JP2016110825A - Portable induction heating deposition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electromagnetic induction heating device capable of managing the situation of deposition work at a deposition part and estimating an improper deposition part.SOLUTION: The device comprises: a power supply unit 2; a power feeding part 3 for supplying an electric current to a heating coil 40; a heating controller 53 for controlling heating of a welded object via the power feeding part 3; a place identification data acquisition part 56 for acquiring place identification data including time data and positioning data; a heating data generation part 55 for generating heating data including heating implementation time of induction heating by the heating coil 40; and a work log generation part 57 for generating and recording a work log information composed of time identification data and the heating data for each deposition part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a portable heat welding apparatus that heats and welds an object to be welded using magnetic induction heating.

  For example, in waterproofing work for construction work or civil engineering work, for example, waterproofing work for flat roofs, etc., a conductor piece coated with a resin having heat adhesiveness is fixed to the surface of a concrete body such as concrete with an anchor bolt, and then a waterproof sheet on the body. A construction method is known in which a sheet is bonded and fixed on a casing by inductively heating a conductor piece, and a heat welding apparatus is used for such a construction method.

  An induction heating welding apparatus for building waterproof sheet construction according to Patent Document 1 includes an apparatus main body that is movable by being connected to a commercial power source, and a heating holder that is connected to the apparatus main body by a cable. A voltage device is provided, and the heating holder is provided with an induction coil that is fed via a cable. When constructing the waterproof sheet, fix the conductor pieces having the heat-welding material layer on the upper surface of many required positions on the waterproof construction surface, and stretch the waterproof sheet covering this construction surface over the entire waterproof construction surface. The conductor piece is induction-heated from above the waterproof sheet using this induction heating welding apparatus, and the waterproof sheet is welded and fixed to the conductor piece by the melted heat-welding material layer.

JP 2003-313993 A

  When a large-area sheet or the like is fixed by fusion bonding as described above, the number of welding positions may reach several hundred. Therefore, it is desired to manage the status of the welding operation at each welding location and to estimate the defective welding location.

  In order to solve the above-mentioned problem, a portable induction heating welding apparatus according to the present invention, which heats and welds welding objects at a number of welding locations by electromagnetic induction, includes a power supply unit, an electromagnetic heating coil unit having a heating coil, A power supply unit that supplies electric current to the electromagnetic heating coil unit using electric power from the power supply unit, a heating control unit that controls heating of the welding object via the power supply unit, time data, and positioning data A location specifying data acquisition unit for acquiring location specifying data, a heating data generating unit for generating heating data including a heating execution time of induction heating by the heating coil, and the location specifying data and the heating data for each welding location A work log generation unit that generates and records work log information consisting of

  According to this configuration, for each welding operation for one welding location, location specifying data including time data and positioning data and heating data including heating execution time are recorded as operation log information. Therefore, by analyzing this work log information, it is possible to estimate the defective weld location. Such estimation work can be performed batchwise or online. In addition, when a defective welding location is found by a check by an operator at the site, it is possible to grasp the status of the welding operation performed on the defective welding location.

  In the welding operation between the conductor piece and the waterproof sheet as described in the prior art, each time the induction heating for melting the heat-welding material layer of each conductor piece is completed, the heating point is preferably set at an appropriate pressure while cooling. Press for hours. Thereby, solidification of adhesive resin is promoted and a conductor piece and a waterproof sheet are firmly fixed. Therefore, in the welding operation, quality control of both the heating operation and the pressing operation on the welding location is important. For this reason, in one of the suitable embodiments of the present invention, a pressing pad that presses the welding location after heating, and a pressing data generation unit that generates pressing data indicating the pressing state of the pressing pad are provided, The work log generation unit incorporates the pressing data into the work log information. With this configuration, both the heating work and the pressing work can be evaluated based on the heating data and the pressing data included in the recorded work log information. The pressing state of the pressing pad can be obtained from, for example, a detection value of a pressure sensor provided on the pressing pad or the like.

  The heating state at the welding location of the object to be welded is affected by the temperature at the welding location even during the same heating time. The temperature of this welding location can be estimated from the surface of the object to be welded or its surroundings. From this, in one of the preferred embodiments of the present invention, the surface temperature detector for detecting the surface temperature of the object to be welded, the peripheral region of the object to be welded, or both, and the detected surface temperature. A surface temperature data generation unit that generates heating temperature data during heating is provided, and the work log generation unit incorporates the heating temperature data into the work log information. With this configuration, the state of the welding operation can be evaluated based on the heating execution time and the surface temperature of the welding object, and the reliability of the evaluation result is further improved.

  Moreover, at the time of a pressing operation | work, the thermal deformation of a welding target object is suppressed by fixing the adhesive material fuse | melted by induction heating rapidly. That is, even in the pressing operation, the temperature of the welding object at that time affects the welding quality. Therefore, in one preferred embodiment of the present invention, the surface temperature data generation unit generates pressing temperature data at the time of pressing from the detected surface temperature, and the work log generation unit includes the work log. The pressing temperature data is incorporated into the information. With this configuration, the welding operation can be evaluated in consideration of the pressing surface temperature, and the reliability of the evaluation result is further improved.

  In order to identify each welding location, the positioning data included in the location specifying data may be used, but when the welding locations are dense and the accuracy of the positioning data is worse than the arrangement pitch of the welding locations, Only the positioning data causes an error in specifying the welding location. In this case, since the welding operation is sequentially performed along the sequence of the welding locations, the error can be corrected by using the time data. That is, it is because the two closest welding locations can be regarded as adjacent. As a device that can easily acquire time data and positioning data, a global positioning system (GPS) using radio waves from satellites is widely distributed, which is convenient. For this reason, in one suitable embodiment of the present invention, the above-mentioned place specific data acquisition part is constituted as a GPS unit using the electric wave from a satellite.

  Even if work log information is generated and recorded at the time of welding work at each welding location, the status of welding work at each welding location, that is, the work quality can be evaluated by reading the recorded work log information at any time. it can. When it is desired to know the state of the welding operation immediately after the welding operation at each welding location, it is necessary to provide such an evaluation function in the portable induction heating welding apparatus. Therefore, in one of the preferred embodiments of the present invention, a work evaluation unit is provided that calculates work quality distribution characteristics based on the work log information generated for each of a large number of welding locations.

  At large construction sites, welding work is carried out using a plurality of portable induction heating welding devices. In such a case, work log information recorded by each portable induction heating welding device is sent to a common management device using a memory card or data communication. It is preferable to manage the quality. For this reason, an induction heating welding work management apparatus that collects the work log information generated by a plurality of portable induction heating welding apparatuses and calculates work quality distribution characteristics in a work area having a large number of welding locations is also provided. Proposed by the invention.

It is a schematic diagram which shows the basic structure of the portable induction heating welding apparatus by this invention. It is a schematic diagram which shows an example of the data structure of the work log information by the portable induction heating welding apparatus by this invention. It is a perspective view which shows one of the embodiments of the portable induction heating welding apparatus by this invention. It is a perspective view which shows a waterproof sheet fixing metal fitting. It is sectional drawing of a waterproof sheet fixing metal fitting. It is sectional drawing which shows the formation condition of a waterproof layer. It is a schematic diagram which shows the component of a portable induction heating welding apparatus, and the flow of heating control. It is a functional block diagram which shows the control system of a portable induction heating welding apparatus. It is a schematic diagram which shows an example of the evaluation method of the work log information employ | adopted with the portable induction heating welding apparatus by this invention. It is a side view of the pistol type induction heating welding apparatus which is another embodiment.

Before describing a specific embodiment of the portable induction heating welding apparatus according to the present invention, the basic structure characterizing the present invention will be described with reference to FIG.
Although schematically shown in FIG. 1, in the portable induction heating welding apparatus 100, substantially all of the components are integrally assembled by the housing 1. Here, the housing 1 is a cylindrical body whose upper part is closed by a top plate 11 and whose lower part is open. A rechargeable battery 2 that functions as a power supply unit is disposed below the top plate 11. A power feeding unit 3 is disposed below the battery 2, and an electromagnetic heating coil unit 4 is disposed below the power feeding unit 3. The electromagnetic heating coil unit 4 includes an electromagnetic heating coil (hereinafter simply referred to as a heating coil) 40 and a base 41 on which the heating coil 40 is placed. The base 41 includes a disc portion 42 and a post portion 43 that is erected at the center of the disc portion 42. A circular recess 44 is formed on the bottom surface of the disc portion 42, and the heating coil 40 is held in the recess 44. Since the bottom surface of the disc portion 42 including the lower end of the heating coil 40 functions as a pressing surface that suppresses the object to be welded OB, it is formed in a substantially flat surface.

  In the example of FIG. 1, the welding object OB of the portable induction heating welding apparatus 100 is a fixture 70 fixed to a slab such as a rooftop of a building, and a waterproof sheet 7 joined to the fixture 70. A thermoplastic adhesive layer is formed on the flat fixing surface of the fixture 70, and the waterproof sheet 7 is stacked on the fixture 70, and the portable induction heating welding device 100 is pressed thereon, followed by heating work and thereafter. The pressing operation is performed. By repeating the melt bonding operation consisting of the heating operation and the pressing operation, the waterproof sheet 7 is joined to a large number of fixtures 70, and the waterproof sheet 7 is laid on the slab.

  After the adhesive is melted by induction heating, the waterproof sheet 7 is pressed against the fixture 70 at a predetermined pressure at a temperature at which the adhesive is cured for a predetermined time, whereby a good joint between the fixture 70 and the waterproof sheet 7 can be obtained. . In the portable induction heating welding apparatus 100 according to FIG. 1, after heating, the pressing surface which is the bottom surface of the disk portion 42 so that the pressing operation can be performed by pressing the disk portion 42 of the base 41 against the waterproof sheet 7 as it is. The pressure pad 9 is attached to the disc portion 42 of the base 41 so as to cover the surface. At this time, the pressing pad 9 shown in FIG. 1 is formed as a mounting pad 90 in the form of a shoe that covers the pressing surface composed of the disc portion 42 and the heating coil 40 from below. The mounting pad 90 is made of a resin material such as soft rubber having cushioning properties, and has a pressing portion 91 that has the same shape as the lower surface of the disc portion 42 and is in close contact with the lower surface, and an outer peripheral edge of the pressing portion 91. And a side wall portion 92 having a ring-shaped flange portion 93 that rises perpendicularly from the top and holds down the upper surface edge of the disc portion 42. The mounting pad 90 can be attached to the disc portion 42 so that the disc portion 42 is fitted into a space defined by the pressing portion 91, the side wall portion 92, and the ring-shaped flange portion 93. The pressing portion 91 has a thickness for effectively pressing the waterproof sheet 7 after induction heating. Since the wearable pad 90 can be easily removed, the wearable pad 90 having an appropriate thickness and cushioning property can be used by exchanging it according to the situation. Since the bottom surface of the mounting pad 90 contacts the waterproof sheet 7, at least the mounting pad 90 is configured to protrude from the opening of the housing 1.

  The functional unit of the electronic control system that controls the power supply unit 3 is substantially constructed by a computer unit, and in the example of FIG. 1, it is arranged in a gap space between the battery 2, the power supply unit 3, and the housing 1. Yes. The functional units of the basic electronic control system are a heating control unit 53, a heating data generation unit 55, a location specifying data acquisition unit 56, and a work log generation unit 57. The heating control unit 53 controls heating of the welding object OB via the power feeding unit 3. The heating data generation unit 55 generates heating data including the heating execution time of induction heating by the heating coil 40. The location specifying data acquisition unit 56 acquires location specifying data for specifying each welding location, including time data and positioning data. The work log generation unit 57 generates and records work log information composed of the location specifying data and the heating data for each welding location.

  In the portable induction heating welding apparatus 100 shown in FIG. 1, a pressing data generating unit 58 and a surface temperature data generating unit 59 are further added as functional units of the electronic control system, and the mounting is performed to press the welding location after heating. Press data indicating the press state of the shape pad 90 (an example of the press pad 9) is generated. For this reason, a pressure-sensitive sensor 82 that detects the pressing pressure against the waterproof sheet 7 during the pressing operation after induction heating is provided between the disc portion 42 and the pressing pad 9. The surface temperature data generation unit 59 generates heating temperature data and pressing temperature data from the detection signal from the surface temperature detector 80 that detects the surface temperature of the welding object OB and / or the peripheral area of the welding object OB. To do. The temperature data during heating indicates the surface temperature of the waterproof sheet 7 during heating, and the temperature data during pressing indicates the surface temperature of the waterproof sheet 7 during pressing.

  Therefore, in the portable induction heating welding apparatus 100 shown in FIG. 1, the work log generation unit 57 adds the heating temperature data and the pressing temperature data to the work log information in addition to the location specifying data and the heating data. Append. It is also possible to provide the portable induction heating welding apparatus 100 with a work evaluation unit 500 that calculates work quality distribution characteristics based on work log information generated for each welding location.

  In order to eliminate the need for the power cord, the battery 2 employed as the power source is housed in the housing 1 and can be removed from the housing at any time. In the example of FIG. 1, it is removable and attachable through an opening (which may be closed with a lid) formed in the side wall of the housing 1. The power supply unit 3 includes a power electronics circuit such as an inverter circuit that converts a direct current from the battery 2 into a high-frequency current. By supplying the high-frequency current generated by the power supply unit 3 to the heating coil 40 of the electromagnetic heating coil unit 4, the fixture 70 positioned facing the pressing portion 91 of the mounting pad 90 is electromagnetically heated. .

  Next, the data structure of work log information generated and recorded for each welding location will be described with reference to FIG. In FIG. 2, the operator uses the portable induction heating welding apparatus 100 according to the present invention to place the waterproof sheet 7 placed on a large number of fixtures 70 fixed to the slab at the place where each fixture 70 is arranged. It welds at a certain welding location. The operator melts the adhesive formed on the upper surface of the fixture 70 by induction heating at each welding location (heating operation), and then presses the welding location from above the waterproof sheet 7 at a predetermined pressure for a predetermined time (pressing) work). In FIG. 2, the welding location is indicated by Pxy (x and y are natural numbers). In the example of FIG. 2, the work log information indicating the work state in the welding work including the heating work and the pressing work at each welding place includes the location identification data, the heating data, and the pressing data using the welding place ID as a key. Linked. The location specifying data includes positioning data and time data. By matching the azimuth coordinates (latitude, longitude, etc.) indicated by the positioning data with the map coordinates of the work site while referring to the time data, the welding location ID on the data can be made to correspond to the actual welding location. The heating data includes heating time data and heating temperature data, and the pressing data includes pressing time data and pressing temperature data.

  Work log information having such a data structure is generated and recorded for each welding location. The work evaluation unit 500 reads out the work log information by real-time processing or batch processing and evaluates the work log information so that the work state or work quality of all the welding locations in one welding work site is visualized, for example. Thus, it can be displayed on a display (not shown).

  Further, when performing welding work using a plurality of portable induction heating welding apparatuses 100, all portable induction heating welding apparatuses 100 generate and record work log information having the same data structure. The work log information recorded in this way is collected and evaluated by an induction heating welding work management device or the like, so that the work state of the welding location group in the entire construction site can be managed.

  Next, one specific embodiment of the portable induction heating welding apparatus 100 according to the present invention will be described with reference to FIGS. Again, this portable induction heating welding apparatus 100 is used to fix the waterproof sheet 7 to a fixture 70 fixed to a waterproof base on a rooftop or the like. At that time, the adhesive layer applied to the upper surface of the fixture 70 is melted by heating the fixture 70 by electromagnetic induction, and then the waterproof sheet 7 and the waterproof sheet 7 through the pressing pad 9 under the operation of the cooling mechanism 6. It is pressed between the fixtures 70. Thereby, the waterproof sheet 7 is bonded and fixed to the fixture 70.

  FIG. 3 is a perspective view showing the roof slab of the building before the waterproof sheet 7 is laid. This perspective view shows an operation of bonding a sheet material, which is a waterproof sheet 7, to a fixing tool 70 disposed on a reinforced concrete slab body serving as a waterproof base, using a portable induction heating welding apparatus 100. Yes. This portable induction heating welding apparatus 100 employs the basic structure described with reference to FIGS. 1 and 2.

  The slab body assumes a roof slab. However, in addition to slabs of reinforced concrete structure, slabs formed by laying ALC panels, slabs formed by combining deck plates and metal folded plates and concrete, and those with a heat insulation layer laminated on them, etc. The present invention can be applied to various types of slabs. It is preferable that the slab body can fix the fixing tool 70 with an anchor bolt or the like.

For example, as shown in FIGS. 3, 4, and 5, the fixture 70 melts as an adhesive to the waterproof sheet 7 on the upper surface of a stainless steel disc having a diameter of about 50 to 100 mm and exhibits adhesiveness. A washer-shaped body coated with a planar hot-melt adhesive layer (hereinafter simply referred to as an adhesive layer) 71 made of a thermoplastic synthetic resin such as a polyester resin. The fixture 70 is formed with a countersink recess 72 at the center and an attachment hole 74 of an anchor bolt 79 (see FIG. 6) at the bottom, and the upper surface of the fixture 70 has a predetermined width around the countersink recess 72. An annular recess 73 is formed with a gap therebetween. The fixtures 70 are arranged on the slab body at respective positions at predetermined intervals in the vertical and horizontal directions, and are fixed by screws through the attachment holes 74.
Note that the fixture 70 is formed into a undulating shape as shown in the figure by pressing a sheet metal, and by forming concave portions such as the countersink concave portion 72 and the annular concave portion 73, a secondary cross-section is maintained as a flat plate. The moment increases and high strength can be obtained even with a thin plate.

  The waterproof sheet 7 having a large area is composed of a PVC sheet, and a roll body is formed by winding a long waterproof sheet material having a predetermined width dimension at a factory, and the roll body is arranged while being spread on the site. It is created by adhering the side edges of each waterproof sheet 7. Of course, the waterproof sheet 7 may be formed in advance according to the area to be laid, and the material may be rubber or TPE (thermoplastic elastomer) in addition to PVC. ) Sheet or a waterproof sheet 7 made of other materials.

  As shown in FIG. 6, in order to fix the waterproof sheet 7 to the slab body, first, the waterproof sheet 7 is put on a number of fixtures 70 (see FIG. 6A). Next, the portable induction heating welding device 100 is set at a position directly above the fixture 70 from above the waterproof sheet 7, and induction heating is performed on the fixture 70 (see FIG. 3). By heating the fixing tool 70, the adhesive layer 71 is melted, and the upper surface of the fixing tool 70 and the lower surface of the waterproof sheet 7 are brought into close contact with each other through the melted adhesive, and then the pressure is applied while cooling. 70 and the waterproof sheet 7, and as a result, the waterproof sheet 7 and the slab body are fixed (see FIG. 6B).

  FIG. 7 schematically shows a basic structure of portable induction heating welding apparatus 100 in this embodiment and a signal flow in induction heating control using portable induction heating welding apparatus 100. FIG. 8 shows a functional block diagram of a control system of the portable induction heating welding apparatus 100.

  In this embodiment, the portable induction heating welding apparatus 100 includes a housing 1 in which an upper end of a cylindrical body 12 having a circular cross section is closed with a top plate 11. The cylindrical body 12 is divided into three spaces by two partition walls 13a and 13b, and a first space S1, a second space S2, and a third space S3 in order from the top. The battery 2 is disposed in the uppermost first space S1, the power feeding unit 3 and the control unit 5 are disposed in the intermediate second space S2, and the electromagnetic heating coil unit is disposed in the lowermost third space S3. 4 and a cooling mechanism 6 are arranged. The top plate 11 is provided with an arched grip 19.

  The wall 12 surrounding the first space S1 of the cylindrical body 12 is provided with an opening 12a for taking in and out the battery 2, and the battery 2 is provided on the wall surface at a position facing the opening 12a. 17 is detachable.

  In the wall body surrounding the second space S2 of the cylindrical body 12, in order to release heat released from the power feeding section 3 and the control unit 5 accommodated in the second space S2, a large number of outside air circulation ports are provided. Is formed.

  The electromagnetic heating coil unit 4 and the cooling fan unit 60 as the cooling mechanism 6 are integrally assembled, and the upper end portion thereof is connected to the partition wall 13b. The electromagnetic heating coil unit 4 includes a heating coil 40 and a base 41 that holds the heating coil 40, and the base 41 is a post portion that is erected at the center of the disc portion 42 and the disc portion 42. 43. A cooling fan unit 60 is provided at the upper end of the post portion 43. The cooling fan unit 60 supplies cooling air to the heating coil 40 when the fan is driven by a motor (not shown). Further, a cooling passage 62 through which the cooling air from the cooling fan unit 60 passes is formed in the disc portion 42, and the cooling effect on the waterproof sheet 7 is enhanced. Further, a mounting pad 90 is mounted on the disc portion 42 as the pressing pad 9.

  As shown in FIG. 8, the control unit 5 includes a detection signal evaluation unit 51, a heating behavior calculation unit 52, a heating control unit 53, a cooling control unit 54, a heating data generation unit 55, a place as functional units related to the present invention. A specific data acquisition unit 56, a work log generation unit 57, a pressing data generation unit 58, and a surface temperature data generation unit 59 are provided. These functions are substantially realized by starting a program. These functional units have the functions described with reference to FIG. The control unit 5 is connected to various external devices via the input / output interface 50. As external devices, a memory device 550, a data communication unit 560, a notification unit 570, a temperature detector 80, a sensor / switch group 8, and a GPS unit 800 are connected. Further, the control unit 5 is connected to a controller and a power supply unit 3 built in the battery 2 so as to be able to transmit a signal such as a control signal.

  In this embodiment, the temperature detector 80 includes a surface temperature detector 801 that detects the surface temperature of the waterproof sheet 7 and an environmental temperature detector 802 that detects the environmental temperature around the waterproof sheet 7. The detection signal is sent to the control unit 5. The surface temperature detector 801 and the environmental temperature detector 802 are mounted on a bracket provided in the housing 1. The sensor / switch group 8 is a general term for sensors and switches incorporated in the portable induction heating welding apparatus 100. As particularly relevant to the present invention, the operation switch 81, the pressure-sensitive sensor (or the pressure-sensitive switch). ) 82, a position detection sensor 83. The operation switch 81 is provided around the grip 19 of the housing 1 and has an induction heating start function. The pressure-sensitive sensor 82 is provided between the disc portion 42 and the pressing pad 9 and detects the pressing pressure against the waterproof sheet 7 during the pressing operation after induction heating. The position detection sensor 83 detects whether or not the fixture 70 is accurately positioned within the induction heating effective range of the heating coil 40. In this embodiment, the position detection sensor 83 detects the fixture 70, preferably three or more. This is a magnetic sensor. The GPS unit 800 detects radio waves from a satellite such as a GPS satellite and sends the current position (azimuth coordinate) and current time of the portable induction heating welding apparatus 100 to the location specifying data acquisition unit 56.

  The detection signal evaluation unit 51 of the control unit 5 evaluates signals input from the sensor switch group 8 including the pressure sensor 82 and the position detection sensor 83, the temperature detector 80, and the GPS unit 800, and the evaluation signal Is sent to the functional unit that requires For example, the temperature detection signal is sent to the heating behavior calculation unit 52 and the heating control unit 53 as a temperature detection signal. A signal from the pressure-sensitive sensor 82 is sent to the pressing data generation unit 58, where the pressing data generation unit 58 calculates the pressing force with time and further displays pressing data indicating a pressing time at a predetermined pressure or higher. The signal from the position detection sensor 83 is compared with a reference range set in advance, and when the signal is out of the reference range, a visual alarm or an audible alarm is given through the notification unit 570.

  The heating behavior calculation unit 52 includes a heating time calculation unit 521, a heating intensity calculation unit 522, and a behavior derivation table 523. The heating time calculation unit 521 calculates the heating time using the behavior derivation table 523 from the temperature detection signal including information on the surface temperature of the waterproof sheet 7 and the environmental temperature. The heating intensity calculator 522 calculates the heating intensity (induction heating intensity) from the temperature detection signal using the behavior derivation table 523. At that time, if the heating time is divided into unit times and the heating intensity is calculated for each unit time, a heating intensity curve over time can be obtained. A heating control command based on the heating intensity curve is transferred to the heating control unit 53. The heating control unit 53 gives a control signal to the power feeding unit 3 based on the received heating control command. Based on the received control signal, the power supply unit 3 controls the power electro circuit (inverter circuit, booster circuit, etc.) over time so that an appropriate heating behavior is realized in the fixture 70.

  After the induction heating is finished, the cooling control unit 54 gives a cooling control signal to the cooling fan unit 60, drives the cooling fan 61, cools the mounting pad 90 and the heating coil 40, and as a result, the waterproof sheet 7 is removed. Cooling. During this cooling, by pressing the waterproof sheet 7 located above the fixture 70 via the mounting pad 90, the adhesive fixing between the fixture 70 and the waterproof sheet 7 is favorably promoted.

  The memory device 550 records the work log information generated by the work log generation unit 57 on a removable recording medium. The data communication unit 560 is used to receive internally generated data such as work log information and data transmitted from the outside. In this embodiment, work log information is sent to the induction heating welding work management apparatus CC by data transmission via a removable recording medium or the data communication unit 560.

  In this embodiment, the work evaluation unit 500 (see FIG. 8) constructed in the induction heating welding work management apparatus CC is sent from one or more portable induction heating welding apparatuses 100 as shown in FIG. The work log information is developed and the work evaluation of each welding place at one construction place is performed. In this example, when the welding location of the work log information is expanded to the coordinates at the construction site, not only the positioning data and time data obtained by the GPS but also the work movement pattern selected by the operator is considered. In other words, the rough work route taken by the worker during the welding work is selected from several patterns, thereby making it easy to assign the welding location to the construction location coordinate system. When this coordinate assignment is completed, a work evaluation value is assigned to each coordinate (welded location). In this embodiment, the work evaluation value is derived using a preset table, an arithmetic expression, or a logical expression with heating time data, pressing data, heating temperature data, and pressing temperature data as input parameters. The work evaluation value is most easily expressed as a binary value of good and bad, but it is convenient for visual evaluation display when expressed in three to several stages. FIG. 9 illustrates a visual display in which the work evaluation values expressed in several stages are shown in a bar graph form.

  FIG. 10 shows an ultra-small pistol type induction heating welding apparatus as another embodiment of the portable induction heating welding apparatus 100 according to the present invention. The housing 1 is a cylindrical body bent into an L shape, and a rechargeable battery 2 is disposed on one end side thereof, and an electromagnetic heating coil unit 4 is disposed on the other end side. A pressing pad 9 is mounted on the surface of the electromagnetic heating coil unit 4 that faces the welding object OB. A grip portion 190 having a shape that can be easily gripped with one hand is formed in an intermediate portion of the housing 1, and a trigger that functions as the operation switch 81 is provided at a position that can be easily operated with a finger of the hand that grips the grip portion 190. The control unit 5 is disposed inside the grip 190, and the power feeding unit 3 is disposed between the control unit 5 and the electromagnetic heating coil unit 4. A flat panel that functions as the notification unit 570 is provided around the grip unit 190, and various information can be displayed. Further, a detachable semiconductor memory card that functions as the memory device 550 is also mounted. Various other sensor / switch groups 8, a temperature detector 80, and a GPS unit 800 can also be provided. In order to enable one-handed operation, a lightweight and small high-performance battery is used as the battery 2, but the battery capacity is insufficient to continue the electromagnetic induction heating for a long time, so that the worker always has a plurality of spares. Bring the battery 2 and work while replacing the battery.

[Other Embodiments]
(1) In the above-described embodiment, GPS data is used as positioning data. Instead, an IC tag for sending a fixture ID is attached to each fixture 70, and a tag reader is attached to the portable induction heating welding apparatus 100. And the received fixture ID may be used as positioning data.
(2) In the embodiment described above, the battery 2, the power feeding unit 3, and the control unit 5 are integrally assembled by the housing 1 with the electromagnetic heating coil unit 4 and the cooling fan unit 60. Instead of this, the battery 2 may be separated and separated from the housing 1 in which the electromagnetic heating coil unit 4 and the power feeding unit 3 are assembled, and connected from the battery 2 to the power feeding unit 3 using a cable. Furthermore, the battery 2 and the power feeding unit 3 may be integrated, and the power feeding unit 3 and the electromagnetic heating coil unit 4 may be connected by a cable. Moreover, in this invention, using a commercial power supply as a power supply part is not excluded.
(3) The base 41 may be attached to the housing 1 so as to allow swinging in one direction or all directions around the lateral swing axis by using a universal joint or the like. By adopting this configuration, the electromagnetic heating coil unit 4 and the pressing pad 9 can take a free angular attitude with respect to the housing 1 within a predetermined angle.
(4) Each functional unit of the control unit 5 shown in FIG. 8 is divided for convenience of explanation, and a plurality of arbitrary functional units may be integrated, or each functional unit may be further divided. May be.

  The present invention can be applied to a portable heating apparatus that heats and welds an object to be welded using magnetic induction heating.

100: Portable induction heating welding device 1: Housing 2: Battery (power supply unit)
3: Power feeding unit 4: Electromagnetic heating coil unit 40: Heating coil 41: Base 42: Disc unit 53: Heating control unit 55: Heating data generation unit 56: Location specifying data acquisition unit 57: Work log generation unit 58: Press Data generation unit 59: Surface temperature data generation unit 500: Work evaluation unit 550: Memory device 560: Data communication unit 7: Waterproof sheet 70: Fixing tool 71: Adhesive layer 80: Temperature detector 82: Pressure sensor 800: GPS unit 801: Surface temperature detector 802: Environmental temperature detector 9: Press pad CC: Induction heating welding work management device OB: Welding object

Claims (7)

A portable induction heating welding apparatus that heats and welds objects to be welded at a large number of welding locations by electromagnetic induction,
A power supply,
An electromagnetic heating coil unit having a heating coil;
A power feeding unit that supplies current to the electromagnetic heating coil unit using power from the power source unit;
A heating control unit that controls heating of the welding object via the power feeding unit;
A location specifying data acquisition unit for acquiring location specifying data including time data and positioning data;
A heating data generation unit that generates heating data including a heating execution time of induction heating by the heating coil;
A work log generating unit for generating and recording work log information composed of the location specifying data and the heating data for each welding location;
A portable induction heating welding apparatus provided with   A pressing pad that presses the welding location after heating and a pressing data generation unit that generates pressing data indicating the pressing state of the pressing pad are provided, and the work log generation unit incorporates the pressing data into the work log information. The portable induction heating welding apparatus according to claim 1.   A surface temperature detector for detecting a surface temperature of the welding object or a peripheral region of the welding object or both, and a surface temperature data generating unit for generating heating temperature data at the time of heating from the detected surface temperature; The portable induction heating welding apparatus according to claim 1, wherein the work log generation unit includes the heating temperature data in the work log information.   The said surface temperature data generation part produces | generates the temperature data at the time of a press at the time of the press from the detected said surface temperature, The said work log production | generation part incorporates the said temperature data at the time of a press into the said work log information. Portable induction heating welding equipment.   The portable induction heating welding apparatus according to any one of claims 1 to 4, wherein the location specifying data acquisition unit is configured as a GPS unit that utilizes radio waves from a satellite.   The portable induction heating according to any one of claims 1 to 5, further comprising a work evaluation unit that calculates work quality distribution characteristics based on the work log information generated for each of a large number of welding locations. Welding equipment.   The work log information generated by a plurality of portable induction heating welding apparatuses according to any one of claims 1 to 5 is collected, and distribution characteristics of work quality in a work area having a large number of welding locations are obtained. Induction heating welding work management device to calculate.

Images