CN215219437U - Printer selenium drum mounting bracket with clean mechanism - Google Patents

Abstract

The utility model discloses a printer selenium drum mounting bracket with clean mechanism, which comprises a bracket, the outer wall swing joint of support has the powder box, the support is for the electrically conductive roller of the outer wall fixedly connected with of powder box, the outer wall fixedly connected with scraper of support, the support has the collection box for the outer wall swing joint of scraper, the inner wall rotation of support is connected with first round bar, the outer wall fixedly connected with developer roll of first round bar, the outer wall of electrically conductive roller and the outer wall sliding connection frame of developer roll, the outer wall of scraper and the outer wall sliding connection of developer roll, two slide rails of the even fixedly connected with of outer wall of support, the outer wall swing joint of slide rail has the balladeur train. Through setting up structures such as slide rail, solved some powder and attached to on the developer roll, the powder gathering that will make the developer roll surface for a long time is more to reduce the problem of the life-span of developer roll.

Description

Printer selenium drum mounting bracket with clean mechanism

Technical Field

The utility model belongs to the technical field of the selenium drum, concretely relates to printer selenium drum mounting bracket with clean mechanism.

Background

A toner cartridge, also called a photosensitive drum, is generally composed of a base substrate made of aluminum, and a photosensitive material coated on the substrate, and in a laser printer, more than 70% of image forming members are concentrated in the toner cartridge, and the quality of printing is actually determined to a large extent by the toner cartridge. The cartridge determines not only the quality of the print, but also the amount of money the user spends during use.

However, the conventional apparatus has the following problems in use:

1. since the powder is printed on the paper by the developing roller, the developing roller is very important, although the powder on the developing roller is hung down by the scraper, a part of the powder is still attached to the developing roller, and the powder on the surface of the developing roller is gathered more after a long time, so that the service life of the developing roller is reduced.

2. Some paper may curl before entering the printer, so that when the paper passes through the toner cartridge, the printed writing is unclear due to the curl of the paper.

3. Because the waste powder collecting box on the toner cartridge is generally fixed together with the scraper, the screw on the scraper is taken down by using the screwdriver to take the waste powder collecting box every time the waste powder collecting box is checked, so that the operation is more complicated.

Disclosure of Invention

Not enough to prior art exists, the utility model aims at providing a printer selenium drum mounting bracket with clean mechanism possesses the advantage of powder on the convenient clean developer roll.

In order to achieve the above object, the utility model provides a following technical scheme: a printer selenium drum mounting rack with a cleaning mechanism comprises a support, wherein the outer wall of the support is movably connected with a powder box, the support is fixedly connected with a conductive roller relative to the outer wall of the powder box, the outer wall of the support is fixedly connected with a scraper, the support is movably connected with a collecting box relative to the outer wall of the scraper, the inner wall of the support is rotatably connected with a first round bar, the outer wall of the first round bar is fixedly connected with a developing roller, the outer wall of the conductive roller is slidably connected with the outer wall of the developing roller, the outer wall of the scraper is slidably connected with the outer wall of the developing roller, the outer wall of the support is uniformly and fixedly connected with two slide rails, the outer wall of each slide rail is movably connected with a sliding frame, a second round bar is rotatably connected between the outer walls of the two sliding frames which are close to each other, the outer wall of the second round bar is movably connected with the outer wall of the developing roller, and a bolt is movably arranged on the inner wall of the sliding frame, the outer wall fixedly connected with of second round bar glues the stick, the outer wall swing joint of the outer wall of gluing the stick and developing roller.

Through above-mentioned technical scheme, through setting up structures such as slide rail, slide two balladeums on the second round bar along the slide rail during the use, when the balladeur train slides to suitable position, run through balladeur train and slide rail with the bolt, glue stick and developer roll contact this moment, as long as rotate the developer roll and just can make the powder be glued away by gluing the stick.

Preferably, be two even fixedly connected with fixed plates outside the support, swing joint has the pressure frame between the outer wall that the fixed plate is close to each other, two the outer wall joint of fixed plate has two card framves, the inner wall fixedly connected with stand of card frame, the outer wall of stand rotates with the outer wall of support to be connected.

Through above-mentioned technical scheme, through setting up fixed plate isotructure, at first will press the frame card between two fixed plates, then rotate the card frame, let the card frame card in the both sides of fixed plate, play and will press the effect of frame fixing on the support, and press the frame bottom to be circular-arcly, can flatten the paper.

Preferably, a clamping groove is formed in the outer wall of the collecting box, a second sliding rod is movably connected to the inner wall of the clamping groove, a positioning plate is movably connected to the outer wall of the second sliding rod, and a first magnetic block is fixedly connected to one end of the second sliding rod.

Through above-mentioned technical scheme, through setting up structures such as locating plate, will collect the one end card of box in the inside of support earlier, remove the second slide bar after that for the second slide bar passes the draw-in groove on collecting the box, rotates the second slide bar after that, and under the effect of first magnetic path, the second slide bar can't slide, thereby will collect the box card on the support.

Preferably, the outer wall fixedly connected with worm wheel of second round bar, the outer wall meshing of worm wheel has the worm, the one end fixedly connected with carousel of worm, the support is for the outer wall fixedly connected with mount of worm, the outer wall of mount has been seted up and has been put the thing groove, the inner wall of putting the thing groove and the outer wall swing joint of worm.

Through above-mentioned technical scheme, in putting the thing inslot with the worm card on the mount, and the worm can also rotate this moment, worm and worm wheel meshing simultaneously, rotatory carousel after that for the worm drives the worm wheel and rotates, thereby lets the stick of glue rotate, drives the developer roll after that and rotates, and the stick of glue can glue away the dust on the developer roll, and the personnel of being convenient for operate.

Preferably, the inner wall joint of mount has the fixture block, the outer wall fixedly connected with ring of worm, the outer wall swing joint of ring and the outer wall of mount.

Through the technical scheme, in order to avoid the separation of the worm and the fixing frame, the clamping block is clamped on the fixing frame, and the ring on the worm prevents the worm from moving downwards.

Preferably, the inner wall swing joint of two the card frame has the frame of inserting, the outer wall fixedly connected with first slide bar of frame of inserting, the outer wall sliding connection of first slide bar has the limiting plate.

Through above-mentioned technical scheme, remove first slide bar, let insert the frame and run through the card frame, avoid the card frame to rotate, and then avoid pressing frame and fixed plate separation.

Preferably, the outer wall cover of first slide bar has the spring, the both ends of spring respectively with the limiting plate be outer wall and the outer wall fixed connection of first slide bar.

Through above-mentioned technical scheme, the spring on the first slide bar can provide elasticity, lets insert the frame and insert the inside at the card frame always for it is more stable to insert the frame.

Preferably, the outer wall of the first magnetic block is movably connected with a second magnetic block, one ends, close to each other, of the first magnetic block and the second magnetic block are opposite magnetic poles, the outer wall of the second magnetic block is connected with a guide rail in a sliding mode, and the inner wall of the second magnetic block is movably connected with an inserting rod.

Through above-mentioned technical scheme, when first magnetic path and second magnetic path were close to each other one end each other for the unlike magnetic pole, extracted the inserted bar this moment, under the effect of magnetic force, the second magnetic path slides along the guide rail to inhale together with first magnetic path, avoid first magnetic path to rotate, probably lead to the second slide bar and collect the box separation, pass second magnetic path and guide rail with the inserted bar after that, can find suitable position with the inserted bar and place, make things convenient for personnel's fixed collection box.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by arranging the structures such as the slide rail, when the developing roller is used, the two carriages on the second round rod slide along the slide rail, when the carriages slide to a proper position, the bolt penetrates through the carriages and the slide rail, the rubber rod is contacted with the developing roller at the moment, powder can be adhered away by the rubber rod only by rotating the developing roller, the worm is clamped in the storage groove on the fixing frame, the worm can also rotate at the moment, the worm is meshed with the worm wheel, then the rotary disc is rotated, the worm drives the worm wheel to rotate, the rubber rod is driven to rotate, the rubber rod can adhere away dust on the developing roller, in order to avoid the separation of the worm and the fixing frame, the clamping block is clamped on the fixing frame, the worm is prevented from moving downwards by the circular ring on the worm, through the matched use of the components, the problem that part of the powder is adhered to the developing roller is solved, and more powder on the surface of the developing roller can be accumulated for a long time, thereby reducing the life of the developing roller.

2. Through setting up fixed plate isotructure, at first will press the frame card between two fixed plates, then rotate the card frame, let card frame card in the both sides of fixed plate, play and will press the frame to fix the effect on the support, and it is circular-arc to press the frame bottom, can flatten the paper, remove first slide bar after that, let insert the frame and run through the card frame, avoid the card frame to rotate, and then avoid pressing frame and fixed plate separation, and the spring on the first slide bar can provide elasticity, let insert the inside of frame at the card frame always, it is possible to curl a bit before having avoided some paper entering printer, lead to the paper when the process selenium drum, because the writing that the curling of paper made is unclear.

3. By arranging the positioning plate and other structures, one end of the collecting box is clamped in the support, then the second sliding rod is moved to enable the second sliding rod to penetrate through the clamping groove on the collecting box, then the second sliding rod is rotated, the second sliding rod cannot slide under the action of the first magnetic block, so that the collecting box is clamped on the support, when one ends of the first magnetic block and the second magnetic block which are close to each other are of unlike magnetic poles, the inserted bar is pulled out, the second magnetic block slides along the guide rail under the action of magnetic force, so that the second magnetic block is attracted with the first magnetic block, the first magnetic block is prevented from rotating, the second sliding rod is possibly separated from the collecting box, then the inserted bar penetrates through the second magnetic block and the guide rail, the inserted bar can be placed at a proper position, and through the matching use of the components, the problem that the waste powder collecting box on the selenium drum is generally fixed with the scraper is solved, and the waste powder collecting box is checked every time, all need use the screwdriver to take off the screw on the scraper and just can take the useless powder collection box for the comparatively loaded down with trivial details problem is got up in the operation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the developing roller of the present invention;

fig. 3 is a schematic diagram of the present invention in a partially disassembled state as shown in fig. 2;

FIG. 4 is a schematic structural view of a second round bar of the present invention;

fig. 5 is a schematic diagram of the present invention in a partially disassembled state as shown in fig. 3;

FIG. 6 is a schematic diagram of the right side structure of FIG. 1 according to the present invention;

fig. 7 is a schematic diagram of the present invention in a partially disassembled state as shown in fig. 4;

fig. 8 is a schematic structural diagram of the second slide bar of the present invention.

In the figure: 1. a support; 2. powder box; 3. a first round bar; 4. a developing roller; 5. a conductive roller; 6. a scraper; 7. a collection box; 8. a second round bar; 9. glue stick; 10. a carriage; 11. a slide rail; 12. a bolt; 13. a worm gear; 14. a worm; 15. a turntable; 16. a fixed mount; 17. a storage groove; 18. a circular ring; 19. a clamping block; 20. a fixing plate; 21. pressing a frame; 22. a clamping frame; 23. a column; 24. inserting a frame; 25. a first slide bar; 26. a limiting plate; 27. a spring; 28. a card slot; 29. positioning a plate; 30. a second slide bar; 31. a first magnetic block; 32. a second magnetic block; 33. a guide rail; 34. and (4) inserting the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-5, the present invention provides a technical solution: a printer selenium drum mounting rack with a cleaning mechanism comprises a support 1, wherein the outer wall of the support 1 is movably connected with a powder box 2, the support 1 is fixedly connected with a conductive roller 5 relative to the outer wall of the powder box 2, the outer wall of the support 1 is fixedly connected with a scraper 6, the support 1 is movably connected with a collecting box 7 relative to the outer wall of the scraper 6, the inner wall of the support 1 is rotatably connected with a first round bar 3, the outer wall of the first round bar 3 is fixedly connected with a developing roller 4, the outer wall of the conductive roller 5 is slidably connected with the outer wall of the developing roller 4, the outer wall of the scraper 6 is slidably connected with the outer wall of the developing roller 4, the outer wall of the support 1 is uniformly and fixedly connected with two slide rails 11, the outer wall of each slide rail 11 is movably connected with a sliding frame 10, a second round bar 8 is rotatably connected between the outer walls of the two sliding frames 10 which are close to each other, the outer wall of the second round bar 8 is movably connected with the outer wall of the developing roller 4, and a bolt 12 is movably arranged on the inner wall of each sliding frame 10, stick 9 is glued to the outer wall fixedly connected with of second round bar 8, the outer wall of gluing stick 9 and the outer wall swing joint of developer roll 4, the outer wall fixedly connected with worm wheel 13 of second round bar 8, the outer wall meshing of worm wheel 13 has worm 14, the one end fixedly connected with carousel 15 of worm 14, support 1 is for the outer wall fixedly connected with mount 16 of worm 14, the outer wall of mount 16 has been seted up and has been put thing groove 17, the inner wall of putting thing groove 17 and the outer wall swing joint of worm 14, the inner wall joint of mount 16 has fixture block 19, the outer wall fixedly connected with ring 18 of worm 14, the outer wall of ring 18 and the outer wall swing joint of mount 16.

In the embodiment, by arranging the structures such as the slide rail 11, when in use, the two carriages 10 on the second round bar 8 slide along the slide rail 11, when the carriages 10 slide to a proper position, the bolt 12 penetrates through the carriages 10 and the slide rail 11, at this time, the glue stick 9 contacts with the developing roller 4, the powder can be adhered by the glue stick 9 only by rotating the developing roller 4, the worm 14 is clamped in the storage slot 17 on the fixing frame 16, and the worm 14 can also rotate at this time, the worm 14 is engaged with the worm wheel 13, then the rotating disc 15 is rotated, so that the worm 14 drives the worm wheel 13 to rotate, the glue stick 9 rotates, the developing roller 4 is driven to rotate, the glue stick 9 can adhere dust on the developing roller 4, in order to avoid the separation of the worm 14 from the fixing frame 16, the clamping block 19 is clamped on the fixing frame 16, and the ring 18 on the worm 14 prevents the worm 14 from moving downwards, through the cooperation of the above-mentioned components, the problem that a part of powder is attached to the developing roller 4, and the powder on the surface of the developing roller 4 is more accumulated after a long time, so that the service life of the developing roller 4 is shortened is solved.

Example two:

referring to fig. 6-7, based on the first embodiment, the present invention provides a technical solution: two fixed plates 20 of the even fixedly connected with of outer wall of support 1, swing joint has pressure frame 21 between the outer wall that fixed plate 20 is close to each other, the outer wall joint of two fixed plates 20 has two card framves 22, the inner wall fixedly connected with stand 23 of card frame 22, the outer wall of stand 23 rotates with the outer wall of support 1 to be connected, the inner wall swing joint of two card frames 22 has plug-in rack 24, the first slide bar 25 of the outer wall fixedly connected with of plug-in rack 24, the outer wall sliding connection of first slide bar 25 has limiting plate 26, the outer wall cover of first slide bar 25 has spring 27, the both ends of spring 27 respectively with limiting plate 26 be outer wall and first slide bar 25's outer wall fixed connection.

In this embodiment, through setting up fixed plate 20 isotructure, at first will press frame 21 card between two fixed plates 20, then rotate card frame 22, let card frame 22 card in the both sides of fixed plate 20, play and press the effect that frame 21 was fixed on support 1, and press frame 21 bottom to be circular-arcly, can flatten the paper, remove first slide bar 25 afterwards, let insert frame 24 run through card frame 22, avoid card frame 22 to rotate, and then avoid pressing frame 21 and fixed plate 20 to separate, and spring 27 on the first slide bar 25 can provide elasticity, let insert frame 24 insert the inside at card frame 22 always, it is possible to curl a bit before having avoided some paper to get into the printer, lead to the paper when the selenium drum, because the writing that the curling messenger of paper was played is unclear.

Example three:

referring to fig. 1 and 8, on the basis of the first embodiment and the second embodiment, the present invention provides a technical solution: the outer wall of the collecting box 7 is provided with a clamping groove 28, the inner wall of the clamping groove 28 is movably connected with a second sliding rod 30, the outer wall of the second sliding rod 30 is movably connected with a positioning plate 29, one end of the second sliding rod 30 is fixedly connected with a first magnetic block 31, the outer wall of the first magnetic block 31 is movably connected with a second magnetic block 32, one ends, close to each other, of the first magnetic block 31 and the second magnetic block 32 are different magnetic poles, the outer wall of the second magnetic block 32 is slidably connected with a guide rail 33, and the inner wall of the second magnetic block 32 is movably connected with an inserting rod 34.

In the embodiment, by arranging the positioning plate 29 and other structures, one end of the collection box 7 is clamped in the support 1, then the second slide bar 30 is moved, so that the second slide bar 30 passes through the clamping groove 28 on the collection box 7, then the second slide bar 30 is rotated, under the action of the first magnetic block 31, the second slide bar 30 cannot slide, so that the collection box 7 is clamped on the support 1, when one ends of the first magnetic block 31 and the second magnetic block 32, which are close to each other, are opposite magnetic poles, the inserting rod 34 is pulled out, under the action of magnetic force, the second magnetic block 32 slides along the guide rail 33, so as to be attracted together with the first magnetic block 31, so that the first magnetic block 31 is prevented from rotating, the second slide bar 30 and the collection box 7 are possibly separated, then the inserting rod 34 passes through the second magnetic block 32 and the guide rail 33, the inserting rod 34 can be placed at a proper position, and through the matching use of the above components, the problem that the waste powder collection box 7 on the toner cartridge is generally fixed together with the scraper 6 is solved, every time the waste powder collecting box 7 is checked, the screw on the scraper 6 is taken down by using the screwdriver so as to take the waste powder collecting box 7, so that the operation is complicated.

The utility model discloses a theory of operation and use flow: by arranging the structures such as the slide rail 11, when the developing device is used, the two carriages 10 on the second round bar 8 slide along the slide rail 11, when the carriages 10 slide to a proper position, the bolt 12 penetrates through the carriages 10 and the slide rail 11, at the moment, the rubber rod 9 is in contact with the developing roller 4, powder can be adhered by the rubber rod 9 only by rotating the developing roller 4, the worm 14 is clamped in the storage groove 17 on the fixing frame 16, the worm 14 can also rotate, the worm 14 is meshed with the worm wheel 13, the rotating disc 15 is rotated, the worm 14 drives the worm wheel 13 to rotate, the rubber rod 9 is rotated, the developing roller 4 is driven to rotate, the rubber rod 9 can adhere dust on the developing roller 4, the clamping block 19 is clamped on the fixing frame 16 in order to prevent the worm 14 from separating from the fixing frame 16, the ring 18 on the worm 14 prevents the worm 14 from moving downwards, and by matching the components, a part of powder is prevented from being adhered on the developing roller 4, after a long time, more powder on the surface of the developing roller 4 is gathered, so that the service life of the developing roller 4 is shortened, the pressing frame 21 is clamped between the two fixing plates 20, then the clamping frame 22 is rotated to clamp the clamping frame 22 on the two sides of the fixing plates 20, the effect of fixing the pressing frame 21 on the support 1 is achieved, the bottom of the pressing frame 21 is arc-shaped, paper can be pressed flatly, then the first sliding rod 25 is moved, the inserting frame 24 penetrates through the clamping frame 22 to avoid the rotation of the clamping frame 22, further the separation of the pressing frame 21 and the fixing plates 20 is avoided, the spring 27 on the first sliding rod 25 can provide elasticity, the inserting frame 24 is always inserted into the clamping frame 22, the problem that some paper can be curled before entering the printer, so that the printed handwriting is unclear due to the curling of the paper is avoided, one end of the collecting box 7 can be clamped in the support 1, then, the second sliding rod 30 is moved, the second sliding rod 30 penetrates through the clamping groove 28 on the collection box 7, then the second sliding rod 30 is rotated, under the action of the first magnetic block 31, the second sliding rod 30 cannot slide, so that the collection box 7 is clamped on the bracket 1, when one ends of the first magnetic block 31 and the second magnetic block 32, which are close to each other, are opposite magnetic poles, the inserting rod 34 is pulled out, under the action of magnetic force, the second magnetic block 32 slides along the guide rail 33, so as to be attracted with the first magnetic block 31, the first magnetic block 31 is prevented from rotating, the second sliding rod 30 and the collection box 7 are possibly separated, then the inserting rod 34 penetrates through the second magnetic block 32 and the guide rail 33, the inserting rod 34 can be placed at a proper position, and through the matching use of the above components, the problem that the waste powder collection box 7 on the selenium drum is generally fixed with the scraper 6 is solved, and a screwdriver is required to take down the waste powder collection box 7 after checking down, making the operation more complicated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a printer selenium drum mounting bracket with clean mechanism, includes support (1), its characterized in that: the outer wall swing joint of support (1) has powder box (2), support (1) is for the outer wall fixedly connected with conductor roll (5) of powder box (2), the outer wall fixedly connected with scraper (6) of support (1), the outer wall swing joint of support (1) for scraper (6) has collection box (7), the inner wall rotation of support (1) is connected with first round bar (3), the outer wall fixedly connected with developer roll (4) of first round bar (3), the outer wall of conductor roll (5) and the outer wall sliding connection frame of developer roll (4), the outer wall of scraper (6) and the outer wall sliding connection of developer roll (4), the even fixedly connected with two slide rails (11) of outer wall of support (1), the outer wall swing joint of slide rail (11) has carriage (10), two rotate between the outer wall that carriage (10) are close to each other and be connected with second round bar (8), the outer wall of second pole (8) and the outer wall swing joint of developer roll (4), the inner wall activity of balladeur train (10) has bolt (12), the outer wall fixedly connected with of second pole (8) glues stick (9), the outer wall swing joint of the outer wall of gluing stick (9) and developer roll (4).

2. The printer cartridge mounting frame with the cleaning mechanism according to claim 1, wherein: two even fixedly connected with fixed plates (20) of outer wall of support (1), swing joint has between the outer wall that fixed plate (20) are close to each other presses frame (21), two the outer wall joint of fixed plate (20) has two card framves (22), the inner wall fixedly connected with stand (23) of card frame (22), the outer wall of stand (23) rotates with the outer wall of support (1) and is connected.

3. The printer cartridge mounting frame with the cleaning mechanism according to claim 1, wherein: a clamping groove (28) is formed in the outer wall of the collecting box (7), a second sliding rod (30) is movably connected to the inner wall of the clamping groove (28), a positioning plate (29) is movably connected to the outer wall of the second sliding rod (30), and a first magnetic block (31) is fixedly connected to one end of the second sliding rod (30).

4. The printer cartridge mounting frame with the cleaning mechanism according to claim 1, wherein: the outer wall fixedly connected with worm wheel (13) of second pole (8), the outer wall meshing of worm wheel (13) has worm (14), the one end fixedly connected with carousel (15) of worm (14), support (1) is for outer wall fixedly connected with mount (16) of worm (14), the outer wall of mount (16) has been seted up and has been put thing groove (17), put the inner wall of thing groove (17) and the outer wall swing joint of worm (14).

5. The printer cartridge mounting frame with the cleaning mechanism as claimed in claim 4, wherein: the inner wall joint of mount (16) has fixture block (19), the outer wall fixedly connected with ring (18) of worm (14), the outer wall swing joint of ring (18) and the outer wall of mount (16).

6. The printer cartridge mounting frame with the cleaning mechanism according to claim 2, wherein: two the inner wall swing joint of card frame (22) has inserted frame (24), the first slide bar (25) of the outer wall fixedly connected with of inserted frame (24), the outer wall sliding connection of first slide bar (25) has limiting plate (26).

7. The printer cartridge mounting frame with the cleaning mechanism of claim 6, wherein: the outer wall cover of first slide bar (25) has spring (27), the both ends of spring (27) respectively with limiting plate (26) be the outer wall and the outer wall fixed connection of first slide bar (25).

8. The printer cartridge mounting frame with the cleaning mechanism of claim 3, wherein: the outer wall of the first magnetic block (31) is movably connected with a second magnetic block (32), one ends, close to each other, of the first magnetic block (31) and the second magnetic block (32) are opposite magnetic poles, the outer wall of the second magnetic block (32) is connected with a guide rail (33) in a sliding mode, and the inner wall of the second magnetic block (32) is movably connected with an inserting rod (34).

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