A rectifier bridge pin automatic placement device

Abstract

The application discloses a rectifier bridge pin automatic placing device, which comprises a receiving unit, a first pin placing unit and a second pin placing unit. The receiving unit is used for vertically stacking a plurality of pin racks and rotating the uppermost pin rack. The first pin placing unit comprises a fourth linear mechanism arranged in parallel with the conveying direction of an L-shaped conveying groove, a fifth linear mechanism arranged on the sliding end of the fourth linear mechanism, and a plate clamping mechanism arranged on one end of the output shaft of a second rotating motor and used for clamping a first pin plate. The second pin placing unit comprises a seventh linear mechanism arranged in parallel with the conveying direction of the L-shaped conveying groove, an eighth linear mechanism arranged on the sliding end of the seventh linear mechanism, and a rotating plate arranged on one end of the output shaft of a third rotating motor, wherein one side surface of the rotating plate is provided with the plate clamping mechanism used for clamping a second pin plate, and one end of the third rotating motor is provided with a guide box with a plurality of T-shaped through grooves arranged in a predetermined interval. The application can automatically place the pins on the pin racks and save labor.

Description

Technical Field

[0001] This invention relates to the technical field of rectifier bridge pin processing, and in particular to an automatic rectifier bridge pin placement device. Background Technology

[0002] A rectifier bridge typically has four pins, which need to be soldered during manufacturing, as shown in the attached diagram. Figure 12 As shown, this includes two straight pins 41 in the middle and two L-shaped pins 42 on either side. To facilitate soldering these four pins, some auxiliary tools are required. (See attached diagram.) Figure 13 As shown, this is a common type of lead frame 43, which has two groups of lead slots 44 arranged in a straight line in each group. The lead slots 44 include straight slots and L-shaped slots. Before soldering, multiple lead frames 43 need to be stacked vertically. Starting from the top lead frame 43, multiple pairs of straight leads 41 are placed into the straight slots on one side in batches. Then, the lead frame 43 is rotated 180°, and multiple pairs of straight leads 41 are placed into the straight slots on one side in batches again. Similarly, L-shaped leads 42 are placed into the L-shaped slots on both sides in batches. After placement, each lead will protrude a predetermined distance from the lead frame 43. Once the top lead frame 43 is full of leads, it needs to be removed for subsequent process steps. To achieve batch placement, there are also common auxiliary tools, as shown in the attached diagram. Figure 14 The first pinboard 45 shown has multiple pairs of slots on one side of its upper surface for temporarily storing straight pins 41. Figure 15 The upper surface of the second pinboard 46 shown has multiple slots that match the long side of the L-shaped pin 42 and are used to temporarily store the L-shaped pin 42. Multiple first pinboards 45 or multiple second pinboards 46 are each continuously conveyed on the L-shaped conveyor groove 47 via a friction conveyor belt. Figure 8 As shown, two second pin boards 46 connected end-to-end are conveyed to the end of the L-shaped conveying trough 47, as... Figure 16 As shown, a limiting plate 48 is provided at the end of the L-shaped conveying trough 47, and an extension 49 is also provided on one side of the end of the L-shaped conveying trough 47, such as... Figure 17As shown, the side of the first pin plate 45 or the second pin plate 46 without pins is attached to the vertical part of the L-shaped conveying groove 47. After the first pin plate 45 or the second pin plate 46 is conveyed to one end of the limiting plate 48, its side is aligned with the side of the extension 49. When placing pins, the operator needs to hold the A end and / or B end of the first pin plate 45 or the second pin plate 46, pick up the first pin plate 45 and tilt the straight pin 41 from the outside of the pin holder 43 into the straight groove, or pick up the second pin plate 46 to the outside of the pin holder 43, then flip the second pin plate 46 and let the long side of the L-shaped pin 42 enter the L-shaped groove first. At this time, the short side of the L-shaped pin 42 is vertical. It is necessary to manually turn or shake the pin holder 43 to make the short side also fall into the L-shaped groove. The empty first pin plate 45 and the second pin plate 46 need to be collected for later use.

[0003] Placing the pins requires numerous manual steps, which is time-consuming and labor-intensive. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides an automatic pin placement device for rectifier bridges, which can automatically place each pin on the pin rack, saving manpower.

[0005] In order to achieve the objectives of this invention, the following technologies are proposed:

[0006] An automatic pin placement device for a rectifier bridge includes a pair of L-shaped conveying channels located in a straight line and having a predetermined spacing, for conveying a first pin board and a second pin board respectively. The first pin board is used to convey straight pins, and the second pin board is used to convey L-shaped pins. The device also includes:

[0007] The receiving unit is located between two L-shaped conveying channels and is used to vertically stack multiple pin holders and rotate the topmost pin holder.

[0008] The first pin placement unit is located on one side of the receiving unit and includes a fourth linear mechanism arranged parallel to the conveying direction of the L-shaped conveying groove. A fifth linear mechanism is provided on its sliding end. A second rotary motor with an output shaft parallel to the conveying direction of the L-shaped conveying groove is provided at one end of the output shaft of the fifth linear mechanism. A plate clamping mechanism for clamping the first pin plate is provided at one end of the output shaft of the second rotary motor.

[0009] The second pin placement unit, located on the other side of the receiving unit, includes a seventh linear mechanism arranged parallel to the conveying direction of the L-shaped conveying trough. An eighth linear mechanism is provided on its sliding end. Below one end of the output shaft of the eighth linear mechanism, a third rotary motor with its output shaft parallel to the conveying direction of the L-shaped conveying trough is provided. One end of the output shaft of the third rotary motor is provided with a rotating plate. One side of the rotating plate is provided with a plate clamping mechanism for clamping the second pin plate. One end of the third rotary motor is provided with a guide box at predetermined intervals. Multiple T-shaped through slots are opened vertically through the guide box. The spacing between adjacent T-shaped through slots is the same as the spacing between adjacent pin slots on the same side of the pin holder. One side of the guide box is provided with a ninth linear mechanism arranged parallel to the conveying direction of the L-shaped conveying trough. Above one end of its output shaft, multiple upper plates are provided. The lower end of the upper plate is provided with a slider that slides into one side of the T-shaped through slot.

[0010] Furthermore, the receiving unit includes a temporary storage and push component and a top limit rotation component. The temporary storage and push component includes a rectangular base plate with right-angle frames at the four corners of its upper surface. A flat plate is provided between the upper ends of two right-angle frames on one side, and an inclined plate is provided on the outside of the flat plate. Multiple springs are also provided at the upper end of the rectangular base plate, and a lifting plate is provided at the upper end of the springs. The lifting plate is slidably engaged with the inner side of each right-angle frame. The upper end of the lifting plate is used to stack multiple pin holders. A first linear mechanism is vertically provided on one side of the rectangular base plate, and a second linear mechanism is provided at the upper end of its output shaft. A push plate is provided above one end of the output shaft of the second linear mechanism.

[0011] Furthermore, the top limit rotation assembly includes a first rotary motor vertically positioned at a predetermined distance above the lifting plate. The lower end of its output shaft is provided with an n-shaped frame, and the lower ends of the two vertical parts of the n-shaped frame are respectively provided with a third linear mechanism. One end of its output shaft is provided with a horizontal plate, and the two ends of the horizontal plate are respectively provided with top limit plates for limiting the uppermost pin frame. A corner groove for accommodating a corner of the upper end face of the pin frame is opened at a corner of the lower end face of the top limit plate.

[0012] Furthermore, the plate clamping mechanism includes a sixth linear mechanism, with an upper clamping block at the lower end of its output shaft, a lower extension plate on one side of the sixth linear mechanism, and a lower clamping block on one side of the lower end of the lower extension plate.

[0013] Furthermore, a square slot for accommodating the first pinboard or the second pinboard is provided on one side of the lower end face of the upper clamping block.

[0014] Furthermore, the lower end of the third rotary motor is provided with an L-shaped connecting frame, and the guide box is located at one end of the horizontal side of the L-shaped connecting frame.

[0015] Furthermore, the output shaft of the ninth linear mechanism is provided with a side plate at one end, a connecting plate at the upper end of the side plate, a long plate at the upper end of the connecting plate, and each upper plate is located at the upper end of the long plate.

[0016] Furthermore, four first blocks arranged in parallel pairs are provided below one side of the fourth linear mechanism, and a first collection frame is provided between the four first blocks.

[0017] Furthermore, four parallel second blocks are provided on one side of the seventh linear mechanism, and a second collection frame is provided between the four second blocks.

[0018] The beneficial effects of this technical solution are as follows:

[0019] The rectifier bridge pin placement device of this application can automatically place straight pins from the first pinboard to the pin holder, place L-shaped pins from the second pinboard to the pin holder, and rotate and push out the topmost pin holder in the stacked pin holders, reducing multiple manual operations and saving manpower. Attached Figure Description

[0020] Figure 1 The overall three-dimensional representation of the embodiment of this application is shown. Figure 1 .

[0021] Figure 2 The overall three-dimensional representation of the embodiment of this application is shown. Figure 2 .

[0022] Figure 3 A partial three-dimensional view of the receiving unit according to an embodiment of this application is shown. Figure 1 .

[0023] Figure 4 A partial three-dimensional view of the receiving unit according to an embodiment of this application is shown. Figure 2 .

[0024] Figure 5 A partial three-dimensional view of the receiving unit according to an embodiment of this application is shown. Figure 3 .

[0025] Figure 6 A perspective view of the first pin placement unit according to an embodiment of this application is shown.

[0026] Figure 7 A partial perspective view of the first pin placement unit according to an embodiment of this application is shown.

[0027] Figure 8 A perspective view of the second pin placement unit according to an embodiment of this application is shown.

[0028] Figure 9 A partial three-dimensional view of the second pin placement unit according to an embodiment of this application is shown. Figure 1 .

[0029] Figure 10 A partial three-dimensional view of the second pin placement unit according to an embodiment of this application is shown. Figure 2 .

[0030] Figure 11 A partial three-dimensional view of the second pin placement unit according to an embodiment of this application is shown. Figure 3 .

[0031] Figure 12 This application illustrates the background technology. Figure 1 .

[0032] Figure 13 This application illustrates the background technology. Figure 2 .

[0033] Figure 14 This application illustrates the background technology. Figure 3 .

[0034] Figure 15 This application illustrates the background technology. Figure 4 .

[0035] Figure 16 This application illustrates the background technology. Figure 5 .

[0036] Figure 17 This application illustrates the background technology. Figure 6 . Detailed Implementation

[0037] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0038] like Figures 1-11 The illustrated automatic pin placement device for a rectifier bridge includes a pair of L-shaped conveying channels 47 located in a straight line and having a predetermined spacing, used for conveying a first pin board 45 and a second pin board 46, respectively. The first pin board 45 is used to convey straight pins 41, and the second pin board 46 is used to convey L-shaped pins 42, as well as a receiving unit 1, a first pin placement unit 2, and a second pin placement unit 3. This device is used for... Figures 12-17 The background art mentioned above describes the automatic operation of several original manual operations.

[0039] The receiving unit 1 is located between two L-shaped conveying channels 47 and is used to vertically stack multiple pin holders 43 and rotate the topmost pin holder 43. The receiving unit 1 includes a temporary storage and pushing component and a top limit rotation component. The temporary storage and pushing component includes a rectangular base plate 11, with right-angle frames 111 at the four corners of its upper surface. A plate 112 is provided between the upper ends of two right-angle frames 111 on one side. An inclined plate 113 for sliding the pin holder 43 down is provided on the outer side of the plate 112. Multiple springs 12 are also provided on the upper end of the rectangular base plate 11. A lifting plate 13 is provided on the upper end of the springs 12. The lifting plate 13 is slidably engaged with the inner side of each right-angle frame 111. The upper end of the lifting plate 13 is used to stack multiple pin holders 43. A first straight line is vertically arranged on one side of the rectangular base plate 11. Mechanism 14 has a second linear mechanism 15 at the upper end of its output shaft. One end of the output shaft of the second linear mechanism 15 has a vertical plate. The upper end of the vertical plate has a push plate 151 for pushing the uppermost pin holder 43. The top limiting rotation assembly includes an inverted L-shaped frame 16 located on one side of the first linear mechanism 14. One end of its horizontal side has a first rotary motor 17 located vertically at a predetermined distance above the lifting plate 13. The lower end of its output shaft has an n-shaped frame 171. The lower ends of the two vertical parts of the n-shaped frame 171 are respectively provided with a third linear mechanism 18. One end of its output shaft has a horizontal plate. The two ends of the horizontal plate are respectively provided with a top limiting plate 19 for limiting the uppermost pin holder 43. A corner groove 191 for accommodating a corner of the upper end of the pin holder 43 is opened at one corner of the lower end face of the top limiting plate 19.

[0040] Specifically, the vertical portion of each L-shaped pin 42 on the second pinboard 46 being transported is further away from the lifting plate 13 than the horizontal portion, and the height of the pin holder 43 limited under the top limit plate 19 is lower than the height of each first pinboard 45 and second pinboard 46 being transported.

[0041] The first pin placement unit 2 is located on one side of the receiving unit 1 and includes a fourth linear mechanism 21 arranged parallel to the conveying direction of the L-shaped conveying groove 47 and located on a bracket. A fifth linear mechanism 22 is provided on its sliding end. One end of the output shaft of the fifth linear mechanism 22 is provided with a second rotary motor 23 whose output shaft is parallel to the conveying direction of the L-shaped conveying groove 47. One end of the output shaft of the second rotary motor 23 is provided with a plate clamping mechanism for clamping the first pin plate 45 or the second pin plate 46. Specifically, the plate clamping mechanism of the first pin placement unit 2 is used to clamp the first pin plate 45. The board clamping mechanism includes a sixth linear mechanism 24, with an upper clamping block 25 at the lower end of its output shaft. A square slot 251 for accommodating the first pin board 45 or the second pin board 46 is provided on one side of the lower end face of the upper clamping block 25. A lower extension plate 26 is provided on one side of the sixth linear mechanism 24. A lower clamping block 261 is provided on one side of the lower end of the lower extension plate 26. Four first stops 27 arranged in parallel pairs are also provided below one side of the fourth linear mechanism 21. A first collection frame 28 is provided between the four first stops 27 for collecting the first pin board 45 that has had its straight pins 41 poured out.

[0042] The second pin placement unit 3 is located on the other side of the receiving unit 1. It includes a seventh linear mechanism 31, which is parallel to the conveying direction of the L-shaped conveying trough 47 and located on a bracket. An eighth linear mechanism 32 is provided on its sliding end. A hanger 321 is provided at one end of the output shaft of the eighth linear mechanism 32. A third rotary motor 33, whose output shaft is parallel to the conveying direction of the L-shaped conveying trough 47, is provided at the lower end of the hanger 321. A rotating plate 331 is provided at one end of the output shaft of the third rotary motor 33. A plate clamping mechanism is also provided on one side of the rotating plate 331. Specifically, the plate clamping mechanism of the second pin placement unit 3 is used to clamp the second pin plate 46. An L-shaped connecting frame 332 is provided at the lower end of the third rotary motor 33. A guide box 34 is provided at one end of the horizontal side of the L-shaped connecting frame 332. The guide box 34 extends vertically through the lower part of the L-shaped connecting frame 332. Multiple T-shaped through slots 341 are provided through the ground. The spacing between each adjacent T-shaped through slot 341 is the same as the spacing between adjacent pin slots 44 on the same side of the pin holder 43. A ninth linear mechanism 35 is provided on one side of the guide box 34, which is parallel to the conveying direction of the L-shaped conveying groove 47. A side plate 351 is provided at one end of its output shaft. A connecting plate is provided at the upper end of the side plate 351. A long plate 36 is provided at the upper end of the connecting plate. Multiple upper plates 361 are provided at the upper end of the long plate 36. A slider 37 is provided at the lower end of the upper plate 361, which is slidably engaged with one side of the T-shaped through slot 341. Four second stops 38 are also provided below one side of the seventh linear mechanism 31, which are arranged in pairs. A second collection frame 39 is provided between the four second stops 38 for collecting the second pin plate 46 that has been poured out of the L-shaped pin 42.

[0043] In this embodiment, the first linear mechanism 14, the second linear mechanism 15, the third linear mechanism 18, the fifth linear mechanism 22, the sixth linear mechanism 24, the eighth linear mechanism 32, and the ninth linear mechanism 35 all use single-axis linear cylinders, while the fourth linear mechanism 21 and the seventh linear mechanism 31 both use rodless linear cylinders.

[0044] Work style:

[0045] First, the top limit plate 19 is opened by each of the third linear mechanisms 18. Then, multiple pin holders 43 are placed on the lifting plate 13. Finally, the top limit plate 19 is closed to complete the preparation work. The subsequent work can be completed automatically.

[0046] The following describes the process of placing pins on a single pin holder 43.

[0047] First, each straight pin 41 is placed by the first pin placement unit 2: first, the plate clamping mechanism of the first pin placement unit 2 clamps one side of one end of the first pin plate 45, then the first pin plate 45 is pushed out by the fifth linear mechanism 22, then the first pin plate 45 is moved to the side of the uppermost pin holder 43 by the fourth linear mechanism 21, then the first pin plate 45 is brought closer to the pin holder 43 by the fifth linear mechanism 22 again, and then the first pin plate 45 is tilted by the second rotary motor 23 so that each straight pin 41 falls into the corresponding linear slot of the pin slot 44.

[0048] Then, each L-shaped pin 42 is placed through the second pin placement unit 3, and each L-shaped pin 42 needs to be placed once in each of the two L-shaped slots of each pin slot 44 on one side of the pin holder 43, specifically as follows: First, the plate clamping mechanism of the second pin placement unit 3 clamps one side of one end of the second pin plate 46, that is, clamps it as follows. Figure 17 In section B, the second pin plate 46 is pushed out by the eighth linear mechanism 32, and then moved to the side of the uppermost pin holder 43 by the seventh linear mechanism 31. Then, the second pin plate 46 is moved closer to the pin holder 43 by the eighth linear mechanism 32 again, and the guide box 34 is positioned above the pin holder 43. Then, the second pin plate 46 is quickly flipped above the guide box 34 by the rotating plate 331 driven by the third rotary motor 33. At this time, the long side of the L-shaped pin 42 falls into the T-shaped through groove 3. On one side of 41, the short side of the L-shaped pin 42 falls vertically into the T-shaped through slot 341. After the long side of the L-shaped pin 42 falls out of the T-shaped through slot 341, when the short side is about to fall out of the T-shaped through slot 341, the slider 37 is pushed to the designated side by the ninth linear mechanism 35, so that the L-shaped pin 42 finally falls completely into the L-shaped slot. Of course, before flipping the second pin plate 46, the slider 37 is already in the position below it where the projection of the pin holder 43 does not have the pin slot 44, ready to push.

[0049] After the pin slots 44 on one side of the top pin holder 43 are filled with pins, the distance between the plate clamping mechanism of the first pin placement unit 2 and the plate clamping mechanism of the second pin placement unit 3 is pulled to the maximum to avoid obstruction. Then, the tube top limiting plate 19 is pushed by the third linear mechanism 18 to limit the top of the pin holder 43. Then, the pin holder 43 is rotated by the first rotary motor 17. When rotating, the other pin holders 43 will not move upward because the bottom surface of the top pin holder 43 still restricts the other pin holders 43. After the top pin holder 43 rotates 180°, the pin placement operation above can be performed again.

[0050] After the pins of the uppermost pin holder 43 are placed, the second linear mechanism 15 can be raised by the first linear mechanism 14. Then, the push plate 151 is pushed by the second linear mechanism 15, causing the pin holder 43 to slide down from the inclined plate 113. Then, the push plate 151 is retracted. At the same time that the push plate 151 and the pin holder 43 come into contact, the top limit plate 19 releases its restriction on the pin holder 43. At the same time that the push plate 151 and the pin holder 43 are no longer in contact, the top limit plate 19 re-restricts the pin holder 43. That is, the push plate 151 can also temporarily restrict the rise of the lower pin holders 43.

[0051] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. An automatic pin placement device for a rectifier bridge, comprising a pair of L-shaped conveying grooves (47) located on a straight line and having a predetermined spacing, respectively used for conveying a first pin board (45) and a second pin board (46), wherein the first pin board (45) is used for conveying straight pins (41) and the second pin board (46) is used for conveying L-shaped pins (42), characterized in that, Also includes: The receiving unit (1) is located between two L-shaped conveying channels (47) for vertically stacking multiple pin holders (43) and rotating the uppermost pin holder (43). The receiving unit (1) includes a temporary storage and pushing component and a top limit rotation component. The temporary storage and pushing component includes a rectangular base plate (11), with right-angle frames (111) at the four corners of its upper surface. A flat plate (112) is provided between the upper ends of the two right-angle frames (111) on one side. An inclined plate (113) is provided on the outside of the flat plate (112) for the pin holder (43) to slide down. The upper end of the rectangular base plate (11) is also provided with multiple springs (12), and the upper end of the springs (12) is provided with a lifting plate (13). The lifting plate (13) is slidably fitted inside each right-angle frame (111). The upper end of the lifting plate (13) is used to stack multiple pin holders (43). The rectangular base plate (11) is vertically provided with a first linear mechanism (14) on one side, and a second linear mechanism (15) is provided at the upper end of its output shaft. A push plate (151) is provided above one end of the output shaft of the second linear mechanism (15) for pushing the uppermost pin holder (43). The first pin placement unit (2) is located on one side of the receiving unit (1) and includes a fourth linear mechanism (21) arranged parallel to the conveying direction of the L-shaped conveying groove (47). A fifth linear mechanism (22) is provided on its sliding end. A second rotary motor (23) with its output shaft parallel to the conveying direction of the L-shaped conveying groove (47) is provided at one end of the output shaft of the fifth linear mechanism (22). A plate clamping mechanism for clamping the first pin plate (45) is provided at one end of the output shaft of the second rotary motor (23). The second pin placement unit (3) is located on the other side of the receiving unit (1). It includes a seventh linear mechanism (31) arranged parallel to the conveying direction of the L-shaped conveying groove (47). An eighth linear mechanism (32) is provided on its sliding end. A third rotary motor (33) with its output shaft parallel to the conveying direction of the L-shaped conveying groove (47) is provided below one end of the output shaft of the eighth linear mechanism (32). A rotating plate (331) is provided at one end of the output shaft of the third rotary motor (33). A plate clamping mechanism for clamping the second pin plate (46) is provided on one side of the rotating plate (331). One end of the third rotary motor (33) has a predetermined interval. A guide box (34) is provided on the ground. Multiple T-shaped through slots (341) are provided on the top and bottom of the guide box (34). The spacing between each adjacent T-shaped through slot (341) is the same as the spacing between the adjacent pin slots (44) on the same side of the pin holder (43). A ninth linear mechanism (35) is provided on one side of the guide box (34) and is parallel to the conveying direction of the L-shaped conveying groove (47). Multiple upper plates (361) are provided above one end of its output shaft. A slider (37) is provided at the lower end of the upper plate (361) and is slidably fitted in one side of the T-shaped through slot (341). The slider (37) is used to push the short side of the L-shaped pin (42).

2. The automatic pin placement device for rectifier bridges according to claim 1, characterized in that, The top limit rotation assembly includes a first rotary motor (17) vertically positioned at a predetermined distance above the lifting plate (13). The lower end of its output shaft is provided with an n-shaped frame (171). The lower ends of the two vertical parts of the n-shaped frame (171) are respectively provided with a third linear mechanism (18). One end of its output shaft is provided with a horizontal plate. The two ends of the horizontal plate are respectively provided with a top limit plate (19) for limiting the uppermost pin frame (43). A corner groove (191) for accommodating a corner of the upper end face of the pin frame (43) is opened at one corner of the lower end face of the top limit plate (19).

3. The automatic pin placement device for rectifier bridges according to claim 1, characterized in that, The plate clamping mechanism of the first pin placement unit (2) includes a sixth linear mechanism (24), with an upper clamping block (25) at the lower end of its output shaft, a lower extension plate (26) on one side of the sixth linear mechanism (24), and a lower clamping block (261) on one side of the lower end of the lower extension plate (26).

4. The automatic pin placement device for rectifier bridges according to claim 3, characterized in that, A square slot (251) for accommodating the first pinboard (45) is provided on one side of the lower end face of the upper clamping block (25).

5. The automatic pin placement device for rectifier bridges according to claim 1, characterized in that, The lower end of the third rotary motor (33) is provided with an L-shaped connecting frame (332), and the guide box (34) is located at one end of the horizontal side of the L-shaped connecting frame (332).

6. The automatic pin placement device for rectifier bridges according to claim 1, characterized in that, The ninth linear mechanism (35) has a side plate (351) at one end of its output shaft, a connecting plate at the upper end of the side plate (351), a long plate (36) at the upper end of the connecting plate, and each upper plate (361) at the upper end of the long plate (36).

7. The automatic pin placement device for rectifier bridges according to claim 1, characterized in that, The fourth linear mechanism (21) is also provided with four first blocks (27) arranged in parallel in pairs below one side, and a first collection box (28) is provided between the four first blocks (27).

8. The automatic pin placement device for rectifier bridges according to claim 1, characterized in that, The seventh linear mechanism (31) is also provided with four parallel second blocks (38) on one side, and a second collection box (39) is provided between the four second blocks (38).

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