Welding device for front cover of mobile phone

Abstract

The utility model discloses a welding device for a front cover of a mobile phone, which comprises a conveying mechanism, a positioning clamp is conveyed on the conveying mechanism, the positioning clamp clamps the front cover of the mobile phone and a metal fastener which are subjected to pre-positioning registration, and the welding device comprises a first overturning station, a second overturning station, a third overturning station and a fourth overturning station which are sequentially arranged along the conveying direction of the conveying mechanism, the first overturning station is provided with a rotatable clamping device and a lifting device for driving the clamping device to lift, and the clamping device acts on the positioning clamp; the laser measuring station is provided with a plurality of point laser emitting devices and is used for detecting the position of the metal fastener on the positioning clamp; and the laser welding station is provided with at least one laser welding machine head and is used for welding the metal fastener on the front cover of the mobile phone. The problems that manual participation is needed and the automation level is low in the existing mobile phone front cover welding process are solved.

Description

Technical Field

[0001] The present application relates to the technical field of laser welding, and in particular to a welding device for a mobile phone front cover. Background Art

[0002] In the production of mobile phone front covers, there is a step of welding a metal fastener for connecting the middle frame on the front cover of the mobile phone. Since the metal fastener is small in size, easy to damage, and difficult to align with the front cover of the mobile phone, a special positioning fixture is required for pre-positioning. After the pre-positioning is completed, the positioning fixture needs to be manually flipped for positioning before continuing the welding step. In order to adapt the positioning fixture and realize automatic welding, the applicant proposes a welding device for the front cover of the mobile phone. Utility Model Content

[0003] The utility model discloses a welding device for a mobile phone front cover, which solves the problem that manual participation is required and the automation level is low in the existing welding of the mobile phone front cover.

[0004] A welding device for a mobile phone front cover comprises a conveying mechanism, on which a positioning fixture is transported, and the positioning fixture clamps the mobile phone front cover and the metal fastener that have completed pre-positioning and registration. The welding device comprises:

[0005] A first flipping station, wherein the first flipping station has a rotatable clamping device and a lifting device for driving the clamping device to rise and fall, and the clamping device acts on the positioning fixture;

[0006] A laser measuring station, which is equipped with several point laser emitting devices for detecting the position of metal fasteners on the positioning fixture;

[0007] A laser welding station is provided with at least one laser welding head for welding metal fasteners to the front cover of a mobile phone.

[0008] In the present application, the first flipping station can flip the positioning fixture located on the conveying mechanism, so as to weld the back of the positioning fixture; the laser measurement station is used to detect the position of the metal fasteners on the positioning fixture to improve the accuracy of welding; the laser welding station is used to weld the metal fasteners. When the number of laser welding stations is set to two or more, the welding efficiency can also be improved.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0010] Optionally, it also includes a mounting frame, which is located on one side of the conveying mechanism, and the point laser emitting device and the laser welding head are fixed on the mounting frame.

[0011] Optionally, several groups of rolling mechanisms are further included, and the rolling mechanisms include a roller frame and a ballast roller located on the roller frame. The roller frame is arranged above the conveying mechanism, and the ballast roller pushes the positioning fixture.

[0012] Optionally, a second flipping station is also included, which is located downstream of the laser welding station and is used to flip the positioning fixture.

[0013] Optionally, a fixture in place sensor is provided at the laser welding station, and the fixture in place sensor is used to detect that the positioning fixture has arrived at the laser welding station, and is used to control the start-up of the laser welding head.

[0014] Optionally, a movable limiting slider is provided on the laser welding station, and after the fixture in place sensor detects the positioning fixture, the movable limiting slider locks the positioning fixture.

[0015] The beneficial effects of this application are as follows:

[0016] 1. The first flipping station can flip the positioning fixture on the conveying mechanism, so as to weld the back of the positioning fixture;

[0017] 2. The laser measurement station is used to detect the position of metal fasteners on the positioning fixture to improve the accuracy of welding;

[0018] 3. The laser welding station is used to weld metal fasteners. When the number of laser welding stations is set to two or more, the welding efficiency can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the first flipping station in this application;

[0020] Figure 2 This is a schematic diagram of the structure of the laser measurement station and the laser welding station in this application;

[0021] Figure 3 for Figure 2 A partial enlarged view of the middle A part;

[0022] Figure 4 This is a schematic diagram of the structure of the second flipping station in this application;

[0023] Figure 5 This is a schematic diagram of the local structure of the laser welding station in this application.

[0024] The reference numerals in the figures are described as follows:

[0025] 1. Positioning fixture; 2. Conveying mechanism; 3. First flipping station; 31. Clamping device; 32. Lifting device; 4. Laser measuring station; 41. Point laser emitting device; 5. Laser welding station; 51. Laser welding machine head; 52. Fixture in place sensor; 53. Movable limit slider; 54. Negative pressure device; 6. Mounting frame; 7. Rolling mechanism; 71. Roller frame; 72. Ballast roller; 8. Second flipping station. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be a central component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be a central component at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] refer to Figures 1 to 5 In one embodiment of the present application, a welding device for a mobile phone front cover is disclosed, the welding device includes a conveying mechanism 2, a positioning fixture 1 is conveyed on the conveying mechanism 2, the positioning fixture 1 clamps the mobile phone front cover and the metal fastener that have completed pre-positioning and registration, and the welding device includes: a first flipping station 3 arranged in sequence along the conveying direction of the conveying mechanism 1, the first flipping station 3 has a rotatable clamping device 31 and a lifting device 32 that drives the clamping device to rise and fall, the clamping device 32 acts on the positioning fixture 1; a laser measuring station 4, the laser measuring station 4 has a plurality of point laser emitting devices 41, which are used to detect the position of the metal fastener on the positioning fixture; a laser welding station 5, the laser welding station 5 is provided with at least one laser welding head 51, which is used to weld the metal fastener to the mobile phone front cover.

[0030] The positioning fixture 1 includes an upper cover 11 and a lower cover 12. A detachable connection structure is used between the lower cover 12 and the upper cover 11, and the two cooperate to form a clamping structure. When the lower cover 12 is connected to the upper cover 11, the CG and the metal fastener can be clamped to form a clamping state, so that the two fit together to avoid the occurrence of cold welding during welding. An avoidance channel 13 for avoiding laser is provided on the lower cover 12, so that the laser can pass through the avoidance channel 13 to act on the metal fastener for welding.

[0031] Furthermore, in order to stably fix the point laser emitting device 41 and the laser welding head 41 above the conveying mechanism, the welding device also includes a mounting frame 6, which is located on one side of the conveying mechanism 1, and the point laser emitting device 41 and the laser welding head 51 are fixed on the mounting frame.

[0032] In order to avoid the situation where the positioning fixture 1 is offset due to the vibration generated during transportation after passing through the laser measurement station 4 and being transported to the laser welding station 5, resulting in mismatched welding points, in one embodiment of the present application, the welding device also includes a plurality of rolling mechanisms 7, the rolling mechanism 7 includes a roller frame 71 and a pressure load roller 72 located on the roller frame, the roller frame 71 is arranged above the conveying mechanism 1, and the pressure load roller 72 rolls during the transmission of the positioning fixture 1 to play a fixing role.

[0033] Furthermore, the welding device also includes a second flipping station 8, which is located downstream of the laser welding station 4 and is used to flip the flipped positioning fixture 1 again for resetting.

[0034] Furthermore, a fixture in-place sensor 52 is provided at the laser welding station 5, and the fixture in-place sensor 42 is used to detect that the positioning fixture 1 has arrived at the laser welding station, and is used to control the start of the laser welding machine head to achieve automatic control.

[0035] Furthermore, a movable limiting slider 53 is provided on the laser welding station 5 . When the fixture in place sensor 52 detects that the positioning fixture 1 is in place, the movable limiting slider 53 locks the positioning fixture 1 , thereby limiting the positioning fixture 1 .

[0036] Furthermore, a negative pressure device 54 is provided on the laser welding station 5 to absorb the smoke generated by the laser welding.

[0037] In this embodiment, the engineering process of the welding device is as follows:

[0038] 1. The front cover of the mobile phone and the metal fastener are pre-positioned and aligned on the positioning fixture 1, and then transferred to the first flipping station 3 by the conveying mechanism 2. After the positioning fixture 1 is clamped by the clamping device 31, it is lifted up by the lifting device 32 to separate the positioning fixture 1 from the conveying mechanism 2. The positioning fixture 1 is then driven by the clamping device 31 to flip 180 degrees, so that the avoidance channel 13 on the positioning fixture 1 faces upward. After the flipping is completed, the clamping device 31 descends and the positioning fixture 1 is placed back on the conveying mechanism 2;

[0039] 2. After the positioning fixture 1 is turned over, it is transmitted to the laser measurement station 4 by the conveying mechanism 2 and the rolling mechanism 7, and the laser emitting device 41 is turned on to detect the metal fasteners on the positioning fixture 1;

[0040] 3. The positioning fixture 1 that has been tested is transferred to the laser welding station 5 by the conveying mechanism 2 and the rolling mechanism 7. After the fixture in place sensor 42 is triggered, the movable limit slider 53 extends to lock the positioning fixture 1, and the laser welding head 51 performs welding.

[0041] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0042] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A welding device for a mobile phone front cover, comprising a conveying mechanism, wherein a positioning fixture is provided on the conveying mechanism, wherein the positioning fixture clamps the mobile phone front cover and the metal fastener that have been pre-positioned and registered. The welding device is characterized in that: include, Arranged in sequence along the transmission direction of the conveying mechanism: A first flipping station, wherein the first flipping station has a rotatable clamping device and a lifting device for driving the clamping device to rise and fall, and the clamping device acts on the positioning fixture; A laser measuring station, which is equipped with several point laser emitting devices for detecting the position of metal fasteners on the positioning fixture; A laser welding station is provided with at least one laser welding head for welding metal fasteners to the front cover of a mobile phone.

2. The welding device for the front cover of a mobile phone according to claim 1, characterized in that: It also includes a mounting frame, which is located on one side of the conveying mechanism, and the point laser emitting device and the laser welding head are fixed on the mounting frame.

3. The welding device for the front cover of a mobile phone according to claim 2, characterized in that: It also includes several groups of rolling mechanisms, which include a roller frame and a ballast roller on the roller frame. The roller frame is arranged above the conveying mechanism, and the ballast roller pushes the positioning fixture.

4. The welding device for the front cover of a mobile phone according to claim 3, characterized in that: It also includes a second flipping station, which is located downstream of the laser welding station and is used to flip the positioning fixture.

5. The welding device for the front cover of a mobile phone according to claim 4, characterized in that: A fixture in place sensor is provided at the laser welding station, and the fixture in place sensor is used to detect that the positioning fixture has arrived at the laser welding station and is used to control the start of the laser welding head.

6. The welding device for the front cover of a mobile phone according to claim 5, characterized in that: The laser welding station is provided with a movable limiting slider, and after the fixture in place sensor detects the positioning fixture, the movable limiting slider locks the positioning fixture.

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