An automatic screw tightening device for spinning heads
By introducing a dual-station transfer module and photoelectric sensors into the automatic screw tightening device for the spinning head, the alternating operation of the left and right transfer carriages was realized, solving the problem of insufficient process continuity and improving production efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA NINGDONG TAIHE NEW MATERIAL CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-07-03
AI Technical Summary
The existing automatic screw tightening device for spinning heads suffers from insufficient process continuity, resulting in low processing efficiency and failing to meet the needs of large-scale, high-efficiency production.
It adopts a dual-station transfer module and continuous operation mode. The left and right transfer trolleys run alternately, and the alternating operation is triggered when the photoelectric sensor detects no one, which ensures the safety of the operator. The dovetail guide rail and roller groove design improve the stability of operation and the efficiency of rapid loading and unloading.
It enables uninterrupted continuous production, improves processing efficiency, reduces waiting time, increases equipment utilization, and ensures operator safety through photoelectric sensors.
Smart Images
Figure CN224445211U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of automatic screw-locking equipment, and in particular to an automatic screw-tightening device for a spinning head. Background Technology
[0002] In the manufacturing of textile machinery, high-precision assembly has always been a key aspect of ensuring product quality. In the traditional assembly process of spinning heads, the screw tightening step often relies on manual operation, which is not only labor-intensive but also makes it difficult to guarantee consistent assembly accuracy. To solve this problem, an automatic screw tightening device for spinning heads has emerged in existing technology.
[0003] This device is an automated machine specifically designed for high-precision assembly in textile machinery. It uses a vibratory feeder or screw conveyor to automatically sort and feed screws, while combining XYZ axis tracks and servo motor drives to precisely position screw holes and electric screwdrivers. Furthermore, the device is equipped with multiple independently controlled electric screwdriver units, capable of processing multiple screw holes simultaneously, thus improving assembly efficiency to a certain extent.
[0004] In actual processing, the typical operating procedure is as follows: the user first places the workpieces onto the trolley in sequence, then positions the trolley on the worktable of the automatic screw-tightening device using a pre-set workpiece positioning system for automatic screw-tightening. After the screw-tightening process is completed, the trolley is removed and replaced with a trolley containing a new workpiece, and this cycle is repeated.
[0005] However, this processing method has obvious drawbacks. Because the trolley cannot be moved and replaced with a trolley carrying new workpieces until all the workpieces on it have been screwed on, there is a long waiting time in the entire processing process, which greatly limits the further improvement of processing efficiency and cannot meet the growing demand for large-scale, high-efficiency production. Utility Model Content
[0006] The purpose of this invention is to solve the problem of low processing efficiency caused by insufficient process continuity in the prior art.
[0007] To achieve the above objectives, this application proposes an automatic screw-tightening device for a spinning head, comprising:
[0008] A workbench; a protective frame covering the top surface of the workbench, wherein the workpiece transfer surface of the protective frame is provided with a transfer window, and the transfer window is divided into a left transfer window and a right transfer window by a rectangular cross-section reinforcing beam;
[0009] The protective frame has a guide rail on the inner wall of its top surface along the x-direction; the workbench has a positioning workpiece on its top surface that cooperates with the guide rail, and the positioning workpiece is fixed to the workbench by bolts.
[0010] The dual-station transfer module installed on the positioning workpiece includes: a left transfer trolley and a right transfer trolley corresponding to the left transfer window and the right transfer window;
[0011] This application discloses an automatic screw-tightening device for spinning heads. By setting a continuous operation mode, the left and right transfer carriages operate alternately. When the automatic screw-tightening device is working on the workpiece on the left carriage, the operator can load and unload the workpiece at the right window. After the automatic screw-tightening device finishes screwing the workpiece on the left, it transfers to the right window for operation, and the operator loads and unloads the workpiece at the left window. This achieves uninterrupted continuous production and solves the problem of low processing efficiency caused by insufficient process continuity in the prior art.
[0012] Furthermore, to facilitate the installation and prevent detachment of the automatic wire twisting device, the guide rail has a dovetail cross-section, with anti-detachment roller grooves integrated on both sides of the inclined surface.
[0013] Furthermore, in order to trigger alternating operations after the sensor detects that no one is present, a safety control unit is integrated inside the top beam of the protective frame. The safety control unit includes photoelectric sensors integrated on the left and right sides inside the top beam of the protective frame.
[0014] Furthermore, in order to maximize the coverage of the detection area, the transmitting end of the photoelectric sensor is integrated into the front edge of the top beam of the outer protective frame of the transfer window, and the receiving end is fixed to the inner side of the bottom beam of the same side frame.
[0015] Furthermore, to further expand the detection coverage, the optical axis of the photoelectric sensor forms a 45° angle with the movement direction of the left and right transfer trolleys.
[0016] Furthermore, in order to facilitate the operator's loading and unloading of workpieces and to avoid the operator being bumped by the sharp corners of the window, the left transfer window and the right transfer window are symmetrical rectangular frame structures, and the inner walls of the rectangular frames of the left transfer window and the right transfer window are chamfered.
[0017] Furthermore, to facilitate the rapid loading and unloading of the left and right transfer trolleys, transfer windows are provided on the left and right sides of the protective frame, and rollers are provided at the bottom of the left and right transfer trolleys.
[0018] The beneficial effects of this application are as follows:
[0019] 1. The present application discloses an automatic screw-tightening device for spinning heads, which sets a continuous operation mode: left and right transfer carriages run alternately. When the automatic screw-tightening device is working on the workpiece on the left carriage, the operator can load and unload the workpiece at the right window. After the automatic screw-tightening device finishes screwing the workpiece on the left, it is transferred to the right window for operation, and the operator loads and unloads the workpiece at the left window, realizing uninterrupted continuous production and solving the problem of low processing efficiency caused by insufficient process continuity in the prior art.
[0020] 2. This application is equipped with a photoelectric sensor, which can trigger alternating operation when the sensor detects no one is present, while protecting the operator's safety and preventing injury to the operator caused by the automatic spinning device.
[0021] 3. The transfer device of this application is configured as a trolley with rollers, which cooperates with the transfer windows opened on the left and right sides of the protective frame to realize the rapid loading and unloading of the left and right transfer trolleys. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of an automatic screw tightening device for a spinning head according to an embodiment of this application;
[0024] Figure 2 This is a structural schematic diagram from another perspective of an automatic screw-tightening device for a spinning head according to an embodiment of this application.
[0025] Explanation of reference numerals in the attached figures:
[0026] 1. Workbench;
[0027] 2. Protective frame; 21. Transfer window;
[0028] 3. Transfer window; 31. Left transfer window; 32. Right transfer window; 33. Reinforcing crossbeam;
[0029] 4. Guide rail;
[0030] 5. Position the workpiece;
[0031] 6. Dual-station transfer module; 61. Left transfer trolley; 62. Right transfer trolley;
[0032] 7. Safety control unit; 71. Photoelectric sensor. Detailed Implementation
[0033] The following will be combined with the appendix Figures 1-2 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.
[0034] Example 1
[0035] like Figures 1-2 This illustration depicts an automatic screw-tightening device for spinning heads according to this application. To achieve continuous production through a dual-station alternating operation structure, the device incorporates a dual-station transfer module. This module 6, mounted on the top surface of the worktable, comprises a left transfer trolley 61 and a right transfer trolley 62, which move in the X-direction via guide rails 4. The transfer window 3 of the protective frame 2 is divided into two independent windows (left and right) by a reinforcing beam 33, forming a dual-station layout.
[0036] Specifically, when the automatic wire twisting device is operating at the left-side station, the operator can load and unload workpieces at the right-side window; after the left-side operation is completed, the device quickly moves to the right-side station, and the operator simultaneously prepares new workpieces at the left-side window. This alternating operation mode improves equipment utilization and enables uninterrupted continuous production.
[0037] Furthermore, to ensure operational stability through the dovetail guide rail and anti-derailment roller grooves, in one embodiment of this application, the guide rail 4 adopts a special structure with a dovetail-shaped cross-section, and anti-derailment roller grooves are integrated on both sides of the inclined surface. The rollers at the bottom of the transfer trolley are embedded in the guide rail grooves, providing guiding force through wedge-shaped surface contact, while the rolling of the rollers reduces the coefficient of friction. The dovetail structure improves the load-bearing capacity of the guide rail, and the anti-derailment roller groove design effectively prevents the trolley from derailing during high-speed movement, improving operational stability compared to traditional rectangular guide rails.
[0038] Example 2
[0039] like Figures 1-2 This illustration depicts an automatic screw-tightening device for a spinning head according to this application. To achieve full safety coverage through a 45° angled photoelectric sensor, the photoelectric sensor 71 in the safety control unit 7 of this embodiment employs an asymmetrical layout. The transmitting end is installed on the front edge of the top beam outside the transfer window 3, and the receiving end is fixed to the inner side of the bottom beam on the same side. The optical axis forms a 45° angle with the direction of the trolley's movement. This layout ensures that the detection area covers the entire height and width of the transfer window, eliminating blind spots. When an operator enters the detection area, the sensor sends a stop signal, triggering an emergency stop for the equipment, thus improving safety performance compared to traditional through-beam sensors.
[0040] Specifically, the photoelectric sensor 71 used in this embodiment is an Omron E3Z-LT61-D. This photoelectric sensor 71 consists of a laser emitter, a receiver unit, and a built-in amplifier circuit. The laser emitter and receiver unit are respectively located on the front edge of the top beam outside the transfer window 3 and the inner side of the bottom beam on the same side. The emitter emits a light beam, and the receiver converts the received light signal into an electrical signal. The built-in amplifier circuit processes and analyzes the electrical signal to determine whether an operator has entered the detection area. When the light beam encounters an operator, part of the light is blocked, the light signal received by the receiver weakens, and the electrical signal is significantly weakened after amplification by the built-in amplifier circuit, thus indicating the presence of an operator at the transfer station.
[0041] Furthermore, the Omron E3Z-LT61-D photoelectric sensor's built-in amplification unit supports NPN output mode, allowing direct connection to a PLC or controller to achieve rapid response in automatic wire-twisting devices.
[0042] Example 3
[0043] like Figures 1-2 This illustration depicts an automatic screw-tightening device for spinning heads. To optimize ergonomics through chamfered transfer windows, the left transfer window 31 and right transfer window 32 employ a symmetrical rectangular frame design, with all right-angled edges of the inner walls chamfered to R5mm. Nylon guide wheels are installed at the bottom of the transfer trolley, forming flexible contact with the chamfered frame. The chamfered design reduces stress concentration at the window edges, lowering the risk of bumps and knocks during workpiece loading and unloading. In particular, it reduces the incidence of hand abrasions for operators after 8 hours of continuous work.
[0044] Meanwhile, the side-opening transfer windows enable rapid logistics turnover. Specifically, transfer windows 21 are opened on both the left and right sides of the protective frame 2, and polyurethane rollers are installed at the bottom of the transfer trolley. When a batch needs to be replaced, the trolley moves out through the side windows, and the AGV automated guided vehicle completes the material turnover. The side window design shortens the material turnover time and, in conjunction with the AGV transportation system, achieves "zero-wait" material connection.
[0045] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0046] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A spinning head automatic screwing device, characterized by, include: Workbench (1); a protective frame (2) covering the top surface of the workbench (1), the workpiece transfer surface of the protective frame (2) is provided with a transfer window (3), the transfer window (3) is divided into a left transfer window (31) and a right transfer window (32) by a rectangular cross-section reinforcing beam (33). The protective frame (2) has a guide rail (4) on the inner wall of the top surface along the x direction; the workbench (1) has a positioning workpiece (5) on the top surface that cooperates with the guide rail (4), and the positioning workpiece (5) is fixed to the workbench (1) by bolts. The dual-station transfer module (6) set on the positioning workpiece (5) includes: a left transfer trolley (61) and a right transfer trolley (62) corresponding to the left transfer window (31) and the right transfer window (32).
2. The spin head automatic screwing device according to claim 1, wherein The guide rail (4) has a dovetail structure in cross-section, and anti-detachment roller grooves are integrated on both sides of the inclined surface.
3. The spin head automatic screwing device of claim 1, wherein The safety control unit (7) is integrated inside the top beam of the protective frame (2). The safety control unit (7) includes photoelectric sensors (71) integrated on the left and right sides of the top beam of the protective frame (2).
4. The spin head automatic screwing device according to claim 3, wherein The transmitting end of the photoelectric sensor (71) is integrated on the front edge of the top beam of the outer protective frame of the transfer window (3), and the receiving end is fixed on the inner side of the bottom beam of the same side frame.
5. The spin head automatic screwing device according to claim 3, wherein The optical axis of the photoelectric sensor (71) forms a 45° angle with the movement direction of the left transfer trolley (61) and the right transfer trolley (62).
6. The spin head automatic screwing device of claim 1, wherein The left transfer window (31) and the right transfer window (32) are symmetrical rectangular frame structures, and the inner walls of the rectangular frames of the left transfer window (31) and the right transfer window (32) are chamfered.
7. The automatic screw-tightening device for the spinning head according to claim 1, characterized in that, The protective frame (2) has transfer windows (21) on its left and right sides, and the left transfer trolley (61) and right transfer trolley (62) are equipped with rollers at their bottoms.