A screw-driving device for mobile phone back cover

Abstract

This utility model relates to the field of mobile phone back cover processing technology, and in particular to a mobile phone back cover screw-driving device. It includes a base plate for mounting, on which a first electric screw, driving an electric screwdriver to move left and right, is mounted via a column. A second electric screw, driving the electric screwdriver to move up and down, is mounted on a slider of the first electric screw. A third electric screw, driving a mold base to move back and forth, is located in the middle of the base plate. The mobile phone to be screwed is placed inside the mold base. This mobile phone back cover screw-driving device mainly consists of a base plate, a column, an electric screwdriver, and three electric screws. The base plate serves as a basic support, and the first electric screw, fixed via the column, controls the left and right movement of the electric screwdriver. The second electric screw, mounted on the slider of the first electric screw, drives the electric screwdriver to move up and down. The third electric screw, located in the middle of the base plate, drives the mold base to move back and forth. The mold base is used to hold the mobile phone to be screwed. All components work together to achieve precise positioning and screw fastening.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone back cover processing technology, and in particular to a screw-driving device for mobile phone back covers. Background Technology

[0002] The back cover of a mobile phone is fixed to the phone body with screws. Most smartphones nowadays use screws at the back of the phone, but there is still a demand for phones for the elderly. The assembly method of phones for the elderly is different from that of smartphones. Their screws are installed directly on the back of the phone, which requires a separate screw-driving device.

[0003] Existing screw-driving mechanisms generally suffer from the following defects:

[0004] Insufficient multi-axis coordination: Most devices only use single-axis lead screw drive, which makes it difficult to synchronously control the three-dimensional spatial movement of the screwdriver, requiring repeated adjustments to the phone position and increasing process complexity;

[0005] Poor positioning stability: The mold base lacks a dynamic clamping mechanism, and the back cover of the mobile phone is prone to displacement due to vibration during the screwing process, which affects the assembly yield.

[0006] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a screw-on device for mobile phone back covers, making it more valuable for industrial use. Utility Model Content

[0007] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a screw-driving device for mobile phone back covers.

[0008] This utility model discloses a screw-driving device for a mobile phone back cover, including a base plate for installation. The base plate is equipped with a first electric screw that drives an electric screwdriver to move left and right via a column. A second electric screw that drives the electric screwdriver to move up and down is installed on the slider of the first electric screw. A third electric screw that drives a mold base to move back and forth is located in the middle of the base plate. The mobile phone that needs to be screwed is placed inside the mold base.

[0009] The mobile phone back cover screw-driving device mainly consists of a base plate, a column, an electric screwdriver, and three electric lead screws. The base plate serves as a basic support, and the first electric lead screw is fixed by the column to control the left and right movement of the electric screwdriver. The second electric lead screw is installed on the slider of the first electric lead screw, which drives the electric screwdriver to move up and down. The third electric lead screw is located in the middle of the base plate, which drives the mold base to move back and forth. The mold base is used to place the mobile phone to be screwed. All components work together to achieve precise positioning and screw fastening.

[0010] Furthermore, an adapter plate is installed on the slider of the second electric lead screw, and a lifting cylinder that drives the electric screwdriver to move up and down is installed on the adapter plate.

[0011] The slider of the second electric lead screw is connected to the adapter plate, and the lifting cylinder is fixed on the adapter plate. The lifting cylinder directly drives the electric screwdriver to perform vertical lifting action. The linkage control between the electric screwdriver and the second electric lead screw is realized through the transition installation of the adapter plate.

[0012] Furthermore, the adapter plate has end plates perpendicular to the adapter plate at both the top and bottom ends, and a guide rod is installed between the end plates. A lifting cylinder is fixed on the upper side of the end plate. The telescopic rod of the lifting cylinder passes through the end plate and is fixedly connected to the lifting block. The lifting block is sleeved on the guide rod, and an electric screwdriver is installed on the extension of the lower end of the lifting block.

[0013] The upper and lower ends of the adapter plate are vertically fixed to the end plates. Parallel guide rods are installed between the two end plates to form a guiding mechanism. The upper end plate is fixed with a lifting cylinder. Its telescopic rod passes through the end plate and connects to the lifting block. The lifting block achieves stable lifting and lowering movement through the guide rod. An electric screwdriver is installed at the bottom extension end of the lifting block, forming a lifting height compensation mechanism driven by the cylinder and guided by the guide rod.

[0014] Furthermore, the lower end of the adapter plate has an auxiliary block that extends forward, through which the rotating rod of the electric screwdriver passes.

[0015] An auxiliary block extends from the bottom of the adapter plate. The auxiliary block has through holes through which the rotating rod of the electric screwdriver passes. The positioning support of the auxiliary block ensures the radial stability of the electric screwdriver during operation.

[0016] Furthermore, the mold base includes a mounting plate that is fixedly connected to the third electric lead screw. Positioning molds are fixedly mounted on both sides of the mounting plate by bolts, and the upper end of the positioning mold is a recessed placement groove.

[0017] The mounting plate of the mold base is connected to the third electric lead screw, and the positioning mold is fixed by bolts on both sides. The top of the positioning mold is provided with a mounting groove for positioning.

[0018] Furthermore, a clamping cylinder is fixed to the middle of the mounting plate by bolts. The top of the clamping cylinder is fixedly connected to the pressure plate, and both ends of the pressure plate are located directly above the mounting slot.

[0019] The mounting plate is bolted in the middle to fix the clamping cylinder. The top of the clamping cylinder is connected to the pressure plate. The two ends of the pressure plate form a pressing station above the positioning mold's placement groove, which is used to clamp and position the mobile phone.

[0020] By means of the above-described solution, the present invention has at least the following advantages:

[0021] 1. Multi-axis collaborative precise positioning: Through the three-axis linkage of the first, second and third electric lead screws, the electric screwdriver can move in three dimensions with precision, eliminating the need to repeatedly adjust the position of the mobile phone and significantly improving screw-driving efficiency.

[0022] 2. Dynamic clamping for stable assembly: The mold base is equipped with a clamping cylinder-driven pressure plate, which can dynamically clamp the back cover of the mobile phone during the screwing process, effectively preventing vibration and displacement and improving the assembly yield.

[0023] 3. Structural optimization enhances reliability: The guiding mechanism that works in conjunction with the guide rod and the lifting cylinder, as well as the radial support of the auxiliary block for the electric screwdriver, ensure the stability and repeatability of the screw fastening process.

[0024] 4. Compatibility and expandability: The positioning mold has a replaceable and quick-release structure. The mounting slots on the top of different positioning molds can be adapted to different models of mobile phone back covers. The clamping mechanism can adjust the pressure as needed to meet the clamping and positioning requirements of mobile phones made of different materials.

[0025] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the electric screwdriver auxiliary lifting mechanism of this utility model;

[0029] Figure 3 This is a utility model Figure 1 A magnified view of a portion of the image;

[0030] In the diagram: 1. Base plate, 2. Column, 3. Electric screwdriver, 4. First electric lead screw, 5. Second electric lead screw, 6. Mold base, 7. Third electric lead screw, 8. Adapter plate, 9. Lifting cylinder, 10. End plate, 11. Guide rod, 12. Lifting block, 13. Auxiliary block, 14. Mounting plate, 15. Positioning mold, 16. Placement slot, 17. Clamping cylinder, 18. Pressure plate. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] See Figure 1 When this mobile phone back cover screw-on device is working, the mobile phone to be processed is first placed into the mold base 6. The third electric lead screw 7 drives the mold base 6 to move back and forth to the working position. The first electric lead screw 4 controls the left and right positioning of the electric screwdriver 3. The second electric lead screw 5 adjusts the lifting height of the electric screwdriver 3. The three axes work together to complete the screw fastening. Three-dimensional precise positioning is achieved through the first electric lead screw 4, the second electric lead screw 5 and the third electric lead screw 7. The integrated design of the mold base 6 simplifies the clamping process. The three-axis linkage avoids manual adjustment and improves assembly efficiency and consistency.

[0033] See Figure 2 The slider of the second electric lead screw 5 drives the adapter plate 8 to move. The lifting cylinder 9 on the adapter plate 8 directly drives the electric screwdriver 3 to perform vertical lifting action, realizing precise pressing and return when screwing. Through the structural design of the adapter plate 8 integrating the lifting cylinder 9, the transmission chain is simplified, and the response speed and positioning accuracy of the electric screwdriver 3 are improved. At the same time, the linear drive method of the lifting cylinder 9 avoids the backlash problem of traditional lead screw transmission, ensuring the stability and repeatability of the screw driving process. The lifting cylinder 9 drives the electric screwdriver 3 to move up and down, providing movement compensation for the screw driving depth, ensuring that the screwdriver 3 will not detach from the tail end of the screw during the screw driving process.

[0034] See Figure 2 The lifting cylinder 9 is fixed on the upper side of the end plate 10. Its telescopic rod passes through the end plate 10 and drives the lifting block 12 to slide up and down along the guide rod 11, thereby driving the electric screwdriver 3 to complete a precise lifting action. The guide rod 11 and the lifting block 12 ensure the stability of the vertical movement of the electric screwdriver 3. The rigid support structure of the end plate 10 effectively suppresses vibration. The direct drive method of the lifting cylinder 9 improves the response speed. The overall structure is compact and reliable, and is suitable for high-precision screw fastening operations.

[0035] As an extension of the adapter plate 8, the auxiliary block 13 provides radial positioning support for the rotating rod of the electric screwdriver 3 through its through hole, ensuring the concentricity of the screwdriver when rotating at high speed. The extension design of the auxiliary block 13 enhances the rigid support of the working end of the electric screwdriver 3, effectively suppressing radial vibration during processing. The through hole structure ensures both rotational freedom and provides a guiding function.

[0036] See Figure 3 The mold base 6 is rigidly connected to the third electric lead screw 7 through the mounting plate 14 to achieve overall displacement. The positioning molds 15 arranged symmetrically on both sides are fastened with bolts to form a stable support structure. The mounting groove 16 on the top provides a precise positioning reference for the workpiece. The bolt connection method facilitates the quick replacement of different models of positioning molds 15 and makes it easy to screw on different models of mobile phones. The overall structure combines positioning accuracy and ease of operation, and is suitable for automated processing scenarios with high repeatability.

[0037] The clamping cylinder 17 is centrally mounted on the mounting plate 14 by bolts. Its piston rod drives the pressure plate 18 to achieve vertical movement. The two ends of the pressure plate 18 are in a vertical correspondence with the placement groove 16 of the positioning mold 15, thus completing the bidirectional synchronous clamping of the workpiece. The centrally located layout of the clamping cylinder 17 ensures that the pressure plate 18 is subjected to uniform force. The spatial correspondence between the pressure plate 18 and the placement groove 16 ensures that the workpiece is accurately positioned under pressure. The cylinder drive provides a stable clamping force. The overall structure realizes the automated integration of workpiece positioning and clamping processes.

[0038] The working principle of this utility model is as follows:

[0039] When this mobile phone back cover screw-driving device is in operation, the stroke of each electric lead screw, lifting cylinder 9, and clamping cylinder 17 is set in advance according to the model of the phone to be screwed, and the number of rotations of the electric screwdriver 3 is also set via PLC.

[0040] During loading, the clamping cylinder 17 first moves the pressure plate 18 upward, and the mobile phone is manually placed in the placement slot 16 of the positioning mold 15. The clamping cylinder 17 then moves the pressure plate 18 downward to clamp the mobile phone. The third electric lead screw 7 moves the module 6 to the screw-driving position. At this time, the first electric lead screw 4 and the second electric lead screw 5 move the electric screwdriver 3 to the top of the first screw. The end of the electric screwdriver 3 has a strong magnet that can attract the screw. The screw is placed at the end of the electric screwdriver 3 using a loading mechanism [this mechanism is not the subject matter protected by this application] / manual loading method. Then the electric screwdriver 3 starts to rotate, and the lifting cylinder 9 descends at a uniform speed according to the screw-driving rate to ensure screw driving. To ensure the stability of the screw, the electric screwdriver 3 is an electric torque screwdriver with adjustable working torque. After the screw is screwed in, it automatically stops after reaching the preset torque value to protect the screw and the screw hole. When a screw is screwed in, the electric screwdriver 3 is reset under the drive of the lifting cylinder 9. The first electric screw 4 drives the electric screwdriver 3 to move horizontally, moving the electric screwdriver 3 to the position of another screw hole on the same axis. The screw is placed on the electric screwdriver 3, and the operation is repeated to complete the installation of the second screw. Then the electric screwdriver 3 is reset, and the third electric screw 7 is started to move, moving the screw hole on another axis to the position directly below the electric screwdriver 3. The operation is repeated to screw into the third and fourth screw holes.

[0041] After all screws are driven into the screw holes, the electric screwdriver 3 is reset under the drive of the first electric lead screw 4, the second electric lead screw 5, and the lifting cylinder 9. The third electric lead screw 7 drives the module 6 to move to the loading point. The clamping cylinder 17 drives the pressure plate 18 to move upward. At this time, the mobile phone with screws driven can be removed, and the second batch of mobile phones to be processed can be placed. This cycle can be repeated to continuously perform the screw driving operation.

[0042] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0043] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0044] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A mobile phone back cover screwing device, comprising a base plate (1) for installation, characterized in that: The base plate (1) is equipped with a first electric screw (4) that drives the electric screwdriver (3) to move left and right via the column (2). The slider of the first electric screw (4) is equipped with a second electric screw (5) that drives the electric screwdriver (3) to move up and down. In the middle of the base plate (1), there is a third electric screw (7) that drives the mold base (6) to move back and forth. The mobile phone that needs to be screwed is placed inside the mold base (6).

2. The mobile phone back cover screwing device according to claim 1, characterized in that: The slider of the second electric lead screw (5) is equipped with an adapter plate (8), and the adapter plate (8) is equipped with a lifting cylinder (9) that drives the electric screwdriver (3) to move up and down.

3. The mobile phone back cover screwing device according to claim 2, characterized in that: The adapter plate (8) has end plates (10) perpendicular to the adapter plate (8) at both ends. A guide rod (11) is installed between the end plates (10). A lifting cylinder (9) is fixed on the upper side of the end plate (10). The telescopic rod of the lifting cylinder (9) passes through the end plate (10) and is fixedly connected to the lifting block (12). The lifting block (12) is sleeved on the guide rod (11). An electric screwdriver (3) is installed on the extension of the lower end of the lifting block (12).

4. The mobile phone back cover screwing device according to claim 3, characterized in that: The adapter plate (8) has an auxiliary block (13) extending forward at its lower end, through which the rotating rod of the electric screwdriver (3) passes.

5. The mobile phone back cover screwing device according to any one of claims 1-4, characterized in that: The mold base (6) includes a mounting plate (14) fixedly connected to the third electric lead screw (7). Positioning molds (15) are fixedly installed on both sides of the mounting plate (14) by bolts. The upper end of the positioning mold (15) is a recessed placement groove (16).

6. The mobile phone back cover screwing device according to claim 5, characterized in that: A clamping cylinder (17) is fixed to the middle of the mounting plate (14) by bolts. The top of the clamping cylinder (17) is fixedly connected to the pressure plate (18). The two ends of the pressure plate (18) are located directly above the mounting slot (16).

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