Positioning pin press-fitting mechanism

Abstract

The utility model discloses a positioning pin press-fitting mechanism which comprises a working table, a press-fitting table is arranged above the working table, an upper beam plate is arranged above the press-fitting table, four stand columns are arranged between the upper beam plate and the press-fitting table, a first servo electric cylinder is arranged in the center of the upper beam plate, and a second servo electric cylinder is arranged in the center of the upper beam plate. A self-centering floating pressing head is arranged below the first servo electric cylinder, a sliding rail is arranged above the press-fitting table, a storage plate is arranged above the sliding rail, two sliding blocks are arranged below the two ends of the storage plate, the sliding blocks are arranged outside the sliding rail, and the sliding blocks are in sliding connection with the sliding rail. The press-fitting mechanism adopts the self-centering floating pressure head and the servo electric cylinder to press the positioning pin into the part mounting hole, the self-centering floating pressure head can solve the problem of coaxial and vertical unstable factors of the positioning pin and the part mounting hole, the servo electric cylinder can control pressure, depth, torque and depth, and the press-fitting effect of the positioning pin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy product installation, in particular to a positioning pin press-fitting mechanism. Background Art

[0002] Dowel pins are a commonly used mechanical connection element. Using the workpiece hole as a reference for positioning, dowel pins are components that help limit an object's degrees of freedom. They are primarily used to determine position in two-dimensional space, controlling linear motion in the X, Y, and Z axes, as well as rotational motion about them, for a total of six degrees of freedom. In molds consisting of two or more parts, dowel pins precisely position adjacent parts. Dowel pins are primarily installed by press-fitting, a process that typically involves pressing two parts with an interference fit into place.

[0003] The Chinese patent publication number is CN218518099U, and the authorization announcement date is February 24, 2023. A positioning pin press-fitting mechanism includes a cylinder, a press-fitting base plate, the cylinder is fixed on the press-fitting base plate; a lifting seat, the lifting seat is slidably installed on the press-fitting base plate and is connected to the cylinder; a pressure rod, the pressure rod is fixed on the lifting seat; a feeding seat, the feeding seat is installed on the press-fitting base plate, and the pressure rod is movably inserted into the feeding hole of the feeding seat; a feeding pipe, the feeding pipe is installed on one side of the feeding seat and communicates with the feeding hole; and an insertion device, the insertion device is installed on the feeding seat and is used to guide the positioning pin. The positioning pin press-fitting mechanism provided by the utility model drives the pressure rod through the cylinder to automatically insert the positioning pin entering the insertion device into the top of the pin hole of the workpiece, and press the positioning pin in synchronously. The overall structure is simple, the pressing speed is fast, and the pressing efficiency is high; and the pressing depth of the positioning pin can be conveniently adjusted. At the same time, the pressure rod and the insertion device are easy to replace and can be suitable for positioning pins of different specifications.

[0004] Existing positioning pin press-fitting generally adopts manual press-fitting. The positioning pin is coaxial with the part mounting hole, and the vertical dimension is poorly consistent due to manual installation stability. The positioning pin is easily pressed off, resulting in unstable or out-of-tolerance dimensions of the final product, reducing the positioning pin press-fitting effect and failing to meet usage requirements. Utility Model Content

[0005] The purpose of the present invention is to provide a positioning pin press-fitting mechanism to solve the problem raised in the above background technology that the existing positioning pin press-fitting generally adopts manual press-fitting, the positioning pin is coaxial with the part mounting hole, and the vertical dimension is poorly stabilized due to manual installation, which makes it easy for the positioning pin to be pressed off, resulting in unstable or out-of-tolerance dimensions of the final product, reducing the positioning pin press-fitting effect and failing to meet the use requirements.

[0006] Material toggling mechanism, its both ends are fixed with thesaid mechanism, and its both ends are fixed with the pressing plate, and the pressing plate is connected with the working table by screws.

[0007] Preferably, a second servo electric cylinder is provided on one side of the storage plate, and the second servo electric cylinder is connected to the press-fitting table by screws, an L-shaped connecting block is provided between the second servo electric cylinder and the storage plate, and the two ends of the L-shaped connecting block are respectively fixedly connected to the telescopic end of the second servo electric cylinder and the storage plate.

[0008] Preferably, a lifting plate is provided below the upper beam plate, the lifting plate is provided outside the self-centering floating pressure head, and the self-centering floating pressure head is fixedly connected to the lifting plate, connecting sleeves are provided at the four corners of the lifting plate, there are four connecting sleeves, and the connecting sleeves are fixedly connected to the lifting plate, and the column and the connecting sleeve are slidably connected.

[0009] Preferably, a positioning column is provided above the storage plate, two positioning columns are provided, and the positioning columns are fixedly connected to the storage plate.

[0010] Preferably, a protective frame is provided above the workbench, and the protective frame is fixedly connected to the workbench. A protective plate is provided outside the protective frame, and the protective plate is connected to the protective frame by screws.

[0011] Preferably, a cabinet structure is provided below the workbench, and the cabinet structure is connected to the workbench by screws.

[0012] Preferably, fixed plates are provided below the four corners of the cabinet structure, and there are four fixed plates. Connecting rods are provided above the four fixed plates, and one end of the connecting rod is fixedly connected to the fixed plate. The connecting rod is slidably connected to the cabinet structure, and an adjusting nut is provided on the outside of the connecting rod, and the adjusting nut is threadedly connected to the connecting rod, and the adjusting nut is provided below the cabinet structure.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model device is provided with a first servo electric cylinder, a self-centering floating pressure head, a storage plate, and a second servo electric cylinder. The second servo electric cylinder drives the storage plate to move along the slide rail, and moves the part mounting hole to the bottom of the self-centering floating pressure head. The first servo electric cylinder drives the self-centering floating pressure head to rise and fall. As the self-centering floating pressure head descends, the locating pin is aligned with the part mounting hole and pressed into it to realize the locating pin press-fitting. The self-centering floating pressure head can solve the problem of coaxiality and vertical instability of the locating pin and the part mounting hole. The servo electric cylinder can accurately control the pressure, depth, torque and depth, and improve the locating pin press-fitting effect.

[0015] The utility model device is provided with a positioning column, a fixing plate, a connecting rod and an adjusting nut. The positioning column is inserted from the lower end of the part to position the part, which can quickly fix the part to the storage plate and improve the efficiency of the positioning pin press-fitting. The fixing plate and the connecting rod constitute a supporting structure to support the press-fitting mechanism. The adjusting nut is rotated to change the length of the connecting rod and adjust the supporting structure, which can meet the needs of the press-fitting mechanism being fixed on an uneven ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a structural diagram of the connection between the press-fitting platform and the upper beam plate of the present utility model;

[0018] Figure 3 This is a structural diagram of the connection between the storage plate and the press-fitting platform of the present utility model;

[0019] Figure 4 This is a structural diagram of the connection between the fixed plate and the cabinet structure of the present utility model.

[0020] In the figure: 1. Workbench; 2. Cabinet structure; 3. Protective frame; 4. Protective plate; 5. Press-fitting table; 6. Upper beam plate; 7. First servo electric cylinder; 8. Lifting plate; 9. Storage plate; 10. Column; 11. Fixed plate; 12. Connecting rod; 13. Connecting sleeve; 14. Second servo electric cylinder; 15. Self-centering floating pressure head; 16. Slide rail; 17. Sliding block; 18. L-shaped connecting block; 19. Positioning column; 20. Adjusting nut. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-4, the utility model provides an embodiment: a positioning pin press-fitting mechanism, including a workbench 1, a press-fitting platform 5 is provided above the workbench 1, and the press-fitting platform 5 is connected to the workbench 1 by screws, an upper beam plate 6 is provided above the press-fitting platform 5, a column 10 is provided between the upper beam plate 6 and the press-fitting platform 5, four columns 10 are provided, and the two ends of the four columns 10 are respectively fixedly connected to the press-fitting platform 5 and the upper beam plate 6, a first servo electric cylinder 7 is provided at the center of the upper beam plate 6, and the first servo electric cylinder 7 is connected to the upper beam plate 6 by screws, a self-centering floating pressure head 15 is provided below the first servo electric cylinder 7, and the self-centering floating pressure head 15 is connected to the telescopic end of the first servo electric cylinder 7, press-fitting A slide rail 16 is provided above the platform 5, and the slide rail 16 is fixedly connected to the pressing platform 5. A storage plate 9 is provided above the slide rail 16, and sliding blocks 17 are provided below both ends of the storage plate 9. Two sliding blocks 17 are provided, and the sliding blocks 17 are fixedly connected to the storage plate 9. The sliding blocks 17 are provided on the outside of the slide rail 16, and the sliding blocks 17 are slidably connected to the slide rail 16. A second servo electric cylinder 14 is provided on one side of the storage plate 9, and the second servo electric cylinder 14 is connected to the pressing platform 5 by screws. An L-shaped connecting block 18 is provided between the second servo electric cylinder 14 and the storage plate 9, and the two ends of the L-shaped connecting block 18 are respectively fixedly connected to the telescopic end of the second servo electric cylinder 14 and the storage plate 9.

[0023] During use: the parts are fixed to the storage plate 9, the locating pins are installed on the self-centering floating pressure head 15, the second servo electric cylinder 14 is driven to drive the storage plate 9 to move along the slide rail 16, and the part mounting hole is moved to the bottom of the self-centering floating pressure head 15, and the first servo electric cylinder 7 is driven to drive the self-centering floating pressure head 15 to descend. As the self-centering floating pressure head 15 descends, the locating pins are pressed into the part mounting holes to realize the locating pin press-fitting.

[0024] See also Figure 2 and Figure 3 A lifting plate 8 is provided below the upper beam plate 6. The lifting plate 8 is provided on the outside of the self-centering floating pressure head 15, and the self-centering floating pressure head 15 is fixedly connected to the lifting plate 8. Connecting sleeves 13 are provided at the four corners of the lifting plate 8. There are four connecting sleeves 13, and the connecting sleeves 13 are fixedly connected to the lifting plate 8. The column 10 is slidably connected with the connecting sleeve 13. A positioning column 19 is provided above the storage plate 9. There are two positioning columns 19, and the positioning columns 19 are fixedly connected to the storage plate 9. The lifting plate 8 rises and falls synchronously with the self-centering floating pressure head 15. The lifting plate 8 and the column 10 are slidably connected by the connecting sleeve 13, which can ensure that the self-centering floating pressure head 15 rises and falls smoothly. The positioning column 19 is inserted from the lower end of the part to position the part, which can quickly fix the part to the storage plate 9 and improve the efficiency of the positioning pin press.

[0025] See also Figure 1A protective frame 3 is provided above the workbench 1, and the protective frame 3 is fixedly connected to the workbench 1. A protective plate 4 is provided on the outside of the protective frame 3, and the protective plate 4 is connected to the protective frame 3 by screws. The protective frame 3 and the protective plate 4 form a protective layer on the outside of the pressing mechanism.

[0026] See also Figure 1 and Figure 4 A cabinet structure 2 is provided under the workbench 1, and the cabinet structure 2 is connected to the workbench 1 by screws. Fixed plates 11 are provided under the four corners of the cabinet structure 2. There are four fixed plates 11. Connecting rods 12 are provided above the four fixed plates 11, and one end of the connecting rod 12 is fixedly connected to the fixed plate 11. The connecting rod 12 is slidably connected to the cabinet structure 2. An adjusting nut 20 is provided on the outside of the connecting rod 12, and the adjusting nut 20 is threadedly connected to the connecting rod 12. The adjusting nut 20 is provided under the cabinet structure 2. The cabinet structure 2 can store supporting equipment for pressing the locating pins. The fixed plate 11 and the connecting rod 12 constitute a supporting structure to support the pressing mechanism. The adjusting nut 20 is rotated to change the length of the connecting rod 12 and adjust the supporting structure to meet the needs of fixing the pressing mechanism on an uneven ground.

[0027] Working principle: The positioning column 19 is inserted from the lower end of the part to quickly position and fix the part on the storage plate 9. The positioning pin is installed on the self-centering floating pressure head 15. The second servo electric cylinder 14 is driven to drive the storage plate 9 to move along the slide rail 16, and the part mounting hole is moved to directly below the self-centering floating pressure head 15. The first servo electric cylinder 7 is driven to drive the self-centering floating pressure head 15 to descend. As the self-centering floating pressure head 15 descends, the positioning pin is aligned with the part mounting hole and pressed in to realize the positioning pin press-fitting; the fixed plate 11 and the connecting rod 12 constitute a supporting structure to support the press-fitting mechanism. The adjusting nut 20 is turned to change the length of the connecting rod 12 and adjust the support structure to meet the requirements of the press-fitting mechanism being fixed on uneven ground.

[0028] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning pin press-fitting mechanism, comprising a workbench (1), characterized in that: A press-fitting platform (5) is provided above the workbench (1), and the press-fitting platform (5) is connected to the workbench (1) by screws. An upper beam plate (6) is provided above the press-fitting platform (5), and a column (10) is provided between the upper beam plate (6) and the press-fitting platform (5). Four columns (10) are provided, and the two ends of the four columns (10) are fixedly connected to the press-fitting platform (5) and the upper beam plate (6) respectively. A first servo electric cylinder (7) is provided at the center of the upper beam plate (6), and the first servo electric cylinder (7) is connected to the upper beam plate (6) by screws. A A self-centering floating pressure head (15) is provided, and the self-centering floating pressure head (15) is connected to the telescopic end of the first servo electric cylinder (7); a slide rail (16) is provided above the press-fitting table (5), and the slide rail (16) is fixedly connected to the press-fitting table (5); a storage plate (9) is provided above the slide rail (16); sliding blocks (17) are provided below both ends of the storage plate (9); two sliding blocks (17) are provided, and the sliding blocks (17) are fixedly connected to the storage plate (9); the sliding blocks (17) are provided outside the slide rail (16), and the sliding blocks (17) are slidably connected to the slide rail (16).

2. The positioning pin press-fitting mechanism according to claim 1, characterized in that: A second servo electric cylinder (14) is provided on one side of the storage plate (9), and the second servo electric cylinder (14) is connected to the press-fitting table (5) by screws. An L-shaped connecting block (18) is provided between the second servo electric cylinder (14) and the storage plate (9), and two ends of the L-shaped connecting block (18) are fixedly connected to the telescopic end of the second servo electric cylinder (14) and the storage plate (9), respectively.

3. The positioning pin press-fitting mechanism according to claim 1, characterized in that: A lifting plate (8) is provided below the upper beam plate (6), the lifting plate (8) is provided outside the self-centering floating pressure head (15), and the self-centering floating pressure head (15) is fixedly connected to the lifting plate (8), and connecting sleeves (13) are provided at the four corners of the lifting plate (8), four connecting sleeves (13) are provided, and the connecting sleeves (13) are fixedly connected to the lifting plate (8), and the column (10) is connected to the connecting sleeve (13) in a through-sliding manner.

4. The positioning pin press-fitting mechanism according to claim 1, characterized in that: A positioning column (19) is provided above the storage plate (9), two positioning columns (19) are provided, and the positioning columns (19) are fixedly connected to the storage plate (9).

5. The positioning pin press-fitting mechanism according to claim 1, characterized in that: A protective frame (3) is provided above the workbench (1), and the protective frame (3) is fixedly connected to the workbench (1); a protective plate (4) is provided outside the protective frame (3), and the protective plate (4) is connected to the protective frame (3) via screws.

6. The positioning pin press-fitting mechanism according to claim 1, characterized in that: A cabinet structure (2) is provided below the workbench (1), and the cabinet structure (2) and the workbench (1) are connected via screws.

7. The positioning pin press-fitting mechanism according to claim 6, characterized in that: A fixing plate (11) is provided below each of the four corners of the cabinet structure (2), and four fixing plates (11) are provided. A connecting rod (12) is provided above each of the four fixing plates (11), and one end of the connecting rod (12) is fixedly connected to the fixing plate (11). The connecting rod (12) is slidably connected to the cabinet structure (2). An adjusting nut (20) is provided on the outside of the connecting rod (12), and the adjusting nut (20) is threadedly connected to the connecting rod (12). The adjusting nut (20) is provided below the cabinet structure (2).

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