JP2018020482A - Resin material joining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a resin material joining method capable of simplifying a step of joining one resin material and the other resin material. A first main body portion 10A of a resin member 10 is held by a first jig 14, and a second main body portion 12A of a resin member 12 is held by a second jig 16. Then, while the flange portion 10B of the resin member 10 presses the joined portion 12B of the resin member 12, the flange portion 10B and the joined portion 12B are relatively vibrated. As a result, the flange portion 10B is melted by frictional heat due to friction between the tip portion of the flange portion 10B and the contact portion of the joined portion 12B with the tip portion, and the flange portion 10B and the joined portion 12B are separated from each other. It will be welded. [Selection diagram] Figure 1

Description

  The present invention relates to a method for joining resin materials.

  Patent Document 1 listed below discloses an invention related to a method for joining fiber-reinforced thermoplastic resin composites. In this fiber-reinforced thermoplastic resin composite joining method, one resin material and the other resin material are joined by welding. Specifically, when one resin material and the other resin material are joined, the protrusion formed in the joint portion of one resin material is pushed into the joint portion of the other resin material softened by preheating, These joints are heated and melted. For this reason, in the prior art described in Patent Document 1 below, it is possible to suppress a decrease in the mechanical strength of the joint between one resin material and the other resin material.

JP 2007-283324 A

  However, in the case of the prior art described in Patent Document 1, before joining one resin material and the other resin material, a step of providing a protrusion on one resin material or a step of preheating the other resin material Is required. For this reason, there is room for improvement in terms of making the process of joining one resin material and the other resin material simpler.

  In view of the above facts, an object of the present invention is to obtain a resin material joining method capable of simplifying the process of joining one resin material and the other resin material.

  The resin material joining method according to the first aspect of the present invention includes a thermoplastic resin and reinforcing fibers that are aligned in one direction, and is configured in a plate shape. The first main body portion and the first main body portion. The first main body portion of one resin member provided with a flange portion bent in the plate thickness direction and extending from the first main body portion, and a reinforcing fiber aligned with the thermoplastic resin in one direction The second body portion of the other resin member having a second body portion and a joined portion extending from the second body portion, and the flange portion. The flange portion and the bonded portion are brought into contact with each other in a state in which the fiber direction of the bonded portion and the fiber direction of the bonded portion are orthogonal, and the flange portion and the bonded portion are relatively vibrated and welded. .

  According to this invention of Claim 1, the 1st main-body part of the one resin member comprised by the plate shape including the thermoplastic resin and the reinforced fiber arranged in one direction, The thermoplastic resin, A second main body portion of the other resin member configured in a plate shape including the reinforcing fibers aligned in one direction is gripped.

  And the flange part bent from the plate | board thickness direction of the 1st main-body part and extended from the said 1st main-body part and the to-be-joined part extended from the 2nd main-body part are the fiber direction of the said flange part, and the said While being contacted in a state where the fiber direction of the bonded portion is orthogonal, it is relatively vibrated. Thereby, the flange part is melted and welded to the joined part by frictional heat generated by friction between the tip part of the flange part and the contact part of the joined part with the tip part. Moreover, since the fiber direction of the flange portion and the fiber direction of the bonded portion are orthogonal, the reinforcing fiber of the flange portion is bonded to the bonded portion in the process of welding the flange portion and the bonded portion. Go into the reinforced fiber.

  As a result, one resin member and the other resin member can be bonded to each other without processing or preheating the one resin member and the other resin member, and the bonding strength of the bonding portion of these resin members is also improved. Can be secured.

  As described above, the resin material joining method according to the first aspect of the present invention is superior in that the process of joining one resin material and the other resin material can be simplified. Has an effect.

It is a side view which shows the relationship between the welding apparatus used for the joining method of the resin material which concerns on this embodiment, and a resin member. It is sectional drawing which shows the positional relationship of one resin member and the other resin member of the state arrange | positioned at the welding apparatus used for the joining method of the resin material which concerns on this embodiment, (A) is relative of these members. The positional relationship is shown, (B) has shown the relative positional relationship of the reinforced fiber which each comprises some of these members. In the joining method of the resin material which concerns on this embodiment, the process in which one resin member and the other resin member are joined is shown, (A), (B), (C) in order from the start of a joining process. It is sectional drawing shown as).

  Hereinafter, an example of an embodiment of a resin material joining method according to the present invention will be described with reference to FIGS. As shown in FIG. 1, this resin material joining method is used for joining “resin member 10” as one resin member and “resin member 12” as the other resin member. And the welding apparatus 18 comprised including the 1st jig | tool 14 and the 2nd jig | tool 16 which can hold | grip the board | plate material of the thickness of a predetermined range is used for the joining of the resin member 10 and the resin member 12. FIG. ing.

  As shown in FIG. 2B, each of the resin members 10 and 12 is formed in a plate shape including “thermoplastic resin 20” and “carbon fibers 22” as reinforcing fibers aligned in one direction. Has been. In other words, the resin members 10 and 12 are made of thermoplastic CFRP (carbon fiber reinforced resin). More specifically, the resin member 10 is bent in the thickness direction of the “first main body portion 10A” that can be gripped by the first jig 14 and the first main body portion 10A, and is extended from the first main body portion 10A. “Flange portion 10B”. On the other hand, the resin member 12 includes a “second body portion 12A” that can be gripped by the second jig 16, and a “joined portion 12B” that extends from the second body portion 12A as it is. That is, the resin member 10 has a bent plate shape, and the resin member 12 has a flat plate shape. Note that fibers made of various materials such as glass fibers can be used as the reinforcing fibers.

  Further, the welding device 18 is configured to be able to adjust the relative position between the first jig 14 and the second jig 16. In addition, the welding device 18 includes a drive unit (not shown), and in a state where the resin members 10 and 12 are arranged, the first main body 10A and the second main body 10A are moved toward the second jig 16. The main body 12A can be moved in the thickness direction. In this state, the welding device 18 can relatively vibrate the first jig 14 and the second jig 16. In other words, the welding device 18 can be used to connect the resin member 10 with the welding device 18. The resin member 12 can be vibrated relatively.

(Operation and effect of this embodiment)
Next, the operation and effect of this embodiment will be described.

  In the present embodiment, as shown in FIG. 1, when the resin member 10 and the resin member 12 are joined by the welding device 18, first, the first main body portion 10 </ b> A of the resin member 10 is moved by the first jig 14. While being gripped, the second body portion 12 </ b> A of the resin member 12 is gripped by the second jig 16. And as FIG. 2 (A) and FIG.2 (B) show, the flange part 10B of the resin member 10 and the to-be-joined part 12B of the resin member 12 are the fiber direction of the said flange part 10B, and the to-be-joined part. The positions of the first jig 14 and the second jig 16 are adjusted so that they are in contact with the fiber direction of 12B orthogonal to each other.

  In this state, as shown in FIG. 1 and FIG. 3A, the first jig 14 is directed toward the second jig 16 in the thickness direction of the first main body 10A and the second main body 12A. While being moved, the first jig 14 and the second jig 16 are relatively vibrated. Specifically, the first jig 14 is vibrated in the arrow X direction (paper surface direction) in FIG. Thereby, the flange portion 10B of the resin member 10 to which the pressing force F is applied presses the bonded portion 12B of the resin member 12, and the flange portion 10B and the bonded portion 12B are relatively vibrated.

  Then, the flange portion 10B is melted by frictional heat caused by friction between the tip portion of the flange portion 10B and the contact portion between the tip portion of the joined portion 12B, and the flange portion 10B and the joined portion 12B are welded. It will be done. Note that the direction of relative vibration between the flange portion 10B and the bonded portion 12B is not limited to that described above, and any direction can be used as long as frictional heat can be generated between the flange portion 10B and the bonded portion 12B. It may be a direction. Further, as shown in FIG. 3B, as the welding between the flange portion 10B and the joined portion 12B proceeds, the carbon fibers 22 of the flange portion 10B enter the carbon fibers 22 of the joined portion 12B. . Further, as shown in FIG. 3C, even after the flange portion 10B is welded to the joined portion 12B, the resin member 10 enters a predetermined depth toward the resin member 12 side, and the resin member 10 Part of the first main body 10A and the second main body 12A of the resin member 12 are welded. Note that the burr 24 generated at this time is appropriately removed as necessary.

  As a result, the resin member 10 and the resin member 12 can be joined without processing or preheating the resin member 10 and the resin member 12. Therefore, in this embodiment, the process of joining one resin material and the other resin material can be made simpler. In addition, since the carbon fibers 22 of the flange portion 10B enter the carbon fibers 22 of the bonded portion 12B, the bonding strength of the bonding portion between the resin member 10 and the resin member 12 can be ensured. Here, the term “joining strength” refers to the shear strength [MPa] of the joint portion between the resin member 10 and the resin member 12.

10 Resin member (one resin member)
10A 1st main-body part 10B Flange part 12 Resin member (the other resin member)
12A Second body portion 12B Joined portion 20 Thermoplastic resin 22 Carbon fiber (reinforced fiber)

Claims (1)

It is configured in a plate shape including a thermoplastic resin and reinforcing fibers that are aligned in one direction, and is bent in the thickness direction of the first main body portion and the first main body portion and is extended from the first main body portion. The first main body portion of one resin member provided with a flange portion,
The other resin member comprising a thermoplastic resin and a reinforcing fiber aligned in one direction and configured in a plate shape, and having a second main body portion and a bonded portion extending from the second main body portion. Gripping the second main body,
In the state where the fiber direction of the flange portion and the fiber direction of the bonded portion are orthogonal to each other, the flange portion and the bonded portion are contacted,
Welding by relatively vibrating the flange portion and the joined portion;
Resin material joining method.