阅读说明：本技术 一种造纸用真空托辊 (Vacuum carrier roller for papermaking ) 是由 夏福兰 陶俊 于 2020-07-27 设计创作，主要内容包括：本发明涉及造纸设备技术领域,具体的说是一种造纸用真空托辊,包括支撑架、真空托辊和调节握把,所述真空托辊活动卡接在支撑架的顶端中心,所述调节握把活动套接在真空托辊的两端边缘外表面,所述支撑架的顶端面开设有卡接槽,所述支撑架的侧面中心底部焊接有套接管,所述套接管的一端面活动插接有连接杆,所述套接管的一端外表面边缘螺旋连接有挤压螺丝,所述真空托辊的两端螺旋紧固连接有定位轴杆,所述定位轴杆的外表面边缘均匀开设有插接槽。本发明可以在涂抹防腐剂时,便于工作人员对真空托辊进行转动,使工作人员对真空托辊的底部外表面进行涂抹防腐剂,从而便于对真空托辊外表面处理进行处理。(The invention relates to the technical field of papermaking equipment, in particular to a vacuum carrier roller for papermaking, which comprises a support frame, a vacuum carrier roller and an adjusting handle, wherein the vacuum carrier roller is movably clamped in the center of the top end of the support frame, the adjusting handle is movably sleeved on the outer surfaces of the edges of two ends of the vacuum carrier roller, a clamping groove is formed in the top end face of the support frame, a sleeve pipe is welded at the bottom of the center of the side face of the support frame, a connecting rod is movably inserted into one end face of the sleeve pipe, an extrusion screw is spirally connected to the edge of the outer surface of one end of the sleeve pipe, two ends of the vacuum carrier roller are spirally and tightly connected with a positioning shaft lever. The invention can facilitate the working personnel to rotate the vacuum carrier roller when the preservative is coated, so that the working personnel can coat the preservative on the outer surface of the bottom of the vacuum carrier roller, thereby facilitating the treatment on the outer surface of the vacuum carrier roller.)

1. The utility model provides a vacuum bearing roller for papermaking, includes support frame (1), vacuum bearing roller (2) and adjusts handle (3), its characterized in that: the adjustable vacuum carrier roller is characterized in that the vacuum carrier roller (2) is movably clamped at the center of the top end of the support frame (1), the adjusting handle (3) is movably sleeved on the outer surfaces of the edges of the two ends of the vacuum carrier roller (2), the top end face of the support frame (1) is provided with a clamping groove (12), the bottom of the center of the side face of the support frame (1) is welded with a sleeve pipe (13), one end face of the sleeve pipe (13) is movably inserted with a connecting rod (14), the outer surface edge of one end of the sleeve pipe (13) is spirally connected with an extrusion screw (11), the two ends of the vacuum carrier roller (2) are spirally and tightly connected with a positioning shaft lever (22), and the outer surface edge of the.

2. The vacuum carrier roller for papermaking according to claim 1, characterized in that: the adjusting handle (3) is internally and symmetrically provided with a sleeve joint device (31), and the outer surface of the sleeve joint device (31) is movably sleeved with an adjusting device (32).

3. The vacuum carrier roller for papermaking according to claim 2, characterized in that: the socket joint device is characterized in that a limiting sliding groove (317) is formed in the outer portion of the socket joint device (31) in a penetrating mode, an inserting rod (311) is movably inserted into one end of the socket joint device (31), a sleeve ring (314) is formed in the center of the side face of the other end of the socket joint device (31), a connecting rope (316) is inserted into the inner portion of the socket joint device (31) in a penetrating mode, inserting blocks (315) are fixedly connected to the two ends of the connecting rope (316), first springs (313) are fixedly connected to the edges of the two sides of the top face of each inserting block (315), and a first limiting clamping groove (312) is formed in the center of the top.

4. The vacuum carrier roller for papermaking according to claim 2, characterized in that: a sleeve (321) is fixedly installed inside the adjusting device (32), two ends of the sleeve (321) are provided with a sleeve hole (331) in a penetrating manner, a connecting groove (332) is formed in the center of the inner surface of the sleeve hole (331), a second inserting rod (322) is movably inserted in the outer surfaces of the two ends of the sleeve (321), a second cross rod (325) is welded on the top end face of the second inserting rod (322), a second limiting clamping groove (324) is formed in the outer surface of the edge of the top end of the second inserting rod (322), a second spring (326) is fixedly connected on the inner bottom face of the second limiting clamping groove (324), a limiting sleeve (328) is welded on the bottom end of the second inserting rod (322), a first inserting rod (327) is movably inserted in the second spring (326), a first cross rod (323) is welded on the top end face of the first inserting rod (327), and a fastening rod (329) is fixedly connected on the bottom end of the first inserting rod (327), the bottom end of the fastening rod (329) is fixedly connected with an arc clamping plate (330).

5. The vacuum carrier roller for papermaking according to claim 1, characterized in that: the vacuum carrier roller (2) is movably clamped with the center of the top end surface of the support frame (1) through a clamping groove (12).

6. The vacuum carrier roller for papermaking according to claim 2, characterized in that: the sleeving device (31) is movably sleeved with the positioning shaft rods (22) at the two ends of the vacuum carrier roller (2) through lantern rings (314) at the two ends.

7. A vacuum idler for papermaking according to claim 3, characterised in that: the connecting rope (316) at the top end of the inserting block (315) is fixedly connected with the inner top surface of the first limiting clamping groove (312), and the inserting block (315) is movably clamped with the inserting groove (21) on the outer surface of the positioning shaft lever (22) in the first limiting clamping groove (312).

8. The vacuum carrier roller for papermaking according to claim 4, characterized in that: the bottom end of the second spring (326) is fixedly connected with the top end of the first inserting rod (327) in the second limiting clamping groove (324), the second inserting rod (322) is movably sleeved with the outer surface of the connecting rope (316) through the limiting sleeve (328) at the bottom end, the arc-shaped clamping plate (330) at the bottom end of the first inserting rod (327) is movably clamped with the outer surface of the bottom end of the limiting sleeve (328), the outer surface of the arc-shaped clamping plate (330) is in contact and extrusion with the outer surface of the connecting rope (316), the sleeve (321) is movably sleeved with the outer surface of the sleeving device (31) through the sleeving hole (331), and the second inserting rod (322) is movably inserted through the second spring (326) at the bottom end and the connecting groove (332).

Technical Field

The invention relates to the technical field of papermaking equipment, in particular to a vacuum carrier roller for papermaking.

Background

The vacuum carrier roller is widely used in the field of papermaking, the vacuum carrier roller can remove most of moisture in paper pulp, the drying time of a dryer is shortened, the production cost of indirectness reduction is reduced, the production efficiency is improved, but the existing vacuum carrier roller for papermaking is used for a long time, the surface of the vacuum carrier roller can be rusted, the paper is damaged in the production process, the normal production of the paper is seriously influenced, the outer surface of the vacuum carrier roller needs to be treated, and the influence on the normal production of the paper is avoided.

At present, when handling vacuum bearing roller, need erect vacuum bearing roller, make the staff to the vacuum bearing roller surface of corrosion derust the processing, and paint the anticorrosive coating to the surface of vacuum bearing roller, but current vacuum bearing roller support frame simple structure only can play simple supporting role, when painting the anticorrosive moreover, the staff of being not convenient for manually makes the vacuum bearing roller rotate, the influence is to the efficiency of vacuum bearing roller surface treatment, so need a vacuum bearing roller for papermaking, in order to solve the problem that proposes in the aforesaid.

Disclosure of Invention

The invention aims to provide a vacuum carrier roller for papermaking, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a vacuum carrier roller for papermaking, includes support frame, vacuum carrier roller and adjusts the handle, the activity joint of vacuum carrier roller is in the top center of support frame, adjust the handle activity and cup joint at the both ends marginal surface of vacuum carrier roller, the joint groove has been seted up to the top face of support frame, the welding of side center bottom of support frame has the bell and spigot pipe, the activity of a terminal surface of bell and spigot pipe is pegged graft and is had the connecting rod, the one end surface edge screwed connection of bell and spigot pipe has the extrusion screw, the both ends screw fastening of vacuum carrier roller is connected with the location axostylus axostyle, the inserting groove has evenly been.

Specifically, the inside symmetry of adjusting the handle is installed and is cup jointed the device, the surface activity of cup jointing the device is cup jointed adjusting device.

Specifically, the outside of cup jointing the device runs through and has seted up spacing spout, the one end activity of cup jointing the device is pegged graft and is had the inserted bar, the lantern ring has been seted up at the other end side center of cup jointing the device, the inside activity of cup jointing the device is interlude has the connection rope, the equal fixedly connected with in both ends of connection rope inserts the piece, the equal fixedly connected with first spring in top surface both sides edge of inserting the piece, first spacing draw-in groove has been seted up at the internal surface top surface center of the lantern ring.

Specifically, adjusting device's inside fixed mounting has the sleeve pipe, the sheathed tube both ends link up and have seted up the cup joint hole, the spread groove has been seted up at the internal surface center in cup joint hole, the activity of the outer surface at sheathed tube both ends is pegged graft there is the second inserted bar, the welding of the top face of second inserted bar has the second horizontal pole, the spacing draw-in groove of second has been seted up to the marginal surface in top of second inserted bar, the inside bottom surface fixedly connected with second spring of the spacing draw-in groove of second, the welding of the bottom of second inserted bar has spacing sleeve, the inside activity of second spring is pegged graft there is first inserted bar, the welding of the top face of first inserted bar has first horizontal pole, the bottom fixedly connected with anchorage bar of first inserted bar, the bottom fixedly connected with arc joint plate of anchorage bar.

Specifically, the vacuum carrier roller is movably clamped with the center of the top end face of the support frame through a clamping groove.

Specifically, the sleeving device is movably sleeved with the positioning shaft rods at two ends of the vacuum carrier roller through lantern rings at two ends.

Specifically, the connecting rope on the top end of the inserting block is fixedly connected with the inner top surface of the first limiting clamping groove, and the inserting block is movably clamped with the inserting groove on the outer surface of the positioning shaft rod in the first limiting clamping groove.

Specifically, the bottom of second spring is in the inside of the spacing draw-in groove of second and the top looks fixed connection of first inserted bar, the spacing sleeve that the second inserted bar passes through the bottom cup joints with the surface of being connected the rope mutually movably, the arc joint board and the bottom surface looks activity joint of spacing sleeve of first inserted bar bottom, just the surface of arc joint board contacts the extrusion with the surface of being connected the rope, the sleeve pipe cup joints with the surface of cup jointing the device through cup jointing the hole mutually movably, the second inserted bar runs through grafting with the draw-in groove looks activity through the second spring of bottom.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the invention, the two ends of the vacuum carrier roller can be clamped through the sleeve connection devices symmetrically arranged in the adjusting handle, so that the sleeve connection devices are pushed to drive the vacuum carrier roller to rotate at the top end of the support frame, the adjusting devices movably sleeved on the outer surface of the sleeve connection devices can transversely move on the outer surface of the sleeve connection devices according to the position of a worker for smearing the preservative, and the worker is prevented from moving back and forth.

(2) The two ends of the sleeve are communicated with the sleeve connecting holes, the sleeve can be conveniently sleeved on the outer surface of the sleeve connecting device, the connecting groove is formed in the center of the inner surface of the sleeve connecting hole, when the second inserting rod descends, the inner surface of the sleeve is prevented from blocking the bottom end of the second inserting rod, the second limiting clamping groove is formed in the outer surface of the edge of the top end of the second inserting rod, the first inserting rod at the two ends can be conveniently driven by the first cross rod to slide up and down in the second inserting rod, the second spring fixedly connected with the bottom surface of the inner part of the second limiting clamping groove can shrink to generate elastic force when the first inserting rod ascends, the elastic force generated by the shrinkage of the second spring can provide power for the first inserting rod to restore to the initial position, wherein the first inserting rod drives the arc-shaped clamping plate to extrude the connecting rope in the limiting sleeve through the fastening rod at the bottom end, and when the, the connecting rope slides in the limiting sleeve, so that the inserting block of the connecting rope is not controlled.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the supporting frame of the present invention;

FIG. 3 is a schematic view of the vacuum idler structure of the present invention;

FIG. 4 is a schematic view of an adjustable grip according to the present invention;

FIG. 5 is a partially cut-away schematic view of the socketing device of the present invention;

fig. 6 is a schematic sectional view of the adjusting device of the present invention.

In the figure: 1-a support frame, 11-an extrusion screw, 12-a clamping groove, 13-a sleeve pipe, 14-a connecting rod, 2-a vacuum carrier roller, 21-an inserting groove, 22-a positioning shaft rod, 3-an adjusting handle, 31-a sleeve device, 311-an inserting rod, 312-a first limiting clamping groove, 313-a first spring, 314-a lantern ring and 315-an inserting block, 316-connecting rope, 317-limiting sliding groove, 32-adjusting device, 321-sleeve, 322-second plug rod, 323-first cross rod, 324-second limiting clamping groove, 325-second cross rod, 326-second spring, 327-first plug rod, 328-limiting sleeve, 329-fastening rod, 330-arc clamping plate, 331-sleeve hole and 332-connecting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown: a vacuum carrier roller for papermaking comprises a support frame 1, a vacuum carrier roller 2 and an adjusting handle 3, wherein the vacuum carrier roller 2 is movably clamped at the top center of the support frame 1, the adjusting handle 3 is movably sleeved on the outer surfaces of the edges of two ends of the vacuum carrier roller 2, a clamping groove 12 is formed in the top end surface of the support frame 1, a sleeve pipe 13 is welded at the bottom of the center of the side surface of the support frame 1, a connecting rod 14 is movably inserted into one end surface of the sleeve pipe 13, an extrusion screw 11 is spirally connected to the outer surface edge of one end of the sleeve pipe 13, a positioning shaft lever 22 is spirally and tightly connected to two ends of the vacuum carrier roller 2, inserting grooves 21 are uniformly formed in the outer surface edge of the positioning shaft lever 22, sleeve devices 31 symmetrically installed inside the adjusting handle 3 can clamp two ends of the vacuum carrier roller 2, and therefore the sleeve devices, adjusting device 32 that the surface activity of cup jointing device 31 cup jointed can carry out lateral shifting at the surface of cup jointing device 31 according to the antiseptic position of smearing of staff to avoid staff's round trip movement.

The outer part of the sleeve device 31 penetrates through a limit sliding groove 317, a second plug rod 322 in the adjusting device 32 can slide transversely in the sleeve device 31, a plug rod 311 movably inserted at one end of the sleeve device 31 can connect one ends of two groups of sleeve devices 31, a lantern ring 314 arranged in the center of the side face of the other end of the sleeve device 31 can facilitate the lantern ring 314 at one end of the sleeve device 31 to be sleeved with the positioning shaft rod 22 at one end of the vacuum carrier roller 2, a connecting rope 316 movably inserted in the inner part of the sleeve device 31 can connect plug blocks 315 in the lantern rings 314 at two ends, first springs 313 fixedly connected with the edges of two sides of the top face of the plug blocks 315 can support the plug blocks 315 in the first limit clamping groove 312, and the plug blocks 315 can be ensured to be tightly inserted in the plug grooves 21 on the outer surface of the positioning shaft rod 22, the sleeving device 31 can drive the vacuum carrier roller 2 to rotate at the top end of the support frame 1 when rotating.

The two ends of the sleeve 321 are provided with a sleeve hole 331 in a penetrating manner, which is convenient for the sleeve 321 to be sleeved on the outer surface of the sleeve device 31, the connecting groove 332 is provided in the center of the inner surface of the sleeve hole 331, which is convenient for the inner surface of the sleeve 321 to block the bottom end of the second inserting rod 322 when the second inserting rod 322 descends, the second limiting clamping groove 324 is provided in the outer surface of the top edge of the second inserting rod 322, which is convenient for the first cross rod 323 to drive the first inserting rod 327 at the two ends to slide up and down in the second inserting rod 322, the second spring 326 fixedly connected with the inner bottom surface of the second limiting clamping groove 324 can be contracted to generate elastic force when the first inserting rod 327 ascends, and the elastic force generated by the contraction of the second spring 326 can provide power for the first inserting rod 327 to restore the initial position, wherein the first inserting rod 327 drives the arc-shaped clamping plate 330 to extrude the connecting rope 316 in the limiting sleeve 328 through, the limiting sleeve 328 can be prevented from sliding inside the limiting sleeve 328 when pushing the connecting rope 316, so that the plugging block 315 of the connecting rope 316 is not controlled.

Specifically, adjust the inside symmetry of handle 3 and install and cup joint device 31, can carry out the joint to the both ends of vacuum bearing roller 2 to be convenient for promote to cup joint device 31 and drive vacuum bearing roller 2 and rotate on the top of support frame 1, cup joint device 31's surface activity has cup jointed adjusting device 32, can paint antiseptic position according to the staff, carries out lateral shifting at the surface that cup joints device 31, thereby avoids staff's round trip movement.

Specifically, the outside of cup joint device 31 runs through and has seted up spout 317, the inside second inserted link 322 of adjusting device 32 that can be convenient for is at the inside lateral sliding of cup joint device 31, the one end activity of cup joint device 31 is pegged graft and is had inserted link 311, lantern ring 314 has been seted up at the other end side center of cup joint device 31, the inside activity interlude of cup joint device 31 has connected rope 316, the equal fixedly connected with in both ends of connecting rope 316 inserts piece 315, the first spring 313 of the equal fixedly connected with in top surface both sides edge of inserting piece 315, first spacing draw-in groove 312 has been seted up at the internal surface top surface center of lantern ring 314, can restrict the gliding position from top to bottom of inserting piece 315, guarantee to adjust handle 3 when rotating, can drive vacuum bearing roller 2 through inserting piece 315 and rotate.

Specifically, a sleeve 321 is fixedly installed inside the adjusting device 32, two ends of the sleeve 321 penetrate through a sleeve hole 331 formed in the sleeve 321, the sleeve 321 can be conveniently sleeved on the outer surface of the sleeve device 31, a connecting groove 332 formed in the center of the inner surface of the sleeve hole 331 can be convenient for preventing the inner surface of the sleeve 321 from blocking the bottom end of the second inserting rod 322 when the second inserting rod 322 descends, a second limiting clamping groove 324 formed in the outer surface of the top end edge of the second inserting rod 322 can be convenient for the first cross rod 323 to drive the first inserting rods 327 at two ends to slide up and down inside the second inserting rod 322, a second spring 326 fixedly connected to the inner bottom surface of the second limiting clamping groove 324 can be contracted to generate elastic force when the first inserting rod 327 ascends, the elastic force generated by the contraction of the second spring 326 can provide power for the first inserting rod 327 to restore the initial position, wherein the first inserting rod 327 drives the arc-shaped clamping plate 330 to extrude the connecting rope 316 inside the limiting sleeve through a fastening rod 329 at the bottom end, the limiting sleeve 328 can be prevented from sliding inside the limiting sleeve 328 when pushing the connecting rope 316, so that the plugging block 315 of the connecting rope 316 is not controlled.

Specifically, the connecting rope 316 at the top end of the inserting block 315 is fixedly connected with the top surface of the inside of the first limiting clamping groove 312, the inserting block 315 is movably clamped with the inserting groove 21 on the outer surface of the positioning shaft rod 22 inside the first limiting clamping groove 312, and slides downwards inside the first limiting clamping groove 312 to be inserted into the inserting groove 21 on the outer surface of the positioning shaft rod 22, the bottom end of the second inserting rod 322 is driven by the connecting rope 316 to retract to the initial position inside the sleeving hole 331, then the external force on the outer surface of the adjusting device 32 is completely removed, the outer surfaces of the two groups of deflected sleeving devices 31 are pushed, meanwhile, under the clamping of the sleeving ring 314 with the inserting groove 21 through the inserting block 315 on the inner surface, the vacuum carrier roller 2 is driven to rotate at the center of the top end surface of the support frame 1, the outer surface of the vacuum carrier roller 2 at the bottom is rotated to the top, so that a worker can conveniently process the outer surface of the vacuum, the working efficiency of the working personnel is improved.

Specifically, the bottom end of the second spring 326 is fixedly connected with the top end of the first plug rod 327 inside the second limiting slot 324, the second plug rod 322 is movably sleeved with the outer surface of the connecting rope 316 through a limiting sleeve 328 at the bottom end, the arc-shaped clamping plate 330 at the bottom end of the first plug rod 327 is movably clamped with the outer surface at the bottom end of the limiting sleeve 328, the outer surface of the arc-shaped clamping plate 330 contacts and extrudes the outer surface of the connecting rope 316, the sleeve 321 is movably sleeved with the outer surface of the sleeving device 31 through the sleeving hole 331, the second inserting rod 322 is movably inserted through the connecting groove 332 through the second spring 326 at the bottom end, the top end of the first inserting rod 327 can press the second spring 326 inside the second limiting slot 324 to compress to generate elastic force, and the elastic force generated by the compression of the second spring 326 can push the first cross rod 323 to drive the first inserting rods 327 at two ends to return to the initial position inside the second inserting rod 322.

The working principle is as follows: when the outer surface of the vacuum carrier roller 2 is processed, firstly, two sets of sleeving devices 31 in the adjusting handle 3 are pulled to be away from each other, meanwhile, the insertion rod 311 can slide at one end of the sleeving device 31 until the lantern ring 314 can be movably sleeved with the positioning shaft rods 22 at the two ends of the vacuum carrier roller 2, then the two sets of sleeving devices 31 are pushed to be close to each other until the lantern ring 314 is sleeved on the outer surface of the insertion groove 21, then the vacuum carrier roller 2 is lifted to be close to the support frame 1 by using a lifting machine, the positioning shaft rods 22 at the two ends of the vacuum carrier roller 2 are movably clamped with the clamping groove 12 at the center of the top end of the support frame 1, then a worker can perform sand blasting and rust removal on the outer surface of the vacuum carrier roller 2, then, an antiseptic is coated on the outer surface of the vacuum carrier roller 2, when the coating on the outer surface of the vacuum carrier roller 2 above is completed, the vacuum carrier roller 2 needs to rotate, until the adjusting device 32 slides to a required position on the outer surface of the socket device 31, then the outer surface of the second cross bar 325 is held by a hand, and a finger pulls the first cross bar 323 to slide upwards to be close to the outer surface of the second cross bar 325, meanwhile, the first cross bar 323 can drive the first inserting bars 327 at two ends to slide upwards in the second inserting bars 322, the top ends of the first inserting bars 327 can squeeze the second springs 326 in the second limiting clamping grooves 324 to generate elastic force, the bottom ends of the first inserting bars 327 can drive the arc-shaped clamping plates 330 to squeeze the connecting ropes 316 in the limiting sleeves 328 through the fastening rods 329, the connecting ropes 316 are fixed in the sleeve 38, then the second cross bar 325 is pressed forcefully to drive the connecting ropes 316 to descend in the sleeve 321 through the limiting sleeves 328 at the bottom ends until the limiting sleeves 328 drive the connecting ropes 316 to penetrate through the second inserting bars 322, meanwhile, when the connecting rope 316 is pulled, two ends of the connecting rope 316 slide toward the center of the adjusting device 32 in the limiting sliding groove 317, and simultaneously two ends of the connecting rope 316 drive the plugging block 315 to contract toward the inside of the first limiting clamping groove 312, and the first spring 313 extruding the top surface contracts to generate elastic force, and the bottom end of the plugging block 315 separates from the plugging groove 21 on the outer surface of the positioning shaft rod 22, and then the adjusting device 32 is pulled to drive the two sets of socket joint devices 31 to rotate around the lantern ring 314, after the required position is reached, the external force on the outer surfaces of the first cross rod 323 and the second cross rod 325 is removed, and simultaneously the plugging block 315 slides downward in the inside of the first limiting clamping groove 312 under the action of the elastic force on the outer surface of the first spring 313 on the top surface to be plugged into the plugging groove 21 on the outer surface of the positioning shaft rod 22, and the bottom end of the second plugging rod 322 is driven by the connecting rope 316, to the inside of cup jointing hole 331 and retracting to initial position, then unload the external force of adjusting device 32 surface completely, promote two sets of cup jointing device 31 surfaces after deflecting, simultaneously under the grafting piece 315 of lantern ring 314 through the internal surface and the joint of inserting groove 21, can drive vacuum bearing roller 2 and rotate at the top end face center of support frame 1, the surface that makes vacuum bearing roller 2 be in the bottom rotates to the top, thereby be convenient for the staff to handle the surface of vacuum bearing roller 2, improve staff's work efficiency.

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.