Double-station miniature screw feeding device with improved transmission and dividing device

Abstract

The invention relates to a double-station miniature screw feeding device with an improved transmission and dividing device, and relates to the technical field of screw feeding devices. Comprising a shell, a vacuum adsorption type micro screw feeding module, an inner geneva wheel indexing mechanism and a worm and gear transmission mechanism. The vacuum adsorption type micro screw feeding modules are installed on the two sides of the interior of the shell. The worm and gear transmission mechanism is installed in the middle of the interior of the shell, the inner geneva wheel indexing mechanism is rotationally connected into the vacuum adsorption type miniature screw feeding module, and the output end of the worm and gear transmission mechanism is connected with the input end of the inner geneva wheel indexing mechanism. According to the miniature screw feeding system, the space needed by the system is reduced to a great extent, the requirement for the space on an automatic production line is remarkably reduced, the whole miniature screw feeding system is more compact in layout, arrangement and use in the production environment with the limited space are better facilitated, and the production efficiency is improved. And great convenience is provided for optimization and layout adjustment of an automatic production line.

Description

Technical Field

[0001] The invention relates to the technical field of screw feeding devices, in particular to a double-station micro screw feeding device with improved transmission and indexing devices. Background Art

[0002] In modern manufacturing, micro screw feeding systems are widely used in manual and automated product assembly workstations and assembly lines. The main function of this system is to arrange the small screws piled together in an orderly manner according to a predetermined rule, and transport them one by one to the designated position, and then the micro screws are delivered to the target position by the suction system. For small screws with a diameter of less than M1.6, there is a relatively mature vacuum adsorption nail feeding system. The basic working principle of this system is: the screws in the silo are stirred by a turntable, and the holes around the turntable have vacuum adsorption force and match the screw size to adsorb and fix the screws. When the turntable rotates, the screws are moved to the designated position, and a vacuum detection sensor is equipped at the position to determine whether the screw is successfully adsorbed. When the sensor detects that the vacuum value reaches the set standard, it can be confirmed that the screw is at the designated position; if it does not reach the standard, it means that there is no screw at that position. However, the current vacuum adsorption micro screw feeding system has defects such as fluctuations in screw feeding efficiency, complex adjustment process and high cost. In the context of a society that increasingly attaches importance to production efficiency and cost control, it is urgent to improve and innovate. Summary of the invention

[0003] In order to solve at least one technical problem in the background technology, the present invention provides a double-station micro screw feeding device with an improved transmission and indexing device, which greatly reduces the space required for the system and significantly reduces the demand for space on the automated production line, making the entire micro screw feeding system more compact in layout, and more conducive to arrangement and use in a production environment with limited space, providing great convenience for the optimization and layout adjustment of the automated production line.

[0004] To achieve the above-mentioned purpose, the present invention provides a double-station micro-screw feeding device with an improved transmission and indexing device, comprising: an outer shell, a vacuum adsorption type micro-screw feeding module, an inner groove wheel indexing mechanism and a worm gear transmission mechanism; the vacuum adsorption type micro-screw feeding module is installed on both sides of the inner shell; the worm gear transmission mechanism is installed in the middle position of the inner shell, the inner groove wheel indexing mechanism is rotatably connected in the vacuum adsorption type micro-screw feeding module, and the output end of the worm gear transmission mechanism is connected to the input end of the inner groove wheel indexing mechanism.

[0005] Furthermore, the worm gear transmission mechanism includes: a servo motor, a coupling, a worm, a worm wheel, a transmission mechanism support seat, an active transmission shaft and a universal joint; the servo motor is fixedly installed at the bottom end of the inner part of the shell, the output end of the servo motor is connected to the worm through a coupling, the worm is connected to the worm wheel for transmission, the transmission mechanism support seat is installed at the bottom end of the inner part of the shell, the active transmission shaft is rotatably connected to the transmission mechanism support seat through a bearing and is limited by a shaft clamp, and the worm wheel is connected to the universal joint through the active transmission shaft.

[0006] Furthermore, the universal joint comprises: an external spline connecting shaft, a connecting block and a driven rotating shaft of the universal joint; two opposite surfaces of the connecting block are rotationally connected to the external spline connecting shaft, and the other two opposite surfaces are rotationally connected to the driven rotating shaft of the universal joint.

[0007] Furthermore, the inner groove wheel indexing mechanism includes: an indexing mechanism power input shaft support seat, an indexing mechanism power input shaft, an indexing mechanism active shaft, a transmission paddle, a positioning sector and a driven turntable; the driven turntable is rotatably connected to the vacuum adsorption type micro screw feeding module, the indexing mechanism power input shaft support seat is installed at the bottom end of the outer shell, and the indexing mechanism power input shaft is rotatably connected to the indexing mechanism power input shaft support seat through a bearing; one end of the indexing mechanism power input shaft is connected to the universal joint driven shaft through a locating pin, and the other end is connected to the indexing mechanism active shaft, and a transmission paddle and a positioning sector are connected to the indexing mechanism active shaft; a plurality of clearance grooves matching the transmission paddle are evenly distributed on the circumference of the driven turntable.

[0008] Furthermore, the vacuum adsorption type micro screw feeding module includes: a first material bin and a second material bin, the first material bin and the second material bin are symmetrically installed on both sides of the inside of the shell through a material box base; and a first discharge port is arranged on the top of the first material bin, and a second discharge port is arranged on the top of the second material bin.

[0009] Furthermore, the shell includes: a bottom cover plate, a front end cover plate, a rear end cover plate, a side end cover plate and an upper end cover plate; the front end cover plate, the rear end cover plate and the two side end cover plates form a rectangular frame, the rectangular frame is installed on the surrounding side of the top of the bottom end cover plate, and two upper end cover plates are installed on the top of the rectangular frame, and the two upper end cover plates are respectively opposite to the first discharge port and the second discharge port.

[0010] Furthermore, a handle is installed on the upper cover plate.

[0011] Furthermore, control buttons, a display screen, an indicator light and a control panel are installed on the front cover plate and the rear cover plate, and the control panel is provided with a power input port, a data line interface, a power switch and an air pipe joint.

[0012] The beneficial effects of the present invention are:

[0013] (1) A power transmission scheme based on a worm gear transmission mechanism is adopted, through which the system power can be transmitted to the double-row nail suction system by a servo motor. The advantage of this scheme is that it can reduce the number of gear transmission pairs and the number of servo motors required, thereby effectively reducing the system cost.

[0014] (2) The present invention realizes a multi-station one-stop micro screw feeding device, which has unique functional advantages and can provide different types of micro screws to multiple workstations at the same time to meet diverse assembly needs.

[0015] (3) In this device, a double-row nail feeding scheme is used, and the information or data about the presence or absence of screws at each outlet can be exchanged with the workstation or assembly line. Through this data exchange method, the time the workstation or assembly line waits for screws can be greatly reduced, making the entire nail feeding process more stable and efficient, avoiding time waste and production delays caused by waiting for screws.

[0016] (4) This device adopts a worm gear transmission mechanism and an inner groove wheel indexing mechanism. The use of these two mechanisms greatly reduces the space required for the system and significantly reduces the space demand on the automated production line, making the entire micro screw feeding device more compact in layout and more conducive to layout and use in a production environment with limited space, providing great convenience for the optimization and layout adjustment of the automated production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an assembly diagram of the nail feeding device of the present invention when it is in a 45° state;

[0018] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 3 This is a 45° internal assembly diagram of the nail feeding device of the present invention;

[0020] Figure 4 This is a top view of the interior of the nail feeding device of the present invention;

[0021] Figure 5 This is an internal cross-sectional view of the nail feeding device of the present invention;

[0022] Figure 6 This is a front view of the internal state assembly of the nail feeding device of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the worm gear transmission mechanism of the present invention;

[0024] Figure 8 An exploded view of the worm gear transmission mechanism of the present invention;

[0025] Fig. 9 This is a diagram of the inner groove wheel indexing mechanism of the present invention starting to work;

[0026] Fig.10 It is a state diagram of the inner groove wheel indexing mechanism of the present invention during operation;

[0027] Fig.11 This is a diagram showing the end of the working state of the inner groove wheel indexing mechanism of the present invention;

[0028] Fig.12 This is a diagram of the universal joint assembly of the present invention.

[0029] In the figure: 1. Front cover; 2. Upper cover; 3. Display screen; 4. Control button; 5. Power input port; 6. Data line interface; 7. Power switch; 8. Air pipe joint; 9. Vacuum adsorption micro screw feeding module; 10. Material box base; 11. Transmission mechanism support seat; 12. Universal joint; 13. Inner groove wheel indexing mechanism; 14. Worm gear; 15. Worm; 16. Indexing mechanism power input shaft; 17. Bottom cover; 18. Indexing mechanism power input shaft support seat; 19 , servo motor; 20, first silo; 21, first discharge port; 22, coupling; 23, second discharge port; 24, second silo; 25, positioning pin; 26, bearing; 27, shaft clamp; 28, active transmission shaft; 29, driven turntable; 30, active shaft of indexing mechanism; 31, transmission paddle; 32, positioning sector; 33, external spline connecting shaft; 34, connecting block; 35, driven shaft of universal joint; 36, worm gear transmission mechanism; 37, side end cover; 38, handle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0033] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it 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 it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] To achieve the above purpose, Figure 1-12As shown, the present invention provides a double-station micro screw feeding device with an improved transmission and indexing device, comprising: a housing, a vacuum adsorption type micro screw feeding module 9, an inner groove wheel indexing mechanism 13 and a worm gear transmission mechanism 36; the vacuum adsorption type micro screw feeding module 9 is installed on both sides of the interior of the housing; the worm gear transmission mechanism 36 is installed in the middle position of the interior of the housing, the inner groove wheel indexing mechanism 13 is rotatably connected in the vacuum adsorption type micro screw feeding module 9, and the output end of the worm gear transmission mechanism 36 is connected to the input end of the inner groove wheel indexing mechanism 13. The worm gear transmission mechanism is responsible for transmitting power to various required parts, the inner groove wheel indexing mechanism is used to achieve precise intermittent motion, and the vacuum adsorption type micro screw feeding module is used to store and supply screws.

[0036] The present invention can solve the problem of fluctuation in screw feeding efficiency: by adopting a worm gear transmission mechanism and an inner groove wheel indexing mechanism, the stability and efficiency of screw feeding are improved, and efficiency fluctuation is reduced. The problem of complex adjustment process: the transmission scheme has a compact structure and relatively simple adjustment, which reduces the complexity of the adjustment process. The problem of high cost: the use of a power transmission scheme based on a motor-worm gear can reduce the number of transmission pairs of gears and the number of motors required, thereby effectively reducing system costs.

[0037] The worm gear transmission mechanism includes: a servo motor 19, a coupling 22, a worm 15, a worm wheel 14, a transmission mechanism support seat 11, an active transmission shaft 28 and a universal joint 12; the servo motor 19 is fixedly installed at the bottom end of the housing, the output end of the servo motor 19 is connected to the worm 15 through the coupling 22, the worm 15 is connected to the worm wheel 14 in a transmission connection, the transmission mechanism support seat 11 is installed at the bottom end of the housing, the active transmission shaft 28 is connected to the transmission mechanism support seat 11 in rotation through a bearing 26, and is limited by a shaft clamp 27, and the worm wheel 14 is connected to the universal joint 12 through the active transmission shaft 28. The entire worm gear transmission mechanism is fixed and supported by the transmission mechanism support seat, ensuring the stability and accuracy of power transmission.

[0038] The universal joint 12 includes: an external spline connecting shaft 33, a connecting block 34 and a universal joint driven shaft 35; two opposite surfaces of the connecting block 34 are rotatably connected to the external spline connecting shaft 33, and the other two opposite surfaces are rotatably connected to the universal joint driven shaft 35. Through the ingenious connection and coordination of these components, the universal joint can realize flexible transmission of power at different angles and directions, ensuring the stability and reliability of the transmission system.

[0039] The inner groove wheel indexing mechanism comprises: an indexing mechanism power input shaft support seat 18, an indexing mechanism power input shaft 16, an indexing mechanism active shaft 30, a transmission paddle 31, a positioning sector 32 and a driven turntable 29; the driven turntable 29 is rotatably connected with the vacuum adsorption type micro screw feeding module, the indexing mechanism power input shaft support seat 18 is installed at the bottom of the inner shell, and the indexing mechanism power input shaft 16 is rotatably connected with the indexing mechanism power input shaft support seat 18 through a bearing; one end of the indexing mechanism power input shaft 16 is connected with the universal joint driven shaft 35 through a positioning pin 25, and the other end is connected with the indexing mechanism active shaft 30, and the indexing mechanism active shaft 30 is connected with a transmission paddle 31 and a positioning sector 32; the driven turntable 29 is evenly distributed with a plurality of clearance grooves matching with the transmission paddle 31. The power transmitted by the worm gear transmission mechanism drives the indexing mechanism active shaft to move, thereby driving the driven turntable to realize the positioning function. The transmission ratio of the worm gear transmission mechanism and the inner groove wheel indexing mechanism needs to be determined according to actual conditions.

[0040] Fig. 9 The inner groove wheel indexing mechanism starts to work. When the inner groove wheel indexing mechanism starts to work, the active shaft of the inner groove wheel indexing mechanism drives the transmission paddle 31 to move, the transmission paddle 31 enters the gap groove, and the positioning sector 32 starts to separate from the outer wall of the disc, realizing the intermittent rotation of the driven transmission shaft 29; Fig.10 In the working state diagram of the inner groove wheel indexing mechanism, the paddle 31 continues to enter the gap groove to drive the movement of the driven rotating disk 29, and the positioning sector 32 does not contact the outer wall of the disk and is in an idle state; Fig.11 The inner groove wheel indexing mechanism ends the working state diagram, and the paddle 31 leaves the gap groove. At this time, the positioning sector begins to contact the outer wall of the driven turntable to ensure the accuracy of the driven turntable.

[0041] The power transmission process of the inner groove wheel indexing mechanism begins with the worm gear transmission mechanism. After the worm gear decelerates the rotational power of the servo motor and increases the torque, it is transmitted to the power input shaft of the indexing mechanism through the universal joint. The power input shaft of the inner groove wheel indexing mechanism further transmits the power to the transmission paddle, which is periodically inserted into the gap groove of the driven turntable, thereby driving the driven turntable to achieve intermittent motion. When the driven turntable rotates 22.5°, the transmission paddle disengages the gap groove. At this time, the positioning device on the outer wall of the driven turntable is activated, and the driven turntable is accurately positioned at a predetermined angle by mechanical locking or friction locking.

[0042] In the assembly relationship of the inner groove wheel indexing mechanism, the worm gear is connected to the servo motor, and the stable transmission of power is ensured through axial and radial connections. The universal joint connects the worm gear output shaft and the active transmission shaft, allowing the power to be transmitted in different axial directions. The power input shaft of the inner groove wheel indexing mechanism is connected to the transmission paddle through a key connection, and the transmission paddle cooperates with the gap groove of the driven turntable of the inner groove wheel indexing mechanism. The positioning device fixes the driven turntable at a precise angular position through mechanical locking.

[0043] There are two key limit positions in the working process of the inner groove wheel indexing mechanism. The first limit position is the rotation driving state of the driven turntable. At this time, the transmission paddle is inserted into the gap groove of the driven turntable, and the worm gear transmits power through the universal joint and the power input shaft to drive the driven turntable to rotate 22.5°. The engagement of the transmission paddle and the gap groove ensures the smooth rotation of the driven turntable, while the self-locking property of the worm gear prevents the driven turntable from malfunctioning due to external force in the non-driven state.

[0044] The second extreme position is the positioning state of the driven turntable. When the transmission paddle is out of the gap slot, the driven turntable stops rotating and the positioning device is activated. The positioning device fixes the driven turntable at a precise angular position by mechanical locking or friction locking. This positioning mechanism ensures that the driven turntable can accurately stay in the predetermined position after each rotation, providing high-precision beat control for subsequent material conveying or processing operations.

[0045] Through the working principle of the above-mentioned power transmission and indexing mechanism, combined with the positioning and rotation drive mechanism under the two extreme positions, the indexing mechanism realizes efficient and precise intermittent motion, meeting the high-precision requirements in the material transportation and processing process.

[0046] The vacuum adsorption type micro screw feeding module includes: a first material bin 20 and a second material bin 24, which are symmetrically installed on both sides of the shell through the material bin base 10; and a first discharge port 21 is arranged on the top of the first material bin 20, and a second discharge port 23 is arranged on the top of the second material bin 24. The first discharge port 21 and the second discharge port 23 are used for the output of screws. Each feeding module is equipped with an independent vacuum adsorption system, and the positions of the first discharge port 21 and the second discharge port 23 are optimized according to the working trajectory of the workstation robot arm, which can realize the synchronous feeding of double stations. An error compensation system is set between the two modules to eliminate the cumulative operation error through real-time communication to ensure the synchronization of double-row conveying.

[0047] The housing includes: a bottom cover plate 17, a front cover plate 1, a rear cover plate, a side cover plate 37 and an upper cover plate 2; the front cover plate 1, the rear cover plate and the side cover plates 37 form a rectangular frame, the rectangular frame is installed on the circumference of the top of the bottom cover plate 17, and two upper cover plates 2 are installed on the top of the rectangular frame, and the two upper cover plates 2 are respectively opposite to the first discharge port 21 and the second discharge port 23. A handle 38 is installed on the upper cover plate 2, and the handle is provided to facilitate the filling of the first and second bins and the repair of the machine.

[0048] The front cover plate 1 and the rear cover plate are both equipped with control buttons 4, display screens 3, and indicator lights to realize operation control and status display of the device. The front cover plate 1 and the rear cover plate are also equipped with a control panel, which is provided with a power input port 5, a data line interface 6, a power switch 7, and a gas pipe joint 8 to facilitate power access, data transmission, and gas line connection of the device.

[0049] The present invention also provides a feeding method of a double-row micro screw feeder based on worm gear transmission, comprising:

[0050] Start the servo motor, drive the worm to drive the worm wheel to rotate, and drive the inner groove wheel indexing mechanism through the universal joint to drive the vacuum adsorption type micro screw feeding module to start working. When any vacuum adsorption type micro screw feeding module detects that a screw is in place, its controller receives the signal and gives two signals. The first signal is sent to the servo motor to control it to stop rotating, so that the worm gear transmission mechanism stops working. The second signal is sent to the master controller of the workstation / assembly line to notify it that the material in any vacuum adsorption type micro screw feeding module is ready and is in a state of waiting for material collection;

[0051] When the material to be taken in any vacuum adsorption micro screw feeding module is taken away, its controller receives the signal and sends a signal to the servo motor to notify it to start and start rotating to carry out the next material taking action.

[0052] When both vacuum adsorption micro screw feeding modules have parts to be picked up, the parts are picked up in the order in which they are queued.

[0053] Technical problems that can be solved by the present invention: (1) Worm gear transmission mechanism: power and motion are transmitted through the meshing of the worm and the worm wheel to achieve a larger transmission ratio, and can be combined with a universal shaft transmission to transmit power in a complex spatial layout while maintaining a compact structure. (2) Inner groove wheel indexing mechanism: the active shaft of the indexing mechanism is driven to move through the transmission power of the gear, thereby driving the driven turntable to realize the positioning function, which can achieve accurate angle control and is suitable for high-precision positioning automation equipment. (3) Adaptation to complex spatial layout: the universal joint can flexibly adjust the direction of the transmission shaft, so that the worm gear transmission mechanism can be applied to complex mechanical structures where the input shaft and the output shaft are not on the same plane or axis, to achieve double-station nail feeding. (4) Smooth transmission and low noise: the worm gear transmission mechanism adopts a line contact method, the tooth surface meshing is smooth, there is almost no impact and vibration during the transmission process, and the noise is low. The flexibility of the universal joint further ensures the smoothness of power transmission.

[0054] The working principle and process of the nail feeding device based on worm gear transmission are as follows:

[0055] (1) After the system is started, the driving mechanism drives the inner groove wheel indexing mechanism to operate through the worm gear transmission mechanism. The servo motor serves as the power source, and its output shaft is fixedly connected to the worm, which meshes with the worm wheel. The worm wheel is installed on the transmission shaft and transmits power to the inner groove wheel indexing mechanism through the universal joint, driving the driven turntable of the inner groove wheel indexing mechanism to start rotating. At this time, the driven turntable is in the first extreme position, and the transmission paddle begins to insert into the gap groove of the driven turntable and rotates through the power given by the universal joint. When the transmission paddle works, the positioning fan does not fit the outer wall of the driven turntable, so that the driven turntable rotates the required angle. At this time, the driven turntable enters the second extreme position, the transmission paddle disengages from the gap groove, and the positioning fan begins to mesh and rotate with the outer wall of the driven turntable, ensuring that the driven turntable stays at the predetermined position so that the material is in place.

[0056] (2) Material in-place detection and locking: When the photoelectric sensors in any group of vacuum adsorption micro screw feeding modules detect that the screws are in place, the main control unit immediately outputs two instructions. The first instruction cuts off the power supply circuit of the servo motor through a pulse signal, causing the motor to stop rotating. Since the worm gear transmission mechanism is self-locking, the worm gear transmission mechanism enters a locked state to ensure that the driven turntable remains stationary in the current position. The second instruction feeds back the material in-place information to the central control system through the CAN bus communication method, marking the station as being ready for picking operations.

[0057] (3) Material removal and refilling: When the visual recognition system confirms that the adsorbed material at a certain workstation has been removed by the robot arm, the corresponding control module generates a restart command and activates the servo motor to perform a preset angular displacement movement. The servo motor restarts and transmits power to the drive shaft through the worm gear transmission mechanism. The drive shaft then drives the driven turntable of the inner groove wheel indexing mechanism to rotate to a preset angle through the universal joint to implement subsequent refilling operations.

[0058] (4) Dual-station collaborative operation: If the photoelectric sensors of the two sets of vacuum adsorption micro screw feeding modules synchronously trigger the material in place signal, the system automatically triggers the queue management mechanism based on the preset priority. The main control unit dynamically allocates the material picking sequence and coordinates the actions of the two sets of vacuum adsorption micro screw feeding modules to avoid action interference during dual-station collaborative operation. In this process, the servo motor accurately controls the actions of the worm gear transmission mechanism and the inner groove wheel indexing mechanism according to the instructions of the main control unit to ensure the beat accuracy of material transportation.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A double-station micro screw feeding device with improved transmission and indexing device, characterized in that: include: An outer shell, a vacuum adsorption type micro screw feeding module (9), an inner groove wheel indexing mechanism (13) and a worm gear transmission mechanism (36); the vacuum adsorption type micro screw feeding module (9) is installed on both sides of the inner shell; the worm gear transmission mechanism (36) is installed in the middle position of the inner shell; the inner groove wheel indexing mechanism (13) is rotatably connected in the vacuum adsorption type micro screw feeding module (9); and the output end of the worm gear transmission mechanism (36) is connected to the input end of the inner groove wheel indexing mechanism (13).

2. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 1, characterized in that: The worm gear transmission mechanism comprises: a servo motor (19), a coupling (22), a worm (15), a worm wheel (14), a transmission mechanism support seat (11), an active transmission shaft (28) and a universal joint (12); the servo motor (19) is fixedly mounted at the bottom end of the housing, the output end of the servo motor (19) is connected to the worm (15) through the coupling (22), the worm (15) is transmission-connected to the worm wheel (14), the transmission mechanism support seat (11) is mounted at the bottom end of the housing, the active transmission shaft (28) is rotationally connected to the transmission mechanism support seat (11) through a bearing (26), and is limited by a shaft clamp (27), and the worm wheel (14) is connected to the universal joint (12) through the active transmission shaft (28).

3. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 2, characterized in that: The universal joint (12) comprises: an external spline connecting shaft (33), a connecting block (34) and a universal joint driven rotating shaft (35); two opposite surfaces of the connecting block (34) are rotationally connected to the external spline connecting shaft (33), and the other two opposite surfaces are rotationally connected to the universal joint driven rotating shaft (35).

4. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 3, characterized in that: The inner groove wheel indexing mechanism comprises: an indexing mechanism power input shaft support seat (18), an indexing mechanism power input shaft (16), an indexing mechanism active shaft (30), a transmission paddle (31), a positioning sector (32) and a driven turntable (29); the driven turntable (29) is rotatably connected to the vacuum adsorption type micro screw feeding module, the indexing mechanism power input shaft support seat (18) is installed at the bottom end of the inner shell, and the indexing mechanism power input shaft (16) is connected to the driven turntable (29) by the driving paddle (31). The bearing is rotatably connected to the indexing mechanism power input shaft support seat (18); one end of the indexing mechanism power input shaft (16) is connected to the universal joint driven shaft (35) through a positioning pin (25), and the other end is connected to the indexing mechanism active shaft (30), and the indexing mechanism active shaft (30) is connected with a transmission paddle (31) and a positioning sector (32); a plurality of clearance grooves matching with the transmission paddle (31) are evenly distributed on the circumference of the driven rotating disk (29).

5. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 1, characterized in that: The vacuum adsorption type micro screw feeding module comprises: a first material bin (20) and a second material bin (24), wherein the first material bin (20) and the second material bin (24) are symmetrically installed on both sides of the interior of the shell through a material bin base (10); and a first discharge port (21) is arranged at the top of the first material bin (20), and a second discharge port (23) is arranged at the top of the second material bin (24).

6. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 5, characterized in that: The housing comprises: a bottom cover plate (17), a front end cover plate (1), a rear end cover plate, a side cover plate (37) and an upper end cover plate (2); the front end cover plate (1), the rear end cover plate and the side end cover plates (37) form a rectangular frame, the rectangular frame is mounted on the circumference of the top of the bottom end cover plate (17), and two upper end cover plates (2) are mounted on the top of the rectangular frame, and the two upper end cover plates (2) are respectively opposite to the first discharge port (21) and the second discharge port (23).

7. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 6, characterized in that: A handle (38) is installed on the upper end cover plate (2).

8. A double-station micro screw feeding device with improved transmission and indexing device as claimed in claim 6, characterized in that: The front cover plate (1) and the rear cover plate are both equipped with control buttons (4), a display screen (3), an indicator light and a control panel, and the control panel is provided with a power input port (5), a data line interface (6), a power switch (7) and a trachea joint (8).

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