Connecting device
The bonding device addresses the challenge of uniform biasing force application and cable protection by employing a rotating biasing member system, ensuring stable laser operation during direction changes.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- DAIHEN CORP
- Filing Date
- 2024-12-02
- Publication Date
- 2026-06-12
AI Technical Summary
Existing laser beam nozzle devices face issues with uniform biasing force application on workpieces, which can cause damage to cables connected to the laser irradiation unit when the device rotates to change the moving direction.
A bonding device with a forward and rear biasing member system, allowing relative rotation of these members with respect to the workpiece heating unit, using a rotating press body to apply uniform biasing force without rotating the laser irradiation unit, thereby preventing cable damage.
Uniform biasing force is applied to workpieces while minimizing cable damage, ensuring stable operation of the laser irradiation unit during direction changes.
Smart Images
Figure 2026095802000001_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a bonding device.
Background Art
[0002] For example, Japanese Patent Application Laid-Open No. 2-307693 discloses a laser beam nozzle device including a nozzle body and a work pressing device. The work pressing device has a cylindrical work pressing body and a plurality of free bearings provided on the lower surface of the work pressing body. Each free bearing is made of a hard rubber ball.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In the laser beam nozzle device described in Japanese Patent Application Laid-Open No. 2-307693, it is desirable to make the biasing force applied to the work uniform, for example, to ensure a large pressing area. For this purpose, it is conceivable to bias the work with a roller instead of a sphere. However, when the work is biased with a roller, the entire device needs to rotate to change the moving direction of the laser. In this case, there is a concern that the cable connected to the laser irradiation unit will be twisted and the cable will be damaged.
[0005] An object of the present disclosure is to provide a bonding device capable of making the biasing force of the work uniform while suppressing damage to the cable connected to the laser irradiation unit.
Means for Solving the Problems
[0006] A joining apparatus according to one aspect of the present disclosure comprises: a workpiece heating unit capable of heating workpieces to be joined together and movable relative to the workpieces; a forward biasing member provided in front of the workpiece heating unit in the direction of movement of the workpiece heating unit relative to the workpieces and biasing the workpieces; a rear biasing member provided behind the workpiece heating unit in the direction of movement and biasing the workpieces; and a holding member that holds the forward biasing member and the rear biasing member so as to allow relative rotation of the forward biasing member and the rear biasing member relative to the workpiece heating unit, wherein each of the forward biasing member and the rear biasing member is capable of applying a biasing force to the workpieces. The device comprises a biasing unit, a support connected to the biasing unit, and a rotating press body supported by the support so as to be rotatable relative to the support, which presses the workpiece, wherein the rotating press body has a rotation axis supported by the support, which extends in a direction perpendicular to both the direction of movement and the biasing direction of the biasing force, and a press body body that presses the workpiece while rotating around the rotation axis, and the holding member holds the front biasing member and the rear biasing member so as to rotate around a rotation center axis perpendicular to both the direction of movement and the rotation axis, and which passes through the workpiece heating section. [Effects of the Invention]
[0007] According to this disclosure, it is possible to provide a bonding apparatus that can uniformly apply biasing force to a workpiece while suppressing damage to the cable connected to the laser irradiation section. [Brief explanation of the drawing]
[0008] [Figure 1] This is a perspective view of a bonding device in one embodiment of the present disclosure. [Figure 2] This is a cross-sectional view of the joining device shown in Figure 1. [Modes for carrying out the invention]
[0009] Embodiments of this disclosure will be described with reference to the drawings. In the drawings referred to below, the same or equivalent components are given the same number.
[0010] Figure 1 is a perspective view of a joining device in one embodiment of the present disclosure. Figure 2 is a cross-sectional view of the joining device shown in Figure 1. The joining device 1 of this embodiment is particularly suitable for joining a workpiece W1 made of resin and a workpiece W2 made of metal. However, the objects to be joined by the joining device 1 are not particularly limited. Each workpiece W1, W2 is not limited to being flat, but may also be curved.
[0011] As shown in Figure 1, the joining device 1 can join workpieces W1 and W2 placed on a support base 10, for example. The joining device 1 can also join workpieces W1 and W2 while they are held by a three-dimensionally movable actuator (not shown). The joining device 1 may be a laser joining device or a resistance heating joining device. The joining device 1 may also be a device having a different heating source than these. The following explanation will use a laser joining device as an example.
[0012] As shown in Figures 1 and 2, the joining device 1 comprises a workpiece heating section 100, a rear biasing member 200R, a front biasing member 200F, and a holding member 400.
[0013] The workpiece heating unit 100 is capable of heating the workpieces W1 and W2 that are joined together. In this embodiment, a laser irradiation unit (hereinafter referred to as "laser irradiation unit 100") is used as the workpiece heating unit 100. The laser irradiation unit 100 is capable of irradiating a laser L toward the workpieces W1 and W2. In this embodiment, the laser irradiation unit 100 irradiates the workpieces W1 and W2 with the laser L such that the irradiation direction of the laser L is perpendicular to the workpieces W1 and W2. However, the irradiation direction of the laser L does not have to be perpendicular to the workpieces W1 and W2. As shown in Figure 1, a cable 150 is connected to the laser irradiation unit 100. The cable 150 is made of, for example, a fiber optic cable.
[0014] The forward biasing member 200F is positioned in front of the laser irradiation unit 100 in the direction of movement of the laser irradiation unit 100 relative to the workpieces W1 and W2. The forward biasing member 200F is connected to the holding member 400. The forward biasing member 200F can apply a biasing force to the workpieces W1 and W2.
[0015] The rear biasing member 200R is located behind the laser irradiation unit 100 in the direction of movement of the laser irradiation unit 100 relative to the workpieces W1 and W2. The rear biasing member 200R is connected to the holding member 400. The rear biasing member 200R can apply a biasing force to the workpieces W1 and W2.
[0016] In this embodiment, the forward biasing member 200F and the rear biasing member 200R have substantially the same structure. Specifically, the rear biasing member 200R has a configuration symmetrical to the forward biasing member 200F, with the plane perpendicular to the direction of movement of the laser irradiation unit 100 and passing through the irradiation point P (see Figure 1) as the reference plane. For this reason, the forward biasing member 200F will be used as an example in the following explanation.
[0017] The forward biasing member 200F includes a biasing unit 210 (see Figure 2), a support 220, and a rotating pressing body 230.
[0018] The biasing unit 210 of the forward biasing member 200F is attached to the outer holding portion 420 (described later) of the holding member 400. The biasing unit 210 can adjust the biasing force applied to the workpieces W1 and W2. In this embodiment, the biasing unit 210 is composed of an air cylinder. However, the biasing unit 210 is not limited to an air cylinder. As shown in Figure 2, the biasing unit 210 has a cylinder 211, a piston 212, a rod 213, and a gas passage 214.
[0019] The rod 213 extends from the piston 212 toward the support 220. The end of the rod 213 (the lower end in the orientation shown in Figure 2) is connected to the support 220.
[0020] The gas flow path 214 is connected to each space partitioned by the piston 212 within the cylinder 211. Through this gas flow path 214, the supply of gas (for example, air) into the cylinder 211 and the discharge of gas from the cylinder 211 are performed. The tip of the gas flow path 214 is connected to a pump or the like.
[0021] The support 220 is connected to the end of the biasing unit 210. The support 220 has a portion connected to the rod 213 and a portion that supports the rotary pressing body 230.
[0022] The rotary pressing body 230 is supported by the support 220 so as to be rotatable with respect to the support 220. The rotary pressing body 230 has a rotary shaft 232 and a pressing body main body 234.
[0023] The rotary shaft 232 is supported by the support 220. The rotary shaft 232 extends in a direction orthogonal to both the moving direction of the laser irradiation unit 100 and the biasing direction of the biasing force (the direction orthogonal to the plane of the paper in FIG. 2).
[0024] The pressing body main body 234 is supported by the rotary shaft 232 so as to be relatively rotatable with respect to the rotary shaft 232. The pressing body main body 234 presses the workpieces W1, W2 while rotating around the rotary shaft 232. In the present embodiment, a roller made of metal is used as the pressing body main body 234. The pressing body main body 234 makes line contact with the workpieces W1, W2.
[0025] The holding member 400 is connected to the laser irradiation unit 100. The holding member 400 holds the forward biasing member 200F and the rear biasing member 200R so as to allow relative rotation of the forward biasing member 200F and the rear biasing member 200R with respect to the laser irradiation unit 100. More specifically, the holding member 400 holds the forward biasing member 200F and the rear biasing member 200R so as to rotate about a rotational axis AX (see Figure 2) that is perpendicular to both the direction of movement and the rotation axis 232 of the laser irradiation unit 100 and passes through the laser irradiation unit 100. The holding member 400 has an inner holding portion 410, an outer holding portion 420, and a plurality of spheres 430.
[0026] The inner holding portion 410 is fixed to the laser irradiation portion 100. The inner holding portion 410 has a shape that surrounds the workpiece heating portion 100. The inner holding portion 410 is formed in an annular shape.
[0027] The outer retaining portion 420 is rotatable around the rotational axis AX relative to the inner retaining portion 410. The outer retaining portion 420 has a shape that surrounds the inner retaining portion 410. The outer retaining portion 420 is formed in an annular shape that is slightly larger than the inner retaining portion 410. The forward biasing member 200F and the rear biasing member 200R are fixed to the outer retaining portion 420.
[0028] Multiple spheres 430 are arranged between the inner holding portion 410 and the outer holding portion 420. The multiple spheres 430 are arranged at equal intervals around the rotational axis AX. The multiple spheres 430 allow the outer holding portion 420 to rotate relative to the inner holding portion 410.
[0029] As described above, in the joining device 1 of this embodiment, the holding member 400 holds the biasing members 200F and 200R so that they rotate around the rotational axis AX. Therefore, when changing the direction of movement of the laser irradiation unit 100, it is possible to rotate the biasing members 200F and 200R in accordance with the direction of movement of the laser irradiation unit 100 without rotating the laser irradiation unit 100 around the rotational axis AX. Thus, it is possible to make the biasing force on the workpieces W1 and W2 by the biasing members 200F and 200R uniform while suppressing the rotation of the cable 150 connected to the laser irradiation unit 100 and the resulting damage to the cable 150.
[0030] Those skilled in the art will understand that the above-described exemplary embodiments are specific examples of the following embodiments.
[0031] [Aspect 1] A workpiece heating unit capable of heating workpieces to be joined together and movable relative to the workpieces, A forward biasing member is provided in front of the workpiece heating unit in the direction of movement of the workpiece heating unit relative to the workpiece, and biases the workpiece. A rear biasing member is provided behind the workpiece heating section in the aforementioned direction of movement and biases the workpiece, The system includes a holding member that holds the forward biasing member and the rear biasing member so as to allow relative rotation of the forward biasing member and the rear biasing member with respect to the workpiece heating section, Each of the aforementioned forward biasing member and the aforementioned rearward biasing member is, A biasing unit capable of applying a biasing force to the workpiece, A support connected to the biasing unit, It includes a rotating pressing body that is supported on the support so as to be rotatable with respect to the support and presses the workpiece, The rotating pressing body is A rotating shaft extending in a direction perpendicular to both the direction of movement and the biasing direction of the biasing force, and the rotating shaft supported by the support, It has a pressing body that presses the workpiece while rotating around the rotation axis, A joining device in which the holding member holds the forward biasing member and the rear biasing member so that they rotate around a rotational center axis passing through the workpiece heating section, and the holding member is perpendicular to both the direction of movement and the axis of rotation.
[0032] In this joining device, the holding member holds the biasing members so that each biasing member rotates around the rotational axis. Therefore, when changing the direction of movement of the workpiece heating section, it is possible to rotate each biasing member in accordance with the direction of movement of the workpiece heating section without rotating the workpiece heating section around the rotational axis. Thus, it is possible to make the biasing force on the workpiece uniform by each biasing member while suppressing the rotation of the cable connected to the workpiece heating section and the resulting damage to the cable.
[0033] [Aspect 2] The aforementioned retaining member is Having a shape that surrounds the workpiece heating section, and an inner holding section fixed to the workpiece heating section, It includes an outer holding portion having a shape that surrounds the inner holding portion and being rotatable about the rotation center axis relative to the inner holding portion, The joining device according to embodiment 1, wherein each of the biasing units is fixed to the outer holding portion.
[0034] [Aspect 3] The joining device according to embodiment 1 or 2, further comprising a cable connected to the workpiece heating section.
[0035] It should be noted that the embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than by the description of the embodiments above, and further includes all modifications within the meaning and scope equivalent to the claims. [Explanation of Symbols]
[0036] 1 Joining device, 100 Workpiece heating section (laser irradiation section), 150 Cable, 200F Forward biasing member, 200R Rear biasing member, 210 Biasing unit, 211 Cylinder, 212 Piston, 213 Rod, 214 Gas flow path, 220 Support, 230 Rotating press, 232 Rotating shaft, 234 Press body, 400 Holding member, 410 Inner holding part, 420 Outer holding part, 430 Sphere, AX Rotational central axis, L Laser, W1,W2 Workpiece.
Claims
1. A workpiece heating unit capable of heating workpieces to be joined together and movable relative to the workpieces, A forward biasing member is provided in front of the workpiece heating unit in the direction of movement of the workpiece heating unit relative to the workpiece, and biases the workpiece. A rear biasing member is provided behind the workpiece heating section in the aforementioned direction of movement and biases the workpiece, The system includes a holding member that holds the forward biasing member and the rear biasing member so as to allow relative rotation of the forward biasing member and the rear biasing member with respect to the workpiece heating section, Each of the aforementioned forward biasing member and the aforementioned rearward biasing member is, A biasing unit capable of applying a biasing force to the workpiece, A support connected to the biasing unit, It includes a rotating pressing body that is supported on the support so as to be rotatable with respect to the support and presses the workpiece, The rotating pressing body is A rotating shaft extending in a direction perpendicular to both the direction of movement and the biasing direction of the biasing force, and the rotating shaft supported by the support, It has a pressing body that presses the workpiece while rotating around the rotation axis, A joining device in which the holding member holds the forward biasing member and the rear biasing member so that they rotate around a rotational center axis passing through the workpiece heating section, and the holding member is perpendicular to both the direction of movement and the axis of rotation.
2. The joining apparatus according to claim 1, further comprising a cable connected to the workpiece heating section.