Press fitting mechanism

Abstract

The utility model discloses a press-fitting mechanism in the field of PIN pressing equipment, and the press-fitting mechanism comprises a first rack, the first rack is movably provided with a fixing assembly used for fixing a workpiece, and the fixing assembly is stressed to move; a guide structure and a press-fitting part are fixed to the first rack, and the press-fitting part can move back and forth in the arrangement direction of the guide structure and the press-fitting part. The second rack is provided with a clamping part, and the clamping part has the moving freedom degree in the space; the conveying component is arranged on one side of the first rack and used for moving and conveying the PINs. When the clamping part is used, the PIN on the conveying part can be transferred to a mounting opening of a workpiece, the PIN is rapidly and accurately placed in the mounting opening under the guiding of the guiding structure, efficient and rapid positioning of the PIN is achieved, the workpiece is fixed by the fixing assembly in advance, displacement during press fitting is prevented, and the service life of the PIN is prolonged. And finally, the finished product quality of the pressed workpiece is guaranteed, labor is reduced, and the percent of pass is increased.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of PIN pressing equipment, and particularly relates to a pressing mechanism. BACKGROUND

[0002] In production, an electromechanical device often has a PIN pressing process. Commonly, a PIN (needle) is pressed into a positioning hole on a circuit board, and some automatic mechanical arms need to be installed with PINs. The PIN is usually a cylindrical iron column. At present, the PIN is mainly pressed by hand. A special workpiece is used to press the PIN. This method has high labor intensity and low efficiency. In addition, the swing arm in the mechanical arm usually has an irregular structure and is difficult to be stably placed. The PIN is pressed by the workpiece through manual operation, which easily leads to unqualified PIN pressing. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a pressing mechanism to solve the defects of low PIN installation efficiency and low qualification rate in the prior art.

[0004] To achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0005] The application discloses a pressing mechanism, which comprises

[0006] A first rack movably has a fixing assembly for fixing a workpiece. The fixing assembly moves under force. A guide structure and a pressing part are fixed on the first rack. The pressing part can move back and forth along the guide structure and the arrangement direction of the pressing part.

[0007] A second rack is provided with a clamping part. The clamping part has a spatial movement degree of freedom.

[0008] A conveying part is arranged on one side of the first rack and is used for moving and conveying the PIN. The clamping part clamps and transfers the PIN. The pressing part presses the PIN on the workpiece along the guide structure.

[0009] In a further scheme of the application, the pressing part comprises a booster cylinder. The cylinder body of the booster cylinder is fixed to the top of the first rack. The end of the telescopic rod of the booster cylinder is fixed with a pressing block.

[0010] In a further scheme of the application, the guide structure comprises a guide seat. The guide seat is fixed to the bottom of the first rack. The guide seat is provided with a guide port with a gradually changing inner diameter. The pressing part moves back and forth in the guide port.

[0011] The further scheme of the present application, the fixed assembly includes a fixed seat, the fixed seat is slidingly installed on the first rack, the surface of the fixed seat is provided with a plurality of fixing pieces, the first rack is further provided with a displacement cylinder, the telescopic rod of the displacement cylinder is fixedly connected with the fixed seat.

[0012] The further scheme of the present application, the first rack and the fixed assembly are provided with a limiting assembly, the limiting assembly includes a positioning cylinder and a positioning block, the positioning cylinder is fixed on the first rack, the positioning block is fixed on the fixed assembly, the telescopic rod of the positioning cylinder is fixed with a positioning piece, and the positioning block is provided with a notch matched with the shape of the positioning piece.

[0013] The further scheme, the first rack is fixed with an adjusting seat, the adjusting seat is slidingly provided with a guide groove plate, the positioning cylinder is fixed on the guide groove plate, and the adjusting seat is provided with adjusting bolts on both sides in a threaded matched manner, one end of the adjusting bolt is close to and abuts against the guide groove plate.

[0014] The further scheme of the present application, the clamping part includes a first cylinder, a second cylinder and a third cylinder, the first cylinder is fixed on the second rack, the cylinder body of the second cylinder is fixedly connected with the output end of the first cylinder, the cylinder body of the third cylinder is fixedly connected with the output end of the second cylinder, and the output end of the third cylinder is fixed with a clamping jaw; the output directions of the first cylinder, the second cylinder and the third cylinder satisfy the movement of the clamping jaw in space.

[0015] The further scheme of the present application, the conveying part includes a mounting seat and a chain, the mounting seat is provided with a gear at the end, the chain is meshed with two gears, a plurality of molds are fixed on the chain, a motor is fixed on one side of the mounting seat, and the output end of the motor is fixedly connected with the corresponding gear.

[0016] The further scheme of the present application, the first rack and the second rack are arranged vertically, and the first rack and the conveying part are arranged in parallel.

[0017] The beneficial effects of the present application are:

[0018] The clamping part designed in the present application can transfer the PIN pin on the conveying part to the mounting port of the workpiece when in use, and the PIN pin is quickly and accurately placed in the mounting port under the guidance of the guide structure, so that the positioning PIN pin is realized efficiently and quickly, the workpiece is fixed in advance by the fixed assembly, displacement during press fitting is prevented, the finished product quality of the workpiece after press fitting is finally ensured, a large amount of labor is reduced, and the product qualification rate is improved.

[0019] In addition, the fixed assembly in the device cooperates with the limiting assembly to limit when moving, meets the pressing work of workpieces of different sizes, the positioning of the positioning member in the limiting assembly is adjusted in coordinates, which is realized by rotating the adjusting bolt in the process, the device is more adaptable, and the fault tolerance of the device is increased. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a structural schematic diagram of a pressing mechanism in an embodiment of the present application;

[0021] Figure 2 FIG. 2 is a structural schematic diagram of a transport component in an embodiment of the present application;

[0022] Figure 3 FIG. 3 is a structural schematic diagram of the pressing mechanism after removing a swing arm in an embodiment of the present application;

[0023] Figure 4 FIG. 4 is an enlarged view of position A in FIG. 3; Figure 3

[0024] Figure 5 FIG. 5 is a structural diagram of the pressing mechanism from another perspective in an embodiment of the present application;

[0025] Figure 6 FIG. 6 is an enlarged view of position B in FIG. 5; Figure 5

[0026] FIG. 7 is a schematic diagram of a clamping part on a second rack in an embodiment of the present application. Figure 7 1, first rack; 2, second rack; 3, transport component; 4, fixed assembly; 5, guide structure; 6, limiting assembly; 100, workpiece; 200, PIN pin; 11, booster cylinder; 12, pressing block; 13, displacement cylinder; 21, No. 1 cylinder; 22, No. 2 cylinder; 23, No. 3 cylinder; 24, clamping jaw; 31, mold; 32, chain; 33, mounting seat; 34, motor; 41, fixed seat; 42, fixed member; 51, guide seat; 52, guide port; 61, positioning cylinder; 62, positioning member; 63, positioning block; 64, guide groove plate; 71, adjusting seat; 72, adjusting bolt.

[0027] DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, not as any limitation on the present application and its application or use.

[0029] As Figures 1 to 3 ​​As shown, the embodiment discloses a press-fitting mechanism, which is used for positioning the workpiece 100 and press-fitting the PIN pin 200 on the workpiece 100. The workpiece 100 in the embodiment is a part in a mechanical arm, specifically an oscillating arm. The press-fitting mechanism comprises a first rack 1, a second rack 2 and a conveying component 3. The first rack 1 and the second rack 2 are arranged vertically, and the first rack 1 and the conveying component 3 are arranged in parallel. The first rack 1 is movably provided with a fixing assembly 4 for fixing the workpiece 100. The fixing assembly 4 moves under external force. The first rack 1 is fixed with a guide structure 5 and a press-fitting part. The press-fitting part and the guide structure 5 are arranged in an up-down manner, and the press-fitting part can move back and forth along the guide structure 5 and the arrangement direction of the press-fitting part. The second rack 2 is provided with a clamping part, which has a degree of freedom in space movement. The conveying component 3 is arranged in parallel on one side of the first rack 1, and is used for moving and conveying the PIN pin 200.

[0030] In use, the workpiece 100 is pre-fixed on the fixing assembly 4. After the fixing assembly 4 moves, the mounting port of the workpiece 100 is aligned with the guide structure 5. At this time, the clamping part clamps and transfers the PIN pin 200 on the conveying component 3 to the guide structure 5. The released PIN pin 200 accurately falls into the mounting port through the guide structure 5. The press-fitting part performs press-fitting work on the PIN pin 200.

[0031] As shown in the accompanying drawings, Figure 2 In the embodiment, the conveying component 3 comprises a mounting seat 33 and a chain 32. The mounting seat 33 and the first rack 1 are arranged in parallel. The mounting seat 33 is movably provided with gears at the ends. The chain 32 is engagedly connected with the two gears. The chain 32 is fixed with a plurality of molds 31. The mold 31 is a T-shaped metal rod structure. An installation slot is arranged in the vertical rod. The PIN pin 200 is manually filled into the idle installation slot, so that the clamping part continuously clamps the PIN pin 200. A motor 34 is fixed on one side of the mounting seat 33. The output end of the motor 34 is fixedly connected with the corresponding gear. In use, the motor 34 is started. The motor 34 drives the chain 32 to drive the mold 31 to rotate.

[0032] As shown in the accompanying drawings, Figure 3 In the embodiment, the press-fitting part comprises a supercharged cylinder 11. The cylinder body of the supercharged cylinder 11 is fixed to the top of the first rack 1. The end of the telescopic rod of the supercharged cylinder 11 is fixed with a press-fitting block 12. The supercharged cylinder 11 drives the press-fitting block 12 to move close to or away from the guide structure 5. In some other embodiments, for parts with high assembly difficulty, a hydraulic device can be used for pressing to ensure smooth installation. The hydraulic peak value of the hydraulic device is high to ensure safety.

[0033] As shown in the accompanying drawings, Figure 4As shown, the guiding structure 5 in the embodiment includes a guiding seat 51 fixed at the bottom of the first rack 1, the guiding seat 51 and the fixed assembly 4 have a certain interval, the interval is designed according to the corresponding parts of the press fitting, the guiding seat 51 is provided with a guiding opening 52 with a gradually changing inner diameter, and the press fitting block 12 moves back and forth in the guiding opening 52. Figure 4 From top to bottom, that is, the diameter gradually decreases from top to bottom, which is beneficial to the correction of the position of the PIN pin 200.

[0034] As shown in the accompanying drawings, Figure 3 and 5 As shown, the fixed assembly 4 in the embodiment includes a fixed seat 41 slidably mounted on the first rack 1 through a slide rail structure, the slide rail structure is a mature prior art, which will not be described here, the fixed seat 41 is provided with a plurality of fixed parts 42 on the surface, the installation position and number of the fixed parts 42 are determined by the shape of the workpiece 100, the types of the fixed parts 42 are different, and the fixed parts 42 basically play a supporting role, the end portions of some fixed parts 42 are designed into a shape structure matched with the surface of the workpiece 100, the installation positions of the fixed parts 42 correspond to the required support point positions of the workpiece 100, and it is ensured that each fixed part 42 needs to be in contact with the workpiece 100 after the workpiece 100 is placed. The first rack 1 is also fixed with a displacement air cylinder 13, and the telescopic rod of the displacement air cylinder 13 is fixedly connected with the fixed seat 41.

[0035] As shown in the accompanying drawings, Figure 7 As shown, the first rack 1 and the fixed assembly 4 are provided with a limiting assembly 6 in the embodiment, the limiting assembly 6 includes a positioning air cylinder 61 and a positioning block 63, the positioning air cylinder 61 is fixed at the side of the bottom of the first rack 1, the positioning block 63 is fixed at one side of the side of the fixed seat 41, and the telescopic rod of the positioning air cylinder 61 is fixed with a positioning part 62, which is a triangular metal block in the embodiment. A slot or notch matched with the metal block structure is formed in the positioning block 63. When the fixed seat 41 reaches the target position driven by the displacement air cylinder 13, the positioning part 62 is placed in the slot of the positioning block 63 driven by the positioning air cylinder 61, at this time, the workpiece 100 on the fixed seat 41 is positioned, and the stability of the workpiece 100 in the press fitting operation is ensured.

[0036] In a further embodiment, an adjusting seat 71 is fixed on the first rack 1, and a guiding groove plate 64 is slidably arranged on the adjusting seat 71, the design scheme of a dovetail groove and a dovetail sliding block can be designed between the guiding groove plate 64 and the adjusting seat 71, the positioning air cylinder 61 is fixed on the guiding groove plate 64, and adjusting bolts 72 are threadedly and cooperatively mounted on the two sides of the adjusting seat 71, and one end of the adjusting bolt 72 is close to and abuts against the guiding groove plate 64.

[0037] In some other embodiments, when installing the adjusting bolt 72, one end of the adjusting bolt 72 is threaded through the adjusting seat 71 and rotatably connected to the guide groove plate 64. Here, the guide groove plate 64 is supported by two adjusting bolts 72, but its stability is not strong, and the guide groove plate 64 is prone to shaking.

[0038] As attached Figure 6 As shown, in this embodiment, the clamping part includes a first cylinder 21, a second cylinder 22, and a third cylinder 23. The first cylinder 21 is fixed on the second frame 2 along the arrangement direction of the second frame 2. The cylinder body of the second cylinder 22 is vertically fixed to the output end of the first cylinder 21, and the output direction is perpendicular to the second frame 2. The cylinder body of the third cylinder 23 is horizontally fixed to the output end of the second cylinder 22, and the output direction is perpendicular to the second cylinder 22. A gripper 24 is fixed on the output end of the third cylinder 23. The output direction of cylinder 23 satisfies the movement of gripper 24 in three-dimensional space, that is, the movement within the XYZ coordinate system; when in use, cylinder 21 drives cylinder 22, cylinder 23 and gripper 24 to move, cylinder 22 drives cylinder 23 and gripper 24 to move, and cylinder 23 drives gripper 24 to move. Here, gripper 24 is driven by a bidirectional cylinder, and the specific structure is existing technology, so it will not be described in detail; when in use, gripper 24 is clamped by pin 200 on transport component 3 and transferred to the pressure mounting position by the three cylinders.

[0039] Specific usage;

[0040] First, the workpiece 100 is fixedly installed using the various fixing parts 42. The moving cylinder is activated to drive the fixing seat 41 to move into place. The positioning cylinder 61 drives the positioning part 62 to be positioned. Then, the PIN pin 200 on the clamping part is transferred to the guide seat 51. After the PIN pin 200 is released, it enters the installation port of the workpiece 100 along the guide port 52. Finally, the pressurizing block 12 is driven by the pressurizing cylinder 11 to perform pressurization. The movement of the mold 31 is dynamic and stop-motion, and the interval time matches the time of one pressurization. After resetting each part, the next round of pressurization can be performed.

[0041] In the description of the application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0042] In the description of the application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

Claims

1. A press-fitting mechanism characterized by comprising: Comprising The first rack (1) is movably mounted with a fixing assembly (4) for fixing a workpiece (100), the fixing assembly (4) is forced to move; the first rack (1) is fixed with a guide structure (5) and a press fitting part, the press fitting part can move back and forth along the guide structure (5), the press fitting part arrangement direction; The second rack (2) is provided with a clamping part, which has a spatial movement freedom; The transport component (3) is arranged on one side of the first rack (1) for the movement of the PIN pin (200), wherein the clamping part clamps and transfers the PIN pin (200), and the press fitting part press fits the PIN pin (200) on the workpiece (100) along the guide structure (5).

2. The press mechanism of claim 1, wherein The press fitting part includes a booster cylinder (11), the cylinder body of the booster cylinder (11) is fixed to the top of the first rack (1), and the end of the telescopic rod of the booster cylinder (11) is fixed with a press fitting block (12).

3. The press mechanism of claim 1, wherein The guide structure (5) includes a guide seat (51) fixed to the bottom of the first rack (1), and the guide seat (51) is provided with a guide port (52) with a gradually changing inner diameter, and the press fitting part moves back and forth along the guide port (52).

4. The press mechanism of claim 1, wherein The fixing assembly (4) includes a fixing seat (41) slidably mounted on the first rack (1), and the fixing seat (41) is provided with a plurality of fixing pieces (42) on the surface, and the first rack (1) is further provided with a displacement cylinder (13), and the telescopic rod of the displacement cylinder (13) is fixedly connected with the fixing seat (41).

5. The press mechanism of claim 1, wherein The first rack (1) and the fixing assembly (4) are provided with a limiting assembly (6), the limiting assembly (6) includes a positioning cylinder (61) and a positioning block (63), the positioning cylinder (61) is fixed on the first rack (1), the positioning block (63) is fixed on the fixing assembly (4), the telescopic rod of the positioning cylinder (61) is fixed with a positioning piece (62), and the positioning block (63) is provided with a notch matched with the shape of the positioning piece (62).

6. The press mechanism of claim 5, wherein, The first rack (1) is fixed with an adjusting seat (71), the adjusting seat (71) is slidably provided with a guide groove plate (64), the positioning cylinder (61) is fixed on the guide groove plate (64), and the adjusting seat (71) is provided with adjusting bolts (72) on both sides in threaded cooperation, one end of the adjusting bolt (72) is close to and abuts against the guide groove plate (64).

7. The press mechanism of claim 1, wherein The clamping part comprises a first cylinder (21), a second cylinder (22) and a third cylinder (23), the first cylinder (21) is fixed on the second rack (2), the cylinder body of the second cylinder (22) is fixedly connected with the output end of the first cylinder (21), the cylinder body of the third cylinder (23) is fixedly connected with the output end of the second cylinder (22), and the output end of the third cylinder (23) is fixedly connected with a clamping jaw (24); the output directions of the first cylinder (21), the second cylinder (22) and the third cylinder (23) satisfy the movement of the clamping jaw (24) in space.

8. The press mechanism of claim 1, wherein, The conveying part (3) comprises a mounting seat (33) and a chain (32), the mounting seat (33) is rotatably provided with a gear at the end, the chain (32) is meshingly connected with two gears, a plurality of molds (31) are fixed on the chain (32), and a motor (34) is fixed on one side of the mounting seat (33) and is fixedly connected with a corresponding gear at the output end.

9. The press mechanism of claim 1, wherein, The first rack (1) and the second rack (2) are vertically arranged, and the first rack (1) and the conveying part (3) are arranged in parallel.

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