Transverse screw locking electric screwdriver head assembly

Abstract

The utility model discloses a transverse screw locking electric screwdriver bit assembly, and belongs to the technical field of electric screwdriver bit assemblies. Comprising a horizontal main plate, an air cylinder, an electric screwdriver, a screw clamping nozzle and an in-place limiting unit, and an air cylinder support is fixed to the horizontal rear end; the horizontal main plate is fixed on a workbench locked by a screw; the air cylinder is fixed on the air cylinder support; the linear guide unit comprises a guide rail fixed on the front side of the horizontal main plate; a front sliding block and a rear sliding block are arranged on the guide rail in a sliding mode. A guide column movably penetrates through the front sliding block, and a limiting head is integrally manufactured at the front end of the guide column. The rear end of the guide column is fixed to the rear sliding block. Buffer springs are arranged on the guide columns between the front sliding block and the rear sliding block; the electric screwdriver is clamped and fixed on the rear sliding block; a screwdriver head is fixed at the front end of the electric screwdriver; according to the transversely-arranged type screw locking electric screwdriver head assembly, an electric screwdriver can stably and accurately move in the horizontal direction, and it is guaranteed that the screwdriver head accurately moves to the preset position.

Description

Technical Field

[0001] The utility model specifically relates to a horizontal screw-locking electric screwdriver bit assembly, belonging to the technical field of electric screwdriver bit assemblies. Background Art

[0002] In order to improve the efficiency and quality of screw locking, in the automated production line, the existing technology generally uses a screw locking machine to screw the product; for long screw products, an air-blowing feeding method is generally adopted, which mainly relies on compressed air to blow the screws to the tightening module gun head position and wait for locking. The whole process is controlled by PLC, and the actions of conveying screws and locking screws are performed alternately; for example, China Patent Publication No.: CN119870914A discloses an air-blowing screw driving device, including a machine base and an electric screw driving mechanism installed thereon. The air-blowing screw driving device provided by this structure has high working efficiency and low control difficulty, and when the screw is stuck, only the part of the feeding mechanism needs to be checked, thereby shortening the downtime; however, the application of existing electric screwdriver head components has significant technical limitations: the mainstream electric screwdrivers on the market all adopt a vertical direction (Z The transmission system and gripping mechanism are only optimized for vertical locking scenarios; when horizontal locking is required for scenes such as the side of the workpiece and the horizontal surface, the existing technology exposes the following structural defects: First, the automated production line adopts a vertical electric screwdriver module. If the horizontal locking function is required, a workpiece flipping mechanism or a multi-station rotary table must be added to the production line; the output drive shaft and gripping handle of the traditional electric screwdriver are designed to bear force in the vertical direction. If they are forced to be used horizontally, they will sag or swing due to their own gravity and the reaction force of the screw, resulting in a large error in the verticality of the screw, which seriously affects the assembly accuracy of the workpiece; in addition, the existing electric screwdriver is driven by a cylinder and cannot accurately control the travel position, which can easily cause the screw bit to rigidly impact the workpiece surface or cause insufficient screw locking depth. Utility Model Content

[0003] In order to solve the above problems, the present invention proposes a horizontally placed screw-locking electric screwdriver bit assembly, which can realize stable and precise movement of the electric screwdriver in the horizontal direction, ensuring that the screwdriver bit moves accurately to a preset position.

[0004] The utility model discloses a horizontal screw-locking electric screwdriver bit assembly, comprising:

[0005] The horizontal main board has a cylinder support fixed to its rear end. The horizontal main board is fixed to a workbench with screws. As a basic component, the horizontal main board connects and fixes other components, providing stable structural support for the entire device.

[0006] The cylinder is fixed on the cylinder support; it provides power for horizontal movement, pushes the electric screwdriver and related components to move in the horizontal direction, and realizes the horizontal displacement of the electric screwdriver from the initial position to the locking position;

[0007] The linear guide unit comprises a guide rail fixed to the front side of the horizontal main board; a front slider and a rear slider are slidably provided on the guide rail; a guide column is movably passed through the front slider, and the front end of the guide column is integrally made into a limited position head; the rear end of the guide column is fixed to the rear slider; a buffer spring is provided between the guide column and the front slider; the linear guide unit provides guiding and load-bearing functions for the horizontal movement of the component; the guide rail ensures the linearity and accuracy of the horizontal movement of the electric screwdriver and related components, and the front slider and the rear slider slide smoothly on the guide rail, while bearing the weight of the device, reducing shaking and deviation during movement; the buffer spring plays a buffering role in the process of locking the screw; when the electric screwdriver tightens the screw, the reaction force between the screw and the workpiece will be transmitted to the electric screwdriver, and the buffer spring can absorb this part of the reaction force to avoid displacement or vibration of the electric screwdriver due to excessive force, thereby ensuring the locking accuracy;

[0008] The electric screwdriver is clamped and fixed on the rear slider; a screwdriver head is fixed on the front end of the electric screwdriver; as the core executive component of locking screws, it is responsible for screwing the screws into the workpiece.

[0009] The screw clamping nozzle is fixed to the front slider; the bit and the screw clamping nozzle are arranged concentrically; it is used to receive the screw, fix it and guide it; the clamping nozzle accurately clamps the screw, so that it maintains a stable posture in the horizontal direction, ensuring that the screw can be accurately aligned with the screw hole on the workpiece, providing the prerequisite for accurate tightening;

[0010] The in-place limit unit includes a front limit assembly and a rear limit assembly; the front limit assembly is fixed to the front end of the front slider; the rear limit assembly is fixed to the front end of the rear slider; and can accurately control the travel position of the screwdriver bit and the screw clamp;

[0011] During operation, the cylinder starts, pushing the electric screwdriver and connecting parts to move horizontally along the linear guide unit to the position corresponding to the screw hole of the workpiece. During the movement, the linear guide unit ensures the accuracy and stability of the movement. When it reaches the target position, the screwdriver head is precisely aligned with the screw loaded in the screw clamp, and at the same time, it is aligned with the screw hole; and under the action of the cylinder air pressure on the screw, the electric screwdriver starts to work. During the process of tightening the screw, the buffer spring buffers the reaction force to prevent the electric screwdriver from displacement or vibration, thereby accurately completing the horizontal screw locking operation; during the movement of the electric screwdriver, the front slider first abuts against the front limit assembly to position the screw clamp, and as the cylinder moves, the rear limit assembly limits the rear slider to achieve precise control of the moving position of the screwdriver head.

[0012] Furthermore, the front limit assembly includes a base that is clamped and fixed on the guide rail, and the guide rail is provided with an adjustment support plate sliding on the rear side of the base, and a sliding column is fixed on the adjustment support plate to slide with the base, and an adjustment bolt that abuts the adjustment support plate is also screwed on the base; the front limit assembly can be used to limit the travel position of the screw clamp, and during operation, the adjustment bolt is rotated to drive the adjustment support plate to return to the stop position, and the current slider pushes the rear slider to slide through the buffer spring, so that the rear slider is leaned against the adjustment support plate, so that the adjustment support plate abuts against the adjustment bolt, thereby limiting the rear slider, thereby limiting the position of the screw clamp.

[0013] Furthermore, the rear limit assembly includes an edge block integrally formed on the top of the front slider; a plurality of force bolts that are movably abutted against the rear slider are screwed onto the edge block; the feed distance of the bit can be accurately adjusted by screwing the force bolts in or out, and the position of the bit can be accurately controlled by cooperating with the force bolts and the edge block.

[0014] Furthermore, electromagnets are fixed on both sides of the front slider and the rear slider; the electromagnets generate mutual repulsion to prevent the cylinder from directly impacting the rear limit assembly, and the mutual repulsion of the electromagnets is used to form a buffering force, while giving the bit time to load the screw; after loading is completed, the electromagnet is directly closed to allow the bit loaded with the screw to align with the screw hole of the workpiece; at this time, the front slider and the rear limit assembly are abutted by the air pressure of the cylinder to ensure the screw feed depth; in addition, the current of the electromagnet can be reduced in sequence until it is closed or switched to a mutual attraction mode after closing, so that the bit can be fed slowly and steadily into the screw hole.

[0015] Furthermore, the screw clamp nozzle is a pneumatic screw clamp nozzle, and the material connection head of the screw clamp nozzle is connected to the pneumatic screw feeding pipeline; the screws are arranged and fed into the pneumatic screw feeding pipeline through the vibration plate, and the pneumatic screw feeding pipeline loads the screws into the inside of the screw clamp nozzle.

[0016] Furthermore, the bit is a vacuum bit; the vacuum end of the vacuum bit is connected to the exhaust pipeline; the radial direction of the screw is restricted by the screw clamp, the bit and the screw are in a coaxial state, the exhaust pipeline can vacuum the inside of the vacuum bit, and the bit can vacuum suck the screw to the end of the bit.

[0017] Compared with the prior art, the horizontal screw-locking electric screwdriver bit assembly of the present invention has the following advantages:

[0018] 1. Through the cooperation of the horizontal main board, linear guide unit and cylinder, the electric screwdriver can be moved stably and accurately in the horizontal direction, solving the problem of easy deviation of traditional electric screwdrivers when used horizontally, and ensuring high precision of screw locking;

[0019] 2. The setting of the buffer spring effectively reduces the impact of the reaction force on the electric screwdriver during the locking process, improves the locking stability, and avoids problems such as screw slippage and inconsistent locking depth caused by vibration.

[0020] 3. The device has a compact structure and integrated functions, and does not require additional complex turning tooling. It is easier to integrate into the automated production line, realizing the automated operation of horizontal screw locking, improving production efficiency and reducing costs.

[0021] 4. The position of the bit can be accurately controlled by the in-place limit unit, thereby avoiding the problem of impact on the workpiece surface or insufficient screw locking depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the horizontal screw-locking electric screwdriver bit assembly of the utility model without the limiting unit installed in place.

[0023] Figure 2 This is a schematic diagram of the overall structure of the horizontal screw-locking electric driver bit assembly of the present invention.

[0024] Figure 3 For the utility model Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0025] Figure 4 This is a schematic diagram of the installation structure of the horizontal screw-locking electric screwdriver bit assembly and the electromagnet of the present invention.

[0026] Figure numerals: 1. horizontal main board, 2. cylinder support, 3. cylinder, 4. guide rail, 5. front slider, 6. rear slider, 7. guide column, 8. buffer spring, 9. screwdriver bit, 10. screw clamp, 11. holder, 12. adjustment plate, 13. slide column, 14. adjustment bolt, 15. side block, 16. force bolt, 17. electromagnet, 18. electric screwdriver. DETAILED DESCRIPTION

[0027] Example:

[0028] like Figures 1 to 4 The horizontal screwdriver bit assembly shown includes:

[0029] A horizontal main board 1, the horizontal rear end of which is fixed with a cylinder support 2; the horizontal main board 1 is fixed to a workbench with screws; the horizontal main board 1 serves as a basic component, connecting and fixing other components, and providing stable structural support for the entire device;

[0030] The cylinder 3 is fixed on the cylinder support 2; it provides power for horizontal movement, pushes the electric screwdriver 18 and related components to move in the horizontal direction, and realizes the horizontal displacement of the electric screwdriver 18 from the initial position to the locking position;

[0031] The linear guide unit includes a guide rail 4 fixed to the front side of the horizontal main board 1; a front slider 5 and a rear slider 6 are slidably provided on the guide rail 4; a guide column 7 is movably passed through the front slider 5, and the front end of the guide column 7 is integrally made into a limited position head; the rear end of the guide column 7 is fixed to the rear slider 6; a buffer spring 8 is provided between the guide column 7 and the front slider 5 and the rear slider 6; the linear guide unit provides guiding and load-bearing functions for the horizontal movement of the component; the guide rail 4 ensures the linearity and accuracy of the horizontal movement of the electric screwdriver 18 and related components, and the front slider 5 and the rear slider 6 slide smoothly on the guide rail 4, while bearing the weight of the device, reducing shaking and deviation during movement; the buffer spring 8 plays a buffering role in the process of locking the screw; when the electric screwdriver 18 tightens the screw, the reaction force between the screw and the workpiece will be transmitted to the electric screwdriver 18, and the buffer spring 8 can absorb this part of the reaction force to prevent the electric screwdriver 18 from being displaced or vibrated due to excessive force, thereby ensuring the locking accuracy;

[0032] The electric screwdriver 18 is clamped and fixed on the rear slider 6; the front end of the electric screwdriver 18 is fixed with a screw bit 9; as the core executive component of locking the screw, it is responsible for screwing the screw into the workpiece.

[0033] The screw clamping nozzle 10 is fixed to the front slider 5; the bit 9 is concentrically arranged with the screw clamping nozzle 10; it is used to receive, fix and guide the screw; the clamping nozzle accurately clamps the screw, so that it maintains a stable posture in the horizontal direction, ensuring that the screw can be accurately aligned with the screw hole on the workpiece, providing the prerequisite for accurate tightening;

[0034] The in-place limit unit includes a front limit assembly and a rear limit assembly; the front limit assembly is fixed to the front end of the front slider 5; the rear limit assembly is fixed to the front end of the rear slider 6; and can accurately control the travel position of the screw bit 9 and the screw clamp 10;

[0035] During operation, the cylinder 3 starts, pushing the electric screwdriver 18 and the connecting parts to move horizontally along the linear guide unit to the position corresponding to the screw hole of the workpiece. During the movement, the linear guide unit ensures the accuracy and stability of the movement. When the target position is reached, the screw bit 9 is precisely aligned with the screw loaded in the screw clamp 10, and at the same time, it is aligned with the screw hole; and under the action of the air pressure of the cylinder 3 on the screw, the electric screwdriver 18 starts to work. In the process of tightening the screw, the buffer spring 8 buffers the reaction force to prevent the electric screwdriver 18 from displacement or vibration, thereby accurately completing the horizontal screw locking operation; in the movement of the electric screwdriver 18, the front slider 5 first abuts against the front limit assembly to realize the positioning of the screw clamp 10, and as the cylinder 3 moves, the rear limit assembly limits the rear slider 6 to achieve precise control of the moving position of the screw bit 9.

[0036] The front limit assembly includes a base 11 that is clamped and fixed on the guide rail 4, and the guide rail 4 is slidably provided with an adjustment support plate 12 on the rear side of the base 11, and a sliding column 13 that slides with the base 11 is fixed on the adjustment support plate 12, and an adjustment bolt 14 that abuts against the adjustment support plate 12 is also screwed on the base 11; the front limit assembly can be used to limit the travel position of the screw clamp 10. During operation, the adjustment bolt 14 is rotated to drive the adjustment support plate 12 to return to the stop position. The current slider 5 pushes the rear slider 6 to slide through the buffer spring 8, so that the rear slider 6 is leaning against the adjustment support plate 12, so that the adjustment support plate 12 abuts against the adjustment bolt 14, thereby limiting the rear slider 6, thereby limiting the position of the screw clamp 10.

[0037] The rear limit assembly includes a side block 15 integrally formed on the top of the front slider 5; a plurality of force bolts 16 that are movably in contact with the rear slider 6 are screwed onto the side block 15; by screwing the force bolts 16 in or out, the feed distance of the bit 9 can be accurately adjusted, and the cooperation between the force bolts 16 and the side block 15 can achieve precise control of the travel position of the bit 9.

[0038] Electromagnets 17 are fixed on both sides of the front slider 5 and the rear slider 6; the electromagnets 17 generate mutual repulsion to prevent the cylinder 3 from directly impacting the rear limit assembly, and the mutual repulsion of the electromagnets 17 is used to form a buffer force. At the same time, time is given to the bit 9 to load the screw; after loading is completed, the electromagnet 17 is directly closed, so that the bit 9 loaded with the screw is aligned with the screw hole of the workpiece; at this time, the air pressure of the cylinder 3 is used to abut the front slider 5 and the rear limit assembly to ensure the screw feeding depth; in addition, the current of the electromagnet 17 can be reduced in sequence until it is closed or switched to the mutual attraction mode after closing, so that the bit 9 can be fed slowly and steadily into the screw hole.

[0039] The screw clamp 10 is a pneumatic screw clamp, and the connecting head of the screw clamp 10 is connected to the pneumatic screw feeding pipeline; the screws are arranged and fed into the pneumatic screw feeding pipeline through the vibration disk, and the pneumatic screw feeding pipeline loads the screws into the inside of the screw clamp 10. The pneumatic screw clamp, pneumatic screw feeding pipeline and vibration disk connection structure have been widely used in the existing screw locking system and will not be described in detail here.

[0040] The bit 9 is a vacuum bit; the vacuum end of the vacuum bit is connected to the exhaust pipe; the radial direction of the screw is limited by the screw clamp 10, the bit 9 and the screw are in a coaxial state, the exhaust pipe can evacuate the inside of the vacuum bit, and the bit 9 can vacuum suck the screw and load it to the end of the bit 9; the connection structure of the vacuum bit and the exhaust pipe has been widely used in the existing screw locking system and will not be described in detail here.

[0041] The above embodiments are only preferred implementations of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A horizontal screw-locking electric driver bit assembly, characterized by: include: A horizontal main board, the horizontal rear end of which is fixed with a cylinder support; the horizontal main board is fixed to a workbench with screws; A cylinder, wherein the cylinder is fixed on a cylinder support; A linear guide unit, comprising a guide rail fixed to the front side of a horizontal main board; a front slider and a rear slider slidably provided on the guide rail; a guide post movably passing through the front slider, the front end of the guide post being integrally formed into a limit head; a rear end of the guide post being fixed to the rear slider; a buffer spring being provided between the guide post and the front slider; An electric screwdriver, the electric screwdriver being clamped and fixed on the rear slider; a screwdriver head being fixed on the front end of the electric screwdriver; A screw clamping mouth, the screw clamping mouth is fixed on the front slider; the bit and the screw clamping mouth are concentrically arranged; The in-place limiting unit comprises a front limiting assembly and a rear limiting assembly; the front limiting assembly is fixed to the front end of the front slider; the rear limiting assembly is fixed to the front end of the rear slider.

2. The horizontal screw-locking electric driver bit assembly according to claim 1, characterized in that: The front limit assembly includes a base that is clamped and fixed on the guide rail, and the guide rail is provided with an adjustment plate that slides on the rear side of the base. A sliding column that slides with the base is fixed on the adjustment plate, and an adjustment bolt that abuts against the adjustment plate is screwed on the base.

3. The horizontal screw-locking electric driver bit assembly according to claim 1, characterized in that: The rear limit assembly includes a side block integrally formed on the top of the front slider; a plurality of force-bearing bolts that are movably abutted against the rear slider are screwed onto the side block.

4. The horizontal screw-locking electric driver bit assembly according to claim 1, characterized in that: Electromagnets are fixed opposite to both sides of the front slider and the rear slider.

5. The horizontal screw-locking electric driver bit assembly according to claim 1, characterized in that: The screw clamp nozzle is a pneumatic screw clamp nozzle, and the material connection head of the screw clamp nozzle is connected to the pneumatic screw feeding pipeline.

6. The horizontal screw-locking electric driver bit assembly according to claim 1, characterized in that: The screwdriver bit is a vacuum screwdriver bit; the vacuum end of the vacuum screwdriver bit is connected to the air extraction pipeline.

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