Mobile phone elastic piece welding jig

Abstract

The utility model discloses a mobile phone elastic piece welding jig which comprises a jig base, a supporting column, a jacking air cylinder, an upper fixing plate, a jig bottom plate, a rack, a gear and a gear pressing foot. The supporting column and the jacking air cylinder are installed on the jig base, and the upper fixing plate is installed on the supporting column. A mobile phone middle shell limiting part used for positioning a mobile phone middle shell is arranged on the jig bottom plate, and an air cylinder piston rod of the jacking air cylinder extends upwards and is connected with the jig bottom plate so as to drive the jig bottom plate to ascend or descend. The upper fixing plate is located above the jig bottom plate, a middle cavity is formed in the upper fixing plate, and the middle cavity corresponds to the mobile phone middle shell limiting part up and down; the rack is vertically installed on the jig bottom plate, the gear is installed on the side portion of the middle cavity, the rack is meshed with the gear, one end of the gear pressing foot is connected with the side portion of the gear, and the other end of the gear pressing foot extends to the position above the mobile phone middle shell limiting portion and is used for pressing or loosening a mobile phone elastic piece on the mobile phone middle shell. According to the utility model, the mobile phone middle shell can be stably positioned and the mobile phone elastic sheet can be tightly pressed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser welding equipment, in particular to a welding jig for mobile phone shrapnel. Background Art

[0002] The laser welding process replaces the traditional mechanical knife with a laser beam. It has the advantages of high precision, fast welding, no restrictions on welding patterns, smooth incisions, and low processing costs. Laser welding requires the use of a laser welding machine. The mobile phone middle shell is one of the main structural components of a smartphone, and mobile phone shrapnel usually needs to be welded on the mobile phone middle shell. Due to the various advantages of the laser welding process mentioned above, the current welding process of the mobile phone middle shell and the mobile phone shrapnel gradually adopts the laser welding process for welding. During the welding process of the mobile phone shrapnel, a welding jig for placing the mobile phone middle shell and the mobile phone shrapnel is required. However, the current welding jig has the following main defects: it is difficult to press the mobile phone shrapnel onto the mobile phone middle shell, and the mobile phone shrapnel is easily displaced during the process of transferring the welding jig and welding the mobile phone shrapnel, resulting in inaccurate welding.

[0003] Refer to Chinese patent document CN215280389U, which discloses an automatic guided welding machine for mobile phone shrapnel, including a frame assembly, a mounting platform is provided in the frame assembly, a turntable assembly is provided in the middle of the mounting platform, a loading assembly and a welding assembly are provided on the side of the turntable assembly, the turntable assembly includes a turntable and a turntable drive, a certain number of positioning fixtures are evenly distributed on the outer periphery of the top surface of the turntable, the loading assembly includes a feeder and a four-axis robot, a shrapnel suction head module is provided at the end of the four-axis robot, the welding assembly includes a translation linear module, a lifting linear module at the movable end of the translation linear module and a laser welding module at the movable end of the lifting linear module, and a pressing module is provided on the mounting platform below the laser welding module. This welding machine can realize automatic loading and pressing of mobile phone shrapnel, but this welding machine also has the following technical defects: there is no pressing device on the positioning jig of this welding machine, and this welding machine relies on the pressing module below the laser welding module to press the material. When the mobile phone shrapnel is transferred to the positioning jig by the robot, the positioning jig and the mobile phone shrapnel on the positioning jig need to rotate step by step with the turntable assembly. Since the positioning jig will vibrate during the rotation process, it is easy to cause the mobile phone shrapnel on the positioning jig to be displaced, and the positioning jig will accelerate or decelerate multiple times during the rotation process, which can also easily cause the mobile phone shrapnel on the positioning jig to be displaced under the action of inertia, and ultimately lead to the problem of inaccurate laser welding. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a mobile phone shrapnel welding fixture capable of positioning a mobile phone middle shell and pressing a mobile phone shrapnel in accordance with the above-mentioned deficiencies in the prior art.

[0005] To solve the above technical problems, the technical solution of the utility model is: a mobile phone shrapnel welding jig, comprising a jig base, a support column, a lifting cylinder, an upper fixed plate, a jig bottom plate, a rack, a gear and a gear presser foot; the support column and the lifting cylinder are respectively installed on the jig base, and the upper fixed plate is installed on the support column; a mobile phone middle shell limiting portion for positioning the mobile phone middle shell is provided on the jig bottom plate, and the cylinder piston rod of the lifting cylinder extends upward and is connected to the jig bottom plate to drive the jig bottom plate to rise or fall; the upper fixed plate is located above the jig bottom plate, and the upper fixed plate is provided with a middle cavity, which corresponds to the mobile phone middle shell limiting portion up and down; the rack is vertically installed on the jig bottom plate, the gear is installed on the side of the middle cavity of the upper fixed plate, the rack is meshed with the gear, one end of the gear presser foot is connected to the side of the gear, and the other end of the gear presser foot extends above the mobile phone middle shell limiting portion, for tightening or loosening the mobile phone shrapnel on the mobile phone middle shell.

[0006] In the above technical solution, there are four support columns, which are vertically installed on the four corners of the jig base, and the upper ends of the four support columns are connected to the four corners of the upper fixed plate. There are two lifting cylinders, which are installed on the middle part of the jig base, and a floating joint is provided at the connection between the cylinder piston rod of the lifting cylinder and the jig base plate.

[0007] In the above technical solution, a plurality of mobile phone middle shell limiting blocks and a plurality of mobile phone middle shell positioning pins are provided on the mobile phone middle shell limiting portion of the fixture bottom plate.

[0008] In the above technical solution, several guide posts are vertically installed on the edge of the fixture base plate, and the upper fixed plate is provided with several guide holes corresponding to the guide posts, and the guide posts are movably inserted into the corresponding guide holes.

[0009] In the above technical solution, a notch is provided on the side of the central cavity of the upper fixed plate, and the rack moves through the notch; the spring clamping mechanism of the welding jig also includes a gear fixing block, a gear connecting shaft and a bearing, the gear fixing block is connected to the side wall of the notch, one end of the gear connecting shaft is connected to the gear fixing block, the bearing is installed on the gear connecting shaft, and the gear is installed on the bearing.

[0010] In the above technical solution, there are five of each of the rack, gear, gear presser foot, notch, gear fixing block, gear connecting shaft and bearing.

[0011] The beneficial effects of the utility model are as follows: since the mobile phone middle shell limiting portion for positioning the mobile phone middle shell is provided on the jig bottom plate, the mobile phone middle shell can be positioned by using the jig bottom plate; since the support column and the lifting cylinder are installed on the jig base, the upper fixed plate is installed on the support column, and the cylinder piston rod of the lifting cylinder extends upward and connects to the jig bottom plate to drive the jig bottom plate to rise or fall, the upper fixed plate is located above the jig bottom plate, and the upper fixed plate is provided with a middle cavity, the middle cavity corresponds to the mobile phone middle shell limiting portion up and down, the rack is vertically installed on the jig bottom plate, the gear is installed on the side of the middle cavity of the upper fixed plate, the rack is meshed with the gear, and one end of the gear presser foot is connected to the side of the gear, The other end of the gear presser foot extends to the top of the limiting part of the mobile phone middle shell, and is used to tighten or loosen the mobile phone shrapnel on the mobile phone middle shell. Therefore, when the mobile phone shrapnel is placed on the mobile phone middle shell, the cylinder piston rod of the lifting cylinder rises, driving the jig base plate to rise, and the jig base plate then drives the rack to move upward, and the rack drives the gear to rotate, and finally the gear drives the other end of the gear presser foot to swing downward and press the mobile phone shrapnel; it can be seen that the welding jig of the utility model can firmly press the mobile phone shrapnel, and the problem of displacement of the mobile phone shrapnel on the mobile phone middle shell can be avoided during the movement of the welding jig and the welding process of the mobile phone shrapnel, so that the mobile phone middle shell and the mobile phone shrapnel can be accurately laser welded together. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is one of the three-dimensional structural diagrams of the welding fixture.

[0013] Figure 2 This is the second three-dimensional structural diagram of the welding fixture.

[0014] Figure 3 A three-dimensional structural diagram of the welding fixture positioning the mobile phone middle shell and pressing the mobile phone shrapnel.

[0015] Figure 4 This is a diagram of the dispersed structure of the welding fixture.

[0016] Figure 5 This is a combined structural diagram of a rack, a gear, a gear presser foot, a gear fixing block, a gear connecting shaft and a bearing. DETAILED DESCRIPTION

[0017] The structural principle and working principle of the present invention are further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1-Figure 5As shown, a mobile phone shrapnel welding jig includes a jig base 211, a support column 212, a lifting cylinder 213, an upper fixed plate 214, a jig bottom plate 215, a rack 216, a gear 217 and a gear presser foot 218; the support column 212 and the lifting cylinder 213 are respectively installed on the jig base 211, and the upper fixed plate 214 is installed on the support column 212; a mobile phone middle shell limiting portion 2151 for positioning the mobile phone middle shell 100 is provided on the jig bottom plate 215, and the cylinder piston rod of the lifting cylinder 213 extends upward and connects to the jig bottom plate 215 to drive the jig bottom plate 215 to rise or fall. Descending; the upper fixing plate 214 is located above the jig bottom plate 215, and the upper fixing plate 214 is provided with a middle cavity 2141, and the middle cavity 2141 corresponds to the upper and lower limit portion 2151 of the mobile phone middle shell; the rack 216 is vertically installed on the jig bottom plate 215, and the gear 217 is installed on the side of the middle cavity 2141 of the upper fixing plate 214, the rack 216 is engaged with the gear 217, and one end of the gear presser foot 218 is connected to the side of the gear 217, and the other end of the gear presser foot 218 extends above the limit portion 2151 of the mobile phone middle shell, for tightening or loosening the mobile phone shrapnel 200 on the mobile phone middle shell. When the mobile phone shrapnel 200 is not compressed, the cylinder piston rod of the lifting cylinder 213 is in a retracted state, and the gear presser foot 218 is in an upwardly lifted state; when the mobile phone shrapnel 200 is placed on the mobile phone middle shell 100, the cylinder piston rod of the lifting cylinder 213 rises, driving the jig base plate 215 to rise, and the jig base plate 215 then drives the rack 216 to move upward, and the rack 216 then drives the gear 217 to rotate, and finally the gear 217 drives the other end of the gear presser foot 218 to swing downward and compress the mobile phone shrapnel 200. The welding jig 21 of the present invention can use the mobile phone middle shell limiting part 2151 of the jig bottom plate 21 to position the mobile phone middle shell 100, and then use the gear presser foot 218 to press the mobile phone shrapnel 200. The positioning stability of the mobile phone middle shell 100 and the mobile phone shrapnel 200 is high. When the welding jig is moving and the mobile phone shrapnel 200 is welding, the problem of displacement of the mobile phone shrapnel 200 on the mobile phone middle shell 100 can be avoided, so that the mobile phone middle shell 100 and the mobile phone shrapnel 200 can be accurately laser welded together.

[0019] like Figure 1-Figure 5 As shown, there are four support columns 212, which are vertically mounted on the four corners of the jig base 211. The upper ends of the four support columns 212 are connected to the four corners of the upper fixed plate 214. There are two lifting cylinders 213, which are mounted on the middle of the jig base 211. The connection between the cylinder piston rods of the lifting cylinders 213 and the jig base 215 is equipped with a floating joint 2131. This can improve the installation stability of the upper fixed plate 214 and enhance the lifting stability of the jig base 21.

[0020] like Figure 1-Figure 5 As shown, a plurality of mobile phone middle shell limiting blocks 2152 and a plurality of mobile phone middle shell positioning pins 2153 are provided on the mobile phone middle shell limiting portion 2151 of the fixture bottom plate 215, which can further improve the positioning stability of the mobile phone middle shell 100.

[0021] like Figure 1-Figure 5 As shown, several guide columns 209 are vertically installed on the edge of the jig base plate 215, and the upper fixed plate 214 is provided with several guide holes 2142 corresponding to the guide columns 209. The guide columns 209 are movably inserted into the corresponding guide holes 2142, which can improve the lifting stability of the jig base plate 215.

[0022] like Figure 1-Figure 5 As shown, the central cavity 2141 of the upper fixing plate 214 is provided with a notch 2143 on the side, through which the rack 216 moves. The spring clip pressing mechanism of the welding jig 21 also includes a gear fixing block 2171, a gear connecting shaft 2172, and a bearing 2173. The gear fixing block 2171 is connected to the side wall of the notch 2143. One end of the gear connecting shaft 2172 is connected to the gear fixing block 2171. The bearing 2173 is mounted on the gear connecting shaft 2172, and the gear 217 is mounted on the bearing 2173. There are five racks 216, five gears 217, five gear presser feet 218, five notches 2143, five gear fixing blocks 2171, five gear connecting shafts 2172, and five bearings 2173. The mobile phone middle case 100 in this embodiment requires welding five mobile phone spring clips 200, each of which is pressed by a separate gear presser foot 218.

[0023] The above description is only a preferred embodiment of the present invention. Any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical solution of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A mobile phone shrapnel welding jig, characterized by: The jig is a machine tool that is designed to move the mobile phone to a desired position and to move the mobile phone to a desired position, and the jig is a machine tool that is designed to move the mobile phone to a desired position.

2. The mobile phone shrapnel welding jig according to claim 1, characterized in that: There are four support columns, which are vertically installed on the four corners of the jig base, and the upper ends of the four support columns are connected to the four corners of the upper fixed plate. There are two lifting cylinders, which are installed on the middle part of the jig base. A floating joint is provided at the connection between the cylinder piston rod of the lifting cylinder and the jig base plate.

3. The mobile phone shrapnel welding jig according to claim 1, characterized in that: A plurality of mobile phone middle shell limiting blocks and a plurality of mobile phone middle shell positioning pins are provided on the mobile phone middle shell limiting portion of the fixture bottom plate.

4. The mobile phone shrapnel welding jig according to claim 1, characterized in that: A plurality of guide posts are vertically mounted on the edge of the fixture base plate, and the upper fixing plate is provided with a plurality of guide holes corresponding to the guide posts, and the guide posts are movably inserted into the corresponding guide holes.

5. The mobile phone shrapnel welding jig according to claim 1, characterized in that: A notch is provided on the side of the central cavity of the upper fixed plate, and the rack moves through the notch; the spring clamping mechanism of the welding jig also includes a gear fixing block, a gear connecting shaft and a bearing, the gear fixing block is connected to the side wall of the notch, one end of the gear connecting shaft is connected to the gear fixing block, the bearing is installed on the gear connecting shaft, and the gear is installed on the bearing.

6. The mobile phone shrapnel welding jig according to claim 1, characterized in that: There are five racks, five gears, five gear presser feet, five notches, five gear fixing blocks, five gear connecting shafts and five bearings respectively.

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