Automatic accurate marking equipment for SiC power module frame

Abstract

The utility model relates to an automatic accurate marking device for SiC power module frames, which comprises a plurality of moving carriers, a pre-marking station, a marking processing station, a detection station and a laser marking assembly, a plurality of moving carrier bearing jigs pass through the pre-marking station, the marking processing station and the detection station in sequence, the conveying end of each station is provided with an intercepting assembly, and the laser marking assembly is provided with a laser marking module. The laser marking assembly is provided with a pre-marking station, the marking processing station is provided with a sensing assembly, the sensing assembly is used for sensing approaching and leaving of the movable carriers, the distance between the laser marking assembly and the marking processing station is kept unchanged, and the multiple movable carriers carry the jig to sequentially pass through the pre-marking station, the marking processing station and the detection station. As the jig is carried by the movable carrier, compared with the existing situation that the jig is manually prevented, as the process of assembling and disassembling the jig does not exist, the laser marking assembly does not need to be moved up and down, the marking efficiency is improved, the marking accuracy is improved, and the situation that the laser marking assembly is possibly damaged is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of semiconductor automatic marking equipment, and particularly relates to a SiC power module frame automatic precision marking equipment. BACKGROUND

[0002] At present, the marking process of the existing SiC module semi-automatic marking equipment is as follows: 1, the jig is fixed to the laser head; 2, the servo motor controls the laser head to move up and down; 3, the worker operates the laser head to move up and then carries out feeding and discharging; and 4, the laser head moves to the marking working position to mark.

[0003] The existing equipment has the following defects: 1, the manual operation steps are too cumbersome and prone to errors; 2, the laser lens needs to be moved up and down once for each product, which causes zooming risk and affects the marking effect; 3, the worker feeds and discharges the product up and down in front of the laser head, which has the risk of knocking the laser head; and 4, the marking efficiency is low and the degree of automation is not high. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides a SiC power module frame automatic precision marking equipment, which does not need to move up and down and has automatic marking process.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a SiC power module frame automatic precision marking equipment, which comprises a plurality of moving carriers, a pre-marking station, a marking processing station, a detection station and a laser marking assembly.

[0006] Further, the automatic precision marking equipment further comprises two spaced guide rails, the upper surfaces of the guide rails are provided with grooves, the moving carriers are provided with downwardly extending moving seats on both sides, and the moving seats are slidingly connected in the grooves.

[0007] Further, the intercepting assembly comprises an ejection cylinder, the ejection cylinder is arranged below the output end of the pre-marking station, the marking processing station and the detection station, the output end of the ejection cylinder is provided with a blocking body, and one side of the blocking body facing the moving carrier is provided with a pressing sensing assembly.

[0008] Further, the mobile carrier is provided with a convex plate on one side of the moving direction, the convex plate is provided with a groove, the groove is matched with the blocking body, the projection of the vertical interface of the pressing sensing assembly is coincided with the projection of the vertical interface of the groove.

[0009] Further, the mobile carrier is provided with a convex plate on one side of the moving direction, the convex plate is provided with a groove, the groove is matched with the blocking body, the projection of the vertical interface of the pressing sensing assembly is coincided with the projection of the vertical interface of the groove.

[0010] Further, the mobile carrier is provided with a convex plate on one side of the moving direction, the convex plate is provided with a groove, the groove is matched with the blocking body, the projection of the vertical interface of the pressing sensing assembly is coincided with the projection of the vertical interface of the groove.

[0011] Further, the mobile carrier is provided with a convex plate on one side of the moving direction, the convex plate is provided with a groove, the groove is matched with the blocking body, the projection of the vertical interface of the pressing sensing assembly is coincided with the projection of the vertical interface of the groove.

[0012] Further, the first sensing assembly comprises four matrix arranged photoelectric switches.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model discloses a plurality of mobile carriers bear the jig and pass the pre -marking station, marking processing station and detection station in proper order, since the jig is carried by the mobile carrier, relative to the existing manual prevention of the situation of the jig, since there is no unloading process of the jig, so need not set up up and down mobile laser marking assembly, has promoted the marking efficiency, has promoted the marking precision and avoided the possible damage of laser marking assembly's situation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three -dimensional structure schematic diagram of the utility model of a kind of SiC power module frame automation precision marking equipment;

[0016] Figure 2 It is the front view structure schematic diagram of the utility model;

[0017] Figure 3 It is the front view structure schematic diagram of marking processing station in the utility model;

[0018] Figure 4 It is the three -dimensional structure schematic diagram of mobile carrier in the utility model;

[0019] Figure 5 It is the three -dimensional structure schematic diagram of fixed plate and eject cylinder in the utility model.

[0020] Marked: 1, guide rail; 2, moving carrier; 21, blocking bar; 22, moving seat; 23, convex plate; 231, groove; 24, photoelectric switch; 25, guide bar; 3, pre-marking station; 4, marking processing station; 5, detection station; 6, laser marking assembly; 7, fixed plate; 71, proximity switch; 72, ejecting cylinder; 721, pressing induction assembly; 722, blocking body. DETAILED DESCRIPTION

[0021] In order to make the above features and advantages of the utility model more obvious and easy to understand, the following specific examples are described in detail below, and the drawings are as follows.

[0022] As shown in the drawings, the arrow direction is the moving direction, and the embodiment provides a SiC power module frame automatic precise marking equipment, which comprises a conveying assembly, a plurality of moving carriers 2, a pre-marking station 3, a marking processing station 4, a detection station 5, a laser marking assembly 6 and an electric control system. Figures 1-5 Figure 1 The conveying assembly comprises two guide rails 1, the two guide rails 1 are arranged at intervals, the upper surface of the guide rail 1 is provided with a groove 231, the two sides of the moving carrier 2 are provided with downwardly extending moving seats 22, the moving seat 22 is clamped in the groove 231 and is connected in sliding mode, specifically, the moving seat 22 is moved by being provided with moving wheels on the lower surface, a conveying belt is arranged in the groove 231, the moving seat 22 is moved by the friction between the moving seat 22 and the conveying belt, or a plurality of moving carriers 2 are used to move together (such as screw rod driving and servo motor driving). Figure 2 The two sides of the upper surface of the moving carrier 2 are provided with blocking bars 21, and the two blocking bars 21 are used for limiting the jig. The plurality of moving carriers 2 carrying the jig pass through the pre-marking station 3, the marking processing station 4 and the detection station 5 in turn, and the conveying end of the pre-marking station 3, the marking processing station 4 and the detection station 5 is provided with an intercepting assembly. Specifically, the intercepting assembly comprises an ejecting cylinder 72, the ejecting cylinder 72 is arranged below the output end of the pre-marking station 3, the marking processing station 4 and the detection station 5, the output end of the ejecting cylinder 72 is provided with a blocking body 722, the blocking body 722 is a column, one side of the blocking body 722 facing the moving carrier 2 is provided with a pressing induction assembly 721, the pressing induction assembly 721 adopts a pressing inductor, one side of the moving carrier 2 facing the moving direction is provided with a convex plate 23, specifically, the moving carrier 2 is provided with an extension plate below, one side of the extension plate facing outward is provided with the convex plate 23, the convex plate 23 is provided with a groove 231, the groove 231 is matched with the blocking body 722, and the projection of the vertical interface of the pressing induction assembly 721 coincides with the projection of the vertical interface of the groove 231.

[0023]

[0024]

[0025] ​​​Specifically, the mobile carrier 2 is provided with four matrix mounting holes, and a first sensing assembly is arranged in the mounting holes, and the first sensing assembly is used to sense whether the jig is above the mobile carrier 2. Specifically, the first sensing assembly includes four photoelectric switches 24 arranged in a matrix.

[0026] Preferably, the first sensing assembly can adopt an infrared sensor, a proximity sensor or a press sensor.

[0027] A proximity switch 71 is arranged below the pre-marking station 3, the marking processing station 4 and the detection station 5, and a guide strip 25 is arranged below the mobile carrier 2. When the mobile carrier 2 passes through the proximity switch 71, the mobile carrier 2 will be sensed by the proximity switch 71. Specifically, a fixed plate 7 is arranged below the pre-marking station 3, the marking processing station 4 and the detection station 5, and the proximity switch 71 is fixedly arranged above the fixed plate 7. The proximity switch 71 is a press proximity switch 71, and an eject cylinder 72 is arranged on one side of the fixed plate 7. When the proximity switch 71 is arranged, the mobile carrier 2 is double-ensured to be moved to the position, and the processing error caused by the failure of the press sensing assembly 721 of the eject cylinder 72 is prevented.

[0028] The laser marking assembly 6 is located above the marking processing station 4, and the distance between the laser marking assembly 6 and the marking processing station 4 remains unchanged. The laser marking assembly 6 adopts a laser marking device commonly used in the prior art. An electric control system is used to receive all signals of the automatic precise marking device and control the movement of each component of the automatic precise marking device.

[0029] Working principle: a plurality of mobile carriers 2 are sequentially and spaced apart on the guide rail 1, and the plurality of mobile carriers 2 sequentially move towards the marking station. When the mobile carrier 2 reaches the pre-marking station 3, the ejecting cylinder 72 is in the ejecting state, the groove 231 on the protruding plate 23 on the mobile carrier 2 abuts against the pressing sensing assembly 721 on the ejecting cylinder 72, each mobile carrier 2 stops moving, the photoelectric switch 24 on the mobile carrier 2 located in the pre-processing station sends a signal to the electric control system, indicating that the jig on the mobile carrier 2, the electric control system sends a release signal to the ejecting cylinder 72 on the pre-processing station, the ejecting cylinder 72 retracts, and the ejecting cylinder 72 ejects after 2 seconds after the proximity switch 71 on the station fails to detect the mobile carrier 2, ensuring that the mobile carrier 2 has moved out of the output end of the ejecting cylinder 72. When the mobile carrier 2 moves to the marking processing station 4, the proximity switch 71 senses the position and the blocking of the ejecting cylinder 72, the mobile carrier 2 accurately stops at the processing station, the laser marking assembly 6 marks the jig, after marking, the electric control system receives the marking completion instruction, controls each ejecting cylinder 72 to retract, and each mobile carrier 2 moves downward in sequence. When marking in the marking processing station 4 (except for the first time), if the proximity switch 71 of the pre-marking station 3 and the pressing sensing assembly 721 on the ejecting cylinder 72 corresponding thereto are not triggered, it indicates that there is an abnormal mobile carrier 2, which needs to be detected manually, and when the photoelectric switch 24 on the mobile carrier 2 fails to detect the jig, the mobile carrier 2 passes under the laser marking assembly 6, and is not marked. A camera can be arranged above the detection station 5 to detect whether the pattern and text of the marking are clear and accurate, and whether there is an abnormal marking condition. If there is, the worker is immediately warned to check.

[0030] The basic principles and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An automated and precise marking device for SiC power module frames, characterized in that: The system includes multiple mobile carriers, a pre-marking station, a marking processing station, an inspection station, and a laser marking component. The multiple mobile carriers carry the jigs and sequentially pass through the pre-marking station, the marking processing station, and the inspection station. The conveying ends of the pre-marking station, the marking processing station, and the inspection station are equipped with interception components. The marking processing station is equipped with a sensing component, which is used to sense the approach and departure of the mobile carriers. The laser marking component is located above the marking processing station, and the distance between the laser marking component and the marking processing station remains constant.

2. The automated precision marking equipment for SiC power module frames according to claim 1, characterized in that: The automated precision marking equipment also includes two spaced guide rails with grooves on their upper surfaces. The moving carrier has downward-extending movable seats on both sides, which are slidably engaged within the grooves.

3. The automated precision marking equipment for SiC power module frames according to claim 1, characterized in that: The interception component includes an ejector cylinder, which is located below the output ends of the pre-marking station, the marking processing station, and the detection station. The output end of the ejector cylinder is provided with a blocking body, and a pressure sensing component is provided on the side of the blocking body facing the moving vehicle.

4. The automated precision marking equipment for SiC power module frames according to claim 3, characterized in that: The mobile vehicle has a protruding plate on the side facing the direction of movement, and a groove is provided on the protruding plate. The groove is adapted to the blocking body, and the projection of the vertical interface of the pressing sensing component coincides with the projection of the vertical interface of the groove.

5. The automated precision marking equipment for SiC power module frames according to claim 1, characterized in that: The mobile carrier is provided with multiple mounting holes, and a first sensing component is provided in each mounting hole. The first sensing component is used to sense whether the fixture is above the mobile carrier.

6. The automated precision marking equipment for SiC power module frames according to claim 1, characterized in that: Proximity switches are installed below the pre-marking station, marking processing station, and inspection station. Guide bars are installed below the mobile carrier. The mobile carrier will be sensed by the proximity switches when it passes by them.

7. The automated precision marking equipment for SiC power module frames according to claim 1, characterized in that: The mobile vehicle has blocking strips on both sides of its upper surface.

8. The automated precision marking equipment for SiC power module frames according to claim 5, characterized in that: The first sensing component includes four photoelectric switches arranged in a matrix.

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