Shielding cover pressure-maintaining pressure head device

Abstract

A shielding cover pressure-maintaining pressure head device comprises a mounting frame, a pressure-maintaining drive, a lifting plate, a pressing plate and a magnetic attraction seat. The pressure maintaining drive is connected with the lifting plate through a floating connector, four guide columns with buffer springs are symmetrically arranged below the pressing plate to form an elastic leveling mechanism, and an anti-falling cap is arranged at the top of the pressing plate. The lower portion of the pressing plate is detachably connected with a pressure maintaining head through a magnetic attraction base, and rapid remodeling is achieved. A replaceable bulb column is arranged in the center of the lifting plate, is externally provided with a wrench clamping surface and a radial through hole to facilitate disassembly and assembly, and cooperates with a guide column to ensure uniform pressure distribution; a pressure sensor is arranged between the floating connector and the pressure maintaining drive to achieve closed-loop control, and the lifting stability of the side edge of the mounting frame is enhanced through a sliding rail and sliding groove structure. According to the utility model, the modularized magnetic attraction design is adopted to realize rapid remodeling, the flatness is controlled to be stable through dynamic pressure compensation, the yield is improved, the device is particularly suitable for shielding cover assembly of precise electronic components, and the technical problems of low precision and poor efficiency of the traditional pressure maintaining process are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of electrical device assembly technology, and in particular to a shielding cover pressure-holding head device. Background Technology

[0002] In the manufacturing process of electronic devices, the assembly of electromagnetic shielding covers is one of the key steps. The shielding covers are typically fixed to the PCB or metal frame by adhesive or welding to ensure electromagnetic compatibility and prevent signal interference. During assembly, the pressure-holding process of the shielding covers directly affects their sealing performance, flatness, and long-term reliability.

[0003] Traditional shielding cover pressing devices typically use a rigid pressure head to directly press down, which has the following technical drawbacks:

[0004] Uneven pressure leads to deformation: The rigid pressure head has difficulty adapting to the slight unevenness of the shielding cover during the pressing process, which can easily cause local stress concentration, resulting in deformation of the shielding cover or uneven thickness of the adhesive layer, thus affecting the electromagnetic shielding effect.

[0005] Insufficient positioning accuracy: Ordinary pressing mechanisms lack a high-precision guiding system, which can easily lead to misalignment due to mechanical vibration or assembly errors on high-speed production lines, resulting in an increase in product defect rate.

[0006] Low changeover efficiency: Different models of shielding covers require different pressure heads. Traditional structures rely on bolt fixing, which is time-consuming and difficult to adapt to the needs of multi-variety, small-batch production.

[0007] Lack of pressure monitoring and buffering: Existing equipment mostly uses cylinders or motors to apply pressure directly, lacking real-time pressure feedback and buffering mechanisms, which can easily lead to poor bonding or damage to the shielding cover due to overpressure or underpressure.

[0008] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a shielding cover pressure head device to solve the above problems.

[0009] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solution of this utility model and facilitating the understanding of those skilled in the art. It should not be assumed that the above content is known to those skilled in the art simply because it has been described in the background section of this utility model. Utility Model Content

[0010] To overcome the shortcomings of the prior art, the present invention aims to disclose a shielding cover pressure head device to meet the requirements of modern electronic manufacturing for high yield, high efficiency and high consistency.

[0011] This utility model discloses a shielding cover pressure-holding head device, including a mounting frame. A pressure-holding drive is provided at the upper end of the mounting frame along the vertical direction. The moving end of the pressure-holding drive is detachably connected to a lifting plate. A pressure plate is provided below the lifting plate. At least two guide posts are provided on the lower side of the pressure plate along the vertical direction. The guide posts pass through the lifting plate and are slidably connected to it. A cap is provided at the top of the guide posts to prevent them from detaching from the lifting plate. A buffer spring is sleeved on the outer periphery of the guide posts. The two ends of the buffer spring abut against the lifting plate and the pressure plate respectively. A magnetic seat is provided below the pressure plate. The magnetic seat is detachably connected to the pressure-holding head by magnetic attraction.

[0012] Preferred technical solution: There are four guide columns, which are arranged symmetrically in an array on the pressure plate.

[0013] Preferred technical solution: A ball head column is detachably provided at the lower center of the lifting plate. The ball head column is aligned with the geometric center of the four guide columns. Different ball head columns can be replaced according to different pressure requirements during use. The ball head column is used to push the pressure plate to ensure the stability of the pressure.

[0014] Preferred technical solution: The outer periphery of the ball head is symmetrically provided with a wrench clamping surface, and the wrench clamping surface is provided with a through hole that penetrates the radial direction of the ball head, so as to facilitate the assembly and disassembly of the ball head.

[0015] Preferred technical solution: The pressure holding drive and the lifting plate are connected by a floating joint.

[0016] Preferred technical solution: A pressure sensor is also provided between the floating joint and the pressure holding drive.

[0017] Preferred technical solution: A connecting block is detachably provided on one side of the mounting frame, and a sliding groove is provided on the connecting block along the vertical direction. A sliding rail is provided on the side of the lifting plate corresponding to the connecting block, and the sliding rail and the sliding groove are slidably connected along the vertical direction.

[0018] Preferred technical solution: The mounting bracket is provided with a mounting plate along the horizontal direction, and the mounting plate is provided with U-shaped holes.

[0019] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0020] 1) The pressure-holding head can be replaced in seconds via a magnetic base, adapting to shielding covers of different sizes.

[0021] 2) The design adopts a replaceable ball head column, which makes point contact with the pressure plate and can adaptively fine-tune the flatness.

[0022] 3) The design of the wrench clamping surface and radial through hole of the ball head column facilitates quick assembly and disassembly.

[0023] 4) The guide post and buffer spring are combined with the floating joint and pressure sensor to ensure uniform and stable pressure transmission, which is suitable for the high-precision pressure holding requirements of precision electronic components. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a shielding cover pressure-holding head device according to the present invention;

[0026] Figure 2 This is a schematic diagram of the pressure holding drive part in this utility model;

[0027] Figure 3 This is a schematic diagram of the pressure head part in this utility model.

[0028] In the attached diagrams above, 1 is the mounting bracket; 2 is the pressure holding drive; 3 is the lifting plate; 4 is the pressure plate; 5 is the guide post; 6 is the buffer spring; 7 is the magnetic base; 8 is the pressure holding head; 9 is the ball head post; 9a is the wrench clamping surface; 9b is the through hole; 10 is the floating joint; 11 is the pressure sensor; 12 is the connecting block; 12a is the slide groove; 13 is the slide rail; 14 is the mounting plate; and 14a is the U-shaped hole. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the description of embodiments of this application herein. Furthermore, the terms "comprising" and "having," and their synonyms, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0033] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," "fitting," and "fitting" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Similarly, "fitting" can mean completely or partially fitted. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Example:

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses a shielding cover pressure-holding head device, comprising:

[0037] Mounting bracket 1: As the main support structure, a pressure holding drive 2 is provided at the top. A connecting block 12 is detachably provided on one side of the mounting bracket 1. A sliding groove 12a is provided on the connecting block 12 along the vertical direction. The side is connected to the sliding groove 12a by a sliding rail 13 to improve the lifting stability.

[0038] Pressure holding drive 2: A servo motor or cylinder is used to drive the pressing action by connecting the lifting plate 3 detachably through the floating joint 10.

[0039] The lifting plate 3 and the pressure plate 4 are elastically connected by four guide posts 5 with buffer springs 6, forming a dynamic leveling mechanism. A slide rail 13 is provided on the side corresponding to the lifting plate 3 and the connecting block 12, and the slide rail 13 is slidably connected to the slide groove 12a in the vertical direction. It should be noted that the top of the guide post 5 is provided with a cap to prevent it from detaching from the lifting plate 3.

[0040] Magnetic base 7 and pressure holding head 8: The magnetic base 7 is located below the pressure plate 4, and the pressure holding head 8 can be replaced in seconds through magnetic force.

[0041] Ball head column 9: Located at the center of the lifting plate 3, it can be replaced with ball heads of different sizes and adaptively adjusts its flatness by contacting the top pressure plate 4. It should be noted that the ball head column 9 is aligned with the geometric center of the four guide columns 5.

[0042] Pressure sensor 11: Integrated between floating joint 10 and pressure holding drive 2, it monitors pressure in real time and feeds it back to the control system to achieve closed-loop regulation.

[0043] The mounting frame 1, which serves as the main support structure, has a pressure-holding drive 2 vertically positioned at its upper end. The pressure-holding drive 2 uses a servo motor or cylinder and is connected to the lifting plate (3) via a floating joint (10) to drive the pressing action.

[0044] The moving end of the pressure holding drive 2 is detachably connected to the lifting plate 3. A pressure plate 4 is provided below the lifting plate 3. At least two guide posts 5 are provided on the lower side of the pressure plate 4 in the vertical direction. The guide posts 5 pass through the lifting plate 3 and are slidably connected to it. A cap is provided on the top of the guide post 5 to prevent it from detaching from the lifting plate 3. A buffer spring 6 is sleeved on the outer periphery of the guide post 5. The two ends of the buffer spring 6 abut against the lifting plate 3 and the pressure plate 4 respectively. A magnetic seat 7 is provided below the pressure plate 4. The magnetic seat 7 is detachably connected to the pressure holding head 8 by magnetic attraction.

[0045] like Figure 1 , Figure 2 and Figure 3 As shown, the ball head 9 has symmetrically arranged wrench clamping surfaces 9a on its outer periphery, and a through hole 9b is provided on the wrench clamping surface 9a that penetrates the ball head 9 radially. During disassembly and assembly, the ball head 9 can be screwed in and out by clamping the wrench clamping surface 9a with a wrench, or by inserting a metal rod into the through hole 9b to rotate the ball head 9, thereby improving disassembly and assembly efficiency.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, a mounting plate 14 is provided on the mounting bracket 1 along the horizontal direction, and the mounting plate 14 is provided with a U-shaped hole 14a. It can be quickly installed and removed from the pressure holding equipment through the U-shaped hole 14a.

[0047] refer to Figure 1 , Figure 2 and Figure 3As shown, the usage method and principle of this utility model are described below:

[0048] Mounting bracket fixation: The device is fixed to the worktable through the U-shaped hole 14a of the mounting plate 14.

[0049] Pressure holding head adapter: Select the matching pressure holding head 8 according to the shielding cover model, and fix it by magnetic adsorption seat 7.

[0050] Ball head replacement: Use a wrench to hold the clamping surface 9a of the ball head 9, or use a metal rod inserted into the through hole 9b to apply force and rotate to replace the required ball head 9.

[0051] Pressure parameter setting: Input the target pressure value into the control system, and the pressure sensor 11 will provide real-time feedback signal to adjust the output of the pressure holding drive 2 to the set value.

[0052] Initial positioning: Place the shielding cover at the designated position on the PCB, and the device calibrates the pressing point using a vision system or mechanical positioning.

[0053] During the pressing stage: the pressure holding drive 2 pushes the lifting plate 3 to move down, the pressure plate 4 applies pressure evenly through the guide column 5 and the buffer spring 6, and the ball head column 9 pushes the pressure plate 4 to finely adjust the flatness.

[0054] Pressure maintenance: Pressure sensor 11 continuously monitors the pressure and dynamically adjusts the output of pressure maintenance drive 2.

[0055] Reset and Changeover: After pressing is completed, the pressure holding drive is reset, and the next type of pressure holding head 8 is replaced to enter the next cycle.

[0056] This invention significantly improves the precision and efficiency of shielding cover pressing through modular magnetic suction design, dynamic leveling mechanism and closed-loop pressure control, and solves the technical problems of uneven pressure and cumbersome changeover in traditional processes. It can be widely used in precision assembly of smartphones, communication equipment, automotive electronics and other fields.

[0057] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shielding cover pressure-holding head device, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is provided with a pressure holding drive (2) in the vertical direction at the upper end. The moving end of the pressure holding drive (2) is detachably connected to the lifting plate (3). A pressure plate (4) is provided below the lifting plate (3). At least two guide posts (5) are provided on the lower side of the pressure plate (4) in the vertical direction. The guide posts (5) pass through the lifting plate (3) and are slidably connected to it. A cap is provided on the top of the guide posts (5) to prevent them from detaching from the lifting plate (3). A buffer spring (6) is sleeved on the outer periphery of the guide posts (5). The two ends of the buffer spring (6) abut against the lifting plate (3) and the pressure plate (4) respectively. A magnetic seat (7) is provided below the pressure plate (4). The magnetic seat (7) is detachably connected to the pressure holding head (8) by magnetic attraction.

2. The shielding cover pressure-holding head device according to claim 1, characterized in that: There are four guide posts (5), and the four guide posts (5) are arranged symmetrically in an array on the pressure plate (4).

3. The shielding cover pressure-holding head device according to claim 2, characterized in that: The lower center of the lifting plate (3) is detachably provided with a ball head column (9), which is aligned with the geometric center of the distribution of the four guide columns (5).

4. The shielding cover pressure-holding head device according to claim 3, characterized in that: The ball head (9) is symmetrically provided with a wrench clamping surface (9a) on its outer periphery, and the wrench clamping surface (9a) is provided with a through hole (9b) that penetrates the ball head (9) radially.

5. The shielding cover pressure-holding head device according to claim 1, characterized in that: The pressure holding drive (2) and the lifting plate (3) are connected by a floating joint (10).

6. The shielding cover pressure-holding head device according to claim 5, characterized in that: A pressure sensor (11) is also provided between the floating joint (10) and the pressure holding drive (2).

7. The shielding cover pressure-holding head device according to claim 1, characterized in that: The mounting bracket (1) has a detachable connecting block (12) on one side. The connecting block (12) has a vertical groove (12a) on it. The lifting plate (3) has a sliding rail (13) on the side corresponding to the connecting block (12). The sliding rail (13) and the sliding groove (12a) are slidably connected in the vertical direction.

8. The shielding cover pressure-holding head device according to claim 1, characterized in that: The mounting bracket (1) has a mounting plate (14) along the horizontal direction, and the mounting plate (14) has a U-shaped hole (14a).

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