Silicon controlled rectifier scribing equipment

Abstract

The invention provides silicon controlled rectifier scribing equipment which comprises a base, a backup plate, a moving unit and a cutting unit, and relates to the technical field of silicon controlled rectifiers, silicon controlled rectifiers of different models can be stably clamped through a positioning unit, it is ensured that the positions of the silicon controlled rectifiers are fixed in the scribing process, cutting deviation caused by material movement is avoided, and the quality of the silicon controlled rectifiers is improved. Therefore, the scribing precision and the product quality are greatly improved. The silicon controlled rectifier moving mechanism driven by the air cylinder can automatically push the silicon controlled rectifier to be cut to the backup plate, rapid and accurate positioning is achieved, time and errors of manual adjustment are reduced, and production efficiency is effectively improved. Due to the transverse adjusting function of the cutting unit, the laser cutting machine can be adjusted in a self-adaptive mode according to the cutting requirements of different lengths, tedious manual replacement or equipment adjustment is not needed, and the scribing requirements of silicon controlled rectifiers of various specifications are met. The moving unit drives the laser cutting machine to move, automation of the cutting process is achieved, and the cutting precision and efficiency are further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thyristors, and in particular to a thyristor dicing device. Background Art

[0002] In the field of power electronics, thyristors (SCRs), as a key power control component, have a wide range of applications, encompassing power regulation, motor drives, and more. Scribing is a crucial step in the thyristor manufacturing process, separating large blocks of silicon material into individual thyristor units. The accuracy of this process directly determines the performance and yield of the thyristors. Currently, thyristor scribing relies primarily on laser cutting technology, which uses a high-energy laser beam to locally heat and melt the silicon material, and then uses an assist gas to remove the molten portion to achieve cutting. However, existing laser cutting equipment often requires manual operation during the scribing process, especially when processing thyristors of varying lengths, requiring manual parameter adjustment and cutting path setting. This manual adjustment method has significant drawbacks. Due to the errors and limitations of human operators, it is difficult to ensure cutting accuracy and consistency. Especially when frequently changing cutting lengths, the adjustment process is cumbersome and prone to errors, resulting in reduced cutting accuracy, poor edge quality, and even material waste and reduced production efficiency. Summary of the Invention

[0003] The present invention provides a thyristor scribing device, comprising a base, a backing plate, a moving unit and a cutting unit, wherein the backing plate is fixedly arranged on the top of the base, the moving unit is fixedly arranged on one side of the backing plate, and the cutting unit is connected to the moving unit, and the moving unit comprises a support box, a first screw, a first motor, a first limiting rod and a first moving block, the support box is fixedly arranged on one side of the backing plate, and an opening is provided at the bottom of the support box, the two ends of the first screw are respectively rotatably connected to the left and right sides of the support box, the first motor is fixedly arranged on the left side outside the support box, and the driving end of the first motor is fixedly connected to one end of the first screw, the first limiting rod is fixedly arranged between the left and right sides in the support box, the first moving block is movably connected to the first screw and the first limiting rod respectively, and the first moving block movably passes through the bottom opening of the support box, and the cutting unit is arranged at the bottom of the first moving block.

[0004] Preferably, the cutting unit includes a connecting box, a second screw, a second motor, a second limiting rod, a second moving block and a laser cutting knife. The connecting box is fixedly arranged on one side of the support plate, and an opening is provided at the bottom of the connecting box. The two ends of the second screw are rotatably connected to the left and right sides of the connecting box respectively. The second motor is fixedly arranged on the right side outside the connecting box, and the driving end of the second motor is fixedly connected to one end of the second screw. The second limiting rod is fixedly arranged between the left and right sides in the connecting box. The second moving block is movably connected to the second screw and the second limiting rod respectively, and the second moving block movably passes through the opening at the bottom of the connecting box. The laser cutting knife is fixedly arranged at the bottom of the second moving block.

[0005] Preferably, a positioning unit for positioning the silicon wafer is provided on the base.

[0006] Preferably, the positioning unit includes a support base, a cylinder, a moving box, a bidirectional screw, a third motor, a third limit rod and two positioning plates, the support base is fixedly arranged on the right side of the base, the cylinder is fixedly arranged on the top of the support base, the moving box is fixedly connected to the driving end of the cylinder, one side of the moving box is provided with an opening, the two ends of the bidirectional screw are respectively rotatably connected to the left and right sides of the moving box, the third motor is fixedly arranged on the left side outside the moving box, and the third motor is fixedly connected to one end of the bidirectional screw, the third limit rod is fixedly arranged between the left and right sides in the connection box, the two positioning plates are respectively movably connected to the left and right sides of the bidirectional screw and the third limit rod, and the second moving block movably passes through the opening of the moving box.

[0007] The present invention provides an improved thyristor scribing machine that offers the following advantages over existing technologies: A positioning unit stably clamps thyristors of different sizes, ensuring their fixed position during the scribing process and avoiding cutting deviations caused by material movement, thereby significantly improving scribing accuracy and product quality. A pneumatic cylinder-driven thyristor movement mechanism automatically pushes the thyristor to be cut against a backing plate, enabling fast and accurate positioning, reducing the time and errors associated with manual adjustments and effectively improving production efficiency. The lateral adjustment function of the cutting unit enables the laser cutting machine to adapt to varying cutting lengths without requiring tedious manual equipment replacement or adjustments, enhancing the machine's flexibility and versatility and meeting the scribing needs of thyristors of various sizes. The movement unit drives the movement of the laser cutting machine, automating the cutting process, further improving cutting accuracy and efficiency and reducing the uncertainty associated with manual operation. After cutting is completed, the pneumatic cylinder continues to push the remaining thyristors against the backing plate, enabling continuous cutting without requiring machine downtime for manual re-clamping and positioning. This significantly improves production efficiency, reduces labor costs, and ensures consistent and stable cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0009] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0010] Figure 2 This is a schematic diagram of the main structure of the mobile unit of the present invention;

[0011] Figure 3 This is a schematic diagram of the main structure of the cutting unit of the present invention;

[0012] Figure 4 This is a schematic diagram of the main structure of the positioning unit of the present invention.

[0013] Description of reference numerals:

[0014] 1. Base; 2. Back plate; 3. Moving unit; 31. Support box; 32. First screw; 33. First motor; 34. First limiting rod; 35. First moving block; 4. Cutting unit; 41. Connecting box; 42. Second screw; 43. Second motor; 44. Second limiting rod; 45. Second moving block; 46. Laser cutting knife; 5. Positioning unit; 51. Support seat; 52. Cylinder; 53. Moving box; 54. Bidirectional screw; 55. Third motor; 56. Third limiting rod; 57. Positioning plate. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0017] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0018] See also Figure 1-4 The present invention provides a technical solution: a thyristor dicing device, including a base 1, a backing plate 2, a moving unit 3 and a cutting unit 4, the backing plate 2 is fixedly arranged on the top of the base 1, the moving unit 3 is fixedly arranged on one side of the backing plate 2, the cutting unit 4 is connected to the moving unit 3, the cutting unit 4 can cut the thyristor, and the moving unit 3 can drive the cutting unit 4 to move so as to automatically cut the thyristor. The moving unit 3 includes a supporting box 31, a first screw 32, a first motor 33, a first limiting rod 34 and a first moving block 35. The supporting box 31 is fixedly arranged on one side of the backing plate 2, and an opening is opened at the bottom of the supporting box 31. The two ends of the first screw 32 are respectively connected to the left and right sides of the supporting box 31. Rotational connection, the first motor 33 is fixedly arranged on the left side outside the support box 31, and the driving end of the first motor 33 is fixedly connected to one end of the first screw 32. The first motor 33 is used to drive the first screw 32. The first limit rod 34 is fixedly arranged between the left and right sides of the support box 31. The first limit rod 34 is located below the first screw 32. The first moving block 35 is movably connected to the first screw 32 and the first limit rod 34 respectively, and the first moving block 35 movably passes through the bottom opening of the support box 31. The first moving block 35 is threadedly connected to the first screw 32, and it is slidably connected to the first limit rod 34. The cutting unit 4 is arranged at the bottom of the first moving block 35, and the moving unit 3 can drive the cutting unit 4 to move.

[0019] Specifically, the cutting unit 4 includes a connecting box 41, a second screw 42, a second motor 43, a second limiting rod 44, a second moving block 45 and a laser cutting knife 46. The connecting box 41 is fixedly arranged on one side of the support plate 2, and an opening is opened at the bottom of the connecting box 41. The two ends of the second screw 42 are respectively rotatably connected to the left and right sides of the connecting box 41. The second motor 43 is fixedly arranged on the right side outside the connecting box 41, and the driving end of the second motor 43 is fixedly connected to one end of the second screw 42. The second motor 43 is used to drive the second screw 42. The second limiting rod 44 is fixedly arranged between the left and right sides in the connecting box 41. The second limiting rod 44 is located at the second screw 42. The second moving block 45 is movably connected to the second screw 42 and the second limiting rod 44 respectively, and the second moving block 45 movably passes through the bottom opening of the connecting box 41. The second moving block 45 is threadedly connected to the second screw 42, and it is slidably connected to the second limiting rod. The laser cutting knife 46 is fixedly arranged at the bottom of the second moving block 45.

[0020] Specifically, a positioning unit 5 for positioning the silicon wafer is provided on the base 1. The positioning unit 5 is used to position the thyristor and drive the thyristor to move.

[0021] Specifically, the positioning unit 5 includes a support base 51, a cylinder 52, a moving box 53, a bidirectional screw 54, a third motor 55, a third limit rod 56 and two positioning plates 57. The support base 51 is fixedly arranged on the right side of the base 1, and the cylinder 52 is fixedly arranged on the top of the support base 51. The moving box 53 is fixedly connected to the driving end of the cylinder 52. The cylinder 52 can drive the moving box 53 to move. An opening is opened on one side of the moving box 53. The two ends of the bidirectional screw 54 are rotatably connected to the left and right sides of the moving box 53 respectively. The third motor 55 is fixedly arranged on the moving box 53 is on the left side outside, and the third motor 55 is fixedly connected to one end of the bidirectional screw 54, the third motor 55 can drive the bidirectional screw 54 to rotate, and the third limit rod 56 is fixedly set between the left and right sides in the connecting box 41, and the two positioning plates 57 are movably connected to the left and right sides of the bidirectional screw 54 and the third limit rod 56 respectively, and the second moving block 45 is movably passed through the opening of the moving box 53, and the two positioning plates 57 are respectively threadedly connected to the left and right sides of the bidirectional screw 54, and the two positioning plates 57 are respectively slidably connected to the left and right sides of the third limit rod 56.

[0022] Working principle: When cutting the thyristor, place the thyristor between the two positioning plates 57 of the positioning unit 5, and then turn on the third motor 55. The third motor 55 can drive the bidirectional screw 54 to rotate. Due to the limiting effect of the third limit rod 56, the two positioning plates 57 can only move linearly towards each other, thereby clamping and fixing the thyristor. Then turn on the cylinder 52. The driving end of the cylinder 52 can drive the moving box 53 and the thyristor to move toward the back plate 2, so that the thyristor rests on the back plate 2. Then adjust the length of the laser cutting machine according to the length of cutting required. When adjusting, turn on the second motor 43. The second motor 43 The driving end can drive the second screw 42 to rotate. Due to the limiting effect of the second limit rod 44, the second moving block 45 can drive the laser cutting machine to move horizontally, thereby adjusting the cutting length. After the adjustment is completed, the moving unit 3 is turned on, and the first motor 33 in the moving unit 3 can drive the first screw 32 to rotate. Due to the limiting effect of the first limit rod 34, the first moving block 35 can drive the cutting unit 4 to move longitudinally, thereby automatically cutting the thyristor. After the cutting is completed, the cylinder 52 continues to push the remaining thyristors to automatically rest against the support plate 2, realizing continuous cutting without the need to stop the machine for manual re-clamping and positioning.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thyristor scribing device, characterized in that: The invention comprises a base (1), a backing plate (2), a moving unit (3) and a cutting unit (4), wherein the backing plate (2) is fixedly arranged on the top of the base (1), the moving unit (3) is fixedly arranged on one side of the backing plate (2), the cutting unit (4) is connected to the moving unit (3), and the moving unit (3) comprises a supporting box (31), a first screw (32), a first motor (33), a first limiting rod (34) and a first moving block (35), the supporting box (31) is fixedly arranged on one side of the backing plate (2), and an opening is provided at the bottom of the supporting box (31), the first screw (32) is fixedly arranged on the one side of the backing plate (2), and the first motor (33) is fixedly arranged on the one side of the backing plate (2), and the first limiting rod (34) is fixedly arranged on the bottom of the supporting box (31). 2) are rotatably connected to the left and right sides of the support box (31), the first motor (33) is fixedly arranged on the left side outside the support box (31), and the driving end of the first motor (33) is fixedly connected to one end of the first screw (32), the first limiting rod (34) is fixedly arranged between the left and right sides inside the support box (31), the first moving block (35) is movably connected to the first screw (32) and the first limiting rod (34), and the first moving block (35) is movably connected to the bottom opening of the support box (31), and the cutting unit (4) is arranged at the bottom of the first moving block (35).

2. The thyristor scribing device according to claim 1, characterized in that: The cutting unit (4) comprises a connecting box (41), a second screw (42), a second motor (43), a second limiting rod (44), a second moving block (45) and a laser cutting knife (46). The connecting box (41) is fixedly arranged on one side of the support plate (2), and an opening is provided at the bottom of the connecting box (41). The two ends of the second screw (42) are rotatably connected to the left and right sides of the connecting box (41). The second motor (43) is fixedly arranged on the right side outside the connecting box (41), and the driving end of the second motor (43) is fixedly connected to one end of the second screw (42). The second limiting rod (44) is fixedly arranged between the left and right sides in the connecting box (41). The second moving block (45) is movably connected to the second screw (42) and the second limiting rod (44) respectively, and the second moving block (45) movably passes through the bottom opening of the connecting box (41). The laser cutting knife (46) is fixedly arranged at the bottom of the second moving block (45).

3. The thyristor scribing device according to claim 2, characterized in that: The base (1) is provided with a positioning unit (5) for positioning the silicon wafer.

4. The thyristor scribing device according to claim 3, characterized in that: The positioning unit (5) comprises a support base (51), a cylinder (52), a moving box (53), a bidirectional screw (54), a third motor (55), a third limiting rod (56) and two positioning plates (57), wherein the support base (51) is fixedly arranged on the right side of the base (1), the cylinder (52) is fixedly arranged on the top of the support base (51), the moving box (53) is fixedly connected to the driving end of the cylinder (52), one side of the moving box (53) is provided with an opening, and the bidirectional screw (54) is fixedly arranged on the top of the supporting base (51). The two ends are respectively connected to the left and right sides of the moving box (53) for rotation. The third motor (55) is fixedly arranged on the left side outside the moving box (53), and the third motor (55) is fixedly connected to one end of the bidirectional screw (54). The third limiting rod (56) is fixedly arranged between the left and right sides in the connecting box (41). The two positioning plates (57) are respectively connected to the left and right sides of the bidirectional screw (54) and the third limiting rod (56), and the second moving block (45) is movably connected to the opening of the moving box (53).

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