Laser spot welding apparatus

Abstract

This invention relates to a laser spot welding processing device, comprising a spot welding fixture, a base, a gripper carrier plate, multiple pneumatic lifting components, multiple gripper assemblies, and a pneumatic supply module. The spot welding fixture is mounted on the base, and the multiple gripper assemblies are mounted on the bottom surface of the gripper carrier plate. The gripper carrier plate is positioned relative to the spot welding fixture and can be raised and lowered relative to the spot welding fixture by connecting the multiple pneumatic lifting components to the pneumatic supply module. This invention improves production efficiency through the use of pneumatic lifting components and a special fixture assembly design, and enhances production quality by pressing two materials tightly together before spot welding. Furthermore, it can be applied to various types of laser spot welding equipment.

Description

[Technical Field]

[0001] This invention relates to the field of laser spot welding equipment, and more particularly to a laser spot welding processing device. It can improve production efficiency by using a pneumatic lifting component and a special clamping group design, and can improve production quality by pressing two materials together tightly before spot welding. In addition, it can be applied to various types of laser spot welding equipment. [Background Technology]

[0002] Note: In recent years, with the booming development of the technology industry, various 3C electronic products have become smaller and smaller, and their functions have become more diverse and complex. Taking wireless headphones as an example, the soldering of charging heads often needs to be completed in a confined space, which greatly increases the difficulty of traditional soldering operations. Generally, solder paste is used to form a solder lock surface on the parts of the circuit board that need to be soldered, similar to the low-temperature solder paste attached to SMT components. Double-sided adhesive is then applied to one side of the circuit board for assembly. The charging head has metal contacts for charging, which are then soldered to the solder lock surface on the circuit board. Before soldering, the circuit board is attached to the charging head with double-sided adhesive. Because the distance between the metal contacts for charging and the solder lock surface is narrow, it is difficult to operate during soldering, resulting in a very high soldering difficulty.

[0003] Therefore, some manufacturers use laser spot welding to improve their production efficiency and yield. Laser welding uses focused laser energy to solder or fuse resin. The laser direction is parallel and has high energy density. Generally, when performing laser spot welding, a manually operated fixture must be used to tightly bond the two materials to be welded. This is done by using a probe with resilience to press the two materials together to form a temporary bond before welding can begin. However, because the probe diameter is very small (approximately 0.8 mm), it is often difficult to control the force during manual operation, resulting in bending and deformation. This causes the probe tip to fail to spring back, further affecting the tight bonding of the two materials and leading to quality problems such as burn-through or spot weld detachment after welding. Therefore, it is necessary to improve the design.

[0004] In view of this, the inventors have specially designed a laser spot welding processing device applicable to various types of optical spot welding equipment. By using a pneumatic lifting component to drive a clamping carrier plate and a special clamping group design with resilience and sturdiness, processing can be carried out in a semi-automatic manner to improve production efficiency. Furthermore, the clamping group can press two welding materials tightly together before spot welding, thereby improving production quality. [Summary of the Invention]

[0005] One objective of this invention is to provide a laser spot welding processing device, comprising a spot welding fixture, a base, a gripper carrier plate, multiple pneumatic lifting components, multiple gripper assemblies, and a pneumatic supply module. The multiple pneumatic lifting components and the pneumatic supply module can synchronously lift and lower the gripper carrier plate and the multiple gripper assemblies, enabling processing relative to the spot welding fixture to improve production efficiency. Furthermore, each gripper assembly provides restoring elasticity through a sturdy gripper and an elastic component, allowing two weldable materials to be pressed tightly together before spot welding, thereby improving production quality.

[0006] To achieve the above objectives, the laser spot welding processing apparatus of the present invention, for pressing two weldable materials to make them fit more tightly and improving the spot welding quality, includes: a spot welding fixture, having multiple positioning parts corresponding to the two weldable materials to position and support the two weldable materials on it; a base for supporting the spot welding fixture; a gripper carrier plate disposed on one side of the spot welding fixture so that they are opposite each other, and the gripper carrier plate having multiple mounting holes corresponding to the parts of the two weldable materials to be welded; multiple pneumatic lifting components, one end of which is fixed to both sides of the base, and the other end of the multiple pneumatic lifting components is connected to the gripper carrier plate to drive the gripper carrier plate to lift and lower relative to the spot welding fixture; and multiple gripper assemblies, each gripping... Each gripper assembly is installed in a corresponding mounting hole, and each gripper assembly includes a mounting block, a gripper, and a spring component. A groove is provided on one side of the mounting block to house the gripper and the spring component. The elastic force of the spring component allows the gripper to have an elastic extension and retraction effect. A pneumatic supply module includes an air supply source, a solenoid valve, and a foot switch. The air supply source is connected to the solenoid valve, and then connected to each pneumatic lifting assembly through the solenoid valve. The foot switch is connected to the solenoid valve. The foot switch is used to control the opening and closing of the solenoid valve to supply air to multiple pneumatic lifting assemblies, thereby driving the gripper carrier plate to rise and fall, so that multiple gripper assemblies can stably and evenly press the two welding objects for spot welding.

[0007] In one embodiment, the laser spot welding processing apparatus of the present invention further includes a sliding platform and a slide rail on the base to limit the sliding platform's movement on the slide rail. A handle is provided on one side of the sliding platform for pulling the sliding platform towards the outside of the gripper carrier plate, or pushing the sliding platform towards the corresponding gripper carrier plate. Furthermore, multiple side plates are provided on both sides of the base corresponding to multiple pneumatic lifting components to form a protective space, enclosing the spot welding fixture, the gripper carrier plate, and the multiple pneumatic lifting components within it.

[0008] Furthermore, the pneumatic lifting assembly includes four guide pillars and two pneumatic cylinders. The four guide pillars are distributed around the base, and four guide holes are formed on the gripper plate to guide the four guide pillars through the guide holes. The two pneumatic cylinders are distributed on both sides of the base, and each pneumatic cylinder has two drive rods connected to the gripper plate. The distance between the four guide pillars corresponds to the size of the sliding platform, so that the gripper plate can move up and down relative to the spot welding fixture. In addition, the two pneumatic cylinders are respectively located on the inner side of two opposite side plates, so that the ends of the two drive rods of each pneumatic cylinder can be connected to the opposite side edge of the gripper plate.

[0009] In another embodiment, the gripper of the present invention has a mounting portion and a pressing portion. The mounting portion is slidably mounted in a groove, and the pressing portion extends from the front end of the mounting portion. The pressing portion is U-shaped to press against both sides of the area to be welded, ensuring a tight fit. Furthermore, at least one limiting rib is provided inside the groove of the mounting block, and the gripper has a limiting groove corresponding to the limiting rib, so that the limiting rib is positioned within the limiting groove during installation, allowing the gripper to move in a defined direction relative to the mounting block.

[0010] In another embodiment, the laser spot welding processing apparatus of the present invention further includes a timer electrically connected to a solenoid valve for setting the opening and closing time of the solenoid valve. More precisely, the timer starts timing after the pedal switch is pressed, and this time is set to the welding time. When the timing time is up, the pedal switch will be released again.

[0011] The specific techniques employed in this invention will be further explained through the following embodiments and accompanying drawings. [Attached Image Description]

[0012] Figure 1 This is an exploded perspective view of a preferred embodiment of the present invention.

[0013] Figure 2 This is a three-dimensional view of the assembled form of a preferred embodiment of the present invention.

[0014] Figure 3 This is a schematic diagram of the state during operation of a preferred embodiment of the present invention (I).

[0015] Figure 4 This is a schematic diagram (II) of the state during operation of a preferred embodiment of the present invention.

[0016] Figure 5 This is a schematic diagram (III) of the state during operation of a preferred embodiment of the present invention.

[0017] Figure 6 This is a schematic diagram (four) showing the state during operation of a preferred embodiment of the present invention.

[0018] Explanation of key component symbols:

[0019] 1. Laser spot welding processing equipment

[0020] 11 Spot welding fixture

[0021] 111 Positioning Department

[0022] 12 bases

[0023] 121 Slide Rail

[0024] 122 Sliding Platform

[0025] 1221 handle

[0026] 123 Side panels

[0027] 124 Protective Space

[0028] 13 Gripper Carrier

[0029] 131 mounting holes

[0030] 132 guide hole

[0031] 14. Pneumatic lifting assembly

[0032] 141 guide post

[0033] 142 pneumatic cylinder

[0034] 1421 Drive lever

[0035] 15 gripper assemblies

[0036] 151 mounting blocks

[0037] 1511 Slide

[0038] 1512 Limiting Rib

[0039] 152 grippers

[0040] 1521 Installation Department

[0041] 15211 Limiting Groove

[0042] 1522 Pressing Department

[0043] 153 Elastic Components

[0044] 16. Air pressure supply module

[0045] 161 Gas Supply Source

[0046] 162 Solenoid Valve

[0047] 163 Pedal Switch

[0048] 164 Timer

[0049] 2 Welded materials

Detailed Implementation Methods

[0050] To fully understand the purpose, features and effects of the present invention, the present invention will be described in detail below with reference to the following specific embodiments and accompanying drawings.

[0051] Please see Figure 1 , Figure 2 and Figures 3-6 The figures above show an exploded perspective view of a preferred embodiment of the present invention, a three-dimensional view of its assembled appearance, and schematic diagrams of its various states during operation. As shown in the figures above, the laser spot welding processing device 1 of the present invention includes a spot welding fixture 11, a base 12, a gripper carrier plate 13, multiple pneumatic lifting components 14, multiple gripper groups 15, and a pneumatic supply module 16, for pressing two weldable materials 2 to make them fit more tightly and improve the spot welding quality.

[0052] The spot welding fixture 11 is provided with multiple positioning parts 111 corresponding to the two welded objects 2, so as to position and support the two spot welded objects 2 on it.

[0053] The base 12 is used to support the spot welding fixture 11, and the top surface of the base 11 is provided with a slide rail 121 for limiting the movement of a sliding platform 122 on it. A handle 1221 is provided on one side of the sliding platform 122 for pulling the sliding platform 122 towards the outside of the gripper carrier plate 13, or pushing the sliding platform 122 towards the corresponding gripper carrier plate 13. In addition, multiple side plates 123 are provided on both sides of the base corresponding to multiple pneumatic lifting components 14 to form a protective space 124, so that the spot welding fixture 11, the fixture carrier plate 13 and the multiple pneumatic lifting components 14 are enclosed within it.

[0054] The gripper carrier plate 13 is disposed on one side of the spot welding fixture 11 so that they are opposite each other, and the gripper carrier plate 13 is provided with multiple mounting holes 131 corresponding to the parts of the two welding objects 2 to be welded.

[0055] The multiple pneumatic lifting components 14 include four guide pillars 141 and two pneumatic cylinders 142. The four guide pillars 141 are distributed around the base 12, and four guide holes 132 are formed on the gripper carrier plate 13 to guide the four guide pillars 141 through the multiple guide holes 132 to form a positioning guide. The two pneumatic cylinders 142 are distributed on both sides of the base 12. Each pneumatic cylinder 142 has two drive rods 1421 connected to the gripper carrier plate 13, one end of which is fixed on both sides of the base 12 to drive the gripper carrier plate 13 to lift relative to the spot welding fixture 11. It should be noted that the distance between the four guide posts 141 of the present invention corresponds to the size of the sliding platform 122, so that the fixture carrier plate 13 can move up and down relative to the spot welding fixture 11, and the two pneumatic cylinders 142 are respectively provided on the inner side of the two opposite side plates 123, so that the ends of the two drive rods 1421 of each pneumatic cylinder 142 can be connected to the opposite side edge of the fixture carrier plate 13.

[0056] Each gripper assembly 15 is installed in each mounting hole 131, and each gripper assembly 15 includes a mounting block 151, a gripper 152 and an elastic component 153. A groove 1511 is provided on one side of the mounting block 151 to house the gripper 152 and the elastic component 153. The gripper 152 can have an elastic extension and retraction effect through the restoring elastic force of the elastic component 153. It should be noted that the gripper 152 has a mounting part 1521 and a pressing part 1522. The mounting part 1521 is slidably installed in the groove 1511, and the pressing part 1522 extends from the front end of the mounting part 1521. The pressing part 1522 is U-shaped so as to press it on both sides of the area to be welded so that it fits tightly.

[0057] In addition, the slide 1511 has a limiting rib 1512 inside, and the gripper 152 has a limiting groove 15211 corresponding to the limiting rib 1512, so that the limiting rib 1512 is positioned in the limiting groove 15211 during installation.

[0058] The pneumatic supply module 16 includes an air supply source 161, a solenoid valve 162, and a foot switch 163. The air supply source 161 is connected to the solenoid valve 162, and then connected to the pneumatic cylinder 142 of each pneumatic lifting assembly 14 through the solenoid valve 162. The foot switch 163 is connected to the solenoid valve 162. Accordingly, the foot switch 163 is used to control the opening and closing of the solenoid valve 162 to supply air to the multiple pneumatic lifting assemblies 14, thereby driving the gripper plate 13 to rise and fall, so that the multiple gripper groups 15 can stably and evenly press the two welding objects 2 for spot welding. In addition, for the convenience of operation, a timer 164 is electrically connected to the solenoid valve 162 to set the opening and closing time of the solenoid valve 162. Specifically, the timer 164 starts timing after the foot switch 163 is pressed. This time is set to the welding time. When the timing time is up, the foot switch 163 will be lifted again.

[0059] Accordingly, when operating the laser spot welding processing device 1 of the present invention, the two welding objects 2 are placed on the spot welding fixture 11 and pushed forward to the front end by the sliding platform 122. Pressing down the foot pedal switch 163 can drive the solenoid valve 162, and the air supply source 161 supplies air to the two pneumatic cylinders 142, so that the clamping plate 13 together with multiple clamping groups 15 press down on the two welding objects 2 and start laser welding. After the welding is completed, the clamping plate 13 will rise again and the welded product can be taken out. In this way, the purpose of improving production efficiency and improving production quality can be achieved.

[0060] While the embodiments of the present invention are disclosed as described above, they are not intended to limit the present invention. Any person skilled in the art may make some changes to the shape, structure, features, methods and quantities described in the claims of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the scope of the claims appended to this specification.

Claims

1. A laser spot welding processing apparatus for pressing two materials to be welded together tightly, characterized in that, The laser spot welding processing device comprises: a spot welding jig, which is provided with a plurality of positioning portions corresponding to the two welding objects to position and carry the two welding objects thereon; a base for carrying the spot welding jig; a clamping jaw carrier plate, which is arranged on one side of the spot welding jig and is opposite to the spot welding jig, and is provided with a plurality of mounting holes corresponding to the positions to be welded of the two welding objects; a plurality of pneumatic lifting assemblies, one end of each of which is fixedly arranged on two sides of the base, and the other end of each of the plurality of pneumatic lifting assemblies is connected to the clamping jaw carrier plate to drive the clamping jaw carrier plate to move up and down relative to the spot welding jig; a plurality of clamping jaw groups, each of which is arranged in each of the mounting holes, and each of the clamping jaw groups comprises a mounting block, a clamping jaw and a resilient assembly, one side of the mounting block is provided with a sliding groove to arrange the clamping jaw and the resilient assembly in the sliding groove, the clamping jaw has an elastic telescopic effect through the restoring force of the resilient assembly, the sliding groove of the mounting block has at least one limiting rib, and the clamping jaw is provided with a limiting groove corresponding to the limiting rib to enable the limiting rib to be located in the limiting groove during installation; and a pneumatic supply module, which comprises a gas source, a solenoid valve and a pedal switch, the gas source is connected to the solenoid valve, and the solenoid valve is connected to each of the pneumatic lifting assemblies, and the pedal switch is connected to the solenoid valve; accordingly, the pedal switch is used to control the opening and closing of the solenoid valve to supply gas to the plurality of pneumatic lifting assemblies, thereby driving the clamping jaw carrier plate to move up and down, so that the plurality of clamping jaw groups can stably and evenly press the two welding objects to perform spot welding; wherein the clamping jaw has a mounting portion and a pressing portion, the mounting portion is slidingly arranged in the sliding groove, and the pressing portion is extended to the front end of the mounting portion, and the pressing portion is in a U-shaped form to press the two sides of the welding position to make them closely fit.

2. The laser spot welding apparatus according to claim 1, characterized by wherein a sliding platform is further provided, and a sliding rail is arranged on the base to limit the sliding platform to move on the sliding rail, and one side of the sliding platform is provided with a handle to pull the sliding platform to move towards the outside of the clamping jaw carrier plate or push the sliding platform to move towards the direction corresponding to the clamping jaw carrier plate.

3. The laser spot welding apparatus according to claim 2, wherein wherein the base is provided with a plurality of side plates corresponding to the plurality of pneumatic lifting assemblies on two sides to form a protection space, so that the spot welding jig, the clamping jaw carrier plate and the plurality of pneumatic lifting assemblies are enclosed in the protection space.

4. The laser spot welding apparatus according to claim 3, wherein wherein the pneumatic lifting assembly comprises four guide columns and two pneumatic cylinders, the four guide columns are arranged around the base, and four guide holes are formed on the clamping jaw carrier plate corresponding to the four guide columns, the four guide columns are arranged in the guide holes to form positioning and guiding, and the two pneumatic cylinders are arranged on two sides of the base, each of the pneumatic cylinders has two driving rods connected to the clamping jaw carrier plate.

5. The laser spot welding apparatus according to claim 4, wherein wherein the distance between the four guide columns corresponds to the size of the sliding platform, so that the clamping jaw carrier plate can move up and down relative to the spot welding jig.

6. The laser spot welding apparatus according to claim 5, wherein The two pneumatic cylinders are arranged at the inner side of the two opposite side plates, and the two driving rods of the pneumatic cylinders are connected to the opposite edges of the clamping jaw loading plate.

7. The laser spot welding apparatus of claim 1, wherein The electromagnetic valve is electrically connected with a timer for setting the opening and closing time of the electromagnetic valve.

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