Spring pin press fitting device

Abstract

The utility model relates to spring pin press -mounting technical field, concretely relates to a kind of spring pin press -mounting equipment, including mainframe, and the mainframe is provided with press -mounting mechanism, positioning mechanism and spring pin feeding mechanism, and the press -mounting mechanism includes: press -mounting support drive unit, provides overall structure support and power output;Press head unit, connected to the output end of the press -mounting support drive unit, including press -mounting head, and the press -mounting head has the press -mounting end for press -mounting spring pin;Limit unit, connected with the press -mounting support drive unit and the press head unit, provides orientation and reset action for the press -mounting work movement of the press head unit. At least one product detection unit is integrally arranged in the press head unit, and the product detection unit is used to detect product state. Provide a kind of spring pin press -mounting equipment to solve the problem of low reliability of spring pin press -mounting production in prior art.

Description

Technical Field

[0001] This utility model relates to the field of spring pin press-fit technology, and in particular to a spring pin press-fit device. Background Technology

[0002] Spring pins, as common connecting and positioning components, are widely used in the automotive, electronics, and machinery industries. Their assembly quality directly affects product performance and reliability. Currently, spring pin press-fitting largely relies on manual operation or traditional semi-automatic equipment. Manual press-fitting methods have drawbacks such as high labor intensity, low production efficiency, and difficulty in precisely controlling the pressing force, easily leading to quality problems such as excessively deep, shallow, or misaligned press-fitting, resulting in poor product consistency.

[0003] While some existing automated pressing equipment achieves automated loading and unloading, its pressing heads are mostly rigidly connected, making them unable to adapt to minute positional deviations between the workpiece and the pressing head. This can easily lead to pressing failures or even damage to the workpiece due to misalignment. Furthermore, existing equipment generally lacks real-time monitoring and quality traceability functions for key parameters (such as pressure and displacement) in the pressing process. Once defective products appear, it is difficult to quickly locate the cause and trace the problem, failing to meet the high-quality and high-reliability requirements of modern production. Utility Model Content

[0004] The purpose of this invention is to provide a spring pin press-fitting device to solve the problem of low reliability in the production of spring pin press-fitting devices in the prior art.

[0005] The technical solution of this utility model is: a spring pin pressing device, comprising a main frame, on which a pressing mechanism, a positioning mechanism, and a spring pin feeding mechanism are provided, the pressing mechanism comprising: The press-fit support drive unit provides overall structural support and power output; A pressure head unit, connected to the output end of the pressure support drive unit, includes a pressure head, and the pressure head has a pressure end for pressing a spring pin; The limiting unit is connected to the press-fit support drive unit and the press head unit, and provides guidance and reset functions for the press-fit working movement of the press head unit.

[0006] Preferably, the pressure head unit integrates at least one product detection unit, which is used to detect the product status.

[0007] Preferably, the pressing head unit further includes a protective shell, the pressing head is floatingly inserted inside the protective shell, and a pressure sensor is provided on the force transmission path of the pressing head.

[0008] Preferably, the pressing head is connected to the inner wall of the protective shell through a radially arranged elastic element to achieve floating alignment in a plane perpendicular to the pressing direction.

[0009] Preferably, a displacement sensor is provided on one side of the protective shell, with its detection end pointing towards the pressing head, for real-time detection of pressing displacement.

[0010] Preferably, the press-fitting support drive unit includes a press-fitting frame fixedly mounted on the main frame, a drive power source is mounted on the press-fitting frame, and the output end of the drive power source is connected to a press-fitting connecting plate.

[0011] Preferably, the limiting unit includes at least one guide shaft that slides with the press-fitting connecting plate, and a guide fixing plate is connected to one end of the guide shaft near the press head unit. A reset spring for providing reset force is provided on at least one of the guide shafts.

[0012] Preferably, the pressing mechanism is located directly above the positioning mechanism, the positioning mechanism is used to install and position the workpiece to be pressed with the spring pin, and the spring pin feeding mechanism is configured to feed the pressing mechanism with material.

[0013] Preferably, the main frame is also equipped with a scanning device for scanning workpiece information and binding it with pressing data.

[0014] Preferably, the main frame is provided with a safety and interactive operation unit, which includes a safety light curtain and maintenance door for area protection, a pressing display screen for displaying pressing data, a human-machine interface and operation buttons, and an electrical control box is also provided inside the main frame.

[0015] Compared with the prior art, the advantages of this utility model are: (1) By setting a floating centering structure in the pressure head unit, it can automatically correct the slight deviation with the workpiece hole position, ensuring accurate pressing posture, realizing flexible pressing, effectively avoiding problems such as pressure head jamming and workpiece damage caused by position deviation, and significantly improving the operational reliability and yield of the equipment.

[0016] (2) By integrating pressure sensor and displacement sensor in the pressure head unit, a "pressure-displacement" monitoring curve is generated and compared with the preset standard process, so as to make online qualification judgment on key quality indicators such as pressing force, displacement, and yield point, and can judge the pressing quality online.

[0017] (3) By integrating the scanning device, the unique identification code of each workpiece is bound and stored with all the data in the pressing process (including the "pressure-displacement" curve, whether it is qualified or not), and a complete quality traceability file is constructed to facilitate subsequent traceability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the spring pin press-fitting device described in this utility model; Figure 2 This is a schematic diagram of the overall structure of the servo press assembly described in this utility model; Figure 3 This is a cross-sectional view of the overall structure of the servo press assembly described in this utility model; Figure 4 This utility model Figure 3 Enlarged view of region A in the middle; The components include: 1. Main frame; 2. Pressing mechanism; 21. Pressing support drive unit; 211. Drive power source; 212. Pressing frame; 213. Pressing connecting plate; 22. Pressing head unit; 221. Pressure sensor; 222. Pressing head; 223. Protective shell; 224. Displacement sensor; 23. Limiting unit; 231. Guide shaft; 232. Guide fixing plate; 233. Return spring; 3. Positioning mechanism; 4. Electrical control box; 5. Safety light curtain; 6. Pressing display screen; 7. Human-machine interface; 8. Operation buttons; 9. Maintenance door; 10. Scanning device. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1 to 4 As shown, a spring pin pressing device includes a main frame 1, on which a pressing mechanism 2, a positioning mechanism 3, a spring pin feeding mechanism, a scanning device 10, a safety and interactive operation unit, and an electrical control box 4 are installed.

[0020] The pressing mechanism 2 is located directly above the positioning mechanism 3. The positioning mechanism 3 is used to install and position the workpiece to be pressed with the spring pin. The spring pin feeding mechanism is configured to feed the workpiece to the pressing mechanism 2. The scanning device 10 is used to scan the workpiece information and bind it to the pressing data. The safety and interactive operation unit includes a safety light curtain 5 and a maintenance door 9 for area protection, a pressing display screen 6 for displaying pressing data, a human-machine interface 7, and operation buttons 8. The electrical control box 4 is used to install the equipment's control system and electrical components.

[0021] like Figure 2 As shown, the pressing mechanism 2 includes a pressing support drive unit 21, a pressing head unit 22, and a limiting unit 23.

[0022] like Figure 3As shown, the press-fitting support drive unit 21 is used to provide overall structural support and power output. It includes a press-fitting frame 212 fixedly mounted on the main frame 1, a drive power source 211 mounted on the press-fitting frame 212, and a press-fitting connecting plate 213 connected to the output end of the drive power source 211.

[0023] As a preferred embodiment, the drive power source 211 is a servo electric cylinder capable of precise control of pressing speed, position, and pressure. The output end of the drive power source 211 is connected to a pressing link plate 213 via a flange for transmitting power downwards and installing other components (such as the press head unit 22).

[0024] like Figure 4 As shown, the pressure head unit 22 is connected to the output end of the pressure support drive unit 21, and includes a pressure head 222, which has a pressure end for pressing the spring pin. The pressure head unit 22 integrates at least one product detection unit (such as a detection optical fiber) to detect the state of the spring pin, such as its presence or absence, orientation, etc.; if an abnormality is detected, the equipment will stop and issue an alarm.

[0025] The pressing head unit 22 also includes a protective shell 223. The pressing head 222 floats inside the protective shell 223, and a pressure sensor 221 is installed on the force transmission path of the pressing head 222. The pressure sensor 221 is used to collect pressure change data in real time throughout the pressing process.

[0026] The press-fit head 222 is connected to the inner wall of the protective shell 223 via radially arranged elastic elements (including but not limited to polyurethane elastic columns, springs, and other elastic elements) to achieve floating alignment in a plane perpendicular to the press-fit direction. This allows the press-fit head 222 to have a certain floating stroke perpendicular to the press-fit direction. When the press-fit head 222 presses down and contacts the spring pin, if there is a slight positional deviation, this floating structure can guide the press-fit head 222 to automatically align with the center of the spring pin, achieving flexible alignment and effectively avoiding the press-fit misalignment, jamming, or workpiece damage caused by positional deviations in traditional rigid press-fitting methods.

[0027] A displacement sensor 224 is installed on one side of the protective shell 223, with its detection end pointing towards the pressing head 222, for real-time detection of pressing displacement. During the pressing process, the pressure sensor 221 and the displacement sensor 224 collect data in real time, generate a "pressure-displacement" monitoring curve, and compare it with the preset standard process to make an online qualification judgment on key quality indicators such as pressing force, displacement, and yield point.

[0028] like Figure 3 As shown, the limiting unit 23 is connected to the pressing support drive unit 21 and the pressing head unit 22, providing guidance and reset for the pressing operation of the pressing head unit 22.

[0029] The limiting unit 23 includes at least one guide shaft 231 that slides with the press-fit connecting plate 213. One end of the guide shaft 231 near the press head unit 22 is connected to a guide fixing plate 232. At least one guide shaft 231 is provided with a reset spring 233 for providing reset force.

[0030] As a preferred embodiment, four evenly distributed guide shafts 231 are used, and a return spring 233 is provided on two non-adjacent guide shafts 231. The return spring 233 is fitted onto the guide shaft 231, and its lower end acts on the guide fixing plate 232, while its upper end acts on the press-fit connecting plate 213, providing a restoring force and buffer for the return stroke of the pressure head unit 22.

[0031] Working principle: First, the workpiece is placed on the positioning mechanism 3, and the scanning device 10 scans its identification code and creates a quality traceability record bound to the code. Then, the spring pin feeding mechanism automatically delivers the spring pin to the pressing position of the pressing head unit 22 (for example, a pneumatic blowing device can be used to blow the spring pin from the feeding port through an internal channel to the pressing position). Next, the drive power source 211 drives the pressing head 222 through the pressing connecting plate 213 to press the spring pin into the workpiece. During the pressing process, the floating alignment structure of the pressing head unit 22 automatically corrects minor deviations from the workpiece hole position, ensuring accurate pressing posture. Simultaneously, the pressure sensor 221 and displacement sensor 224 detect the pressing state in real time and compare it with a preset standard to determine online whether the pressing quality is qualified. After pressing is completed, the pressing head unit 22 smoothly resets with the assistance of the reset spring 233 of the limit unit 23, thus completing the entire spring pin pressing operation.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A spring pin pressing device, comprising a main frame (1), wherein the main frame (1) is provided with a pressing mechanism (2), a positioning mechanism (3), and a spring pin feeding mechanism, characterized in that, The pressing mechanism (2) includes: The press-fit support drive unit (21) provides overall structural support and power output; The pressure head unit (22) is connected to the output end of the pressure support drive unit (21), and includes a pressure head (222), wherein the pressure head (222) has a pressure end for pressing the spring pin; The limiting unit (23) is connected to the press-fitting support drive unit (21) and the press head unit (22), and provides guidance and reset function for the press-fitting working movement of the press head unit (22).

2. The spring pin press-fitting device according to claim 1, characterized in that: The pressure head unit (22) is equipped with at least one product detection unit, which is used to detect the product status.

3. The spring pin press-fitting device according to claim 2, characterized in that: The pressure head unit (22) also includes a protective shell (223), the pressure head (222) is floating inside the protective shell (223), and a pressure sensor (221) is provided on the force transmission path of the pressure head (222).

4. The spring pin press-fitting device according to claim 3, characterized in that: The pressing head (222) is connected to the inner wall of the protective shell (223) through a radially arranged elastic element to achieve floating alignment in a plane perpendicular to the pressing direction.

5. A spring pin press-fitting device according to claim 4, characterized in that: A displacement sensor (224) is provided on one side of the protective shell (223), with its detection end pointing towards the pressing head (222), for real-time detection of pressing displacement.

6. The spring pin press-fitting device according to claim 1, characterized in that: The press-fit support drive unit (21) includes a press-fit frame (212) fixedly mounted on the main frame (1), a drive power source (211) is mounted on the press-fit frame (212), and the output end of the drive power source (211) is connected to a press-fit link plate (213).

7. A spring pin press-fitting device according to claim 6, characterized in that: The limiting unit (23) includes at least one guide shaft (231) that slides with the press-fit connecting plate (213). One end of the guide shaft (231) near the press head unit (22) is connected to a guide fixing plate (232). At least one of the guide shafts (231) is provided with a reset spring (233) for providing reset force.

8. The spring pin press-fitting device according to claim 1, characterized in that: The pressing mechanism (2) is located directly above the positioning mechanism (3). The positioning mechanism (3) is used to install and position the workpiece to be pressed with the spring pin. The spring pin feeding mechanism is configured to feed the pressing mechanism (2) for pressing.

9. The spring pin press-fitting device according to claim 1, characterized in that: The main frame (1) is also equipped with a scanning device (10) for scanning workpiece information and binding it with pressing data.

10. A spring pin press-fitting device according to claim 1, characterized in that: The main frame (1) is equipped with a safety and interactive operation unit, which includes a safety light curtain (5) and maintenance door (9) for area protection, a pressing display screen (6) for displaying pressing data, a human-machine interface (7) and operation buttons (8), and an electrical control box (4) is also provided inside the main frame (1).

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