A press-fitting mechanism

Abstract

A kind of press-fit mechanism, including linear push module, internal push module and pressure head;Linear push module is connected with mounting plate through lifting plate, and drives mounting plate to move up and down;Internal push module two ends are installed lifting plate and mounting plate respectively, and lifting plate moves relative to mounting plate under the drive of internal push module;The upper end of pressure head is installed on lifting plate, and the other end passes through corresponding first slot hole on mounting plate, and the lower surface of pressure head exceeds the lower surface of mounting plate.The structure provided by the utility model avoids the problems of press-fitting not in place or over-pressing by segmented driving control and collaborative work of multiple driving devices;And have good modular design, facilitate integrated fixture, measurement and other modules, realize the integrated application of press-fitting and detection and other functions.

Description

Technical Field

[0001] This utility model relates to the field of assembly technology, specifically to a press-fitting mechanism. Background Technology

[0002] In the assembly of parts, press fitting is a crucial operation, where a press fitting mechanism uses its pressure head to press one part into another to achieve a tight fit and reliable connection. Currently, most widely used automatic press fitting mechanisms employ a single drive unit to apply pressure in a fixed direction, but this approach has certain limitations. First, the control precision of the press fitting stroke is limited. When the drive unit has a large movement error, incomplete or excessive press fitting can easily occur, affecting assembly quality and product performance. Second, due to the wide variety of parts and their different models, existing automatic press fitting mechanisms have poor versatility and are difficult to adapt to workpieces of different sizes. Furthermore, in practical applications, press fitting operations often require coordination with other functional modules, such as integrating a measuring device to measure the levelness of the part's end face. However, existing press fitting mechanisms lack modular design, making it difficult to integrate auxiliary devices, resulting in complex system structures and bulky sizes, impacting overall assembly efficiency and space utilization. Utility Model Content

[0003] The present invention aims to solve the above problems and provide a pressing mechanism that can avoid incomplete or excessive pressing caused by the movement error of the drive device. It can also adapt to the pressing of different types of parts and can be quickly adapted to other structures.

[0004] The present invention solves the aforementioned problem by employing the following technical solution: a pressing mechanism comprising: a linear push module, an internal push module, and a pressing head; the linear push module passes through a lifting plate and is connected to a mounting plate, the mounting plate moving up and down under the drive of the linear push module; the lifting plate is positioned above the mounting plate, and both are horizontally arranged; the internal push module has the lifting plate and the mounting plate respectively mounted at both ends, the lifting plate moving relative to the mounting plate under the drive of the internal push module; the upper end of the pressing head is mounted on the lifting plate, the other end passes through a corresponding first slot in the mounting plate, the lower surface of the pressing head extends beyond the lower surface of the mounting plate, and the width of the first slot is greater than the diameter of the pressing head.

[0005] The linear push module moves in a direction parallel to and perpendicular to the horizontal plane of the lifting plate, as does the internal push module; the pressure head is positioned perpendicular to the horizontal plane of the lifting plate.

[0006] It also includes an adjustment module, which consists of a rotating mechanism, a connecting rod, and a linear guide rail. The rotating mechanism rotates around a rotation axis perpendicular to the horizontal plane, and a mounting shaft is fixedly mounted on the rotating mechanism. The connecting rod is horizontally positioned, with one end rotatably mounted on the mounting shaft. A fixing member is provided in the pressure head, and the other end of the connecting rod is rotatably mounted on the pressure head and located above the fixing member. The upper surface of the fixing member is in contact with the lower surface of the connecting rod, and the diameter of the fixing member is larger than the inner diameter of the mounting hole at the other end of the connecting rod. The linear guide rail is horizontally positioned on the lifting plate, and the upper end of the pressure head is slidably mounted on the linear guide rail. The length direction of the first slot is consistent with the length direction of the linear guide rail.

[0007] The linear guide rail is oriented along the length of the rotation axis.

[0008] The rotating mechanism has a central slot. The linear push module is connected to the mounting plate through an extension joint. The extension joint passes through the lifting plate and the central slot, with one end connected to the execution end of the linear push module and the other end connected to the mounting plate.

[0009] The internal drive module consists of a gear rotation mechanism and a rectangular rack. The gear rotation mechanism is mounted on the mounting plate, and the rectangular rack is connected to the lifting plate and mounted below the lifting plate. The gear rotation mechanism includes a gear and a gear drive module. The gear rotates around the center of the gear under the drive of the gear drive module. The gear is vertically arranged, and the rectangular rack is vertically arranged with its serrations facing the gear and meshing with the gear.

[0010] The mounting plate has a second slot located directly below the rectangular rack. The second slot is larger than the cross-section of the rectangular rack, and the rectangular rack passes through the second slot under the drive of the gear rotation mechanism.

[0011] It also includes a guide shaft, which is vertically arranged, with one end mounted on the lifting plate and the other end passing through a third slot in the mounting plate. The diameter of the main body of the guide shaft is smaller than the inner diameter of the third slot, and the diameter of its lower surface is larger than the inner diameter of the third slot.

[0012] The number of pressure heads is N, where N≥2, and the pressure heads are evenly distributed around the rotation axis.

[0013] The mounting plate has a quick-change tool mounting position on its lower surface. The beneficial effects of this invention are as follows: The provided pressing mechanism, through a segmented drive control strategy, uses multiple drive devices to collaboratively control the pressing head to apply pressure to the parts, avoiding the problems of incomplete or excessive pressing caused by the movement error of a single drive device, thus improving pressing accuracy and stability. Simultaneously, the pressing mechanism adjusts the horizontal position of the pressing head by adjusting modules, thereby adapting to pressing operations on parts of different sizes, enhancing applicability and versatility. Furthermore, the pressing mechanism features a good modular design, allowing for quick adaptation to auxiliary modules such as fixtures and measuring heads, achieving integrated application of pressing and inspection functions, improving assembly efficiency and system integration. Attached Figure Description

[0014] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0015] Figure 1 This is a schematic diagram of the structure of a pressing mechanism according to the present invention; Figure 2 This is a schematic diagram of the pressing mechanism of the present invention from another perspective; Figure 3 This is a schematic diagram of the structure of the adjustment module 3 in one embodiment of the present invention; Figure 4 This is a schematic diagram of the rotating mechanism 31 in one embodiment of the present invention; Figure 5 This is a schematic diagram showing the installation relationship between the linear push module 1, the lifting plate 5, and the mounting plate 6 in one embodiment of the present invention; Figure 6 This is a schematic diagram of the internal pushing module 2 in one embodiment of the present invention; Figure 7 This is a schematic diagram of a pressing mechanism according to an embodiment of the present invention; Figure 8 This is a schematic diagram of a pressing mechanism according to another embodiment of the present invention. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] This utility model provides a pressing mechanism, such as Figure 1 and Figure 2As shown, it includes a linear push module 1, an internal push module 2, and a pressure head 4; the linear push module 1 passes through a lifting plate 5 and is connected to a mounting plate 6, and the mounting plate 6 moves up and down under the drive of the linear push module 1; the lifting plate 5 is set above the mounting plate 6, and the two are set horizontally; the lifting plate 5 and the mounting plate 6 are respectively installed at both ends of the internal push module 2, and the lifting plate 5 moves relative to the mounting plate 6 under the drive of the internal push module 2; the upper end of the pressure head 4 is installed on the lifting plate 5, and the other end passes through the corresponding first slot 61 on the mounting plate 6, the lower surface of the pressure head 4 extends beyond the lower surface of the mounting plate 6, and the width of the first slot 61 is greater than the diameter of the pressure head 4.

[0018] In one specific embodiment, the upper end of the pressure head 4 is installed on the lower surface of the lifting plate 5, and the lower surface of the pressure head 4 is used to contact the parts to be pressed; the number of pressure heads 4 is N, which are evenly distributed on the lifting plate 5, preferably 3 or more; correspondingly, the number of first slots 61 is N, which is consistent with the number of pressure heads 4 and their positions correspond one-to-one.

[0019] The linear push module 1 and the internal push module 2 move in parallel and perpendicular directions to the horizontal plane where the lifting plate 5 is located; the pressure head 4 is set perpendicular to the horizontal plane where the lifting plate 5 is located.

[0020] In one specific embodiment, the pressing mechanism further includes an adjustment module 3. The pressing mechanism consists of a linear push module 1, an internal push module 2, an adjustment module 3, and a pressing head 4. The adjustment module 3 is as follows: Figure 3 As shown, the device consists of a rotating mechanism 31, a connecting rod 32, and a linear guide rail 33. The rotating mechanism 31 rotates around a rotation axis perpendicular to the horizontal plane. A mounting shaft 34 is fixedly mounted on the rotating mechanism 31. The connecting rod 32 is horizontally positioned, with one end rotatably mounted on the mounting shaft 34. A fixing member 41 is provided in the pressure head 4. The other end of the connecting rod 32 is rotatably mounted on the pressure head 4 and located above the fixing member 41. The upper surface of the fixing member 41 is in contact with the lower surface of the connecting rod 32. The diameter of the fixing member 41 is larger than the inner diameter of the mounting hole at the other end of the connecting rod 32. The linear guide rail 33 is horizontally positioned on the lifting plate 5. A mounting block 42 is connected to the upper end of the pressure head 4. The mounting block 42 is slidably mounted on the linear guide rail 33 via a slider 331. The length direction of the first slot 61 is consistent with the length direction of the linear guide rail 33.

[0021] In one specific embodiment, the number of connecting rods 32, linear guides 33, and mounting shafts 34 in the adjustment module 3 is consistent with the number of pressure heads 4. The mounting shafts 34 are evenly distributed around the rotation axis, and the lengths of the linear guides 33 are consistent. The linear guides 33 are installed on the lower surface of the lifting plate 5.

[0022] Rotating mechanism 31, such as Figure 4As shown, it consists of a rotating disk 311 and a rotating drive module 312. The rotating disk 311 rotates around a rotating axis under the drive of the rotating drive module 312. The rotating axis is the central axis of the rotating disk 311.

[0023] The rotary drive module 312 includes a motor 3121 and a motor mounting block 3122. The upper surface of the motor mounting block 3122 is mounted at the center of the lower surface of the lifting plate 5. The motor 3121 is vertical, with one end fixed to the motor mounting block 3122 and the other end passing through the corresponding hole on the lifting plate 5 and extending beyond the plane of the mounting plate 6. The mounting shaft 34 is fixedly mounted on the lower surface of the rotary mechanism 31. The diameter of the bottom limit 341 of the mounting shaft 34 is larger than the inner diameter of the mounting hole at one end of the connecting rod 32 to prevent the connecting rod 32 from falling off.

[0024] The motor mounting block 3122 can use a standard hollow rotary platform; when the motor mounting block 3122 has its own drive, there is no need to install the motor 3121.

[0025] In one specific embodiment, the linear guide 33 is positioned with its length direction facing the rotation axis.

[0026] Taking the clockwise rotation of the rotating mechanism 31 as an example, the rotating mechanism 31 rotates clockwise around the rotating axis, and drives the mounting shaft 34, which is fixedly installed on its lower surface, to rotate synchronously to another position in space; one end of the connecting rod 32 is installed on the mounting shaft 34, so its position changes accordingly, and at the same time, the other end of the connecting rod 32 is moved by force, which drives the slider 331 to move along the length direction of the linear guide rail 33, and synchronously drives the pressure head 4 to change its position.

[0027] In one specific embodiment, the linear drive module 1 adopts as follows: Figure 5 The connection and installation method shown has a central slot 313 in the rotating mechanism 31. The linear push module 1 is connected to the mounting plate 6 through the extension joint 11. The extension joint 11 passes through the joint slot 12 provided at the corresponding position of the lifting plate 5 and the central slot 313 of the rotating mechanism 31. One end is connected to the execution end of the linear push module 1 through the first connecting flange 12, and the other end is connected to the mounting plate 6 through the second connecting flange 13. The diameter of the joint slot 12 is larger than the outer diameter of the extension joint 11.

[0028] The rotating disk 311 adopts a hollow ring structure. The corresponding positions of the lifting plate 5 and the motor mounting block 3122 are also provided with holes corresponding to the slots in the ring structure of the rotating disk 311, so as to facilitate the linear push module 1 to pass through the lifting plate 5, the motor mounting block 3122, the rotating disk 311 and connect with the mounting plate 6 in sequence.

[0029] In one specific embodiment, the internal drive module 2 adopts as follows: Figure 6The structure shown consists of a gear rotating mechanism 21 and a rectangular rack 22. The gear rotating mechanism 21 is mounted on the mounting plate 6 via a gear mounting seat 24, specifically on the upper surface of the mounting plate 6. The rectangular rack 22 is connected to the lifting plate 5 via a rack mounting block 23 and is mounted below the lifting plate 5. Specifically, the rack mounting block 23 is mounted on the lower surface of the lifting plate 5, and the rectangular rack 22 is mounted on the side of the rack mounting block 23. The gear rotation mechanism 21 includes a gear 211 and a gear drive module 212. The gear 211 rotates around the gear center under the drive of the gear drive module 212. The gear 211 is vertically arranged, and the rectangular rack 22 is vertically arranged. The serrations of the rectangular rack 22 face the gear 211 and mesh with the gear 211.

[0030] The gear drive module 212 uses a servo motor; there is a certain distance between the gear rotation mechanism 21 and the lifting plate 5, and the rectangular rack 22 is a certain distance from the mounting plate 6. After the gear 211 rotates clockwise under the drive, the gear 211 drives the rectangular rack 22 downward, so that the lifting plate 5 is close to the mounting plate 6.

[0031] The mounting plate 6 has a second slot 62, which is located directly below the rectangular rack 22. The second slot 62 is larger than the cross-section of the rectangular rack 22. The rectangular rack 22 passes through the second slot 62 under the drive of the gear rotation mechanism 21. The second slot 62 on the mounting plate 6 can increase the stroke of the internal push module 2.

[0032] In actual use, the linear push module 1 first pushes the mounting plate 6 and other components down to a certain distance and then stops. Then, the internal push module 2 drives the lifting plate 5 and the pressure head 4 installed on the lifting plate 5 to rise and fall. The drive control of the internal push module 2 is more precise than the drive control of the linear push module 1, thereby realizing staged drive control.

[0033] In one specific embodiment, the pressing mechanism, such as Figure 7 As shown, it also includes a guide shaft 7 and a linear slide rail 8. The guide shaft 7 provides linear guidance for the lifting and lowering movement of the internal push module 2. The guide shaft 7 is set vertically, with one end installed on the lifting plate 5 and the other end passing through the third slot 63 on the mounting plate 6. The diameter of the main body of the guide shaft 7 is smaller than the inner diameter of the third slot 63 to facilitate passing through the third slot 63. The diameter of the lower surface is larger than the inner diameter of the third slot 63 to serve as a limit.

[0034] There are N pressure heads 4, where N ≥ 2, and the pressure heads 4 are evenly distributed around the rotation axis.

[0035] The linear slide rail 8 is vertically set and is connected to the mounting back plate 9 which is fixedly installed on the mounting plate 6. The mounting back plate 9 is slidably installed on the linear slide rail 8 by a slider. The linear slide rail 8 provides vertical linear guidance for the movement of the overall structure.

[0036] In one specific embodiment, the pressing mechanism is as follows: Figure 8 As shown, a quick-change tool mounting position is provided on the lower surface of the mounting plate 6.

[0037] In one specific embodiment, the quick-change tool can be a level measuring head 10. The measuring head is installed on the lower surface of the mounting plate 6. Under normal conditions, the lower surface of the level measuring head 10 exceeds the lower surface of the pressure head 4. Under the drive of the linear push module 1, it moves to contact the end face of the component and measures its levelness. When it is necessary to use the pressure head 4 to press the component, the internal push module 2 is controlled to drive the pressure head 4 to move downward relative to the mounting plate 6, so that the lower surface of the pressure head 4 exceeds the lower surface of the level measuring head 10, and the lower surface of the pressure head 4 contacts the component and presses the component.

[0038] The quick-change tool can also be a clamp 11. When the clamp 11 is needed to perform the part clamping action, the internal push module 2 can be controlled to drive the lifting plate 5 and the pressure head 4 on it to move upward relative to the mounting plate 6, so as to avoid the pressure head 4 interfering with the clamp 11 in the process of clamping the part.

[0039] The solution provided by this invention employs a segmented drive control strategy, where multiple drive devices collaboratively control the pressure head to apply pressure to components. This avoids the problems of incomplete or excessive pressing caused by movement errors in a single drive device, thus improving pressing accuracy and stability. Simultaneously, this pressing mechanism adjusts the horizontal position of the pressure head through adjustable modules, adapting to the pressing operations of different types and models of components, enhancing applicability and versatility. Furthermore, this pressing mechanism features a well-designed modular system, allowing for rapid adaptation to auxiliary modules such as fixtures and measuring heads, achieving integrated application of pressing and inspection functions, improving assembly efficiency and system integration.

[0040] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A pressing mechanism, characterized in that, include: A linear push module (1), an internal push module (2), and a pressure head (4) are provided. The linear push module (1) passes through a lifting plate (5) and is connected to a mounting plate (6). The mounting plate (6) moves up and down under the drive of the linear push module (1). The lifting plate (5) is positioned above the mounting plate (6), and both are horizontally positioned. The lifting plate (5) and the mounting plate (6) are respectively installed at both ends of the internal push module (2). The lifting plate (5) moves relative to the mounting plate (6) under the drive of the internal push module (2). The upper end of the pressure head (4) is installed on the lifting plate (5), and the other end passes through the corresponding first slot (61) on the mounting plate (6). The lower surface of the pressure head (4) extends beyond the lower surface of the mounting plate (6), and the width of the first slot (61) is greater than the diameter of the pressure head (4).

2. The pressing mechanism as described in claim 1, characterized in that, The linear push module (1) moves in a direction parallel to and perpendicular to the horizontal plane where the lifting plate (5) is located; the pressure head (4) is set perpendicular to the horizontal plane where the lifting plate (5) is located.

3. The pressing mechanism as described in claim 1, characterized in that, It also includes an adjustment module (3), which consists of a rotating mechanism (31), a connecting rod (32), and a linear guide rail (33). The rotating mechanism (31) rotates around a rotation axis perpendicular to the horizontal plane. A mounting shaft (34) is fixedly provided on the rotating mechanism (31). The connecting rod (32) is horizontally arranged, with one end rotatably mounted on the mounting shaft (34). A fixing member (41) is provided in the pressure head (4), and the other end of the connecting rod (32) is rotatably mounted on the mounting shaft (34). The pressure head (4) is located on and above the fixing member (41). The upper surface of the fixing member (41) is in contact with the lower surface of the connecting rod (32). The diameter of the fixing member (41) is larger than the inner diameter of the mounting hole at the other end of the connecting rod (32). The linear guide rail (33) is horizontally arranged on the lifting plate (5). The upper end of the pressure head (4) is slidably mounted on the linear guide rail (33). The length direction of the first slot (61) is consistent with the length direction of the linear guide rail (33).

4. The pressing mechanism as described in claim 3, characterized in that, The linear guide (33) is oriented along the rotation axis in the length direction.

5. A pressing mechanism as described in claim 3, characterized in that, The rotating mechanism (31) is provided with a central slot (313). The linear push module (1) is connected to the mounting plate (6) through an extension joint (11). The extension joint (11) passes through the lifting plate (5) and the central slot (313), with one end connected to the execution end of the linear push module (1) and the other end connected to the mounting plate (6).

6. A pressing mechanism as described in claim 1 or 2, characterized in that, The internal push module (2) consists of a gear rotation mechanism (21) and a rectangular rack (22). The gear rotation mechanism (21) is mounted on the mounting plate (6), and the rectangular rack (22) is connected to the lifting plate (5) and mounted below the lifting plate (5). The gear rotation mechanism (21) includes a gear (211) and a gear drive module (212). The gear (211) rotates around the center of the gear under the drive of the gear drive module (212). The gear (211) is vertically arranged, and the rectangular rack (22) is vertically arranged. The serrations of the rectangular rack (22) face the gear (211) and mesh with the gear (211).

7. A pressing mechanism as described in claim 6, characterized in that, The mounting plate (6) is provided with a second slot (62), which is located directly below the rectangular rack (22). The second slot (62) is larger than the cross-section of the rectangular rack (22), and the rectangular rack (22) passes through the second slot (62) under the drive of the gear rotation mechanism (21).

8. A pressing mechanism as described in claim 2, characterized in that, It also includes a guide shaft (7), which is vertically arranged, with one end installed on the lifting plate (5) and the other end passing through the third slot (63) on the mounting plate (6). The main body diameter of the guide shaft (7) is smaller than the inner diameter of the third slot (63), and the lower surface diameter is larger than the inner diameter of the third slot (63).

9. A pressing mechanism as described in claim 3, characterized in that, The number of pressure heads (4) is N, where N≥2, and the pressure heads (4) are evenly distributed around the rotation axis.

10. A pressing mechanism as described in claim 1, characterized in that, The mounting plate (6) has a quick-change tool mounting position on its lower surface.

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