CN106865232B

CN106865232B - Conveying device

Info

Publication number: CN106865232B
Application number: CN201710295170.0A
Authority: CN
Inventors: 谢少华; 黄二元; 冷金辉; 刘祖宏; 訾玉宝
Original assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei BOE Optoelectronics Technology Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2020-01-10
Anticipated expiration: 2037-04-28
Also published as: CN106865232A

Abstract

The invention discloses a conveying device, and belongs to the technical field of semiconductor processing. The conveying device comprises a rotating part and at least one group of conveying wheels, wherein the conveying wheels are installed on the rotating part, each group of conveying wheels comprise a plurality of rollers, the rollers in each group of conveying wheels are distributed by taking the rotating axis of the rotating part as a central circumference array, the rotating axes of the rollers in each group of conveying wheels and the rotating axis of the rotating part are located on different planes, the rollers are arranged in a circumferential mode around the rotating part by taking the rotating axis of the rotating part as a central line, and therefore when conveying is conducted, the rollers revolve around the central line of the rotating part, and glass substrates can be conveyed in the direction of conveying lines. Because the rotation axis of the roller and the central line of the rotating part are positioned on different planes, when the glass substrate is pushed to move in the direction vertical to the conveying line, the roller can rotate, the friction force between the roller and the glass substrate is reduced, and the possibility of damage of the glass substrate is reduced.

Description

Conveying device

Technical Field

The invention relates to the technical field of semiconductor processing, in particular to a conveying device.

Background

A glass substrate is a Thin glass sheet with an extremely flat surface, is one of the key basic materials in the Flat Panel Display (FPD) industry, and is generally used as a carrier for manufacturing TFTs (Thin film transistors, chinese) and the like.

In the manufacturing process, the glass substrates are usually placed on a conveyor line, and are transported to various apparatuses through the conveyor line for processing. The glass substrate conveying line is different from a common conveying belt, the glass substrate conveying line comprises a plurality of rotating shafts which are arranged in parallel at intervals in the conveying direction, a plurality of rolling wheels are sleeved on each rotating shaft at intervals, when the glass substrates are conveyed, the glass substrates are placed on the rolling wheels of the rotating shafts, the plate surfaces of the glass substrates are in contact with the edges of the rolling wheels, the driving rolling wheels rotate, and the glass substrates are conveyed along the conveying line by utilizing the friction force between the rolling wheels and the glass substrates.

Before the glass substrate is carried into the equipment, the glass substrate needs to be aligned, and the glass substrate is aligned, for example, when a rectangular glass substrate is conveyed, the length direction of the glass substrate is parallel to the conveying direction through the alignment, and the position of the glass substrate in the direction perpendicular to the conveying direction is adjusted, so that the glass substrate is aligned with the inlet of the equipment. The counterpoint of glass substrate adopts the counterpoint to press from both sides to go on usually, and the counterpoint presss from both sides and sets up in pairs in the both sides of transmission line, and the counterpoint presss from both sides can stretch out along the direction that is on a parallel with the pivot axis, through stretching out counterpoint to press from both sides and promote glass substrate, makes glass substrate perpendicular to direction of transfer slide on the transmission line to the realization is to the counterpoint of glass substrate. However, in the existing transmission line, when the alignment clamp pushes the glass substrate to slide laterally, the roller generates a large friction force on the glass substrate, so that the alignment clamp needs to generate a large thrust force to push the glass substrate, the glass substrate is fragile, the glass substrate is damaged possibly in the process of pushing the glass substrate by the alignment clamp, the damage of the glass substrate can not only cause scrapping of a large number of glass substrates, but also can be stopped to clean the fragments, and the production efficiency is reduced.

Disclosure of Invention

In order to solve the problem that a glass substrate is easy to damage when the glass substrate is aligned, the embodiment of the invention provides a conveying device. The technical scheme is as follows:

the embodiment of the invention provides a conveying device which comprises at least one rotating part and at least one group of conveying wheels for bearing a piece to be conveyed, wherein the conveying wheels are arranged on the rotating part, the rotating part is used for driving the conveying wheels to rotate, each group of conveying wheels comprise a plurality of rollers, the rollers in each group of conveying wheels are circumferentially distributed in an array mode by taking the rotating axis of the rotating part as the center, the rollers in each group of conveying wheels are rotatably arranged on the rotating part, and the rotating axes of the rollers in each group of conveying wheels and the rotating axis of the rotating part are located on different planes.

Preferably, a central plane of each of the rollers and a rotation axis of the rotation member are located on the same plane, the central plane of the roller is perpendicular to the rotation axis of the roller, and the roller is symmetrical with respect to the central plane.

Further, be provided with on the rotation piece with the axis of rotation of rotating the piece is radial outside many installation poles that extend as the center, many installation poles are located the coplanar, just many installation poles with the axis of rotation of rotating the piece is arranged as central equiangular circumference array, is equipped with one between two arbitrary adjacent installation poles the gyro wheel.

Preferably, one end of each mounting rod is connected with the rotating part, the other end of each mounting rod is provided with two support shafts extending in opposite directions, all the support shafts are located in the same plane, and the rollers are arranged on the two support shafts between every two adjacent mounting rods.

Optionally, the roller is connected with the corresponding support shaft through a bearing.

Preferably, the mounting lever is detachably connected to the rotating member.

Further, the rotating part is a mounting shaft sleeve or a rotating shaft.

Optionally, when the rotating member is an installation shaft sleeve, the transmission device further includes at least one driving shaft, and each driving shaft is coaxially sleeved with at least one installation shaft sleeve.

Optionally, when the rotating member is a rotating shaft, a plurality of sets of rollers are arranged on the rotating shaft, and the rollers are arranged at intervals along the length direction of the rotating shaft.

Optionally, the roller is of a spindle type.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: through set up at least a set of transfer gear on rotating the piece, every group transfer gear includes a plurality of gyro wheels, because a plurality of gyro wheels use the axis of rotation of rotating the piece as the central line, be the circumference around rotating the piece and arrange, consequently when carrying out the conveying, glass substrate can support on the gyro wheel, and a plurality of gyro wheels revolve around the central line revolution of rotating the piece, can convey glass substrate along the direction of transmission line. Because the rotation axis of the roller and the central line of the rotating part are positioned on different planes, when the glass substrate is pushed to move in the direction vertical to the conveying line, the roller can rotate around the rotation axis of the roller, so that the glass substrate can be pushed to slide on the conveying line in the direction vertical to the conveying direction by using smaller thrust, the friction force between the roller and the glass substrate is reduced, and the possibility of breakage of the glass substrate can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a conveying apparatus according to an embodiment of the present invention;

FIG. 2 is a front view of a conveyor provided by an embodiment of the present invention;

FIG. 3 is a side view of a mounting sleeve provided in accordance with an embodiment of the present invention;

FIG. 4 is an exploded view of a conveyor according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a roller according to an embodiment of the present invention;

fig. 6 is a schematic layout view of a rotating rod according to an embodiment of the present invention;

FIG. 7 is a schematic view of a portion of a mounting bar according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another conveying apparatus provided in the embodiment of the present invention;

FIG. 9 is a schematic structural diagram of another conveying apparatus provided in the embodiment of the present invention;

FIG. 10 is an enlarged partial schematic view of FIG. 9;

FIG. 11 is a schematic perspective view of a conveyor according to an embodiment of the present invention;

fig. 12 is a schematic view of an operating state of a conveying apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a conveying device according to an embodiment of the present invention, and fig. 2 is a front view of the conveying device according to the embodiment of the present invention. With reference to fig. 1 and 2, the conveying device includes at least one rotating member 10 and at least one set of conveying wheels for carrying the conveying member to be conveyed, the conveying wheels are mounted on the rotating member, the rotating member 10 is used for driving the conveying wheels to rotate, each set of conveying wheels includes a plurality of rollers 20, the plurality of rollers 20 in each set of conveying wheels are circumferentially arrayed around the rotating axis of the rotating member 10, the plurality of rollers 20 in each set of conveying wheels are rotatably mounted on the rotating member 10, and the rotating axes (shown by dotted lines in fig. 2) of the plurality of rollers 20 in each set of conveying wheels are located on different planes from the rotating axis of the rotating member 10.

The plurality of rollers 20 are circumferentially arranged around the center, and each of the rollers 20 has the same size and shape, and the relative position relationship between the rotation axis of each of the rollers 20 and the rotation axis of the rotating member 10 is the same, so that when any one of the rollers 20 rotates around the rotation axis of the rotating member 10 by a certain angle, the roller 20 can completely coincide with another roller 20.

According to the embodiment of the invention, at least one group of conveying wheels is arranged on the rotating part, each group of conveying wheels comprises a plurality of rollers, and the rollers are circumferentially arranged around the rotating part by taking the rotating axis of the rotating part as a central line, so that a glass substrate can be supported on the rollers during conveying, and the rollers revolve around the central line of the rotating part, so that the to-be-conveyed member (such as the glass substrate) can be conveyed along the conveying line direction. Because the rotation axis of the roller and the central line of the rotating part are positioned on different planes, when the glass substrate is pushed to move in the direction vertical to the conveying line, the roller can rotate around the rotation axis of the roller, so that the glass substrate can be pushed to slide on the conveying line in the direction vertical to the conveying direction by using smaller thrust, the friction force between the roller and the glass substrate is reduced, and the possibility of breakage of the glass substrate can be reduced.

It should be noted that, in the embodiment shown in fig. 1 and fig. 2, a set of transmission wheels is provided on the rotating member 10, and in other embodiments, a plurality of sets of transmission wheels, for example, two sets, three sets, etc., may be provided on the rotating member 10 at intervals along the axial direction thereof.

Alternatively, the rotating member 10 may be a mounting bushing or a rotating shaft. Through setting up rotation piece 10 to the installation axle sleeve to can make installation axle sleeve and the gyro wheel 20 of setting on the installation axle sleeve constitute an subassembly, conveniently with the coaxial setting of a plurality of subassemblies in order to carry out the conveying of glass substrate, when single subassembly damaged, can change the subassembly of damage, it is convenient to maintain. By providing the rollers 20 on the rotating shaft, the structure of the conveyor can be simplified and the volume thereof can be reduced.

In the transmission shown in fig. 1 and 2, the rotating member 10 is a mounting bushing. As shown in fig. 1 or 2, the mounting sleeve is provided with a key groove 11 on its inner wall to facilitate mounting of the mounting sleeve in use.

The double-headed arrow 20a in fig. 2 indicates the center plane of the roller 20. Preferably, the central plane of each roller 20 and the rotation axis of the rotation member 10 may be located on the same plane, the central plane of the roller 20 is perpendicular to the rotation axis of the roller 20 and the roller 20 is symmetrical with respect to the central plane. This makes the glass substrate better contact with the edge of the roller 20 when the glass substrate is pushed to move laterally, which facilitates the rotation of the roller.

It should be noted that the central plane of the roller 20 refers to the plane of the section with the largest diameter on the rim of the roller 20.

In other embodiments, the central plane of each roller 20 and the rotation axis of the rotating member 10 may also be at an acute angle, i.e., the central plane of the roller 20 is not perpendicular to the conveying direction.

As shown in fig. 2, the rotating member 10 may be provided with a plurality of mounting bars 30 extending radially outward with the rotation axis of the rotating member 10 as a center, the plurality of mounting bars 30 are located on the same plane, the plurality of mounting bars 30 are arranged in an equiangular circumferential array with the rotation axis of the rotating member 10 as a center, and one roller 20 is disposed between any two adjacent mounting bars 30. The mounting of the roller 20 is facilitated by the provision of a mounting bar 30. Meanwhile, the rollers 20 can be distributed more uniformly, so that the glass substrate is conveyed more stably.

Preferably, the mounting lever 30 may be detachably coupled to the rotation member 10. So that maintenance and replacement of the mounting bar 30 or the roller 20 can be facilitated.

Fig. 3 is a side view of a mounting sleeve according to an embodiment of the present invention, and as shown in fig. 3, a plurality of insertion holes 12 may be formed in the mounting sleeve, and one end of a mounting rod 30 may be inserted into the insertion holes 12. In other embodiments the mounting rod 30 and the receptacle 12 may be threadably connected.

Preferably, the plurality of insertion holes 12 are equally angularly spaced about the axis of the mounting boss, which may result in a more uniform distribution of the rollers 20.

Alternatively, the number of the insertion holes 12 may be 8 to 14, and if the number of the insertion holes 12 is too small, the distance between the rollers 20 is too large, so that the glass substrate is not stably conveyed, the glass substrate is easily damaged, and if the number of the insertion holes 12 is too large, the difficulty in mounting the rollers 20 is increased.

Fig. 4 is an exploded view of a conveyor according to an embodiment of the invention. As shown in fig. 4, one end of each of the mounting rods 30 may be connected to the rotation member 10, the other end of each of the mounting rods 30 is provided with two support shafts 31 extending in opposite directions, and all the support shafts 31 are located in the same plane, and the rollers 20 are disposed on the two support shafts 31 between the adjacent two mounting rods 30. The roller 20 is installed through two supporting shafts 31 between two adjacent installation rods 30, so that the installation of the roller 20 is facilitated, and meanwhile, the rotation of the roller 20 can be more stable by supporting one roller 20 through the two supporting shafts 31.

Every installation pole 30 and two back shafts 31 of being connected on installation pole 30 are located the coplanar, and the contained angle between two back shafts 31 and the installation pole 30 is the acute angle, can make gyro wheel 20 install more firmly like this, avoids gyro wheel 20 to drop.

Furthermore, the included angle between the mounting rod 30 and the supporting shaft 31 connected to the mounting rod 30 is half of the included angle between two adjacent mounting rods 30, so that after the mounting rods 30 are mounted on the rotating member 10, the two supporting shafts 31 between two adjacent mounting rods 30 are located on the same straight line, which is convenient for mounting the roller 20.

Preferably, the rollers 20 and the corresponding support shafts 31 may be connected by bearings 33. The rotation of the roller 20 can be facilitated to further reduce the friction.

Fig. 5 is a cross-sectional view of a roller according to an embodiment of the present invention. As shown in fig. 5, grooves 21 are respectively provided at both sides of the roller 20, a bearing 33 may be provided in the grooves 21, an outer ring of the bearing 33 is interference-fitted with the grooves 21, and an inner ring of the bearing 33 is interference-fitted with the support shaft 31.

In another implementation manner of the embodiment of the present invention, the roller 20 may be provided with a through hole 22 extending along a rotation axis of the roller 20, the conveying device may further include a rotating rod 32, the rotating rod 32 is inserted into the through hole 22, two ends of the rotating rod 32 are respectively in interference fit with the inner ring of the bearing 21, two ends of the rotating rod 32 are further respectively connected with the support shaft 31, and the connection between the roller 20 and the support shaft 31 may be facilitated by the provision of the rotating rod 32.

Fig. 6 is a schematic layout view of a rotating rod according to an embodiment of the present invention. As shown in fig. 6, both end faces of the rotating lever 32 are provided with coupling grooves 32a, and the support shaft 31 can be inserted into the coupling grooves 32 a. The coupling of the support shaft 31 to the rotating lever 32 can be facilitated by providing the coupling groove 32 a.

Fig. 7 is a partial structural schematic view of a mounting rod according to an embodiment of the present invention. As shown in fig. 7, the support shaft 31 may be tapered, and the diameter of the end of the support shaft 31 near the mounting rod 30 is larger than the diameter of the end of the support shaft 31 far from the mounting rod 30, and the coupling groove 32a may also be tapered (as shown in fig. 6), and the diameter of the groove bottom of the coupling groove 32a is smaller than the diameter of the opening of the coupling groove 32a, so that the support shaft 31 can be easily inserted into the coupling groove 32 a.

Alternatively, the roller 20 may be of a ball type, a disc type, or a spindle type. Preferably, the roller 20 is a spindle type, and the spindle type roller 20 has a larger contact area with the glass substrate, thereby facilitating the conveyance of the glass substrate along the direction of the conveyance line.

It is easy to think that the number of the rollers 20 should be as large as possible, and the gap between two adjacent rollers 20 should be as small as possible, so that the glass substrate can be conveyed more stably, and the possibility of breakage of the glass substrate is reduced.

Alternatively, the number of the rollers 20 may be 8 to 14, and if the number of the rollers 20 is too small, the glass substrate may be conveyed unstably, and the glass substrate may be easily damaged, and if the number of the rollers 20 is too large, the difficulty in mounting the rollers 20 may be increased.

Fig. 8 is a schematic structural view of another conveyor according to an embodiment of the present invention, and the conveyor shown in fig. 8 is different from the conveyor shown in fig. 1 in the structure of a rotating member. As shown in fig. 8, the rotating member 10 of the conveying device may be in a disc shape, a plurality of notches 101 may be circumferentially arranged on an edge of the disc-shaped rotating member 10, a roller 20 is disposed in each notch 101, a rim of the roller 20 extends out of a circumferential wall of the disc-shaped rotating member 10, a supporting shaft 102 for mounting the roller 20 may be disposed in each notch 101, an axial direction of the supporting shaft 102 coincides with a rotational axis of the roller 20, and the roller 20 is rotatably connected to the supporting shaft 102. The conveyor shown in fig. 8 has greater mechanical strength than the conveyor shown in fig. 1, and the rollers 20 are more securely mounted and less susceptible to damage.

It is conceivable that the disk-shaped rotor 10 may be provided with a shaft hole 103 and a key groove 104 for connection with the drive shaft.

Fig. 9 is a schematic structural view of another conveying device according to an embodiment of the present invention, and fig. 10 is an enlarged partial view of fig. 9. The transmission device shown in fig. 9 is different from the transmission device shown in fig. 1 in that in the transmission device shown in fig. 9, the rotating member 10 is a rotating shaft.

As shown in fig. 9, the rotation member 10 may be provided with a plurality of sets of transmission wheels arranged at intervals along the length direction of the rotation member 10. Through setting up the multiunit transfer gear, support the glass substrate jointly by the multiunit transfer gear, make the conveying of glass substrate more steady.

Fig. 11 is a schematic projection view of a conveyor according to an embodiment of the present invention, in which the projection of the mounting rod 30 is omitted in fig. 11, the dotted line indicates the orthographic projection of one or more sets of conveyor wheels, and the solid line indicates the orthographic projection of one or more sets of conveyor wheels. As shown in fig. 11, orthographic projections of a first part of the transmission wheels on the same rotating shaft on a plane perpendicular to the axis of the rotating member 10 coincide, orthographic projections of a second part of the transmission wheels on the same rotating shaft on a plane perpendicular to the axis of the rotating member 10 coincide, and the orthographic projections of the two parts of the transmission wheels do not coincide, wherein the first part of the transmission wheels refers to a plurality of groups of the transmission wheels, the second part of the transmission wheels refers to a plurality of groups of the transmission wheels different from the first part of the transmission wheels, and the sum of the number of the groups of the first part of the transmission wheels and the number of the groups of the second part of the transmission wheels is smaller than or equal to the total number of the groups of the transmission wheels on the same. Therefore, the situation that the central plane of one roller 20 in each group of transmission wheels is vertical to the glass substrate does not occur in all groups of transmission wheels on the same rotating member 10, and the bumping of the glass substrate in the transmission process can be reduced.

In the present embodiment, the orthographic projection of any one roller 20 of one set of the transmission wheels on the plane perpendicular to the axis of the rotation member 10 is between the orthographic projections of the adjacent two rollers 20 of the other set of the transmission wheels on the plane perpendicular to the axis of the rotation member 10, and the orthographic projections of the two sets of the transmission wheels provided every 1 set of the transmission wheels are overlapped on the plane perpendicular to the axis of the rotation member 10.

In other embodiments, other arrangements may be used, for example, two sets of transmission wheels are provided at intervals of 1 set of transmission wheels, and the orthographic projection of any one roller of one set of transmission wheels on a plane perpendicular to the axis of the rotating member 10 is located between the orthographic projections of two adjacent rollers of the other set of transmission wheels on a plane perpendicular to the axis of the rotating member 10, and the orthographic projections of the two adjacent sets of transmission wheels on the plane perpendicular to the axis of the rotating member 10 are coincident. As another example, the orthographic projections of all sets of transfer wheels on a plane perpendicular to the axis of the rotary member 10 coincide.

Fig. 12 is a schematic diagram of an operating state of a conveying device according to an embodiment of the present invention, and fig. 12 illustrates an operating state of the conveying device shown in fig. 1. As shown in fig. 12, when the rotating member 10 is a mounting sleeve, the transmission device may further include at least one driving shaft 41, and each driving shaft 41 is coaxially sleeved with at least one mounting sleeve. So that the transfer wheel can be driven to rotate by the drive shaft 41 to transfer the glass substrate 43. Preferably, a plurality of mounting bosses may be provided on the driving shaft 41, at least one set of transfer wheels may be provided on each mounting boss, and the plurality of mounting bosses may be provided at equal intervals in the axial direction of the driving shaft 41. Thus, the glass substrate can be conveyed by controlling the rotation of the driving shaft 41.

Preferably, the transmission device may include a plurality of driving shafts 41, and the plurality of driving shafts 41 are disposed in parallel and spaced apart and located on the same plane. Each of the drive shafts 41 is provided with a plurality of mounting bosses, and the glass substrate 43 is supported by a plurality of sets of conveying wheels and is moved in a conveying direction (a direction indicated by a one-way arrow a in fig. 12) by rotation of the drive shafts 41. The aligning jig 42 is movable in the axial direction of the drive shaft 41, thereby pushing the glass substrate to move in the direction perpendicular to the conveyance direction (the direction indicated by the double-headed arrow B in fig. 12).

It is easily conceivable that each set of transfer wheels, which are fitted around the same drive shaft 41, comprises the same number of rollers.

In use, the transfer apparatus shown in fig. 9 may be configured such that a plurality of shafts are disposed in parallel and spaced apart on the same plane, and the shafts are driven to rotate to transfer the substrate 43.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A conveying device is characterized by comprising at least one rotating part and at least one group of conveying wheels for bearing a piece to be conveyed, wherein the conveying wheels are installed on the rotating part, the rotating part is used for driving the conveying wheels to rotate, each group of conveying wheels comprise a plurality of rollers, the rollers in each group of conveying wheels are circumferentially arrayed by taking the rotating axis of the rotating part as a center, the rollers in each group of conveying wheels are rotatably installed on the rotating part, and the rotating axes of the rollers in each group of conveying wheels and the rotating axis of the rotating part are located on different planes;

the rotating part is provided with a plurality of mounting rods which radially extend outwards by taking the rotating axis of the rotating part as a center, the mounting rods are positioned on the same plane, the mounting rods are circumferentially arrayed in an equiangular manner by taking the rotating axis of the rotating part as a center, and one roller is arranged between any two adjacent mounting rods; the rotating piece is an installation shaft sleeve, a plurality of insertion holes are arranged on the installation shaft sleeve, the insertion holes are arranged around the axis of the installation shaft sleeve at equal angular intervals, one end of the installation rod is inserted in the insertion holes, each mounting rod is in threaded connection with the corresponding jack, the other end of each mounting rod is provided with two support shafts extending in opposite directions, all the support shafts are positioned in the same plane, the roller is arranged on the two support shafts between the two adjacent mounting rods, each mounting rod and the two support shafts connected to the mounting rod are positioned on the same plane, the included angles between the two support shafts and the mounting rods are acute angles, and the included angle between the mounting rod and the support shaft connected to the mounting rod is complementary to half of the included angle between two adjacent mounting rods;

the roller wheels are connected with the corresponding support shafts through bearings, grooves are formed in the two sides of each roller wheel respectively, the bearings are arranged in the grooves, and outer rings of the bearings are in interference fit with the grooves; the roller is provided with a through hole extending along the rotation axis of the roller, the rotating rod is inserted in the through hole, two ends of the rotating rod are in interference fit with the inner ring of the bearing respectively, and two ends of the rotating rod are connected with the support shaft respectively;

all be provided with the connecting groove on the both ends terminal surface of dwang, the back shaft cartridge is in the connecting groove, the back shaft is the taper type, being close to of back shaft the diameter of the one end of installation pole is greater than keeping away from of back shaft the diameter of the one end of installation pole, what the connecting groove corresponds is the toper, the diameter of the tank bottom of connecting groove is less than the diameter of the opening part of connecting groove.

2. The transfer device of claim 1, wherein a central plane of each of the rollers and the axis of rotation of the rotating member are located on the same plane, the central plane of the roller is perpendicular to the axis of rotation of the roller and the roller is symmetrical about the central plane.

3. A transfer device as in claim 1 further comprising at least one drive shaft, each of said drive shafts having at least one of said mounting collars coaxially disposed thereon.

4. A conveyor as claimed in claim 1 or 2 wherein the rollers are of the spindle type.