Locking device with universal joint

Abstract

The utility model discloses a lock paying device with universal joint, including frame and be located in the lock paying mechanism and lock paying lifting drive cylinder of frame, lock paying mechanism includes lock paying seat and multiple lock paying units who set side by side in lock paying seat, and lock paying seat includes upper baseplate and detachable lower baseplate, lock paying unit includes servo motor, and the universal mechanism of pivot connection with servo motor and the electric screwdriver of fixed connection in the other end of universal mechanism, lower baseplate includes side mounting seat, a plurality of parallelly arranged mounting block, two blocking structure and elbow clamp, and mounting block has the arc slot of convenient electric screwdriver crossing, and mounting block is put into the recess of side mounting seat in proper order, and one end of two blocking structure is installed in one end of side mounting seat, and the both ends of elbow clamp are installed in the other end of two blocking structure respectively, and blocking structure is closed through elbow clamp to fix a plurality of mounting blocks on side mounting seat. The utility model has the characteristics of high precision, high adaptability, high efficiency and high reliability when locking screw.

Description

Technical Field

[0001] This utility model relates to the field of mechanical device technology, and in particular to a locking device with a universal joint. Background Technology

[0002] In modern electronic device manufacturing, CPU assembly requires high-precision screw tightening. Traditional screw tightening equipment typically uses fixed-position screw tightening devices, which cannot flexibly adapt to screw holes of different angles and positions, and are prone to damage due to uneven tightening force during the tightening process. Furthermore, traditional tightening methods mainly rely on manual operation of screwdrivers or ordinary electric screwdrivers, which has the following problems: uneven tightening force, difficulty in precisely controlling torque during manual operation, easily leading to screws being overtightened or undertightened, causing chip substrate deformation, solder joint cracking, or poor contact. Poor angle adaptability, limited CPU installation space, and the inability of traditional tightening tools to flexibly adjust the angle can lead to misaligned screws or incomplete tightening, with yield rates depending on operator experience, making it difficult to meet the process requirements of high-precision electronic assembly. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a locking device with a universal joint, which has the characteristics of high precision, high adaptability, high efficiency and high reliability when locking screws.

[0004] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a locking device with a universal joint is provided, including a frame and a locking mechanism and a locking lifting drive cylinder disposed on the frame, wherein the locking mechanism is fixedly installed at the end of the push rod of the locking lifting drive cylinder;

[0005] The locking mechanism includes a locking base and a plurality of locking units arranged side by side on the locking base. The locking base includes an upper base and a detachable lower base. The upper end of the locking unit is fixed to the upper base, and the lower end passes through the lower base and extends out.

[0006] The locking unit includes a servo motor, a universal joint connected to the shaft of the servo motor, and an electric screwdriver fixedly connected to the other end of the universal joint. The servo motor is fixedly mounted on the upper base. The lower base includes a side mounting seat, several mounting blocks arranged in parallel, two blocking structures, and an elbow clamp. The mounting blocks have arc-shaped grooves to facilitate the passage of the electric screwdriver. The mounting blocks are sequentially placed into the grooves of the side mounting seat. One end of each of the two blocking structures is mounted on one end of the side mounting seat, and both ends of the elbow clamp are mounted on the other ends of the two blocking structures. The elbow clamp closes the blocking structures, thereby fixing the multiple mounting blocks on the side mounting seat.

[0007] Furthermore, the electric screwdriver has a built-in spring for cushioning.

[0008] Furthermore, an auxiliary limiting mechanism for clamping the workpiece is provided directly below the locking mechanism. The auxiliary limiting mechanism includes a clamping seat, a clamping plate, a rotating plunger, a clamping sleeve, and a clamping column. The rear ends of the clamping seat and the clamping plate are each provided with corresponding holes. The clamping seat and the clamping plate are installed together by rotating the plunger through the corresponding holes.

[0009] The clamping plate has a plurality of clamping sleeves, and the walls of the clamping sleeves have a plurality of through holes, in which steel balls are installed; a guide bead is fixedly installed at the lower end of the screwdriver of the electric screwdriver;

[0010] The clamping columns are provided in multiple form and are fixedly installed at the bottom of the clamping plate.

[0011] Furthermore, the upper surface of the clamping seat has a spring for cushioning the pressure when the locking seat descends.

[0012] To elaborate further, the universal joint is a double-headed telescopic universal joint.

[0013] Furthermore, a bearing structure is provided between the upper end of the electric screwdriver and the lower end of the universal joint mechanism.

[0014] Furthermore, a bearing structure is provided between the upper end of the universal joint and the upper fixed seat.

[0015] Furthermore, each of the aforementioned blocking structures includes two connecting arms and a connecting block. One end of the connecting arm is rotatably connected to the front end of the side mounting base, and the other end of the connecting arm is mounted on the connecting block. The two ends of the elbow clamp are respectively mounted on the two mounting blocks.

[0016] Furthermore, the head and root of the electric screwdriver are detachably connected;

[0017] The head of the electric screwdriver refers to the section with the guide bead.

[0018] The beneficial effects of this utility model are:

[0019] The locking device of this utility model features high precision, high adaptability, high efficiency, and high reliability when locking screws, as detailed below:

[0020] High precision: The screw tightening depth is controlled by a servo motor, a universal mechanism for adjusting the direction, and a guide ball and steel ball. This ensures precise locking position and torque.

[0021] High adaptability: The electric screwdriver has a built-in spring buffer, plus a universal joint mechanism for adaptive direction adjustment and a quick-change elbow clamp structure, making it compatible with different workpieces and assembly errors.

[0022] High efficiency: The locking mechanism is raised and lowered by a locking lifting drive cylinder, achieving automated and rapid operation.

[0023] High reliability: The frame support and spring buffer design extend the service life of the equipment.

[0024] 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 utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0026] Figure 2 This is one of the structural schematic diagrams of this utility model;

[0027] Figure 3 This is the utility model Figure 2 A magnified view of part A;

[0028] Figure 4 This is a right view of the locking mechanism of this utility model;

[0029] Figure 5 This is an axial sectional view of the clamping sleeve of this utility model;

[0030] Figure 6 This is a structural schematic diagram of the mounting block of this utility model (taking two mounting blocks as an example);

[0031] The parts in the attached diagram are labeled as follows:

[0032] Frame 1, Locking Mechanism 2, Locking Lifting Drive Cylinder 3, Locking Seat 21, Upper Base 211, Lower Base 212, Side Mounting Seat 2121, Groove 21211, Mounting Block 2122, Arc Groove 21221, Blocking Structure 2123, Connecting Arm 21231, Connecting Block 21232, Elbow Clamp 2124, Locking Unit 22, Servo Motor 221, Universal Mechanism 222, Electric Screwdriver 223, Guide Bead 2231, Auxiliary Limiting Mechanism 4, Pressing Seat 41, Pressing Plate 42, Rotary Piston 43, Pressing Sleeve 44, Steel Ball 441, Pressing Column 45, Spring 46, Bearing Structure 5. Detailed Implementation

[0033] The following specific embodiments illustrate the detailed implementation of this utility model. Those skilled in the art can easily understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented in other different ways, that is, different modifications and changes can be made without departing from the scope disclosed in this utility model.

[0034] The descriptions of positions such as up, down, left, and right in this embodiment are based on the orientation in the accompanying drawings, have no special meaning, and are not intended to limit the scope of protection of this utility model.

[0035] Example: A locking device with a universal joint, such as Figures 1 to 6 As shown, it includes a frame 1 and a locking mechanism 2 and a locking lifting drive cylinder 3 disposed on the frame. The locking mechanism is fixedly installed at the end of the push rod of the locking lifting drive cylinder.

[0036] The locking mechanism includes a locking base 21 and a plurality of locking units 22 arranged side by side on the locking base. The locking base includes an upper base 211 and a detachable lower base 212. The upper end of the locking unit is fixed to the upper base, and the lower end passes through the lower base and extends out.

[0037] The locking unit 22 includes a servo motor 221, a universal joint 222 connected to the shaft of the servo motor, and an electric screwdriver 223 fixedly connected to the other end of the universal joint. The servo motor is fixedly mounted on the upper base. The lower base 212 includes a side mounting seat 2121, several mounting blocks 2122 arranged in parallel, two blocking structures 2123, and an elbow clamp 2124. The mounting blocks have arc-shaped grooves 21221 that facilitate the passage of the electric screwdriver. The mounting blocks are sequentially placed into the grooves 21211 of the side mounting seat. One end of the two blocking structures is mounted on one end of the side mounting seat, and the two ends of the elbow clamp are respectively mounted on the other ends of the two blocking structures. The elbow clamp closes the blocking structures, thereby fixing the multiple mounting blocks on the side mounting seat.

[0038] An auxiliary limiting mechanism 4 for pressing the workpiece is provided directly below the locking mechanism. This auxiliary limiting mechanism can be installed at the bottom of the frame.

[0039] In this embodiment, the electric screwdriver has a built-in spring for cushioning.

[0040] In this embodiment, the auxiliary limiting mechanism 4 includes a pressing seat 41, a pressing plate 42, a rotating plunger 43, a pressing sleeve 44, and a pressing column 45. The rear ends of the pressing seat and the pressing plate are respectively provided with corresponding holes. The pressing seat and the pressing plate are installed together by rotating the plunger through the corresponding holes.

[0041] The clamping plate has a plurality of clamping sleeves 44, and the walls of the clamping sleeves have a plurality of through holes, in which steel balls 441 are installed; a guide ball 2231 is fixedly installed at the lower end of the screwdriver of the electric screwdriver.

[0042] The clamping columns are provided in multiple form and are fixedly installed at the bottom of the clamping plate.

[0043] In this embodiment, the upper surface of the clamping seat has a spring 46 for buffering the pressure when the locking seat descends.

[0044] In this embodiment, the universal joint is a double-headed telescopic universal joint.

[0045] In this embodiment, a bearing structure 5 is provided between the upper end of the electric screwdriver and the lower end of the universal joint mechanism.

[0046] In this embodiment, a bearing structure 5 is provided between the upper end of the universal mechanism and the upper fixed seat.

[0047] In this embodiment, each of the blocking structures 2123 includes two connecting arms 21231 and a connecting block 21232. One end of the connecting arm is rotatably connected to the front end of the side mounting base, and the other end of the connecting arm is mounted on the connecting block. The two ends of the elbow clamp are respectively mounted on the two mounting blocks.

[0048] In this embodiment, the head and root of the electric screwdriver are detachably connected; the head of the electric screwdriver refers to the section with the guide bead. For different workpieces or when fastening different screws, the clamping structure and the head of the electric screwdriver can be replaced. Simultaneously, different mounting blocks can be used to install the upper end of the electric screwdriver at different positions on the lower base. Because the upper end of the electric screwdriver is mounted to the fastening seat via mounting blocks, the screw fastening position will differ after changing the workpiece. In this case, replacing the mounting block with one having a different arc-shaped groove allows for changing the mounting position of the electric screwdriver, enabling it to align with the hole of the screw to be fastened on the workpiece.

[0049] The locking device is driven by a locking lifting drive cylinder, which raises and lowers the locking mechanism. The connecting rod of the locking lifting drive cylinder is connected to the locking seat via a floating joint, allowing all components on the locking seat to move along the guide rail at the top of the frame. The locking unit uses a servo motor to drive the electric screwdriver for tightening, and the connecting shaft of the servo motor is connected to a universal joint. The universal joint consists of a telescopic universal joint and an adapter shaft, ensuring flexible adjustment. A spring is installed above the clamping seat, which, together with the spring on the electric screwdriver itself, forms a buffer device to mitigate impact. A guide ball is installed on the screwdriver at the lower end of the electric screwdriver. Through the cooperation of the steel ball on the clamping sleeve, the descent height of the electric screwdriver can be controlled, thus ensuring precise locking. All components of this device work together to achieve efficient and precise locking operations.

[0050] In this invention, the locking lifting drive cylinder uses a floating joint connection to reduce damage to the cylinder from lateral forces and ensure smooth movement. It provides linear reciprocating power to drive the lifting movement of the entire locking mechanism.

[0051] The screw fastening unit uses a servo motor to precisely control the speed and torque, ensuring the force and consistency of screw fastening and adapting to different screw specifications.

[0052] The universal joint mechanism ensures stable force transmission. It employs a bidirectional telescopic universal joint to provide multi-directional degrees of freedom, compensating for assembly errors. This allows the screwdriver to adaptively adjust its angle within a certain range to accommodate different fastening positions.

[0053] Spring buffer device: The double-spring structure enhances the buffering effect and extends equipment life. It reduces the impact of vibration on tightening accuracy. It absorbs the impact force during the tightening process, preventing damage to the workpiece or tool from hard collisions.

[0054] Locking unit: Enables precise screw feeding and locking; guide beads ensure screws enter the screw hole vertically, reducing the risk of stripping.

[0055] The rotary plunger allows for quick replacement of the clamping plate and components, adapting to workpieces of different specifications.

[0056] The working principle and process of this utility model:

[0057] The workpiece is placed on the carrier of the worktable, and then the auxiliary limiting mechanism helps to clamp the workpiece. The clamping sleeve is aligned precisely with the screw part of the workpiece. The screw is then placed into the clamping sleeve, and the locking lifting drive cylinder drives the locking seat and the locking mechanism mounted on it to descend as a whole, so that the screwdriver of the electric screwdriver is aligned with the screw hole of the workpiece. When the guide ball detects that the screwdriver is disengaged from the workpiece, the servo motor drives the electric screwdriver to rotate, starting the precise locking operation. When the guide ball touches the steel ball, it indicates that the screw is locked in place. During the locking process, the telescopic universal joint automatically compensates for the positional deviation of the workpiece, ensuring that the screwdriver always remains in a vertical position. The spring absorbs the impact force during locking.

[0058] The above description is merely an embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structure made using the contents of the present utility model specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A locking device with a universal joint, characterized in that: It includes a frame (1) and a locking mechanism (2) and a locking lifting drive cylinder (3) disposed on the frame, wherein the locking mechanism is fixedly installed at the end of the push rod of the locking lifting drive cylinder; The locking mechanism includes a locking seat (21) and a plurality of locking units (22) arranged side by side on the locking seat. The locking seat includes an upper base (211) and a detachable lower base (212). The upper end of the locking unit is fixed to the upper base, and the lower end passes through the lower base and extends out. The locking unit (22) includes a servo motor (221), a universal joint (222) connected to the shaft of the servo motor, and an electric screwdriver (223) fixedly connected to the other end of the universal joint. The servo motor is fixedly mounted on the upper base. The lower base (212) includes a side mounting seat (2121), several mounting blocks (2122) arranged in parallel, two blocking structures (2123), and an elbow clamp (2124). The mounting blocks have arc-shaped grooves (21221) that facilitate the passage of the electric screwdriver. The mounting blocks are sequentially placed into the grooves (21211) of the side mounting seat. One end of the two blocking structures is mounted on one end of the side mounting seat, and the two ends of the elbow clamp are respectively mounted on the other ends of the two blocking structures. The elbow clamp closes the blocking structures, thereby fixing the multiple mounting blocks on the side mounting seat.

2. The locking device with universal joint according to claim 1, characterized in that: The electric screwdriver has a built-in spring for cushioning.

3. The locking device with universal joint according to claim 1, characterized in that: The locking mechanism is provided with an auxiliary limiting mechanism (4) for pressing the workpiece directly below it. The auxiliary limiting mechanism (4) includes a pressing seat (41), a pressing plate (42), a rotating plunger (43), a pressing sleeve (44), and a pressing column (45). The rear ends of the pressing seat and the pressing plate are respectively provided with corresponding holes. The pressing seat and the pressing plate are installed together by rotating the plunger through the corresponding holes. The clamping plate has a plurality of clamping sleeves (44), and the walls of the clamping sleeves have a plurality of through holes, in which steel balls (441) are installed; a guide ball (2231) is fixedly installed at the lower end of the screwdriver of the electric screwdriver. The clamping columns are provided in multiple form and are fixedly installed at the bottom of the clamping plate.

4. The locking device with universal joint according to claim 3, characterized in that: The upper surface of the clamping seat has a spring (46) for cushioning the pressure when the locking seat descends.

5. The locking device with universal joint according to claim 1, characterized in that: The universal joint is a double-headed telescopic universal joint.

6. The locking device with universal joint according to claim 1, characterized in that: A bearing structure (5) is provided between the upper end of the electric screwdriver and the lower end of the universal joint.

7. The locking device with universal joint according to claim 1, characterized in that: A bearing structure is provided between the upper end of the universal joint and the upper fixed seat.

8. The locking device with universal joint according to claim 1, characterized in that: Each of the blocking structures (2123) includes two connecting arms (21231) and a connecting block (21232). One end of the connecting arm is rotatably connected to the front end of the side mounting base, and the other end of the connecting arm is mounted on the connecting block. The two ends of the elbow clamp are respectively mounted on the two mounting blocks.

9. The locking device with universal joint according to claim 3, characterized in that: The head and base of the electric screwdriver are detachably connected; The head of the electric screwdriver refers to the section with the guide bead.

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