High-speed pre-threading equipment for filter screws and nuts

Abstract

The present invention relates to a high-speed pre-threading device for filter screws and nuts, comprising a rotational positioning mechanism, a nut-upper mechanism and a pre-threading screw mechanism; the rotational positioning mechanism comprises a rotatable turntable, on the same circumference of which two nut grooves matching the nuts are provided, and the two nut grooves are symmetrically arranged; the upper nut mechanism and the pre-threading screw mechanism are respectively opposite to the two nut grooves; wherein the upper nut mechanism is used to put nuts into the nut grooves, and the pre-threading screw mechanism is used to pre-thread the screws onto the nuts. It also comprises a screw-nut overall pre-installation mechanism, which is opposite to the motion trajectory of the nut grooves, and is used to pre-install the pre-threaded screw nut as a whole on the filter. The present invention is used to solve the problems of slow pre-threading speed and low efficiency of filter screw-nut pre-threading in the prior art.

Description

Technical Field

[0001] The invention belongs to the technical field of filter assembly, and in particular relates to a high-speed pre-threading device for a filter screw and nut. Background Art

[0002] Since the beginning of telecommunications development, filters have played an important role in circuits and have made continuous progress with the development of communication technology. In the field of modern communication technology, there is almost no branch that is not affected by digital filtering technology. Source coding, channel coding, modulation, multiplexing, data compression, and adaptive channel equalization all widely use digital filters, especially in digital communication, network communication, image communication and other applications. Without filters, it is almost impossible to move forward. With the advent of the 5G era, new communication systems require the development of a technology that can extract and detect signals within a specific frequency band. The development of this technology has further accelerated the research and development of filter technology, and new 5G filters are already in intensive production. The filter is a microwave device that limits the operating frequency band of the base station. It is divided into four types according to the frequency band of the signal passing through: low-pass, high-pass, band-pass, and band-stop filters. Each filter has a preset frequency range. In the test device, the frequency selection function of the filter can be used to filter out interference noise or perform spectrum analysis.

[0003] The filter needs to be adjusted to the appropriate frequency for signals in different bands so that the filter can transmit the signal of the required frequency. There are multiple tuning screws installed on the filter, and the height of these tuning screws on the filter surface is used to transmit signals of different frequencies. First, the screws and nuts must be assembled into a cavity filter. After the production and assembly are completed, the cavity filter needs to be tuned, and the length of the screw in the cavity is adjusted to adjust the resonant frequency of the cavity filter to achieve the performance indicators required by the cavity filter. After the screw is adjusted into place, the nut needs to be locked.

[0004] In the prior art, it is usually done manually. First, the screw and the nut are manually screwed together, and then the screw with the nut is screwed onto the filter. The main problems with manual operation are as follows: first, the manual speed is slow and the efficiency is low; second, manual operation will cause uneven pre-wearing assembly, affecting the subsequent cavity filter debugging process. At present, a few companies have made attempts in automation, such as: CN103624539A-Automatic assembly process and device for microwave filter tuning screws and CN205587942U-A screw and nut assembly device for filter cover plates, but the improvement in efficiency is limited. Summary of the invention

[0005] The object of the present invention is to provide a filter screw nut high-speed pre-threading device, which is used to solve the problems of slow filter screw nut pre-threading speed and low efficiency in the prior art.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A filter screw nut high-speed pre-threading device, characterized by comprising:

[0008] A rotation positioning mechanism 100, the rotation positioning mechanism 100 comprising a rotatable turntable 120, two nut grooves matching with nuts are provided on the same circumference of the turntable 120, and the two nut grooves are symmetrically arranged; and

[0009] The upper nut mechanism 300 and the pre-threading screw mechanism 400 are respectively opposite to the two nut grooves; the upper nut mechanism 300 is used to put the nut into the nut groove, and the pre-threading screw mechanism 400 is used to pre-thread the screw onto the nut.

[0010] Furthermore, the pre-piercing screw mechanism 400 includes a first lifting module 410 and a second lifting module 420; the second lifting module 420 is provided with a cutting block translation driving module 421, a screw feeding pipe 424 and a screw feeding pipe 425, the movable end of the cutting block translation driving module 421 is provided with a cutting block 422, and the cutting block 422 is provided with a feeding hole 423; the screw feeding pipe 424 and the screw feeding pipe 425 are respectively located at the cutting block 422. On the upper and lower sides, when the cutting block 422 reciprocates and translates, the discharge hole 423 is alternately connected with the screw feeding tube 424 and the screw discharge tube 425 respectively; a pre-pierced electric batching rod is installed on the first lifting module 410, and the pre-pierced electric batching rod is opposite to the screw discharge tube 425; the second lifting module 420 is also provided with a screw clamp 430, and the screw clamp 430 is located at the lower end of the screw discharge tube 425, and is used to clamp the screw falling from the screw discharge tube 425.

[0011] Furthermore, the device also includes a screw and nut integral pre-installation mechanism 500, which is opposite to the movement trajectory of the nut groove and is used to pre-install the pre-pierced screw and nut as a whole on the filter; the edge of the turntable 120 is provided with two outwardly protruding nut placement parts 121, and the two nut grooves are respectively arranged on the two nut placement parts 121.

[0012] Furthermore, the screw and nut integral pre-assembly mechanism 500 includes a third lifting module 510 and a fourth lifting module 520, the third lifting module 510 is provided with a pre-assembly electric sleeve, the fourth lifting module 520 is provided with a pre-assembly electric screw rod, and the pre-assembly electric screw rod is coaxially inserted in the pre-assembly electric sleeve.

[0013] Furthermore, the fourth lifting module 520 is installed on the third lifting module 510 .

[0014] Furthermore, the pre-installed electric sleeve includes a sleeve 530 and a fourth drive motor 531 transmission-connected to the sleeve 530; the pre-installed electric sleeve also includes an adsorption mechanism, which includes a sleeve 541 sleeved in the middle of the sleeve 530, and a suction air path 540 is provided on the sleeve 541; the inner diameters of the upper and lower ends of the sleeve 530 match the outer diameters of the upper and lower ends of the pre-installed electric batch rod, and the inner diameter of the middle part of the sleeve 530 is larger than the inner diameters of the upper and lower ends, forming an annular chamber with the pre-installed electric batch rod; a plurality of first air holes 535 are circumferentially provided in the middle part of the sleeve 530, connecting the suction air path 540 and the chamber; a plurality of axially arranged second air holes 536 are provided in the lower part of the sleeve 530, which are used to connect the chamber and the lower end surface of the sleeve 530.

[0015] Furthermore, the screw nut integral pre-assembly mechanism 500 is directly opposite to the intersection of the nut groove motion trajectory and the line connecting the two nut grooves.

[0016] Furthermore, the rotation positioning mechanism 100 also includes a work station plate 110, and the work station plate 110 is located above the turntable 120; the work station plate 110 is provided with a first drive motor 130, which passes through the work station plate 110 and is transmission-connected to the turntable 120; the work station plate 110 is provided with an upper nut station 111, a pre-screw station 112 and an overall pre-installation station 113 corresponding to the upper nut mechanism 300, the pre-screw mechanism 400 and the screw-nut overall pre-installation mechanism 500.

[0017] Furthermore, the nut station 111, the pre-screw station 112 and the overall pre-installation station 113 on the work plate 110 are respectively an open groove, a through hole and a through hole, and the two through holes are connected by a track groove 114; a screw detection sensor 140 is also provided at the overall pre-installation station 113 on the work plate 110, which is used to detect whether there is a screw when the pre-pierced screw and nut are rotated to this station as a whole.

[0018] Furthermore, the device also includes a nut orientation mechanism 200, which is used to provide nuts with uniform directions to the upper nut mechanism 300; the nut orientation mechanism 200 includes a slide 202, an orientation block 203 is provided at the exit of the slide 202, a nut orientation slot 208 is provided on the orientation block 203, the opening direction of the nut orientation slot 208 is toward the exit of the slide 202, and the bottom shape of the nut orientation slot 208 matches the shape of the nut; the nut orientation mechanism 200 also includes a nut translation Manipulator 205, the nut translation manipulator 205 is provided with a pin 204 for inserting into the nut at the exit of the slide 202; the directional block 203 is connected to the movable end of a directional block translation drive module 206, and reciprocates left and right at the exit of the slide 202; a cover plate 209 is provided above the exit of the slide 202, and a limiting hole 210 matching the diameter and movement trajectory of the pin 204 is provided on the cover plate 209; a nut detection sensor 207 is also provided at the entrance end of the slide 202.

[0019] The beneficial effects of the present invention are as follows: the present invention provides three workstations, which can simultaneously complete the installation of nuts, pre-threading of screws and pre-installation of the whole onto the filter, thereby greatly improving the work efficiency and solving the problems of slow pre-threading speed and low efficiency of screw and nut pre-threading of filters in the prior art. In addition, a set of nut orientation mechanisms is provided, so that the nuts always keep one direction, which is convenient for installing nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the filter screw nut high-speed pre-threading equipment.

[0021] Figure 2 It is a partial structural schematic diagram of the filter screw nut high-speed pre-threading equipment.

[0022] Figure 3 It is a top perspective schematic diagram of the rotary positioning mechanism.

[0023] Figure 4 It is a bottom-up stereoscopic schematic diagram of the rotary positioning mechanism.

[0024] Figure 5 It is an overall schematic diagram of the pre-threading screw mechanism.

[0025] Figure 6 It is a partial structural schematic diagram of the pre-piercing screw mechanism.

[0026] Figure 7 It is a partial structural cross-sectional schematic diagram of the pre-piercing screw mechanism.

[0027] Figure 8 It is a schematic diagram of the internal structure of part of the pre-threading screw mechanism.

[0028] Fig. 9It is an overall schematic diagram of the screw and nut integral pre-assembly mechanism.

[0029] Fig.10 It is a partial schematic diagram of the screw and nut overall pre-assembly mechanism.

[0030] Fig.11 yes Fig.10 Schematic diagram of the BB cross-section.

[0031] Fig.12 yes Fig.11 The lower part of the enlarged schematic diagram is shown in FIG.

[0032] Fig.13 yes Fig.10 Schematic diagram of the top view.

[0033] Fig.14 It is a schematic diagram of the coordination of the upper nut mechanism, the nut orientation mechanism and the rotation positioning mechanism.

[0034] Fig.15 It is an overall schematic diagram of the nut orientation mechanism.

[0035] Fig.16 It is a partial schematic diagram of the nut orientation mechanism.

[0036] Fig.17 It is a structural diagram of the directional block.

[0037] Fig.18 It is a partial schematic diagram of the nut orientation mechanism.

[0038] In the figure: 100-rotation positioning mechanism, 110-station plate, 111-nut loading station, 112-screw pre-threading station, 113-integral pre-installation station, 114-track groove; 120-turntable, 121-nut placement part; 130-first drive motor; 140-screw detection sensor;

[0039] 200-nut orientation mechanism, 201-bracket, 202-slideway, 203-orientation block, 204-pin, 205-nut translation manipulator, 206-orientation block translation drive module, 207-nut detection sensor, 208-nut orientation slot, 209-cover plate, 210-limiting hole;

[0040] 300-upper nut mechanism,

[0041] 400-pre-piercing screw mechanism, 410-first lifting module, 411-second drive motor, 412-pre-piercing batch rod, 420-second lifting module, 421-cutting block translation drive module, 422-cutting block, 423-feeding hole, 424-screw feeding pipe, 425-screw feeding pipe; 430-screw clamp;

[0042] 500-screw and nut integral pre-installation mechanism, 510-third lifting module; 520-fourth lifting module, 521-third drive motor, 522-pre-installed batch rod; 530-sleeve, 531-fourth drive motor, 532-belt and pulley assembly, 533-hollow shaft, 534-first bearing, 535-first ventilation hole, 536-second ventilation hole; 540-suction air path, 541-sleeve, 542-second bearing. DETAILED DESCRIPTION

[0043] In order to better understand the present invention, the technical solution of the present invention is further described below in conjunction with embodiments.

[0044] Embodiment 1

[0045] like Figure 1 , 2 As shown, a filter screw and nut high-speed pre-threading device includes a rotation positioning mechanism 100, a nut upper mechanism 300 and a pre-threading screw mechanism 400.

[0046] like Figure 3 , 4 As shown, the rotation positioning mechanism 100 includes a rotatable turntable 120 , and two nut grooves matching the nut shape are provided on the same circumference of the turntable 120 , and the two nut grooves are symmetrically arranged.

[0047] like Figure 1 , 2 As shown, the upper nut mechanism 300 and the pre-threading screw mechanism 400 are respectively opposite to the two nut grooves; the upper nut mechanism 300 is used to put the nut into the nut groove, and the pre-threading screw mechanism 400 is used to pre-thread the screw on the nut.

[0048] like Figure 2 As shown, the upper nut mechanism 300 includes a translation cylinder and a lifting cylinder, and a suction cup is provided on the lifting cylinder.

[0049] like Figure 5-8As shown, the pre-piercing screw mechanism 400 includes a first lifting module 410 and a second lifting module 420; the second lifting module 420 is provided with a cutting block translation drive module 421, a screw feeding tube 424 and a screw unloading tube 425, the movable end of the cutting block translation drive module 421 is provided with a cutting block 422, and the cutting block 422 is provided with a unloading hole 423; the screw feeding tube 424 and the screw unloading tube 425 are respectively located on the upper and lower sides of the cutting block 422, when the cutting block 422 reciprocates, the unloading hole 423 is alternately connected with the screw feeding tube 424 and the screw unloading tube 425 respectively; the first lifting module 410 is installed with a pre-piercing electric batching rod (including a second drive motor 411 installed on the second lifting module 420 and a pre-piercing batching rod 412 installed on the second drive motor 411), and the pre-piercing electric batching rod is directly opposite to the screw unloading tube 425. The second lifting module 420 is further provided with a screw clamp 430 . The screw clamp 430 is located at the lower end of the screw discharge tube 425 and is used to clamp the screw dropped from the screw discharge tube 425 .

[0050] Embodiment 2

[0051] On the basis of the first embodiment, the device further comprises a screw and nut integral pre-installation mechanism 500. The screw and nut integral pre-installation mechanism 500 is directly opposite to the intersection of the nut groove motion trajectory and the line connecting the two nut grooves.

[0052] like Figure 1 As shown, the screw and nut integral pre-installation mechanism 500 is opposite to the movement trajectory of the nut groove, and is used to pre-install the pre-pierced screw and nut as a whole on the filter; the edge of the turntable 120 is provided with two outwardly protruding nut placement parts 121, and the two nut grooves are respectively arranged on the two nut placement parts 121.

[0053] like Figure 9-13 As shown, the screw and nut integral pre-assembly mechanism 500 includes a third lifting module 510 and a fourth lifting module 520, the third lifting module 510 is provided with a pre-assembly electric sleeve, the fourth lifting module 520 is provided with a pre-assembly electric screw rod (including a third drive motor 521 installed on the fourth lifting module 520 and a pre-assembly electric screw rod 522 installed on the third drive motor 521), and the pre-assembly electric screw rod is inserted in the pre-assembly electric sleeve and arranged coaxially.

[0054] The fourth lifting module 520 can be installed on the third lifting module 510, or they can be two independent systems that work independently.

[0055] like Figure 10-13As shown, the pre-installed electric sleeve includes a sleeve 530 and a fourth drive motor 531 drivingly connected to the sleeve 530 (belt and pulley assembly 532); the pre-installed electric sleeve also includes an adsorption mechanism, which includes a shaft sleeve 541 sleeved in the middle of the sleeve 530, and a suction air path 540 is provided on the shaft sleeve 541; the inner diameters of the upper and lower ends of the sleeve 530 match the outer diameters of the upper and lower ends of the pre-installed electric batch rod, and the inner diameter of the middle part of the sleeve 530 is larger than the inner diameters of the upper and lower ends, forming an annular chamber with the pre-installed electric batch rod; a plurality of first air vents 535 are circumferentially provided in the middle part of the sleeve 530, connecting the suction air path 540 and the chamber; a plurality of axially arranged second air vents 536 are provided in the lower part of the sleeve 530, which are used to connect the chamber and the lower end surface of the sleeve 530. As shown Fig.11 The sleeve 530 is divided into two parts, the upper part is the hollow shaft 533, and the lower part is the sleeve 530. The first vent hole 535 is set on the hollow shaft 533. The hollow shaft 533 is connected to the third lifting module 510 through the first bearing 534, and the sleeve 541 is connected to the hollow shaft 533 through the second bearing 542.

[0056] like Figure 3 , 4 As shown, the rotary positioning mechanism 100 also includes a work station plate 110, which is located above the turntable 120. The gap between the work station plate 110 and the turntable 120 is smaller than the thickness of the nut, so as to prevent the nut from being thrown out; a first drive motor 130 is provided on the work station plate 110, which passes through the work station plate 110 and is transmission-connected to the turntable 120; an upper nut station 111, a pre-screw station 112 and an overall pre-installation station 113 are respectively provided on the work station plate 110 corresponding to the upper nut mechanism 300, the pre-screw mechanism 400 and the screw-nut overall pre-installation mechanism 500.

[0057] like Figure 3 , 4 As shown, the nut-adding station 111 , the screw-pre-piercing station 112 and the overall pre-assembly station 113 on the station plate 110 are respectively an open slot, a through hole and a through hole, and the two through holes are connected by a track slot 114 .

[0058] like Figure 3 , 4 As shown, a screw detection sensor 140 (a photoelectric sensor) is also provided at the overall pre-installation station 113 on the station plate 110, which is used to detect whether there is a screw when the pre-pierced screw nut is rotated as a whole to the station.

[0059] Embodiment 3

[0060] On the basis of the first and / or second embodiments, the device further comprises a nut orientation mechanism 200 for providing nuts with uniform directions to the upper nut mechanism 300 .

[0061] like Fig.14 As shown, the nut orientation mechanism 200 includes a slideway 202, an orientation block 203 is provided at the exit of the slideway 202, a nut orientation slot 208 is provided on the orientation block 203, the opening direction of the nut orientation slot 208 faces the exit of the slideway 202, the bottom shape of the nut orientation slot 208 matches the shape of the nut, wherein the depth of the nut orientation slot 208 matches the circumscribed circle of the nut, and the bottom of the nut orientation slot 208 is a V-shape that matches the shape of the nut. The nut orientation mechanism 200 also includes a nut translation manipulator 205 (including a translation cylinder installed on a bracket 201 and a lifting cylinder installed on the translation cylinder, and a latch 204 is provided on the lifting cylinder), and the nut translation manipulator 205 is provided with a latch 204 for inserting into the nut at the exit of the slideway 202. The orientation block 203 is connected to the movable end of an orientation block translation drive module 206, and reciprocates left and right at the exit of the slideway 202. A cover plate 209 is provided above the exit of the slideway 202, and a limiting hole 210 matching the diameter and movement trajectory of the latch 204 is provided on the cover plate 209. A nut detection sensor 207 (photoelectric sensor) is also provided at the entrance end of the slideway 202 to detect whether the nuts in the slideway 202 are full.

[0062] Operation and effect of the nut orientation mechanism 200:

[0063] (1) A nut orientation groove is designed to match the shape of the nut, so that the nuts flowing into the groove can be oriented and adjusted to a uniform direction.

[0064] (2) Design a nut translation manipulator, insert a pin into the nut, and push the nut toward the nut orientation groove to help the nut flow into the nut orientation groove for orientation.

[0065] (3) The orientation block is designed to be movable to avoid affecting the prepared nut when grabbing the nut in the nut orientation slot.

[0066] (4) The cover plate can be designed to prevent the nut from being taken out by the nut translation robot.

[0067] Working process:

[0068] (1) The nuts blown by the vibration plate flow through the slideway 202 into the directional block 203, and the nuts are adjusted and rotated to the required direction through the nut directional groove 208; the latch 204 descends and inserts the second nut, the directional block 203 translates, and the upper nut mechanism 300 absorbs the nut on the directional block 203 (the translation of the directional block 203 can prevent the second nut from affecting the absorption of the first nut), and then the nut is placed in the nut groove to complete the loading.

[0069] (2) The turntable 120 has three workstations and two workbenches. While placing the nut, the pre-threading screw mechanism 400 threads the screw into the nut. After the turntable 120 rotates 90 degrees (at this time, the upper nut mechanism 300 and the pre-threading screw mechanism 400 are both ready), the screw and nut overall pre-installation mechanism 500 sucks up the pre-threaded bolt and screw as a whole, and after the turntable 120 rotates another 90 degrees, it descends and threads into the filter cover directly below. The turntable 120 rotates another 90 degrees to start the next cycle and repeat the action.

[0070] (3) The screw is blown to the screw feeding pipe 424 through the screw separation mechanism and enters the discharge hole 423 to wait for material; after the turntable 120 is rotated to its position, the second lifting module 420 descends, and the cutting block 422 extends to send the pre-stored screw to the top of the nut under the screw discharge pipe 425, and the screw clamp 430 clamps the screw; the first lifting module 410 descends to a certain height, the clamping cylinder opens, and the pre-piercing electric batch rod begins to pre-pierce; after the pre-piercing is completed, the pre-piercing electric batch rod rises, the cutting block 422 retracts, and the next screw is blown to be stored, and at the same time the turntable 120 rotates 90 degrees.

[0071] (4) When the pre-threaded screw and nut on the turntable 120 rotates to the screw and nut integral pre-installation mechanism 500, the third lifting module 510 drives the sleeve 530 to descend to absorb the pre-threaded screw and nut, the third lifting module 510 rises, the turntable 120 rotates, and after passing the safety position, the sleeve 530 descends to the working height of the filter cover surface; at this time, the fourth lifting module 520 descends, and the pre-installed electric screw rod begins to thread the screw on the filter cover, judging whether the screw is in place by torque and depth; after it is in place, the sleeve 530 locks the nut on the screw on the cover. After completion, the screw and nut integral pre-installation mechanism 500 returns to zero position.

[0072] The above description is only an application embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the protection scope of the present invention.

Claims

1. A filter screw nut high-speed pre-threading device, characterized in that: include: A rotation positioning mechanism (100), the rotation positioning mechanism (100) comprising a rotatable turntable (120), two nut grooves matching the nuts being provided on the same circumference of the turntable (120), the two nut grooves being symmetrically arranged; as well as An upper nut mechanism (300) and a pre-threading screw mechanism (400), wherein the upper nut mechanism (300) and the pre-threading screw mechanism (400) are respectively opposite to the two nut grooves; wherein the upper nut mechanism (300) is used to put a nut into the nut groove, and the pre-threading screw mechanism (400) is used to pre-thread a screw onto the nut; The pre-piercing screw mechanism (400) comprises a first lifting module (410) and a second lifting module (420); the second lifting module (420) is provided with a cutting block translation driving module (421), a screw feeding pipe (424) and a screw discharge pipe (425); a cutting block (422) is provided at the movable end of the cutting block translation driving module (421); and a discharge hole (423) is provided on the cutting block (422); the screw feeding pipe (424) and the screw discharge pipe (425) are respectively located at the cutting block (422) and the discharge hole (423) is provided on the cutting block (422). ) on the upper and lower sides, when the cutting block (422) reciprocates and translates, the discharge hole (423) is alternately connected with the screw feeding tube (424) and the screw discharge tube (425) respectively; a pre-pierced electric batching rod is installed on the first lifting module (410), and the pre-pierced electric batching rod is directly opposite to the screw discharge tube (425); the second lifting module (420) is also provided with a screw clamp (430), and the screw clamp (430) is located at the lower end of the screw discharge tube (425) and is used to clamp the screw falling from the screw discharge tube (425); The device further comprises a screw and nut integral pre-installation mechanism (500), the screw and nut integral pre-installation mechanism (500) being directly opposite to the movement track of the nut groove and being used to integrally pre-install the pre-pierced screw and nut on the filter; the edge of the rotating disk (120) is provided with two outwardly protruding nut placement portions (121), and the two nut grooves are respectively arranged on the two nut placement portions (121); The screw and nut integral pre-assembly mechanism (500) comprises a third lifting module (510) and a fourth lifting module (520), the third lifting module (510) being provided with a pre-assembly electric sleeve, the fourth lifting module (520) being provided with a pre-assembly electric screw rod, the pre-assembly electric screw rod being inserted into the pre-assembly electric sleeve and arranged coaxially; The pre-installed electric sleeve comprises a sleeve (530) and a fourth drive motor (531) drivingly connected to the sleeve (530); the pre-installed electric sleeve further comprises an adsorption mechanism, the adsorption mechanism comprising a shaft sleeve (541) sleeved in the middle of the sleeve (530), the shaft sleeve (541) being provided with a suction air path (540); the inner diameters of the upper and lower ends of the sleeve (530) match the outer diameters of the upper and lower ends of the pre-installed electric batching rod, the inner diameter of the middle of the sleeve (530) is larger than the inner diameters of the upper and lower ends, and forms an annular chamber with the pre-installed electric batching rod; a plurality of first vent holes (535) are circumferentially provided in the middle of the sleeve (530), connecting the suction air path (540) and the chamber; a plurality of axially arranged second vent holes (536) are provided in the lower part of the sleeve (530), connecting the chamber and the lower end surface of the sleeve (530); The rotary positioning mechanism (100) further comprises a work station plate (110), wherein the work station plate (110) is located above the rotating disk (120); a first driving motor (130) is provided on the work station plate (110) and passes through the work station plate (110) to be transmission-connected to the rotating disk (120); and a nut upper station (111), a screw pre-piercing station (112) and an overall pre-assembly station (113) are respectively provided on the work station plate (110) at locations corresponding to the nut upper mechanism (300), the screw pre-piercing mechanism (400) and the screw and nut overall pre-assembly mechanism (500).

2. The filter screw and nut high-speed pre-threading equipment according to claim 1, characterized in that: The fourth lifting module (520) is installed on the third lifting module (510).

3. The filter screw and nut high-speed pre-threading equipment according to claim 1, characterized in that: The screw and nut integral pre-assembly mechanism (500) faces the intersection of the nut groove movement trajectory and the line connecting the two nut grooves.

4. The filter screw and nut high-speed pre-threading equipment according to claim 1, characterized in that: The upper nut station (111), the pre-threaded screw station (112) and the overall pre-installation station (113) on the station plate (110) are respectively an open slot, a through hole and a through hole, and the two through holes are connected by a track slot (114); a screw detection sensor (140) is also provided at the overall pre-installation station (113) on the station plate (110), and is used to detect whether a screw is present when the pre-threaded screw and nut are rotated as a whole to the station.

5. The filter screw and nut high-speed pre-threading equipment according to claim 1, characterized in that: The device further comprises a nut orientation mechanism (200) for providing nuts with uniform directions to the upper nut mechanism (300); the nut orientation mechanism (200) comprises a slideway (202), an orientation block (203) is provided at the exit of the slideway (202), a nut orientation slot (208) is provided on the orientation block (203), the opening direction of the nut orientation slot (208) faces the exit of the slideway (202), and the shape of the bottom of the nut orientation slot (208) matches the shape of the nut; the nut orientation mechanism (200) further comprises a nut translation manipulator (2 05), a latch (204) is provided on the nut translation manipulator (205) for inserting into the nut at the exit of the slideway (202); the directional block (203) is connected to the movable end of a directional block translation drive module (206) and reciprocates left and right at the exit of the slideway (202); a cover plate (209) is provided above the exit of the slideway (202), and a limit hole (210) matching the diameter and movement trajectory of the latch (204) is provided on the cover plate (209); a nut detection sensor (207) is also provided at the entrance end of the slideway (202).

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