Automatic bush press-fitting device

Abstract

The utility model discloses an automatic bush press-fitting device which comprises a machine frame, a press-fitting mechanism, a press-fitting mechanism, a press-fitting mechanism, a press-fitting mechanism and a press-fitting mechanism. The press-fitting assembly is connected to the rack and comprises a driving cylinder, a press-fitting head and a grabbing and releasing part, the press-fitting head is used for installing the first metal lining in a sleeving mode, the grabbing and releasing part is arranged on the outer side of the press-fitting head and can magnetically attract and fix the first metal lining, and the driving cylinder is connected with the press-fitting head and drives the press-fitting head to linearly move along the side facing the positioning base; pressing the first metal bushing into the workpiece; the grabbing and releasing component is arranged on the press-fitting head in a sliding mode in the moving direction of the press-fitting head. When the first metal lining is pressed in, the workpiece can abut against and push the grabbing and releasing component to be separated from the first metal lining. The driving cylinder and the magnetic type grabbing and releasing component are integrated, the fixing mode of the first metal lining is optimized, accurate pressing-in of the first metal lining is achieved, the assembling efficiency and quality are remarkably improved, the automation degree is high, operation is easy and convenient, and the labor intensity and the safety risk are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bushing assembly equipment technical field, especially in bushing automatic press -fitting device. BACKGROUND

[0002] The installation of bushings is widely used in many engineering fields, such as automotive industry, aerospace, mechanical manufacturing, construction and civil engineering, bridge construction, home appliances, agricultural machinery, heavy equipment, consumer goods and office equipment, etc. They are mainly used to reduce friction, absorb vibration, transmit force and provide positioning support. Wherever rotation, oscillation or other forms of relative motion are involved, bushings can be applied, which is crucial to protect parts from damage caused by direct contact. Depending on the requirements of different application scenarios, bushings of different materials and characteristics can be selected, such as metal bushings, plastic bushings or rubber bushings, etc. For example, in the manufacture of automobile axles, the assembly between the axle housing and the bushing is a key process. The function of the bushing is to provide a permanent gasket for the annular weld joint of the axle housing, to improve the welding strength, and thus to improve the overall axle strength. In the traditional process, this process relies on manual use of hammers and other tools to knock the bushing into the axle housing. However, due to the large interference fit between the axle housing and the bushing, this manual operation not only takes time and effort, but also easily causes damage to the bushing or the axle housing due to uneven force, thereby affecting the assembly quality and product performance. SUMMARY

[0003] The utility model aims at least to solve one of the technical problems existing in the prior art. To this end, the utility model provides a bushing automatic press -fitting device, which integrates a hydraulic cylinder, an electric pump and a magnetic gripping and releasing component, realizes the accurate press -fitting of two bushings at the same time, significantly improves the assembly efficiency and quality, has high automation degree, is easy to operate, reduces labor intensity and safety risk, ensures the consistency and precision of each assembly, and greatly improves the production efficiency and product reliability.

[0004] The bushing automatic press -fitting device according to the utility model embodiment comprises:

[0005] A rack is fixedly provided with a positioning seat, and the positioning seat can position a workpiece;

[0006] A press -fitting assembly is connected to the rack, and the press -fitting assembly comprises a drive cylinder, a press -fitting head and a gripping and releasing component. The press -fitting head is used for sleeved installation of a first metal bushing. The gripping and releasing component is arranged on the outer side of the press -fitting head and can magnetically attract and fix the first metal bushing. The drive cylinder is connected to and drives the press -fiting head to move linearly along the side of the positioning seat, so as to press the first metal bushing into the workpiece;

[0007] The grabbing and releasing component is slidably arranged on the pressing head along the movement direction of the pressing head, and the workpiece can push the grabbing and releasing component away from the first metal bushing when the first metal bushing is pressed in.

[0008] The automatic bushing pressing device has the following advantages: the first metal bushing is installed efficiently, safely and with high quality, the problems of high labor intensity, high safety risk and unstable quality in traditional manual operation are solved, the first metal bushing is fixed by the grabbing and releasing component through magnetic attraction, displacement or falling of the first metal bushing during pressing is avoided, the fixed effect is stable and reliable, damage to the surface of the first metal bushing caused by mechanical clamping is avoided, the integrity and assembly quality of the first metal bushing are ensured, the grabbing and releasing component is slidably arranged on the pressing head along the movement direction of the pressing head, and the first metal bushing is automatically separated from the workpiece during pressing of the first metal bushing, so that the operation process is simplified, the first metal bushing is released without additional steps, the installation time of each first metal bushing is greatly shortened, and the work efficiency is improved.

[0009] The automatic bushing pressing device has the following advantages: the first metal bushing is installed efficiently, safely and with high quality, the problems of high labor intensity, high safety risk and unstable quality in traditional manual operation are solved, the first metal bushing is fixed by the grabbing and releasing component through magnetic attraction, displacement or falling of the first metal bushing during pressing is avoided, the fixed effect is stable and reliable, damage to the surface of the first metal bushing caused by mechanical clamping is avoided, the integrity and assembly quality of the first metal bushing are ensured, the grabbing and releasing component is slidably arranged on the pressing head along the movement direction of the pressing head, and the first metal bushing is automatically separated from the workpiece during pressing of the first metal bushing, so that the operation process is simplified, the first metal bushing is released without additional steps, the installation time of each first metal bushing is greatly shortened, and the work efficiency is improved.

[0010] The automatic bushing pressing device has the following advantages: the first metal bushing is installed efficiently, safely and with high quality, the problems of high labor intensity, high safety risk and unstable quality in traditional manual operation are solved, the first metal bushing is fixed by the grabbing and releasing component through magnetic attraction, displacement or falling of the first metal bushing during pressing is avoided, the fixed effect is stable and reliable, damage to the surface of the first metal bushing caused by mechanical clamping is avoided, the integrity and assembly quality of the first metal bushing are ensured, the grabbing and releasing component is slidably arranged on the pressing head along the movement direction of the pressing head, and the first metal bushing is automatically separated from the workpiece during pressing of the first metal bushing, so that the operation process is simplified, the first metal bushing is released without additional steps, the installation time of each first metal bushing is greatly shortened, and the work efficiency is improved.

[0011] The automatic bushing pressing device has the following advantages: the first metal bushing is installed efficiently, safely and with high quality, the problems of high labor intensity, high safety risk and unstable quality in traditional manual operation are solved, the first metal bushing is fixed by the grabbing and releasing component through magnetic attraction, displacement or falling of the first metal bushing during pressing is avoided, the fixed effect is stable and reliable, damage to the surface of the first metal bushing caused by mechanical clamping is avoided, the integrity and assembly quality of the first metal bushing are ensured, the grabbing and releasing component is slidably arranged on the pressing head along the movement direction of the pressing head, and the first metal bushing is automatically separated from the workpiece during pressing of the first metal bushing, so that the operation process is simplified, the first metal bushing is released without additional steps, the installation time of each first metal bushing is greatly shortened, and the work efficiency is improved.

[0012] According to some embodiments of the present invention, the automatic bushing pressing device has a reset pressure ring around its outer periphery. The reset pressure ring is located on the side of the gripping and releasing component away from the positioning seat. When the drive cylinder is connected and drives the pressing head to move linearly towards the side away from the positioning seat, the reset pressure ring is fixed relative to the frame and can push the gripping and releasing component to reset, so as to magnetically fix the next first metal bushing.

[0013] According to some embodiments of the present invention, the automatic bushing pressing device includes a pressing head comprising a guide sleeve, the end of which is provided with a first guide surface for guiding the insertion of the first metal bushing.

[0014] According to some embodiments of the present invention, in the automatic bushing pressing device, the positioning seat is located below the pressing head, and the center line of the positioning seat coincides with the center line of the pressing head.

[0015] According to some embodiments of the present invention, the automatic bushing pressing device includes a positioning seat for mounting a second metal bushing, and a drive cylinder for connecting to and driving the pressing head to move vertically.

[0016] According to some embodiments of the present invention, the automatic bushing pressing device has a positioning seat equipped with a guide member, and the guide member is provided with a second guide surface to guide the insertion of the second metal bushing.

[0017] According to some embodiments of the present invention, the automatic bushing pressing device is a hydraulic cylinder, the frame is equipped with an electric pump, and the electric pump is connected to and drives the hydraulic cylinder to operate.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of the overall structure of the automatic bushing pressing device according to an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the automatic bushing pressing device according to an embodiment of the present utility model;

[0022] Figure 3 for Figure 2 An enlarged view of A is shown;

[0023] Figure 4for Figure 2 An enlarged view of B is shown;

[0024] Figure 5 This is an exploded view of the connection structure between the pressing head and the gripping and releasing component of the automatic bushing pressing device according to an embodiment of this utility model.

[0025] Explanation of icon numbers:

[0026] Frame 100; Positioning seat 110; Guide component 111; Second guide surface 1111; Electric pump 120;

[0027] Pressing assembly 200; drive cylinder 210; pressing head 220; guide sleeve 221; first guide surface 2211; gripping and releasing component 230; sliding block 231; magnet 232; limiting protrusion 2311; limiting block 240; reset pressure ring 250;

[0028] First metal bushing 300;

[0029] Second metal bushing 400. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Bushings are widely used in various engineering fields, such as the automotive industry, aerospace, machinery manufacturing, construction and civil engineering, bridge construction, home appliances, agricultural machinery, heavy equipment, consumer goods, and office equipment. They are primarily used to reduce friction, absorb vibration, transmit force, and provide positioning support. Bushings are likely to be used wherever rotation, oscillation, or other forms of relative motion are involved, and they are crucial for protecting components from damage caused by direct contact. Depending on the requirements of different applications, bushings of different materials and properties can be selected, such as metal bushings, plastic bushings, or rubber bushings. For example, in automotive axle manufacturing, the assembly between the axle housing and the bushing is a critical process. The bushing's role is to provide a permanent backing for the circumferential weld of the axle housing tube, improving weld strength and thus enhancing the overall axle strength. Traditionally, this process relies on manual hammering of the bushing into the axle housing using tools such as hammers. However, due to the significant interference fit between the axle housing and the bushing, this manual operation is not only time-consuming and labor-intensive but also prone to damage to the bushing or axle housing due to uneven force application, thus affecting assembly quality and product performance.

[0036] Therefore, such as Figures 1 to 5As shown, the automatic bushing pressing device proposed in this utility model includes a frame 100, a positioning seat 110 fixedly disposed on the frame 100, and a pressing assembly 200 connected to the frame 100. The positioning seat 110 can position the workpiece. The pressing assembly 200 includes a drive cylinder 210, a pressing head 220, and a gripping / releasing component 230. Specifically, the pressing head 220 is used to fit and install a first metal bushing 300. The gripping / releasing component 230 is disposed on the outside of the pressing head 220 and can magnetically fix the first metal bushing 300. The drive cylinder 210 is connected to and drives the pressing head 220 to move linearly along the side facing the positioning seat 110 to press the first metal bushing 300 into the workpiece. In application, the gripping / releasing component 230 is slidably disposed on the pressing head 220 along the movement direction of the pressing head 220; when the first metal bushing 300 is pressed in, the workpiece can push against the gripping / releasing component 230 to disengage from the first metal bushing 300. By optimizing the fixing method of the first metal bushing 300, providing stable pressing force, and implementing a highly automated operation process, efficient, safe, and high-quality installation of the first metal bushing 300 is achieved, improving upon the problems of high labor intensity, high safety risks, and unstable quality inherent in traditional manual operations. First, the pressing head 220 is used to install the first metal bushing 300, and the first metal bushing 300 is fixed magnetically by the gripping and releasing component 230 on its outer side, ensuring that the first metal bushing 300 will not shift or fall off during the pressing process. This magnetic fixing method not only provides a stable and reliable fixing effect but also avoids damage to the surface of the first metal bushing 300 that may be caused by mechanical clamping, ensuring the integrity of the first metal bushing 300 and the assembly quality. Second, the drive cylinder 210 is connected to the pressing head 220, driving the pressing head 220 to move linearly along the side facing the positioning seat 110 to achieve precise pressing of the first metal bushing 300. In addition, the gripping and releasing component 230 is slidably arranged along the movement direction of the pressing head 220, and can automatically detach from the first metal bushing 300 as the workpiece moves upward during the pressing process, ready for the next operation. This design simplifies the operation process, and the release of the first metal bushing 300 can be completed without additional steps, which greatly shortens the installation time of each first metal bushing 300 and improves work efficiency.

[0037] Refer to Figure 2 , Figure 3 and Figure 5In some embodiments of this utility model, the gripping and releasing component 230 includes a sliding block 231 and a magnet 232. The magnet 232 is installed on the side of the sliding block 231 facing the center of the pressing head 220. This allows the magnet 232 to be closer to the pressing head 220, enabling a stronger magnetic attraction and fixation of the first metal bushing 300, thus achieving a more stable and reliable fixation of the first metal bushing 300. Furthermore, the magnet 232 is located on the side of the sliding block 231 facing the positioning seat 110, ensuring that the magnet 232 automatically detaches from the first metal bushing 300 as the workpiece moves upward during the pressing process. This allows the first metal bushing 300 to be completely pressed into the workpiece, ensuring the assembly integrity and quality of the first metal bushing 300. Furthermore, in some embodiments of this utility model, a limiting block 240 is fixedly provided on the outer wall of the pressing head 220, and limiting protrusions 2311 are provided at both ends of the sliding block 231 along the movement direction of the pressing head 220. The limiting block 240 is placed between the two limiting protrusions 2311 to limit the displacement area of ​​the sliding block 231, thereby enhancing the reliability and durability of the system and preventing the gripping and releasing component 230 from deviating from the predetermined track or moving unnecessarily during operation. At the same time, it simplifies the workload of equipment maintenance and debugging, indirectly improving production efficiency, which is crucial for ensuring the long-term stable operation of the device and providing users with a more precise and safe operating environment. In other embodiments, there is only one limiting protrusion and it is provided on the side of the sliding block facing the pressing direction of the pressing head (not shown in the figure) to avoid excessive reverse movement of the sliding block when the pressing head is pressed in. Optionally, there are multiple gripping and releasing components 230, which are evenly distributed on the outer periphery of the pressing head 220 to ensure that the magnetic attraction fixing force on the first metal bushing 300 is evenly distributed throughout the entire outer periphery, thereby further improving the installation stability of the first metal bushing 300.

[0038] In some embodiments, the gripping and releasing component is reset by an elastic element (not shown in the figure). For example, one end of a reset spring is fixedly connected to a sliding block, and the other end is fixedly connected to a positioning seat. Thus, after the first metal bushing is pressed in and the workpiece no longer pushes against the sliding block, the reset spring pulls the sliding block towards the side of the positioning seat to reset the gripping and releasing component. In some embodiments, the gripping and releasing component 230 is reset by gravity. For example, the gripping and releasing component 230 is arranged vertically. When the first metal bushing 300 is pressed in, the workpiece pushes against the sliding block 231 and moves upward. Then, after the first metal bushing 300 is pressed in and the workpiece no longer pushes against the sliding block 231, the sliding block 231 moves downward under gravity to reset the gripping and releasing component 230. In some embodiments of this utility model, such as... Figure 2 , Figure 3 and Figure 5As shown, a reset pressure ring 250 is provided around the outer periphery of the pressing head 220. The reset pressure ring 250 is located on the side of the gripping and releasing component 230 away from the positioning seat 110. When the drive cylinder 210 is connected and drives the pressing head 220 to move linearly towards the side away from the positioning seat 110, the reset pressure ring 250 is relatively fixed to the frame 100 and can push the gripping and releasing component 230 to reset, so as to magnetically fix the next first metal bushing 300. This mechanism makes full use of the retraction action of the drive cylinder 210, maintains the continuity and efficiency of the entire assembly process, and ensures that the gripping and releasing component 230 can return to the initial position in a timely and accurate manner after each pressing, ready for the next operation. In this regard, the presence of the reset pressure ring 250 simplifies the operation process, reduces the need for manual intervention, and improves the degree of automation and work efficiency.

[0039] It should be noted that the reset ring 250 being fixed relative to the frame 100 means that after the drive cylinder 210 retracts, the reset ring 250 is in a constant position relative to the frame 100. For example, the reset ring 250 can be rotatably sleeved on the drive shaft of the drive cylinder 210, moving downwards together with the pressing head 220 as it is pushed out and pressed down. Then, after retraction, one end of the reset ring 250 abuts against the frame 100, and the other end abuts against the sliding block 231 for reset. As another example, the frame 100 may be fixedly equipped with a linear bearing, and the reset ring 250 may be directly fixed to the lower end face of the linear bearing. Alternatively, after the pressing head 220 retracts, one end of the reset ring 250 abuts against the lower end face of the linear bearing, and the other end abuts against the sliding block 231 for reset.

[0040] Refer to Figure 3 In some embodiments of this utility model, the press-fit head 220 includes a guide sleeve 221, the end of which is provided with a first guide surface 2211 to guide the insertion of the first metal bushing 300, reducing the resistance of the first metal bushing 300 during insertion, preventing jamming due to misalignment, and improving the success rate and speed of assembly. Furthermore, the introduction of the first guide surface 2211 provides excellent guidance for the first metal bushing 300, ensuring that the first metal bushing 300 can smoothly enter the workpiece, thereby improving assembly accuracy and efficiency. This is of great significance for ensuring high-quality product output and reducing scrap rates.

[0041] In some embodiments of this utility model, such as Figures 2 to 4As shown, the positioning seat 110 is located below the pressing head 220, and the center line of the positioning seat 110 coincides with the center line of the pressing head 220. This center line alignment ensures that the positioning point of the workpiece and the pressing point are on the same straight line, effectively reducing quality problems caused by positional deviations and improving the accuracy of the assembly of the first metal bushing 300. In some embodiments, in addition to installing a single bushing, the positioning seat 110 can also be used to mount a second metal bushing 400. The workpiece is aligned and installed with the second metal bushing 400, and simultaneously positioned on the frame 100. Then, the drive cylinder 210 is connected to and drives the pressing head 220 to move vertically. Using a single power drive, the pressing assembly of the first metal bushing 300 and the second metal bushing 400 is completed at the opposite positions of the workpiece. This simplifies the operation process, improves the stability of the pressing process, and is particularly suitable for applications requiring high-precision pressing, such as the automotive manufacturing industry. For example, the workpiece is a bridge housing, and metal bushings need to be mounted on both sides of the bridge housing. Similar to the guiding function of the first metal bushing 300, refer to... Figure 4 In some embodiments of this utility model, the positioning seat 110 is equipped with a guide member 111, and the guide member 111 is provided with a second guide surface 1111 to guide the insertion of the second metal bushing 400, thereby optimizing the manual loading operation of the second metal bushing 400. The presence of the second guide surface 1111 reduces the friction of the second metal bushing 400 during insertion, preventing possible damage and ensuring that the second metal bushing 400 can be smoothly and accurately placed into the positioning seat 110. This is very important for improving the success rate of assembly and ensuring product quality.

[0042] Optionally, the drive cylinder 210 is a hydraulic cylinder, and the frame 100 is equipped with an electric pump 120, which is connected to and drives the hydraulic cylinder. It should be noted that the design of choosing a hydraulic cylinder as the drive source and equipping it with an electric pump 120 is not only because the hydraulic system can provide powerful output and stable pressing force, suitable for applications requiring high precision and strong pressing, but also because the application of the electric pump 120 simplifies the system structure, reduces costs, and ensures stability and reliability during long-term operation. It is particularly suitable for automated production line environments requiring frequent starts and stops, providing good response speed and control precision, meeting the stringent requirements of modern industrial production.

[0043] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An automatic bushing pressing device, characterized in that, include: The frame is fixedly equipped with a positioning seat, which is capable of positioning the workpiece; A pressing assembly is connected to the frame. The pressing assembly includes a drive cylinder, a pressing head, and a gripping and releasing component. The pressing head is used to install a first metal bushing. The gripping and releasing component is located on the outside of the pressing head and can magnetically fix the first metal bushing. The drive cylinder is connected to and drives the pressing head to move linearly along the side facing the positioning seat to press the first metal bushing into the workpiece. The gripping and releasing component is slidably disposed on the pressing head along the movement direction of the pressing head; when the first metal bushing is pressed in, the workpiece can push against the gripping and releasing component to disengage from the first metal bushing.

2. The automatic bushing pressing device according to claim 1, characterized in that: The gripping and releasing component includes a sliding block and a magnet. The magnet is mounted on the side of the sliding block facing the center of the pressing head and on the side of the sliding block facing the positioning seat.

3. The automatic bushing pressing device according to claim 2, characterized in that: The outer wall of the pressing head is fixedly provided with a limiting block, and the sliding block is provided with limiting protrusions at both ends along the movement direction of the pressing head. The limiting block is placed between the two limiting protrusions to limit the displacement area of ​​the sliding block.

4. The automatic bushing pressing device according to any one of claims 1 to 3, characterized in that: There are multiple gripping and releasing components, which are evenly distributed on the outer periphery of the pressing head.

5. The automatic bushing pressing device according to claim 4, characterized in that: A reset pressure ring is provided around the outer periphery of the pressing head. The reset pressure ring is located on the side of the gripping and releasing component away from the positioning seat. When the drive cylinder is connected and drives the pressing head to move linearly towards the side away from the positioning seat, the reset pressure ring is fixed relative to the frame and can push the gripping and releasing component to reset, so as to magnetically fix the next first metal bushing.

6. The automatic bushing pressing device according to claim 1, characterized in that: The press-fit head includes a guide sleeve, and the end of the guide sleeve is provided with a first guide surface to guide the insertion of the first metal bushing.

7. The automatic bushing pressing device according to claim 1, characterized in that: The positioning seat is located below the pressing head, and the center line of the positioning seat coincides with the center line of the pressing head.

8. The automatic bushing pressing device according to claim 1 or 7, characterized in that: The positioning seat is used to install the second metal bushing, and the drive cylinder is connected to and drives the pressing head to move in the vertical direction.

9. The automatic bushing pressing device according to claim 8, characterized in that: The positioning seat is equipped with a guide member, which has a second guide surface to guide the insertion of the second metal bushing.

10. The automatic bushing pressing device according to claim 1, characterized in that: The drive cylinder is a hydraulic cylinder, and the frame is equipped with an electric pump, which is connected to and drives the hydraulic cylinder.

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