WO2021019651A1 - Linking-seat welding device and linking-seat welding method - Google Patents

Linking-seat welding device and linking-seat welding method Download PDF

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Publication number
WO2021019651A1
WO2021019651A1 PCT/JP2019/029689 JP2019029689W WO2021019651A1 WO 2021019651 A1 WO2021019651 A1 WO 2021019651A1 JP 2019029689 W JP2019029689 W JP 2019029689W WO 2021019651 A1 WO2021019651 A1 WO 2021019651A1
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WO
WIPO (PCT)
Prior art keywords
mold
punishment
tubular body
collective
tubular
Prior art date
Application number
PCT/JP2019/029689
Other languages
French (fr)
Japanese (ja)
Inventor
博雅 上田
茂孝 北森
周平 大野
Original Assignee
昭和電工マテリアルズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 昭和電工マテリアルズ株式会社 filed Critical 昭和電工マテリアルズ株式会社
Priority to PCT/JP2019/029689 priority Critical patent/WO2021019651A1/en
Priority to JP2021536492A priority patent/JP7375020B2/en
Publication of WO2021019651A1 publication Critical patent/WO2021019651A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/14—Electrodes for lead-acid accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/14—Electrodes for lead-acid accumulators
    • H01M4/16—Processes of manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H01M4/76—Containers for holding the active material, e.g. tubes, capsules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • One aspect of the present invention relates to a collective punishment welding device and a collective punishment welding method.
  • Lead-acid batteries are widely used as secondary batteries for industrial or consumer use, and in particular, lead-acid batteries for electric vehicles (so-called batteries), UPS (Uninterruptible Power Supply), disaster prevention (emergency) radio, telephones, etc. There is a lot of demand for lead-acid batteries for backup.
  • the electrodes of the lead-acid battery are, for example, a plurality of tubular bodies, a core metal inserted into each of the plurality of tubular bodies, lead powder filled inside the plurality of tubular bodies, and a plurality of tubular bodies. It is equipped with a series attached to the end of the.
  • Patent Document 1 discloses a technique of inserting a coupling into each of the end portions of a plurality of tubular bodies and performing heat welding.
  • One aspect of the present invention is to provide a collective punishment welding device and a collective punishment welding method capable of increasing the welding strength between a tubular body and a collective punishment.
  • the joint seat welding device is a device that heat-welds the joint seats to the ends of a plurality of tubular bodies used for electrodes, and has the joint seats inserted into the ends of the plurality of tubular bodies.
  • a mold for heating the end portion while pressurizing the mold is provided, and the contact surface of the mold that abuts on the end portions of the plurality of tubular bodies has a curved surface along the outer surface of the plurality of tubular bodies.
  • the ends of a plurality of tubular bodies can be pressurized and heated by using a mold.
  • the contact surface of the mold has a curved surface along the outer surface of the plurality of tubular bodies. Therefore, for example, it is possible to suppress the bias of heating and pressurizing the end portion of the tubular body, and to heat and pressurize the end portion of the tubular body in a manner suitable for the tubular body.
  • the punishment can be appropriately heat-welded to each of the plurality of tubular bodies, and the welding strength between the tubular body and the punishment can be increased.
  • the tubular body has a cylindrical shape
  • the curved surface of the contact surface in the mold has a circular shape or an arc shape when viewed from the axial direction of the tubular body.
  • the radius of the circular or arc shape of the curved surface may be equal to or less than the outer radius of the tubular body.
  • the collective punishment may be formed of a material containing polystyrene.
  • the punishment can be reliably heat-welded to the ends of the plurality of tubular bodies.
  • the collective punishment is inserted into each of a bottomed box-shaped base having a long opening and the ends of a plurality of tubular bodies provided on the bottom surface of the base.
  • a gripping member that includes a plurality of tubular portions and grips the base portion of the collective punishment may be further provided.
  • the gripping member can grip the base portion, which is a portion other than the portion to be pressurized and heated in the collective punishment. It is possible to suppress the influence of the pressurization and heating on the gripping of the collective punishment.
  • the gripping member includes a pair of arms, and the pair of arms move away from each other along the longitudinal direction of the base so as to be on the inner surface of the base in the longitudinal direction of the base.
  • the base may be gripped by abutting along. According to this configuration, the gripping member can specifically grip the base.
  • the dies are provided in at least one of an upper mold and a lower mold that cooperate with each other to sandwich a plurality of tubular bodies, and an upper mold and a lower mold.
  • the lower mold side surface of the upper mold and the upper mold side surface of the lower mold have contact surfaces, and the upper mold and the lower mold come close to each other. It may further include a drive unit that drives them apart. According to this configuration, the above-mentioned effect that the end portion of the tubular body can be heated and pressurized in a manner suitable for the tubular body can be concretely realized.
  • the joint-seat welding method is a method of heat-welding the joints to the ends of a plurality of tubular bodies used for electrodes, and is an insertion step of inserting the joints into the ends of the plurality of tubular bodies.
  • a pressurizing and heating step of heating the ends while pressurizing the ends of the plurality of tubular bodies with the joint seats inserted into the ends of the plurality of tubular bodies is provided, and the ends of the plurality of tubular bodies are provided in the mold.
  • the contact surface that comes into contact with the surface has a curved surface along the outer surface of the plurality of tubular bodies.
  • the ends of a plurality of tubular bodies can be pressurized and heated by using a mold.
  • the contact surface of the mold has a curved surface along the outer surface of the plurality of tubular bodies. Therefore, for example, it is possible to suppress the bias of heating and pressurizing the end portion of the tubular body, and to heat and pressurize the end portion of the tubular body in a manner suitable for the tubular body.
  • the punishment can be appropriately heat-welded to each of the plurality of tubular bodies, and the welding strength between the tubular body and the punishment can be increased.
  • the tubular body has a cylindrical shape
  • the curved surface of the contact surface in the mold has a circular shape or an arc shape when viewed from the axial direction of the tubular body.
  • the radius of the circular or arc shape of the curved surface may be equal to or less than the outer radius of the tubular body.
  • the collective punishment may be formed of a material containing polystyrene.
  • the punishment can be reliably heat-welded to the ends of the plurality of tubular bodies.
  • the collective punishment is inserted into each of a bottomed box-shaped base having a long opening and the ends of a plurality of tubular bodies provided on the bottom surface of the base.
  • a plurality of tubular portions are included, and a gripping step of gripping the base of the collective punishment with a gripping member is further provided before the insertion step.
  • the joint seat may be inserted into the end portion of the tubular body of the above, and the end portion may be heated while being pressed by a mold while the base portion of the joint seat is gripped by the gripping member.
  • the gripping member can grip the base portion, which is a portion other than the portion to be pressurized and heated in the collective punishment.
  • the end portion of the tubular body can be heated and pressurized while the base portion is gripped by the gripping member, the end portion of the tubular body can be heated and pressurized with high accuracy.
  • FIG. 1 is a cross-sectional view schematically showing a lead storage battery according to an embodiment.
  • FIG. 2 is a partial cross-sectional view taken along the line II-II of FIG.
  • FIG. 3 is a perspective view showing the positive electrode of FIG.
  • FIG. 4A is a plan view showing the upper collective punishment of FIG.
  • FIG. 4B is a front view showing the upper collective punishment of FIG.
  • FIG. 5 is a diagram showing a part of a cross section taken along the line VV of FIG. 4A.
  • FIG. 6 is a block diagram showing a schematic configuration of a collective punishment welding device according to an embodiment.
  • FIG. 7 is a schematic perspective view showing the pallet of FIG.
  • FIG. 8 is a schematic front view showing the chucker of FIG. FIG.
  • FIG. 9 is a schematic plan view showing the chucker arm of FIG.
  • FIG. 10A is a schematic front view showing the mold of FIG.
  • FIG. 10B is a schematic plan view showing the mold of FIG.
  • FIG. 11A is a front view showing the contact surface of the mold of FIG.
  • FIG. 11B is a view of the tubular body of FIG. 1 as viewed from the axial direction.
  • FIG. 12 is a schematic plan view showing the peripheral configuration of the mold of FIG.
  • FIG. 13 is a schematic plan view showing a state in which the tubular body is placed on the pallet in FIG.
  • FIG. 14 is a schematic plan view showing a state in which the tubular body is pushed by the holding tool in FIG. FIG.
  • FIG. 15A is a diagram illustrating an example of gripping the upper collective punishment with the chucker of FIG.
  • FIG. 15B is a diagram illustrating a continuation of FIG. 15A.
  • FIG. 16A is a cross-sectional view illustrating an example in which the upper end portion of the tubular body is heated while being pressurized by the mold of FIG. 16 (b) is a cross-sectional view illustrating the continuation of FIG. 16 (a).
  • FIG. 17A is a cross-sectional view illustrating the continuation of FIG. 16B.
  • FIG. 17B is a cross-sectional view illustrating the continuation of FIG. 17A.
  • the upper collective punishment (collective punishment) is heat-welded to the upper ends (ends) of a plurality of tubular bodies used for electrodes in a lead-acid battery. Therefore, first, the lead storage battery will be described, and then the upper collective punishment will be described.
  • FIG. 1 is a cross-sectional view schematically showing the lead storage battery 100.
  • FIG. 2 is a partial cross-sectional view taken along the line II-II of FIG.
  • FIG. 3 is a perspective view showing the positive electrode 10.
  • the positive electrode 10 and the negative electrode 20 are alternately arranged via the separator 30 from the front side to the back side of the drawing.
  • a part of the positive electrode 10 is shown in cross section.
  • FIG. 2 shows a laminated structure of a positive electrode 10, a negative electrode 20, and a separator 30 when the lead-acid battery 100 is viewed from above.
  • the terms "upper” and “lower” correspond to the upper and lower parts in the vertical direction (hereinafter, the same applies).
  • the Z direction corresponds to the vertical direction
  • the X direction corresponds to the direction orthogonal to the Z direction
  • the Y direction corresponds to the direction orthogonal to the Z direction and orthogonal to the X direction.
  • the lead-acid battery 100 includes an electrode group 110, an electric tank 120 accommodating the electrode group 110, and connecting members 130a and 130b connected to the electrode group 110. It includes pole columns 140a and 140b connected to the connecting members 130a and 130b, a liquid spout 150 for closing the liquid injection port of the electric tank 120, and a support member 160 connected to the electric tank 120.
  • the electrode group 110 includes a plurality of positive electrodes 10, a plurality of negative electrodes 20, and a plurality of separators 30.
  • the positive electrode 10 and the negative electrode 20 are alternately arranged via the separator 30.
  • the space around the positive electrode 10 between the separators 30 is filled with the electrolytic solution 40.
  • the positive electrode 10 is, for example, a plate-shaped electrode.
  • the positive electrode 10 includes a plurality of tubular bodies 12a, a plurality of core metal (current collector) 14, a positive electrode material (electrode material) 16, a lower collective punishment 12c, an upper collective punishment (collective punishment) 1, and an ear portion 12d. , Have.
  • a plurality of tubular bodies 12a are arranged side by side in a row adjacent to each other along a direction orthogonal to the axial direction (hereinafter, also simply referred to as "axial direction").
  • a predetermined number of tubular bodies 12a are arranged side by side.
  • the plurality of tubular bodies 12a form a group of active material holding tubes (clad tubes).
  • the outer shape of the tubular body 12a having a cross section perpendicular to the axial direction is circular, but may be elliptical, rounded quadrangle, or the like.
  • the tubular body 12a is formed of a porous body.
  • the tubular body 12a may be formed of, for example, a base material such as a woven fabric or a non-woven fabric.
  • the material of the base material a material having acid resistance can be used.
  • Materials for the base material include polyolefin (polypropylene, polyethylene, etc.), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), polycarbonate (PC). ) And other resins, glass fibers, silicon carbide, alumina and other inorganic materials.
  • the tubular body 12a preferably contains a thermoplastic resin, and more preferably polyolefin, from the viewpoint of easily improving the cycle characteristics.
  • the resin may be held on the base material.
  • the resin include acrylic resin, epoxy resin, phenol resin, melamine resin, styrene resin and the like.
  • the resin may be held on the inner surface or outer surface of the base material, or on the surface in the pores of the base material, or may be attached to the base material.
  • the resin may be held on a part of the base material or may be held on the entire base material.
  • the styrene polymer is held on the base material at the upper end portion where the upper joint 1 is inserted.
  • the core metal 14 is inserted into each tubular body 12a.
  • the core metal 14 has a rod shape.
  • the core metal 14 extends along the axial direction inside the tubular body 12a.
  • the constituent material of the core metal 14 may be any conductive material, and examples thereof include lead alloys such as lead-calcium-tin alloys and lead-antimony-arsenic alloys.
  • the lead alloy may contain selenium, silver, bismuth and the like.
  • the positive electrode material 16 is filled inside the tubular body 12a.
  • the positive electrode material 16 contains an active material.
  • the tubular body 12a, the core metal 14, and the positive electrode material 16 form a tubular electrode (rod-shaped electrode).
  • the tubular electrode of the positive electrode 10 is electrically connected to the pole pillar 140a via the upper connecting seat 1, the selvage portion 12d, and the connecting member 130a.
  • the lower connecting seat 12c is attached to the lower end portion of the plurality of tubular bodies 12a, which is the bottom end portion of the electric tank 120 (the end portion on one end side of the tubular body 12a).
  • the lower joint 12c seals the lower ends of the plurality of tubular bodies 12a.
  • the lower joint 12c is fitted to the lower ends of the plurality of tubular bodies 12a.
  • the lower joint 12c may be fixed to the lower ends of the plurality of tubular bodies 12a by a thermosetting adhesive or the like.
  • the upper joint seat 1 is attached to the upper end portion of the tubular body 12a, which is the end portion on the top side of the electric tank 120 (the end portion on the other end side of the tubular body 12a).
  • the upper joint seat 1 is fixed to the upper end portion of the tubular body 12a by welding. In the welding of the upper joint 1 and the tubular body 12a, the boundary portions thereof may be integrated. The details of welding will be described later.
  • the lower connecting seat 12c and the upper connecting seat 1 are in contact with the tubular body 12a and the core metal 14 and the positive electrode material 16 arranged in the tubular body 12a.
  • the lower joint 12c and the upper joint 1 hold the tubular body 12a, the core metal 14, and the positive electrode material 16.
  • One end of the selvage 12d is connected to the upper collective punishment 1.
  • the other end of the ear portion 12d is connected to the connecting member 130a.
  • the negative electrode 20 is, for example, a plate-shaped electrode.
  • the negative electrode 20 is, for example, a paste type negative electrode plate.
  • the negative electrode 20 is electrically connected to the pole pillar 140b via the connecting member 130b.
  • the negative electrode 20 has a negative electrode current collector and a negative electrode material which is an electrode material held by the negative electrode current collector.
  • a plate-shaped current collector can be used as the negative electrode current collector.
  • the negative electrode material contains an active material.
  • the support member 160 is arranged on the bottom surface of the electric tank 120 and supports the lower collective punishment 12c.
  • the support member 160 has a plurality of ridges 160a protruding upward.
  • the ridge 160a abuts on the lower joint 12c (see FIG. 1). That is, the support member 160 supports the bottom surface side portion of the electric tank 120 in the lower collective punishment 12c by each ridge 160a.
  • FIG. 4A is a plan view showing the upper collective punishment 1.
  • FIG. 4B is a front view showing the upper collective punishment 1.
  • FIG. 5 is a diagram showing a part of a cross section taken along the line VV of FIG. 4A.
  • the upper joint 1 is provided on a bottomed box-shaped base 2 having a long opening 2a and a bottom surface 2b of the base 2. Also includes a plurality of tubular portions 3.
  • the base 2 abuts on the upper end of the tubular body 12a.
  • the base 2 has a pair of side walls 2c facing in the longitudinal direction and a pair of side walls 2d facing in the lateral direction.
  • the pair of side walls 2c are bent so as to have an arc shape that bulges outward in the longitudinal direction in a plan view.
  • the pair of side walls 2d extend in a straight line parallel to each other in a plan view.
  • a predetermined number of tubular portions 3 are provided corresponding to the number of the plurality of tubular bodies 12a.
  • the tubular portion 3 has a cylindrical shape having an outer diameter corresponding to the inner diameter of the tubular body 12a.
  • the tubular portion 3 is inserted into each of the upper end portions of the plurality of tubular bodies 12a.
  • the tubular portion 3 has a tubular hole 3a that communicates with the inside of the base portion 2.
  • the outer peripheral surface of the tubular portion 3 is inclined so as to increase in diameter as the distance from the base portion 2 is increased, and then is inclined so as to be tapered at the tip portion.
  • the upper collective punishment 1 is made of a material containing polystyrene.
  • the material of the upper collective punishment 1 is not particularly limited.
  • a material having acid resistance can be used as the material of the upper collective punishment 1, a material having acid resistance can be used.
  • the material of the upper junction 1 include resins such as polyolefin (polypropylene, polyethylene, etc.), polyethylene terephthalate (PET), polystyrene (PS), polyvinylidene fluoride (PVDF), polycarbonate (PC), and the like.
  • FIG. 6 is a block diagram showing a schematic configuration of the collective punishment welding device 50.
  • the collective punishment welding device 50 is a device that heat-welds the upper collective punishment 1 to the upper end of the tubular body 12a.
  • the collective punishment welding device 50 includes a pallet 51, a tubular body accumulating portion 52, an upper multi-seat accumulating portion 53, a tubular body supply device 54, a chucker (grasping member) 55, a mold 60, a mold driving mechanism (driving unit) 56, and the like.
  • the presser 57, the presser drive mechanism 58, and the controller 59 are provided.
  • FIG. 7 is a schematic perspective view showing the pallet 51.
  • the pallet 51 is a mounting table on which a plurality of tubular bodies 12a are placed.
  • a plurality of tubular bodies 12a whose axial direction is the X direction are placed on the pallet 51 in a state of being aligned in the Y direction.
  • a predetermined number of shallow U-shaped grooves 51a along the outer peripheral surface of the tubular body 12a are provided on the upper surface of the pallet 51.
  • the pallet 51 is fixed to the frame, for example.
  • the pallet 51 is not particularly limited, and various known pallets can be used as long as a plurality of tubular bodies 12a can be arranged and placed.
  • tubular body accumulating portion 52 accumulates a plurality of tubular bodies 12a supplied from the outside.
  • the tubular body accumulation portion 52 is not particularly limited, and various known accumulation portions such as an accumulation box can be used.
  • the upper collective punishment accumulation unit 53 accumulates a plurality of upper collective punishments 1 supplied from the outside.
  • a plurality of upper collective punishments 1 are stacked in the Z direction with the longitudinal direction in the Y direction. Further, in the upper collective punishment accumulation portion 53, a plurality of upper collective punishments 1 are stacked with the axial direction of the tubular portion 3 in the X direction. Furthermore, in the upper collective punishment accumulation portion 53, the position of the upper collective punishment 1 when the upper collective punishment 1 is attached to the upper end of a predetermined number of tubular bodies 12a mounted on the pallet 51 (hereinafter, simply "attachment position").
  • a plurality of upper collective punishments 1 are stacked so that the positions in the Y direction are equal to each other, that is, the upper collective punishments 1 integrated in the upper collective punishment accumulation portion 53 do not move in the Y direction. It can be moved to the mounting position.
  • the upper collective punishment accumulation portion 53 is not particularly limited, and various known accumulation portions such as an accumulation shelf can be used.
  • the tubular body supply device 54 is a device that supplies a plurality of tubular bodies 12a from the tubular body accumulating portion 52 to the pallet 51.
  • the tubular body supply device 54 arranges and places a predetermined number of tubular bodies 12a out of a plurality of tubular bodies 12a accumulated in the tubular body accumulating portion 52 on the pallet 51.
  • the tubular body supply device 54 is not particularly limited, and various known supply devices can be used.
  • the tubular body supply device 54 may include at least one of a robot arm and a conveyor for supplying a predetermined number of tubular bodies 12a from the tubular body accumulating portion 52 to the pallet 51.
  • the tubular body supply device 54 is connected to the controller 59, and its operation is controlled by the controller 59.
  • FIG. 8 is a schematic front view showing the chucker 55.
  • FIG. 9 is a schematic plan view showing the arm 55a of the chucker 55.
  • the chucker 55 grips the base 2 of the upper punishment 1. Further, the chucker 55 moves the gripped upper connecting seat 1 to the mounting position, and inserts the upper connecting seat 1 into the upper end portions of the plurality of tubular bodies 12a.
  • the chucker 55 has a pair of arms 55a, an arm holder 55b, a Z-axis rail 55c, and an X-axis rail 55d.
  • the pair of arms 55a are members that extend in an L shape in a plan view, and after extending in the X direction, extend in the Y direction so as to separate from each other.
  • the pair of arms 55a move away from each other and abut (push) the inner surface of the side wall 2c of the base 2 of the upper collective punishment 1 along the longitudinal direction of the base 2 to grip the base 2 (FIG. See 15, details below).
  • the arm holder 55b holds the pair of arms 55a so as to be movable in the Y direction.
  • the Z-axis rail 55c is configured to include a rail extending in the Z direction.
  • the Z-axis rail 55c supports the arm holder 55b so as to be movable in the Z direction.
  • the X-axis rail 55d is configured to include a rail extending in the X direction.
  • the X-axis rail 55d supports the Z-axis rail 55c so as to be movable in the X direction.
  • the base 2 of one upper collective punishment 1 is gripped by the pair of arms 55a from the upper collective punishment accumulation portion 53, and the pair of arms 55a is attached by the Z-axis rail 55c and the X-axis rail 55d.
  • the tubular portion 3 of the upper joint seat 1 is inserted into the upper end portion of the tubular body 12a.
  • the chucker 55 is connected to the controller 59, and its operation is controlled by the controller 59.
  • FIG. 10A is a schematic front view showing the mold 60.
  • FIG. 10B is a schematic plan view showing the mold 60.
  • FIG. 11A is a front view showing the contact surfaces 61a and 62a of the mold 60.
  • FIG. 11B is a view of the tubular body 12a as viewed from the axial direction.
  • the mold 60 is heated while pressurizing the upper end portion of the plurality of tubular bodies 12a with the upper joint 1 inserted in the upper end portion. It is a member.
  • the mold 60 has an upper mold 61, a lower mold 62, and a heater 63.
  • the upper mold 61 and the lower mold 62 cooperate to sandwich the upper end portion of a predetermined number of tubular bodies 12a.
  • the upper mold 61 and the lower mold 62 have an elongated shape with the Y direction as the longitudinal direction, and here, have a rectangular rod shape.
  • the upper mold 61 and the lower mold 62 are arranged so as to face each other in the Z direction.
  • the upper mold 61 and the lower mold 62 are arranged adjacent to one side of the pallet 51 in the X direction (see FIG. 12).
  • the upper mold 61 and the lower mold 62 are made of, for example, brass.
  • the surface of the upper mold 61 on the lower mold 62 side has a contact surface 61a that abuts on the upper ends of a predetermined number of tubular bodies 12a.
  • the surface of the lower mold 62 on the upper mold 61 side has a contact surface 62a that abuts on the upper end portion of a predetermined number of tubular bodies 12a.
  • the contact surfaces 61a and 62a are curved surfaces along (following) the outer peripheral surface of the tubular body 12a.
  • the contact surfaces 61a and 62a are provided at positions corresponding to the grooves 51a of the pallet 51 in the Y direction (see FIG. 12).
  • the upper mold 61 and the lower mold 62 are configured to approach and separate from each other (open / close operation) by driving the mold driving mechanism 56.
  • the heater 63 is provided inside each of the upper mold 61 and the lower mold 62.
  • the heater 63 heats the upper mold 61 and the lower mold 62.
  • the heater 63 is connected to the controller 59, and the heating temperature and ON / OFF are controlled by the controller 59.
  • the heater 63 is not particularly limited, and various known heaters can be used.
  • the mold driving mechanism 56 In such a mold 60, for example, in a state where the upper end portion of the tubular body 12a into which the upper connecting seat 1 is inserted is placed on the contact surface 62a of the lower mold 62, the mold driving mechanism 56 The upper mold 61 and the lower mold 62 are movable in the Z direction so as to approach each other. At this time, the upper mold 61 and the lower mold 62 are heated to a predetermined temperature by the heater 63. As a result, the upper end portion of the tubular body 12a into which the upper connecting seat 1 is inserted is strongly sandwiched (tightened) between the abutting surface 61a and the abutting surface 62a while being heated. The upper mold 61 and the lower mold 62 are not close to each other in the Z direction until they come into contact with each other, and when the upper mold 61 and the lower mold 62 are closest to each other in the Z direction, between them. A gap is formed in.
  • the curved surface of the contact surface 61a of the upper mold 61 is formed along the outer peripheral surface of the tubular body 12a when viewed from the X direction. It has an arc shape.
  • the shape of the curved surface of the contact surface 62a of the lower mold 62 is a shape along the outer peripheral surface of the tubular body 12a and is an arc shape equal to the shape of the curved surface of the contact surface 61a. ..
  • the radius rd of the arc shape of the curved surface of the contact surface 61a is equal to or less than the outer radius rt of the tubular body.
  • the radius of the arc shape of the curved surface of the contact surface 62a is equal to or less than the outer radius rt.
  • the mold drive mechanism 56 is a mechanism that drives the upper mold 61 and the lower mold 62 so as to approach and separate from each other.
  • the mold drive mechanism 56 includes, for example, an air cylinder.
  • the mold drive mechanism 56 is connected to the controller 59, and its operation is controlled by the controller 59.
  • the mold drive mechanism 56 is not particularly limited, and various known drive mechanisms can be used.
  • FIG. 12 is a schematic plan view showing the peripheral configuration of the mold 60.
  • FIG. 13 is a schematic plan view showing a state in which the tubular body 12a is placed on the pallet 51 in FIG.
  • FIG. 14 is a schematic plan view showing a state in which the tubular body 12a is pushed by the holding tool 57 in FIG.
  • the left side in the drawing corresponds to the upper end side
  • the right side in the drawing corresponds to the lower end side.
  • the retainer 57 is arranged on the other side (opposite side of the mold 60) of the pallet 51 in the X direction.
  • the retainer 57 abuts on the lower end surface of the tubular body 12a placed on the pallet 51, and the tubular body is such that the upper end portion of the tubular body 12a is inserted between the upper mold 61 and the lower mold 62.
  • the lower end surface of 12a is pushed in the X direction, and the pushed tubular body 12a is suppressed so as not to return.
  • the retainer 57 is configured to approach and separate from the pallet 51 in the X direction by driving the retainer drive mechanism 58.
  • the presser 57 is not particularly limited, and various known devices can be used.
  • the restraint drive mechanism 58 is a mechanism that drives the restraint 57 along the X direction.
  • the retainer drive mechanism 58 includes, for example, an air cylinder.
  • the restraint drive mechanism 58 is connected to the controller 59, and its operation is controlled by the controller 59.
  • the presser drive mechanism 58 is not particularly limited, and various known drive mechanisms can be used.
  • the controller 59 is an electronic control unit including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like.
  • the controller 59 can be configured as software in which a program stored in the ROM is loaded on the RAM and executed by the CPU.
  • the controller 59 may be configured as hardware such as an electronic circuit.
  • the controller 59 may be composed of one device or a plurality of devices. When it is composed of a plurality of devices, one controller 59 is logically constructed by connecting them via a communication network such as the Internet or an intranet.
  • the controller 59 controls various operations of the collective punishment welding device 50.
  • the controller 59 controls the tubular body supply device 54, the chucker 55, the mold drive mechanism 56, the retainer drive mechanism 58, and the heater 63.
  • the controller 59 may include, for example, an HMI (Human Machine Interface), which is an interface for inputting / outputting information to / from an operator.
  • the controller 59 may communicate with at least one of a smart device, a server (cloud server), and the like.
  • the collective punishment welding method is a method of heat welding the upper collective punishment 1 to the ends of a predetermined number of tubular bodies 12a.
  • the collective punishment welding method is realized by the above-mentioned collective punishment welding device 50. Specifically, first, as shown in FIG. 13, a predetermined number of tubular bodies 12a are placed on the pallet 51 from the tubular body accumulating portion 52 in a state of being aligned by the tubular body supply device 54. ..
  • the retainer 57 is driven by the retainer drive mechanism 58, and the retainer 57 is moved in the X direction so as to approach the mold 60.
  • the upper end portion (end portion on the mold 60 side) of a predetermined number of tubular bodies 12a on the pallet 51 is inserted between the upper mold 61 and the lower mold 62.
  • the lower end surface is pushed in the X direction with the holding tool 57.
  • the pushed-in tubular body 12a is suppressed in the X direction so as not to move to the side away from the mold 60.
  • the upper end edge of the pushed tubular body 12a may be located at the same position as the edge of the mold 60 (see FIG. 16A), and the upper mold 61 and the lower mold 62 It may be located between them, or may slightly protrude from between the upper mold 61 and the lower mold 62 on the side away from the pallet 51.
  • the pair of arms 55a are brought close to each other in the Y direction.
  • the length from the tip of one arm 55a of the pair of arms 55a to the tip of the other arm 55a in the Y direction is longer than the opening 2a of the upper collective punishment 1.
  • a pair of arms 55a are appropriately moved along the Z-axis rail 55c and the X-axis rail 55d, and the pair of arms 55a are allowed to enter the inside of the base 2 of the upper collective punishment 1 integrated in the upper collective punishment accumulating portion 53 through the opening 2a. .. Then, as shown in FIG.
  • the pair of arms 55a are moved away from each other, and the pair of arms 55a are abutted (stretched) with respect to the inner surface of the side wall 2c of the base portion 2 along the Y direction. ).
  • the base 2 of the upper collective punishment 1 is gripped (grasping step).
  • the base portion 2 of the upper collective punishment 1 is appropriately gripped by the pair of arms 55a along the Z-axis rail 55c and the X-axis rail 55d.
  • the pair of arms 55a are movable, the gripped upper connecting seat 1 is moved to the mounting position, and the tubular portion 3 of the upper connecting seat 1 is inserted into the upper end portions of the plurality of tubular bodies 12a (insertion step).
  • the mold drive mechanism 56 moves the upper mold 61 and the lower mold 62 in the Z direction so as to approach each other.
  • the upper mold 61 and the lower mold 62 are heated to a predetermined temperature by the heater 63.
  • the tubular body 12a is in contact with the contact surface 61a of the upper mold 61, and the tubular body 12a is in contact with the contact surface 62a of the lower mold 62, but the upper mold 61 and the lower mold 62 are in contact with each other.
  • the upper mold 61 and the lower mold 62 are closest to each other in the Z direction, and a gap is formed between them.
  • the upper end portion of the tubular body 12a into which the upper connecting seat 1 is inserted is sandwiched by the contact surface 61a and the contact surface 62a while being heated and not too strong and not too strong. That is, the upper end portion of the tubular body 12a is held by the chucker 55 while the base portion 2 of the upper connecting seat 1 is gripped by the chucker 55, and the tubular portion 3 of the upper connecting seat 1 is inserted into the upper end portion of a predetermined number of tubular bodies 12a. Is heated while being pressurized by the mold 60 (pressurization heating step). As a result, the tubular portion 3 of the upper joint seat 1 and the upper end portion of the tubular body 12a are fixed by welding.
  • the upper mold 61 and the lower mold 62 are moved in the Z direction so as to be separated from each other by the mold drive mechanism 56. After that, for example, a tubular body 12a to which the upper joint 1 is welded is pulled out from the mold 60 by a robot arm or the like (not shown) and supplied to a subsequent device.
  • the upper ends of the plurality of tubular bodies 12a can be pressurized and heated by using the mold 60.
  • the contact surfaces 61a and 62a of the mold 60 have curved surfaces along the outer peripheral surface of the tubular body 12a. Therefore, for example, it is possible to suppress the bias of heating and pressurizing the upper end portion of the tubular body 12, and to heat and pressurize the upper end portion of the tubular body 12a in a manner suitable for the tubular body 12a.
  • the upper connecting seat 1 can be appropriately heat-welded to each of a predetermined number of tubular bodies 12a, and the welding strength between the tubular body 12a and the upper connecting seat 1 can be increased.
  • the tubular body 12a has a cylindrical shape.
  • the curved surfaces of the contact surfaces 61a and 62a in the mold 60 have an arc shape, and the radius rd of the arc shape is equal to or less than the outer radius rt of the tubular body 12a.
  • the upper end portion of the tubular body 12a can be heated and pressurized in a manner more suitable for the tubular body 12a.
  • the upper collective punishment 1 is formed of a material containing polystyrene. As a result, the upper joints 1 can be reliably heat-welded to the upper ends of the plurality of tubular bodies 12a.
  • the collective punishment welding device 50 further includes a chucker 55 that grips the base 2 of the upper collective punishment 1.
  • the chucker 55 can grip the base portion 2 which is a portion other than the portion to be pressurized and heated of the upper collective punishment 1. It is possible to suppress the influence of pressurization and heating on the gripping of the upper collective punishment 1.
  • the chucker 55 includes a pair of arms 55a.
  • the pair of arms 55a move away from each other along the longitudinal direction of the base 2 and abut against the inner surface of the base 2 along the longitudinal direction of the base 2 to grip the base 2. According to this configuration, the chucker 55 can concretely and effectively grip the base portion 2.
  • the mold 60 includes an upper mold 61, a lower mold 62, and a heater 63.
  • the surface of the upper mold 61 on the lower mold 62 side has a contact surface 61a
  • the surface of the lower mold 62 on the upper mold 61 side has a contact surface 62a.
  • the mold drive mechanism 56 drives the upper mold 61 and the lower mold 62 so as to approach and separate from each other. According to this configuration, the above-mentioned effect of heating and pressurizing the upper end portion of the tubular body 12a in a manner suitable for the tubular body 12a can be realized concretely and effectively.
  • the pair of arms 55a of the chucker 55 holding the base 2 of the upper collective punishment 1 is moved, and the upper collective punishment 1 is inserted into the upper ends of the plurality of tubular bodies 12a.
  • the pressurizing and heating step while the base 2 of the upper collective punishment 1 is gripped by the chucker 55, the upper end thereof is heated while being pressurized by the mold 60.
  • the chucker 55 can grip the base portion 2 which is a portion other than the portion to be pressurized and heated of the upper collective punishment 1. It is possible to suppress the influence of pressurization and heating on the gripping of the upper collective punishment 1. Further, since the upper end portion of the tubular body 12a can be heated and pressurized while the base portion 2 is gripped by the chucker 55, the upper end portion of the tubular body 12a can be heated and pressurized with high accuracy.
  • the heater 63 is provided in both the upper mold 61 and the lower mold 62, but a heater 63 may be provided in at least one of these.
  • One aspect of the present invention has been applied to, but is not limited to, the upper end of the upper joint 1 to the tubular body 12a.
  • One aspect of the present invention can be applied to the welding of the lower punishment 12c as long as the lower punishment 12c is attached to the lower end of the tubular body 12a by welding.
  • the shape of the tubular body 12a is not limited to a cylindrical shape and may be various tubular shapes.
  • the contact surfaces 61a and 62a are along the outer surfaces of the various tubular shapes. It suffices to have a curved surface.
  • the number (predetermined number) of tubular bodies 12a is not particularly limited.
  • the entire surface of the contact surfaces 61a and 62a of the mold 60 is a curved surface along the outer peripheral surface of the tubular body 12a, but at least a part of the contact surfaces 61a and 62a is the tubular body 12a.
  • both of the upper mold 61 and the lower mold 62 are driven in order to approach and separate from each other, but only one of them may be driven.
  • the mold 60 is divided into an upper mold 61 and a lower mold 62, but the mold 60 is not limited to such a plurality of divided molds 60.
  • the mold 60 may be configured such that the upper mold 61 and the lower mold 62 are integrally connected.
  • the contact surface of the mold 60 that comes into contact with the upper end of the tubular body 12a may have a circular curved surface along the outer peripheral surface of the tubular body 12a when viewed from the X direction.
  • the shape of the mold 60 is not limited, and various shapes may be used.
  • the positive electrode 10 and the lead storage battery 100 which are the targets of the collective punishment welding device 50 according to one aspect of the present invention, can be used for an electric vehicle.
  • electric vehicles include forklifts and golf carts.
  • each configuration of the above-described embodiment and the above-mentioned modification may be appropriately combined.
  • the present invention can be modified in various ways without departing from the gist thereof.

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Abstract

A linking-seat welding device 50 is a device for heat-welding an upper linking seat 1 to end sections of a plurality of cylindrical bodies 12a used in a positive electrode 10 and is provided with a mold 60. In a state in which the upper linking seat 1 is inserted in upper end sections of the plurality of cylindrical bodies 12a, the mold 60 heats the upper end sections while pressing the upper end sections. Abutting surfaces 61a, 62a abutting against the upper end sections of the plurality of cylindrical bodies 12a in the mold 60 have curved surfaces along external surfaces of the plurality of cylindrical bodies 12a.

Description

連座溶着装置及び連座溶着方法Collective punishment welding device and collective punishment welding method
　本発明の一側面は、連座溶着装置及び連座溶着方法に関する。 One aspect of the present invention relates to a collective punishment welding device and a collective punishment welding method.
　鉛蓄電池は、産業用又は民生用の二次電池として広く用いられており、特に、電気車用鉛蓄電池（いわゆるバッテリー）、又は、ＵＰＳ（Ｕｎｉｎｔｅｒｒｕｐｔｉｂｌｅ　Ｐｏｗｅｒ　Ｓｕｐｐｌｙ）、防災（非常）無線、電話等のバックアップ用鉛蓄電池の需要が多い。 Lead-acid batteries are widely used as secondary batteries for industrial or consumer use, and in particular, lead-acid batteries for electric vehicles (so-called batteries), UPS (Uninterruptible Power Supply), disaster prevention (emergency) radio, telephones, etc. There is a lot of demand for lead-acid batteries for backup.
　鉛蓄電池の電極は、例えば、複数の筒状体と、複数の筒状体のそれぞれに挿入された芯金と、複数の筒状体の内部に充填された鉛粉と、複数の筒状体の端部に取り付けられた連座と、を備える。このような電極に関して、例えば特許文献１には、複数の筒状体の端部のそれぞれに連座を挿入して熱溶着する技術が開示されている。 The electrodes of the lead-acid battery are, for example, a plurality of tubular bodies, a core metal inserted into each of the plurality of tubular bodies, lead powder filled inside the plurality of tubular bodies, and a plurality of tubular bodies. It is equipped with a series attached to the end of the. With respect to such an electrode, for example, Patent Document 1 discloses a technique of inserting a coupling into each of the end portions of a plurality of tubular bodies and performing heat welding.
特許第４３０５１９６号公報Japanese Patent No. 4305196
　上記従来技術では、例えば近年において鉛蓄電池の需要が高まる中、筒状体と連座との溶着強度を高めることが要求されている。 In the above-mentioned prior art, for example, as the demand for lead-acid batteries has increased in recent years, it is required to increase the welding strength between the tubular body and the joint.
　本発明の一側面は、筒状体と連座との溶着強度を高めることができる連座溶着装置及び連座溶着方法を提供することを目的とする。 One aspect of the present invention is to provide a collective punishment welding device and a collective punishment welding method capable of increasing the welding strength between a tubular body and a collective punishment.
　本発明の一側面に係る連座溶着装置は、電極に用いられる複数の筒状体の端部に連座を熱溶着する装置であって、複数の筒状体の端部に連座が挿入された状態で当該端部を加圧しながら加熱する金型を備え、金型において複数の筒状体の端部に当接する当接面は、複数の筒状体の外面に沿った曲面を有する。 The joint seat welding device according to one aspect of the present invention is a device that heat-welds the joint seats to the ends of a plurality of tubular bodies used for electrodes, and has the joint seats inserted into the ends of the plurality of tubular bodies. A mold for heating the end portion while pressurizing the mold is provided, and the contact surface of the mold that abuts on the end portions of the plurality of tubular bodies has a curved surface along the outer surface of the plurality of tubular bodies.
　この連座溶着装置では、金型を利用して、複数の筒状体の端部を加圧及び加熱することができる。そして、金型の当接面にあっては、複数の筒状体の外面に沿った曲面を有する。よって、例えば、筒状体の端部に対する加熱及び加圧の偏りを抑え、筒状体に適した態様で筒状体の端部の加熱及び加圧を行うことができる。複数の筒状体のそれぞれに連座を適切に熱溶着することができ、筒状体と連座との溶着強度を高めることが可能となる。 In this collective punishment welding device, the ends of a plurality of tubular bodies can be pressurized and heated by using a mold. The contact surface of the mold has a curved surface along the outer surface of the plurality of tubular bodies. Therefore, for example, it is possible to suppress the bias of heating and pressurizing the end portion of the tubular body, and to heat and pressurize the end portion of the tubular body in a manner suitable for the tubular body. The punishment can be appropriately heat-welded to each of the plurality of tubular bodies, and the welding strength between the tubular body and the punishment can be increased.
　本発明の一側面に係る連座溶着装置では、筒状体は、円筒状を呈し、筒状体の軸方向から見て、金型における当接面の曲面の形状は、円形状又は円弧形状を有し、曲面の円形状又は円弧形状の半径は、筒状体の外半径以下であってもよい。これにより、筒状体に一層適した態様で筒状体の端部の加熱及び加圧を行うことができる。 In the articulated welding device according to one aspect of the present invention, the tubular body has a cylindrical shape, and the curved surface of the contact surface in the mold has a circular shape or an arc shape when viewed from the axial direction of the tubular body. The radius of the circular or arc shape of the curved surface may be equal to or less than the outer radius of the tubular body. Thereby, the end portion of the tubular body can be heated and pressurized in a manner more suitable for the tubular body.
　本発明の一側面に係る連座溶着装置では、連座は、ポリスチレンを含む材料で形成されていてもよい。これにより、複数の筒状体の端部に連座を確実に熱溶着することができる。 In the collective punishment welding apparatus according to one aspect of the present invention, the collective punishment may be formed of a material containing polystyrene. As a result, the punishment can be reliably heat-welded to the ends of the plurality of tubular bodies.
　本発明の一側面に係る連座溶着装置では、連座は、長尺状の開口を有する有底箱状の基部と、基部の底面に設けられ複数の筒状体の端部のそれぞれに挿入される複数の筒部と、を含んでおり、連座の基部を把持する把持部材を更に備えていてもよい。この場合、把持部材により、連座の加圧及び加熱される部分以外の部分である基部を把持することができる。連座の把持にその加圧及び加熱による影響が及ぶのを抑制することが可能となる。 In the collective punishment welding device according to one aspect of the present invention, the collective punishment is inserted into each of a bottomed box-shaped base having a long opening and the ends of a plurality of tubular bodies provided on the bottom surface of the base. A gripping member that includes a plurality of tubular portions and grips the base portion of the collective punishment may be further provided. In this case, the gripping member can grip the base portion, which is a portion other than the portion to be pressurized and heated in the collective punishment. It is possible to suppress the influence of the pressurization and heating on the gripping of the collective punishment.
　本発明の一側面に係る連座溶着装置では、把持部材は、一対のアームを備え、一対のアームは、基部の長手方向に沿って互いに離れるように移動して、基部の内面に基部の長手方向に沿って突き当たることで、基部を把持してもよい。この構成によれば、把持部材による基部の把持を具体的に実現できる。 In the collective punishment welding device according to one aspect of the present invention, the gripping member includes a pair of arms, and the pair of arms move away from each other along the longitudinal direction of the base so as to be on the inner surface of the base in the longitudinal direction of the base. The base may be gripped by abutting along. According to this configuration, the gripping member can specifically grip the base.
　本発明の一側面に係る連座溶着装置では、金型は、協動して複数の筒状体を挟む上金型及び下金型と、上金型及び下金型の少なくとも何れかに設けられたヒータと、を含み、上金型における下金型側の面と下金型における上金型側の面とが、当接面を有し、上金型と下金型とを互いに接近及び離間するように駆動する駆動部を更に備えていてもよい。この構成によれば、筒状体に適した態様で筒状体の端部の加熱及び加圧を行い得る上記効果を、具体的に実現できる。 In the joint welding device according to one aspect of the present invention, the dies are provided in at least one of an upper mold and a lower mold that cooperate with each other to sandwich a plurality of tubular bodies, and an upper mold and a lower mold. The lower mold side surface of the upper mold and the upper mold side surface of the lower mold have contact surfaces, and the upper mold and the lower mold come close to each other. It may further include a drive unit that drives them apart. According to this configuration, the above-mentioned effect that the end portion of the tubular body can be heated and pressurized in a manner suitable for the tubular body can be concretely realized.
　本発明の一側面に係る連座溶着方法は、電極に用いられる複数の筒状体の端部に連座を熱溶着する方法であって、複数の筒状体の端部に連座を挿入する挿入工程と、複数の筒状体の端部に連座を挿入した状態で、当該端部を金型で加圧しながら加熱する加圧加熱工程と、を備え、金型において複数の筒状体の端部に当接する当接面は、複数の筒状体の外面に沿った曲面を有する。 The joint-seat welding method according to one aspect of the present invention is a method of heat-welding the joints to the ends of a plurality of tubular bodies used for electrodes, and is an insertion step of inserting the joints into the ends of the plurality of tubular bodies. A pressurizing and heating step of heating the ends while pressurizing the ends of the plurality of tubular bodies with the joint seats inserted into the ends of the plurality of tubular bodies is provided, and the ends of the plurality of tubular bodies are provided in the mold. The contact surface that comes into contact with the surface has a curved surface along the outer surface of the plurality of tubular bodies.
　この連座溶着方法では、金型を利用して、複数の筒状体の端部を加圧及び加熱することができる。そして、金型の当接面にあっては、複数の筒状体の外面に沿った曲面を有する。よって、例えば、筒状体の端部に対する加熱及び加圧の偏りを抑え、筒状体に適した態様で筒状体の端部の加熱及び加圧を行うことができる。複数の筒状体のそれぞれに連座を適切に熱溶着することができ、筒状体と連座との溶着強度を高めることが可能となる。 In this collective punishment welding method, the ends of a plurality of tubular bodies can be pressurized and heated by using a mold. The contact surface of the mold has a curved surface along the outer surface of the plurality of tubular bodies. Therefore, for example, it is possible to suppress the bias of heating and pressurizing the end portion of the tubular body, and to heat and pressurize the end portion of the tubular body in a manner suitable for the tubular body. The punishment can be appropriately heat-welded to each of the plurality of tubular bodies, and the welding strength between the tubular body and the punishment can be increased.
　本発明の一側面に係る連座溶着方法では、筒状体は、円筒状を呈し、筒状体の軸方向から見て、金型における当接面の曲面の形状は、円形状又は円弧形状を有し、曲面の円形状又は円弧形状の半径は、筒状体の外半径以下であってもよい。これにより、筒状体に一層適した態様で筒状体の端部の加熱及び加圧を行うことができる。 In the articulated welding method according to one aspect of the present invention, the tubular body has a cylindrical shape, and the curved surface of the contact surface in the mold has a circular shape or an arc shape when viewed from the axial direction of the tubular body. The radius of the circular or arc shape of the curved surface may be equal to or less than the outer radius of the tubular body. Thereby, the end portion of the tubular body can be heated and pressurized in a manner more suitable for the tubular body.
　本発明の一側面に係る連座溶着方法では、連座は、ポリスチレンを含む材料で形成されていてもよい。これにより、複数の筒状体の端部に連座を確実に熱溶着することができる。 In the collective punishment welding method according to one aspect of the present invention, the collective punishment may be formed of a material containing polystyrene. As a result, the punishment can be reliably heat-welded to the ends of the plurality of tubular bodies.
　本発明の一側面に係る連座溶着方法では、連座は、長尺状の開口を有する有底箱状の基部と、基部の底面に設けられ複数の筒状体の端部のそれぞれに挿入される複数の筒部と、を含んでおり、挿入工程の前に、連座の基部を把持部材で把持する把持工程を更に備え、挿入工程では、連座の基部を把持した把持部材を移動して、複数の筒状体の端部に連座を挿入し、加圧加熱工程では、連座の基部を把持部材で把持した状態で、当該端部を金型で加圧しながら加熱してもよい。この場合、把持部材により、連座の加圧及び加熱される部分以外の部分である基部を把持することができる。連座の把持にその加圧及び加熱による影響が及ぶのを抑制することが可能となる。また、基部を把持部材で把持した状態で筒状体の端部を加熱及び加圧できることから、筒状体の端部を精度よく加熱及び加圧することが可能となる。 In the collective punishment welding method according to one aspect of the present invention, the collective punishment is inserted into each of a bottomed box-shaped base having a long opening and the ends of a plurality of tubular bodies provided on the bottom surface of the base. A plurality of tubular portions are included, and a gripping step of gripping the base of the collective punishment with a gripping member is further provided before the insertion step. In the pressure heating step, the joint seat may be inserted into the end portion of the tubular body of the above, and the end portion may be heated while being pressed by a mold while the base portion of the joint seat is gripped by the gripping member. In this case, the gripping member can grip the base portion, which is a portion other than the portion to be pressurized and heated in the collective punishment. It is possible to suppress the influence of the pressurization and heating on the gripping of the collective punishment. Further, since the end portion of the tubular body can be heated and pressurized while the base portion is gripped by the gripping member, the end portion of the tubular body can be heated and pressurized with high accuracy.
　本発明の一側面によれば、筒状体と連座との溶着強度を高めることができる連座溶着装置及び連座溶着方法を提供することが可能となる。 According to one aspect of the present invention, it is possible to provide a collective punishment welding device and a collective punishment welding method capable of increasing the welding strength between the tubular body and the collective punishment.
図１は、実施形態に係る鉛蓄電池を模式的に示す断面図である。FIG. 1 is a cross-sectional view schematically showing a lead storage battery according to an embodiment. 図２は、図１のII－II線に沿う一部断面図である。FIG. 2 is a partial cross-sectional view taken along the line II-II of FIG. 図３は、図１の正極を示す斜視図である。FIG. 3 is a perspective view showing the positive electrode of FIG. 図４（ａ）は、図１の上部連座を示す平面図である。図４（ｂ）は、図１の上部連座を示す正面図である。FIG. 4A is a plan view showing the upper collective punishment of FIG. FIG. 4B is a front view showing the upper collective punishment of FIG. 図５は、図４（ａ）のＶ－Ｖ線に沿った断面の一部を示す図である。FIG. 5 is a diagram showing a part of a cross section taken along the line VV of FIG. 4A. 図６は、実施形態に係る連座溶着装置の概略構成を示すブロック図である。FIG. 6 is a block diagram showing a schematic configuration of a collective punishment welding device according to an embodiment. 図７は、図６のパレットを示す概略斜視図である。FIG. 7 is a schematic perspective view showing the pallet of FIG. 図８は、図６のチャッカーを示す概略正面図である。FIG. 8 is a schematic front view showing the chucker of FIG. 図９は、図６のチャッカーのアームを示す概略平面図である。FIG. 9 is a schematic plan view showing the chucker arm of FIG. 図１０（ａ）は、図６の金型を示す概略正面図である。図１０（ｂ）は、図６の金型を示す概略平面図である。FIG. 10A is a schematic front view showing the mold of FIG. FIG. 10B is a schematic plan view showing the mold of FIG. 図１１（ａ）は、図６の金型の当接面を示す正面図である。図１１（ｂ）は、図１の筒状体を軸方向から見たときの図である。FIG. 11A is a front view showing the contact surface of the mold of FIG. FIG. 11B is a view of the tubular body of FIG. 1 as viewed from the axial direction. 図１２は、図６の金型の周辺構成を示す概略平面図である。FIG. 12 is a schematic plan view showing the peripheral configuration of the mold of FIG. 図１３は、図１２においてパレットに筒状体が載置された状態を示す概略平面図である。FIG. 13 is a schematic plan view showing a state in which the tubular body is placed on the pallet in FIG. 図１４は、図１３において抑え具により筒状体が押し込まれた状態を示す概略平面図である。FIG. 14 is a schematic plan view showing a state in which the tubular body is pushed by the holding tool in FIG. 図１５（ａ）は、図６のチャッカーで上部連座を把持する例を説明する図である。図１５（ｂ）は、図１５（ａ）の続きを説明する図である。FIG. 15A is a diagram illustrating an example of gripping the upper collective punishment with the chucker of FIG. FIG. 15B is a diagram illustrating a continuation of FIG. 15A. 図１６（ａ）は、図６の金型で筒状体の上端部を加圧しながら加熱する例を説明する断面図である。図１６（ｂ）は、図１６（ａ）の続きを説明する断面図である。FIG. 16A is a cross-sectional view illustrating an example in which the upper end portion of the tubular body is heated while being pressurized by the mold of FIG. 16 (b) is a cross-sectional view illustrating the continuation of FIG. 16 (a). 図１７（ａ）は、図１６（ｂ）の続きを説明する断面図である。図１７（ｂ）は、図１７（ａ）の続きを説明する断面図である。FIG. 17A is a cross-sectional view illustrating the continuation of FIG. 16B. FIG. 17B is a cross-sectional view illustrating the continuation of FIG. 17A.
　以下、本発明の実施形態について、図面を参照して詳細に説明する。図面において、同一又は相当の要素には同じ符号を付し、重複する説明を省略する。各図における構成要素の大きさは概念的なものであり、構成要素間の大きさの相対的な関係は各図に示されたものに限定されない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding elements are designated by the same reference numerals, and duplicate description will be omitted. The sizes of the components in each figure are conceptual, and the relative size relationships between the components are not limited to those shown in each figure.
　実施形態に係る連座溶着装置及び連座溶着方法は、鉛蓄電池において電極に用いられる複数の筒状体の上端部（端部）に、上部連座（連座）を熱溶着する。そこでまず、鉛蓄電池について説明した後、上部連座について説明する。 In the collective punishment welding device and the collective punishment welding method according to the embodiment, the upper collective punishment (collective punishment) is heat-welded to the upper ends (ends) of a plurality of tubular bodies used for electrodes in a lead-acid battery. Therefore, first, the lead storage battery will be described, and then the upper collective punishment will be described.
　図１は、鉛蓄電池１００を模式的に示す断面図である。図２は、図１のII－II線に沿う一部断面図である。図３は、正極１０を示す斜視図である。図１では、図面の手前側から奥側にかけて、セパレータ３０を介して正極１０及び負極２０が交互に配置されている。図１では、正極１０の一部を断面化して示している。図２は、鉛蓄電池１００を上方から見た際の正極１０、負極２０及びセパレータ３０の積層構造を示している。なお、「上」及び「下」の語は、鉛直方向の上方及び下方に対応する（以下、同じ）。Ｚ方向は上下方向に対応し、Ｘ方向はＺ方向と直交する方向に対応し、Ｙ方向はＺ方向と直交し且つＸ方向と直交する方向に対応する。 FIG. 1 is a cross-sectional view schematically showing the lead storage battery 100. FIG. 2 is a partial cross-sectional view taken along the line II-II of FIG. FIG. 3 is a perspective view showing the positive electrode 10. In FIG. 1, the positive electrode 10 and the negative electrode 20 are alternately arranged via the separator 30 from the front side to the back side of the drawing. In FIG. 1, a part of the positive electrode 10 is shown in cross section. FIG. 2 shows a laminated structure of a positive electrode 10, a negative electrode 20, and a separator 30 when the lead-acid battery 100 is viewed from above. The terms "upper" and "lower" correspond to the upper and lower parts in the vertical direction (hereinafter, the same applies). The Z direction corresponds to the vertical direction, the X direction corresponds to the direction orthogonal to the Z direction, and the Y direction corresponds to the direction orthogonal to the Z direction and orthogonal to the X direction.
　図１及び図２に示されるように、実施形態に係る鉛蓄電池１００は、電極群１１０と、電極群１１０を収容する電槽１２０と、電極群１１０に接続された連結部材１３０ａ，１３０ｂと、連結部材１３０ａ，１３０ｂに接続された極柱１４０ａ，１４０ｂと、電槽１２０の注液口を閉塞する液口栓１５０と、電槽１２０に接続された支持部材１６０と、を備える。 As shown in FIGS. 1 and 2, the lead-acid battery 100 according to the embodiment includes an electrode group 110, an electric tank 120 accommodating the electrode group 110, and connecting members 130a and 130b connected to the electrode group 110. It includes pole columns 140a and 140b connected to the connecting members 130a and 130b, a liquid spout 150 for closing the liquid injection port of the electric tank 120, and a support member 160 connected to the electric tank 120.
　電極群１１０は、複数の正極１０と、複数の負極２０と、複数のセパレータ３０とを備える。正極１０及び負極２０は、セパレータ３０を介して交互に配置されている。セパレータ３０間における正極１０の周囲の空間には、電解液４０が充填されている。図１、図２及び図３に示されるように、正極１０は、例えば、板状の電極である。正極１０は、複数の筒状体１２ａと、複数の芯金（集電体）１４と、正極材（電極材）１６と、下部連座１２ｃと、上部連座（連座）１と、耳部１２ｄと、を有する。 The electrode group 110 includes a plurality of positive electrodes 10, a plurality of negative electrodes 20, and a plurality of separators 30. The positive electrode 10 and the negative electrode 20 are alternately arranged via the separator 30. The space around the positive electrode 10 between the separators 30 is filled with the electrolytic solution 40. As shown in FIGS. 1, 2 and 3, the positive electrode 10 is, for example, a plate-shaped electrode. The positive electrode 10 includes a plurality of tubular bodies 12a, a plurality of core metal (current collector) 14, a positive electrode material (electrode material) 16, a lower collective punishment 12c, an upper collective punishment (collective punishment) 1, and an ear portion 12d. , Have.
　複数の筒状体１２ａは、その軸方向（以下、単に「軸方向」ともいう）と直交する方向に沿って、隣接して一列に並設されている。ここでは、所定数の筒状体１２ａが並設されている。複数の筒状体１２ａは、活物質保持用チューブ（クラッドチューブ）群を構成する。筒状体１２ａにおける軸方向に垂直な断面の外形形状は、円形であるが、楕円形、角丸四角形等であってもよい。筒状体１２ａは、多孔質体で形成されている。筒状体１２ａは、例えば、織布、不織布等の基材で形成されていてもよい。基材の材料としては、耐酸性を有する材料を用いることができる。基材の材料としては、ポリオレフィン（ポリプロピレン、ポリエチレン等）、ポリエチレンテレフタレート（ＰＥＴ）、ポリスチレン（ＰＳ）、ポリ塩化ビニル（ＰＶＣ）、ポリ塩化ビニリデン（ＰＶＤＣ）、ポリフッ化ビニリデン（ＰＶＤＦ）、ポリカーボネート（ＰＣ）等の樹脂、ガラス繊維、炭化ケイ素、アルミナ等の無機材料が挙げられる。筒状体１２ａは、サイクル特性を向上させやすい観点から、熱可塑性樹脂を含むことが好ましく、ポリオレフィンを含むことがより好ましい。 A plurality of tubular bodies 12a are arranged side by side in a row adjacent to each other along a direction orthogonal to the axial direction (hereinafter, also simply referred to as "axial direction"). Here, a predetermined number of tubular bodies 12a are arranged side by side. The plurality of tubular bodies 12a form a group of active material holding tubes (clad tubes). The outer shape of the tubular body 12a having a cross section perpendicular to the axial direction is circular, but may be elliptical, rounded quadrangle, or the like. The tubular body 12a is formed of a porous body. The tubular body 12a may be formed of, for example, a base material such as a woven fabric or a non-woven fabric. As the material of the base material, a material having acid resistance can be used. Materials for the base material include polyolefin (polypropylene, polyethylene, etc.), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), polycarbonate (PC). ) And other resins, glass fibers, silicon carbide, alumina and other inorganic materials. The tubular body 12a preferably contains a thermoplastic resin, and more preferably polyolefin, from the viewpoint of easily improving the cycle characteristics.
　筒状体１２ａでは、基材上に樹脂が保持されていてもよい。樹脂としては、アクリル樹脂、エポキシ樹脂、フェノール樹脂、メラミン樹脂、スチレン樹脂等が挙げられる。樹脂は、基材の内表面上若しくは外表面上、又は、基材における細孔内の表面上に保持されていてもよく、基材上に付着していてもよい。樹脂は、基材上の一部に保持されていてもよく、基材上の全部に保持されていてもよい。筒状体１２ａでは、上部連座１が挿入される上端部において、基材上にスチレンポリマーが保持されている。 In the tubular body 12a, the resin may be held on the base material. Examples of the resin include acrylic resin, epoxy resin, phenol resin, melamine resin, styrene resin and the like. The resin may be held on the inner surface or outer surface of the base material, or on the surface in the pores of the base material, or may be attached to the base material. The resin may be held on a part of the base material or may be held on the entire base material. In the tubular body 12a, the styrene polymer is held on the base material at the upper end portion where the upper joint 1 is inserted.
　芯金１４は、各筒状体１２ａに挿入されている。芯金１４は、棒状を呈する。芯金１４は、筒状体１２ａの内部において軸方向に沿って延びている。芯金１４の構成材料としては、導電性材料であればよく、例えば、鉛－カルシウム－錫系合金、鉛－アンチモン－ヒ素系合金等の鉛合金が挙げられる。鉛合金は、セレン、銀、ビスマス等を含んでいてもよい。 The core metal 14 is inserted into each tubular body 12a. The core metal 14 has a rod shape. The core metal 14 extends along the axial direction inside the tubular body 12a. The constituent material of the core metal 14 may be any conductive material, and examples thereof include lead alloys such as lead-calcium-tin alloys and lead-antimony-arsenic alloys. The lead alloy may contain selenium, silver, bismuth and the like.
　正極材１６は、筒状体１２ａの内部に充填されている。正極材１６は、活物質を含む。筒状体１２ａ、芯金１４及び正極材１６は、筒状電極（棒状電極）を構成する。正極１０の筒状電極は、上部連座１、耳部１２ｄ及び連結部材１３０ａを介して極柱１４０ａに電気的に接続されている。 The positive electrode material 16 is filled inside the tubular body 12a. The positive electrode material 16 contains an active material. The tubular body 12a, the core metal 14, and the positive electrode material 16 form a tubular electrode (rod-shaped electrode). The tubular electrode of the positive electrode 10 is electrically connected to the pole pillar 140a via the upper connecting seat 1, the selvage portion 12d, and the connecting member 130a.
　下部連座１２ｃは、複数の筒状体１２ａにおける電槽１２０の底側の端部（筒状体１２ａの一端側の末端部分）である下端部に取り付けられている。下部連座１２ｃは、複数の筒状体１２ａの下端部を封止する。下部連座１２ｃは、複数の筒状体１２ａの下端部に嵌合されている。なお、熱硬化性の接着剤等により、下部連座１２ｃが複数の筒状体１２ａの下端部に固着されていてもよい。 The lower connecting seat 12c is attached to the lower end portion of the plurality of tubular bodies 12a, which is the bottom end portion of the electric tank 120 (the end portion on one end side of the tubular body 12a). The lower joint 12c seals the lower ends of the plurality of tubular bodies 12a. The lower joint 12c is fitted to the lower ends of the plurality of tubular bodies 12a. The lower joint 12c may be fixed to the lower ends of the plurality of tubular bodies 12a by a thermosetting adhesive or the like.
　上部連座１は、筒状体１２ａにおける電槽１２０の頂部側の端部（筒状体１２ａの他端側の末端部分）である上端部に取り付けられている。上部連座１は、溶着により筒状体１２ａの上端部に固着されている。上部連座１と筒状体１２ａとの溶着では、これらの境界部分が一体化していてもよい。溶着について、詳細は後述する。 The upper joint seat 1 is attached to the upper end portion of the tubular body 12a, which is the end portion on the top side of the electric tank 120 (the end portion on the other end side of the tubular body 12a). The upper joint seat 1 is fixed to the upper end portion of the tubular body 12a by welding. In the welding of the upper joint 1 and the tubular body 12a, the boundary portions thereof may be integrated. The details of welding will be described later.
　下部連座１２ｃ及び上部連座１は、筒状体１２ａと、筒状体１２ａ内に配置された芯金１４及び正極材１６と、に接する。下部連座１２ｃ及び上部連座１は、筒状体１２ａと芯金１４と正極材１６とを保持する。耳部１２ｄの一端は、上部連座１に接続されている。耳部１２ｄの他端は、連結部材１３０ａに接続されている。 The lower connecting seat 12c and the upper connecting seat 1 are in contact with the tubular body 12a and the core metal 14 and the positive electrode material 16 arranged in the tubular body 12a. The lower joint 12c and the upper joint 1 hold the tubular body 12a, the core metal 14, and the positive electrode material 16. One end of the selvage 12d is connected to the upper collective punishment 1. The other end of the ear portion 12d is connected to the connecting member 130a.
　図１及び図２に示されるように、負極２０は、例えば板状の電極である。負極２０は、例えばペースト式負極板である。負極２０は、連結部材１３０ｂを介して極柱１４０ｂに電気的に接続されている。負極２０は、負極集電体と、当該負極集電体に保持された電極材である負極材と、を有する。負極集電体としては、板状の集電体を用いることができる。負極材は、活物質を含む。 As shown in FIGS. 1 and 2, the negative electrode 20 is, for example, a plate-shaped electrode. The negative electrode 20 is, for example, a paste type negative electrode plate. The negative electrode 20 is electrically connected to the pole pillar 140b via the connecting member 130b. The negative electrode 20 has a negative electrode current collector and a negative electrode material which is an electrode material held by the negative electrode current collector. As the negative electrode current collector, a plate-shaped current collector can be used. The negative electrode material contains an active material.
　支持部材１６０は、電槽１２０の底面に配置され、下部連座１２ｃを支持する。支持部材１６０は、上方に突出する複数の突条１６０ａを有する。突条１６０ａは、下部連座１２ｃに当接する（図１参照）。すなわち、支持部材１６０は、下部連座１２ｃにおける電槽１２０の底面側の部分を各突条１６０ａによって支持している。 The support member 160 is arranged on the bottom surface of the electric tank 120 and supports the lower collective punishment 12c. The support member 160 has a plurality of ridges 160a protruding upward. The ridge 160a abuts on the lower joint 12c (see FIG. 1). That is, the support member 160 supports the bottom surface side portion of the electric tank 120 in the lower collective punishment 12c by each ridge 160a.
　図４（ａ）は、上部連座１を示す平面図である。図４（ｂ）は、上部連座１を示す正面図である。図５は、図４（ａ）のＶ－Ｖ線に沿った断面の一部を示す図である。図４（ａ）、図４（ｂ）及び図５に示されるように、上部連座１は、長尺状の開口２ａを有する有底箱状の基部２と、基部２の底面２ｂに設けられた複数の筒部３と、を含む。 FIG. 4A is a plan view showing the upper collective punishment 1. FIG. 4B is a front view showing the upper collective punishment 1. FIG. 5 is a diagram showing a part of a cross section taken along the line VV of FIG. 4A. As shown in FIGS. 4 (a), 4 (b) and 5, the upper joint 1 is provided on a bottomed box-shaped base 2 having a long opening 2a and a bottom surface 2b of the base 2. Also includes a plurality of tubular portions 3.
　基部２は、筒状体１２ａの上端に当接する。基部２は、長手方向に対向する一対の側壁２ｃと、短手方向に対向する一対の側壁２ｄと、を有する。一対の側壁２ｃは、平面視において、長手方向の外側に膨らむ円弧形状となるように屈曲する。一対の側壁２ｄは、平面視において、互いに平行な直線状に延びる。 The base 2 abuts on the upper end of the tubular body 12a. The base 2 has a pair of side walls 2c facing in the longitudinal direction and a pair of side walls 2d facing in the lateral direction. The pair of side walls 2c are bent so as to have an arc shape that bulges outward in the longitudinal direction in a plan view. The pair of side walls 2d extend in a straight line parallel to each other in a plan view.
　筒部３は、複数の筒状体１２ａの数に対応する所定数だけ設けられている。筒部３は、筒状体１２ａの内径に対応する外径を有する円筒状を呈する。筒部３は、複数の筒状体１２ａの上端部のそれぞれに挿入される。筒部３は、その筒孔３ａが基部２の内部と連通する。筒部３の外周面は、基部２から離れるに連れて拡径するように傾斜した後、先端部で先細りとなるように傾斜している。 A predetermined number of tubular portions 3 are provided corresponding to the number of the plurality of tubular bodies 12a. The tubular portion 3 has a cylindrical shape having an outer diameter corresponding to the inner diameter of the tubular body 12a. The tubular portion 3 is inserted into each of the upper end portions of the plurality of tubular bodies 12a. The tubular portion 3 has a tubular hole 3a that communicates with the inside of the base portion 2. The outer peripheral surface of the tubular portion 3 is inclined so as to increase in diameter as the distance from the base portion 2 is increased, and then is inclined so as to be tapered at the tip portion.
　上部連座１は、ポリスチレンを含む材料で形成されている。なお、上部連座１の材料としては、特に限定されない。例えば上部連座１の材料として、耐酸性を有する材料を用いることができる。上部連座１の材料としては、ポリオレフィン（ポリプロピレン、ポリエチレン等）、ポリエチレンテレフタレート（ＰＥＴ）、ポリスチレン（ＰＳ）、ポリフッ化ビニリデン（ＰＶＤＦ）、ポリカーボネート（ＰＣ）等の樹脂などが挙げられる。 The upper collective punishment 1 is made of a material containing polystyrene. The material of the upper collective punishment 1 is not particularly limited. For example, as the material of the upper collective punishment 1, a material having acid resistance can be used. Examples of the material of the upper junction 1 include resins such as polyolefin (polypropylene, polyethylene, etc.), polyethylene terephthalate (PET), polystyrene (PS), polyvinylidene fluoride (PVDF), polycarbonate (PC), and the like.
　次に、実施形態に係る連座溶着装置について説明する。 Next, the collective punishment welding device according to the embodiment will be described.
　図６は、連座溶着装置５０の概略構成を示すブロック図である。図６に示されるように、連座溶着装置５０は、筒状体１２ａの上端部に上部連座１を熱溶着する装置である。連座溶着装置５０は、パレット５１、筒状体集積部５２、上部連座集積部５３、筒状体供給装置５４、チャッカー（把持部材）５５、金型６０、金型駆動機構（駆動部）５６、抑え具５７、抑え具駆動機構５８及びコントローラ５９を備える。 FIG. 6 is a block diagram showing a schematic configuration of the collective punishment welding device 50. As shown in FIG. 6, the collective punishment welding device 50 is a device that heat-welds the upper collective punishment 1 to the upper end of the tubular body 12a. The collective punishment welding device 50 includes a pallet 51, a tubular body accumulating portion 52, an upper multi-seat accumulating portion 53, a tubular body supply device 54, a chucker (grasping member) 55, a mold 60, a mold driving mechanism (driving unit) 56, and the like. The presser 57, the presser drive mechanism 58, and the controller 59 are provided.
　図７は、パレット５１を示す概略斜視図である。図６及び図７に示されるように、パレット５１は、複数の筒状体１２ａを載置する載置台である。パレット５１には、軸方向をＸ方向とする複数の筒状体１２ａが、Ｙ方向に整列した状態で載置される。図示する例では、パレット５１の上面には、筒状体１２ａの外周面に沿った浅いＵ字形の溝５１ａが、所定数設けられている。パレット５１は、例えばフレームに固定されている。パレット５１としては特に限定されず、複数の筒状体１２ａを整列して載置できれば、種々の公知のパレットを用いることができる。 FIG. 7 is a schematic perspective view showing the pallet 51. As shown in FIGS. 6 and 7, the pallet 51 is a mounting table on which a plurality of tubular bodies 12a are placed. A plurality of tubular bodies 12a whose axial direction is the X direction are placed on the pallet 51 in a state of being aligned in the Y direction. In the illustrated example, a predetermined number of shallow U-shaped grooves 51a along the outer peripheral surface of the tubular body 12a are provided on the upper surface of the pallet 51. The pallet 51 is fixed to the frame, for example. The pallet 51 is not particularly limited, and various known pallets can be used as long as a plurality of tubular bodies 12a can be arranged and placed.
　図６に戻り、筒状体集積部５２は、外部から供給された複数の筒状体１２ａを集積する。筒状体集積部５２としては特に限定されず、例えば集積ボックスなどの種々の公知の集積部を用いることができる。 Returning to FIG. 6, the tubular body accumulating portion 52 accumulates a plurality of tubular bodies 12a supplied from the outside. The tubular body accumulation portion 52 is not particularly limited, and various known accumulation portions such as an accumulation box can be used.
　上部連座集積部５３は、外部から供給された複数の上部連座１を集積する。ここでの上部連座集積部５３では、複数の上部連座１が長手方向をＹ方向にしてＺ方向に積み上げられている。また、上部連座集積部５３では、複数の上部連座１が、筒部３の軸方向をＸ方向にして積み上げられている。さらにまた、上部連座集積部５３では、パレット５１に載置された所定数の筒状体１２ａの上端部に上部連座１が取り付けられた場合の当該上部連座１の位置（以下、単に「取付位置」ともいう）に対してＹ方向の位置が等しくなるように、複数の上部連座１が積み上げられている、つまり、上部連座集積部５３に集積された上部連座１は、Ｙ方向へは動かさずに取付位置まで移動可能である。上部連座集積部５３としては特に限定されず、例えば集積棚などの種々の公知の集積部を用いることができる。 The upper collective punishment accumulation unit 53 accumulates a plurality of upper collective punishments 1 supplied from the outside. In the upper collective punishment accumulation portion 53 here, a plurality of upper collective punishments 1 are stacked in the Z direction with the longitudinal direction in the Y direction. Further, in the upper collective punishment accumulation portion 53, a plurality of upper collective punishments 1 are stacked with the axial direction of the tubular portion 3 in the X direction. Furthermore, in the upper collective punishment accumulation portion 53, the position of the upper collective punishment 1 when the upper collective punishment 1 is attached to the upper end of a predetermined number of tubular bodies 12a mounted on the pallet 51 (hereinafter, simply "attachment position"). A plurality of upper collective punishments 1 are stacked so that the positions in the Y direction are equal to each other, that is, the upper collective punishments 1 integrated in the upper collective punishment accumulation portion 53 do not move in the Y direction. It can be moved to the mounting position. The upper collective punishment accumulation portion 53 is not particularly limited, and various known accumulation portions such as an accumulation shelf can be used.
　筒状体供給装置５４は、筒状体集積部５２からパレット５１へ複数の筒状体１２ａを供給する装置である。筒状体供給装置５４は、筒状体集積部５２に集積された複数の筒状体１２ａのうちの所定数の筒状体１２ａを、パレット５１上に整列して載置させる。筒状体供給装置５４としては特に限定されず、種々の公知の供給装置を用いることができる。例えば筒状体供給装置５４は、所定数の筒状体１２ａを筒状体集積部５２からパレット５１へ供給するためのロボットアーム及びコンベアなどの少なくとも何れかを含んでいてもよい。筒状体供給装置５４は、コントローラ５９に接続されており、その動作がコントローラ５９により制御される。 The tubular body supply device 54 is a device that supplies a plurality of tubular bodies 12a from the tubular body accumulating portion 52 to the pallet 51. The tubular body supply device 54 arranges and places a predetermined number of tubular bodies 12a out of a plurality of tubular bodies 12a accumulated in the tubular body accumulating portion 52 on the pallet 51. The tubular body supply device 54 is not particularly limited, and various known supply devices can be used. For example, the tubular body supply device 54 may include at least one of a robot arm and a conveyor for supplying a predetermined number of tubular bodies 12a from the tubular body accumulating portion 52 to the pallet 51. The tubular body supply device 54 is connected to the controller 59, and its operation is controlled by the controller 59.
　図８は、チャッカー５５を示す概略正面図である。図９は、チャッカー５５のアーム５５ａを示す概略平面図である。図８及び図９に示されるように、チャッカー５５は、上部連座１の基部２を把持する。また、チャッカー５５は、把持した上部連座１を取付位置まで移動させ、複数の筒状体１２ａの上端部に上部連座１を挿入する。チャッカー５５は、一対のアーム５５ａ、アームホルダ５５ｂ、Ｚ軸レール５５ｃ、及びＸ軸レール５５ｄを有する。 FIG. 8 is a schematic front view showing the chucker 55. FIG. 9 is a schematic plan view showing the arm 55a of the chucker 55. As shown in FIGS. 8 and 9, the chucker 55 grips the base 2 of the upper punishment 1. Further, the chucker 55 moves the gripped upper connecting seat 1 to the mounting position, and inserts the upper connecting seat 1 into the upper end portions of the plurality of tubular bodies 12a. The chucker 55 has a pair of arms 55a, an arm holder 55b, a Z-axis rail 55c, and an X-axis rail 55d.
　一対のアーム５５ａは、平面視でＬ字状に延びる部材であって、Ｘ方向に延びた後に互いに離れるようにＹ方向に延びる。一対のアーム５５ａは、互いに離れるように移動して、上部連座１の基部２の側壁２ｃの内面に対して基部２の長手方向に沿って突き当たる（突っ張る）ことで、基部２を把持する（図１５参照、詳しくは後述）。アームホルダ５５ｂは、一対のアーム５５ａをＹ方向に移動可能に保持する。Ｚ軸レール５５ｃは、Ｚ方向に延在するレールを含んで構成されている。Ｚ軸レール５５ｃは、アームホルダ５５ｂをＺ方向に移動可能に支持する。Ｘ軸レール５５ｄは、Ｘ方向に延在するレールを含んで構成されている。Ｘ軸レール５５ｄは、Ｚ軸レール５５ｃをＸ方向に移動可能に支持する。 The pair of arms 55a are members that extend in an L shape in a plan view, and after extending in the X direction, extend in the Y direction so as to separate from each other. The pair of arms 55a move away from each other and abut (push) the inner surface of the side wall 2c of the base 2 of the upper collective punishment 1 along the longitudinal direction of the base 2 to grip the base 2 (FIG. See 15, details below). The arm holder 55b holds the pair of arms 55a so as to be movable in the Y direction. The Z-axis rail 55c is configured to include a rail extending in the Z direction. The Z-axis rail 55c supports the arm holder 55b so as to be movable in the Z direction. The X-axis rail 55d is configured to include a rail extending in the X direction. The X-axis rail 55d supports the Z-axis rail 55c so as to be movable in the X direction.
　このようなチャッカー５５においては、上部連座集積部５３から１つの上部連座１の基部２を一対のアーム５５ａで把持すると共に、Ｚ軸レール５５ｃ及びＸ軸レール５５ｄにより当該一対のアーム５５ａを取付位置まで移動させ、上部連座１の筒部３を筒状体１２ａの上端部に挿入させる。チャッカー５５は、コントローラ５９に接続されており、その動作がコントローラ５９により制御される。 In such a chucker 55, the base 2 of one upper collective punishment 1 is gripped by the pair of arms 55a from the upper collective punishment accumulation portion 53, and the pair of arms 55a is attached by the Z-axis rail 55c and the X-axis rail 55d. The tubular portion 3 of the upper joint seat 1 is inserted into the upper end portion of the tubular body 12a. The chucker 55 is connected to the controller 59, and its operation is controlled by the controller 59.
　図１０（ａ）は、金型６０を示す概略正面図である。図１０（ｂ）は、金型６０を示す概略平面図である。図１１（ａ）は、金型６０の当接面６１ａ，６２ａを示す正面図である。図１１（ｂ）は、筒状体１２ａを軸方向から見たときの図である。図１０（ａ）及び図１０（ｂ）に示されるように、金型６０は、複数の筒状体１２ａの上端部に上部連座１が挿入された状態で当該上端部を加圧しながら加熱する部材である。金型６０は、上金型６１、下金型６２及びヒータ６３を有する。 FIG. 10A is a schematic front view showing the mold 60. FIG. 10B is a schematic plan view showing the mold 60. FIG. 11A is a front view showing the contact surfaces 61a and 62a of the mold 60. FIG. 11B is a view of the tubular body 12a as viewed from the axial direction. As shown in FIGS. 10 (a) and 10 (b), the mold 60 is heated while pressurizing the upper end portion of the plurality of tubular bodies 12a with the upper joint 1 inserted in the upper end portion. It is a member. The mold 60 has an upper mold 61, a lower mold 62, and a heater 63.
　上金型６１及び下金型６２は、協動して所定数の筒状体１２ａの上端部を挟む。上金型６１及び下金型６２は、Ｙ方向を長手方向とする長尺状の形状を呈し、ここでは、矩形棒状を呈する。上金型６１及び下金型６２は、Ｚ方向に対向するように配置されている。上金型６１及び下金型６２は、パレット５１のＸ方向の一方側に隣接して配置されている（図１２参照）。上金型６１及び下金型６２は、例えば真鍮により形成されている。 The upper mold 61 and the lower mold 62 cooperate to sandwich the upper end portion of a predetermined number of tubular bodies 12a. The upper mold 61 and the lower mold 62 have an elongated shape with the Y direction as the longitudinal direction, and here, have a rectangular rod shape. The upper mold 61 and the lower mold 62 are arranged so as to face each other in the Z direction. The upper mold 61 and the lower mold 62 are arranged adjacent to one side of the pallet 51 in the X direction (see FIG. 12). The upper mold 61 and the lower mold 62 are made of, for example, brass.
　上金型６１における下金型６２側の面は、所定数の筒状体１２ａの上端部に当接する当接面６１ａを有する。下金型６２における上金型６１側の面は、所定数の筒状体１２ａの上端部に当接する当接面６２ａを有する。当接面６１ａ，６２ａは、筒状体１２ａの外周面に沿った（倣った）曲面である。例えば当接面６１ａ，６２ａは、Ｙ方向においてパレット５１の溝５１ａに対応する位置に設けられている（図１２参照）。上金型６１及び下金型６２は、金型駆動機構５６の駆動によって互いに接近及び離間（開閉動作）するように構成されている。 The surface of the upper mold 61 on the lower mold 62 side has a contact surface 61a that abuts on the upper ends of a predetermined number of tubular bodies 12a. The surface of the lower mold 62 on the upper mold 61 side has a contact surface 62a that abuts on the upper end portion of a predetermined number of tubular bodies 12a. The contact surfaces 61a and 62a are curved surfaces along (following) the outer peripheral surface of the tubular body 12a. For example, the contact surfaces 61a and 62a are provided at positions corresponding to the grooves 51a of the pallet 51 in the Y direction (see FIG. 12). The upper mold 61 and the lower mold 62 are configured to approach and separate from each other (open / close operation) by driving the mold driving mechanism 56.
　ヒータ６３は、上金型６１及び下金型６２のそれぞれの内部に設けられている。ヒータ６３は、上金型６１及び下金型６２を加熱する。ヒータ６３は、コントローラ５９に接続されており、加熱温度及びＯＮ／ＯＦＦがコントローラ５９により制御される。ヒータ６３としては特に限定されず、種々の公知のヒータを用いることができる。 The heater 63 is provided inside each of the upper mold 61 and the lower mold 62. The heater 63 heats the upper mold 61 and the lower mold 62. The heater 63 is connected to the controller 59, and the heating temperature and ON / OFF are controlled by the controller 59. The heater 63 is not particularly limited, and various known heaters can be used.
　このような金型６０においては、例えば、上部連座１が挿入された筒状体１２ａの上端部が下金型６２の当接面６２ａに載置されている状態で、金型駆動機構５６により上金型６１と下金型６２とが接近するようにＺ方向に可動する。このとき、ヒータ６３によって上金型６１及び下金型６２は所定温度まで加熱されている。これにより、上部連座１が挿入された筒状体１２ａの上端部は、加熱されながら当接面６１ａと当接面６２ａとで強く挟み込まれる（締め付けられる）。なお、上金型６１と下金型６２とは、互いに当接するまでＺ方向に接近しておらず、上金型６１と下金型６２とがＺ方向に最も接近した状態では、これらの間に隙間が形成されている。 In such a mold 60, for example, in a state where the upper end portion of the tubular body 12a into which the upper connecting seat 1 is inserted is placed on the contact surface 62a of the lower mold 62, the mold driving mechanism 56 The upper mold 61 and the lower mold 62 are movable in the Z direction so as to approach each other. At this time, the upper mold 61 and the lower mold 62 are heated to a predetermined temperature by the heater 63. As a result, the upper end portion of the tubular body 12a into which the upper connecting seat 1 is inserted is strongly sandwiched (tightened) between the abutting surface 61a and the abutting surface 62a while being heated. The upper mold 61 and the lower mold 62 are not close to each other in the Z direction until they come into contact with each other, and when the upper mold 61 and the lower mold 62 are closest to each other in the Z direction, between them. A gap is formed in.
　図１１（ａ）及び図１１（ｂ）に示されるように、Ｘ方向から見て、上金型６１の当接面６１ａの曲面の形状は、筒状体１２ａの外周面に沿った形状であって、円弧形状である。Ｘ方向から見て、下金型６２の当接面６２ａの曲面の形状は、筒状体１２ａの外周面に沿った形状であって、当接面６１ａの曲面の形状と等しい円弧形状である。当接面６１ａの曲面の円弧形状の半径ｒｄは、筒状体の外半径ｒｔ以下である。当接面６２ａの曲面の円弧形状の半径についても、同様に外半径ｒｔ以下である。 As shown in FIGS. 11A and 11B, the curved surface of the contact surface 61a of the upper mold 61 is formed along the outer peripheral surface of the tubular body 12a when viewed from the X direction. It has an arc shape. When viewed from the X direction, the shape of the curved surface of the contact surface 62a of the lower mold 62 is a shape along the outer peripheral surface of the tubular body 12a and is an arc shape equal to the shape of the curved surface of the contact surface 61a. .. The radius rd of the arc shape of the curved surface of the contact surface 61a is equal to or less than the outer radius rt of the tubular body. Similarly, the radius of the arc shape of the curved surface of the contact surface 62a is equal to or less than the outer radius rt.
　金型駆動機構５６は、上金型６１と下金型６２とを互いに接近及び離間するように駆動する機構である。金型駆動機構５６は、例えばエアシリンダを含んでいる。金型駆動機構５６は、コントローラ５９に接続されており、その動作がコントローラ５９により制御される。金型駆動機構５６としては特に限定されず、種々の公知の駆動機構を用いることができる。 The mold drive mechanism 56 is a mechanism that drives the upper mold 61 and the lower mold 62 so as to approach and separate from each other. The mold drive mechanism 56 includes, for example, an air cylinder. The mold drive mechanism 56 is connected to the controller 59, and its operation is controlled by the controller 59. The mold drive mechanism 56 is not particularly limited, and various known drive mechanisms can be used.
　図１２は、金型６０の周辺構成を示す概略平面図である。図１３は、図１２においてパレット５１に筒状体１２ａが載置された状態を示す概略平面図である。図１４は、図１３において抑え具５７により筒状体１２ａが押し込まれた状態を示す概略平面図である。図１３及び図１４に示される筒状体１２ａでは、図示左側が上端側に対応し、図示右側が下端側に対応する。 FIG. 12 is a schematic plan view showing the peripheral configuration of the mold 60. FIG. 13 is a schematic plan view showing a state in which the tubular body 12a is placed on the pallet 51 in FIG. FIG. 14 is a schematic plan view showing a state in which the tubular body 12a is pushed by the holding tool 57 in FIG. In the tubular body 12a shown in FIGS. 13 and 14, the left side in the drawing corresponds to the upper end side, and the right side in the drawing corresponds to the lower end side.
　図６、図１２、図１３及び図１４に示されるように、抑え具５７は、パレット５１のＸ方向の他方側（金型６０とは反対側）に配置されている。抑え具５７は、パレット５１に載置された筒状体１２ａの下端面に当接し、筒状体１２ａの上端部が上金型６１と下金型６２との間に入り込むように筒状体１２ａの下端面をＸ方向に押し込むと共に、押し込んだ当該筒状体１２ａが戻らないように抑える。抑え具５７は、抑え具駆動機構５８の駆動によってパレット５１に対してＸ方向に接近及び離間するように構成されている。抑え具５７としては特に限定されず、種々の公知の器具を用いることができる。 As shown in FIGS. 6, 12, 13, and 14, the retainer 57 is arranged on the other side (opposite side of the mold 60) of the pallet 51 in the X direction. The retainer 57 abuts on the lower end surface of the tubular body 12a placed on the pallet 51, and the tubular body is such that the upper end portion of the tubular body 12a is inserted between the upper mold 61 and the lower mold 62. The lower end surface of 12a is pushed in the X direction, and the pushed tubular body 12a is suppressed so as not to return. The retainer 57 is configured to approach and separate from the pallet 51 in the X direction by driving the retainer drive mechanism 58. The presser 57 is not particularly limited, and various known devices can be used.
　図６に示されるように、抑え具駆動機構５８は、抑え具５７をＸ方向に沿って駆動する機構である。抑え具駆動機構５８は、例えばエアシリンダを含んでいる。抑え具駆動機構５８は、コントローラ５９に接続されており、その動作がコントローラ５９により制御される。抑え具駆動機構５８としては特に限定されず、種々の公知の駆動機構を用いることができる。 As shown in FIG. 6, the restraint drive mechanism 58 is a mechanism that drives the restraint 57 along the X direction. The retainer drive mechanism 58 includes, for example, an air cylinder. The restraint drive mechanism 58 is connected to the controller 59, and its operation is controlled by the controller 59. The presser drive mechanism 58 is not particularly limited, and various known drive mechanisms can be used.
　コントローラ５９は、ＣＰＵ（Central　Processing　Unit）、ＲＯＭ（Read　Only　Memory）及びＲＡＭ（Random　Access　Memory）等からなる電子制御ユニットである。コントローラ５９は、例えばＲＯＭに格納されているプログラムがＲＡＭ上にロードされてＣＰＵで実行されるソフトウェアとして構成することができる。コントローラ５９は、電子回路等によるハードウェアとして構成されてもよい。コントローラ５９は、一つの装置で構成されてもよいし、複数の装置で構成されてもよい。複数の装置で構成されている場合には、これらがインターネット又はイントラネット等の通信ネットワークを介して接続されることで、論理的に一つのコントローラ５９が構築される。 The controller 59 is an electronic control unit including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. For example, the controller 59 can be configured as software in which a program stored in the ROM is loaded on the RAM and executed by the CPU. The controller 59 may be configured as hardware such as an electronic circuit. The controller 59 may be composed of one device or a plurality of devices. When it is composed of a plurality of devices, one controller 59 is logically constructed by connecting them via a communication network such as the Internet or an intranet.
　コントローラ５９は、連座溶着装置５０の各種動作を制御する。コントローラ５９は、筒状体供給装置５４、チャッカー５５、金型駆動機構５６、抑え具駆動機構５８及びヒータ６３を制御する。コントローラ５９は、例えば作業者との間で情報の入出力を行うためのインターフェイスであるＨＭＩ（Human　Machine　Interface）を備えていてもよい。コントローラ５９は、スマートデバイス及びサーバ（クラウドサーバ）などの少なくとも何れかと通信を行ってもよい。 The controller 59 controls various operations of the collective punishment welding device 50. The controller 59 controls the tubular body supply device 54, the chucker 55, the mold drive mechanism 56, the retainer drive mechanism 58, and the heater 63. The controller 59 may include, for example, an HMI (Human Machine Interface), which is an interface for inputting / outputting information to / from an operator. The controller 59 may communicate with at least one of a smart device, a server (cloud server), and the like.
　次に、実施形態に係る連座溶着方法について説明する。 Next, the collective punishment welding method according to the embodiment will be described.
　連座溶着方法は、所定数の筒状体１２ａの端部に上部連座１を熱溶着する方法である。連座溶着方法は、上述した連座溶着装置５０により実現される。具体的には、まず、図１３に示されるように、筒状体供給装置５４により、筒状体集積部５２から所定数の筒状体１２ａをパレット５１上に整列させた状態で載置させる。 The collective punishment welding method is a method of heat welding the upper collective punishment 1 to the ends of a predetermined number of tubular bodies 12a. The collective punishment welding method is realized by the above-mentioned collective punishment welding device 50. Specifically, first, as shown in FIG. 13, a predetermined number of tubular bodies 12a are placed on the pallet 51 from the tubular body accumulating portion 52 in a state of being aligned by the tubular body supply device 54. ..
　続いて、図１４に示されるように、抑え具駆動機構５８により抑え具５７を駆動し、抑え具５７を金型６０に近づくようにＸ方向に移動させる。これにより、パレット５１上の所定数の筒状体１２ａの上端部（金型６０側の端部）が上金型６１と下金型６２との間に入り込むように、当該筒状体１２ａの下端面を抑え具５７でＸ方向に押し込む。また、押し込んだ当該筒状体１２ａを、金型６０から離間する側に移動しないようにＸ方向に抑える。なお、押し込まれた筒状体１２ａの上端縁は、金型６０の縁と同位置に位置していてもよいし（図１６（ａ）参照）、上金型６１と下金型６２との間に位置していてもよいし、パレット５１から離間する側に上金型６１と下金型６２との間から多少突き出していてもよい。 Subsequently, as shown in FIG. 14, the retainer 57 is driven by the retainer drive mechanism 58, and the retainer 57 is moved in the X direction so as to approach the mold 60. As a result, the upper end portion (end portion on the mold 60 side) of a predetermined number of tubular bodies 12a on the pallet 51 is inserted between the upper mold 61 and the lower mold 62. The lower end surface is pushed in the X direction with the holding tool 57. Further, the pushed-in tubular body 12a is suppressed in the X direction so as not to move to the side away from the mold 60. The upper end edge of the pushed tubular body 12a may be located at the same position as the edge of the mold 60 (see FIG. 16A), and the upper mold 61 and the lower mold 62 It may be located between them, or may slightly protrude from between the upper mold 61 and the lower mold 62 on the side away from the pallet 51.
　続いて、チャッカー５５において、一対のアーム５５ａを互いにＹ方向に接近する状態とする。例えば図１５（ａ）に示されるように、Ｙ方向において、一対のアーム５５ａのうちの一方のアーム５５ａの先端から他方のアーム５５ａの先端までの長さを、上部連座１の開口２ａよりも小さい状態とする。Ｚ軸レール５５ｃ及びＸ軸レール５５ｄに沿って適宜に一対のアーム５５ａを可動し、上部連座集積部５３に集積された上部連座１の基部２の内部に一対のアーム５５ａを開口２ａから進入させる。そして、図１５（ｂ）に示されるように、一対のアーム５５ａを互いに離れるように移動して、基部２の側壁２ｃの内面に対してＹ方向に沿って一対のアーム５５ａを突き当てる（突っ張る）。これにより、上部連座１の基部２を把持する（把持工程）。 Subsequently, in the chucker 55, the pair of arms 55a are brought close to each other in the Y direction. For example, as shown in FIG. 15A, the length from the tip of one arm 55a of the pair of arms 55a to the tip of the other arm 55a in the Y direction is longer than the opening 2a of the upper collective punishment 1. Make it small. A pair of arms 55a are appropriately moved along the Z-axis rail 55c and the X-axis rail 55d, and the pair of arms 55a are allowed to enter the inside of the base 2 of the upper collective punishment 1 integrated in the upper collective punishment accumulating portion 53 through the opening 2a. .. Then, as shown in FIG. 15B, the pair of arms 55a are moved away from each other, and the pair of arms 55a are abutted (stretched) with respect to the inner surface of the side wall 2c of the base portion 2 along the Y direction. ). As a result, the base 2 of the upper collective punishment 1 is gripped (grasping step).
　続いて、図１６（ａ）及び図１６（ｂ）に示されるように、上部連座１の基部２を一対のアーム５５ａで把持した状態で、Ｚ軸レール５５ｃ及びＸ軸レール５５ｄに沿って適宜に一対のアーム５５ａを可動し、把持した上部連座１を取付位置まで移動させ、複数の筒状体１２ａの上端部に上部連座１の筒部３を挿入する（挿入工程）。 Subsequently, as shown in FIGS. 16A and 16B, the base portion 2 of the upper collective punishment 1 is appropriately gripped by the pair of arms 55a along the Z-axis rail 55c and the X-axis rail 55d. The pair of arms 55a are movable, the gripped upper connecting seat 1 is moved to the mounting position, and the tubular portion 3 of the upper connecting seat 1 is inserted into the upper end portions of the plurality of tubular bodies 12a (insertion step).
　続いて、図１７（ａ）に示されるように、金型駆動機構５６により、上金型６１と下金型６２とを接近するようにＺ方向に移動させる。このとき、上金型６１及び下金型６２はヒータ６３により所定温度まで加熱されている。上金型６１の当接面６１ａに筒状体１２ａが当接され、下金型６２の当接面６２ａに筒状体１２ａが当接されているが、上金型６１と下金型６２とは互いに当接せず、上金型６１と下金型６２とがＺ方向に最も接近した状態でこれらの間に隙間が形成されている。 Subsequently, as shown in FIG. 17A, the mold drive mechanism 56 moves the upper mold 61 and the lower mold 62 in the Z direction so as to approach each other. At this time, the upper mold 61 and the lower mold 62 are heated to a predetermined temperature by the heater 63. The tubular body 12a is in contact with the contact surface 61a of the upper mold 61, and the tubular body 12a is in contact with the contact surface 62a of the lower mold 62, but the upper mold 61 and the lower mold 62 are in contact with each other. The upper mold 61 and the lower mold 62 are closest to each other in the Z direction, and a gap is formed between them.
　これにより、上部連座１が挿入された筒状体１２ａの上端部は、当接面６１ａと当接面６２ａとによって、加熱されながら強く且つ強すぎずに挟み込まれる。すなわち、上部連座１の基部２をチャッカー５５で把持した状態で、且つ、所定数の筒状体１２ａの上端部に上部連座１の筒部３を挿入した状態で、筒状体１２ａの上端部が金型６０で加圧されながら加熱される（加圧加熱工程）。その結果、上部連座１の筒部３と筒状体１２ａの上端部とが、溶着により固着される。 As a result, the upper end portion of the tubular body 12a into which the upper connecting seat 1 is inserted is sandwiched by the contact surface 61a and the contact surface 62a while being heated and not too strong and not too strong. That is, the upper end portion of the tubular body 12a is held by the chucker 55 while the base portion 2 of the upper connecting seat 1 is gripped by the chucker 55, and the tubular portion 3 of the upper connecting seat 1 is inserted into the upper end portion of a predetermined number of tubular bodies 12a. Is heated while being pressurized by the mold 60 (pressurization heating step). As a result, the tubular portion 3 of the upper joint seat 1 and the upper end portion of the tubular body 12a are fixed by welding.
　その後、図１７（ｂ）に示されるように、金型駆動機構５６により、上金型６１と下金型６２とが離れるようにＺ方向に移動させる。その後、例えばロボットアームなど（不図示）により、上部連座１が溶着された筒状体１２ａが金型６０から抜出され、後段の装置へ供給される。 After that, as shown in FIG. 17B, the upper mold 61 and the lower mold 62 are moved in the Z direction so as to be separated from each other by the mold drive mechanism 56. After that, for example, a tubular body 12a to which the upper joint 1 is welded is pulled out from the mold 60 by a robot arm or the like (not shown) and supplied to a subsequent device.
　以上、連座溶着装置５０及び連座溶着方法では、金型６０を利用して、複数の筒状体１２ａの上端部を加圧及び加熱することができる。金型６０の当接面６１ａ，６２ａは、筒状体１２ａの外周面に沿った曲面を有する。よって、例えば、筒状体１２の上端部に対する加熱及び加圧の偏りを抑え、筒状体１２ａに適した態様で筒状体１２ａの上端部の加熱及び加圧を行うことができる。所定数の筒状体１２ａのそれぞれに上部連座１を適切に熱溶着することができ、筒状体１２ａと上部連座１との溶着強度を高めることが可能となる。 As described above, in the collective punishment welding device 50 and the collective punishment welding method, the upper ends of the plurality of tubular bodies 12a can be pressurized and heated by using the mold 60. The contact surfaces 61a and 62a of the mold 60 have curved surfaces along the outer peripheral surface of the tubular body 12a. Therefore, for example, it is possible to suppress the bias of heating and pressurizing the upper end portion of the tubular body 12, and to heat and pressurize the upper end portion of the tubular body 12a in a manner suitable for the tubular body 12a. The upper connecting seat 1 can be appropriately heat-welded to each of a predetermined number of tubular bodies 12a, and the welding strength between the tubular body 12a and the upper connecting seat 1 can be increased.
　連座溶着装置５０及び連座溶着方法では、筒状体１２ａは、円筒状を呈している。Ｘ方向から見て、金型６０における当接面６１ａ，６２ａの曲面の形状は円弧形状であり、その円弧形状の半径ｒｄは、筒状体１２ａの外半径ｒｔ以下である。これにより、筒状体１２ａに一層適した態様で筒状体１２ａの上端部の加熱及び加圧を行うことができる。 In the collective punishment welding device 50 and the collective punishment welding method, the tubular body 12a has a cylindrical shape. When viewed from the X direction, the curved surfaces of the contact surfaces 61a and 62a in the mold 60 have an arc shape, and the radius rd of the arc shape is equal to or less than the outer radius rt of the tubular body 12a. Thereby, the upper end portion of the tubular body 12a can be heated and pressurized in a manner more suitable for the tubular body 12a.
　連座溶着装置５０及び連座溶着方法では、上部連座１は、ポリスチレンを含む材料で形成されている。これにより、複数の筒状体１２ａの上端部に上部連座１を確実に熱溶着することができる。 In the collective punishment welding device 50 and the collective punishment welding method, the upper collective punishment 1 is formed of a material containing polystyrene. As a result, the upper joints 1 can be reliably heat-welded to the upper ends of the plurality of tubular bodies 12a.
　連座溶着装置５０は、上部連座１の基部２を把持するチャッカー５５を更に備える。チャッカー５５により、上部連座１の加圧及び加熱される部分以外の部分である基部２を把持することができる。上部連座１の把持にその加圧及び加熱による影響が及ぶのを抑制することが可能となる。 The collective punishment welding device 50 further includes a chucker 55 that grips the base 2 of the upper collective punishment 1. The chucker 55 can grip the base portion 2 which is a portion other than the portion to be pressurized and heated of the upper collective punishment 1. It is possible to suppress the influence of pressurization and heating on the gripping of the upper collective punishment 1.
　連座溶着装置５０では、チャッカー５５は、一対のアーム５５ａを備える。一対のアーム５５ａは、基部２の長手方向に沿って互いに離れるように移動して、基部２の内面に基部２の長手方向に沿って突き当たることで、基部２を把持する。この構成によれば、チャッカー５５による基部２の把持を具体的且つ効果的に実現できる。 In the collective punishment welding device 50, the chucker 55 includes a pair of arms 55a. The pair of arms 55a move away from each other along the longitudinal direction of the base 2 and abut against the inner surface of the base 2 along the longitudinal direction of the base 2 to grip the base 2. According to this configuration, the chucker 55 can concretely and effectively grip the base portion 2.
　連座溶着装置５０では、金型６０は、上金型６１、下金型６２及びヒータ６３を含む。上金型６１の下金型６２側の面が当接面６１ａを有し、下金型６２の上金型６１側の面が当接面６２ａを有する。金型駆動機構５６により、上金型６１と下金型６２とが互いに接近及び離間するように駆動される。この構成によれば、筒状体１２ａに適した態様で筒状体１２ａの上端部の加熱及び加圧を行い得る上記効果を、具体的且つ効果的に実現できる。 In the collective punishment welding device 50, the mold 60 includes an upper mold 61, a lower mold 62, and a heater 63. The surface of the upper mold 61 on the lower mold 62 side has a contact surface 61a, and the surface of the lower mold 62 on the upper mold 61 side has a contact surface 62a. The mold drive mechanism 56 drives the upper mold 61 and the lower mold 62 so as to approach and separate from each other. According to this configuration, the above-mentioned effect of heating and pressurizing the upper end portion of the tubular body 12a in a manner suitable for the tubular body 12a can be realized concretely and effectively.
　連座溶着方法において、挿入工程では、上部連座１の基部２を把持したチャッカー５５の一対のアーム５５ａを移動して、複数の筒状体１２ａの上端部に上部連座１を挿入する。加圧加熱工程では、上部連座１の基部２をチャッカー５５で把持した状態で、当該上端部を金型６０で加圧しながら加熱する。チャッカー５５により、上部連座１の加圧及び加熱される部分以外の部分である基部２を把持することができる。上部連座１の把持にその加圧及び加熱による影響が及ぶのを抑制することが可能となる。また、基部２をチャッカー５５で把持した状態で筒状体１２ａの上端部を加熱及び加圧できることから、筒状体１２ａの上端部を精度よく加熱及び加圧することが可能となる。 In the collective punishment welding method, in the insertion step, the pair of arms 55a of the chucker 55 holding the base 2 of the upper collective punishment 1 is moved, and the upper collective punishment 1 is inserted into the upper ends of the plurality of tubular bodies 12a. In the pressurizing and heating step, while the base 2 of the upper collective punishment 1 is gripped by the chucker 55, the upper end thereof is heated while being pressurized by the mold 60. The chucker 55 can grip the base portion 2 which is a portion other than the portion to be pressurized and heated of the upper collective punishment 1. It is possible to suppress the influence of pressurization and heating on the gripping of the upper collective punishment 1. Further, since the upper end portion of the tubular body 12a can be heated and pressurized while the base portion 2 is gripped by the chucker 55, the upper end portion of the tubular body 12a can be heated and pressurized with high accuracy.
　以上、実施形態について説明したが、本発明の一態様は上記実施形態に限定されない。 Although the embodiments have been described above, one aspect of the present invention is not limited to the above embodiments.
　本発明の一態様では、上金型６１及び下金型６２の両者にヒータ６３が設けられているが、これらの少なくとも何れかにヒータ６３が設けられていてもよい。本発明の一態様は、上部連座１の筒状体１２ａへの上端部に適用したが、これに限定されない。本発明の一態様は、下部連座１２ｃが溶着により筒状体１２ａの下端部に取り付けられる構成であれば、下部連座１２ｃの当該溶着に適用することができる。 In one aspect of the present invention, the heater 63 is provided in both the upper mold 61 and the lower mold 62, but a heater 63 may be provided in at least one of these. One aspect of the present invention has been applied to, but is not limited to, the upper end of the upper joint 1 to the tubular body 12a. One aspect of the present invention can be applied to the welding of the lower punishment 12c as long as the lower punishment 12c is attached to the lower end of the tubular body 12a by welding.
　本発明の一態様では、筒状体１２ａの形状は円筒状に限定されず、種々の筒形状であってもよい、この場合、当接面６１ａ，６２ａは、種々の筒形状の外面に沿った曲面を有していればよい。本発明の一態様では、筒状体１２ａの数（所定数）は、特に限定されない。本発明の一形態では、金型６０の当接面６１ａ，６２ａの全面が筒状体１２ａの外周面に沿った曲面であるが、当接面６１ａ，６２ａの少なくとも一部が筒状体１２ａの外周面に沿った曲面であってもよく、すなわち、金型の当接面は筒状体の外面に沿った曲面を有していればよい。本発明の一態様では、上金型６１と下金型６２とを互いに接近及び離間させるために、これらの双方を駆動したが、これらの一方のみを駆動してもよい。 In one aspect of the present invention, the shape of the tubular body 12a is not limited to a cylindrical shape and may be various tubular shapes. In this case, the contact surfaces 61a and 62a are along the outer surfaces of the various tubular shapes. It suffices to have a curved surface. In one aspect of the present invention, the number (predetermined number) of tubular bodies 12a is not particularly limited. In one embodiment of the present invention, the entire surface of the contact surfaces 61a and 62a of the mold 60 is a curved surface along the outer peripheral surface of the tubular body 12a, but at least a part of the contact surfaces 61a and 62a is the tubular body 12a. It may be a curved surface along the outer peripheral surface of the mold, that is, the contact surface of the mold may have a curved surface along the outer surface of the tubular body. In one aspect of the present invention, both of the upper mold 61 and the lower mold 62 are driven in order to approach and separate from each other, but only one of them may be driven.
　本発明の一態様では、金型６０が上金型６１と下金型６２とで分かれて構成されているが、このような複数に分かれた構成の金型６０に限定されない。例えば金型６０は、上金型６１と下金型６２とが一体的に連結されたような構成としてもよい。この場合、金型６０において筒状体１２ａの上端部に当接する当接面は、Ｘ方向から見て、筒状体１２ａの外周面に沿った円形状の曲面を有していてもよい。本発明の一態様では、金型６０の形状を限定されず、種々の形状としていてもよい。 In one aspect of the present invention, the mold 60 is divided into an upper mold 61 and a lower mold 62, but the mold 60 is not limited to such a plurality of divided molds 60. For example, the mold 60 may be configured such that the upper mold 61 and the lower mold 62 are integrally connected. In this case, the contact surface of the mold 60 that comes into contact with the upper end of the tubular body 12a may have a circular curved surface along the outer peripheral surface of the tubular body 12a when viewed from the X direction. In one aspect of the present invention, the shape of the mold 60 is not limited, and various shapes may be used.
　本発明の一態様に係る連座溶着装置５０の対象となる正極１０及び鉛蓄電池１００は、電気車に用いることができる。電気車としては、フォークリフト、ゴルフカート等が挙げられる。本発明では、上記実施形態及び上記変形例の各構成を適宜組み合わせてもよい。本発明は、その要旨を逸脱しない範囲で様々な変更が可能である。 The positive electrode 10 and the lead storage battery 100, which are the targets of the collective punishment welding device 50 according to one aspect of the present invention, can be used for an electric vehicle. Examples of electric vehicles include forklifts and golf carts. In the present invention, each configuration of the above-described embodiment and the above-mentioned modification may be appropriately combined. The present invention can be modified in various ways without departing from the gist thereof.
　１…上部連座（連座）、２…基部、２ａ…開口、２ｂ…底面、３…筒部、１０…正極（電極）、１２ａ…筒状体、５０…連座溶着装置、５５…チャッカー（把持部材）、５５ａ…アーム、６０…金型、６１…上金型、６１ａ…当接面、６２…下金型、６２ａ…当接面、６３…ヒータ、５６…金型駆動機構（駆動部）。 1 ... Upper punishment (collective punishment), 2 ... Base, 2a ... Opening, 2b ... Bottom surface, 3 ... Cylinder, 10 ... Positive electrode (electrode), 12a ... Cylindrical body, 50 ... Ling punishment welding device, 55 ... Chucker (grasping member) ), 55a ... arm, 60 ... mold, 61 ... upper mold, 61a ... contact surface, 62 ... lower mold, 62a ... contact surface, 63 ... heater, 56 ... mold drive mechanism (drive unit).

Claims (10)

  1. 　電極に用いられる複数の筒状体の端部に連座を熱溶着する装置であって、
    　複数の前記筒状体の端部に前記連座が挿入された状態で当該端部を加圧しながら加熱する金型を備え、
    　前記金型において複数の前記筒状体の端部に当接する当接面は、複数の前記筒状体の外面に沿った曲面を有する、連座溶着装置。     A device that heat-welds a collective punishment to the ends of a plurality of tubular bodies used for electrodes.
    A mold is provided for heating while pressurizing the end portions in a state where the joint seat is inserted into the end portions of the plurality of tubular bodies.
    A collective punishment welding device in which the contact surfaces of the mold that come into contact with the ends of the tubular bodies have curved surfaces along the outer surfaces of the plurality of tubular bodies.
  2. 　前記筒状体は、円筒状を呈し、
    　前記筒状体の軸方向から見て、前記金型における前記当接面の前記曲面の形状は、円形状又は円弧形状を有し、
    　前記曲面の前記円形状又は前記円弧形状の半径は、前記筒状体の外半径以下である、請求項１に記載の連座溶着装置。     The tubular body has a cylindrical shape and has a cylindrical shape.
    When viewed from the axial direction of the tubular body, the shape of the curved surface of the contact surface in the mold has a circular shape or an arc shape.
    The collective punishment welding device according to claim 1, wherein the radius of the circular shape or the arc shape of the curved surface is equal to or less than the outer radius of the tubular body.
  3. 　前記連座は、ポリスチレンを含む材料で形成されている、請求項１又は２に記載の連座溶着装置。 The collective punishment welding device according to claim 1 or 2, wherein the collective punishment is made of a material containing polystyrene.
  4. 　前記連座は、長尺状の開口を有する有底箱状の基部と、前記基部の底面に設けられ複数の前記筒状体の端部のそれぞれに挿入される複数の筒部と、を含んでおり、
    　前記連座の基部を把持する把持部材を更に備える、請求項１～３の何れか一項に記載の連座溶着装置。     The collective punishment includes a bottomed box-shaped base having a long opening and a plurality of tubular portions provided on the bottom surface of the base and inserted into each of the end portions of the plurality of tubular bodies. Ori,
    The collective punishment welding device according to any one of claims 1 to 3, further comprising a gripping member for gripping the base of the collective punishment.
  5. 　前記把持部材は、一対のアームを備え、
    　一対の前記アームは、前記基部の長手方向に沿って互いに離れるように移動して、前記基部の内面に前記基部の長手方向に沿って突き当たることで、前記基部を把持する、請求項４に記載の連座溶着装置。     The gripping member includes a pair of arms.
    The fourth aspect of claim 4, wherein the pair of the arms move away from each other along the longitudinal direction of the base and abut against the inner surface of the base along the longitudinal direction of the base to grip the base. Coupling welding device.
  6. 　前記金型は、協動して複数の前記筒状体を挟む上金型及び下金型と、前記上金型及び前記下金型の少なくとも何れかに設けられたヒータと、を含み、
    　前記上金型における前記下金型側の面と前記下金型における前記上金型側の面とが、前記当接面を有し、
    　前記上金型と前記下金型とを互いに接近及び離間するように駆動する駆動部を更に備える、請求項１～５の何れか一項に記載の連座溶着装置。     The mold includes an upper mold and a lower mold that cooperate to sandwich a plurality of the tubular bodies, and a heater provided in at least one of the upper mold and the lower mold.
    The surface of the upper mold on the lower mold side and the surface of the lower mold on the upper mold side have the contact surface.
    The collective punishment welding device according to any one of claims 1 to 5, further comprising a driving unit that drives the upper mold and the lower mold so as to approach and separate from each other.
  7. 　電極に用いられる複数の筒状体の端部に連座を熱溶着する方法であって、
    　複数の前記筒状体の端部に前記連座を挿入する挿入工程と、
    　複数の前記筒状体の端部に前記連座を挿入した状態で、当該端部を金型で加圧しながら加熱する加圧加熱工程と、を備え、
    　前記金型において複数の前記筒状体の端部に当接する当接面は、複数の前記筒状体の外面に沿った曲面を有する、連座溶着方法。     A method of heat-welding a collective punishment to the ends of a plurality of tubular bodies used for electrodes.
    An insertion step of inserting the punishment into the ends of the plurality of tubular bodies, and
    It is provided with a pressurizing and heating step of heating the end portions while pressurizing them with a mold while the joint seats are inserted into the end portions of the plurality of tubular bodies.
    A collective punishment welding method in which the contact surfaces of the mold that abut on the ends of the tubular bodies have curved surfaces along the outer surfaces of the plurality of tubular bodies.
  8. 　前記筒状体は、円筒状を呈し、
    　前記筒状体の軸方向から見て、前記金型における前記当接面の前記曲面の形状は、円形状又は円弧形状を有し、
    　前記曲面の前記円形状又は前記円弧形状の半径は、前記筒状体の外半径以下である、請求項７に記載の連座溶着方法。     The tubular body has a cylindrical shape and has a cylindrical shape.
    When viewed from the axial direction of the tubular body, the shape of the curved surface of the contact surface in the mold has a circular shape or an arc shape.
    The collective punishment welding method according to claim 7, wherein the radius of the circular shape or the arc shape of the curved surface is equal to or less than the outer radius of the tubular body.
  9. 　前記連座は、ポリスチレンを含む材料で形成されている、請求項７又は８に記載の連座溶着方法。 The collective punishment welding method according to claim 7 or 8, wherein the collective punishment is made of a material containing polystyrene.
  10. 　前記連座は、長尺状の開口を有する有底箱状の基部と、前記基部の底面に設けられ複数の前記筒状体の端部のそれぞれに挿入される複数の筒部と、を含んでおり、
    　前記挿入工程の前に、前記連座の基部を把持部材で把持する把持工程を更に備え、
    　前記挿入工程では、前記連座の基部を把持した前記把持部材を移動して、複数の前記筒状体の端部に前記連座を挿入し、
    　前記加圧加熱工程では、前記連座の基部を前記把持部材で把持した状態で、当該端部を金型で加圧しながら加熱する、請求項７～９の何れか一項に記載の連座溶着方法。     The collective punishment includes a bottomed box-shaped base having a long opening and a plurality of tubular portions provided on the bottom surface of the base and inserted into each of the end portions of the plurality of tubular bodies. Ori,
    Prior to the insertion step, a gripping step of gripping the base of the collective punishment with a gripping member is further provided.
    In the insertion step, the gripping member that grips the base of the punishment is moved to insert the punishment into the ends of the plurality of tubular bodies.
    The collective punishment welding method according to any one of claims 7 to 9, wherein in the pressure heating step, the base portion of the collective punishment is gripped by the gripping member and the end portion is heated while being pressed by a mold. ..
PCT/JP2019/029689 2019-07-29 2019-07-29 Linking-seat welding device and linking-seat welding method WO2021019651A1 (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029364U (en) * 1983-08-05 1985-02-27 日本電池株式会社 Clad storage battery
JPS62190659A (en) * 1986-02-17 1987-08-20 Japan Storage Battery Co Ltd Manufacture of clad type plate
JPS63178445A (en) * 1987-01-17 1988-07-22 Yuasa Battery Co Ltd Manufacture of plate for storage battery
JPS63178444A (en) * 1987-01-17 1988-07-22 Yuasa Battery Co Ltd Manufacture of clad type cathode plate
JPH04123759A (en) * 1990-09-14 1992-04-23 Yuasa Corp Manufacture of clad-type cathode plate
JPH04137363A (en) * 1990-09-26 1992-05-12 Yuasa Corp Manufacture of clad type anode plate
JP2005216689A (en) * 2004-01-30 2005-08-11 Shin Kobe Electric Mach Co Ltd Manufacturing method of cladding type positive electrode plate
JP2009302007A (en) * 2008-06-17 2009-12-24 Shin Kobe Electric Mach Co Ltd Method for manufacturing clad type positive electrode plate

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6029364U (en) * 1983-08-05 1985-02-27 日本電池株式会社 Clad storage battery
JPS62190659A (en) * 1986-02-17 1987-08-20 Japan Storage Battery Co Ltd Manufacture of clad type plate
JPS63178445A (en) * 1987-01-17 1988-07-22 Yuasa Battery Co Ltd Manufacture of plate for storage battery
JPS63178444A (en) * 1987-01-17 1988-07-22 Yuasa Battery Co Ltd Manufacture of clad type cathode plate
JPH04123759A (en) * 1990-09-14 1992-04-23 Yuasa Corp Manufacture of clad-type cathode plate
JPH04137363A (en) * 1990-09-26 1992-05-12 Yuasa Corp Manufacture of clad type anode plate
JP2005216689A (en) * 2004-01-30 2005-08-11 Shin Kobe Electric Mach Co Ltd Manufacturing method of cladding type positive electrode plate
JP2009302007A (en) * 2008-06-17 2009-12-24 Shin Kobe Electric Mach Co Ltd Method for manufacturing clad type positive electrode plate

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