Further, detection of the potential difference in each Hall element 31 is performed by the control unit 34. As described above, the control unit 34 detects a voltage (potential difference) according to the distance (shortest distance) between the magnet 32 and the disk member 91 (magnetic material) of the fixed disk 9 in a state in which the Hall element 31 is energized. Act as a department.

  Based on the detection result by the voltage detection unit, it can be determined whether there is a fixed disk 9 (magnetic material) sufficiently overlapping (to the extent that induction heating should be performed) in each area (presence or absence of the fixed disk 9). . This determination is also made by the control unit 34. Thus, the control unit 34 also functions as a determination unit that makes the determination.

Determination of the presence or absence of the fixed disk 9, a potential difference E _n detected by the voltage detection unit, when the difference ΔE between the reference value E ₀ which is set in advance is less than the threshold value alpha, fixed disk 9 (magnetic body) is I judge that there is. The suffix “n” of the potential difference E _n is an integer of 1 to 9, and in the case of n = 1, it represents the potential difference E ₁ generated in the Hall element 31 of the first detection unit 30A, and in the case of n = 2 Represents the potential difference E ₂ generated by the Hall element 31 of the second detection unit 30 B, and in the case of n = ₃ , represents the potential difference E ₃ generated in the Hall element 31 of the third detection unit 30 C; 4 represents the potential difference E ₄ generated in the Hall element 31 of the detection unit 30 D, and in the case of n = ₅ , represents the potential difference E ₅ generated in the Hall element 31 of the fifth detection unit 30 E; in the case of n = 6, the sixth detection It represents a potential difference _{E 6} generated in the Hall element 31 of the unit 30F, the case of n = 7, represents a potential difference _{E 7} generated by the Hall element 31 of the seventh detection unit 30G, the case of n = 8, 8 detection unit 30H Occurred in the Hall element 31 of It represents position difference _{E 8,} the case of n = 9, representing the potential difference _{E 9} generated in the Hall element 31 of the ninth detection unit 30i. The reference value E ₀ is a state where the detection unit 1 is sufficiently spaced from the fixed disc 9, a potential difference generated inside of the Hall element 31 is a value, for example determined experimentally. The threshold value α is a value set in advance, for example, an experimentally obtained value.

Then, if the difference ΔE between the potential difference E ₁ and the reference value E ₀ is equal to or greater than the threshold value alpha, fusible 4 (FIG. 1) and 5 can be regarded as a state shown in (Fig. 2). In the state shown in FIG. 4, the heating coil 71 in the first region 221A in which the potential difference E ₁ is equal to or greater than the threshold value alpha, belongs Hall element 31 a potential difference E _n occurs with a potential difference E ₁ in the same manner as in the threshold value alpha or Fusion is performed by the heating coil 71 of the area (the second area 221B to the ninth area 221i). In the state shown in FIG. 5, the heating coil 71 in the first region 221A in which the potential difference E ₁ is equal to or greater than the threshold value alpha, belongs Hall element 31 a potential difference E _n occurs with a potential difference E ₁ in the same manner as in the threshold value alpha or Fusion bonding is performed by the heating coil 71 of the area (the third area 221C to the eighth area 221H).

In contrast, in some cases the difference ΔE between the potential difference E ₁ and the reference value E ₀ is less than the threshold alpha. In this case, it can be regarded as the state shown in FIG. 6 (FIG. 3) where fusion is not recommended. In this state, even if the fixed disc 9 and the waterproof sheet 11 are fused, the fused area is not sufficiently secured to the extent that the waterproofing by the sheet waterproofing structure 10 can be secured.

  The detection unit 1 configured as described above has a simple configuration in which the position of the fixed disk 9 fused to the waterproof sheet 11 made of a resin material is detected by detecting the potential difference generated inside each Hall element 31. Can be detected accurately and reliably. Then, when the waterproof sheet 11 and the fixed disc 9 are fused, it is possible to determine whether or not the fusion is possible using this detection result. Further, in the case of fusing, it is selected in which region the fusing is to be performed.

As shown in FIG. 12, the Hall element 31 is electrically connected to the control unit 34 also via the signal amplification unit 35. The signal amplification unit 35 is a circuit that amplifies the difference ΔE between each of the potential differences E ₁ to E ₉ and the reference value E ₀ . This makes it possible to accurately determine whether each difference ΔE is equal to or greater than the threshold value α.

  The configuration of the signal amplification unit 35 is not particularly limited, and can be, for example, a configuration having a transistor.

  In addition, it is preferable that one portion (detection circuit) functioning as a voltage detection unit of the control unit 34 be disposed for each Hall element 31. Thereby, detection of the potential difference with respect to each Hall element 31 can be performed quickly, and accordingly, the potential difference detection processing time can be shortened as the whole detection unit 1.

  As shown in FIGS. 7 to 10, the top plate 21 is provided. The light emitting unit 4 includes a first light emitting unit 4A, a second light emitting unit 4B, a third light emitting unit 4C, a fourth light emitting unit 4D, a fifth light emitting unit 4E, a sixth light emitting unit 4F, and a fourth light emitting unit 4F. A seventh light emitting unit 4G, an eighth light emitting unit 4H, and a ninth light emitting unit 4i are included. Each of the first light emitting unit 4A to the ninth light emitting unit 4i is configured of, for example, an LED.

The first light emitting portion 4A is provided corresponding to the first detection unit 30A (Hall element 31), in accordance with the magnitude of the potential difference _{E 1} generated by the Hall element 31 of the first detection unit 30A, i.e., the potential difference _{E 1} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The first light emitting unit 4A is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

The second light emitting section 4B is provided corresponding to the second detection unit 30B (Hall element 31), in accordance with the magnitude of the potential difference _{E 2} generated by the Hall element 31 of the second detection unit 30B, that is, the potential difference _{E 2} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The second light emitting unit 4B is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

The third light emitting portion 4C is provided corresponding to the third detection unit 30C (Hall element 31), in accordance with the magnitude of the potential difference _{E 3} generated in the Hall element 31 of the third detection unit 30C, i.e., the potential difference _{E 3} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The third light emitting unit 4C is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

The fourth light emitting portion 4D is provided corresponding to the fourth detection unit 30D (Hall element 31), in accordance with the magnitude of the potential difference _{E 4} generated by the Hall element 31 of the fourth detection unit 30D, i.e., the potential difference _{E 4} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The fourth light emitting unit 4D is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

The fifth light emitting portion 4E is provided corresponding to the fifth detection unit 30E (Hall element 31), in accordance with the magnitude of the potential difference _{E 5} generated in the Hall element 31 of the fifth detection unit 30E, i.e., the potential difference _{E 5} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The fifth light emitting unit 4E is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

The sixth light emitting unit 4F is provided corresponding to the sixth detection unit 30F (Hall element 31), in accordance with the magnitude of the potential difference _{E 6} generated in the Hall element 31 of the sixth detection unit 30F, i.e., the potential difference _{E 6} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The sixth light emitting unit 4F is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

The seventh light emitting portion 4G, provided corresponding to the seventh detection unit 30G (Hall element 31), in accordance with the magnitude of the potential difference _{E 7} generated by the Hall element 31 of the seventh detection unit 30G, i.e., the potential difference _{E 7} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The seventh light emitting unit 4G is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

Eighth light-emitting unit 4H is provided corresponding to the eighth detection unit 30H (Hall element 31), in accordance with the magnitude of the potential difference _{E 8} generated by the Hall element 31 of the eighth detection unit 30H, i.e., the potential difference _{E 8} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The eighth light emitting unit 4H is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

Ninth light emitting portion 4i is provided corresponding to the ninth detection unit 30i (Hall element 31), in accordance with the magnitude of the potential difference _{E 9} generated in the Hall element 31 of the ninth detection unit 30i, i.e., the potential difference _{E 9} It lights and extinguishes according to judgment whether difference deltaE with and reference value E ₀ is more than threshold alpha. The ninth light emitting unit 4i is turned on if the difference ΔE is equal to or more than the threshold value α, and is turned off otherwise.

  For example, when the detection unit 1 is in the state shown in FIG. 1, the first light emitting unit 4A to the ninth light emitting unit 4i are in the state shown in FIG. 7, ie from the all off state to the state shown in FIG. It becomes a state. The worker who visually recognizes this state can judge that the fusion is possible. Then, the worker can shift to the fusion work as it is.

  When the detection unit 1 is in the state shown in FIG. 2, the first light emitting unit 4A and the fourth light emitting unit 4D to the seventh light emitting unit 4G are turned on, but the other light emitting units are turned off. It will remain. The worker who visually recognizes this state can judge that the fusion work is possible. Then, the worker can shift to the fusion work as it is.

  When the detection unit 1 is in the state shown in FIG. 3, the second light emitting unit 4B, the eighth light emitting unit 4H, and the ninth light emitting unit 4i are turned on, but the other light emitting units are turned off. It will stay. In this case, it is preferable to move the fusion device 100 from the state shown in FIG. 3 to the left side in the drawing so as to be in the state shown in FIG. 1 or FIG. Thus, the lighting state of the light emitting unit 4 is as shown in FIG. 8 or 9. Then, the worker who visually recognizes this state can determine that the fusion work is possible, and can shift to the fusion work.

  Further, as shown in FIGS. 7 to 10, the top plate 21 is provided with a switch 5. The switch 5 is a start switch that activates the magnetic field generation unit 7 to start fusion. The switch 5 can be set to "ON" when at least the first light emitting unit 4A is turned on, that is, when the state shown in FIG. 8 or 9 is reached.

  Next, a control program from the detection of the position of the fixed disc 9 to the fusion of the fixed disc 9 and the waterproof sheet 11 will be described based on the flowcharts shown in FIGS.

Detecting the potential difference _{E 1} generated by the Hall element 31 of the first detection unit 30A (step S1). Then, by calculating the difference ΔE between the potential difference E ₁ and the reference value E ₀ (step S2), the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S3). If it is determined in step S3 that the difference ΔE is equal to or greater than the threshold value α, the first light emitting unit 4A is caused to emit light (step S4). If it is determined in step S3 that the difference ΔE is not greater than or equal to the threshold value α, the process returns to step S1, and thereafter lower-order steps are sequentially executed. Then, the operator can repeat the position adjustment of fusion device 100 until it is determined that difference ΔE is equal to or greater than threshold value α.

Detecting the potential difference _{E 2} generated by the Hall element 31 of the second detection unit 30B (step S5). Then, by calculating the difference ΔE between the potential difference E ₂ and the reference value E ₀ (step S6), and the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S7). If it is determined in step S7 that the difference ΔE is greater than or equal to the threshold value α, the second light emitting unit 4B is caused to emit light (step S8). If it is determined in step S7 that the difference ΔE is not greater than or equal to the threshold value α, step S8 is skipped (omitted) to sequentially execute the lower steps.

Detecting the potential difference _{E 3} generated in the Hall element 31 of the third detection unit 30C (step S9). Then, by calculating the difference ΔE between the potential difference _{E 3} and the reference value _{E 0} (step S10), and the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S11). If it is determined in step S11 that the difference ΔE is greater than or equal to the threshold value α, the third light emitting unit 4C is caused to emit light (step S12). If it is determined in step S11 that the difference ΔE is not greater than or equal to the threshold value α, step S12 is skipped (omitted) to sequentially execute the lower steps.

It detects a potential difference _{E 4} caused by the Hall element 31 of the fourth detection unit 30D (step S13). Then, by calculating the difference ΔE between the potential difference _{E 4} and the reference value _{E 0} (step S14), and the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S15). If it is determined in step S15 that the difference ΔE is greater than or equal to the threshold value α, the fourth light emitting unit 4D is caused to emit light (step S16). If it is determined in step S15 that the difference ΔE is not greater than or equal to the threshold value α, step S16 is skipped (omitted) to sequentially execute the lower steps.

It detects a potential difference _{E 5} generated by the Hall element 31 of the fifth detection unit 30E (step S17). Then, by calculating the difference ΔE between the potential difference _{E 5} and the reference value _{E 0} (step S18), and the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S19). If it is determined in step S19 that the difference ΔE is greater than or equal to the threshold value α, the fifth light emitting unit 4E is caused to emit light (step S20). If it is determined in step S19 that the difference ΔE is not greater than or equal to the threshold value α, step S20 is skipped (omitted) to sequentially execute the lower steps.

It detects a potential difference _{E 6} generated in the Hall element 31 of the sixth detection unit 30F (step S21). Then, by calculating the difference ΔE between the potential difference _{E 6} and the reference value _{E 0} (step S22), and the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S23). If it is determined in step S23 that the difference ΔE is greater than or equal to the threshold value α, the sixth light emitting unit 4F is caused to emit light (step S24). If it is determined in step S23 that the difference ΔE is not greater than or equal to the threshold value α, step S24 is skipped (omitted) to sequentially execute the lower steps.

It detects a potential difference _{E 7} generated by the Hall element 31 of the seventh detection unit 30G (step S25). Then, by calculating the difference ΔE between the potential difference _{E 7} and the reference value _{E 0} (step S26), the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S27). If it is determined in step S27 that the difference ΔE is equal to or greater than the threshold value α, the seventh light emitting unit 4G is caused to emit light (step S28). If it is determined in step S27 that the difference .DELTA.E is not equal to or greater than the threshold value .alpha., Step S28 is skipped (omitted) to sequentially execute lower steps.

It detects a potential difference _{E 8} generated by the Hall element 31 of the eighth detection unit 30H (step S29). Then, by calculating the difference ΔE between the potential difference _{E 8} and the reference value _{E 0} (step S30), the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S31). If it is determined in step S31 that the difference ΔE is greater than or equal to the threshold value α, the eighth light emitting unit 4H is caused to emit light (step S32). If it is determined in step S31 that the difference ΔE is not greater than or equal to the threshold value α, step S32 is skipped (omitted) to sequentially execute the lower steps.

It detects a potential difference _{E 9} generated in the Hall element 31 of the ninth detection unit 30i (step S33). Then, by calculating the difference ΔE between the potential difference _{E 9} and the reference value _{E 0} (step S34), the difference ΔE is equal to or greater than or equal to the threshold value alpha (Step S35). If it is determined in step S35 that the difference ΔE is greater than or equal to the threshold value α, the ninth light emitting unit 4i is caused to emit light (step S36). If it is determined in step S35 that the difference ΔE is not greater than or equal to the threshold value α, step S36 is skipped (omitted) to sequentially execute the lower steps.

  Next, when it is determined that the switch 5 has been operated (step S37), the magnetic field generation unit 7 operates to apply a high frequency to the heating coil 71 by the induction heating oscillation circuit 72 (step S38). The heating coil 71 to which a high frequency is applied is the heating coil 71 in the region to which the Hall element 31 in which the difference ΔE is determined to be equal to or greater than the threshold value α belongs.

  Next, the timer built in the control unit 34 operates (step S39), and when time is up (step S40), the application of the high frequency to the heating coil 71 is stopped (step S41).

  In addition, after stopping the application of high frequency, by pressing the fixed disc 9 from above the waterproof sheet 11 using a pressure bonding jig or the like, it is possible to ensure the fusion between the waterproof sheet 11 and the fixed disc 9.

  As described above, in the fusion bonding apparatus 100, when the waterproof sheet 11 and the fixed disk 9 are fused, the position of the fixed disk 9 with respect to the first area 221A to the ninth area 221i is simply a hole effect. With this configuration, accurate and reliable detection can be performed. Then, according to the detection result, it is selected in which area of the first area 221A to the ninth area 221i the fusion is performed, and the fusion is performed in the selected area.

  Although the fusion bonding apparatus of the present invention has been described above with reference to the illustrated embodiment, the present invention is not limited to this, and each component constituting the fusion bonding apparatus can have any configuration capable of exhibiting the same function. Can be replaced with Also, any component may be added.

  Also, although the contact surface of the housing is divided into nine regions in the above embodiment, the number of divisions is not limited to this and may be, for example, two to eight or ten or more. . Moreover, it does not specifically limit about how to divide an abutting surface according to the division | segmentation number.

  Further, the number of regions used for the fusion is not limited to the number in the above embodiment, and at least one may be used.

  Further, one Hall element of the magnetic body detection unit is disposed in each area in the above embodiment, but the number of Hall elements is not limited to this, and may be, for example, two or more. .

  Moreover, as a magnet of a magnetic body detection part, although it was a permanent magnet in said each embodiment, it is not limited to this, For example, an electromagnet may be sufficient.

100 fusion device 1 detection unit 2 housing 21 top plate 22 bottom plate 221 contact surface 221A first region (first fusion region)
221B second region (second fusion region)
221C third region (third fusion region)
221D fourth region (fourth fusion region)
221E fifth region (fifth fusion region)
221F sixth region (sixth fusion region)
221G seventh area (seventh fusion area)
221H eighth region (eighth fusion region)
221i 9th area (9th fusion area)
23 side wall plate 24 handle (gripping portion)
3 magnetic body detection unit 30A first detection unit 30B second detection unit 30C third detection unit 30D fourth detection unit 30E fifth detection unit 30F sixth detection unit 30G seventh detection unit 30H eighth detection unit 30i ninth detection unit 31 Hall element 32 magnet 33 spacer 34 control unit 35 signal amplification unit 4 light emitting unit 4A first light emitting unit 4B second light emitting unit 4C third light emitting unit 4D fourth light emitting unit 4E fifth light emitting unit 4F sixth light emitting unit 4G seventh Light emitting unit 4H Eighth light emitting unit 4i ninth light emitting unit 5 switch 6 power supply 7 magnetic field generating unit 71 heating coil 711 linear body 72 induction heating oscillation circuit 8 fusion unit (fusion unit)
9 fixed disc 91 disc member 911 insertion hole 92 resin layer 921 top surface 10 sheet waterproof structure 11 waterproof sheet 111 contact surface 12 screw 1000 housing 101 floor part d _30A distance d _30B distance d _30C distance d _30D distance d _30E distance E ₀ standard Values S1 to S41 Step α threshold

Claims (10)

A fused portion for fusing the sheet made of a resin material and the magnetic material coated with the resin material;
And a magnetic body detection unit that detects the position of the magnetic body in a state in which the magnetic body is covered with the sheet prior to the fusion bonding.
The fusion spliced portion is divided into a plurality of regions, and the fusion can be performed for each of the regions.
At least one region is selected from the plurality of regions according to the position of the magnetic material detected by the magnetic material detection unit, and the fusion is performed in the selected region. Fusion device.   The fusion spliced part has a contact surface to be in contact with the sheet covering the magnetic body, and the housing includes a housing for accommodating the magnetic body detection unit, and the contact surface is divided into the plurality of regions. The fusion device according to claim 1.   The fusion device according to claim 1, wherein the fusion part is configured to be capable of adjusting the degree of fusion in each of the regions. The magnetic body detection unit includes at least one Hall element that generates a voltage due to a Hall effect.
A magnet disposed on the opposite side of the sheet of the Hall element;
The fusion device according to any one of claims 1 to 3, further comprising: a voltage detection unit configured to detect the voltage according to the distance between the magnet and the magnetic body in a state in which the Hall element is energized.   5. The fusion device according to claim 4, wherein at least one Hall element is disposed in each of the regions.   The fusion device according to claim 4 or 5, wherein the magnetic body detection unit includes a signal amplification unit that amplifies a difference between the voltage detected by the voltage detection unit and a preset reference value. A determination unit configured to determine the presence or absence of the magnetic body based on a detection result by the voltage detection unit;
The said determination part judges that the said magnetic body exists, when the difference of the said voltage detected by the said voltage detection part and the reference value currently preset is more than a threshold value. The fusion device according to item 1.   The fusion device according to any one of claims 4 to 7, wherein the magnet is a permanent magnet.   The fusion device according to any one of claims 4 to 8, wherein the Hall element and the magnet are separated.   10. The fusion device according to claim 9, wherein the magnetic body detection unit includes a spacer formed of a nonmagnetic body, interposed between the Hall element and the magnet.

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