CN215755201U

CN215755201U - Full-automatic sheet loading and unloading device for tempering furnace

Info

Publication number: CN215755201U
Application number: CN202121249080.6U
Authority: CN
Inventors: 刘晓强; 张鹏飞; 常欢
Original assignee: Shanxi Lvjian Zhizao Curtain Wall Technology Co ltd
Current assignee: Shanxi Lvjian Zhizao Curtain Wall Technology Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2022-02-08
Anticipated expiration: 2031-06-05

Abstract

The utility model relates to a full-automatic sheet loading and unloading device for a tempering furnace, which belongs to the technical field of glass conveying equipment and specifically comprises a roller conveying line arranged at the outlet end of the tempering furnace, wherein an automatic sheet lifting conveying mechanism is arranged on the roller conveying line, the height of the automatic sheet lifting conveying mechanism is lower than that of the roller conveying line, a sheet turning and dropping mechanism is arranged on one side of the automatic sheet conveying mechanism, the roller conveying line is used for conveying glass to the automatic sheet lifting conveying mechanism, the automatic sheet lifting conveying mechanism is used for conveying glass to the sheet turning and dropping mechanism, and the sheet turning and dropping mechanism is used for vertically placing the glass on a glass frame; the utility model has compact structure and small occupied space, and can greatly improve the feeding and discharging efficiency of the toughening furnace.

Description

Full-automatic sheet loading and unloading device for tempering furnace

Technical Field

The utility model relates to a full-automatic sheet loading and unloading device for a tempering furnace, and belongs to the technical field of glass conveying equipment.

Background

General tempering furnace unloading mechanism in market mainly constitutes and adopts the portal frame mode, and the mechanism form of the unloading of going up of this kind of portal frame mode is complicated, and it is great at the in-process vibrations of walking, and the tempering furnace area who adopts the unloading of portal frame mode to go up is big, and consequently this kind of defect has influenced the work efficiency of unloading mechanism on the tempering furnace, and is unfavorable for the laying of tempering furnace unloading mechanism.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides the full-automatic sheet loading and unloading device for the toughening furnace, which has a compact structure and small occupied space and can greatly improve the loading and unloading efficiency of the toughening furnace.

In order to achieve the purpose, the technical scheme adopted by the utility model is a full-automatic sheet loading and unloading device for a tempering furnace, which comprises a roller conveying line arranged at the outlet end of the tempering furnace, wherein an automatic sheet lifting conveying mechanism is arranged on the roller conveying line, the height of the automatic sheet lifting conveying mechanism is lower than that of the roller conveying line, a sheet turning and dropping mechanism is arranged on one side of the automatic sheet lifting conveying mechanism, the roller conveying line is used for conveying glass to the automatic sheet lifting conveying mechanism, the automatic sheet lifting conveying mechanism is used for conveying the glass to the sheet turning and dropping mechanism, and the sheet turning and dropping mechanism is used for vertically placing the glass on a glass frame;

the automatic lifting piece conveying mechanism mainly comprises lifting piece cross beams, lifting piece longitudinal beams and a height fine adjustment mechanism, wherein the lifting piece cross beams are arranged on a roller conveying line and are perpendicular to the conveying direction of the roller conveying line, first transmission wheels are respectively arranged at two ends of each lifting piece cross beam, a first conveying belt is arranged between the first transmission wheels, the first transmission wheels at one end of each lifting piece cross beam are connected through a first rotating shaft, a lifting piece moving driving mechanism is arranged on the first rotating shaft, the lifting piece longitudinal beams are arranged below two ends of each lifting piece cross beam and are connected through the height fine adjustment mechanism, the lifting piece longitudinal beams are supported on a frame body of the roller conveying line, a lifting piece control plate is arranged at the bottom of each lifting piece longitudinal beam, a second rotating shaft is further arranged on the frame body of the roller conveying line, and a first lifting piece connecting plate and a second lifting piece connecting plate are fixed on the second rotating shaft, the end part of the first piece lifting connecting plate is hinged to the bottom of the piece lifting control plate, the bottom part of the second piece lifting connecting plate is hinged to a piston rod of the piece lifting cylinder, and a cylinder body of the piece lifting cylinder is hinged to the roller conveying line.

Preferably, a synchronous control connecting rod is further installed between the second sheet lifting connecting plates, and two ends of the synchronous control connecting rod are respectively hinged to the second sheet lifting connecting plates at two ends of the sheet lifting cross beam.

Preferably, the sheet lifting and moving driving mechanism comprises a support arranged on the roller conveying line and a first driven sprocket arranged on a first rotating shaft, a first driving sprocket is arranged on the support, a sheet lifting and moving motor is arranged on a wheel shaft of the first driving sprocket, and the first driving sprocket is connected with the first driven sprocket in a chain mode.

Preferably, the sheet turning and dropping mechanism mainly comprises a fixed frame, a movable frame, sheet moving cross beams, sheet sucking longitudinal beams and sheet sucking lower cross beams, wherein the fixed frame is provided with a sliding guide rail in a sliding manner, two sides of the movable frame are provided with idler wheels used for being installed on the sliding guide rail, the movable frame is provided with a first sheet sucking movable motor, the movable frame is provided with the sheet moving cross beams through a plurality of height fine adjustment mechanisms, two ends of the sheet moving cross beams are respectively provided with a second driving wheel, a second conveying belt is installed between the second driving wheels, the second driving wheels at one end of the sheet moving cross beams are connected through a second rotating shaft, the second rotating shaft is provided with a sheet sucking movable driving mechanism, one end of the movable frame is hinged with the sheet sucking longitudinal beams, the sheet sucking longitudinal beams are provided with the plurality of sheet sucking lower cross beams, and the sheet sucking lower cross beams are arranged between the sheet moving cross beams, inhale the bottom of piece bottom end rail and install upset actuating mechanism, every it is connected with through two suction piece even boards and inhales the piece upper beam still to inhale on the piece bottom end rail, inhale the both ends of piece even board and articulate respectively on inhaling piece bottom end rail and inhaling the piece upper beam, inhale and install a plurality of sucking discs through a plurality of branches on the piece upper beam, the sucking disc highly be less than and move the piece crossbeam, one it installs in the pivot of piece even board and inhales piece lift actuating mechanism.

Preferably, the piece sucking moving driving mechanism comprises a chain wheel frame arranged at the bottom of the piece moving beam and a second driven chain wheel arranged on the second rotating shaft, a second driving chain wheel is arranged on the chain wheel frame, and a second piece sucking moving motor is arranged on a wheel shaft of the second driving chain wheel.

Preferably, the overturning driving mechanism comprises a third rotating shaft installed on the moving frame and a connecting plate hinged to the third rotating shaft and installed on the bottom of the suction piece lower cross beam in an overturning mode, the bottom of the connecting plate in the overturning mode is hinged to an overturning lower connecting plate, the end portion of the connecting plate in the overturning mode is fixed to the third rotating shaft, and an overturning motor is installed on the third rotating shaft.

Preferably, the suction piece lifting driving mechanism comprises a worm wheel arranged on the suction piece connecting plate rotating shaft and a lifting driving motor fixed at the bottom of the suction piece lower cross beam, a worm is arranged on an output shaft of the lifting driving motor, and the worm is meshed with the worm wheel.

Preferably, a protective cover is covered outside the lifting driving motor and fixed on the lower beam of the suction piece.

Preferably, the height fine adjustment mechanism comprises two support plates fixed on the piece lifting longitudinal beam/the moving frame, a support rubber wheel arranged between the support plates and control pin shafts arranged on two sides of the piece moving beam/the piece lifting beam, the two support plates are clamped on two sides of the piece moving beam/the piece lifting beam, the support rubber wheel is located at the bottom of the piece moving beam/the piece lifting beam, a first adjusting long hole and a second adjusting long hole are formed in the two support plates, the control pin shafts are arranged in the first adjusting long hole through nuts, and wheel shafts of the support rubber wheel are arranged in the second adjusting long hole through nuts.

Compared with the prior art, the utility model has the following technical effects: the glass sheet conveying device is simple in structure and convenient to use, the roller conveying line is arranged at the discharge end of the toughening furnace and used for conveying glass sheets to the automatic sheet lifting conveying mechanism, the automatic sheet lifting conveying mechanism can automatically lift and convey the glass sheets on the roller conveying line to the turnover driving mechanism, the turnover driving mechanism can move the glass sheets to a specified position, the glass sheets are sucked by the suckers and turned over by 90 degrees through the turnover mechanism, so that the glass sheets can stand on the glass sheet support, and otherwise, the feeding is carried out in the same way. The full-automatic glass sheet feeding and discharging device is simple in whole structure, convenient to use, compact in structure, small in occupied space, capable of achieving full-automatic feeding and discharging of glass sheets, and greatly improved in working efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a sheet turning and dropping mechanism in the utility model.

FIG. 3 is a schematic structural view of a lower beam and an upper beam of the suction sheet of the present invention.

Fig. 4 is a schematic structural diagram of the automatic sheet lifting and conveying mechanism of the utility model.

Fig. 5 is a schematic structural diagram of the height fine adjustment mechanism of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 and 4, the full-automatic sheet loading and unloading device for the tempering furnace comprises a roller conveying line 1 installed at the outlet end of the tempering furnace, wherein an automatic sheet lifting and conveying mechanism 2 is installed on the roller conveying line 1, the height of the automatic sheet lifting and conveying mechanism 2 is lower than that of the roller conveying line 1, a sheet turning and dropping mechanism 3 is installed on one side of the automatic sheet lifting and conveying mechanism 2, the roller conveying line 1 is used for conveying glass to the automatic sheet lifting and conveying mechanism 2, the automatic sheet lifting and conveying mechanism 2 is used for conveying glass to the sheet turning and dropping mechanism 3, and the sheet turning and dropping mechanism 3 is used for vertically placing the glass on a glass frame;

the automatic lifting piece conveying mechanism 2 mainly comprises a lifting piece cross beam 4, lifting piece longitudinal beams 5 and a height fine adjustment mechanism 6, wherein a plurality of lifting piece cross beams 4 are arranged on a roller conveying line 1, the lifting piece cross beams 4 are arranged perpendicular to the conveying direction of the roller conveying line 1, first driving wheels 7 are respectively arranged at two ends of each lifting piece cross beam 4, a first conveying belt 8 is arranged between the first driving wheels 7, a first driving wheel at one end of each lifting piece cross beam 4 is connected through a first rotating shaft 9, a lifting piece moving driving mechanism is arranged on each first rotating shaft 9, the lifting piece longitudinal beams 5 are arranged below two ends of each lifting piece cross beam 4, the lifting piece longitudinal beams 5 are connected with the lifting piece cross beams 4 through the height fine adjustment mechanism 6, the lifting piece longitudinal beams 5 are supported on a frame body of the roller conveying line 1, a lifting piece control plate 10 is arranged at the bottoms of the lifting piece longitudinal beams 5, and second rotating shafts 12 are further arranged on the frame body of the roller conveying line 1, a first piece lifting connecting plate 13 and a second piece lifting connecting plate 14 are fixed on the second rotating shaft 12, the end part of the first piece lifting connecting plate 13 is hinged to the bottom of the piece lifting control plate 10, the bottom of the second piece lifting connecting plate 14 is hinged to a piston rod of a piece lifting cylinder 15, and a cylinder body of the piece lifting cylinder 15 is hinged to the roller conveying line 1.

According to the utility model, the glass sheet from the toughening furnace is conveyed to the roller conveying line 1, and then the roller conveying line 1 drives the glass sheet to be conveyed to the position of the automatic sheet lifting conveying mechanism. At the moment, the piston rod of the piece lifting cylinder 15 extends out, the second piece lifting connecting plate 14 drives the second rotating shaft 12 to rotate, and further drives the first piece lifting connecting plate 13 to rotate, and the piece lifting cross beam 4 and the piece lifting longitudinal beam 5 are lifted. The glass sheet is lifted by the sheet lifting beam 4, the first conveyor belt 8 is driven to rotate by the sheet lifting movement driving mechanism, the glass sheet is driven to move, and the glass sheet is conveyed to the sheet turning and falling mechanism of the next procedure.

Wherein, a synchronous control connecting rod 16 is further installed between the second sheet lifting connecting plates 14, and two ends of the synchronous control connecting rod 16 are respectively hinged on the second sheet lifting connecting plates 16 at two ends of the sheet lifting beam 4. The synchronous control connecting rod can enable the two second sheet lifting connecting plates 14 and the sheet lifting air cylinders 15 to synchronously act, so that the sheet lifting cross beam 4 is horizontally lifted, and the glass sheets are prevented from sliding down due to the inclination of the sheet lifting cross beam 4. The sheet lifting moving driving mechanism comprises a support 17 arranged on the roller conveying line 1 and a first driven chain wheel 18 arranged on a first rotating shaft, a first driving chain wheel 19 is arranged on the support 17, a sheet lifting moving motor 20 is arranged on a wheel shaft of the first driving chain wheel 19, and the first driving chain wheel 19 is in chain connection with the first driven chain wheel 18. The piece lifting moving driving mechanism drives the chain wheel and the chain to rotate by utilizing the piece lifting moving motor, and further drives the first rotating shaft 9 to rotate, so that the first conveyor belt 8 rotates.

As shown in fig. 2 and 3, the sheet turning and dropping mechanism mainly comprises a fixed frame 21, a moving frame 22, a moving beam 23, a sheet-sucking longitudinal beam 24 and a sheet-sucking lower beam 25, wherein a sliding guide rail 26 is slidably mounted on the fixed frame 21, rollers 27 mounted on the sliding guide rail are mounted on two sides of the moving frame 22, a first sheet-sucking moving motor 28 for driving the rollers to rotate is mounted on the moving frame 22, the moving frame 22 is provided with the sheet-sucking beam 23 through a plurality of height fine-adjusting mechanisms 6, two ends of the moving beam 23 are respectively provided with a second driving wheel 29, a second conveying belt 30 is mounted between the second driving wheels 29, the second driving wheel at one end of the moving beam 23 is connected through a fourth rotating shaft 31, the sheet-sucking moving driving mechanism is mounted on the fourth rotating shaft 31, one end of the moving frame 22 is hinged with the sheet-sucking longitudinal beam 24, the sheet-sucking longitudinal beam 24 is provided with a plurality of sheet-sucking lower beams 25, inhale piece bottom end rail 25 and set up between moving piece crossbeam 23, inhale the bottom of piece bottom end rail 25 and install upset actuating mechanism, every inhales still to be connected with through two on the piece bottom end rail 25 and inhale piece crossbeam 33, inhale the both ends of piece even board 32 and articulate respectively on inhaling piece bottom end rail 25 and inhaling piece crossbeam 33, inhale and install a plurality of sucking discs 35 through a plurality of branches 34 on the piece crossbeam 33, sucking disc 35 highly is less than and moves piece crossbeam 23, it inhales piece lift actuating mechanism to install in the pivot of piece even board 32 to inhale.

The glass sheet conveyed from the previous process is conveyed to the sheet moving beam 23, the sheet suction movement driving mechanism drives the second conveyor belt 30 to rotate, so that the glass sheet is conveyed to a specified position, namely, right above the sheet suction upper beam 33, and then the conveying is stopped. At this time, the sheet-sucking lifting driving mechanism controls the sheet-sucking connecting plate 32 to rotate, so that the sheet-sucking upper beam 33 is lifted, the sucking disc is contacted with the glass sheet, and the sucking disc generates suction force through the vacuum mechanism and sucks the glass sheet. Then the first suction piece moving motor 28 drives the roller 27 to rotate, so that the moving frame 22 moves along the sliding guide rail 26, and simultaneously the overturning driving mechanism drives the suction piece upper cross beam 33, the suction piece lower cross beam 25 and the suction piece longitudinal beam 24 to overturn around the hinge point of the suction piece longitudinal beam 24, so that the suction piece upper cross beam 33 and the suction piece lower cross beam 25 overturn by 90 degrees. In the overturning process, the sheet suction lifting driving mechanism resets, so that the position can be adjusted better when the glass sheet is placed. After the overturning is completed, the suction sheet lifting driving mechanism continues to act, the suction sheet upper cross beam 33 is separated from the suction sheet lower cross beam 25, the glass sheet is pushed to the glass support, then the suction disc releases air, and the glass sheet is placed on the glass support to complete the whole action.

The sheet suction moving driving mechanism comprises a chain wheel frame 36 arranged at the bottom of the sheet moving beam and a second driven chain wheel 37 arranged on a fourth rotating shaft, a second driving chain wheel 38 is arranged on the chain wheel frame 36, a second sheet suction moving motor 39 is arranged on a wheel shaft of the second driving chain wheel 38, and the second driven chain wheel 37 is connected with the second driving chain wheel chain 38. The second suction piece moving motor 39 controls the second conveyor belt 30 to rotate through a chain wheel and a chain, and the transmission efficiency is high. The overturning driving mechanism comprises a third rotating shaft 40 arranged on the moving frame 22 and an overturning upper connecting plate 41 which is hinged to the bottom of the suction piece lower cross beam, the bottom of the overturning upper connecting plate 41 is hinged to an overturning lower connecting plate 42, the end part of the overturning lower connecting plate 42 is fixed on the third rotating shaft 40, and an overturning motor 43 is arranged on the third rotating shaft 40. The overturning driving mechanism utilizes the overturning upper connecting plate 41 and the overturning lower connecting plate 42 to control the suction piece lower beam 25, and the overturning motor 43 drives the overturning lower connecting plate 42 to rotate, so that the overturning upper connecting plate is pushed, and the overturning upper connecting plate pushes the suction piece lower beam 25 to realize overturning. The sheet-sucking lifting driving mechanism comprises a worm wheel 44 arranged on a rotating shaft of the sheet-sucking connecting plate and a lifting driving motor 45 fixed at the bottom of the lower beam of the sheet-sucking, wherein a worm 46 is arranged on an output shaft of the lifting driving motor 45, and the worm 46 is meshed with the worm wheel 45. The action between the upper suction cross beam 33 and the lower suction cross beam 25 is controlled by a worm gear mechanism and is controlled by a lifting driving motor.

In addition, the outside of the elevation driving motor 45 is covered with a shield 47, and the shield 47 is fixed to the suction sheet lower beam 25. The protective cover mainly plays a role in protection.

As shown in fig. 5, the height fine-adjustment mechanism 6 includes two support plates 48 fixed on the lift longitudinal beam/the moving frame, a support rubber wheel 49 installed between the support plates, and control pin shafts 50 installed on both sides of the lift cross beam/the lift cross beam, the two support plates 48 are clamped on both sides of the lift cross beam/the lift cross beam, the support rubber wheel 49 is located at the bottom of the lift cross beam/the lift cross beam, the two support plates 48 are provided with a first adjustment long hole 51 and a second adjustment long hole 52, the control pin shaft 50 is installed in the first adjustment long hole 51 through a nut, and the wheel shaft of the support rubber wheel 49 is installed in the second adjustment long hole 52 through a nut. The height fine-adjustment mechanism is mainly used for adjusting the height of the moving piece beam/lifting piece beam, and the height is adjusted through the positions of the control pin shafts on the two sides of the moving piece beam/lifting piece beam in the first adjusting long hole. The supporting rubber wheels 49 are used for supporting the sheet moving beam/sheet lifting beam, can achieve the purpose of buffering, and can also ensure that the position of the sheet moving beam/sheet lifting beam is firm.

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 utility model, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.

Claims

1. The utility model provides a full-automatic piece device about for tempering furnace, is including installing the gyro wheel transfer chain at tempering furnace exit end, its characterized in that: the automatic glass lifting and dropping device comprises a roller conveying line, an automatic glass lifting and conveying mechanism, a roller conveying line, a glass rack and a glass lifting and dropping mechanism, wherein the roller conveying line is provided with the automatic glass lifting and conveying mechanism, the automatic glass lifting and conveying mechanism is lower than the roller conveying line in height, one side of the automatic glass lifting and conveying mechanism is provided with the glass turning and dropping mechanism, the roller conveying line is used for conveying glass to the automatic glass lifting and conveying mechanism, the automatic glass lifting and conveying mechanism is used for conveying glass to the glass turning and dropping mechanism, and the glass turning and dropping mechanism is used for vertically placing glass on the glass rack;

2. The full-automatic loading and unloading device for the tempering furnace according to claim 1, wherein: and a synchronous control connecting rod is further installed between the second sheet lifting connecting plates, and two ends of the synchronous control connecting rod are respectively hinged to the second sheet lifting connecting plates at two ends of the sheet lifting cross beam.

3. The full-automatic loading and unloading device for the tempering furnace according to claim 1, wherein: the sheet lifting mobile driving mechanism comprises a support arranged on the roller conveying line and a first driven chain wheel arranged on a first rotating shaft, a first driving chain wheel is arranged on the support, a sheet lifting mobile motor is arranged on a wheel shaft of the first driving chain wheel, and the first driving chain wheel is connected with the first driven chain wheel through a chain.

4. The full-automatic loading and unloading device for the tempering furnace according to claim 1, wherein: the sheet turning and dropping mechanism mainly comprises a fixed frame, a movable frame, sheet moving cross beams, sheet sucking longitudinal beams and sheet sucking lower cross beams, wherein the fixed frame is provided with a sliding guide rail in a sliding manner, two sides of the movable frame are provided with idler wheels used for being arranged on the sliding guide rail, the movable frame is provided with a first sheet sucking movable motor, the movable frame is provided with the sheet moving cross beams through a plurality of height fine adjustment mechanisms, two ends of the sheet moving cross beams are respectively provided with a second driving wheel, a second conveying belt is arranged between the second driving wheels, the second driving wheels at one end of the sheet moving cross beams are connected through a fourth rotating shaft, the fourth rotating shaft is provided with a sheet sucking movable driving mechanism, one end of the movable frame is hinged with the sheet sucking longitudinal beams, the sheet sucking longitudinal beams are provided with the plurality of sheet sucking lower cross beams, and the sheet sucking lower cross beams are arranged between the sheet moving cross beams, inhale the bottom of piece bottom end rail and install upset actuating mechanism, every it is connected with through two suction piece even boards and inhales the piece upper beam still to inhale on the piece bottom end rail, inhale the both ends of piece even board and articulate respectively on inhaling piece bottom end rail and inhaling the piece upper beam, inhale and install a plurality of sucking discs through a plurality of branches on the piece upper beam, the sucking disc highly be less than and move the piece crossbeam, one it installs in the pivot of piece even board and inhales piece lift actuating mechanism.

5. The full-automatic loading and unloading device for the tempering furnace according to claim 4, wherein: the piece sucking moving driving mechanism comprises a chain wheel frame arranged at the bottom of the piece moving beam and a second driven chain wheel arranged on a fourth rotating shaft, a second driving chain wheel is arranged on the chain wheel frame, a second piece sucking moving motor is arranged on a wheel shaft of the second driving chain wheel, and the second driven chain wheel is connected with the second driving chain wheel through a chain.

6. The full-automatic loading and unloading device for the tempering furnace according to claim 4, wherein: the overturning driving mechanism comprises a third rotating shaft and a connecting plate, wherein the third rotating shaft is installed on the moving frame, the third rotating shaft is hinged to the upper portion of the bottom of the lower beam of the suction piece, the bottom of the connecting plate is hinged to an overturning lower connecting plate, the end portion of the connecting plate is fixed to the third rotating shaft under the overturning, and an overturning motor is installed on the third rotating shaft.

7. The full-automatic loading and unloading device for the tempering furnace according to claim 4, wherein: the suction piece lifting driving mechanism comprises a worm wheel arranged on the suction piece connecting plate rotating shaft and a lifting driving motor fixed at the bottom of the suction piece lower cross beam, a worm is arranged on an output shaft of the lifting driving motor, and the worm is meshed with the worm wheel.

8. The full-automatic loading and unloading device for the tempering furnace according to claim 7, wherein: the outer part of the lifting driving motor is covered with a protective cover, and the protective cover is fixed on the lower cross beam of the suction piece.

9. The full-automatic loading and unloading device for the tempering furnace according to claim 1 or 4, wherein: the height fine adjustment mechanism comprises two supporting plates fixed on the piece lifting longitudinal beam/moving frame, supporting rubber wheels arranged between the supporting plates and control pin shafts arranged on two sides of the piece moving beam/piece lifting beam, the two supporting plates are clamped on two sides of the piece moving beam/piece lifting beam, the supporting rubber wheels are located at the bottom of the piece moving beam/piece lifting beam, first adjusting long holes and second adjusting long holes are formed in the two supporting plates, the control pin shafts are arranged in the first adjusting long holes through nuts, and wheel shafts of the supporting rubber wheels are arranged in the second adjusting long holes through nuts.