Embedded lead screw module

Abstract

The utility model belongs to the technical field of lead screw modules, and discloses an embedded lead screw module. Comprising a U-shaped mounting base, a lead screw rotationally mounted between base bodies on the two sides of the U-shaped mounting base, two side plates fixed between the base bodies on the two sides of the U-shaped mounting base, and a sliding base arranged on the lead screw in a sleeving mode and in threaded connection with the lead screw. The mounting plate is fixed to the top of the sliding base and used for mounting a to-be-machined part, the driving motor is fixed to the U-shaped mounting base and used for driving the lead screw to rotate, the two sides of the sliding base abut against the sides, close to each other, of the two side plates correspondingly, and a cleaning mechanism used for cleaning the lead screw is arranged on the sliding base and comprises a cleaning assembly. The cleaning assembly comprises a worm wheel rotationally installed on the sliding base and an annular cleaning brush arranged on the side, away from the sliding base, of the worm wheel and arranged around the lead screw, and bristles abutting against the lead screw are arranged on the inner side of the annular cleaning brush. According to the lead screw cleaning device, the lead screw can be cleaned in the movement process of the lead screw module, so that normal operation of the lead screw module is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lead screw module technical field, especially in embedded lead screw module. BACKGROUND

[0002] ‌Embedded lead screw module is a kind of linear module with track embedded design, embedded lead screw module integrates ball screw and U-shaped body together, U-shaped body is inlaid with slide rail on both sides, thereby saving the guide element required by traditional module, guide element is the guide rod matched with slider in linear module‌.Embedded lead screw module is suitable for application scenarios of various automation industries, such as numerical control machine tool, cutting device and the like.

[0003] In the Chinese utility model patent with the announcement number CN208946294U, a kind of LCM liquid crystal module cutting device is disclosed, the position of its spray head can be adjusted, can be adjusted with the position of cutting head, can effectively cool cutting head, reduce use limitation;At the same time, a large amount of smoke can be absorbed during cutting, prevent from affecting environment, improve use reliability;And cutting can be carried out by self-moving grille plate, reduce security risk, guarantee cutting route, improve cutting accuracy, improve practicality;Including upper box body, lower box body, electric cylinder, cutting head, grille plate, four groups of supporting rods, cooling water tank and spray head;Including fixed plate, two groups of first threaded pipes, two groups of first threaded rods, upper placement plate, rotating shaft, connecting plate and lower placement plate;Still include smoke hood, steel wire hose and dust collector pass;Still include adjusting plate, left slide bar, right slide bar, moving block, left placement plate, driving motor, adjusting motor, lead screw and four groups of fixed pulleys, base and four groups of bottom foot plates.In work, first, use four groups of bottom foot plates to support stably as a whole, then place the LCM liquid crystal module to be cut on grille plate, control grille plate and LCM liquid crystal module linear movement by electric cylinder, and cutting head completes cutting action to LCM liquid crystal module.

[0004] For the related technology in the above, the inventor believes that the following defects exist: in the process that cutting head cuts LCM liquid crystal module, water is sprayed by spray head to cool cutting head, and some splashing debris will be generated during cutting, when debris combines with water and falls on lead screw, mixed with water after long-term use, debris is easy to bond on lead screw, thereby affecting the normal sliding of moving block. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides an embedded lead screw module.

[0006] The above technical purpose of the utility model is realized through the following technical scheme: a built-in screw module, including U type mounting seat, rotatingly installed screw rod between the seat bodies on both sides of U type mounting seat, two side plates fixed between the seat bodies on both sides of U type mounting seat, sliding seat sleeved on screw rod and threadedly connected with screw rod, mounting plate fixed on the top of sliding seat and used for mounting parts to be processed, and driving motor fixed on U type mounting seat and used for driving screw rod to rotate, the two sides of sliding seat are respectively abutted with one side of two side plates close to each other, the sliding seat is provided with cleaning mechanism for cleaning screw rod, the cleaning mechanism includes cleaning assembly, the cleaning assembly includes worm wheel rotatingly installed on sliding seat and annular cleaning brush arranged on the side away from sliding seat of worm wheel and surrounding screw rod, the inner side of annular cleaning brush is provided with bristles abutting with screw rod.

[0007] When the built-in screw module is applied to numerical control machine tool, cutting device and other equipment, water is usually sprayed to cool the machining head, and some splashing debris is generated during cutting, and the debris mixed with water is easy to stick on the screw rod, and the driving motor drives the screw rod to rotate, since the sliding seat is threadedly connected with the screw rod, the two sides of the sliding seat are respectively abutted with one side of the two side plates close to each other, so that the sliding seat can move along the axial direction of the screw rod, the annular cleaning brush moves synchronously with the worm wheel and the sliding seat, so that the bristles of the annular cleaning brush clean the debris mixed with water on the screw rod, and the probability that the debris mixed with water is blocked on the screw rod and affects the normal movement of the sliding seat is reduced.

[0008] Further, the cleaning mechanism further includes a transmission assembly, the transmission assembly includes a rack fixed between the seat bodies on both sides of the U-shaped mounting seat and parallel to the screw rod, a worm wheel rotatingly installed on the bottom of the mounting plate and engaged with the worm wheel, and a transmission gear fixedly sleeved on the worm wheel and engaged with the rack.

[0009] By adopting the above technical scheme, when the driving motor works and the sliding seat moves along the axial direction of the screw rod, the mounting plate moves synchronously with the sliding seat, so that the worm on the mounting plate and the transmission gear on the worm all move synchronously with the sliding seat, since the transmission gear is engaged with the rack fixed between the seat bodies on both sides of the U-shaped mounting seat, the transmission gear rotates during forward movement, the transmission gear drives the worm fixed thereto and the worm wheel engaged with the worm to rotate, and further the annular cleaning brush rotates to clean the screw rod during forward movement, which is conducive to improving the cleaning effect of the screw rod.

[0010] Further, the annular cleaning brush comprises a first cleaning unit and a second cleaning unit, the first cleaning unit comprises a semicircle ring detachably connected with the side of the worm gear away from the sliding seat, a first magic tape fixedly attached to the inner wall of the semicircle ring, a second magic tape attached to the side of the first magic tape away from the semicircle ring, and cleaning bristles fixedly attached to the side of the second magic tape away from the semicircle ring, the second cleaning unit is mirror-imaged with the first cleaning unit about the lead screw, and the semicircle ring of the first cleaning unit is connected with the semicircle ring of the second cleaning unit through a connecting assembly.

[0011] By adopting the above technical scheme, when the cleaning bristles are worn out after long-term use, the staff can only tear off the second magic tape to remove the cleaning bristles, then replace the second magic tape with new cleaning bristles, and reattach the second magic tape to the first magic tape, so as to ensure the cleaning effect of the annular cleaning brush on the lead screw.

[0012] Further, the side wall of the worm gear away from the sliding seat is fixed with a connecting block, a clamping groove is formed through the side wall of the connecting block, the groove opening of the clamping groove is located on the side of the connecting block away from the worm gear, the depth of the clamping groove increases from the middle of the connecting block to both sides, the side wall of the semicircle ring close to the sliding seat is fixed with a resilient clamp, the resilient clamp is provided with two and mirror-imaged, and the sides of the two resilient clamps away from each other are respectively abutted against the inner walls of the two sides of the clamping groove.

[0013] By adopting the above technical scheme, when the cleaning bristles are worn out after long-term use, the staff can only tear off the second magic tape to remove the cleaning bristles, then replace the second magic tape with new cleaning bristles, and reattach the second magic tape to the first magic tape, so as to ensure the cleaning effect of the annular cleaning brush on the lead screw.

[0014] Further, the two resilient clamps are fixed with a spring.

[0015] By adopting the above technical scheme, under the elastic force of the spring, the sides of the two resilient clamps away from each other are abutted against the inner walls of the two sides of the clamping groove, so as to enhance the stability of the connection between the resilient clamp and the clamping groove, and ensure the stability of the annular cleaning brush during use.

[0016] Further, the inner wall of the clamping groove is fixed with a blocking plate, the blocking plate is provided with two, and the side walls of the two blocking plates close to each other are respectively attached to the two ends of the resilient clamp.

[0017] By adopting the technical scheme, the setting of the blocking plate reduces the probability of the debris or cooling water in the machining process entering the clamping groove, reduces the probability of affecting the disassembly work of the semicircular ring due to the debris being clamped between the two elastic clamps, and reduces the probability of oxidation, rust and other phenomena of the spring being exposed.

[0018] Further, one side of the two semicircular rings is hinged to each other, and the other side of the two semicircular rings is fixed with a connecting plate, the connecting assembly comprises a bolt penetratingly arranged on the connecting plate and in clearance fit with the connecting plate, and a nut sleeved on the bolt and in threaded connection with the bolt, and the nut is located on the side of the connecting plate away from the head of the bolt.

[0019] By adopting the technical scheme, when the damaged cleaning brush is disassembled, the staff can open the semicircular ring by unscrewing the nut and the bolt, so as to disassemble and replace the worn cleaning brush and the second magic tape as a whole, thereby ensuring the cleaning effect of the annular cleaning brush on the lead screw. By opening the semicircular ring, the cleaning brush can be replaced with a large operation space, thereby reducing the probability of being difficult to replace the cleaning brush due to the small distance between the semicircular ring and the lead screw.

[0020] Further, the cleaning mechanism is provided with two groups and is mirror-imaged distributed about the sliding seat, a through hole penetratingly arranged on the seat body on both sides of the U-shaped mounting seat is provided for the mounting plate, and a gap is provided on one side of the sliding seat for the rack.

[0021] By adopting the technical scheme, when the sliding seat moves axially along the lead screw, the mounting plate fixed to the top of the sliding seat moves synchronously with the sliding seat, the through hole plays a role of gap for the mounting plate, and the movement range of the sliding seat is expanded to a certain extent, which is beneficial to the cleaning structure on the sliding seat to clean the debris on the lead screw. The two sides of the sliding seat are respectively in abutment with one side of the two side plates close to each other, and the gap plays a role of gap for the rack, thereby facilitating the movement of the cleaning mechanism with the sliding seat.

[0022] Further, a plurality of legs are fixed to the bottom of the horizontal section of the U-shaped mounting seat, and a discharge hole is penetratingly arranged on the bottom of the horizontal section of the U-shaped mounting seat.

[0023] By adopting the technical scheme, the debris cleaned by the annular cleaning brush is easily dropped to the ground from the discharge hole, thereby reducing the probability of the debris accumulating on the horizontal section of the U-shaped mounting seat, so as to facilitate the cleaning of the staff.

[0024] Further, the transmission gear is a bevel gear, the rack is an inclined rack in meshing connection with the bevel gear, and the teeth of the rack are located at the bottom of the rack.

[0025] By adopting the technical scheme, the debris generated in the machining process or the cleaning process is not easy to fall onto the clamping teeth of the rack, and normal operation of the cleaning mechanism is facilitated.

[0026] In summary, the utility model has the following beneficial effects:

[0027] In the application, when the embedded screw module is applied to numerical control machine tools, cutting devices and other equipment, water spraying is usually required to cool the machining head. During the operation of the driving motor, the sliding seat can move in the axial direction of the lead screw, and the annular cleaning brush moves synchronously with the worm gear and the sliding seat. In this way, the bristles of the annular cleaning brush clean the debris mixed with water on the lead screw, reducing the probability that the debris mixed with water will clog the sliding seat and affect the normal movement of the sliding seat. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the overall structure schematic diagram of the utility model embodiment 1;

[0029] Figure 2 is Figure 1 the structure schematic diagram of another view after deleting the side plate;

[0030] Figure 3 is Figure 2 the enlarged schematic diagram of A in the figure;

[0031] Figure 4 is the structure schematic diagram of the utility model embodiment 1 for highlighting the connecting assembly;

[0032] Figure 5 is Figure 4 the enlarged schematic diagram of B in the figure;

[0033] Figure 6 is the plane schematic diagram of the utility model embodiment 2 for highlighting the transmission gear.

[0034] In the figure: 1, U-shaped mounting seat;11, side plate;12, lead screw;13, supporting leg;14, material discharging through hole;15, straight through hole;16, driving motor;2, cleaning mechanism;21, cleaning assembly;211, worm gear;212, annular cleaning brush;2121, first cleaning unit;21211, semicircle ring;21212, first magic tape;21213, second magic tape;21214, cleaning brush hair;2122, second cleaning unit;22, transmission assembly;221, rack;222, worm;223, transmission gear;3, sliding seat;31, mounting plate;32, accommodation gap;4, connecting block;41, clamping groove;411, plugging plate;5, elastic clamp;51, spring;6, connecting assembly;61, bolt;62, nut;7, connecting plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] Embodiment 1

[0037] As shown in the drawings, Figures 1-5 The present application discloses an embedded screw module, which comprises a U-shaped mounting seat 1 and a cleaning mechanism 2. The outer shape of the U-shaped mounting seat 1 is U-shaped, and a vertical side plate 11 is fixed between the seat bodies on both sides of the U-shaped mounting seat 1. The side plate 11 is provided with two and is located on both sides of the U-shaped mounting seat 1 respectively. A lead screw 12 is rotatably installed between the seat bodies on both sides of the U-shaped mounting seat 1, the axial direction of the lead screw 12 is parallel to the length direction of the side plate 11, and the lead screw 12 is arranged between the two side plates 11. Four supporting legs 13 are fixed to the bottom of the horizontal section of the U-shaped mounting seat 1, and the four supporting legs 13 are arranged in a rectangular array at the four corners of the bottom of the U-shaped mounting seat 1. A discharging through hole 14 is provided through the bottom of the horizontal section of the U-shaped mounting seat 1. In order to facilitate the centralized cleaning of the sundries falling from the discharging through hole 14, a collecting frame (not shown in the figure) can be arranged at the bottom of the U-shaped mounting seat 1.

[0038] A sliding seat 3 is sleeved on the lead screw 12 and threadedly connected with the lead screw 12, and the sliding seat 3 is abutted on one side of the two side plates 11 which are close to each other. A mounting plate 31 for mounting a part to be processed is fixed to the top of the sliding seat 3. A slot-shaped through hole 15 is provided through the seat bodies on both sides of the U-shaped mounting seat 1 for the mounting plate 31 to pass through, so that the mounting plate 31 can pass through the slot-shaped through hole 15 during movement with the sliding seat 3, thereby playing a certain role of giving way. A driving motor 16 is fixed to the U-shaped mounting seat 1, the axis of the output shaft of the driving motor 16 coincides with the axis of the lead screw 12, and the output shaft of the driving motor 16 is fixed to one end of the lead screw 12 for driving the lead screw 12 to rotate.

[0039] The cleaning mechanism 2 is arranged on the sliding seat 3 and is used for cleaning the lead screw 12. The cleaning mechanism 2 comprises a cleaning assembly 21 and a transmission assembly 22, and the cleaning assembly 21 comprises a worm wheel 211 and an annular cleaning brush 212. The worm wheel 211 is rotatably installed on the sliding seat 3, the axis of the worm wheel 211 coincides with the axis of the lead screw 12, and the lead screw 12 penetrates through the worm wheel 211 and is in clearance fit. The annular cleaning brush 212 is arranged on the side of the worm wheel 211 away from the sliding seat 3, the cross section of the annular cleaning brush 212 is annular, the inner diameter of the annular cleaning brush 212 is greater than the outer diameter of the lead screw 12, the axis of the annular cleaning brush 212 coincides with the axis of the lead screw 12, and the inner side of the annular cleaning brush 212 is provided with brush hairs abutting against the lead screw 12.

[0040] When the built-in screw module is applied to numerical control machine tools, cutting devices and other equipment, the machining head used for machining parts and the corresponding driving components of the machining head (neither the driving components nor the machining head is shown in the figure) are installed on the top of the mounting plate 31, and water is usually sprayed to cool the machining head, and some splashed debris is generated during cutting. The debris mixed with water is easy to stick to the lead screw 12. When the driving motor 16 is started and the sliding seat 3 moves axially along the lead screw 12, the annular cleaning brush 212 moves synchronously with the worm wheel 211 and the sliding seat 3, so that the bristles of the annular cleaning brush 212 clean the debris mixed with water on the lead screw 12, reducing the probability that the debris mixed with water is blocked on the lead screw 12 and affects the normal movement of the sliding seat 3.

[0041] The transmission assembly 22 includes a rack 221, a worm 222 and a transmission gear 223. The rack 221 is fixed between the seat bodies on both sides of the U-shaped mounting seat 1 and parallel to the lead screw 12. The sliding seat 3 is provided with a gap 32 for the rack 221 to move. The worm 222 is vertically arranged, and the upper end of the worm 222 is rotatably installed at the bottom of the mounting plate 31. The axis of the transmission gear 223 coincides with the axis of the worm 222. The transmission gear 223 is sleeved on the worm 222 and fixed with the worm 222. The transmission gear 223 is engaged with the rack 221, and the orthographic projection of the transmission gear 223 is located in the orthographic projection area of the mounting plate 31.

[0042] When the driving motor 16 works and the sliding seat 3 moves axially along the lead screw 12, the mounting plate 31, the worm 222 and the transmission gear 223 move synchronously with the sliding seat 3. Since the transmission gear 223 is engaged with the rack 221 fixed between the seat bodies on both sides of the U-shaped mounting seat 1, the transmission gear 223 rotates during forward movement. The transmission gear 223 drives the worm 222 fixed therewith and the worm wheel 211 engaged with the worm 222 to rotate, thereby rotating and cleaning the lead screw 12 during forward movement of the annular cleaning brush 212, which is conducive to improving the cleaning effect of the lead screw 12.

[0043] The side wall of the worm wheel 211 away from the sliding seat 3 is fixed with a connecting block 4, the side wall of the connecting block 4 is provided with a clamping groove 41 penetrating through, the slot opening of the clamping groove 41 is located on the side of the connecting block 4 away from the worm wheel 211, and the depth of the clamping groove 41 increases from the middle of the connecting block 4 to both sides. In order to facilitate replacement of the annular cleaning brush 212 which is seriously worn, the annular cleaning brush 212 comprises a first cleaning unit 2121 and a second cleaning unit 2122, the first cleaning unit 2121 comprises a semicircular ring 21211, a first magic tape 21212, a second magic tape 21213 and cleaning brush hairs 21214. The cross section of the semicircular ring 21211 is in the shape of a semicircular ring 21211, and the semicircular ring 21211 is detachably connected to the side of the worm wheel 211 away from the sliding seat 3. Specifically, the side wall of the semicircular ring 21211 near the sliding seat 3 is fixed with an elastic clamp 5. The elastic clamp 5 is provided with two and is mirror-imaged, and the sides of the two elastic clamps 5 away from each other are respectively abutted against the inner walls of the two sides of the clamping groove 41. The two elastic clamps 5 are fixed with a spring 51, and the spring 51 abuts the inner walls of the two sides of the clamping groove 41 on the sides of the two elastic clamps 5 away from each other under the action of the elastic force, so as to enhance the stability of the connection between the elastic clamp 5 and the clamping groove 41. The inner wall of the clamping groove 41 is fixed with a blocking plate 411, and the blocking plate 411 is provided with two, and the side walls of the two blocking plates 411 close to each other are respectively attached to the two ends of the elastic clamp 5. The blocking plate 411 reduces the probability of debris and cooling water entering the clamping groove 41 in the machining process, reduces the probability of affecting the disassembly work of the semicircular ring 21211 due to the debris being stuck between the two elastic clamps 5, and reduces the probability of oxidation, rust and other phenomena of the spring 51 exposed.

[0044] The first magic tape 21212 is attached to and fixed with the inner wall of the semicircular ring 21211, the second magic tape 21213 is bonded to the side of the first magic tape 21212 away from the semicircular ring 21211, and the cleaning brush hairs 21214 are fixed to the side of the second magic tape 21213 away from the semicircular ring 21211. The second cleaning unit 2122 is mirror-imaged with the first cleaning unit 2121 about the lead screw 12, and the semicircular ring 21211 of the first cleaning unit 2121 is connected to the semicircular ring 21211 of the second cleaning unit 2122 through the connecting assembly 6.

[0045] One side of each of the two semicircular rings 21211 is hinged to the other side, and a connecting plate is fixed to the other side of each semicircular ring 21211. The connecting assembly 6 includes a bolt 61 and a nut 62. The bolt 61 passes through the connecting plate and is clearance-fitted with the connecting plate. The nut 62 is sleeved on the bolt 61 and threadedly connected to the bolt 61. The nut 62 is located on the side of the connecting plate away from the head of the bolt 61. After prolonged use, the operator simply pulls the semicircular ring 21211 away from the sliding seat 3, causing the two elastic clips 5 to come closer together and move out of the slot 41. After removing the semicircular ring 21211, the operator can unscrew the nut 62 and bolt 61 and open the semicircular ring 21211. The cleaning bristles 21214 can then be replaced by removing the second Velcro 21213. After replacement, the operator simply presses the two elastic clips 5 towards the center, ensuring that the distance between the outer sides of the two elastic clips 5 is less than the size of the middle of the slot 41. Then, the operator simply pushes the semicircular ring 21211 from the opening of the slot 41 toward the sliding seat 3 to complete the installation, thus ensuring the cleaning effect of the ring cleaning brush 212 on the lead screw 12.

[0046] To ensure that the rod sections of the lead screw 12 located on both sides of the sliding seat 3 are cleaned, the cleaning mechanism 2 is provided with two sets that are mirror-distributed about the sliding seat 3.

[0047] Example 2

[0048] like Figure 6 As shown, the difference between this embodiment and Embodiment 1 is only that: the transmission gear 223 is a bevel gear, and the rack 221 is an inclined rack 221 that meshes with the bevel gear, with the locking teeth of the rack 221 located at the bottom of the rack 221. During the machining process of the part, the machining debris and cooling water generated may fall onto the rack 221. The limitation on the shape of the rack 221 and the gear can reduce the probability of debris and other debris falling onto the locking teeth of the rack 221, which is beneficial to ensuring the normal operation of the cleaning mechanism 2.

[0049] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An embedded lead screw module, comprising a U-shaped mounting base (1), a lead screw (12) rotatably mounted between two seats on both sides of the U-shaped mounting base (1), two side plates (11) fixed between two seats on both sides of the U-shaped mounting base (1), a sliding seat (3) sleeved on the lead screw (12) and threadedly connected to the lead screw (12), a mounting plate (31) fixed to the top of the sliding seat (3) and used for mounting the part to be processed, and a drive motor (16) fixed to the U-shaped mounting base (1) and used for driving the lead screw (12) to rotate, wherein the two sides of the sliding seat (3) respectively abut against the side of the two side plates (11) that are close to each other, characterized in that: The sliding seat (3) is provided with a cleaning mechanism (2) for cleaning the lead screw (12). The cleaning mechanism (2) includes a cleaning component (21). The cleaning component (21) includes a worm gear (211) rotatably mounted on the sliding seat (3) and an annular cleaning brush (212) disposed on the side of the worm gear (211) away from the sliding seat (3) and surrounding the lead screw (12). The inner side of the annular cleaning brush (212) is provided with bristles that abut against the lead screw (12).

2. The embedded lead screw module according to claim 1, characterized in that: The cleaning mechanism (2) further includes a transmission assembly (22), which includes a rack (221) fixed between the seats on both sides of the U-shaped mounting base (1) and parallel to the lead screw (12), a worm (222) rotatably mounted on the bottom of the mounting plate (31) and meshing with the worm wheel (211), and a transmission gear (223) fixedly sleeved on the worm (222) and meshing with the rack (221).

3. The embedded lead screw module according to claim 1, characterized in that: The annular cleaning brush (212) includes a first cleaning unit (2121) and a second cleaning unit (2122). The first cleaning unit (2121) includes a semi-circular ring (21211) detachably connected to the side of the worm gear (211) away from the sliding seat (3), a first Velcro fastener (21212) attached and fixed to the inner wall of the semi-circular ring (21211), a second Velcro fastener (21213) bonded to the side of the first Velcro fastener (21212) away from the semi-circular ring (21211), and cleaning bristles (21214) fixed to the side of the second Velcro fastener (21213) away from the semi-circular ring (21211). The second cleaning unit (2122) and the first cleaning unit (2121) are mirror images of each other about the lead screw (12). The semi-circular ring (21211) of the first cleaning unit (2121) and the semi-circular ring (21211) of the second cleaning unit (2122) are connected by a connecting component (6).

4. An embedded lead screw module according to claim 3, characterized in that: A connecting block (4) is fixed on the side wall of the worm gear (211) away from the sliding seat (3). A snap-fit ​​groove (41) is provided through the side wall of the connecting block (4). The opening of the snap-fit ​​groove (41) is located on the side of the connecting block (4) away from the worm gear (211). The depth of the snap-fit ​​groove (41) increases from the middle of the connecting block (4) to both sides. An elastic clip (5) is fixed on the side wall of the semi-circular ring (21211) close to the sliding seat (3). There are two elastic clips (5) arranged in a mirror image. The sides of the two elastic clips (5) that are far apart from each other are respectively pressed against the inner walls of the two sides of the snap-fit ​​groove (41).

5. An embedded lead screw module according to claim 4, characterized in that: A spring (51) is fixed between the two elastic clips (5).

6. An embedded lead screw module according to claim 4, characterized in that: A sealing plate (411) is fixed on the inner wall of the snap-fit ​​groove (41). There are two sealing plates (411), and the side walls of the two sealing plates (411) that are close to each other are respectively attached to the two ends of the elastic clip (5).

7. An embedded lead screw module according to claim 3, characterized in that: One side of each of the two semicircular rings (21211) is hinged to the other side, and a connecting plate (7) is fixed to the other side of each of the two semicircular rings (21211). The connecting assembly (6) includes a bolt (61) that passes through the connecting plate (7) and is clearance-fitted with the connecting plate (7), and a nut (62) that is sleeved on the bolt (61) and threadedly connected to the bolt (61). The nut (62) is located on the side of the connecting plate (7) away from the head of the bolt (61).

8. An embedded lead screw module according to claim 1, characterized in that: The cleaning mechanism (2) is provided with two sets of mirror distribution about the sliding seat (3). The U-shaped mounting seat (1) has through holes (15) on both sides of the seat body for the mounting plate (31) to pass through. The sliding seat (3) has a clearance notch (32) on one side for the rack (221) to move.

9. An embedded lead screw module according to claim 1, characterized in that: The bottom of the horizontal section of the U-shaped mounting base (1) is fixed with multiple support legs (13), and a discharge through hole (14) is provided through the bottom of the horizontal section of the U-shaped mounting base (1).

10. An embedded lead screw module according to claim 2, characterized in that: The transmission gear (223) is a bevel gear, and the rack (221) is an inclined rack (221) that meshes with the bevel gear, and the locking teeth of the rack (221) are located at the bottom of the rack (221).

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