CN214718459U - Balance wheel sorting machine - Google Patents

Abstract

The utility model provides a balance sorting machine, belong to letter sorting equipment technical field, which comprises a bod, a plurality of balance units are installed at the top of organism, the balance unit includes the main part support, middle cylinder and work cylinder, the upper end of main part support exposes in the outside of organism and is equipped with installation department and clamping part, the installation department is used for installing the work cylinder and is equipped with the first rectilinear groove that the opening faces upward, clamping part is equipped with the second rectilinear groove that the opening faces downward and upper and lower position is adjustable, the center pivot of work cylinder passes first rectilinear groove and second rectilinear groove simultaneously, center pivot and the bottom of first rectilinear groove have the clearance and are compressed tightly downwards by the top of second rectilinear groove, thereby make the work cylinder compress tightly middle cylinder under the drive of center pivot; the utility model provides a balance sorting machine can solve current balance sorting machine, in order to eliminate the clearance of work cylinder and middle cylinder, needs the complete machine to dismantle, and work load is big, the technical problem of inefficiency.

Description

Balance wheel sorting machine

Technical Field

The utility model belongs to the technical field of letter sorting equipment, more specifically say, relate to a balance sorting machine.

Background

Sorting equipment is an important equipment in the field of logistics, and a balance wheel sorting machine is one of the equipment. The balance wheel sorting machine can be arranged at the intersection of the paths of the conveying lines, and the change of the flow direction of the articles is realized through the swing of the balance wheel. The balance wheel can adopt a three-level roller structure comprising a driving roller, a middle roller and a working roller, the three-level rollers are in rolling contact in sequence, the driving roller is positioned at the bottom and is responsible for providing driving force, the middle roller is positioned at the middle and is responsible for transmitting power, and the working roller is positioned at the upper part and is in contact with the sorted objects to drive the sorted objects to move. Along with the aggravation of degree of wear in the use, the clearance grow between work cylinder and the middle cylinder, frictional force diminishes, leads to middle cylinder can't effectively transmit drive power for work cylinder, influences the normal work of sorting machine. The problem can be solved by adjusting the position of the middle roller or the working roller to eliminate the gap. But this needs to implement whole dismantlement to the sorting machine, and work load is big, and is inefficient, and the transfer chain is shut down, seriously influences the conveying efficiency of commodity circulation parcel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a balance sorting machine aims at solving current balance sorting machine, in order to eliminate the clearance of working drum and middle cylinder, needs the complete machine to dismantle, and work load is big, the technical problem of inefficiency.

In order to achieve the above object, the utility model adopts the following technical scheme: the balance wheel sorting machine comprises a machine body, wherein a plurality of balance wheel units capable of synchronously rotating are mounted at the top of the machine body and are distributed in a staggered array in the horizontal direction;

the mounting part is used for mounting the working roller and is provided with a first straight line groove with an upward opening;

the pressing part is provided with a second linear groove with a downward opening, and the upper position and the lower position of the pressing part are adjustable;

the center rotating shaft of the working roller penetrates through the first linear groove and the second linear groove at the same time, a gap is formed between the center rotating shaft and the bottom end of the first linear groove, and the center rotating shaft is pressed downwards by the top end of the second linear groove, so that the working roller is driven by the center rotating shaft to press the middle roller.

Furthermore, the top end of the main body support is provided with a unit cover plate, the unit cover plate is adjustable in vertical position and horizontally arranged, and the pressing part is arranged on the unit cover plate.

Furthermore, a vertical connecting column is arranged on the main body bracket, the upper end of the connecting column is connected with the unit cover plate through a compression screw, the compression screw penetrates through the unit cover plate downwards and is screwed into the connecting column, and the head of the compression screw compresses the unit cover plate.

Furthermore, the top end of the machine body is provided with a whole machine cover plate, the whole machine cover plate is provided with assembling holes which correspond to the balance wheel units one to one, the assembling holes are matched with the unit cover plate in shape, and the hole walls of the assembling holes provide guidance for the up-and-down movement of the unit cover plate.

Further, the balance wheel unit further comprises a driving roller, the driving roller is mounted on the main body support through an adjusting support, the adjusting support is adjustable in vertical position relative to the main body support, and the driving roller is adjusted in position through the adjusting support and presses the middle roller.

Furthermore, a guide post perpendicular to the central rotating shaft is arranged on the main body support, the adjusting support is connected with the guide post in a sliding mode, the adjusting support is connected with an elastic element, and the elastic element drives the adjusting support to slide along the guide post, so that the driving roller is driven to compress the middle roller.

Furthermore, the elastic element is a spring sleeved on the guide post, an adjusting part capable of moving along the axial direction is arranged on the guide post, and the spring is extruded and arranged between the adjusting part and the adjusting support.

Further, the adjusting part is an adjusting nut sleeved on the guide post, and the guide post is provided with an external thread matched with the adjusting nut.

Furthermore, two centering rollers which are in rolling contact with the driving roller are arranged on the adjusting bracket, the centering rollers are parallel to the driving roller and are positioned below the driving roller, and the centering rollers and the driving roller are distributed in an isosceles triangle shape when viewed from the axial direction.

Further, the number of the working rollers is five, and four of the working rollers are connected with the middle roller and can rotate under the driving of the middle roller.

The utility model provides a balance sorting machine, compared with the prior art, beneficial effect lies in, balance unit's main part support upper end is equipped with the regulation structure who comprises installation department and clamping part, and the central pivot of work cylinder is located the installation spacing groove that forms at first rectilinear groove and second rectilinear groove lock mutually from top to bottom, when work cylinder and middle cylinder appear the clearance in the use because of wearing and tearing, can adjust the position of clamping part downwards, with the top of second rectilinear groove with the central pivot to pushing down, drive work cylinder downstream, eliminate the clearance, continue to compress tightly middle cylinder; the installation department all sets up in the upper end of main part support with the portion that compresses tightly, exposes in the outside of organism, and the position adjustment of the portion that compresses tightly need not dismantle the complete machine and can realize to it is big to avoid appearing dismantling the complete machine work load, the inefficiency problem.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described 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 without creative efforts.

Fig. 1 is a schematic structural diagram of a balance wheel sorting machine according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a balance sorting machine according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial structure in a balance wheel sorting machine according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a balance wheel unit in a balance wheel sorting machine according to an embodiment of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

fig. 6 is a schematic structural diagram of a balance wheel unit in the balance wheel sorting machine according to the embodiment of the present invention;

fig. 7 is a schematic diagram of an explosion structure of a balance wheel unit in the balance wheel sorting machine according to the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a main bracket of a balance wheel unit in the balance wheel sorting machine according to the embodiment of the present invention;

fig. 9 is a schematic structural diagram of a unit cover plate of a balance wheel unit in the balance wheel sorting machine according to the embodiment of the present invention;

fig. 10 is a schematic side view of a balance wheel unit in a balance wheel sorter according to an embodiment of the present invention.

In the figure: 11. a body; 111. a frame; 112. protecting the side plate; 113. an electrical installation box; 114. the ground feet can be adjusted; 12. a middle drum; 13. a working drum; 131. a central rotating shaft; 14. mounting a plate; 15. a bearing assembly; 16. a linkage; 17. a servo motor; 18. a complete machine cover plate; 19. a drive roller; 2. a balance wheel unit; 21. a connecting shaft; 211. a connecting plate; 3. a main body support; 31. an installation part; 311. a first straight line groove; 32. a pressing part; 321. a second linear groove; 33. a unit cover plate; 331. slotting in a rectangular shape; 332. a countersunk hole; 34. connecting columns; 35. a compression screw; 36. a guide post; 361. adjusting parts; 4. adjusting the bracket; 41. an elastic element; 42. the cylinder is centered.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 6 to 10 together, a balance sorter according to the present invention will now be described. The balance wheel sorting machine comprises a machine body 11, wherein a plurality of balance wheel units 2 capable of synchronously rotating are mounted at the top of the machine body 11, the balance wheel units 2 are distributed in a staggered array in the horizontal direction, each balance wheel unit 2 comprises a main body support 3, a middle roller 12 and a working roller 13, the middle roller 12 and the working roller 13 are mounted on the main body support 3, the upper end of the main body support 3 is exposed outside the machine body 11 and is provided with a mounting portion 31 and a pressing portion 32, the mounting portion 31 is used for mounting the working roller 13 and is provided with a first linear groove 311 with an upward opening, and the pressing portion 32 is provided with a second linear groove 321 with a downward opening and is adjustable in vertical position; and the central rotating shaft 131 of the working drum 13 simultaneously passes through the first linear groove 311 and the second linear groove 321, the central rotating shaft 131 has a gap with the bottom end of the first linear groove 311 and is pressed downwards by the top end of the second linear groove 321, so that the working drum 13 is driven by the central rotating shaft 131 to press the intermediate drum 12.

The utility model provides a balance sorting machine, compared with the prior art, beneficial effect lies in, balance unit 2's main part support 3 upper end is equipped with the regulation structure who comprises installation department 31 and portion 32 that compresses tightly, and the central pivot 131 of work cylinder 13 is located the installation spacing groove that buckles mutually from top to bottom at first rectilinear groove 311 and second rectilinear groove 321, when work cylinder 13 and intermediate roll 12 appear the clearance in the use because wearing and tearing, can adjust the position of portion 32 that compresses tightly downwards, with the top of second rectilinear groove 321 with central pivot 131 pushing down, drive work cylinder 13 and move downwards, eliminate the clearance, continue to compress tightly intermediate roll 12; the installation part 31 and the pressing part 32 are both arranged at the upper end of the main body bracket 3 and exposed outside the machine body 11, and the position adjustment of the pressing part 32 can be realized without disassembling the whole machine, so that the problems of large workload and low efficiency of disassembling the whole machine are avoided.

In fig. 8 and 9, the first linear groove 311 and the second linear groove 321 are both U-shaped grooves (the linear grooves can be regarded as a part of the U-shaped grooves), and have the same shape, and the bottom end of the groove is arc-shaped and is adapted to the shape of the central rotating shaft 131, and the other end is open and is communicated with the outside. In the working state, the first linear slot 311 has an upward opening, the bottom end is an arc end, the second linear slot 321 has a downward opening, and the top end is an arc end.

Specifically, as shown in fig. 2, the machine body 11 includes a frame 111, four protection side plates 112, an electrical installation box 113, and adjustable feet 114. The frame 111 constitutes supporting framework, and the protection curb plate 112 surrounds frame 111, plays the guard action to inside parts, and electric installation box 113 can install electric parts such as servo motor 17's driver, and adjustable lower margin 114 can adjust the height and the levelness of sorting machine, makes it match with the commodity circulation transfer chain.

Specifically, as shown in fig. 2 to 4, the balance wheel unit 2 is fixedly mounted through a mounting plate 14, and the mounting plate 14 is fixedly mounted on the frame 111. The mounting plate 14 is provided with a bearing assembly 15, the balance wheel unit 2 is connected with the mounting plate 14 through the bearing assembly 15, and the balance wheel unit 2 rotates, so that the angle is changed, and sorting is realized. The balance unit 2 is provided at a lower end thereof with a connecting shaft 21 connected to the bearing assembly 15, and the connecting shaft 21 is provided at a lower end thereof with a horizontally projecting connecting plate 211. The connecting plate 211 is connected with the linkage 16, and the linkage 16 rotates in a horizontal plane under the driving of the servo motor 17, so that the connecting plate 211 is driven to rotate, and the rotation of the balance wheel unit 2 is realized. In fig. 1 to 3, the number of the servo motors 17 is two, and the number of the link groups 16 is also two, and one servo motor 17 is connected to each of the two. One of the linkages 16 drives the three-row balance unit 2, and the other linkage 16 drives the two-row balance unit 2.

As a specific embodiment of the balance sorting machine of the present invention, please refer to fig. 6, 7 and 9, a unit cover plate 33 is disposed on the top end of the main body support 3, the unit cover plate 33 is horizontally disposed and vertically adjustable, and the pressing portion 32 is disposed on the unit cover plate 33.

The unit cover plate 33 is of an existing structure, the pressing portion 32 arranged on the unit cover plate 33 is an improvement of the prior art, the improvement structure is not changed greatly, too much improvement cost cannot be generated, but the purpose of the invention can be achieved by matching with the mounting portion 31, and a good effect is achieved.

Specifically, the number of the working rollers 13 is generally plural, and the working rollers 13 are different in length, and each of the working rollers 13 is correspondingly provided with a pair of mounting portions 31 respectively corresponding to two ends of the central rotating shaft 131. The mounting portion 31 projects outward of the main body frame 3 and has different projecting lengths matching the lengths of the respective work rolls 13, as shown in fig. 8 and 9. The pressing portions 32 are provided in one-to-one correspondence with the mounting portions 31. In the operating state, the mounting portion 31 and the pressing portion 32 are distributed in a staggered manner in the axial direction of the central rotating shaft 131 so that the mounting portion and the pressing portion can move up and down relatively to adjust the position of the central rotating shaft 131.

As a specific embodiment of the balance sorting machine provided by the present invention, please refer to fig. 4, 6 and 7, a vertical connecting column 34 is provided on the main body support 3, the upper end of the connecting column 34 is connected to the unit cover plate 33 through a compression screw 35, the compression screw 35 downwardly passes through the unit cover plate 33 and is screwed into the connecting column 34, and the head of the compression screw 35 compresses the unit cover plate 33.

The compression screw 35 is screwed coaxially into the connecting post 34 and the head compresses the unit cover plate 33. After a gap occurs between the working roller 13 and the intermediate roller 12, the pressing screw 35 is screwed to move downward, and the head of the pressing screw 35 presses the unit cover plate 33 downward to drive the pressing part 32 to move downward, so that the working roller 13 moves downward to eliminate the gap.

Specifically, the unit cover plate 33 is provided with a countersunk hole 332 through which the compression screw 35 passes. The lower end of the connecting column 34 can be fixedly connected with the bottom plate of the main body bracket 3 and can also be detachably connected through a compression screw 35.

As a specific implementation manner of the balance sorting machine provided by the present invention, please refer to fig. 1 to 4, the top end of the machine body 11 is provided with the complete machine cover plate 18, the complete machine cover plate 18 is provided with the assembling holes corresponding to the balance units 2 one-to-one, the assembling holes are adapted to the shape of the unit cover plate 33, and the hole walls of the assembling holes provide a guide for the up-and-down movement of the unit cover plate 33.

As can be seen from fig. 4, the thicknesses of the whole cover plate 18 and the unit cover plate 33 are not large, and the guiding effect provided by the whole cover plate 18 seems to be limited. However, the gap between the intermediate roller 12 and the working roller 13 is also small, and the distance that the unit cover 33 needs to move when adjusted downward is not large, so that the guide distance provided by the thickness of the whole cover 18 is sufficient. If the gap is too large, the gap is generally maintained by replacing the middle roller 12 or the working roller 13, and a means for adjusting the distance between the two and eliminating the gap is not adopted.

As can be seen from fig. 1 and 4, in the use state, the whole cover plate 18 and the unit cover plate 33 almost form a whole cover plate, and other parts are covered below. The pressing screw 35 is exposed above, so that the screwing is very convenient, and the downward adjustment of the working roller 13 can be realized without disassembling any other parts, so as to press the middle roller 12.

Specifically, the unit cover 33 is provided with a rectangular slot 331 for exposing the working roller 13. The rectangular slots 331 are arranged in one-to-one correspondence with the working rollers 13, and the pressing portions 32 are fixedly arranged at both ends of the rectangular slots 331. In order to improve the stability of the transmission of the working roller 13, knurling may be provided on the surface thereof to increase the friction with the intermediate roller 12 and the sorted articles.

The upper portion of the working drum 13 is exposed from the rectangular slot 331 above the unit cover 33 so as to be able to contact and support the sorted articles. The height of the working cylinder 13 exposed from the upper surface of the unit cover 33 is less than one third of its diameter. The clearance between the working roller 13 and the edge of the rectangular slot 331 is very small, so that small goods or woven goods are prevented from being clamped, and the safety and smoothness of the sorting process are ensured.

As a specific embodiment of the balance sorting machine provided in the present invention, please refer to fig. 4, fig. 6 and fig. 7, the balance unit 2 further includes a driving roller 19, the driving roller 19 is mounted on the main body support 3 through the adjusting bracket 4, the adjusting bracket 4 is adjustable in the vertical position relative to the main body support 3, and the driving roller 19 is adjusted in the vertical position and compresses the middle roller 12 by the adjusting bracket 4.

The distance between the driving roller 19 and the intermediate roller 12 can be adjusted by adjusting the bracket 4, and the gap can be eliminated. By matching with the distance adjustment between the working roller 13 and the middle roller 12 provided by the embodiment, three-level roller transmission is better realized, and the balance wheel unit 2 is ensured to work stably and reliably.

The driving roller 19 is generally realized by a motor roller in the logistics sorting industry. The motorized pulley is the prior art, including the steel cylindrical sealed outer casing, motor and central shaft integrated in this outer casing, the central shaft crosses the outer casing and stretches out from both sides, can with adjust the support 4 fixed connection; the shell is connected with the central shaft through a precision bearing and can rotate around the central shaft; the stator and the rotor of the motor are respectively connected with the central shaft and the shell, the shell can be driven to rotate around the central shaft after being electrified, and a cable of the motor extends out of the end part of the central shaft and is connected with an external power supply and a driving device to provide power supply and control signals for the motor; in order to increase the friction, the housing of the housing is typically provided with an encapsulation. Specifically, the electric roller can be a product of Dalianmo technology, Inc., the diameter of the shell coating is 70mm, the axial length of the shell is 73mm, and the motor is connected with a direct current 48V power supply and can generate 2 N.m torque with the rotating speed of 350-700 rpm. The electric roller has the advantages of high transmission efficiency, low noise, stable operation, reliable work, small occupied space, long service life and the like.

In fig. 4, 6 and 10, balance unit 2 is in an operating state in which driving roller 19 is at the bottom, working rollers 13 are at the top, and intermediate rollers 12 are between them, and one intermediate roller 12 simultaneously makes rolling contact with driving roller 19 and both working rollers 13 to transmit the driving force of driving roller 19 to working rollers 13; the axes of the working rollers 13 are in the same plane and have the same diameter, forming an upward support plane for the passage of the items to be sorted. Specifically, the axis position of the intermediate drum 12 is fixed.

The purpose of fig. 10 is to illustrate a state in which the central rotary shaft 131 is pressed downward by the pressing portion 32 while the working cylinder 13 is lifted upward by the intermediate cylinder 12, and the working cylinder 13 is clamped between the pressing portion 32 and the intermediate cylinder 12.

As a specific embodiment of the balance sorting machine provided in the present invention, please refer to fig. 4 and 5, a guide post 36 perpendicular to the central rotating shaft 131 is disposed on the main body support 3, the adjusting support 4 is slidably connected to the guide post 36, the adjusting support 4 is connected to the elastic element 41, and the elastic element 41 drives the adjusting support 4 to slide along the guide post 36, so as to drive the driving roller 19 to compress the middle roller 12.

Specifically, the main body support 3 and the adjusting support 4 are both of a U-shaped structure with an upward opening, and each of the U-shaped structure and the adjusting support comprises a bottom plate and two side plates. The adjusting bracket 4 is located inside the main body bracket 3, and the number of the guide posts 36 is four, and the guide posts are vertically and fixedly arranged on the bottom plate of the main body bracket 3 and are connected with the bottom plate of the adjusting bracket 4 in a sliding manner. The guide posts 36 are connected to the adjustment bracket 4 near the four corners of the base plate.

The elastic element 41 may be a gas spring. By means of the elastic element 41, the drive roller 19 can be pressed against the intermediate roller 12 at all times. Even if abrasion occurs, the elastic element 41 can spontaneously drive the adjusting bracket 4 to slide along the guide post 36, so as to fill the abrasion, and the driving roller 19 is always close to the middle roller 12 to keep proper extrusion force and friction force. The balance wheel unit 2 provided with the elastic element 41 greatly reduces noise in the use process, and greatly optimizes user experience.

When the balance wheel unit 2 encounters large impact, the elastic element 41 can also play a role in buffering, so that the balance wheel unit runs more stably, the motor of the driving roller 19 can be protected from being burnt due to excessive instantaneous current, and the service life of the driving roller 19 is prolonged.

The guide post 36 is perpendicular to the central rotating shaft 131, the central rotating shaft 131 is coaxial with the working drum 13, and the working drum 13, the intermediate drum 12 and the driving drum 19 are parallel, so that the guide post 36 is in a perpendicular relationship with the axes of the driving drum 19 and the intermediate drum 12.

Specifically, the adjusting bracket 4 is provided with a connecting hole adapted to the guide post 36, after the assembly is completed, the guide post 36 passes through the connecting hole, the adjusting bracket 4 including the driving roller 19 is integrally supported by the elastic element 41 at the lower part, the driving roller 19 at the upper part is contacted with the middle roller 12 and cannot be randomly moved upwards by the limit of the upper driving roller 19, and the adjusting bracket 4 cannot be separated from the upper end of the guide post 36 even if the upper end of the guide post 36 is not provided with a limit structure.

As a specific embodiment of the balance sorting machine of the present invention, please refer to fig. 5, the elastic element 41 is a spring sleeved on the guiding post 36, the guiding post 36 is provided with an adjusting part 361 capable of moving along the axial direction, and the spring is extruded between the adjusting part 361 and the adjusting bracket 4.

The adjustment part 361 can adjust the compression amount of the spring, thereby adjusting the elastic force and ensuring that the pressing force of the driving roller 19 on the intermediate roller 12 is proper. In particular, after wear occurs, the spring is stretched, the amount of compression is reduced, and the spring force is reduced. At this time, the axial position of the adjusting member 361 along the guide post 36 can be adjusted to shorten the distance from the adjusting bracket 4, thereby restoring the compression amount of the spring.

As a specific embodiment of the balance sorting machine of the present invention, please refer to fig. 5, the adjusting part 361 is an adjusting nut sleeved on the guiding post 36, and the guiding post 36 is provided with an external thread adapted to the adjusting nut. Specifically, the adjusting nut is disposed at the bottom of the guide post 36. The adjusting nut is rotated to move along the axial direction of the guide post 36, so that the compression amount of the spring is adjusted.

As a specific embodiment of the balance sorting machine provided in the present invention, please refer to fig. 4 and 7, two centering rollers 42 in rolling contact with the driving roller 19 are disposed on the adjusting bracket 4, the centering rollers 42 are parallel to the driving roller 19 and are located below the driving roller 19, and when viewed from the axial direction, the centering rollers 42 and the driving roller 19 are distributed in an isosceles triangle.

Viewed axially, the axis is a point, and the line connecting the point representing the axis of the drive roller 19 and the two points representing the axes of the centering rollers 42 is an isosceles triangle. The excircle of centering roller 42 and the excircle tangent line of driving roller 19 form a V-shaped self-centering stable structure, and driving roller 19 can run more stably. The centering roller 42 is mounted on the side plate of the adjusting bracket 4, and the axis position is fixed.

As a specific embodiment of the balance sorting machine provided in the present invention, please refer to fig. 6, the number of the working rollers 13 is five, and four of the working rollers 13 are connected to the middle roller 12 and can be driven by the middle roller 12 to rotate. The four working rollers 13 can drive the sorted objects to move, and the middle working roller 13 only plays a supporting role and has no power.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The balance wheel sorting machine comprises a machine body, wherein a plurality of balance wheel units capable of synchronously rotating are mounted at the top of the machine body, the balance wheel units are distributed in a staggered array in the horizontal direction, each balance wheel unit comprises a main body support, and a middle roller and a working roller which are mounted on the main body support, and the balance wheel sorting machine is characterized in that the upper end of the main body support is exposed outside the machine body and is provided with:

the mounting part is used for mounting the working roller and is provided with a first straight line groove with an upward opening;

the pressing part is provided with a second linear groove with a downward opening, and the upper and lower positions of the pressing part are adjustable;

and the central rotating shaft of the working roller simultaneously penetrates through the first linear groove and the second linear groove, a gap is formed between the central rotating shaft and the bottom end of the first linear groove, and the central rotating shaft is pressed downwards by the top end of the second linear groove, so that the working roller is driven by the central rotating shaft to press the middle roller.

2. The balance sorter of claim 1 wherein the top of the body frame has a cell cover, the cell cover being adjustable in vertical position and horizontally disposed, the clamping portion being disposed on the cell cover.

3. The balance sorter of claim 2 wherein the body frame has vertical attachment posts, the upper ends of the attachment posts are connected to the cell covers by compression screws, the compression screws pass downwardly through the cell covers and are screwed into the attachment posts, and the heads of the compression screws compress the cell covers.

4. The balance wheel sorting machine according to claim 3, wherein a whole machine cover plate is arranged at the top end of the machine body, assembling holes corresponding to the balance wheel units in a one-to-one mode are formed in the whole machine cover plate, the assembling holes are matched with the unit cover plates in shape, and hole walls of the assembling holes provide guiding for up and down movement of the unit cover plates.

5. The balance sorter of claim 1 wherein the balance unit further includes a drive roller mounted to the body mount by an adjustment mount, the adjustment mount being adjustable in up and down position relative to the body mount, the drive roller being adjusted in position by the adjustment mount and pressing against the intermediate roller.

6. The balance sorter of claim 5 wherein said main body frame has a guide post perpendicular to said central axis of rotation, said adjustment frame is slidably coupled to said guide post, said adjustment frame is coupled to a resilient member, said resilient member drives said adjustment frame to slide along said guide post, thereby causing said drive roller to compress said intermediate roller.

7. The balance sorter of claim 6 wherein the resilient member is a spring that is received over the guide post, the guide post having an axially movable adjustment feature thereon, the spring being compressed between the adjustment feature and the adjustment bracket.

8. The balance sorter of claim 7 wherein the adjustment feature is an adjustment nut that is received on the guide post, the guide post having an external thread that mates with the adjustment nut.

9. The balance sorter of claim 8 wherein the adjustment cradle has two centering rollers in rolling contact with the drive roller, the centering rollers being parallel to and below the drive roller, the centering rollers and the drive roller being distributed in an isosceles triangle when viewed axially.

10. The balance sorter of claim 5 wherein the number of working rollers is five, four of the working rollers being connected to the intermediate roller and being capable of being driven to rotate by the intermediate roller.

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