JP2020133787A - Manufacturing method of composite member - Google Patents

Abstract

To provide a manufacturing method of a composite member, in which unnecessary adhesives is reduced so as to improve manufacturing efficiency when a composite member is manufactured by bonding a plurality of panels.SOLUTION: A manufacturing method of a composite member includes: an application step where a paste-like adhesive is applied onto a first constituent panel 21 so that an adhesive layer 51 is arranged between the first constituent panel 21 and a flange part 32 of a second constituent panel 31, and a pressing step where the adhesive layer 51 is pressed by narrowing the distance between the first constituent panel 21 and the flange part 32 of the second constituent panel 31. In the application step, the adhesive layer 51 is applied in a manner that a larger volume is applied to the side of a connecting part 34 more than the volume applied onto the side of a distal end 32b of the flange part 32 and that the adhesive layer protrudes toward the side of the connecting part 34 beyond the flange part 32. In the pressing step, the adhesive layer 51 is pressed so that the adhesive flows beyond the connecting part 34 of the second constituent panel 31 to a wall part 33.SELECTED DRAWING: Figure 4

Description

The present invention relates to a method for manufacturing a composite member.

Conventionally, a frame structure in which an outer panel and an inner panel are joined with an adhesive is known (Patent Document 1). In the frame structure of Patent Document 1, the adhesive is arranged so as to protrude from the portion between the flange of the outer panel and the inner panel to the hollow portion side of the frame structure.

JP-A-2010-064669

In the above-mentioned conventional frame structure, in addition to the adhesive placed in the portion between the flange of the outer panel and the inner panel, each panel is adhered by the adhesive protruding from between the flange and the inner panel toward the hollow portion. There is. It is desirable that the frame structure has an adhesive portion protruding from between the flange of the outer panel and the inner panel toward the hollow portion side from the viewpoint of enhancing the rigidity and vibration damping of the frame structure. However, when forming the adhesive portion protruding toward the hollow portion of the frame structure, the adhesive also flows out to the side opposite to the hollow portion, so that the adhesive flows out from between the flange of the outer panel and the inner panel to the outside of the flange portion. The adhesive may squeeze out excessively. In this case, the process of removing the excessively squeezed adhesive becomes complicated, which may lead to a decrease in the manufacturing efficiency of the composite member.

The present invention has been made in view of such circumstances, and an object of the present invention is to reduce unnecessary adhesives and improve manufacturing efficiency when manufacturing a composite member by bonding a plurality of panels. It is an object of the present invention to provide the manufacturing method of the composite member.

The method for manufacturing a composite member that solves the above problems is a method for manufacturing a composite member that manufactures the composite member by joining the first constituent panel and the second constituent panel with a paste-like adhesive. The second configuration panel includes a flange portion arranged along the first configuration panel, a wall portion arranged to stand upright with respect to the first configuration panel, and the flange portion and the wall portion. The manufacturing method applies the adhesive to the first constituent panel so as to dispose the adhesive layer between the first constituent panel and the flange portion. The flange is provided with a coating step and a pressing step of pressing the adhesive layer by narrowing the distance between the first constituent panel and the flange portion, and is on the opposite side of the connecting portion in the coating step. The adhesive layer is arranged so that the coating amount on the connecting portion side is larger than the coating amount on the tip edge side of the portion and the adhesive layer protrudes from the flange portion toward the connecting portion side, and in the pressing step, the connecting portion is pressed. The adhesive layer is pressed so that the adhesive flows over the wall portion.

According to this method, when the adhesive layer arranged as described above is pressed in the coating step to flow the adhesive over the connecting portion to the wall portion, the adhesive flows toward the tip edge of the flange portion. Can be relatively suppressed. As a result, it is possible to reduce the adhesive in which the adhesive excessively protrudes from the tip edge of the flange portion, that is, the unnecessary adhesive.

In the pressing step in the method for manufacturing the composite member, it is preferable to press the adhesive so that the adhesive protrudes from the tip edge of the flange portion.
By this method, the squeezed adhesive and the protruding portion where the adhesive is cured can be more easily recognized than the adhesive located between the first constituent panel and the flange portion. Therefore, for example, by utilizing the visual recognition of the protruding adhesive or the protruding portion, it is possible to easily perform an inspection for confirming whether or not the application of the adhesive has been completed.

In the method for manufacturing a composite member, the connecting portion is preferably a curved portion formed by bending a plate material.
According to this method, the adhesive easily flows along the curved surface of the connecting portion, so that the adhesive can easily reach the wall portion.

In the method for manufacturing a composite member, the adhesive layer is arranged on the flange portion side of the first adhesive layer and the first adhesive layer laminated on the first constituent panel, and the first adhesive layer is formed. A second adhesive layer having a width dimension smaller than the width dimension of the agent layer is included, and the second adhesive layer is arranged at a position biased toward the connection portion side with respect to the first adhesive layer. Is preferable.

According to this method, it is possible to easily form an adhesive layer in which the coating amount on the connecting portion side is larger than the coating amount on the tip edge side as described above.
In the method for manufacturing a composite member, the second constituent panel is preferably a hat-shaped panel having the flange portions on both sides and having a hat-shaped cross section.

According to this method, for example, a composite member having increased rigidity can be obtained by a second constituent panel.
In the method for manufacturing a composite member, the first constituent panel is preferably a floor panel of a vehicle.

According to this method, it is possible to obtain a composite member having improved rigidity and vibration damping property of the floor panel of the vehicle.

According to the present invention, it is possible to reduce unnecessary adhesives and improve manufacturing efficiency when manufacturing a composite member by adhering a plurality of panels.

It is a top view which shows the composite member of an embodiment. It is a partial cross-sectional view along line 2-2 of FIG. It is sectional drawing explaining the coating process in the manufacturing method of a composite member. (A) and (b) are sectional views explaining the pressing process in the manufacturing method of a composite member.

Hereinafter, embodiments of a method for manufacturing a composite member will be described with reference to the drawings.
First, the structure of the composite member will be described.
As shown in FIGS. 1 and 2, the composite member 11 has a first constituent panel 21 and a second constituent panel 31 attached to the first constituent panel 21. The first constituent panel 21 is, for example, a floor panel of a vehicle, and the shape of the first constituent panel 21 is a rectangular shape in a plan view having a long side in the front-rear direction of the vehicle. The second constituent panel 31 is, for example, a reinforcing panel for reinforcing the floor panel, and the shape of the second constituent panel 31 is a long shape extending in the vehicle width direction. The number of the second constituent panels 31 with respect to the first constituent panels 21 may be singular or plural.

The second configuration panel 31 has a flange portion 32 arranged along the first configuration panel 21, a wall portion 33 arranged to stand upright with respect to the first configuration panel 21, and a flange portion 32 and a wall. It has a connecting portion 34 for connecting to the portion 33. In the present embodiment, a hat-shaped panel having flange portions 32 on both sides and a hat-shaped cross section is used as the second configuration panel 31. Each flange portion 32 extends along the length direction of the second constituent panel 31. Each flange portion 32 has a proximal edge 32a connected to the connecting portion 34 and a tip edge 32b which is a side edge of the second configuration panel 31.

The second configuration panel 31, which is a hat-type panel, connects a pair of wall portions 33, and is a ceiling portion extending along the length direction of the second configuration panel 31 at a position separated from the first configuration panel 21. Has 35.

As shown in FIG. 2, the composite member 11 further includes an adhesive portion 41 for adhering the first constituent panel 21 and the second constituent panel 31. The adhesive portion 41 is formed by curing a paste-like adhesive. The adhesive portion 41 includes an adhesive main body 42 arranged between the first component panel 21 and the flange 32, a first protruding portion 43 protruding from the adhesive main body 42 toward the connection portion 34, and an adhesive main body 42. It has a second protruding portion 44 that protrudes from the connecting portion 34 to the opposite side.

The first protruding portion 43 adheres the first constituent panel 21 and the connecting portion 34, and adheres the first constituent panel 21 and the wall portion 33. The second protruding portion 44 protrudes outward from the tip edge 32b of the flange portion 32, that is, outward from the outer edge located on the side opposite to the connecting portion 34. The second protruding portion 44 is visible in a plan view of the composite member 11 as viewed from the side of the second constituent panel 31.

The first constituent panel 21 and the second constituent panel 31 are made of, for example, a plate material (for example, a metal plate material such as a steel plate). The connecting portion 34 of the second configuration panel 31 of the present embodiment is a curved portion formed by bending a plate material. The bending angle θ on the outer peripheral side that bulges out at the curved portion of the second configuration panel 31 is preferably, for example, 20 ° or more and 85 ° or less.

Next, a method of manufacturing the composite member 11 will be described.
As shown in FIGS. 3 and 4, the composite member 11 is obtained by joining the first constituent panel 21 and the second constituent panel 31 with a paste-like adhesive. The method for manufacturing the composite member 11 includes a coating step of applying a paste-like adhesive to the first constituent panel 21 so as to arrange the adhesive layer 51 between the first constituent panel 21 and the flange portion 32, and a first method. It includes a pressing step of pressing the adhesive layer 51 by narrowing the distance between the configuration panel 21 and the flange portion 32.

The paste-like adhesive used in the coating process contains, for example, a main polymer, a curing agent, a plasticizer, and a filler. Examples of the main polymer include epoxy-based resin materials and rubber-based materials. Examples of the rubber-based material include BR (butadiene rubber), SBR (styrene / butadiene rubber), NBR (nitrile rubber) and the like. Examples of the curing agent include dicyandiamide and sulfur. Examples of the plasticizer include phthalates, aliphatic esters and the like. Examples of the filler include calcium carbonate, silica and the like.

As shown in FIG. 3, in the coating step, the adhesive layer 51 is formed by applying a paste-like adhesive to the first constituent panel 21. In the coating process, the coating amount on the connecting portion 34 side is larger than the coating amount on the tip edge 32b side of the flange portion 32 on the opposite side of the connecting portion 34, and the coating amount protrudes toward the connecting portion 34 side from the flange portion 32. The adhesive layer 51 is arranged.

The adhesive layer 51 of the present embodiment is arranged on the flange portion 32 side of the first adhesive layer 51a and the first adhesive layer 51a laminated on the first constituent panel 21, and is the first adhesive layer 51a. It includes a second adhesive layer 51b having a width dimension (second width dimension W2) smaller than the width dimension (first width dimension W1). The width dimension is a dimension along the direction from the base end edge 32a of the flange portion 32 toward the tip end edge 32b.

In the coating step, the second adhesive layer 51b is laminated at a position biased toward the connection portion 34 with respect to the first adhesive layer 51a. Here, in FIG. 3, the straight line passing through the center in the width direction of the first adhesive layer 51a is defined as the first center line CL1, and the straight line passing through the center in the width direction of the second adhesive layer 51b is the second center. It is shown as line CL2. The second adhesive layer 51b is laminated on the first adhesive layer 51a so that the second center line CL2 is located closer to the connecting portion 34 than the first center line CL1. Further, the adhesive layer 51 is arranged so as to protrude toward the connecting portion 34 from the proximal end edge 32a of the flange portion 32 connected to the connecting portion 34.

The first adhesive layer 51a and the second adhesive layer 51b can be formed by discharging and applying a paste-like adhesive from a nozzle having an opening having a predetermined size. That is, the coating step can be performed using a well-known coating machine equipped with a nozzle and a dispenser.

As shown in FIGS. 4A and 4B, in the pressing step, the adhesive layer 51 is pressed so that the adhesive flows over the connecting portion 34 of the second configuration panel 31 to the wall portion 33. .. As shown in FIG. 4B, in the pressing step of the present embodiment, the adhesive is pressed so that the adhesive protrudes from the tip edge 32b of the flange portion 32. By curing the adhesive after the pressing step, the composite member 11 shown in FIG. 2 is obtained. The curing of the adhesive may be carried out under heated conditions or under non-heated conditions.

Next, the action and effect of this embodiment will be described.
(1) The method for manufacturing the composite member 11 includes a coating step of applying an adhesive to the first constituent panel 21 so as to arrange the adhesive layer 51 between the first constituent panel 21 and the flange portion 32, and a first method. It includes a pressing step of pressing the adhesive layer 51 by narrowing the distance between the configuration panel 21 and the flange portion 32. In the coating process, the coating amount on the connecting portion 34 side is larger than the coating amount on the tip edge 32b side of the flange portion 32 on the opposite side of the connecting portion 34, and the coating amount protrudes toward the connecting portion 34 side from the flange portion 32. The adhesive layer 51 is arranged. In the pressing step, the adhesive layer 51 is pressed so that the adhesive flows beyond the connecting portion 34 to the wall portion 33.

According to this method, when the adhesive layer 51 arranged as described above in the coating step is flowed over the connecting portion 34 to the wall portion 33 in the pressing step, it reaches the tip edge 32b of the flange portion 32. It is possible to relatively suppress the flow of the adhesive toward it. This makes it possible to reduce the amount of adhesive that the adhesive excessively protrudes from the tip edge 32b of the flange portion 32, that is, the amount of unnecessary adhesive. Therefore, by adhering a plurality of panels (first constituent panel 21 and second constituent panel 31), it is possible to reduce unnecessary adhesives and improve manufacturing efficiency when manufacturing the composite member 11.

Further, according to the above method, an adhesive portion 41 to which all of the flange portion 32, the connection portion 34, and the wall portion 33 of the second configuration panel 31 are adhered to the first configuration panel 21 is formed. With this adhesive portion 41, the rigidity and vibration damping property of the composite member 11 can be improved.

(2) In the pressing step, the adhesive is pressed so that the adhesive protrudes from the tip edge 32b of the flange portion 32. In this case, the protruding adhesive and the protruding portion (second protruding portion 44) on which the adhesive is cured should be more easily visible than the adhesive located between the first constituent panel 21 and the flange portion 32. Can be done. Therefore, by utilizing the protruding adhesive and the visual recognition of the second protruding portion 44, it is possible to easily perform an inspection for confirming whether or not the application of the adhesive has been completed.

(3) The connecting portion 34 of the second configuration panel 31 is a curved portion formed by bending a plate material. In this case, since the adhesive easily flows along the curved surface of the connecting portion 34, the adhesive can be easily reached to the wall portion 33. As a result, it becomes possible to easily manufacture the composite member 11 in which the first constituent panel 21 and the wall portion 33 of the second constituent panel 31 are adhered to each other.

(4) The adhesive layer 51 is arranged on the flange portion 32 side of the first adhesive layer 51a and the first adhesive layer 51a laminated on the first constituent panel 21, and is the first of the first adhesive layer 51a. It includes a second adhesive layer 51b having a second width dimension W2 smaller than the width dimension W1 of 1. The second adhesive layer 51b is arranged at a position biased toward the connection portion 34 with respect to the first adhesive layer 51a. In this case, as described above, the adhesive layer 51 can be easily formed in which the coating amount on the connecting portion 34 side is larger than the coating amount on the tip edge 32b side. As a result, the coating process can be easily performed, so that the manufacturing efficiency of the composite member 11 can be further improved.

(5) The second configuration panel 31 is a hat-shaped panel having flange portions 32 on both sides and having a hat-shaped cross section. In this case, for example, the composite member 11 having increased rigidity can be obtained by the second constituent panel 31.

(6) The first configuration panel 21 is a floor panel of a vehicle. In this case, for example, it is possible to obtain the composite member 11 having improved rigidity and vibration damping of the floor panel of the vehicle.
(Change example)
The above embodiment may be modified as follows. The present embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

The first configuration panel 21 is not limited to the floor panel, and may be, for example, a roof reinforcement panel, a lid reinforcement panel, a hat type panel, or the like. That is, the first configuration panel 21 is to which the second configuration panel 31 having the flange portion 32 and the like is attached, and the use and shape of the first configuration panel 21 may be changed.

The second configuration panel 31 is not limited to a panel extending in the vehicle width direction with respect to the floor panel as the first configuration panel 21, and is a direction other than the vehicle width direction such as a panel extending in the front-rear direction of the vehicle. It may be a panel extending to. Further, the second configuration panel 31 is not limited to the hat type panel. That is, the second configuration panel 31 may have a shape having a flange portion 32, a connection portion 34, and a wall portion 33, and the second configuration panel 31 is attached to, for example, the first configuration panel 21. The panel may not form a hollow portion in the state. Examples of such a second configuration panel 31 include a bulkhead and the like.

-The adhesive layer 51 formed in the coating step is not limited to the two-layer structure, and may have a structure of three or more layers. Even in this case, since the adhesive layer 51 includes the first adhesive layer 51a and the second adhesive layer 51b, the coating amount on the connection portion 34 side is larger than the coating amount on the tip edge 32b side of the flange portion 32. It becomes easy to increase the amount. Further, the adhesive layer 51 may be composed of a plurality of adhesive layers arranged side by side along the first constituent panel 21, or may be composed of a single adhesive layer. Even in this case, the coating amount on the connecting portion 34 side can be increased more than the coating amount on the tip edge 32b side of the flange portion 32.

The connecting portion 34 of the second configuration panel 31 may be changed to a connecting portion in which the plate material forming the flange portion 32 and the plate material forming the wall portion 33 or the like are joined by a joining method such as welding.
The adhesive after the pressing step may be arranged on the base end edge 32a side of the tip end edge 32b without protruding from the tip edge 32b of the flange portion 32 of the second constituent panel 31.

-The manufacturing method of the composite member 11 may further include a step of joining the first constituent panel 21 and the second constituent panel 31 by using spot welding or the like in addition to the step of joining the first constituent panel 21 and the second constituent panel 31 using the above adhesive. Good. That is, the composite member 11 may have a welded portion using, for example, spot welding, as a joint portion other than the bonded portion 41 using the above-mentioned adhesive.

11 ... Composite member, 21 ... First component panel, 31 ... Second component panel, 32 ... Flange part, 32a ... Base end edge, 32b ... Tip edge, 33 ... Wall part, 34 ... Connection part, 35 ... Ceiling part, 41 ... Adhesive part, 42 ... Adhesive body part, 43 ... First protruding part, 44 ... Second protruding part, 51 ... Adhesive layer, 51a ... First adhesive layer, 51b ... Second adhesive layer, W1 ... First 1 width dimension, W2 ... second width dimension, CL1 ... first center line, CL2 ... second center line, θ ... bending angle.

Claims (6)

A method for manufacturing a composite member, which manufactures a composite member by joining the first constituent panel and the second constituent panel with a paste-like adhesive.
The second configuration panel includes a flange portion arranged along the first configuration panel, a wall portion arranged to stand upright with respect to the first configuration panel, and the flange portion and the wall portion. Has a connection part to connect with,
The manufacturing method includes a coating step of applying the adhesive to the first constituent panel so that an adhesive layer is arranged between the first constituent panel and the flange portion.
A pressing step of pressing the adhesive layer by narrowing the distance between the first constituent panel and the flange portion is provided.
In the coating step, the coating amount on the connection portion side is larger than the coating amount on the tip edge side of the flange portion on the side opposite to the connection portion, and the coating amount is larger than the flange portion on the connection portion side. Place the adhesive layer,
A method for manufacturing a composite member, in which in the pressing step, the adhesive layer is pressed so that the adhesive flows over the connecting portion to the wall portion. The method for manufacturing a composite member according to claim 1, wherein in the pressing step, the adhesive is pressed so that the adhesive protrudes from the tip edge of the flange portion. The method for manufacturing a composite member according to claim 1 or 2, wherein the connecting portion is a curved portion formed by bending a plate material. The adhesive layer is
The first adhesive layer laminated on the first constituent panel and
A second adhesive layer arranged on the flange portion side of the first adhesive layer and having a width dimension smaller than the width dimension of the first adhesive layer is included.
The second adhesive layer is
The method for manufacturing a composite member according to any one of claims 1 to 3, wherein the composite member is arranged at a position biased toward the connection portion with respect to the first adhesive layer. The method for manufacturing a composite member according to any one of claims 1 to 4, wherein the second constituent panel is a hat-shaped panel having the flange portions on both sides and having a hat-shaped cross section. The method for manufacturing a composite member according to any one of claims 1 to 5, wherein the first constituent panel is a floor panel of a vehicle.