Automobile pin component and assembly equipment thereof

Abstract

The present invention provides an automotive pin component and its assembly equipment, which relates to the technical field of pin components. The invention comprises a first and a second position-changing frame that are positioned and rotated around a vertical axis. The upper ends of the first and second position-changing frames are respectively provided with four first and second extension plates in a circumferential array. The ends of the first and second extension plates are respectively provided with a first clamp and a second clamp. The circumferential array around the first position-changing frame has an upper shell mechanism, a short needle feeding mechanism, a long needle feeding mechanism, and a needle pressing mechanism that are sequentially arranged and correspond one-to-one with the first clamp. The circumferential array around the second position-changing frame has a transfer mechanism, a bending needle mechanism, a detection mechanism, and a discharge mechanism that are sequentially arranged and correspond one-to-one with the second clamp. The needle pressing mechanism and the transfer mechanism are close to each other. The present invention realizes the automatic assembly of pin components. During assembly, the bent pins are press-fitted in a straight form and then bent, so as to avoid bending and deformation during the press-fitting process, thereby improving assembly efficiency and ensuring assembly quality.

Description

Technical Field

[0001] The present invention relates to the technical field of pin components, and in particular to a pin component for automobiles and an assembly device thereof. Background Art

[0002] Connectors are a common automotive accessory. They are typically soldered onto circuit boards and connected to other components on the vehicle to transmit various signals and control the operation of various parts. With the increasing advancement of advanced automotive safety, networking, and information technology, the number of signals required to be transmitted in vehicles is increasing. To meet these demands within limited installation space, the number of pins on a single connector is increasing.

[0003] To better connect pins, conventional technology often uses both straight and curved pins to stagger the pin connection points. Pin assembly often relies on manual labor and involves complex steps, which impacts assembly efficiency and can easily cause both types of pins to repeatedly bend and deform. This bending and deformation not only shifts the position of the connection point, potentially affecting signal transmission, but also shortens the pin's lifespan. While conventional automated pin assembly equipment is also used, the pins require pressing during installation, which is generally suitable for straight pins and inconvenient for press-fitting curved pins. Summary of the Invention

[0004] The purpose of the present invention is to provide an automotive pin component and its assembly equipment, which can realize the automatic assembly of the pin component. During assembly, the bent pins in the pin component are first press-fitted in a straight form and then bent after the press-fitting is completed to avoid bending and deformation during the press-fitting process, meet the automatic assembly requirements of different types of pins, improve the assembly efficiency of the pin component, ensure the assembly quality of the pin component, and reduce manual labor intensity.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] An assembly device for automotive pin components includes a vertically arranged first traverse frame, with four first extension plates arranged horizontally and perpendicular thereto arranged in a circumferential array on the upper end of the first traverse frame, each first extension plate being provided with a first fixture at one end away from the first traverse frame, and the first traverse frame being positioned and rotated about a vertical axis; an upper shell mechanism, a short pin feeding mechanism, a long pin feeding mechanism, and a pin pressing mechanism are arranged in a circumferential array around the first traverse frame, the upper shell mechanism, the short pin feeding mechanism, the long pin feeding mechanism, and the pin pressing mechanism being arranged in sequence and corresponding one-to-one to the four first fixtures;

[0007] The second traverse frame is provided with a second traverse frame on a side of the first traverse frame close to the needle pressing mechanism, and a second extension plate is provided in a circumferential array on the upper end of the second traverse frame, which is perpendicular to and horizontally arranged therewith. A second fixture is provided on the end of the second extension plate away from the second traverse frame, and the second traverse frame is positioned and rotated around a vertical axis; a material transfer mechanism, a needle bending mechanism, a detection mechanism and a material discharge mechanism are provided in a circumferential array around the second traverse frame, and the material transfer mechanism, the needle bending mechanism, the detection mechanism and the material discharge mechanism are arranged in sequence and correspond one to one to the four second fixtures;

[0008] The needle pressing mechanism and the material transfer mechanism are respectively located on both sides of the first extension plate at this position. The first clamp corresponding to the needle pressing mechanism and the second clamp corresponding to the material transfer mechanism are located at the same height. The material transfer mechanism horizontally transfers the pin parts that have completed needle pressing in the first clamp corresponding to the needle pressing mechanism to the second clamp corresponding to the material transfer mechanism.

[0009] By adopting the above technical solution, the upper shell mechanism places the shell of the pin component to be assembled onto the corresponding first fixture. The first position-changing frame rotates to rotate the first fixture with the shell placed on it to the short pin feeding mechanism. The short pin feeding mechanism initially inserts the short pins, that is, the straight pins in the pin component, into the shell. The first position-changing frame continues to rotate to rotate the first fixture after the short pins are placed to the long pin feeding mechanism. The long pin feeding mechanism initially inserts the long pins, that is, the curved pins in the pin component, into the shell in a vertical form. The first position-changing frame continues to rotate to rotate the first fixture after the long pins are placed to the pin pressing mechanism. The pin pressing mechanism simultaneously presses the short and long pins to achieve press-fitting of the pins and the shell.

[0010] After the needle pressing is completed, the material transfer mechanism will horizontally transfer the pin piece that has completed the needle pressing in the first fixture corresponding to the needle pressing mechanism to the second fixture corresponding to the material transfer mechanism, and then the second position transfer frame will rotate the second fixture to correspond to the needle bending mechanism, and the needle bending mechanism will bend the vertical pin into the required curved pin; then the second position transfer frame will rotate the second fixture to the detection mechanism, and the detection mechanism will detect the straight pins and the bent pins to determine whether the vertical and horizontal sections of the straight pins and the bent pins are bent. Finally, the second position transfer frame will rotate the pin piece that has completed the detection to the unloading mechanism for unloading.

[0011] In the present invention, during the rotation of the first transposition frame, the shell-up mechanism, the short pin feeding mechanism, the long pin feeding mechanism, and the pin pressing mechanism operate simultaneously. During the rotation of the second transposition frame, the material transfer mechanism, the needle bending mechanism, the detection mechanism, and the material removal mechanism operate simultaneously. When the first transposition frame and the second transposition frame rotate one circle, the shell-up, short pin feeding, long pin feeding, pin pressing, material transfer, long pin bending, detection, and material removal of a pin component are completed. This reciprocating process realizes the automatic assembly of the pin component. During assembly, the bent pins in the pin component are first inserted and press-fitted as straight long pins. After complete press-fitting, they are bent by the needle bending mechanism to avoid bending and deformation of the bent pins during the pressing process. The straight pins and the bent pins are pressed synchronously, thereby improving the assembly efficiency of the pin component, ensuring the assembly quality of the pin component, and reducing the labor intensity.

[0012] Furthermore, each of the first clamp and the second clamp comprises a left clamping block and a right clamping block symmetrically arranged along the length direction of the corresponding first extension plate / second extension plate, the left clamping block and the right clamping block being L-shaped structures with their openings upward, and the openings thereof being located on the sides thereof close to each other, and the upper end of the housing of the pin member being higher than the upper ends of the left clamping block and the right clamping block;

[0013] The left clamping block and the right clamping block are mounted on the corresponding first extension plate / second extension plate in a horizontal relative sliding manner along a direction perpendicular to the corresponding first extension plate / second extension plate, and a limit block is provided between one end of the left clamping block and the right clamping block close to the corresponding first transposition frame / second transposition frame, the upper end of the limit block is not higher than the height of the left clamping block and the right clamping block, and the limit block is mounted on the corresponding first extension plate / second extension plate in a sliding manner along the length direction of the left clamping block;

[0014] The left clamping block or the right clamping block is provided with a flip block rotatably connected to the end away from the limit block, and the rotation axis of the flip block is set along the width direction of the corresponding first extension plate / second extension plate. When the flip block is rotated to a vertical upward state, its rotation axis is located at its lower end. When the flip block is rotated to a horizontal state, its upper end surface is flush with the lower end surface of the shell of the corresponding first clamp / second clamp internal pin part.

[0015] By adopting the above technical solution, the left clamp block, the right clamp block, the limit block and the flip block in the vertical state form a four-sided limited cavity for placing the shell of the pin part. The left clamp block and the right clamp block can slide against each other to adjust the distance between them, adapt to shells of different widths and ensure the stability of the shell placement. The limit block sliding along the corresponding first extension plate / second extension plate can not only slide to adjust the distance between it and the flip block to adapt to shells of different lengths, but also when unloading at the subsequent unloading mechanism, the pin part can be directly pushed out of the second clamp through the limit block, simplifying the structure of the unloading mechanism. The eccentrically rotating flip block can be rotated to a horizontal state, and the upper end of the shell of the pin part is higher than the upper ends of the left clamp block and the right clamp block, which facilitates the rapid horizontal transfer of the pin part in the first clamp of the pin pressing mechanism to the second clamp of the transfer mechanism, and facilitates rapid unloading at the unloading mechanism.

[0016] Furthermore, the short needle feeding mechanism includes a short needle feeding bracket and a short needle vibrating disk installed on the short needle feeding bracket, and the outlet of the short needle vibrating disk is connected to two short needle channels arranged in parallel, the width of the short needle channel is adapted to the width of the square plug block at the bottom of the straight pin in the pin piece, and the distance between the two short needle channels is adapted to the distance between the two rows of straight pins in the pin piece; the discharge ports of the two short needle channels are arranged along the length direction of the first extension plate corresponding to the short needle feeding mechanism, and the discharge ports of the two short needle channels are provided with a plurality of short needle partition rods along the length direction thereof, one end of the short needle partition rod is eccentrically rotatably installed on the short needle channel, and the rotation axis thereof is horizontally arranged along the length direction perpendicular to the discharge port of the short needle channel;

[0017] A short needle loading assembly is also provided at the discharge port of the two short needle channels, and the short needle loading assembly includes a short needle loading plate slidably installed on the short needle loading bracket along the length direction of the first extension plate corresponding to the short needle loading mechanism, and a short needle loading seat arranged along the sliding direction of the short needle loading plate is vertically slidably installed on the lower end of the short needle loading plate, and two groups of needle removal cylinders corresponding to the two short needle channels are provided on the lower end surface of the short needle loading seat along its width direction, and each group of needle removal cylinders is arranged in an array along the length direction of the short needle loading seat.

[0018] By adopting the above technical solution, the short needle vibration disk vibrates to arrange the short needles neatly on the two short needle channels, and the short needle partition rods at the short needle channel outlet are rotated to a horizontal state in turn to separate several short needles, so that the distance between the square plug blocks at the bottom of the short needles corresponds one to one with the square slots on the shell. The short needle loading assembly works, and the short needle loading seat drives several needle cylinders to slide vertically downward, so that the needle cylinders and several short needles correspond one to one, and the short needle loading seat moves vertically upward, and the needle cylinders are used to lift several short needles vertically upward and out of the short needle channels, completing the short needle loading. The short needle loading plate as a whole slides along the length direction of the first extension plate corresponding to it, and the short needle loading seat is moved to directly above the first clamp corresponding to the short needle loading mechanism. The short needle loading seat slides vertically downward, and the short needles in the needle cylinders are placed one by one into the square slots on the shell in the first clamp, completing the loading of the short needles.

[0019] Furthermore, the long needle feeding mechanism includes a long needle feeding bracket and a long needle vibrating disk installed on the long needle feeding bracket, and the outlet of the long needle vibrating disk is connected to two long needle channels arranged in parallel, the width of the long needle channel is adapted to the width of the square plug block at the bottom of the bent pin in the pin part, and the distance between the two long needle channels is adapted to the distance between the two rows of bent pins in the pin part; the discharge ports of the two long needle channels are arranged along the length direction of the first extension plate corresponding to the long needle feeding mechanism, and the discharge ports of the two long needle channels are provided with a plurality of long needle partition rods along the length direction thereof, one end of the long needle partition rod is eccentrically rotatably installed on the long needle channel, and the rotation axis thereof is horizontally arranged along the length direction perpendicular to the discharge port of the long needle channel;

[0020] A long needle loading assembly is also provided at the discharge port of the two long needle channels, and the long needle loading assembly includes a long needle loading plate slidably installed on the long needle loading bracket along the length direction of the first extension plate corresponding to the long needle loading mechanism, and a long needle loading seat arranged along the sliding direction of the long needle loading plate is vertically slidably installed at the lower end of the long needle loading plate, and two groups of needle removal cylinders corresponding to the two long needle channels are provided on the lower end surface of the long needle loading seat along its width direction, and each group of needle removal cylinders is arranged in an array along the length direction of the long needle loading seat.

[0021] By adopting the above technical solution, the long needle vibrating disk vibrates to arrange the long needles neatly on the two long needle channels, and the long needle partition rods at the long needle channel outlet are rotated to a horizontal state in sequence to separate the several long needles, so that the distance between the square plug blocks at the bottom of the long needles corresponds one to one with the square slots on the shell. The long needle loading assembly works, and the long needle loading seat drives the several needle cylinders to slide vertically downward, so that the needle cylinders and the several long needles correspond one to one. The long needle loading seat moves vertically upward, and the needle cylinders are used to lift the several long needles vertically upward and out of the long needle channels, completing the long needle loading. The long needle loading plate as a whole slides along the length direction of the corresponding first extension plate, and the long needle loading seat is moved to the top of the first clamp corresponding to the long needle loading mechanism. The long needle loading seat slides vertically downward, and the long needles in the needle cylinders are placed one by one into the square slots on the shell in the first clamp, completing the long needle loading.

[0022] Furthermore, the needle removal cylinder is provided with two needle removal clamps symmetrically arranged about the vertical plane where the axis thereof is located, and a plurality of elastic protrusions are provided in a rectangular array on the side where the two needle removal clamps are close to each other; the two needle removal clamps are slidably installed in the needle removal cylinder along the radial direction of the needle removal cylinder, and a guide block is provided along the sliding direction of the two needle removal clamps on the side away from each other, and the inner wall of the needle removal cylinder is provided with a guide groove arranged along the sliding direction of the needle removal clamp, and the guide block is slidably installed in the corresponding guide groove;

[0023] A needle removal spring is connected between the bottom of the guide groove and the end of the guide block away from the needle removal clamp, and the bottom of the guide groove and the end of the guide block away from the needle removal clamp are respectively provided with electromagnetic suction blocks that cooperate with each other; in normal state, the electromagnetic suction block is energized and adsorbed, and the two needle removal clamps are away from each other. When the needle is removed, the electromagnetic suction block is powered off, and under the action of the needle removal spring, the two needle removal clamps slide close to each other and the end of the guide block away from the needle removal clamp is always located in the guide groove.

[0024] By adopting the above technical solution, when the needle barrel moves vertically downward to remove the needle, the electromagnetic suction block is energized to adsorb, and the two needle clips move away from each other. When the corresponding short needle / long needle enters the needle barrel to remove the needle, the electromagnetic suction block is de-energized, and under the action of the needle spring, the two needle clips slide towards each other, and the two needle clips clamp the short needle / long needle to achieve needle removal. When the needle barrel moves to the top of the corresponding first clamp and moves vertically downward to place the needle, after the square plug-in block below the short needle / long needle is placed in the corresponding square slot on the shell, the electromagnetic suction block is energized to adsorb, and the two needle clips move away from each other to release the support and fixation of the short needle / long needle. After the needle barrel is reset upward, it can be detached from the short needle / long needle, completing the needle placement.

[0025] Furthermore, the needle pressing mechanism includes a vertically arranged needle pressing frame, a needle pressing plate is provided on the needle pressing frame, and the needle pressing plate is slidably installed on the needle pressing frame along a horizontal direction perpendicular to the length direction of the first extension plate corresponding to the needle pressing mechanism, and the needle pressing plate can slide to the top of the first clamp corresponding to the needle pressing mechanism; a needle pressing seat is vertically slidably installed on the lower end surface of the needle pressing plate, and a plurality of needle pressing cylinders are provided in a rectangular array on the lower end surface of the needle pressing seat, and the bottom cross sections of the plurality of needle pressing cylinders correspond one to one with a plurality of square plug blocks on the pin plug in the first clamp corresponding to the needle pressing mechanism, and a needle hole coaxial with the needle pressing cylinder is provided in the needle pressing cylinder.

[0026] By adopting the above technical solution, after the first clamp for placing the long needle is rotated to the corresponding needle pressing mechanism, the needle pressing plate as a whole slides in a direction perpendicular to the corresponding first extension plate until the needle pressing seat moves to just above the corresponding first clamp, and the needle pressing seat drives several needle pressing cylinders to slide vertically downward, and the short needle / long needle enters the needle hole in the corresponding needle pressing cylinder, and the lower end of the needle pressing cylinder abuts against the square plug at the bottom of the short needle / long needle. As the needle pressing seat continues to move downward, the square plug is pressed vertically downward, so that the elastic ring on the outer periphery of the square plug is stuck in the card groove in the square slot, thereby realizing press-fitting of the short needle / long needle. After the press-fitting is completed, the needle pressing seat and the needle pressing plate can be reset one by one.

[0027] Furthermore, the material transfer mechanism includes a material transfer rack, which is provided with a material transfer plate arranged horizontally and perpendicularly to the length direction of the second extension plate corresponding to the material transfer mechanism, and the end of the material transfer plate close to the material transfer rack is slidably installed on the material transfer rack along the length direction of the corresponding second extension plate; the end of the material transfer plate away from the material transfer rack is provided with a material transfer rod located above the first clamp corresponding to the needle pressing mechanism and corresponding to the shell of the pin part in the first clamp, and the material transfer rod is slidably installed on the material transfer plate along the length direction of the transfer plate.

[0028] By adopting the above technical solution, after the needle pressing mechanism completes the needle pressing, the transfer plate slides along the length direction of the corresponding second extension plate in coordination with the transfer lever sliding along the length direction of the transfer plate, moving the transfer lever to the side of the first fixture corresponding to the needle pressing mechanism close to the corresponding first extension plate, and the transfer lever cooperates with the pin component housing in the first fixture. The flip block in the first fixture corresponding to the needle pressing mechanism and the second fixture corresponding to the transfer mechanism are both rotated to a horizontal state, and the transfer plate drives the transfer lever to move as a whole toward the second position change frame, horizontally shifting the pin component in the first fixture into the second fixture, completing the pin component transfer. After the pin component is transferred, the flip block, transfer plate, and transfer lever are reset.

[0029] Furthermore, the needle bending mechanism includes a needle bending frame, the needle bending frame is provided with a needle bending seat which slides along the length direction of the second extension plate corresponding to the needle bending mechanism, and a needle bending plate is vertically slidably installed on the needle bending seat, and two groups of needle bending assemblies are symmetrically provided on the needle bending plate, and the two groups of needle bending assemblies are relatively slidably installed on the needle bending plate along the sliding direction perpendicular to the needle bending seat; the needle bending assembly includes a needle bending block which is slidably installed on the needle bending plate along the sliding direction perpendicular to the needle bending seat, and an adjustment plate with an axis arranged along the sliding direction of the needle bending seat is positioned and rotatably installed on the needle bending block, and two needle bending shafts are symmetrically provided on the adjustment plate, and the two needle bending shafts are parallel to the rotation axis of the adjustment plate, and the two needle bending shafts are slidably installed on the adjustment plate along the length direction of the adjustment plate, and the rotation axis of the adjustment plate is located on the symmetry plane of the two needle bending shafts.

[0030] By adopting the above technical solution, when the second position-changing frame drives the second clamp to rotate to correspond to the bending needle mechanism, the bending needle seat as a whole slides along the length direction of the corresponding second extension plate, so that the two rows of long needles respectively enter between the two bending needle shafts in the two groups of bending needle assemblies. The adjustment plates in the two groups of bending needle assemblies are positioned and rotated, and the two bending needle shafts on the adjustment plate bend the long needles into bent pins, thereby realizing the bending operation of the long needles. Among them, the bending needle plate is vertically slidably installed on the bending needle seat, and the height of the bending point of the long needle can be adjusted by adjusting the height of the bending needle plate. The two bending needle assemblies are horizontally slidably installed on the bending needle plate along a direction perpendicular to the sliding direction of the bending needle seat through the bending needle block, and the two bending needle shafts are slidably installed on the adjustment plate along the length direction of the adjustment plate. The position of the two bending needle assemblies and the distance between the two bending needle shafts can be adjusted according to the distance between the two rows of long needles, the thickness of the long needles, etc., to meet the bending processing of long needles of different specifications and improve the scope of application.

[0031] Furthermore, the detection mechanism includes a vertically arranged detection frame, the detection frame is provided with a detection seat that slides along the length direction of the second extension plate corresponding to the detection mechanism, the lower end surface of the detection seat is vertically slidably installed with a horizontally arranged horizontal detection plate, and the lower end surface of the horizontal detection plate is provided with a horizontally arranged first detection sensor; the lower end surface of the detection seat is also provided with vertical detection plates located on both sides of the horizontal detection plate, the two vertical detection plates are installed on the detection seat in a relative horizontal sliding direction perpendicular to the sliding direction of the detection seat, and a vertically arranged second detection sensor is provided on the side where the two vertical detection plates are close to each other.

[0032] By adopting this technical solution, when the second transposition frame drives the second fixture of the bent pin to rotate to the detection mechanism, the detection seat as a whole slides along the length of the corresponding second extension plate to directly above the corresponding second fixture. The horizontal detection plate slides vertically downward, abutting the end of the short pin, or straight pin. The first detection sensor detects whether the top ends of several straight pins are at the same height to determine whether the straight pins are bent. Simultaneously, the vertical detection plates slide closer together and abut the side ends of the bent pins, or the upper ends of the original long pins. The second detection sensor detects whether the side ends of several bent pins are at the same height and distance to determine whether the bent pins are bent. This achieves simultaneous detection of straight and bent pins, assessing the assembly quality of the pin assembly and effectively improving detection efficiency.

[0033] 18. The camshaft assembly of claim 17, wherein the plurality of parallel rods are connected to a plurality of opposite ends of the camshaft, wherein the plurality of parallel rods are connected to a plurality of opposite ends of the camshaft. The plurality of parallel rods are connected to a plurality of opposite ends of the camshaft.

[0034] By adopting the above technical solution, the cooperation between the square plug block and the direction slot facilitates the stability of both the straight and curved pins when they are loaded as short and long pins in a vertical state, and avoids the short and long pins from shaking and shifting during the rotation of the first position change frame, which affects the subsequent pin pressing. In addition, during the pin pressing process, the square plug block can be squeezed to achieve press-fitting, avoiding direct squeezing of the short and long pins, which may cause them to bend and deform. The elastic ring and the card slot cooperate to fix the square plug block in the direction slot, ensuring the stability of the installation of the straight and curved pins. The elastic ring is close to the upper end of the square plug block, ensuring that when both the straight and curved pins are loaded as short and long pins in a vertical state, the lower end of the square plug block has enough depth to be placed in the corresponding square slot, ensuring their stability. Among them, the pin assembly includes two rows of straight pins and two rows of curved pins, and the upper ends of the straight pins are higher than the upper ends of the curved pins, which increases the connection points of the pin assembly and facilitates its connection, meeting its usage requirements. The two rows of curved pins bend in opposite directions, preventing interference between their ends and facilitating bending during assembly. The curved pins of the present invention are assembled using an assembly device that first loads and presses the long, straight pins before bending them into a curved state. This effectively prevents bending and deformation of the pins during the pressing process, ensuring assembly quality.

[0035] In summary, the present invention has the following beneficial effects:

[0036] 1. The present invention provides a first positioning and rotating frame, a plurality of first clamps, and an upper shell mechanism, a short needle loading mechanism, a long needle loading mechanism and a pressing needle mechanism that are matched with the first clamps in a one-to-one manner and are sequentially arranged; a second positioning and rotating frame, a plurality of second clamps, and a transfer mechanism, a bending needle mechanism, a detection mechanism and a blanking mechanism that are matched with the second clamps in a one-to-one manner and are sequentially arranged; the pressing needle mechanism and the transfer mechanism are close to each other; during the rotation of the first positioning frame, the upper shell mechanism, the short needle loading mechanism, the long needle loading mechanism and the pressing needle mechanism work simultaneously; during the rotation of the second positioning frame, the transfer mechanism, the bending needle mechanism, the detection mechanism and the blanking mechanism work simultaneously; when the first positioning frame and the second positioning frame rotate one circle, the upper shell, short needle loading, long needle loading, pressing needle, transfer, long needle bending, detection and blanking of a pin part are completed, and this reciprocating process is repeated to realize automatic assembly of the pin parts, improve the assembly efficiency of the pin parts, ensure the assembly quality of the pin parts, and reduce the labor intensity.

[0037] 2. During assembly, the bent pins in the pin assembly of the present invention are first inserted and press-fitted as straight long pins. After complete press-fitting, they are bent by the pin bending mechanism to avoid bending and deformation of the bent pins during the pin pressing process, thereby achieving synchronous pin pressing of the straight pins and the bent pins.

[0038] 3. The pin assembly of the present invention includes a shell, two rows of straight pins and two rows of bent pins, which increase the connection points of the pin assembly to meet its usage requirements. The bending directions of the two rows of bent pins are opposite to avoid interference between their ends when close together, and facilitate the bending operation during assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural diagram of a pin component for automobiles;

[0040] Figure 2 The figure is a schematic diagram of the overall structure of an assembly device for automotive pin parts;

[0041] Figure 3 This is a schematic diagram of the structure of the upper shell mechanism in an assembly device for automotive pin components;

[0042] Figure 4 This is a schematic diagram of the structure of a short pin feeding mechanism in an assembly device for automotive pin parts;

[0043] Figure 5 This is a schematic diagram of the structure of a long pin feeding mechanism in an assembly device for automotive pin parts;

[0044] Figure 6 This is a structural diagram of a pin pressing mechanism and a material transfer mechanism in an assembly device for automotive pin components;

[0045] Figure 7 This is a schematic diagram of the structure of a needle bending mechanism in an assembly device for automotive pin parts;

[0046] Figure 8 The present invention is a schematic diagram of the structure of a detection mechanism in an assembly device for automotive pin components;

[0047] Figure 9 The present invention is a structural diagram of a blanking mechanism in an assembly device for automotive pin parts.

[0048] In the figure, 1. housing; 2. straight pin; 3. bent pin; 4. square plug block; 5. square slot; 6. elastic ring; 7. card slot; 8. first transposition frame; 9. first extension plate; 10. first clamp; 11. left clamp block; 12. right clamp block; 13. limit block; 14. flip block; 15. upper shell mechanism; 16. upper shell bracket; 17. upper shell vibration plate; 18. upper shell channel; 19. upper shell clamping claw; 20. short needle feeding mechanism; 21 , short needle feeding bracket; 22, short needle vibration disk; 23, short needle channel; 24, short needle partition rod; 25, short needle feeding assembly; 26, short needle feeding plate; 27, short needle feeding seat; 28, needle cylinder; 29, needle clip; 30, elastic protrusion; 31, guide block; 32, guide groove; 33, needle spring; 34, electromagnetic suction block; 35, long needle feeding mechanism; 36, long needle feeding bracket; 37, long needle vibration disk; 38, long needle channel; 3 9. Long needle partition rod; 40. Long needle feeding assembly; 41. Long needle feeding plate; 42. Long needle feeding seat; 43. Needle pressing mechanism; 44. Needle pressing frame; 45. Needle pressing plate; 46. Needle pressing seat; 47. Needle pressing cylinder; 48. Needle hole; 49. Second shifting frame; 50. Second extension plate; 51. Second clamp; 52. Material transfer mechanism; 53. Material transfer frame; 54. Material transfer plate; 55. Material transfer lever; 56. Needle bending mechanism; 57. Needle bending frame; 58. Bender seat; 59. Bender plate; 60. Bender assembly; 61. Bender block; 62. Positioning plate; 63. Bender shaft; 64. Detection mechanism; 65. Detection frame; 66. Detection seat; 67. Horizontal detection plate; 68. First detection sensor; 69. Vertical detection plate; 70. Second detection sensor; 71. Unloading mechanism; 72. Unloading frame; 73. Unloading seat; 74. Unloading guide groove; 75. Finished product basket; 76. Waste basket; 77. Controller. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] A pin component for automobiles is assembled by the following assembly equipment, such as Figure 1 As shown, the housing 1 comprises a housing 1 with two rows of straight pins 2 arranged along its width on its upper end surface. Each row of straight pins 2 is arrayed along the length of the housing 1. Curved pins 3 are also arranged on the upper end surface of the housing 1, located on the side away from the two rows of straight pins 2. Each row of curved pins 3 is also arrayed along the length of the housing 1 and corresponds one-to-one with the straight pins 2 on that side. The curved pins 3 are L-shaped with their opening downward, with a circular arc transition at the bend, and the two rows of curved pins 3 bend in opposite directions.

[0051] Among them, such as Figure 1As shown, the upper ends of the straight pins 2 are higher than the upper ends of the curved pins 3, and the end surfaces of the straight pins 2 and the curved pins 3 facing away from the housing 1 are both rounded. This increases the number of connection points for the pin assembly while facilitating external connection of the ends of the straight pins 2 and the curved pins 3, meeting their intended use. The two rows of curved pins 3 bend in opposite directions, preventing interference between their ends and facilitating bending during assembly.

[0052] like Figure 1 As shown, in order to facilitate the assembly of the straight pins 2 and the curved pins, square plug blocks 4 are provided at the bottom of several straight pins 2 and curved pins 3, and a plurality of square slots 5 corresponding to the square plug blocks 4 are provided in a rectangular array on the upper end surface of the housing 1. An elastic ring 6 is provided around the outer periphery of the square plug block 4 near the top thereof, and a slot 7 is provided inside the square plug block 4 to cooperate with the elastic ring 6.

[0053] like Figure 1 As shown, the square insert 4 cooperates with the square slot 5, and the elastic ring 6 cooperates with the slot 7 to achieve detachable fixed installation of the straight pin 2 and the curved pin 3. Specifically, the cooperation between the square insert 4 and the directional slot, and the elastic ring 6 near the top of the square insert 4, ensures that when the straight pin 2 and the curved pin 3 are loaded as short or long pins in a vertical position, the lower end of the square insert 4 is sufficiently deep within the square slot 5, thereby ensuring the stability of the loading and placement. During the pin pressing process, the elastic ring 6 can be quickly pressed into the slot 7 by squeezing the square insert 4, avoiding direct squeezing of the short or long pins, which may cause them to bend and deform, thereby reducing the difficulty of press-fitting.

[0054] An assembly device for automobile pin parts, used to assemble the above-mentioned automobile pin parts, such as Figure 2 As shown, it specifically includes a first indexing frame 8 that is vertically arranged and positioned and rotated about a vertical axis. Four first extension plates 9 are arranged horizontally and perpendicular to the first indexing frame 8 in a circular array on the upper end of the first indexing frame 8. A first clamp 10 is provided at the end of each first extension plate 9 away from the first indexing frame 8. An upper shell mechanism 15, a short needle feeding mechanism 20, a long needle feeding mechanism 35, and a needle pressing mechanism 43 are arranged in a circular array around the first indexing frame 8. The upper shell mechanism 15, the short needle feeding mechanism 20, the long needle feeding mechanism 35, and the needle pressing mechanism 43 are arranged in sequence and correspond one-to-one to the four first clamps 10.

[0055] like Figure 2As shown, the second indexing frame 49 is further provided on the side of the first indexing frame 8 near the needle pressing mechanism 43 and is positioned and rotated about a vertical axis. Four second extension plates 50 arranged perpendicularly and horizontally are arranged in a circular array on the upper end of the second indexing frame 49. A second clamp 51 is provided on the end of the second extension plate 50 away from the second indexing frame 49. A material transfer mechanism 52, a needle bending mechanism 56, a detection mechanism 64, and a material discharge mechanism 71 are arranged in a circular array around the second indexing frame 49. The material transfer mechanism 52, the needle bending mechanism 56, the detection mechanism 64, and the material discharge mechanism 71 are arranged in sequence and correspond one to one to the four second clamps 51.

[0056] Among them, such as Figure 2 As shown, the needle pressing mechanism 43 and the material transfer mechanism 52 are respectively located on both sides of the first extension plate 9 at this position. The first clamp 10 corresponding to the needle pressing mechanism 43 and the second clamp 51 corresponding to the material transfer mechanism 52 are located at the same height. The material transfer mechanism 52 horizontally transfers the pin parts that have completed the needle pressing in the first clamp 10 corresponding to the needle pressing mechanism 43 to the second clamp 51 corresponding to the material transfer mechanism 52. In addition, a controller 77 is also provided on one side of the first reversing frame or the second reversing frame. The controller 77 controls the automated operation and linkage of various mechanisms in the device by adopting automatic control technology such as PLC. Automatic control technology such as PLC is existing technology and will not be described in detail.

[0057] like Figure 2 As shown, when the present invention is working, the upper shell mechanism 15 places the housing 1 of the pin assembly to be assembled onto the corresponding first fixture 10. The first position-changing frame 8 rotates to rotate the first fixture 10 with the housing 1 placed thereon to the short pin loading mechanism 20. The short pin loading mechanism 20 initially inserts the short pin, i.e., the straight pin 2 in the pin assembly, into the housing 1. The first position-changing frame 8 continues to rotate to rotate the first fixture 10, after which the short pin is placed, to the long pin loading mechanism 35. The long pin loading mechanism 35 initially inserts the long pin, i.e., the curved pin 3 in the pin assembly, into the housing 1 in a vertical form. The first position-changing frame 8 continues to rotate to rotate the first fixture 10, after which the long pin is placed, to the pin pressing mechanism 43. The pin pressing mechanism 43 synchronously presses the short and long pins to achieve press-fitting of the pins into the housing 1.

[0058] like Figure 2As shown, after the pin pressing is completed, the transfer mechanism 52 horizontally transfers the pin piece that has completed the pin pressing in the first fixture 10 corresponding to the pin pressing mechanism 43 to the second fixture 51 corresponding to the transfer mechanism 52, and then the second position transfer frame 49 rotates to rotate the second fixture 51 to correspond to the needle bending mechanism 56, and the needle bending mechanism 56 bends the vertical pin into the required curved pin 3; then the second position transfer frame 49 rotates to rotate the second fixture 51 to the detection mechanism 64, and the detection mechanism 64 detects the straight pin 2 and the curved pin 3 to determine whether the vertical and horizontal sections of the straight pin 2 and the curved pin 3 are bent. Finally, the second position transfer frame 49 rotates to rotate the pin piece that has completed the detection to the unloading mechanism 71 for unloading.

[0059] like Figure 2 As shown, in the present invention, during the rotation of the first position change frame 8, the upper shell mechanism 15, the short needle loading mechanism 20, the long needle loading mechanism 35 and the needle pressing mechanism 43 work simultaneously, and during the rotation of the second position change frame 49, the material transfer mechanism 52, the needle bending mechanism 56, the detection mechanism 64 and the material removal mechanism 71 work simultaneously. When the first position change frame 8 and the second position change frame 49 rotate one circle, the upper shell, short needle loading, long needle loading, needle pressing, material transfer, long needle bending, detection and material removal of a pin part are completed.

[0060] like Figure 2 As shown, the process is repeated in this way to realize the automatic assembly of the pin parts, and during assembly, the bent pin 3 in the pin part is first inserted and pressed in the form of a straight long pin, and then bent by the needle bending mechanism 56 after complete pressing, to avoid bending and deformation of the bent pin 3 during the pressing process, to meet the synchronous pressing of the straight pin 2 and the bent pin 3, to improve the assembly efficiency of the pin part, to ensure the assembly quality of the pin part, and to reduce the labor intensity.

[0061] like Figure 2 As shown, the specific structures of the first clamp 10, the second clamp 51, the upper shell mechanism 15, the short needle feeding mechanism 20, the long needle feeding mechanism 35, the needle pressing mechanism 43, the material transfer mechanism 52, the needle bending mechanism 56, the detection mechanism 64 and the material discharge mechanism 71 are described in detail below. Among them, unless otherwise specified, the following uses a motor to achieve rotation drive, a telescopic cylinder to achieve horizontal telescoping, and a lifting cylinder to achieve vertical lifting. Excessive description is not given in this article, and only a simple diagram is shown in the accompanying drawings. The three vibration disks used in this embodiment are the same as those in the prior art, and are also only briefly shown in the figure.

[0062] like Figure 2 and Figure 3As shown, the first clamp 10 and the second clamp 51 both include a left clamp block 11 and a right clamp block 12 symmetrically arranged along the length direction of the corresponding first extension plate 9 / second extension plate 50, the left clamp block 11 and the right clamp block 12 are L-shaped structures with the openings upward and the openings are located on the side close to each other, the upper end of the shell 1 of the pin member is higher than the upper ends of the left clamp block 11 and the right clamp block 12, and the left clamp block 11 and the right clamp block 12 are installed on the corresponding first extension plate 9 / second extension plate 50 in a horizontal relative sliding manner perpendicular to the direction of the corresponding first extension plate 9 / second extension plate 50.

[0063] like Figure 2 and Figure 3 As shown, a limit block 13 is provided between the ends of the left clamping block 11 and the right clamping block 12 near the corresponding first transposition frame 8 / second transposition frame 49. The upper end of the limit block 13 is no higher than the height of the left clamping block 11 and the right clamping block 12, and the limit block 13 is slidably mounted on the corresponding first extension plate 9 / second extension plate 50 along the length direction of the left clamping block 11. In addition, a flip block 14 is provided at the end of the left clamping block 11 or the right clamping block 12 away from the limit block 13, which is rotatably connected thereto. The rotation axis of the flip block 14 is arranged along the width direction of the corresponding first extension plate 9 / second extension plate 50. When the flip block 14 is rotated to a vertical upward state, its rotation axis is located at its lower end. When the flip block 14 is rotated to a horizontal state, its upper end surface is flush with the lower end surface of the housing 1 of the pin assembly in the corresponding first clamp 10 / second clamp 51.

[0064] like Figure 3 As shown, the left clamping block 11, the right clamping block 12, the limiting block 13 and the flip block 14 in the vertical state form a cavity with four sides for placing the housing 1 of the pin component. The left clamping block 11 and the right clamping block 12 can slide relative to each other to adjust the distance between them, adapt to housings 1 of different widths and ensure the stability of the housing 1. Figure 2 and Figure 3 As shown, the limit block 13, which slides along the corresponding first extension plate 9 / second extension plate 50, not only allows the distance between it and the flip block 14 to be adjusted to accommodate housings 1 of different lengths, but also allows the pin components to be directly pushed out of the second clamp 51 via the limit block 13 during subsequent unloading at the unloading mechanism 71, simplifying the structure of the unloading mechanism 71. The eccentrically rotating flip block 14 can be rotated to a horizontal position, and the upper end of the housing 1 of the pin component is higher than the upper ends of the left clamp block 11 and the right clamp block 12, facilitating the rapid horizontal transfer of the pin components from the first clamp 10 at the pin pressing mechanism 43 to the second clamp 51 at the transfer mechanism 52, and facilitating rapid unloading at the unloading mechanism 71.

[0065] like Figure 2 and Figure 3As shown, the upper shell mechanism 15 includes an upper shell bracket 16 and an upper shell vibration disk 17 mounted on the upper shell bracket 16. The outlet of the upper shell vibration disk 17 is connected to the upper shell channel 18. The width of the upper shell channel 18 is adapted to the width of the housing 1 of the pin member. The upper shell bracket 16 is also provided with an upper shell clamp 19 located on the outlet side of the upper shell channel 18. The upper shell clamp 19 is slidably mounted on the upper shell bracket 16 along the length direction of the first extension plate 9 corresponding to the upper shell mechanism 15 and cooperates with the first clamp 10 corresponding to the upper shell mechanism 15. The upper shell vibration disk 17 vibrates to neatly place the housing 1 of the pin member on the upper shell channel 18. The upper shell clamp 19 on the outlet side of the upper shell channel 18 slides along the length direction of the corresponding first extension plate 9 to grab the housing 1 in the upper shell channel 18 and transfer it to the first clamp 10 corresponding to the upper shell mechanism 15, thereby realizing automatic loading of the housing 1. Among them, the upper shell clamp 19 is a pneumatic clamp, and its structure and working principle are the same as those in the prior art. It can grasp and lift the grasped object, and is only briefly illustrated in the figure.

[0066] like Figure 2 and Figure 4 As shown, the short needle feeding mechanism 20 includes a short needle feeding bracket 21 and a short needle vibrating disk 22 installed on the short needle feeding bracket 21, and two short needle channels 23 arranged in parallel are connected to the outlet of the short needle vibrating disk 22. The width of the short needle channel 23 is adapted to the width of the square plug block 4 at the bottom of the straight pin 2 in the pin piece, and the distance between the two short needle channels 23 is adapted to the distance between the two rows of straight pins 2 in the pin piece; the discharge ports of the two short needle channels 23 are arranged along the length direction of the first extension plate 9 corresponding to the short needle feeding mechanism 20, and a number of short needle partition rods 24 are provided on both sides of the discharge ports of the two short needle channels 23 along their length direction. One end of the short needle partition rod 24 is eccentrically mounted on the short needle channel 23, and its rotation axis is horizontally arranged along the length direction perpendicular to the discharge port of the short needle channel 23.

[0067] like Figure 4 As shown, a short needle loading assembly 25 is also provided at the discharge port of the two short needle channels 23. The short needle loading assembly 25 includes a short needle loading plate 26 slidably installed on the short needle loading bracket 21 along the length direction of the first extension plate 9 corresponding to the short needle loading mechanism 20. The lower end of the short needle loading plate 26 is vertically slidably installed with a short needle loading seat 27 arranged along the sliding direction of the short needle loading plate 26. The lower end surface of the short needle loading seat 27 is provided with two groups of needle cylinders 28 corresponding to the two short needle channels 23 along its width direction, and each group of needle cylinders 28 is provided with several arrays along the length direction of the short needle loading seat 27.

[0068] like Figure 4As shown, the short needle vibrating disk 22 vibrates to neatly arrange the short needles on the two short needle channels 23. The short needle partition rods 24 at the outlet of the short needle channels 23 are rotated to a horizontal position to separate the short needles, so that the square plug blocks 4 at the bottom of the short needles correspond one-to-one with the square slots 5 on the housing 1. The short needle loading assembly 25 is in operation, and the short needle loading seat 27 drives the several needle removal cylinders 28 to slide vertically downward, so that the needle removal cylinders 28 and the several short needles correspond one-to-one. The short needle loading seat 27 moves vertically upward, and the several short needles are lifted vertically upward and out of the short needle channels 23 by the needle removal cylinders 28, completing the short needle removal. The short needle loading plate 26 slides as a whole along the length direction of the corresponding first extension plate 9, and the short needle loading seat 27 is moved to be directly above the first clamp 10 corresponding to the short needle loading mechanism 20. The short needle loading seat 27 slides vertically downward, and the short needles in the syringe 28 are placed one by one into the square slots 5 on the shell 1 in the first clamp 10 to complete the loading of the short needles.

[0069] like Figure 2 and Figure 5 As shown, the structures and working principles of the long needle feeding mechanism 35 and the short needle feeding mechanism 20 are basically similar, specifically including a long needle feeding bracket 36 and a long needle vibrating disk 37 installed on the long needle feeding bracket 36, and the outlet of the long needle vibrating disk 37 is connected to two long needle channels 38 arranged in parallel, the width of the long needle channel 38 is adapted to the width of the square plug block 4 at the bottom of the bent pin 3 in the pin part, and the distance between the two long needle channels 38 is adapted to the distance between the two rows of bent pins 3 in the pin part; the discharge ports of the two long needle channels 38 are arranged along the length direction of the first extension plate 9 corresponding to the long needle feeding mechanism 35, and the discharge ports of the two long needle channels 38 are provided with a plurality of long needle partition rods 39 along the length direction thereof, and one end of the long needle partition rod 39 is eccentrically mounted on the long needle channel 38, and its rotation axis is horizontally arranged along the length direction perpendicular to the discharge port of the long needle channel 38.

[0070] like Figure 5 As shown, a long needle loading assembly 40 is also provided at the discharge port of the two long needle channels 38. The long needle loading assembly 40 includes a long needle loading plate 41 that is slidably installed on the long needle loading bracket 36 along the length direction of the first extension plate 9 corresponding to the long needle loading mechanism 35. The lower end of the long needle loading plate 41 is vertically slidably installed with a long needle loading seat 42 that is arranged along the sliding direction of the long needle loading plate 41. The lower end surface of the long needle loading seat 42 is provided with two groups of needle cylinders 28 corresponding to the two long needle channels 38 along its width direction, and each group of needle cylinders 28 is provided with several arrays along the length direction of the long needle loading seat 42.

[0071] Likewise, if Figure 5As shown, the long needle vibrating disk 37 vibrates, neatly arranging the long needles on the two long needle channels 38. The long needle partition rods 39 at the outlet of the long needle channels 38 are rotated to a horizontal position to separate the several long needles, so that the square plug blocks 4 at the bottom of the long needles correspond one-to-one with the square slots 5 on the housing 1. The long needle loading assembly 40 is activated, and the long needle loading seat 42 drives the several needle removal cylinders 28 to slide vertically downward, so that the needle removal cylinders 28 and the several long needles correspond one-to-one. The long needle loading seat 42 moves vertically upward, and the needle removal cylinders 28 are used to lift the several long needles vertically upward and out of the long needle channels 38, completing the long needle removal. The long needle loading plate 41 slides as a whole along the length direction of the first extension plate 9 corresponding to it, and the long needle loading seat 42 is moved to be directly above the first clamp 10 corresponding to the long needle loading mechanism 35. The long needle loading seat 42 slides vertically downward, and the long needles in the syringe 28 are placed one by one into the square slot 5 on the shell 1 in the first clamp 10 to complete the loading of the long needle.

[0072] like Figure 4 and Figure 5 As shown, in this embodiment, the needle-taking cylinder 28 in the short needle loading assembly 25 and the needle-taking cylinder 28 in the long needle loading assembly 40 have the same structure. Specifically, two needle-taking clips 29 are symmetrically arranged about the vertical plane where the axis thereof is located, and a plurality of elastic protrusions 30 are provided in a rectangular array on the side where the two needle-taking clips 29 are close to each other; the two needle-taking clips 29 are radially slidably installed in the needle-taking cylinder 28, and a guide block 31 is provided along the sliding direction of the two needle-taking clips 29 on the side away from each other. The inner wall of the needle-taking cylinder 28 is provided with a guide groove 32 arranged along the sliding direction of the needle-taking clip 29, and the guide block 31 is slidably installed in the corresponding guide groove 32. A needle-taking spring 33 is connected between the bottom of the guide groove 32 and the end of the guide block 31 away from the needle-taking clip 29. The bottom of the guide groove 32 and the end of the guide block 31 away from the needle-taking clip 29 are also respectively provided with mutually cooperating electromagnetic suction blocks 34. In normal state, the electromagnetic suction block 34 is energized for adsorption, and the two needle removal clips 29 move away from each other. When the needle is removed, the electromagnetic suction block 34 is de-energized, and under the action of the needle removal spring 33, the two needle removal clips 29 slide closer to each other and the end of the guide block 31 away from the needle removal clip 29 is always located in the guide groove 32.

[0073] like Figure 4 and Figure 5As shown, when the needle-taking cylinder 28 moves vertically downward to take out the needle, the electromagnetic suction block 34 is energized to attract, and the two needle-taking clips 29 move away from each other. When the corresponding short needle / long needle enters the needle-taking cylinder 28 to take out the needle, the electromagnetic suction block 34 is de-energized, and under the action of the needle-taking spring 33, the two needle-taking clips 29 slide close to each other, and the two needle-taking clips 29 clamp and fix the short needle / long needle to achieve needle removal. When the needle-taking cylinder 28 moves vertically downward to the corresponding first clamp 10 to place the needle, after the square plug 4 below the short needle / long needle is placed in the corresponding square slot 5 on the housing 1, the electromagnetic suction block 34 is energized to attract, and the two needle-taking clips 29 move away from each other to release the support and fixation of the short needle / long needle. After the needle-taking cylinder 28 is reset upward, it can be detached from the short needle / long needle, completing the needle placement.

[0074] like Figure 2 and Figure 6 As shown, the needle pressing mechanism 43 includes a vertically arranged needle pressing frame 44, on which a needle pressing plate 45 is provided. The needle pressing plate 45 is slidably mounted on the needle pressing frame 44 in a horizontal direction perpendicular to the length direction of the first extension plate 9 corresponding to the needle pressing mechanism 43, and the needle pressing plate 45 can slide to just above the first clamp 10 corresponding to the needle pressing mechanism 43. A needle pressing seat 46 is vertically slidably mounted on the lower end surface of the needle pressing plate 45, and a plurality of needle pressing cylinders 47 are provided in a rectangular array on the lower end surface of the needle pressing seat 46. The bottom cross-sections of the plurality of needle pressing cylinders 47 correspond one-to-one with the plurality of square plugs 4 on the pin inserting member in the first clamp 10 corresponding to the needle pressing mechanism 43, and a needle hole 48 coaxial with the needle pressing cylinder 47 is provided in the needle pressing cylinder 47.

[0075] like Figure 2 and Figure 6 As shown, after the first fixture 10 for placing the long needle is rotated to the corresponding needle pressing mechanism 43, the needle pressing plate 45 slides as a whole in a direction perpendicular to the corresponding first extension plate 9 until the needle pressing seat 46 moves to just above the corresponding first fixture 10, and the needle pressing seat 46 drives several needle pressing cylinders 47 to slide vertically downward, and the short needle / long needle enters the needle hole 48 in the corresponding needle pressing cylinder 47, and the lower end of the needle pressing cylinder 47 abuts against the square plug 4 at the bottom of the short needle / long needle. As the needle pressing seat 46 continues to move downward, the square plug 4 is pressed vertically downward, so that the elastic ring 6 on the outer periphery of the square plug 4 is stuck in the card groove 7 in the square slot 5, realizing the press-fitting of the short needle / long needle. After the press-fitting is completed, the needle pressing seat 46 and the needle pressing plate 45 can be reset one by one.

[0076] like Figure 2 and Figure 6As shown, the transfer mechanism 52 includes a transfer rack 53, on which is provided a transfer plate 54 horizontally and perpendicularly to the length direction of the second extension plate 50 corresponding to the transfer mechanism 52. The end of the transfer plate 54 close to the transfer rack 53 is slidably installed on the transfer rack 53 along the length direction of the corresponding second extension plate 50; the end of the transfer plate 54 away from the transfer rack 53 is provided with a transfer lever 55 located above the first clamp 10 corresponding to the needle pressing mechanism 43 and corresponding to the shell 1 of the pin part in the first clamp 10. The transfer lever 55 is slidably installed on the transfer plate 54 along the length direction of the transfer plate 54.

[0077] like Figure 2 and Figure 6 As shown, after the needle pressing mechanism 43 completes the needle pressing, the transfer plate 54 slides along the length direction of the corresponding second extension plate 50 to cooperate with the sliding of the transfer lever 55 along the length direction of the transfer plate 54, moving the transfer lever 55 to the side of the first fixture 10 corresponding to the needle pressing mechanism 43 close to the corresponding first extension plate 9, and the transfer lever 55 engages with the pin housing 1 in the first fixture 10. The first fixture 10 corresponding to the needle pressing mechanism 43 and the flip block 14 in the second fixture 51 corresponding to the transfer mechanism 52 are both rotated to a horizontal state with their movable ends close to each other. The transfer plate 54 drives the transfer lever 55 to move as a whole toward the second position change frame 49, horizontally shifting the pin in the first fixture 10 into the second fixture 51. After the pin is transferred, the flip block 14, transfer plate 54, and transfer lever 55 are reset.

[0078] like Figure 2 and Figure 7 As shown, the bending needle mechanism 56 includes a bending needle frame 57, on which is provided a bending needle seat 58 which slides along the length direction of the second extension plate 50 corresponding to the bending needle mechanism 56, and a bending needle plate 59 is vertically slidably installed on the bending needle seat 58, and two groups of bending needle assemblies 60 are symmetrically provided on the bending needle plate 59, and the two groups of bending needle assemblies 60 are relatively horizontally slidably installed on the bending needle plate 59 along the sliding direction perpendicular to the sliding direction of the bending needle seat 58; the bending needle assembly 60 includes a bending needle block 61 which is slidably installed on the bending needle plate 59 along the sliding direction perpendicular to the sliding direction of the bending needle seat 58, and a positioning plate 62 with an axis arranged along the sliding direction of the bending needle seat 58 is positioned and rotatably installed on the bending needle block 61, and two bending needle shafts 63 are symmetrically provided on the adjusting plate 62, and the two bending needle shafts 63 are parallel to the rotation axis of the adjusting plate 62, and the two bending needle shafts 63 are slidably installed on the adjusting plate 62 along the length direction of the adjusting plate 62, and the rotation axis of the adjusting plate 62 is located on the symmetry plane of the two bending needle shafts 63. Among them, the sliding adjustment of the two bending needle shafts 63 in each group of bending needle assemblies 60 is achieved through the adjustment of screws that are threadedly connected to their bases and have opposite thread rotation directions. This is a prior art and is only briefly illustrated in the figure.

[0079] like Figure 2 and Figure 7As shown, when the second position-changing frame 49 drives the second clamp 51 to rotate to correspond to the looper mechanism 56, the looper seat 58 slides as a whole along the length direction of the corresponding second extension plate 50, so that the two rows of long needles enter between the two looper shafts 63 in the two looper assemblies 60 respectively. The adjustment plate 62 in the two looper assemblies 60 is positioned and rotated, and the two looper shafts 63 on the adjustment plate 62 bend the long needles into the curved insertion needles 3, thereby realizing the long needle bending operation. The looper plate 59 is vertically slidably mounted on the looper seat 58, and the height of the bending point of the long needles can be adjusted by adjusting the height of the looper plate 59. The two bending needle assemblies 60 are installed on the bending needle plate 59 by sliding horizontally along the sliding direction perpendicular to the bending needle seat 58 through the bending needle block 61, and the two bending needle shafts 63 are installed on the adjusting plate 62 by sliding along the length direction of the adjusting plate 62. The positions of the two bending needle assemblies 60 and the distance between the two bending needle shafts 63 can be adjusted according to the distance between the two rows of long needles, the thickness of the long needles, etc., to meet the bending processing needs of long needles of different specifications and improve the scope of application.

[0080] like Figure 2 and Figure 8 As shown, the detection mechanism 64 includes a vertically arranged detection frame 65, on which is provided a detection seat 66 that slides along the length direction of the second extension plate 50 corresponding to the detection mechanism 64. A horizontal detection plate 67 is vertically mounted on the lower end surface of the detection seat 66 for vertical sliding. The lower end surface of the horizontal detection plate 67 is provided with a horizontally arranged first detection sensor 68. Vertical detection plates 69 are also provided on the lower end surface of the detection seat 66, located on both sides of the horizontal detection plate 67 and arranged vertically. The two vertical detection plates 69 are mounted on the detection seat 66 for relative horizontal sliding in a direction perpendicular to the sliding direction of the detection seat 66, and a vertically arranged second detection sensor 70 is provided on the side where the two vertical detection plates 69 are close to each other.

[0081] like Figure 2 and Figure 8 As shown, when the second transposition frame 49 drives the second clamp 51, which has completed the bending of the pins, to rotate to the detection mechanism 64, the detection seat 66 slides along the length of the corresponding second extension plate 50 to directly above the corresponding second clamp 51. The horizontal detection plate 67 slides vertically downward, abutting the end of the short pin, or straight pin 2. The first detection sensor 68 detects whether the top ends of several straight pins 2 are uniform in height to determine whether the straight pins 2 are bent. Simultaneously, the vertical detection plates 69 slide closer together, abutting the side ends of the bent pins 3, or the upper ends of the original long pins. The second detection sensor 70 detects whether the side ends of several bent pins 3 are uniform in height and distance to determine whether the bent pins 3 are bent. This achieves simultaneous detection of straight pins 2 and bent pins 3, assessing the assembly quality of the pin assembly and effectively improving detection efficiency.

[0082] like Figure 2 and Figure 9As shown, the unloading mechanism 71 includes a unloading frame 72, which is provided with a unloading seat 73. The unloading seat 73 is slidably mounted on the unloading frame 72 along the width direction of the first extension plate 9 corresponding to the unloading mechanism 71. A unloading guide 74 is provided on the unloading seat 73. The unloading guide 74 is rotatably mounted on the unloading seat 73 at the end adjacent to the second clamp 51 corresponding to the unloading mechanism 71, with its rotation axis extending along the width direction of the first extension plate 9 corresponding to the unloading mechanism 71. Below the end of the unloading guide 74 away from its rotation axis, a finished product basket 75 and a scrap basket 76 are arranged side by side along the sliding direction of the unloading seat 73.

[0083] like Figure 2 and Figure 9 As shown, the detection mechanism 64 and the discharge mechanism 71 are connected in feedback communication. When the detection mechanism 64 detects that the pin components are qualified, the discharge seat 73 drives the discharge guide 74 to move to the corresponding finished product basket 75. When the detection mechanism 64 detects that the pin components are unqualified, the discharge seat 73 drives the discharge guide 74 to move to the corresponding scrap basket 76. The flip block 14 in the second clamp 51 of the discharge mechanism 71 rotates to a horizontal position, and the limit block 13 in the second clamp 51 of the discharge mechanism 71 slides to push the pin components from the second clamp 51 into the discharge guide 74, completing the discharge of the pin components. The discharge guide 74 slowly rotates from the horizontal position to an inclined position, and the pin components slide from the discharge guide 74 to the corresponding finished product basket 75 or scrap basket 76, achieving classified storage of the pin components. Among them, the blanking guide groove 74 receives materials in a horizontal state and discharges materials in an inclined state, which prevents the pin parts from falling directly and quickly from the inclined blanking guide groove 74, causing the straight pins 2 or the bent pins 3 to be easily smashed and deformed, further ensuring the quality of the pin parts in the blanking stage.

[0084] Working principle and usage of the present invention:

[0085] The upper shell mechanism 15 places the housing 1 of the pin assembly to be assembled onto the corresponding first fixture 10. The first position-changing frame 8 rotates the first fixture 10 with the housing 1 placed thereon to the short-pin loading mechanism 20. The short-pin loading mechanism 20 initially inserts the short pins, i.e., the straight pins 2 in the pin assembly, into the housing 1. The first position-changing frame 8 continues to rotate the first fixture 10, after which the short pins have been placed, to the long-pin loading mechanism 35. The long-pin loading mechanism 35 initially inserts the long pins, i.e., the curved pins 3 in the pin assembly, into the housing 1 in a vertical configuration. The first position-changing frame 8 continues to rotate the first fixture 10, after which the long pins have been placed, to the pin pressing mechanism 43. The pin pressing mechanism 43 simultaneously presses the short and long pins, achieving press-fitting of the pins into the housing 1.

[0086] After the needle pressing is completed, the transfer mechanism 52 horizontally transfers the pin piece that has completed the needle pressing in the first fixture 10 corresponding to the needle pressing mechanism 43 to the second fixture 51 corresponding to the transfer mechanism 52, and then the second position transfer frame 49 rotates the second fixture 51 to correspond to the needle bending mechanism 56, and the needle bending mechanism 56 bends the vertical pin into the required curved pin 3; then the second position transfer frame 49 rotates the second fixture 51 to the detection mechanism 64, and the detection mechanism 64 detects the straight pin 2 and the curved pin 3 to determine whether the vertical and horizontal sections of the straight pin 2 and the curved pin 3 are bent. Finally, the second position transfer frame 49 rotates to rotate the pin piece that has completed the detection to the unloading mechanism 71 for unloading.

[0087] In the present invention, during the rotation of the first transposition frame 8, the shell-up mechanism 15, the short pin feeding mechanism 20, the long pin feeding mechanism 35, and the pin pressing mechanism 43 operate simultaneously. During the rotation of the second transposition frame 49, the material transfer mechanism 52, the needle bending mechanism 56, the detection mechanism 64, and the material removal mechanism 71 operate simultaneously. When the first transposition frame 8 and the second transposition frame 49 rotate one circle, the shell-up, short pin feeding, long pin feeding, pin pressing, material transfer, long pin bending, detection, and material removal of a pin component are completed. This reciprocating process achieves automatic assembly of the pin component. During assembly, the bent pin 3 in the pin component is first inserted and press-fitted as a straight long pin. After complete press-fitting, it is bent by the needle bending mechanism 56 to avoid bending and deformation of the bent pin 3 during the pressing process. This ensures the synchronous pressing of the straight pin 2 and the bent pin 3, improves the assembly efficiency of the pin component, ensures the assembly quality of the pin component, and reduces the labor intensity. The foregoing description shows and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the inventive concept described herein by the teachings above or by techniques or knowledge in the relevant art. Modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the appended claims.

Claims

1. An assembly device for automotive pin components, characterized in that: The invention comprises a first transposition frame (8) arranged vertically, wherein the upper end of the first transposition frame (8) is provided with four first extension plates (9) arranged perpendicular to the first transposition frame and horizontally, and each first extension plate (9) is provided with a first fixture (10) at one end away from the first transposition frame (8), and the first transposition frame (8) is positioned and rotated around a vertical axis; the first transposition frame (8) is provided with an upper shell mechanism (15), a short needle feeding mechanism (20), a long needle feeding mechanism (35) and a pressing needle mechanism (43) in a circular array around the first transposition frame (8), and the upper shell mechanism (15), the short needle feeding mechanism (20), the long needle feeding mechanism (35) and the pressing needle mechanism (43) are arranged in sequence and correspond to the four first fixtures (10) one by one; The second transposition frame (49) is provided on a side of the first transposition frame (8) close to the needle pressing mechanism (43), and the upper end of the second transposition frame (49) is provided with four second extension plates (50) arranged perpendicular to the second transposition frame and horizontally arranged in a circumferential array, and the end of the second extension plate (50) away from the second transposition frame (49) is provided with a second clamp (51), and the second transposition frame (49) is positioned and rotated around a vertical axis; the circumferential array around the second transposition frame (49) is provided with a material transfer mechanism (52), a needle bending mechanism (56), a detection mechanism (64) and a material discharge mechanism (71), and the material transfer mechanism (52), the needle bending mechanism (56), the detection mechanism (64) and the material discharge mechanism (71) are arranged in sequence and correspond to the four second clamps (51) one by one; The needle pressing mechanism (43) and the material transfer mechanism (52) are respectively located on both sides of the first extension plate (9) corresponding to the needle pressing mechanism (43); the first clamp (10) corresponding to the needle pressing mechanism (43) and the second clamp (51) corresponding to the material transfer mechanism (52) are located at the same height; the material transfer mechanism (52) horizontally transfers the pin inserting member that has completed the needle pressing in the first clamp (10) corresponding to the needle pressing mechanism (43) to the second clamp (51) corresponding to the material transfer mechanism (52); The first clamp (10) and the second clamp (51) both comprise a left clamp block (11) and a right clamp block (12) symmetrically arranged along the length direction of the corresponding first extension plate (9) / second extension plate (50), the left clamp block (11) and the right clamp block (12) being L-shaped structures with their openings upward and their openings being located on the sides close to each other, and the upper end of the housing (1) of the pin member is higher than the upper ends of the left clamp block (11) and the right clamp block (12); The left clamping block (11) and the right clamping block (12) are mounted on the corresponding first extension plate (9) / second extension plate (50) in a horizontal relative sliding manner in a direction perpendicular to the corresponding first extension plate (9) / second extension plate (50), and a limit block (13) is provided between one end of the left clamping block (11) and the right clamping block (12) close to the corresponding first transposition frame (8) / second transposition frame (49), the upper end of the limit block (13) is not higher than the height of the left clamping block (11) and the right clamping block (12), and the limit block (13) is mounted on the corresponding first extension plate (9) / second extension plate (50) in a sliding manner along the length direction of the left clamping block (11); The left clamping block (11) or the right clamping block (12) is provided with a flip block (14) rotatably connected to the end thereof at one end away from the limit block (13). The rotation axis of the flip block (14) is arranged along the width direction of the corresponding first extension plate (9) / second extension plate (50). When the flip block (14) is rotated to a vertically upward state, the rotation axis is located at its lower end. When the flip block (14) is rotated to a horizontal state, the upper end surface is flush with the lower end surface of the housing (1) of the pin inserting member in the corresponding first clamp (10) / second clamp (51).

2. The assembly equipment for automotive pin components according to claim 1, characterized in that: The short needle feeding mechanism (20) comprises a short needle feeding bracket (21) and a short needle vibrating disk (22) mounted on the short needle feeding bracket (21), wherein the outlet of the short needle vibrating disk (22) is connected to two short needle channels (23) arranged in parallel, wherein the width of the short needle channel (23) is adapted to the width of the square plug block (4) at the bottom of the straight pin (2) in the pin inserting part, and the distance between the two short needle channels (23) is adapted to the distance between the two rows of straight pins (2) in the pin inserting part. ) are adapted to the distance between them; the discharge ports of the two short needle channels (23) are arranged along the length direction of the first extension plate (9) corresponding to the short needle feeding mechanism (20), and the discharge ports of the two short needle channels (23) are provided with a plurality of short needle partition rods (24) along the length direction thereof, one end of the short needle partition rod (24) is eccentrically mounted on the short needle channel (23), and its rotation axis is horizontally arranged along the length direction perpendicular to the discharge port of the short needle channel (23); A short needle loading assembly (25) is also provided at the discharge port of the two short needle channels (23), and the short needle loading assembly (25) includes a short needle loading plate (26) slidably mounted on the short needle loading bracket (21) along the length direction of the first extension plate (9) corresponding to the short needle loading mechanism (20), and a short needle loading seat (27) arranged along the sliding direction of the short needle loading plate (26) is vertically slidably mounted on the lower end of the short needle loading plate (26), and two groups of needle taking cylinders (28) corresponding to the two short needle channels (23) are provided on the lower end surface of the short needle loading seat (27) along its width direction, and each group of the needle taking cylinders (28) is provided with a plurality of them in an array along the length direction of the short needle loading seat (27).

3. The assembly equipment for automotive pin components according to claim 2, characterized in that: The long needle feeding mechanism (35) comprises a long needle feeding bracket (36) and a long needle vibrating disk (37) mounted on the long needle feeding bracket (36), the outlet of the long needle vibrating disk (37) is connected to two long needle channels (38) arranged in parallel, the width of the long needle channel (38) is adapted to the width of the square plug block (4) at the bottom of the bent pin (3) in the pin plug part, and the distance between the two long needle channels (38) is adapted to the distance between the two rows of bent pins (3) in the pin plug part; the discharge ports of the two long needle channels (38) are arranged along the length direction of the first extension plate (9) corresponding to the long needle feeding mechanism (35), and the discharge ports of the two long needle channels (38) are provided with a plurality of long needle partition rods (39) along the length direction thereof, one end of the long needle partition rod (39) is eccentrically mounted on the long needle channel (38), and its rotation axis is horizontally arranged along the length direction perpendicular to the discharge port of the long needle channel (38); A long needle loading assembly (40) is also provided at the discharge port of the two long needle channels (38), and the long needle loading assembly (40) includes a long needle loading plate (41) slidably mounted on the long needle loading bracket (36) along the length direction of the first extension plate (9) corresponding to the long needle loading mechanism (35), and a long needle loading seat (42) arranged along the sliding direction of the long needle loading plate (41) is vertically slidably mounted on the lower end of the long needle loading plate (41), and two groups of needle cylinders (28) corresponding to the two long needle channels (38) are provided on the lower end surface of the long needle loading seat (42) along its width direction, and each group of needle cylinders (28) is provided with a plurality of needle cylinders in an array along the length direction of the long needle loading seat (42).

4. The assembly equipment for automotive pin components according to claim 3, characterized in that: The needle-taking cylinder (28) is provided with two needle-taking clips (29) symmetrically arranged about the vertical plane where the axis thereof is located, and a plurality of elastic protrusions (30) are provided in a rectangular array on the side where the two needle-taking clips (29) are close to each other; the two needle-taking clips (29) are radially slidably installed in the needle-taking cylinder (28), and a guide block (31) is provided along the sliding direction thereof on the side where the two needle-taking clips (29) are away from each other; the inner wall of the needle-taking cylinder (28) is provided with a guide groove (32) arranged along the sliding direction of the needle-taking clips (29), and the guide block (31) is slidably installed in the corresponding guide groove (32); A needle removal spring (33) is connected between the bottom of the guide groove (32) and the end of the guide block (31) away from the needle removal clamp (29), and the bottom of the guide groove (32) and the end of the guide block (31) away from the needle removal clamp (29) are also respectively provided with electromagnetic suction blocks (34) that cooperate with each other; in normal state, the electromagnetic suction block (34) is energized and adsorbed, and the two needle removal clamps (29) are away from each other. When the needle is removed, the electromagnetic suction block (34) is de-energized, and under the action of the needle removal spring (33), the two needle removal clamps (29) slide close to each other and the end of the guide block (31) away from the needle removal clamp (29) is always located in the guide groove (32).

5. The assembly equipment for automotive pin components according to claim 1, characterized in that: The needle pressing mechanism (43) includes a vertically arranged needle pressing frame (44), and a needle pressing plate (45) is provided on the needle pressing frame (44). The needle pressing plate (45) is slidably mounted on the needle pressing frame (44) along a horizontal direction perpendicular to the length direction of the first extension plate (9) corresponding to the needle pressing mechanism (43), and the needle pressing plate (45) can slide to the top of the first clamp (10) corresponding to the needle pressing mechanism (43); a needle pressing seat (46) is vertically slidably mounted on the lower end surface of the needle pressing plate (45), and a plurality of needle pressing cylinders (47) are provided in a rectangular array on the lower end surface of the needle pressing seat (46), and the bottom cross sections of the plurality of needle pressing cylinders (47) correspond to a plurality of square plug blocks (4) on the pin plug in the first clamp (10) corresponding to the needle pressing mechanism (43), and a needle hole (48) coaxial with the needle pressing cylinder (47) is provided in the needle pressing cylinder (47).

6. The assembly equipment for automotive pin components according to claim 1, characterized in that: The transfer mechanism (52) includes a transfer rack (53), and the transfer rack (53) is provided with a transfer plate (54) arranged horizontally and perpendicularly to the length direction of the second extension plate (50) corresponding to the transfer mechanism (52). The end of the transfer plate (54) close to the transfer rack (53) is slidably mounted on the transfer rack (53) along the length direction of the corresponding second extension plate (50); the end of the transfer plate (54) away from the transfer rack (53) is provided with a transfer lever (55) located above the first clamp (10) corresponding to the needle pressing mechanism (43) and correspondingly matched with the housing (1) of the pin insertion member in the first clamp (10), and the transfer lever (55) is slidably mounted on the transfer plate (54) along the length direction of the transfer plate (54).

7. The assembly equipment for automotive pin components according to claim 1, characterized in that: The bending needle mechanism (56) includes a bending needle frame (57), and the bending needle frame (57) is provided with a bending needle seat (58) that slides along the length direction of the second extension plate (50) corresponding to the bending needle mechanism (56). A bending needle plate (59) is vertically slidably mounted on the bending needle seat (58), and two groups of bending needle assemblies (60) are symmetrically provided on the bending needle plate (59), and the two groups of bending needle assemblies (60) are relatively horizontally slidably mounted on the bending needle plate (59) along a sliding direction perpendicular to the sliding direction of the bending needle seat (58); the bending needle assembly (60) includes a bending needle seat (58) and a bending needle plate (59) that slides along a direction perpendicular to the sliding direction of the bending needle seat (58). 8) A bending needle block (61) is slidably mounted on the bending needle plate (59) in a sliding direction, and a positioning plate (62) is positioned and rotatably mounted on the bending needle block (61) with an axis arranged along the sliding direction of the bending needle seat (58). Two bending needle shafts (63) are symmetrically provided on the positioning plate (62), and the two bending needle shafts (63) are parallel to the rotation axis of the positioning plate (62). The two bending needle shafts (63) are slidably mounted on the positioning plate (62) along the length direction of the positioning plate (62), and the rotation axis of the positioning plate (62) is located on the symmetry plane of the two bending needle shafts (63).

8. The assembly equipment for automotive pin components according to claim 1, characterized in that: The detection mechanism (64) includes a vertically arranged detection frame (65), and the detection frame (65) is provided with a detection seat (66) that slides along the length direction of the second extension plate (50) corresponding to the detection mechanism (64). The lower end surface of the detection seat (66) is vertically slidably mounted with a horizontally arranged horizontal detection plate (67), and the lower end surface of the horizontal detection plate (67) is provided with a horizontally arranged first detection sensor (68); the lower end surface of the detection seat (66) is also provided with vertical detection plates (69) located on both sides of the horizontal detection plate (67), and the two vertical detection plates (69) are relatively horizontally slidably mounted on the detection seat (66) along a sliding direction perpendicular to the detection seat (66), and a vertically arranged second detection sensor (70) is provided on the side where the two vertical detection plates (69) are close to each other.

9. A pin component for automobile, characterized in that: The assembly device according to any one of claims 1 to 8 comprises a shell (1), wherein two rows of straight pins (2) are provided on the shell (1) along its width direction, and each row of straight pins (2) is provided with a plurality of arrays along the length direction of the shell (1); the shell (1) is further provided with bent pins (3) located on the side away from each other of the two rows of straight pins (2), and each row of bent pins (3) is also provided with a plurality of arrays along the length direction of the shell (1) and corresponds one to one to the straight pins (2) on one side; the bent pins (3) are in an L-shaped structure with an opening downward, and the bend is in an arc transition, and the two rows of straight pins (2) are arranged in an L-shaped structure with an opening downward, and the bent pins (3) are arranged in an L-shaped structure with an opening downward, and the bent pins (3) are arranged in an L-shaped structure with an opening downward, and the bent pins (3) are arranged in an L-shaped structure with an arc transition, and the bent pins (3) in the two rows are arranged in an L-shaped structure with an opening downward .... The bending directions of the bent pins (3) are opposite; the upper ends of the straight pins (2) are higher than the upper ends of the bent pins (3), and the end faces of the straight pins (2) and the bent pins (3) away from the shell (1) are both arc-shaped; a plurality of the straight pins (2) and the bent pins (3) are provided with square plugs (4) at their bottoms, and a plurality of square slots (5) corresponding to the square plugs (4) are provided in a rectangular array on the upper end face of the shell (1); an elastic ring (6) is provided on the outer periphery of the square plugs (4) close to the upper end thereof, and a slot (7) is provided in the square plugs (4) to cooperate with the elastic ring (6).

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