JP6939383B2 - Liquid drainer - Google Patents

Description

The present invention relates to a liquid draining device, and particularly applies a liquid adhesive remaining at the tip of a nozzle in a manner of being exposed to the outside from the discharge port of a nozzle having a discharge port at the tip for discharging the liquid adhesive. The present invention relates to a liquid draining device for removing from the tip of the liquid.

Conventionally, an assembled battery in which a plurality of cells are fixed to a holder is known. For example, Patent Document 1 has a plurality of holding holes which have a first surface and a second surface facing in the opposite direction, and which are holes penetrating between the first surface and the second surface. A cell having an outer diameter smaller than the inner diameter of the holding hole, and a plurality of cells inserted into the holding hole of the holder, and the outer peripheral surface of the cell and the holding of the holder. An assembled battery comprising an adhesive in a state of being injected and solidified into a gap between the inner peripheral surface of the hole, which is an inner peripheral surface constituting the hole, is disclosed. In this assembled battery, each cell is fixed to the holder in a manner of being held by the holder via an adhesive.

Japanese Unexamined Patent Publication No. 2016-207494

In Patent Document 1, a liquid adhesive is injected into an injection space which is a part in the circumferential direction of a gap between the outer peripheral surface of the cell and the inner peripheral surface of the hole of the holder. Specifically, the injection space located between the outer peripheral surface of the cell and the inner peripheral surface of the hole of the holder with the second surface of the holder into which the cell is inserted facing upward (the first surface downward). The adhesive is injected from above (second surface side) toward the injection space. More specifically, with the second surface of the holder into which the cell is inserted facing upward (the first surface facing downward), the discharge port of the nozzle that discharges the liquid adhesive is located above the injection space. In the arranged state, the adhesive is injected into the injection space by discharging the liquid adhesive downward from the discharge port of this nozzle.

By the way, after the liquid adhesive is discharged downward from the discharge port of the nozzle, the liquid adhesive is exposed (leaked) from the discharge port to the outside (downward) to the tip of the nozzle (outside the discharge port). It may remain (residual) (this adhesive is referred to as a residual liquid adhesive). Further, the nozzle is configured to move as follows, for example. First, in order to replace the adhesive remaining in the nozzle with a new adhesive when the previous injection is completed, the adhesive remaining in the nozzle is discharged at the standby position, and a new liquid adhesive is adhered into the nozzle. Introduce the agent. Then, with the discharge port facing downward, the liquid adhesive is moved from the standby position to an injection target (holder into which the cell is inserted) having one or more injection spaces into which the liquid adhesive is injected. Then, the liquid adhesive is discharged downward from the discharge port of the nozzle toward each injection space, the liquid adhesive is injected into each injection space, and then the process returns to the standby position.

In such a case, the above-mentioned residual liquid adhesive falls from the discharge port while the nozzle moves from the standby position to the injection target or while the nozzle moves from the injection target to the standby position ( There was a case of dripping). In order to prevent this, of the position in the middle of the first movement path in which the nozzle moves from the standby position to the injection target and the position in the middle of the second movement path in which the nozzle moves from the injection target to the standby position. There has been a demand for a liquid draining device capable of removing (draining) residual liquid adhesive at at least one position.

The present invention has been made in view of the current situation, and the position in the middle of the first movement path in which the nozzle moves from the standby position to the injection target, and the position where the nozzle moves from the injection target to the standby position. 2. It is an object of the present invention to provide a liquid draining device capable of removing (draining) residual liquid adhesive at at least one of the positions in the middle of the movement path.

One aspect of the present invention is a liquid draining device including a liquid draining member and a support member for supporting the liquid draining member, and the liquid draining member discharges a liquid adhesive as a liquid drainer. When the liquid draining member comes into contact with the residual liquid adhesive, which is the liquid adhesive remaining at the tip of the nozzle in a manner exposed to the outside from the discharge port of the nozzle having an outlet at the tip. A member for removing the residual liquid adhesive, the nozzle has one or a plurality of injection spaces into which the liquid adhesive is injected from a standby position in a posture in which the discharge port is directed downward. It is configured to move to the object, inject the liquid adhesive into the injection space, and then return to the standby position. The liquid draining member has a ring shape and the discharge port is lowered. The position in the middle of the first movement path in which the nozzle moves from the standby position to the injection target object so that the nozzle moving in the posture toward the liquid passes above the liquid draining member, and the nozzle. Is located at least one of the positions in the middle of the second movement path for moving from the injection target to the standby position, and the liquid draining member is in a posture in which the nozzle faces the discharge port downward. When passing above, the nozzle is arranged at a position where the residual liquid adhesive comes into contact with the liquid draining member without contacting the liquid draining member, and the liquid draining device has a ring shape. By moving the liquid draining member in the circumferential direction, the liquid draining device is configured so that the portion of the liquid draining member in contact with the residual liquid adhesive can be changed.

The above-mentioned liquid draining device includes a liquid draining member and a support member that supports the liquid draining member. Of these, the liquid draining member is a liquid drainer, and is exposed (leaked) to the outside (downward) from the discharge port of the nozzle having a discharge port for discharging the liquid adhesive at the tip of the nozzle (discharge port). The residual liquid adhesive is removed by contacting the liquid draining member with the liquid adhesive (this adhesive is referred to as the residual liquid adhesive) remaining (residual) on the outside). The nozzle moves from the standby position (standby place) to an injection target having one or more injection spaces into which the liquid adhesive is injected, with the discharge port facing downward, and enters the injection space. By discharging the liquid adhesive downward from the discharge port, the liquid adhesive is injected into the injection space and then returned to the standby position.

Further, the above-mentioned liquid draining device includes a ring-shaped (annular) liquid draining member as the liquid draining member. In this liquid draining member, the nozzle that moves with the discharge port facing downward passes above the liquid draining member, and the nozzle is in the middle of the first movement path in which the nozzle moves from the standby position to the injection target. The position and the position in the middle of the second movement path in which the nozzle moves from the injection target to the standby position are arranged at at least one of the positions. Further, in this liquid draining member, when the nozzle passes above the liquid draining member with the discharge port facing downward, the residual liquid adhesive does not come into contact with the liquid draining member. It is arranged at a position where it comes into contact with the liquid draining member.

Therefore, when the residual liquid adhesive is present at the discharge port of the nozzle, the liquid draining member may be used at at least one of the positions in the middle of the first movement path and the middle position of the second movement path. , Residual liquid adhesive can be appropriately removed (drained). Thereby, it is possible to reduce the residual liquid adhesive from falling (dripping) from the discharge port in the middle of the first movement path or the middle of the second movement path.

By the way, when the residual liquid adhesive is removed (drained) by the liquid draining member, a part of the residual liquid adhesive may adhere to the surface of the liquid draining member. Therefore, with the use of the liquid draining device, the adhesive adhering to the surface of the liquid draining member may solidify, and the adhesive may be deposited on the surface of the liquid draining member. If the adhesive is deposited on the surface of the liquid draining member in this way, the liquid draining member may not be able to properly remove (drain) the residual liquid adhesive.

On the other hand, the above-mentioned liquid draining device includes a ring-shaped liquid draining member as the liquid draining member. Further, the above-mentioned liquid draining device is configured so that the portion (position) of the liquid draining member in contact with the residual liquid adhesive can be changed by moving (rotating) the ring-shaped liquid draining member in the circumferential direction. ing. For this reason, when the solidified adhesive is deposited on the surface of the liquid draining member and there is a risk that the liquid draining member cannot properly remove (drain) the residual liquid adhesive, the liquid draining member may not be able to properly remove (drain) the residual liquid adhesive. The ring-shaped liquid draining member is moved (rotated) in the circumferential direction, and the part of the liquid draining member where the residual liquid adhesive contacts (the part where the tip of the nozzle passes) is the part where the adhesive does not adhere. By changing to (unused part), the residual liquid adhesive can be appropriately removed (drained) by the liquid draining member. Therefore, in the above-mentioned liquid draining device, the residual liquid adhesive can be appropriately removed (drained) for a long period of time by one liquid draining member.

As the ring-shaped liquid draining member, for example, an O-ring made of rubber (for example, EPDM, fluororubber, natural rubber, etc.) can be used. Further, a ring-shaped liquid draining member made of resin or metal may be used.

Further, the surface of the liquid draining member is preferably made of a material having low wettability (EPDM, fluororubber, PTFE, etc.). By lowering the wettability of the surface of the liquid draining member, it becomes difficult for the adhesive to adhere to the surface of the liquid draining member, and it becomes difficult for the solidified adhesive to accumulate on the surface of the liquid draining member. This makes it possible to reduce the frequency of "the work of moving (rotating) the ring-shaped liquid draining member in the circumferential direction to change the portion of the liquid draining member that the residual liquid adhesive comes into contact with".

Further, when the solidified adhesive is deposited on the surface of the liquid draining member, it is easily peeled off from the surface of the liquid draining member. Therefore, if the adhesive deposited on the surface of the liquid draining member is peeled off and used, the residual liquid adhesive can be continuously removed (liquid drained) by one liquid draining member for a longer period of time.

Further, after the residual liquid adhesive comes into contact with the liquid draining member, at least a part of the residual liquid adhesive may fall (fall without adhering to the liquid draining member). Therefore, in the above-mentioned liquid draining device, which is a container arranged below the liquid draining member, the liquid adhesive that has fallen due to contact with the liquid draining member among the residual liquid adhesive is received. It is preferable to use a drainage device provided with a container for accommodating the liquid.

It is a perspective view of the assembled battery which concerns on embodiment. It is a top view of the holder which concerns on embodiment. It is an enlarged plan view of the holding hole of the holder. It is an enlarged partial sectional view of the assembled battery which concerns on embodiment. It is a figure explaining the cell insertion process which concerns on embodiment. It is a figure explaining the adhesive injection process which concerns on embodiment. It is another figure explaining the adhesive injection process. It is another figure explaining the adhesive injection process. It is another figure explaining the adhesive injection process. It is a figure which shows the movement path of the nozzle in the adhesive injection process. It is a figure explaining the removal (liquid drainage) of the residual liquid adhesive by a liquid draining member. It is a figure which shows the adhesive deposited on the surface of a liquid draining member. It is a figure explaining the method of changing the contact part of the residual liquid adhesive about the liquid draining member. It is another figure explaining the method of changing the contact part of the residual liquid adhesive about the liquid draining member.

(Embodiment)
Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the assembled battery 1 according to the embodiment. FIG. 2 is a plan view of the holder 20 constituting the assembled battery 1. FIG. 3 is an enlarged plan view of the holding hole 21 of the holder 20. FIG. 4 is an enlarged partial cross-sectional view of the assembled battery 1. Note that FIG. 4 shows a partial cross section of the assembled battery 1 in which the holder 20 is cut at the position XX of FIG. Therefore, the cross section of the holder 20 in FIG. 4 corresponds to the XX cross section of FIG. Further, also in FIGS. 5, 6 and 9, which will be described later, the cross section of the holder 20 shows the cross section cut at the position XX of FIG.

As shown in FIG. 1, the assembled battery 1 of the present embodiment includes a holder 20 and a plurality of cells 10 fixed to the holder 20.
The cell 10 is a cylindrical (cylindrical) lithium ion secondary battery (specifically, a 18650 type lithium ion secondary battery). The cell 10 is a single battery and includes a cylindrical battery case 11 and an electrode body (not shown) and a non-aqueous electrolytic solution (not shown) housed inside the battery case 11. The electrode body is a wound electrode body wound in a cylindrical shape with a band-shaped separator (not shown) interposed between a band-shaped positive electrode plate (not shown) and a band-shaped negative electrode plate (not shown).

One end surface (lower surface in FIGS. 1 and 4) of the cell 10 in the axial direction AH (direction along the axis AX of the cell 10, vertical direction in FIGS. 1 and 4) is a positive electrode plate of the electrode body inside the cell. A convex positive electrode terminal 12 that electrically connects to the positive electrode terminal 12 is provided. Further, the other end surface (upper surface in FIGS. 1 and 4) of the cell 10 in the axial direction AH is a negative electrode terminal 13 that is electrically connected to the negative electrode plate of the electrode body inside the cell.

The holder 20 is made of a flat metal member (specifically, aluminum) (see FIGS. 1 to 4), and has a first surface 20b (lower surface in FIGS. 1 and 4) facing in the opposite direction. It has two surfaces 20c (upper surface in FIGS. 1 and 4). The holder 20 is formed with a plurality of holding holes 21 (the same number as the cell 10), which are holes penetrating between the first surface 20b and the second surface 20c. As shown in FIG. 2, these holding holes 21 are arranged side by side in a houndstooth pattern in a plan view of the holder 20.

In this embodiment, a holding hole 21 having a groove 22 is formed as the holding hole 21 of the holder 20. The holding hole 21 is formed between the first surface 20b and the second surface 20c of the holder 20 in a part of the circumferential direction of the cylindrical (specifically, an oblique cylindrical shape whose inner peripheral surface is a tapered surface). A groove 22 extending from the intermediate position M1 to the second surface 20c is added (formed) (see FIG. 4). That is, the holding hole 21 has a cylindrical cylindrical space A1 (see FIG. 3) extending from the first surface 20b to the second surface 20c of the holder 20 and a part of the cylindrical space A1 in the radial direction (radial outside). It is a groove portion 22 adjacent to the upper right side in FIG. 3), and is composed of a groove portion 22 extending from an intermediate position M1 which is a position between the first surface 20b and the second surface 20c to the second surface 20c. There is.

The groove portion 22 is formed at a position facing the holding hole 21 in the radial direction (see FIG. 3). The groove portion 22 has a substantially V-shaped plan view and is composed of a groove forming surface 22h that extends straight in the thickness direction of the holder 20 (the axial direction BH of the holding hole 21 and the vertical direction in FIG. 4). The groove forming surface 22h extends from an intermediate position M1 which is a position between the first surface 20b and the second surface 20c of the holder 20 to the second surface 20c (see FIG. 4). Therefore, the groove portion 22 is a groove that opens only on the second surface 20c side of the holder 20. The groove forming surface 22h is a part of the hole inner peripheral surface 21h forming the holding hole 21 in the holder 20.

In the present embodiment, as shown in FIG. 4, the outer diameter D3 of the cell 10 is the minimum inner diameter of the holding hole 21 (specifically, the first opening which is the opening end on the first surface 20b side of the holding hole 21). It is made smaller than the inner diameter D1) of the end 21f. As a result, the cell 10 can be inserted into the holding hole 21. Specifically, a part of the cell 10 is inserted into the holding hole 21.

Further, as shown in FIG. 4, the assembled battery 1 of the present embodiment is located in the gap G between the outer peripheral surface 10b of the cell 10 and the inner peripheral surface 21h of the holder 20 forming the holding hole 21. It has an adhesive 30 that has been injected and solidified. As a result, each cell 10 is fixed to the holder 20 in a manner of being held by the holder 20 via the adhesive 30 (joined to the inner peripheral surface 21h of the hole forming the holding hole 21 via the adhesive 30). ing.

Therefore, in the assembled battery 1 of the present embodiment, even when vibration or impact is applied to the assembled battery 1, the cell 10 is in the radial direction (horizontal direction in FIG. 4) and the axial direction BH (holding hole 21) of the holding hole 21. It does not move in the direction along the axis BX, or in the vertical direction in FIG. 4, and no rattling occurs between the cell 10 and the holder 20. Therefore, the assembled battery 1 of the present embodiment is surely the assembled battery in which the cell 10 is fixed to the holder 20 (holding hole 21).

In the present embodiment, in order to reduce the amount of the adhesive 30 used, the adhesive 30 is spread over the entire depth direction of the holding hole 21 (thickness direction of the holder 20, vertical direction in FIG. 4) (holder 20). (From the first surface 20b to the second surface 20c) is not arranged. Specifically, the adhesive 30 is arranged only in the range from the intermediate position M2, which is the position between the first surface 20b and the second surface 20c of the holder 20, to the first surface 20b.

Next, a method of manufacturing the assembled battery of the present embodiment will be described.
FIG. 5 is a diagram illustrating a cell insertion step according to the embodiment. 6 to 9 are views for explaining the adhesive injection step according to the embodiment. FIG. 10 is a diagram showing a movement path of the nozzle in the adhesive injection step according to the embodiment. FIG. 11 is a schematic front view of the liquid draining device according to the embodiment, and is a diagram illustrating a method of removing (draining) the residual liquid adhesive by the liquid draining member. FIG. 12 is a diagram showing an adhesive deposited on the surface of the liquid draining member. 13 and 14 are schematic plans of the liquid draining device according to the embodiment, and are views for explaining a method of changing the contact portion of the residual liquid adhesive with respect to the liquid draining member.

First, a predetermined number of cells 10 and holders 20 are prepared. Then, in the cell insertion step, as shown in FIG. 5, the cell 10 is inserted into the holding hole 21 of the holder 20. Specifically, the cell 10 is inserted into the holding hole 21 from the first surface 20b side of the holder 20 with the second surface 20c of the holder 20 facing upward (the first surface 20b is downward). The cell 10 is inserted into the holding hole 21 from the negative electrode terminal 13 side, and is shown in a state where the position of the negative electrode terminal 13 (bottom surface of the cell 10) coincides with the second surface 20c of the holder 20 in the axial direction BH. It is temporarily held by a jig that does not (see FIG. 6). In this way, the holder 20 (referred to as the injection target 40) in which the cell 10 is inserted into the holding hole 21 is arranged at a predetermined position (position shown in FIG. 10) in order to perform the next adhesive injection step. Will be done.

Next, the process proceeds to the adhesive injection step, and the liquid adhesive 30 is injected into the gap G between the outer peripheral surface 10b of the cell 10 and the hole inner peripheral surface 21h of the holder 20 using the nozzle 50. As shown in FIG. 6, the nozzle 50 has a discharge port 51 at its tip (lower end in FIG. 6) for discharging the liquid adhesive 30. The nozzle 50 is connected to a dispenser (not shown).

Specifically, as shown in FIGS. 6 to 8, the injection target 40 (holding hole 21) is arranged with the second surface 20c of the holder 20 facing upward (the first surface 20b is downward). The liquid adhesive 30 is injected into each gap G of the holder 20) in which the cell 10 is inserted from the second surface 20c side (above the holder 20) of the holder 20. More specifically, the discharge port 51 of the nozzle 50 that discharges the liquid adhesive 30 is a gap portion that is a part of the annular gap G in the circumferential direction (a part of the circumferential CH, a part of the circumferential CH). The adhesive is injected into the gap K by discharging the liquid adhesive 30 downward from the discharge port 51 of the nozzle 50 in a state of being arranged above K (injection space).

Here, the movement path P of the nozzle 50 in the adhesive injection step will be described in detail with reference to FIG. 10 and the like. First, prior to starting the movement of the nozzle 50, the standby station 70 (standby place) is used to replace the adhesive 30 remaining in the nozzle 50 with a new adhesive 30 when the previous adhesive injection step is completed. At the standby position 71 (see FIG. 10), the adhesive 30 remaining in the nozzle 50 is discharged downward from the discharge port 51 in a posture in which the discharge port 51 is directed downward. In the present embodiment, as the adhesive 30, a two-component mixed type epoxy resin adhesive that cures by mixing two liquids of a main agent and a curing agent is used. Therefore, the adhesive 30 remaining in the nozzle 50 when the previous adhesive injection step is completed is being cured. Therefore, when starting a new adhesive injection step, the adhesive 30 remaining in the nozzle 50 is discharged from the discharge port 51, and a new liquid adhesive 30 that has not been cured is discharged into the nozzle 50. Introduce (two liquids of main agent and curing agent).

Next, the nozzle 50 moves from the standby position 71 to the holder 20 (injection object 40) in which the cell 10 is inserted in the holding hole 21, as shown in FIG. 10, with the discharge port 51 facing downward. do. As shown in FIG. 10, among the movement paths P of the nozzle 50, the path of moving from the standby position 71 to the injection target 40 (the holder 20 in which the cell 10 is inserted in the holding hole 21) is the first. 1 Let it be the movement path P1.

As shown in FIG. 10, in the present embodiment, the liquid draining device 60 is arranged in the middle of the first movement path P1. The liquid draining device 60 includes a liquid draining member 61, two supporting members 65 and 65 that support the liquid draining member 61, and a container 68 (see FIG. 11). Of these, the support member 65 has a cylindrical shape and is fixed in a manner extending in the vertical direction. An annular groove 65b is formed in the circumferential direction on the upper end side of the outer peripheral surface of the support member 65. The two support members 65, 65 are arranged so as to be separated by a predetermined distance.

Further, the liquid draining member 61 is made of rubber and has a ring shape (annular shape). In this embodiment, an O-ring made of EPDM is used as the liquid draining member 61. As will be described later, the liquid draining member 61 is used as a liquid drainer with respect to the liquid adhesive 30 (residual liquid adhesive 31) remaining (residual) at the tip (lower end in FIG. 11) of the nozzle 50. It is a member that removes (separates) the residual liquid adhesive 31 from the nozzle 50 when the liquid draining member 61 comes into contact with the nozzle 50.

In the liquid draining member 61, two portions 61f and 61g in the circumferential direction (two portions of the liquid draining member 61 facing each other in the radial direction) are arranged in the groove portions 65b of the support members 65 and 65, respectively (the liquid draining member 61). It is supported by two support members 65, 65 in a state of being elastically extended in the circumferential direction of the liquid draining member 61 so as to be fitted). In other words, there are two liquid draining members 61 in such a manner that the elastic restoring force of the liquid draining member 61 causes two peripheral parts 61f and 61g to be in close contact with the groove portions 65b of the two support members 65 and 65. It is supported by the support members 65 and 65 of the above.

More specifically, the liquid draining member 61 first moves so that the nozzle 50 that moves in the first movement path P1 with the discharge port 51 facing downward passes above the liquid draining member 61. It is arranged at a position in the middle of the route P1 (see FIG. 10). Specifically, in the liquid draining member 61, when the nozzle 50 moving in the first movement path P1 passes above the liquid draining member 61 with the discharge port 51 facing downward, the nozzle 50 drains the liquid. The residual liquid adhesive 31 is arranged at a position (height) in contact with the liquid draining member 61 without contacting the member 61 (see FIG. 11). Here, the residual liquid adhesive 31 remains (residual) at the tip of the nozzle 50 (outside the discharge port 51) in a manner of being exposed (leaked) from the discharge port 51 of the nozzle 50 to the outside (downward). It is a liquid adhesive 30.

Therefore, when the nozzle 50 starts moving from the standby position 71, if the residual liquid adhesive 31 is present in the discharge port 51 of the nozzle 50, it remains at a position in the middle of the first movement path P1. The liquid adhesive 31 comes into contact (collision) with the liquid draining member 61. As a result, the liquid draining member 61 can remove (drain) the residual liquid adhesive 31 from the nozzle 50. Therefore, it is possible to reduce the residual liquid adhesive 31 from falling (dripping) from the discharge port in the middle of the first movement path P1. More specifically, after the nozzle 50 passes above the liquid draining member 61 and before it reaches above the gap K (injection space) of the injection target 40, the tip of the nozzle 50 (discharge port). It is possible to prevent the liquid adhesive 30 from falling from 51). The portion of the liquid draining member 61 that the residual liquid adhesive 31 contacts in the middle of the first movement path P1 is referred to as the first contact portion 61b.

As described above, the nozzle 50 moves in the first movement path P1 with the discharge port 51 facing downward, and the discharge port 51 of the nozzle 50 has a plurality of gaps K (injection space) of the injection target 40. ) When the adhesive 30 is first injected above the gap K1 (the gap K located at the upper left in FIG. 10), the liquid adhesive 30 is discharged downward from the discharge port 51 of the nozzle 50. Then, the adhesive 30 is injected into the gap K1. After that, as shown by an arrow in FIG. 10, the discharge port 51 of the nozzle 50 is sequentially moved above the other gaps K, and the liquid adhesive 30 is injected into each gap K.

Specifically, as shown in FIGS. 6 to 8, of the inner peripheral surface 21h of the hole forming the holding hole 21, between the groove forming surface 22h forming the groove portion 22 and the outer peripheral surface 10b of the cell 10. The liquid adhesive 30 is injected into the gap K (the gap K corresponds to a part of the gap G between the outer peripheral surface 10b of the cell 10 and the inner peripheral surface 21h of the holder 20 in the circumferential direction). .. More specifically, above the gap K of the injection target 40 (holder 20 into which the cell 10 is inserted) arranged with the second surface 20c facing upward (the first surface 20b facing downward). The adhesive 30 is discharged from the second surface (20c side) toward the groove portion 22. Specifically, as shown in FIG. 6, in a state where the discharge port 51 of the nozzle 50 is arranged vertically above the groove 22, the liquid adhesive 30 is discharged vertically downward from the discharge port 51 of the nozzle 50. Then, the liquid adhesive 30 is injected into the gap K.

The amount of the adhesive 30 injected into one gap K (that is, the total amount of the adhesive 30 discharged from the nozzle 50 with respect to one groove 22) is a predetermined amount. Further, the position of the nozzle 50 is fixed during the period during which the adhesive 30 is injected into the gap K (during the period during which the adhesive 30 is discharged from the discharge port 51 of the nozzle 50). Note that FIG. 6 is a diagram when the injection of the adhesive 30 is started.

Further, as shown in FIG. 7, the discharge port 51 of the nozzle 50 (indicated by the two-dot chain line circle in FIG. 7) is made smaller than the opening 22b of the groove portion 22 (the portion indicated by cross-hatching in FIG. 7). There is. As a result, the adhesive 30 can be appropriately injected into the groove portion 22 (inside the gap portion K). Note that FIG. 7 is a view showing a state when the adhesive 30 is discharged from the discharge port 51 of the nozzle 50 toward the groove 22 in the adhesive injection step, and corresponds to the plan view (top view) of FIG. do.

Further, in the present embodiment, in the adhesive injection step, the liquid adhesive 30 having a viscosity in the range of 1 to 500 mPa · s is injected into the gap K. By injecting such a low-viscosity adhesive 30, the adhesive 30 can easily enter the gap K, and the adhesive 30 can be quickly injected into the gap K. As a result, the total amount (specified amount) of the adhesive 30 to be injected into each gap K can be injected at once in a short time.

Further, in the holder 20 of the present embodiment, the inner diameter D1 of the circular first opening end 21f, which is the opening end on the first surface 20b side of the holding hole 21, is the opening end on the second surface 20c side of the holding hole 21. It is made smaller than the minimum inner diameter D2 (inner diameter of the portion where the groove 22 is not formed) of the second opening end 21g having a circular shape (see FIGS. 3 and 4). As a result, as will be described later, the adhesive 30 is injected into the gap G from the second surface 20c side of the holder 20 with the second surface 20c of the holder 20 facing upward (the first surface 20b is downward). After that, the adhesive 30 is less likely to drip downward from the first surface 20b side.

Moreover, in the holder 20 of the present embodiment, the portion of the inner peripheral surface 21h of the hole forming the holding hole 21 except for the groove forming surface 22h forming the groove portion 22 faces from the first surface 20b side to the second surface 20c side. It has a tapered surface 21t whose inner diameter increases as the inner diameter increases (see FIGS. 4 and 8). Therefore, after the adhesive 30 is injected into the gap G from the second surface 20c side of the holder 20 as described above, the adhesive 30 easily flows to the first surface 20b side along the tapered surface 21t. Therefore, it becomes easy to arrange the adhesive 30 in the gap G.

As shown by the arrow in FIG. 8, the liquid adhesive 30 injected into the gap K moves in the gap G in the circumferential direction CH due to the capillary phenomenon, and moves downward in the gap G. I will move. As a result, the liquid adhesive 30 can be arranged over the entire circumferential CH of the gap G in the range from the intermediate position M2 of the holder 20 to the first surface 20b (see FIG. 9). After that, the adhesive 30 arranged in each gap G is solidified, so that each cell 10 is joined to the inner peripheral surface 21h of the hole forming the holding hole 21 via the adhesive 30. It is fixed to the holder 20. As a result, the assembled battery 1 of the present embodiment is completed.

After injecting the liquid adhesive 30 into all the gaps K of the injection target 40 as described above, the nozzle 50 moves to the standby position 71 with the discharge port 51 facing downward. When the nozzle 50 returns to the standby position 71, the adhesive injection step is completed. As shown in FIG. 10, among the movement paths P of the nozzle 50, the path of moving from the injection target 40 to the standby position 71 after the injection of the adhesive 30 into all the gaps K is completed. Let it be the second movement path P2.

As shown in FIG. 10, in the present embodiment, the liquid draining device 60 is also arranged in the middle of the second movement path P2. In other words, the second movement path P2 is set so that the liquid draining device 60 is arranged in the middle of the second movement path P2. The liquid draining device 60 is arranged in the middle of the first movement path P1. That is, in the present embodiment, one liquid draining device 60 is arranged at a position in the middle of the first movement path P1 and in the middle of the second movement path P2.

Specifically, the path portion of the first movement path P1 in the range passing above the drainage device 60 and the path portion of the second movement path P2 in the range passing above the drainage device 60 match ( The direction of travel is opposite) (see FIG. 10). In addition, in FIG. 10, in order to distinguish between the first movement path P1 and the second movement path P2, the path portion extending in the left-right direction in FIG. 10 of the first movement path P1 and the second movement path P2 is shown in FIG. Although the figures are shown separated from each other in No. 10, the path portions actually overlap on the same straight line.

Therefore, the liquid draining member 61 of the liquid draining device 60 has a second so that the nozzle 50 that moves in the second moving path P2 with the discharge port 51 facing downward passes above the liquid draining member 61. It is arranged at a position in the middle of the movement path P2 (see FIG. 10). Specifically, in the liquid draining member 61, when the nozzle 50 moving in the second movement path P2 passes above the liquid draining member 61 with the discharge port 51 facing downward, the nozzle 50 drains the liquid. The residual liquid adhesive 31 is arranged at a position (height) in contact with the liquid draining member 61 without contacting the member 61 (see FIG. 11).

Therefore, when the nozzle 50 that has finished injecting the adhesive 30 into all the gaps K starts moving from the injection target object 40 to the standby position 71, the residual liquid adhesive is injected into the discharge port 51 of the nozzle 50. When 31 is present, the residual liquid adhesive 31 comes into contact (collision) with the liquid draining member 61 at a position in the middle of the second movement path P2. As a result, the liquid draining member 61 can remove (drain) the residual liquid adhesive 31 from the nozzle 50. Therefore, it is possible to reduce the residual liquid adhesive 31 from falling (dripping) from the discharge port in the middle of the second movement path P2. More specifically, after the nozzle 50 passes above the liquid draining member 61 and before reaching the standby position 71, the liquid adhesive 30 falls from the tip of the nozzle 50 (discharge port 51). Can be prevented. The portion of the liquid draining member 61 that the residual liquid adhesive 31 contacts in the middle of the second movement path P2 is referred to as the second contact portion 61c.

Further, in the present embodiment, when the nozzle 50 moving in the first movement path P1 passes above the liquid draining member 61, the discharge port 51 of the nozzle 50 has an oval shape supported by the support members 65 and 65. Moves above the minor axis of the drainage member 61 in the minor axis direction DM (left and right direction in FIG. 10) (moves in the minor axis direction DM so as to pass above the center of the drainage member 61 (FIGS. 10 and 10). 13) Similarly, when the nozzle 50 moving in the second movement path P2 passes above the liquid draining member 61, the discharge port 51 of the nozzle 50 has an oval shape supported by the support members 65 and 65. It moves above the minor axis of the drainage member 61 in the minor axis direction DM (left and right direction in FIG. 10) (moves in the minor axis direction DM so as to pass above the center of the drainage member 61).

Therefore, in the present embodiment, among the liquid draining members 61, the first contact portion 61b (the portion where the residual liquid adhesive 31 comes into contact in the middle of the first movement path P1) and the second contact portion 61c (the second movement path). The portion where the residual liquid adhesive 31 comes into contact in the middle of P2) is arranged at a position facing the DM in the minor axis direction with respect to the center of the oval-shaped liquid draining member 61 supported by the support members 65, 65. (See FIGS. 10 and 13).

By the way, when the residual liquid adhesive 31 comes into contact with the liquid draining member 61 and the residual liquid adhesive 31 is separated from the nozzle 50, at least a part of the separated residual liquid adhesive 31 adheres to the liquid draining member 61. It may fall without. On the other hand, the liquid draining device 60 of the present embodiment includes a container 68 arranged below the liquid draining member 61. The container 68 has a bottomed tubular shape (box shape) having an opening 68b that opens upward. The opening region of the opening 68b of the container 68 is a region including the first contact portion 61b and the second contact portion 61c of the liquid draining member 61 in a plan view (see FIG. 10). Therefore, in the present embodiment, the adhesive 30 that has fallen due to contact with the liquid draining member 61 among the residual liquid adhesive 31 can be received and accommodated in the container 68.

Further, when the residual liquid adhesive 31 is removed (drained) by the liquid draining member 61, a part of the residual liquid adhesive 31 may adhere to the surface of the liquid draining member 61. Therefore, with the use of the liquid draining device 60 (that is, the implementation of the adhesive injection step), the adhesive 30 (a part of the residual liquid adhesive 31) adhering to the surface of the liquid draining member 61 is solidified. As shown in 12, the adhesive 30 may accumulate on the surface of the liquid draining member 61. If the adhesive 30 is deposited on the surface of the liquid draining member 61 in this way, the liquid draining member 61 may not be able to properly remove (drain) the residual liquid adhesive 31.

On the other hand, the liquid draining device 60 of the present embodiment includes a ring-shaped liquid draining member 61 (O-ring made of EPDM) as the liquid draining member 61. Further, the liquid draining device 60 can change the portion (position) of the liquid draining member 61 in contact with the residual liquid adhesive 31 by moving (rotating) the ring-shaped liquid draining member 61 in the circumferential direction. It is configured in.

Specifically, the liquid draining member 61 is hung on the outer circumferences (grooves 65b, 65b) of the two supporting members 65, 65 and elastically extends in the circumferential direction of the liquid draining member 61 to lengthen the length. It is supported by two support members 65, 65 in a state of being elastically deformed into a circular shape (see FIG. 13). In other words, the liquid draining member 61 has two support members 65, 65, and the groove portion 65b of the two supporting members 65, 65, due to the elastic restoring force of the liquid draining member 61 elastically extended in the circumferential direction. It is supported by two support members 65, 65 in a manner of being in close contact with the two support members 65, 65. The first contact portion 61b and the second contact portion 61c, which are the portions of the liquid drain member 61 that come into contact with the residual liquid adhesive 31, are the oval-shaped liquid drain members 61 supported by the support members 65 and 65. It is a portion facing the DM in the minor axis direction with respect to the center (see FIG. 13).

Therefore, in the liquid draining device 60 of the present embodiment, the oval-shaped liquid draining member 61 supported by the support members 65, 65 is manually moved in the circumferential direction (as shown by an arrow in FIG. 13). Can be rotated). Thereby, the portion of the liquid draining member 61 facing the DM in the minor axis direction with respect to the center of the oval-shaped liquid draining member 61 supported by the support members 65, 65 can be changed. As a result, with respect to the liquid draining member 61, the portions (first contact portion 61b and second contact portion 61c) where the residual liquid adhesive 31 comes into contact can be changed (see FIG. 14).

Specifically, the solidified adhesive 30 is deposited on the surface of the liquid draining member 61, and the liquid draining member 61 may not be able to properly remove (drain) the residual liquid adhesive 31. In this case, as shown by the arrow in FIG. 13, the oval-shaped liquid draining member 61 supported by the support members 65 and 65 is moved (rotated) in the circumferential direction, and as shown in FIG. The portion (first contact portion 61b and second contact portion 61c) to which the residual liquid adhesive 31 contacts can be changed to a portion (unused portion) to which the adhesive 30 does not adhere. As a result, the liquid draining member 61 can appropriately remove (drain) the residual liquid adhesive 31.

In the present embodiment, when the nozzle 50 passes above the liquid draining member 61 with the discharge port 51 facing downward, the liquid draining member 61 and the tip of the nozzle 50 (the liquid draining member 61) It is arranged at a position (height) where the gap dimension between the lower end and the lower end is C (see FIG. 11). Therefore, for example, the height H (see FIG. 12) of the adhesive 30 deposited on the surface (upper surface) of the liquid draining member 61 reaches the gap dimension C between the liquid draining member 61 and the tip (lower end) of the nozzle 50. In this case, the liquid draining member 61 may not be able to properly remove (drain) the residual liquid adhesive 31.

Therefore, when the height H of the adhesive 30 reaches the gap dimension C, the oval-shaped liquid draining member 61 supported by the support members 65 and 65 is moved in the circumferential direction as described above (as described above). It is preferable to change the portion (first contact portion 61b and second contact portion 61c) to which the residual liquid adhesive 31 comes into contact with a portion (unused portion) to which the adhesive 30 does not adhere by rotating). 13 and FIG. 14). As a result, the liquid draining member 61 can appropriately remove (drain) the residual liquid adhesive 31. In this way, the parts where the residual liquid adhesive 31 comes into contact (first contact part 61b and second contact part 61c) are sequentially changed to parts where the adhesive 30 does not adhere (unused parts). By using the liquid draining member 61 over the entire circumference, the residual liquid adhesive 31 can be appropriately removed (drained) by one liquid draining member 61 for a long period of time.

Further, in the present embodiment, the liquid draining member 61 made of EPDM is used as the liquid draining member 61. Since the surface of the liquid draining member 61 made of EPDM has low wettability, the adhesive 30 is unlikely to adhere to the surface of the liquid draining member 61, and the solidified adhesive 30 is unlikely to be deposited. As a result, the time (period) required for the height H of the adhesive 30 to reach the gap dimension C can be lengthened. Therefore, "the liquid draining member 61 is moved (rotated) in the circumferential direction to make the first contact. It is possible to reduce the frequency of "work for changing the portion 61b and the second contact portion 61c".

Further, even when the solidified adhesive 30 is deposited on the surface of the liquid draining member 61, the deposited adhesive 30 can be easily peeled off from the surface of the liquid draining member 61. Therefore, by peeling off the adhesive 30 deposited on the surface of the liquid draining member 61 and using it, one liquid draining member 61 continues to remove (drain) the residual liquid adhesive 31 for a longer period of time. be able to.

In the above, the present invention has been described according to the embodiment, but it goes without saying that the present invention is not limited to the above embodiment and can be appropriately modified and applied without departing from the gist thereof.

For example, in the embodiment, an example in which a liquid draining member 61 made of EPDM is used as the liquid draining member is shown. However, the material of the liquid draining member is not limited to EPDM, and any material other than EPDM, such as rubber, resin, and metal, may be used. However, the surface of the liquid draining member is preferably made of a material having low wettability (EPDM, fluororubber, PTFE, etc.).

Further, in the embodiment, the case where the injection target 40 of the adhesive 30 is the holder 20 in which the cell 10 is inserted in the holding hole 21 is shown. However, the injection target is not limited to the holder 20 in which the cell 10 is inserted in the holding hole 21, and any object having one or more injection spaces into which the liquid adhesive is injected can be used. It may be an object of.

Further, in the embodiment, an example is shown in which a two-component mixed type epoxy resin adhesive, which is a type that cures by mixing two liquids of a main agent and a curing agent, is used as the adhesive 30. However, the adhesive is not limited to this, and any adhesive may be used.

Further, in the embodiment, among the movement paths P of the nozzle 50, a position in the middle of the first movement path P1 in which the nozzle 50 moves from the standby position 71 to the injection target object 40, and a position where the nozzle 50 is in the standby position from the injection target object 40. The liquid draining member 61 is arranged at a position in the middle of the second movement path P2 that moves to 71. However, the liquid draining member 61 may be arranged only at a position in the middle of the first movement path P1. In order to do so, for example, regarding the movement path P of the nozzle 50 according to the embodiment, the second movement path P2 is set to a path that does not cross the liquid draining member 61 (for example, the nozzle 50 is the liquid draining device 60 in FIG. 10). You can change it to a route that passes underneath. Alternatively, the liquid draining member 61 may be arranged only at a position in the middle of the second movement path P2.

1 set Battery 10 Cell 20 Holder 20b 1st surface 20c 2nd surface 21 Holding hole 30 Adhesive 31 Residual liquid adhesive 40 Injection target 50 Nozzle 51 Discharge port 60 Draining device 61 Draining member 61b 1st contact part (residual) The part that the liquid adhesive comes into contact with)
61c Second contact part (part where residual liquid adhesive comes into contact)
65 Support member 68 Container 70 Standby station 71 Standby position G Gap K Gap (injection space)
P movement route P1 first movement route P2 second movement route

Claims (1)

A liquid draining device including a liquid draining member and a support member for supporting the liquid draining member.
The liquid adhesive is a liquid adhesive that remains at the tip of the nozzle as a liquid drainer so as to be exposed to the outside from the discharge port of a nozzle having a discharge port at the tip of the liquid adhesive. It is a member that removes the residual liquid adhesive by contacting the liquid draining member with the residual liquid adhesive.
The nozzle moves from the standby position to an injection target having one or a plurality of injection spaces into which the liquid adhesive is injected, with the discharge port facing downward, and the nozzle enters the injection space. It is configured to return to the standby position after injecting a liquid adhesive.
The liquid draining member is
Ring-shaped,
A position in the middle of the first movement path in which the nozzle moves from the standby position to the injection target object so that the nozzle that moves with the discharge port facing downward passes above the liquid draining member. , And, at least one of the positions in the middle of the second movement path in which the nozzle moves from the injection target to the standby position, and
When the nozzle passes above the liquid draining member with the discharge port facing downward, the residual liquid adhesive comes into contact with the liquid draining member without the nozzle contacting the liquid draining member. It is placed in the position to
The liquid drainer is
A liquid draining device configured so that a portion of the liquid draining member in contact with the residual liquid adhesive can be changed by moving the ring-shaped liquid draining member in the circumferential direction.

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