Automatic pin pressing device
The automated pin clamping device uses a pneumatic-hydraulic booster cylinder and a pressure rod to precisely clamp the pins, solving the problems of pin damage and accuracy during installation and improving the yield rate of connectors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU INVENT PRECISION MACHINING CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-06-05
AI Technical Summary
In existing technologies, PIN pins are easily damaged or have their installation accuracy altered during connector installation, leading to a decrease in connector production yield.
The device employs a highly automated PIN clamping mechanism, including a base, a pressing assembly, a connecting assembly, and a pressing head assembly. It utilizes a pneumatic-hydraulic booster cylinder and a pressure rod to precisely clamp the PIN pins, and combines a pressure sensor and an elastic element to control the pressure, ensuring that the PIN pins and connector body are not damaged.
This improves the connection strength and installation accuracy between the PIN pins and the connector body, thereby increasing the connector's production yield.
Smart Images

Figure CN224329057U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connector manufacturing technology, and in particular to an automated PIN pin clamping device. Background Technology
[0002] In the fields of electronics, communications, aerospace, and industrial equipment, connectors are core components for connecting circuits or mechanical parts, and their performance directly affects system reliability. Pins (or contacts, conductive terminals), as key components in connectors for transmitting current or signals, typically need to be installed within the connector's insulating body (such as a plastic housing) at specific spacing, angles, and depths. Due to varying operating environments, connectors require specific connection strength from the pins, necessitating a certain degree of compression. Because connectors demand high installation precision, manual or machine-based pin compression can damage the pins or alter the installation accuracy between the pins and the connector body, leading to a decrease in connector yield. Utility Model Content
[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide an automated PIN pin clamping device with a high degree of automation, firm clamping and high clamping accuracy.
[0004] This utility model discloses an automated PIN pin clamping device, which is used to strengthen the connection between the connector body and the PIN pin in a connector. The clamping device includes a base and a pressing assembly, a connecting assembly, and a pressing head assembly mounted on the base. The pressing head assembly includes a pneumatic-hydraulic booster cylinder, the output end of which is connected to the pressing head assembly via the connecting assembly. The pressing head assembly includes a pressure rod arranged along a third direction. The connector is positioned below the pressure rod along the third direction. The end of the pressure rod near the connector is configured as a hollow first clamping part that is inclined towards the axis. When the pneumatic-hydraulic booster cylinder is working, the first clamping part contacts and clamps the second clamping part on the connector body near the PIN pin.
[0005] In one or more embodiments of this utility model, the pressing assembly further includes a cylinder mounting component, a first bearing, and an intermediate shaft. The cylinder mounting component is mounted on the upper part of the base, the gas-hydraulic booster cylinder is mounted on the cylinder mounting component, the base has a first bearing mounted below the cylinder mounting component, the intermediate shaft is mounted on the base via the first bearing, the upper end of the intermediate shaft is in contact with the output end of the gas-hydraulic booster cylinder, and the lower end of the intermediate shaft is in contact with the connecting component.
[0006] In one or more embodiments of the present invention, the connecting assembly includes a first mounting plate, a guide rail, a slider, a second mounting plate, and a top plate, wherein the first mounting plate is mounted on the side of the base, the first mounting plate is provided with a guide rail along a third direction, the slider is mounted on the guide rail, the second mounting plate is mounted on the slider, the top plate is mounted on the top of the second mounting plate, and the pressure head assembly is mounted on the lower part of the second mounting plate.
[0007] In one or more embodiments of the present invention, the connecting assembly further includes a first proximity sensor, a second proximity sensor, and a stop pin. The stop pin has at least two sets respectively mounted on the top plate and the pressure head assembly. The first proximity sensor and the second proximity sensor are respectively mounted on the upper and lower parts of the second mounting plate to detect the stop pin at the corresponding position.
[0008] In one or more embodiments of this utility model, the pressure head assembly further includes a lower pressure block, a lower pressure block mounting plate, a connecting block, a movable block, a linear bearing, a guide rod, an intermediate rod, a first pressing part, an elastic element, a lifting rod, and a spring. The lower pressure block mounting plate is mounted on the bottom of a second mounting plate, and a groove is provided at the bottom of the second mounting plate. The lower pressure block is mounted on the lower pressure block mounting plate within the groove. The connecting block is mounted on the lower part of the lower pressure block mounting plate, and a linear bearing is provided within the connecting block. The guide rod is mounted within the linear bearing, and both ends of the linear bearing are respectively connected to the lower pressure block mounting plate and the movable block. An elastic element is provided on the lower pressure block mounting plate and the movable block. An intermediate rod is also provided within the connecting block. One end of the intermediate rod abuts against the lower pressure block, and the other end is slidably disposed within the pressure rod. A spring is also provided between the intermediate rod and the connecting block. One end of the pressure rod is engaged with the connecting block, and the other end is slidably disposed on the movable block. A fixing slot is provided at the end of the movable block for engaging the upper surface of the connector body, and the movable end of the pressure rod passes through the fixing slot.
[0009] In one or more embodiments of the present invention, the pressing assembly further includes a guide block and a pressure sensor. The guide block is disposed on the top plate, the pressure sensor is disposed inside the guide block, and the intermediate shaft passes through the guide block and contacts the upper part of the pressure sensor.
[0010] In one or more embodiments of this utility model, the connector is placed on a carrier, the carrier is mounted on a rotating station, and a lifting assembly is also mounted on the base, the lifting assembly being disposed at the lower part of the carrier.
[0011] In one or more embodiments of this utility model, the lifting assembly includes a pad block, a transverse cylinder, a sliding block, a first fixing member, a lifting block, and an end cap. The transverse cylinder is installed on the upper part of the pad block, and the movable end of the transverse cylinder is connected to the sliding block. The sliding block and the lifting block are in contact, and their contact surfaces are inclined. The first fixing member is sleeved on the outer side of the lifting block. The first fixing member is installed on the pad block, and the top of the first fixing member is provided with an end cap. The end cap has an opening on the projection of the first fixing member. When the transverse cylinder pushes the sliding block closer to the lifting block, the lifting block passes through the opening at the top of the end cap to press against the bottom of the support member.
[0012] In one or more embodiments of the present invention, the lifting assembly further includes a second spring and a third proximity sensor. The second spring is disposed between the end cap and the sliding block to achieve the reset of the sliding block, and the third proximity sensor is mounted on the first fixing member for detection.
[0013] In one or more embodiments of this utility model, a vacuum dust collector is also installed on the base.
[0014] The beneficial effects of this utility model are: this utility model uses the pressing component, the connecting component and the pressing head component to squeeze the PIN insertion position on the connector, so that the upper part of the connector body near the PIN is pressed and moves towards the middle due to the pressure, thereby giving the insertion between the PIN and the connector a certain strength.
[0015] This invention uses a pressure sensor and elastic element during connector press-fitting to ensure that the PIN pins are pressed tightly against the connector body without affecting the tooling accuracy of the PIN pins and connector, thereby improving the yield rate of connector production. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of an automated PIN pin clamping device in one embodiment of the present invention;
[0017] Figure 2 This is a front view of an automated PIN clamping device according to an embodiment of the present invention;
[0018] Figure 3 This is an isometric view of an automated PIN needle clamping device according to an embodiment of the present invention;
[0019] Figure 4 This is a schematic diagram of the connecting component in one embodiment of the present invention;
[0020] Figure 5 This is a top view of the connecting component in one embodiment of the present invention;
[0021] Figure 6This is a cross-sectional view of the connecting component in one embodiment of the present invention;
[0022] Figure 7 This is a cross-sectional view of the pressure head assembly in one embodiment of the present invention;
[0023] Figure 8 This is a schematic diagram of the connector structure according to an embodiment of the present invention;
[0024] Figure 9 This is a cross-sectional view of the connector in one embodiment of the present invention;
[0025] Figure 10 This is a schematic diagram of the internal structure of the lifting assembly in one embodiment of the present invention.
[0026] Figure 11 This is a cross-sectional view of the lifting assembly in one embodiment of the present invention;
[0027] Figure 12 This is a schematic diagram of the internal structure of the lifting component in one embodiment of the present invention.
[0028] In the diagram: Base 100, Pressing Assembly 20, Pneumatic-Hydraulic Booster Cylinder 21, Cylinder Mounting Part 22, First Bearing 23, Intermediate Shaft 24, Guide Block 25, Pressure Sensor 26, Bearing Part 300, Connecting Assembly 30, First Mounting Plate 31, Guide Rail 32, Slider 33, First Proximity Sensor 34, Second Proximity Sensor 35, Stop Pin 36, Second Mounting Plate 37, Top Plate 38, Pressing Head Assembly 40, Pressing Block 41, Pressing Block Mounting Plate 42, Connecting Block 43, Movable Block 44, Fixing Bay 441, Straight Wire bearing 45, guide rod 46, intermediate rod 47, pressure rod 48, first clamping part 481, elastic element 49, lifting rod 49, vacuum dust collector 50, solenoid valve 60, connector 600, connector body 61, second clamping part 611, PIN pin 62, lifting assembly 70, pad block 71, transverse cylinder 72, sliding block 73, first fixing part 74, lifting block 75, end cover 76, second spring 77, third proximity sensor 78, rotary station 800, second sensor 900, pressure reducing valve 90. Detailed Implementation
[0029] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] It should be noted that, unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0032] As described in the background section, when PIN pins are pressed manually or by machine, there is a risk of damaging the PIN pins or changing their installation accuracy, which leads to a decrease in the yield rate of connector production.
[0033] For the above issues, please refer to the appendix. Figures 1-3 As shown, this utility model provides an automated PIN pin clamping device, which is used to tighten the connection between the connector body 61 and the PIN pin 62 in the connector 600. After the PIN pin 62 is inserted into the connector body 61, it needs to be further tightened to meet the strength requirements during use. In this embodiment, the connector 600 is mounted on the carrier 300, and the carrier 300 is mounted on the rotary station 800. The clamping device includes a base 100, a pressing assembly 20, a connecting assembly 30, a pressing head assembly 40, a vacuum dust collector 50, a solenoid valve 60, and a lifting assembly 70, wherein the lifting assembly 70 is mounted on the base 100. At the bottom, the pressing component 20 is installed at the lower part of the base 100 and at the upper part of the base 100. The connecting component 30 is installed at the movable end of the pressing component 20 and slidably installed on the base 100. The other end of the connecting component 30 is equipped with a pressing head component 40. By setting the lifting component 70 and the pressing head component 40, the connector 600 on the carrier 300 is positioned between the lifting component 70 and the pressing head component 40. During operation, the end of the lifting component 70 moves upward to press against the bottom of the carrier 300, and the end of the pressing head component 40 moves downward under the pressure of the pressing component 20 to fasten the connection between the connector body 61 and the PIN pin 62.
[0034] In further embodiments, such as Figures 2-3As shown, the pressing assembly 20 also includes a cylinder mounting part 22, a first bearing 23, and an intermediate shaft 24. The cylinder mounting part 22 is mounted on the upper part of the base 100, and the pneumatic-hydraulic booster cylinder 21 is mounted on the cylinder mounting part 22. The first bearing 23 is mounted on the base 100 below the cylinder mounting part 22. The intermediate shaft 24 is driven to the base 100 through the first bearing 23. The upper end of the intermediate shaft 24 is in contact with the output end of the pneumatic-hydraulic booster cylinder 21, and the lower end of the intermediate shaft 24 is in contact with the connecting assembly 30. In this embodiment, a solenoid valve 60 and a pressure reducing valve 90 are also included to cooperate with the pneumatic-hydraulic booster cylinder 21. When the output end of the pneumatic-hydraulic booster cylinder 21 moves downward along the axial direction of the PIN needle 62, it drives the intermediate shaft 24 below it to move downward, thereby driving the connecting assembly 30 and the pressure head assembly 40. In this embodiment, the pressure head assembly 40 is detachably mounted on the end of the connecting assembly 30. Different pressure head assemblies 40 can be replaced by disassembly to adapt to different models of connectors 600.
[0035] In a further embodiment, the pressing assembly 20 also includes a guide block 25 and a pressure sensor 26. The guide block 25 is disposed on the top plate 38, and the pressure sensor 26 is disposed inside the guide block 25. The intermediate shaft 24 passes through the guide block 25 and contacts the upper part of the pressure sensor 26. By setting the pressure sensor 26, it is ensured that the force applied by the pressing assembly 20 to the connecting assembly 30 is controllable and within the range that the connector body 61 can withstand.
[0036] In further embodiments, such as Figures 3-6 As shown, the connecting assembly 30 includes a first mounting plate 31, a guide rail 32, a slider 33, a second mounting plate 37, and a top plate 38. The first mounting plate 31 is mounted on the side of the base 100, and the guide rail 32 is provided on the first mounting plate 31 along a third direction. The slider 33 is mounted on the guide rail 32. The second mounting plate 37 is mounted on the slider 33. The top plate 38 is mounted on the top of the second mounting plate 37, and the pressure head assembly 40 is mounted on the lower part of the second mounting plate 37. The connecting assembly 30 also includes a first proximity sensor 34, a second proximity sensor 35, and a stop pin 36. At least two sets of stop pins 36 are respectively mounted on the top plate 38 and the pressure head assembly 40. The first proximity sensor 34 and the second proximity sensor 35 are respectively mounted on the upper and lower parts of the second mounting plate 37 to detect the stop pins 36 at corresponding positions. In a further embodiment, the first mounting plate 31 is also provided with a displacement sensor, which works in conjunction with a detection plate provided on the second mounting plate 37 to detect the position of the slider 33 relative to the guide rail 32.
[0037] In a further embodiment, such as Figures 6-7As shown, the pressure head assembly 40 also includes a lower pressure block 41, a lower pressure block mounting plate 42, a connecting block 43, a movable block 44, a fixing slot 441, a linear bearing 45, a guide rod 46, an intermediate rod 47, a pressure rod 48, a first pressing part 481, and an elastic element 49. The lower pressure block mounting plate 42 is mounted on the bottom of the second mounting plate 37. A groove is provided on the bottom of the second mounting plate 37, and the lower pressure block 41 is mounted on the lower pressure block mounting plate 42 within the groove. The connecting block 43 is mounted on the lower part of the lower pressure block mounting plate 42. A linear bearing 45 is provided, and a guide rod 46 is installed inside the linear bearing 45. The two ends of the linear bearing 45 are respectively connected to the lower pressure block mounting plate 42 and the movable block 44. The lower pressure block mounting plate 42 and the movable block 44 are provided with elastic elements 49. An intermediate rod 47 is also provided inside the connecting block 43. One end of the intermediate rod 47 abuts against the lower pressure block 41, and the other end is slidably disposed in the pressure rod 48. A spring 410 is also provided between the intermediate rod 47 and the connecting block 43. One end of the pressure rod 48 is engaged with the connecting block 43, and the other end is slidably disposed on the movable block 44.
[0038] In a further embodiment, such as Figures 10-12 As shown, the lifting assembly 70 includes a pad 71, a transverse cylinder 72, a sliding block 73, a first fixing member 74, a lifting block 75, and an end cap 76. The transverse cylinder 72 is installed on the upper part of the pad 71, and the movable end of the transverse cylinder 72 is connected to the sliding block 73. The sliding block 73 and the lifting block 75 are in contact, and the contact surface between them is inclined. The first fixing member 74 is sleeved on the outer side of the lifting block 75 and is installed on the pad 71. The top of the first fixing member 74 is provided with an end cap 76, and the end cap 76 has an opening on the projection of the first fixing member 74. When the transverse cylinder 72 pushes the sliding block 73 close to the lifting block 75, the lifting block 75 passes through the opening at the top of the end cap 76 to press against the bottom of the support member 300. The lifting assembly 70 also includes a second spring 77 and a third proximity sensor 78. The second spring 77 is disposed between the end cap 76 and the sliding block 73 to reset the sliding block 73, and the third proximity sensor 78 is mounted on the first fixing member 74 for detection.
[0039] Workflow: When the third sensor 78 detects that the rotating station 800 has rotated the carrier assembly 300 with connector 600 into position, the output end of the pneumatic-hydraulic booster cylinder 21 moves downward, thereby driving the intermediate shaft 24 to move downward. The intermediate shaft 24 presses the pressure sensor 26, applying appropriate pressure to the pressure head assembly 40 to press the connector body 61. As the intermediate shaft 24 moves downward, it drives the second mounting plate 37 to move downward, which in turn drives the pressure head assembly 40 to move downward as well. The lower pressure block 41 and the intermediate rod 47 in the pressure head assembly 40 align with the top of the PIN pin 61 and notify the spring 410 to ensure stability during the alignment process. The downward movement of the second mounting plate 37 drives the connecting block 43 to move downward. At this time, the fixing slot 441 at the end of the movable block 44 locks the connector. On the upper end face of the connector body 61, the pressure rod 48 is pressed against the second pressure part 611 on the connector body 61 through the first pressure part 481. The movable block 44 is slidably connected to the connecting block 43 through the linear bearing 46 and the elastic element 49. As the applied pressure increases, because the end of the pressure rod 48 is tilted axially, when the pressure rod 48 begins to squeeze the connector body 61, the opening at the PIN pin 62 on the connector body 61 will shrink towards the middle to squeeze the PIN pin 62, thereby making the connection between the connector body 61 and the PIN pin 62 more secure. During the entire pressing process, the elastic element 49 and the spring 410 provide elastic force to ensure that the pressing process has a certain buffer, so as to ensure that the PIN pin 62 is not damaged or the installation accuracy of the connector 600 is not compromised during pressing.
[0040] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.
Claims
1. An automated PIN pin clamping device, said clamping device being used to secure the connection strength between the connector body (61) and the PIN pin (62) in a connector (600), characterized in that, The clamping device includes a base (100) and a pressing assembly (20), a connecting assembly (30) and a pressing head assembly (40) mounted on the base (100). The pressing head assembly (40) includes a gas-hydraulic booster cylinder (21). The output end of the gas-hydraulic booster cylinder (21) is connected to the pressing head assembly (40) via the connecting assembly (30). The pressing head assembly (40) includes a pressing rod (48) arranged axially along the PIN pin (62). The connector (600) is arranged below the pressing rod (48) axially along the PIN pin (62). The end of the pressing rod (48) near the connector (600) is configured as a first pressing part (481) that is inclined toward the axis and hollow. When the gas-hydraulic booster cylinder (21) is working, the first pressing part (481) contacts and presses the second pressing part (611) near the PIN pin (62) on the connector body (61).
2. The PIN pin automatic clamping device according to claim 1, characterized in that, The pressing assembly (20) further includes a cylinder mounting part (22), a first bearing (23), and an intermediate shaft (24). The cylinder mounting part (22) is mounted on the upper part of the base (100), the gas-liquid booster cylinder (21) is mounted on the cylinder mounting part (22), the first bearing (23) is mounted on the base (100) below the cylinder mounting part (22), and the intermediate shaft (24) is driven and mounted on the base (100) through the first bearing (23). The upper end of the intermediate shaft (24) is in contact with the output end of the gas-liquid booster cylinder (21), and the lower end of the intermediate shaft (24) is in contact with the connecting assembly (30).
3. The PIN pin automatic clamping device according to claim 2, characterized in that, The connecting assembly (30) includes a first mounting plate (31), a guide rail (32), a slider (33), a second mounting plate (37), and a top plate (38). The first mounting plate (31) is mounted on the side of the base (100). The first mounting plate (31) is provided with a guide rail (32) along a third direction. The slider (33) is mounted on the guide rail (32). The second mounting plate (37) is mounted on the slider (33). The top plate (38) is mounted on the top of the second mounting plate (37). The pressure head assembly (40) is mounted on the lower part of the second mounting plate (37).
4. The PIN pin automatic clamping device according to claim 3, characterized in that, The connecting assembly (30) further includes a first proximity sensor (34), a second proximity sensor (35), and a stop pin (36). The stop pin (36) has at least two sets installed on the top plate (38) and the pressure head assembly (40), respectively. The first proximity sensor (34) and the second proximity sensor (35) are installed on the upper and lower parts of the second mounting plate (37) to detect the stop pin (36) at the corresponding positions.
5. The PIN pin automatic clamping device according to claim 3, characterized in that, The pressure head assembly (40) further includes a lower pressure block (41), a lower pressure block mounting plate (42), a connecting block (43), a movable block (44), a linear bearing (45), a guide rod (46), an intermediate rod (47), a first pressing part (481), an elastic element (49), a lifting rod (49), and a spring (410). The lower pressure block mounting plate (42) is mounted on the bottom of a second mounting plate (37), and the bottom of the second mounting plate (37) has a groove. The lower pressure block (41) is mounted on the lower pressure block mounting plate (42) within the groove. The connecting block (43) is mounted on the lower part of the lower pressure block mounting plate (42), and a linear bearing (45) is provided inside the connecting block (43). The guide rod (46) is mounted inside the linear bearing (45). The two ends of the linear bearing (45) are respectively connected to the lower pressure block mounting plate (42) and the movable block (44). The lower pressure block mounting plate (42) and the movable block (44) are provided with elastic elements (49). The connecting block (43) is also provided with an intermediate rod (47). One end of the intermediate rod (47) abuts against the lower pressure block (41), and the other end is slidably disposed in the pressure rod (48). A spring (410) is also provided between the intermediate rod (47) and the connecting block (43). One end of the pressure rod (48) is engaged with the connecting block (43), and the other end is slidably disposed on the movable block (44). The end of the movable block (44) is provided with a fixing slot (441) for locking the upper end face of the connector body (62). The movable end of the pressure rod (48) passes through the fixing slot (441).
6. The PIN pin automated clamping device according to claim 3, characterized in that, The pressing assembly (20) also includes a guide block (25) and a pressure sensor (26). The guide block (25) is disposed on the top plate (38), and the pressure sensor (26) is disposed inside the guide block (25). The intermediate shaft (24) passes through the guide block (25) and contacts the upper part of the pressure sensor (26).
7. The PIN pin automatic clamping device according to claim 1, characterized in that, The connector (600) is placed on the carrier (300), the carrier (300) is mounted on the rotary station (800), and the base (100) is also equipped with a lifting assembly (70), which is located at the lower part of the carrier (300).
8. The PIN pin automatic clamping device according to claim 7, characterized in that, The lifting assembly (70) includes a pad (71), a transverse cylinder (72), a sliding block (73), a first fixing member (74), a lifting block (75), and an end cap (76). The transverse cylinder (72) is mounted on the upper part of the pad (71), and its movable end is connected to the sliding block (73). The sliding block (73) and the lifting block (75) are in contact, and their contact surface is an inclined plane. The outer surface of the lifting block (75)... The side sleeve is provided with a first fixing member (74), which is installed on the pad (71). The top of the first fixing member (74) is provided with an end cap (76). The end cap (76) has an opening on the projection of the first fixing member (74). When the transverse cylinder (72) pushes the sliding block (73) close to the lifting block (75), the lifting block (75) passes through the opening at the top of the end cap (76) to press against the bottom of the carrier (300).
9. The PIN pin automatic clamping device according to claim 8, characterized in that, The lifting assembly (70) also includes a second spring (77) and a third proximity sensor (78). The second spring (77) is disposed between the end cap (76) and the sliding block (73) to achieve the reset of the sliding block (73). The third proximity sensor (78) is mounted on the first fixing member (74) for detection.
10. The PIN pin automatic clamping device according to claim 1, characterized in that, A vacuum dust collector (50) is also installed on the base (100).