Metal oxide semiconductor (MOS) tube three-pin bending jig

Abstract

The utility model relates to an MOS tube three-pin bending jig, which belongs to the technical field of bending jigs and comprises a pressure head assembly, a bearing seat is arranged below the pressure head assembly, a guide shaft and a first compression spring are arranged between the pressure head assembly and the bearing seat, the first compression spring is sleeved on the guide shaft, one end of the guide shaft is fixedly connected with the bearing seat, and the other end of the guide shaft is fixedly connected with the bearing seat. The pressing head assembly and the bearing seat are arranged, the pin pre-pressing pressing head, the middle pin floating pressing head, the pin fixing and bending pressing heads on the two sides, the middle pin fixing and bending pressing head and the compression spring are utilized, the pressing head assembly and the bearing seat are arranged, and the pressing head assembly and the bearing seat are connected in a sliding mode. Bending of the pins on the two sides of the MOS transistor and successive bending of the two pins in the middle of the MOS transistor are achieved, finally one-time pressing action is achieved, bending of all the three pins of the MOS transistor is achieved, bending consistency is good, efficiency is high, and batch product manufacturing can be achieved.

Description

Technical Field

[0001] The utility model relates to a three-pin bending fixture for a MOS tube, belonging to the technical field of bending fixtures. Background Art

[0002] MOS tube is one of the frequently used original components in PCBA circuit boards in the electronics manufacturing industry. When using it, the three pins of the MOS tube are generally pre-bent according to the installation hole position of the PCBA board, and then the pre-bent MOS tube is installed in the corresponding position on the PCBA board.

[0003] When the number of MOS tubes is small, the pins are generally pre-bent manually. During manual bending, the operator generally uses needle-nosed pliers to bend the pins of the MOS tube one by one. The disadvantage of this operation is that the bending consistency of the MOS tube pins is poor, and the MOS tube after the pins are pre-bent is not easy to install on the PCBA board.

[0004] When the number of MOS tubes is large, it is generally necessary to customize special automatic bending equipment for bending, but the equipment is very expensive. Summary of the invention

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned traditional technology and provide a three-pin bending fixture for MOS tubes, which can realize one-time pressing action to bend all three pins of the MOS tube, has good bending consistency and high efficiency, and can realize batch product production.

[0006] The purpose of the utility model is achieved through the following technical measures: a three-pin bending fixture for a MOS tube, including a pressure head assembly, a bearing seat is provided below the pressure head assembly, a guide shaft and a first compression spring are provided between the pressure head assembly and the bearing seat, the first compression spring is sleeved on the guide shaft, one end of the guide shaft is fixedly connected to the bearing seat, and the other end of the guide shaft passes through the pressure head assembly and is slidably connected to the pressure head assembly.

[0007] As a further improvement of the above technical solution:

[0008] The pressure head assembly comprises a spring adjustment seat, and an upper bending pressure head fixing seat is fixedly connected below the spring adjustment seat.

[0009] The spring adjustment seat is provided with a plurality of spring holes extending vertically downwards, the upper parts of the spring holes are provided with threads, and the spring holes are threadedly connected with spring force adjustment top screws.

[0010] A spring washer is provided below the spring force regulating top screw, and a second compression spring is provided below the spring washer.

[0011] A connecting plate is connected below the second compression spring, and a pin pre-compression pressure head and a middle pin floating pressure head are fixedly connected below the connecting plate. The pin pre-compression pressure head and the middle pin floating pressure head are both vertically arranged with respect to the connecting plate.

[0012] The pin pre-pressing head and the middle pin floating head are arranged vertically, and the pin pre-pressing head and the middle pin floating head pass through the upper bending head fixing seat, and the upper bending head fixing seat is provided with a through hole that can accommodate the pin pre-pressing head and the middle pin floating head to pass through.

[0013] The height of the pin pre-pressing head is greater than the height of the middle pin floating pressure head, and the lower end of the middle pin floating pressure head has an inclined portion.

[0014] The lower part of the upper bending head fixing seat is fixedly connected with the bending heads for fixing the pins on both sides and the bending head for fixing the pins in the middle. There are two bending heads for fixing the pins on both sides, which are respectively located on both sides of the bending head for fixing the pins in the middle and are symmetrically arranged. The height of the bending heads for fixing the pins on both sides is smaller than the height of the bending head for fixing the pins in the middle. The bending heads for fixing the pins on both sides and the bending head for fixing the pins in the middle are arranged on the front sides of the pin pre-pressing head and the floating head for the middle pin.

[0015] The bearing seat is provided with a positioning groove and a pin placement groove, the pin placement groove comprises a middle pin placement groove and two side pin placement grooves, and the pin placement groove extends to the side of the bearing seat.

[0016] The other end of the guide shaft is provided with a blocking piece and a fastening bolt.

[0017] Due to the adoption of the above technical scheme, compared with the prior art, the utility model has the following advantages: the utility model sets a pressure head assembly and a bearing seat, utilizes a pin pre-pressing pressure head, a middle pin floating pressure head, a fixed bending pressure head for pins on both sides, a fixed bending pressure head for pins on the middle and a compression spring, to realize the bending of the pins on both sides of the MOS tube and the two successive bendings of the middle pin, and finally realizes one pressing action to realize the bending of all three pins of the MOS tube, has good bending consistency and high efficiency, and can realize batch product production.

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a three-pin bending fixture for a MOS tube in an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of a MOS tube three-pin bending fixture from another angle in an embodiment of the utility model;

[0021] Figure 3This is a structural schematic diagram of a three-pin bending fixture for a MOS tube in an embodiment of the utility model;

[0022] Figure 4 for Figure 3 Left view of

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the MOS tube placed on the MOS tube three-pin bending fixture;

[0024] Figure 6 It is a structural explosion diagram of a pressure head assembly of a three-pin bending fixture for a MOS tube in an embodiment of the utility model;

[0025] Figure 7 This is a structural schematic diagram of a three-pin bending fixture for a MOS tube in an embodiment of the utility model when in use;

[0026] Figure 8 for Figure 7 A partial enlarged view of the middle A part;

[0027] Fig. 9 This is another structural schematic diagram of a three-pin bending fixture for a MOS tube in an embodiment of the utility model when in use;

[0028] Fig.10 for Fig. 9 A partial enlarged view of part B in the middle;

[0029] Fig.11 This is another structural schematic diagram of a three-pin bending fixture for a MOS tube in an embodiment of the utility model when in use;

[0030] Fig.12 for Fig.11 A partial enlarged view of the middle C part;

[0031] Fig.13 This is a schematic diagram of the MOS tube structure after the three pins are bent.

[0032] In the figure, 1-pressing head assembly, 2-bearing seat, 3-guide shaft, 4-first compression spring, 5-blocking plate, 6-fastening bolt, 7-spring adjustment seat, 8-upper bending press head fixing seat, 9-spring hole, 10-spring force adjustment top screw, 11-spring gasket, 12-second compression spring, 13-connecting plate, 14-pin pre-pressing press head, 15-middle pin floating press head, 16-inclined part, 17-pins on both sides fixed bending press head, 18-middle pin fixed bending press head, 19-positioning groove, 20-middle pin placement groove, 21-pin placement grooves on both sides, 22-MOS tube, 23-middle pin of MOS tube, 24-pins on both sides of MOS tube, 25-fastening top screw. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] 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 indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, 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 features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined. Example

[0036] like Figure 1-6 As shown, a three-pin bending fixture for MOS tubes includes a pressing head assembly 1, a bearing seat 2 is provided below the pressing head assembly 1, a guide shaft 3 and a first compression spring 4 are provided between the pressing head assembly 1 and the bearing seat 2, the first compression spring 4 is sleeved on the guide shaft 3, one end of the guide shaft 3 is fixedly connected to the bearing seat 2, the other end of the guide shaft 3 passes through the pressing head assembly 1 and is slidably connected to the pressing head assembly 1, and the other end of the guide shaft 3 is provided with a baffle 5 and a fastening bolt 6.

[0037] The pressure head assembly 1 includes a spring adjustment seat 7, an upper bending pressure head fixing seat 8 is fixedly connected to the lower part of the spring adjustment seat 7, the spring adjustment seat 7 is fixedly connected to the upper bending pressure head fixing seat 8 by bolts, a plurality of spring holes 9 are provided on the spring adjustment seat 7, the upper part of the spring hole 9 has a thread, the spring hole 9 is threadedly connected with a spring force adjustment top screw 10, the number of spring holes 9 in this embodiment is three, a spring gasket 11 is provided below the spring force adjustment top screw 10, a second compression spring 12 is provided below the spring gasket 11, a connecting plate 13 is connected to the lower part of the second compression spring 12, and a connecting plate 13 is fixed below the connecting plate 13 A pin pre-stressing head 14 and an intermediate pin floating head 15 are fixedly connected, and the pin pre-stressing head 14 and the intermediate pin floating head 15 are both vertically arranged with respect to the connecting plate 13, and the pin pre-stressing head 14 and the intermediate pin floating head 15 are vertically arranged, and the pin pre-stressing head 14 and the intermediate pin floating head 15 pass through the upper bending head fixing seat 8, and the upper bending head fixing seat 8 is provided with a through hole that can accommodate the pin pre-stressing head 14 and the intermediate pin floating head 15 to pass through, and the height of the pin pre-stressing head 14 is greater than the height of the intermediate pin floating head 15, and the lower end of the intermediate pin floating head 15 has an inclined portion 16.

[0038] The lower part of the upper bending head fixing seat 8 is fixedly connected with the two side pin fixing bending pressure heads 17 and the middle pin fixing bending pressure head 18 by tightening the top screw 25. There are two two side pin fixing bending pressure heads 17, which are respectively located on both sides of the middle pin fixing bending pressure head 18 and are symmetrically arranged. The height of the two side pin fixing bending pressure heads 17 is less than the height of the middle pin fixing bending pressure head 18. The two side pin fixing bending pressure heads 17 and the middle pin fixing bending pressure head 18 are arranged on the front side of the pin pre-pressure pressure head 14 and the middle pin floating pressure head 15.

[0039] The supporting seat 2 is provided with a positioning groove 19 and a pin placement groove for placing the MOS tube and its three pins. The pin placement groove includes a middle pin placement groove 20 and two side pin placement grooves 21. The pin placement groove extends to the side of the supporting seat 2. The two side pin fixing bending press heads 17, the middle pin fixing bending press head 18, the pin pre-pressing press head 14, and the middle pin floating press head 15 are all arranged above the pin placement groove.

[0040] During operation, the MOS tube 22 is first placed in the positioning groove 19 of the bearing seat 2, and a downward force F is applied directly above the pressure head assembly 1, such as Figure 7-8 As shown, the pressure head assembly 1 moves downward, and the pin pre-pressing pressure head 14 below the pressure head assembly 1 first contacts the MOS tube pins and presses the three pins of the MOS tube; Figure 9-10As shown, the pressure head assembly 1 continues to move downward under the action of F, and the pin pre-pressure head 14 pressing the MOS tube pin overcomes the pressure of the second compression spring 12 above the pin pre-pressure head 14 and moves upward relative to the pressure head assembly 1; then the middle pin floating pressure head 15 contacts and presses down the middle pin 23 of the MOS tube, and the middle pin 23 of the MOS tube is then bent, and finally the middle pin floating pressure head 15 completely presses the middle pin 23 of the MOS tube into the middle pin placement groove 20 of the supporting seat 2.

[0041] like Figure 11-12 As shown, the pressure head assembly 1 continues to move downward, the pin pre-pressing pressure head 14 and the middle pin floating pressure head 15 overcome the pressure of their respective second compression springs 12, and move upward relative to the pressure head assembly 1. The two side pin fixed bending pressure heads 17 and the middle pin fixed bending pressure head 18 respectively press down the two side pins 24 of the MOS tube and the middle pin 23 of the MOS tube, and the three pins are bent at the same time. Finally, the bottom of the pressure head assembly 1 contacts the upper surface of the bearing seat 2, and the entire pressing action is completed. Then the downward force F is removed, and the pressure head assembly 1 rises to the top along the guide shaft 3 under the action of the first compression spring 4. At this time, the MOS tube that has been bent is removed, as shown in FIG. Fig.13 shown.

[0042] When bending, a cylinder or a manual tamping machine can be used to provide downward pressure for the pressing head assembly 1.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-pin bending fixture for MOS tubes, characterized by: The invention comprises a pressing head assembly (1), a bearing seat (2) is provided below the pressing head assembly (1), a guide shaft (3) and a first compression spring (4) are provided between the pressing head assembly (1) and the bearing seat (2), the first compression spring (4) is sleeved on the guide shaft (3), one end of the guide shaft (3) is fixedly connected to the bearing seat (2), and the other end of the guide shaft (3) passes through the pressing head assembly (1) and is slidably connected to the pressing head assembly (1).

2. A three-pin bending jig for MOS tube according to claim 1, characterized in that: The pressure head assembly (1) comprises a spring adjustment seat (7), and an upper bending pressure head fixing seat (8) is fixedly connected below the spring adjustment seat (7).

3. A three-pin bending jig for MOS tube according to claim 2, characterized in that: The spring adjustment seat (7) is provided with a plurality of spring holes (9) extending vertically downwards, the upper portion of the spring holes (9) is provided with threads, and the spring holes (9) are threadedly connected with spring force adjustment top screws (10).

4. The three-pin bending jig for MOS tube according to claim 3, characterized in that: A spring washer (11) is provided below the spring force regulating top screw (10), and a second compression spring (12) is provided below the spring washer (11).

5. The three-pin bending jig for MOS tube according to claim 4, characterized in that: A connecting plate (13) is connected below the second compression spring (12), and a pin pre-compression head (14) and an intermediate pin floating head (15) are fixedly connected below the connecting plate (13), and the pin pre-compression head (14) and the intermediate pin floating head (15) are both arranged vertically with respect to the connecting plate (13).

6. The three-pin bending jig for MOS tube according to claim 5, characterized in that: The pin pre-pressing head (14) and the middle pin floating head (15) are arranged vertically, and the pin pre-pressing head (14) and the middle pin floating head (15) pass through the upper bending head fixing seat (8), and the upper bending head fixing seat (8) is provided with a through hole capable of accommodating the pin pre-pressing head (14) and the middle pin floating head (15) to pass through.

7. The three-pin bending jig for MOS tube according to claim 6, characterized in that: The height of the pin pre-pressing head (14) is greater than the height of the middle pin floating pressure head (15), and the lower end of the middle pin floating pressure head (15) has an inclined portion (16).

8. The three-pin bending jig for MOS tube according to claim 7, characterized in that: The lower part of the upper bending head fixing seat (8) is fixedly connected with two side pin fixing bending heads (17) and a middle pin fixing bending head (18). There are two side pin fixing bending heads (17), which are respectively located on both sides of the middle pin fixing bending head (18) and are symmetrically arranged. The height of the side pin fixing bending heads (17) is less than the height of the middle pin fixing bending head (18). The side pin fixing bending heads (17) and the middle pin fixing bending head (18) are arranged in front of the pin pre-pressing head (14) and the middle pin floating head (15).

9. The three-pin bending jig for MOS tube according to claim 1, characterized in that: The bearing seat (2) is provided with a positioning groove (19) and a pin placement groove, wherein the pin placement groove comprises a middle pin placement groove (20) and two side pin placement grooves (21), and the pin placement grooves extend to the side of the bearing seat (2).

10. The three-pin bending jig for MOS tube according to claim 1, characterized in that: The other end of the guide shaft (3) is provided with a baffle (5) and a fastening bolt (6).

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