Ring-shaped part dispensing and pressing device and assembly method

Abstract

The present invention provides a ring-shaped part dispensing and pressing device and an assembly method. The ring-shaped part dispensing and pressing device includes a controller, a feeder and an assembly table. A vibration plate, a dispensing device and a pressing device are arranged on the assembly table. A feeding robot is connected between the feeder and the pressing device. An assembly robot is connected between the vibration plate and the dispensing device. The pressing device includes a workpiece sleeve, which is connected by a rotator drive. A positioning head is inserted into the workpiece sleeve. The positioning head is connected by a lower lifter drive. A pressure head is arranged above the positioning head, which is connected by an upper lifter drive. According to the product process and product shape characteristics, the present invention designs a corresponding sleeve structure and matches the opening of a pressing avoidance port to form a special structure, so as to realize the assembly of circumferential accessories of special products. A lifting method is adopted to switch the positioning pressing or releasing, and a rotation method is adopted to adjust the installation position. The two actions are reasonably arranged, and assembly is realized through orderly control, thereby improving assembly accuracy and work efficiency.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to an assembly system, in particular to an annular part dispensing and pressing device and an assembly method. Background Art

[0002] Existing electronic products need to be installed together with accessories. Before installation, glue and catalyst need to be applied between the product and accessories before they are installed together for pressing. However, due to the unique structures of the product and accessories, different pressing assembly structures and pressing assembly processes need to be set up for different product shapes.

[0003] For example, a Chinese patent document once disclosed a ball bulb automatic dispensing cover assembly machine [Chinese Patent No.: 201821834847.X]. The utility model relates to a ball bulb automatic dispensing cover assembly machine, including a body, a turntable, a feeding structure, a driving mechanism, a pressure plate assembly, a dispensing assembly, a touch panel, a cover pressing mechanism, a vibration plate, a marking mechanism and a base assembly. The turntable is arranged parallel to the upper surface of the body and is connected to the body itself through the driving mechanism. The feeding structure, the pressure plate assembly, the dispensing assembly, the cover pressing mechanism and the marking mechanism are respectively arranged along the circumference of the turntable in sequence. The vibration plate, the feeding structure, the pressure plate assembly, the dispensing assembly, the cover pressing mechanism, the driving mechanism and the marking mechanism are respectively electrically connected to the touch panel. The utility model provides a bulb automatic glue dispensing cover assembly machine, which adds a marking mechanism to the bulb automatic glue dispensing cover assembly machine, thereby completing the process of marking the bulb outer wall while assembling the bulb, thereby improving the production efficiency of the bulb and reducing the production cost.

[0004] The above technical features are for assembling the lamp holder and the circuit board, specifically for the pressing operation of a single plane, so it cannot realize the arc multi-point installation operation on the annular product, which has limitations. The above technical features use a disc to realize the cyclic transportation of multiple stations, but it is difficult to accurately position each station, which easily leads to deviations in the stop position of the disc during rotation, affecting the accuracy of subsequent processing, so it is necessary to add a positioning structure, resulting in increased equipment costs. In addition, the overall equipment occupies a large area, and the compactness between stations is poor, resulting in reduced work efficiency. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a ring-shaped product dispensing and pressing device and assembly method that can perform socket positioning on the ring-shaped product and combine lifting and pressing with rotation and displacement to sequentially complete arc track multi-point assembly.

[0006] The objectives of the present invention can be achieved through the following technical solutions: a ring-shaped part dispensing and pressing equipment, comprising a controller, a feeder and an assembly table, a vibration plate, a dispensing device and a pressing device are arranged on the assembly table, a loading robot is connected between the feeder and the pressing device, an assembly robot is connected between the vibration plate and the dispensing device, the pressing device comprises a workpiece sleeve, the workpiece sleeve is driven and connected by a rotator, a positioning head is inserted into the workpiece sleeve, the positioning head is driven and connected by a lower lifter, a pressure head is arranged opposite to the positioning head above the positioning head, and the pressure head is driven and connected by an upper lifter; the controller is electrically connected to the feeder, the loading robot, the vibration plate, the assembly robot, the dispensing device, the rotator, the lower lifter and the upper lifter.

[0007] In the above-mentioned annular part dispensing and pressing equipment, one end of the workpiece sleeve is a ring edge, and at least two assembly notches are recessed on the ring edge; the positioning head includes a positioning rod extending parallel to the workpiece sleeve, and a positioning pin is vertically arranged at the end of the positioning rod, and the positioning pin extends into the assembly notch.

[0008] In the above-mentioned annular part dispensing and pressing equipment, the pressing device includes a mounting seat, the rotator is fixedly mounted on the mounting seat, the rotator is connected to the workpiece sleeve through a geared disc transmission assembly, a connecting hole connected to the working sleeve is provided on the mounting seat, the lifting end of the lower lifter is fixedly connected to the positioning rod, and the positioning rod extends into the workpiece sleeve through the connecting hole.

[0009] In the above-mentioned annular part dispensing and pressing equipment, the pressing device also includes a vertical plate, a strip groove is opened at the lower part of the vertical plate, the workpiece sleeve extends from the strip groove to form free movement, the upper lifter is installed on the upper part of the vertical plate, the lifting end of the upper lifter is fixedly connected to the pressure head, and the bottom end of the pressure head is aligned with the top end of the positioning pin.

[0010] In the above-mentioned annular part dispensing and pressing equipment, the dispensing device includes a support frame, on which an AB glue injector and a lift are installed. The glue outlet of the AB glue injector is connected to a glue gun through a hose, and the glue gun is driven and connected by the lift, and the controller circuit is connected to the lift.

[0011] In the above-mentioned annular component dispensing and pressing equipment, a medicine gun is also installed on the support frame, a catalyst is stored in the medicine gun, and a medicine outlet nozzle of the medicine gun is arranged downward.

[0012] In the above-mentioned annular part dispensing and pressing equipment, an anti-vibration platform is arranged on the assembly table, and the anti-vibration platform includes multiple layers of parallel table plates, adjacent table plates are fixedly connected by anti-vibration columns, and the vibration plate is fixedly mounted on the top table plate of the anti-vibration platform.

[0013] In the above-mentioned annular part dispensing and pressing equipment, the vibration disk includes a disk-shaped main body, a spiral discharge disc is arranged in the disk-shaped main body, the discharge port of the discharge disc is connected to the straight track, a linear vibrator is arranged below the straight track, and corresponding sensors are arranged on the upper and lower sides of the straight track, and the corresponding sensors are connected to the controller through a circuit.

[0014] In the above-mentioned annular part dispensing and pressing equipment, the loading robot includes a loading robot arm, a clamping plate is installed on the free end of the loading robot arm through a rotating axis, and clamping cylinders are symmetrically installed on both sides of the clamping plate; the assembling robot includes an assembling robot arm, a material picking rack is installed on the free end of the assembling robot arm through a rotating axis, a telescope is arranged on the material picking rack, and the telescopic end of the telescope is fixedly connected to the suction rack.

[0015] The assembly method of the ring-shaped part dispensing and pressing device comprises the following steps:

[0016] 1) The feeding manipulator clamps an annular product from the feeder and moves it to the pressing device. The feeding manipulator supports the annular product and sleeves it on the edge of the collar of the workpiece sleeve, and makes the mounting holes on the annular product correspond to the assembly notches on the edge of the collar in a one-to-one communication;

[0017] 2) The assembly robot absorbs the assembly parts output by the vibration plate one by one and moves them to the dispensing device, dispensing glue and catalyst on the assembly parts in turn; the assembly robot then moves the assembly parts to the installation hole of the annular product;

[0018] 3) The lower lifter drives the positioning head to rise so that the positioning pin is inserted into the assembly part to form a fixed part. The upper lifter drives the pressure head to descend and hold it on the assembly part. The pressure head cooperates with the positioning pin to press and assemble the annular product with the assembly part.

[0019] 4) After completing the pressing operation of an assembly part, the lower lifter drives the positioning head down, and the upper lifter drives the pressure head up to release the assembly part; the rotator drives the workpiece sleeve to rotate a certain angle so that the next installation hole of the annular product enters the pressing position, and repeats step 3).

[0020] Compared with the prior art, the annular component dispensing and pressing device and assembly method have the following beneficial effects:

[0021] 1. According to the process and shape characteristics of the product, the corresponding sleeve structure is designed and the press-fit avoidance opening is opened to form a special processing structure to realize the circumferential accessories assembly of special products.

[0022] 2. Assembly method that matches inner cavity positioning and outer cavity pressing. The lifting method is used to switch the positioning pressing or release, and the rotation method is used to adjust the installation position. The two actions are reasonably arranged. Through orderly control, assembly can be achieved while avoiding mutual interference, improving assembly accuracy and work efficiency.

[0023] 3. The overall structure is simple and compact, which saves space and has stable and reliable functions. It is especially suitable for the installation of small-volume annular products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall three-dimensional structure of the ring-shaped parts dispensing and pressing equipment. Figure 1 .

[0025] Figure 2 It is the overall three-dimensional structure of the ring-shaped parts dispensing and pressing equipment. Figure 2 .

[0026] Figure 3 It is an overall top view of the structure of the ring-shaped parts dispensing and pressing equipment.

[0027] Figure 4 It is an overall three-dimensional structural diagram of the assembly table in the ring-shaped parts dispensing and pressing equipment.

[0028] Figure 5 It is a three-dimensional structural diagram of the pressing device in the ring-shaped part dispensing pressing equipment.

[0029] In the figure, 1. mounting base; 2. rotator; 3. workpiece sleeve; 4. lower lifter; 5. positioning rod; 6. positioning pin; 7. vertical plate; 8. upper lifter; 9. pressure head; 10. annular product; 11. assembly parts; 12. support frame; 13. AB glue injector; 14. lifter; 15. glue gun; 16. medicine gun; 17. anti-vibration table; 18. vibration plate; 19. feeding robot; 20. assembly robot. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] Embodiment 1

[0032] like Figures 1 to 5As shown, the annular part dispensing and pressing equipment includes a controller, a feeder and an assembly table, on which a vibration plate 18, a dispensing device and a pressing device are arranged, a loading robot 19 is connected between the feeder and the pressing device, an assembly robot 20 is connected between the vibration plate 18 and the dispensing device, the pressing device includes a workpiece sleeve 3, the workpiece sleeve 3 is driven and connected by a rotator 2, a positioning head is inserted into the workpiece sleeve 3, the positioning head is driven and connected by a lower lifter 4, a pressure head 9 is arranged opposite to the positioning head, and the pressure head 9 is driven and connected by an upper lifter 8; the controller is electrically connected to the feeder, the loading robot 19, the vibration plate 18, the assembly robot 20, the dispensing device, the rotator 2, the lower lifter 4 and the upper lifter 8.

[0033] In the ring-shaped part dispensing and pressing device, the feeder includes a discharge port, a lifting assembly is arranged below the discharge port, and a moving assembly is arranged beside the discharge port. The feeder belongs to the prior art, so it will not be described in detail here.

[0034] One end of the workpiece sleeve 3 is the edge of the collar, and at least two assembly notches are recessed on the edge of the collar; the positioning head includes a positioning rod 5 extending parallel to the workpiece sleeve 3, and a positioning pin 6 is vertically arranged at the end of the positioning rod 5, and the positioning pin 6 extends into the assembly notch. The annular product 10 is sleeved on the edge of the collar, and the assembly parts 11 on the annular product 10 are aligned with the assembly notches one by one. The positioning head is driven up by the lower lifter 4 so that the positioning pin 6 is inserted into the assembly part 11 to be fixed.

[0035] The pressing device includes a mounting seat 1, on which a rotator 2 is fixed, and the rotator 2 is connected to a workpiece sleeve 3 through a toothed disc transmission assembly. A connecting hole for connecting the working sleeve is provided on the mounting seat 1, and a lifting end of a lower lifter 4 is fixedly connected to a positioning rod 5, and the positioning rod 5 extends into the workpiece sleeve 3 through the connecting hole. The rotator 2 is specifically a motor, and the lower lifter 4 is specifically a lifting cylinder. The mounting seat 1 provides a fixed assembly for the rotator 2, and the toothed disc transmission assembly and the positioning rod 5 are arranged at the same time, so that the lifting action of the positioning rod 5 and the rotating action of the workpiece sleeve 3 are organically combined and do not interfere with each other.

[0036] The pressing device also includes a vertical plate 7, a strip groove is provided at the bottom of the vertical plate 7, the workpiece sleeve 3 extends from the strip groove to form free movement, and an upper lifter 8 is installed on the upper part of the vertical plate 7. The lifting end of the upper lifter 8 is fixedly connected to a pressure head 9, and the bottom end of the pressure head 9 is aligned with the top of the positioning pin 6. The upper lifter 8 specifically adopts a lifting cylinder. When the positioning pin 6 is inserted and fixed to the assembly part 11, the upper lifter 8 drives the pressure head 9 to descend and press on the assembly part 11, and the pressure head 9 cooperates with the positioning pin 6 to press and assemble the annular product 10 and the assembly part 11.

[0037] The glue dispensing device includes a support frame 12, on which an AB glue injector 13 and a lift 14 are mounted. The glue outlet of the AB glue injector 13 is connected to a glue gun 15 through a hose, and the glue gun 15 is driven and connected by the lift 14. The controller circuit is connected to the lift 14. The lift 14 specifically adopts a lifting cylinder. The two glues are mixed in equal proportions through the AB glue injector 13 and injected into the glue gun 15, and the glue gun 15 is driven by the lift 14 to adjust its position up and down so that the glue outlet of the glue gun 15 is aligned with the assembly part 11.

[0038] A medicine gun 16 is also mounted on the support frame 12. The medicine gun 16 stores a catalyst, and a medicine outlet of the medicine gun 16 is arranged downward. The catalyst is applied to the assembly part 11 by the medicine gun 16, thereby meeting the processing requirements of the assembly part 11.

[0039] The assembly table is provided with an anti-vibration table 17, which includes multiple layers of parallel table plates, adjacent table plates are fixedly connected by anti-vibration columns, and a vibration plate 18 is fixedly mounted on the top plate of the anti-vibration table 17. The multi-layer structure of the anti-vibration table 17 effectively reduces the vibration force of the vibration plate 18, avoids the vibration from affecting the dispensing and pressing operations, improves the accuracy of product assembly, and improves the quality of the finished product.

[0040] The vibration plate 18 includes a plate-shaped body, a spiral discharging disc is arranged inside the plate-shaped body, the discharging port of the discharging disc is connected to the straight track, a linear vibrator is arranged below the straight track, and a shooting sensor is arranged on both sides of the straight track, and the shooting sensor is connected to the controller through a circuit. A large number of assembly parts 11 are introduced into the plate-shaped body, and a number of assembly parts 11 are arranged in order along the discharging disc through continuous vibration and output one by one, and then arranged into the straight track, and a linear transmission power is provided by the linear vibrator, and the shooting sensor is used to sense whether an assembly part 11 passes through.

[0041] The feeding manipulator 19 includes a feeding manipulator arm, a clamping plate is mounted on the free end of the feeding manipulator arm through a rotating shaft, and clamping cylinders are symmetrically mounted on both sides of the clamping plate. The clamping cylinders on the feeding manipulator 19 open and close the clamping jaws to expand and clamp the annular product 10 from the inner ring, and further sleeve the annular product 10 on the collar edge of the workpiece sleeve 3.

[0042] The assembly robot 20 includes an assembly robot arm, a material taking frame is installed at the free end of the assembly robot arm through a rotating shaft, a telescope is arranged on the material taking frame, and the telescopic end of the telescope is fixedly connected to the suction frame. The assembly part 11 output by the vibration plate 18 is sucked and moved into the installation hole of the product by the suction frame of the assembly robot 20.

[0043] Compared with the prior art, the annular part dispensing and pressing device has the following beneficial effects:

[0044] 1. According to the process and shape characteristics of the product, the corresponding sleeve structure is designed and the press-fit avoidance opening is opened to form a special processing structure to realize the circumferential accessories assembly of special products.

[0045] 2. Assembly method that matches inner cavity positioning and outer cavity pressing. The lifting method is used to switch the positioning pressing or release, and the rotation method is used to adjust the installation position. The two actions are reasonably arranged. Through orderly control, assembly can be achieved while avoiding mutual interference, improving assembly accuracy and work efficiency.

[0046] 3. The overall structure is simple and compact, which saves space and has stable and reliable functions. It is especially suitable for the installation of small-volume annular products.

[0047] Embodiment 2

[0048] Based on the first embodiment, the differences of this embodiment are as follows:

[0049] The assembly method of the ring-shaped part dispensing and pressing device comprises the following steps:

[0050] 1) The feeding manipulator 19 clamps an annular product 10 from the feeder and moves it to the pressing device. The feeding manipulator 19 supports the annular product 10 and sleeves it on the edge of the collar of the workpiece sleeve 3, and makes the mounting holes on the annular product 10 correspond to the assembly notches on the edge of the collar in a one-to-one communication;

[0051] 2) The assembly robot 20 absorbs the assembly parts 11 outputted from the vibration plate 18 one by one and moves them to the glue dispensing device, and sequentially dispenses glue and catalyst on the assembly parts 11; the assembly robot 20 then moves the assembly parts 11 to the mounting hole of the annular product 10;

[0052] 3) The lower lifter 4 drives the positioning head to rise so that the positioning pin 6 is inserted into the assembly part 11 to be fixed, and the upper lifter 8 drives the pressure head 9 to descend and press on the assembly part 11. The pressure head 9 cooperates with the positioning pin 6 to press and assemble the annular product 10 and the assembly part 11;

[0053] 4) After completing the pressing operation of an assembly part 11, the lower lifter 4 drives the positioning head to descend, and the upper lifter 8 drives the pressure head 9 to rise to release the assembly part 11; the rotator 2 drives the workpiece sleeve 3 to rotate a certain angle, so that the next installation hole of the annular product 10 enters the pressing position, and repeats step 3).

[0054] Compared with the prior art, the assembly method of the ring-shaped part dispensing and pressing device has the following beneficial effects:

[0055] 1. According to the process and shape characteristics of the product, the corresponding sleeve structure is designed and the press-fit avoidance opening is opened to form a special processing structure to realize the circumferential accessories assembly of special products.

[0056] 2. Assembly method that matches inner cavity positioning and outer cavity pressing. The lifting method is used to switch the positioning pressing or release, and the rotation method is used to adjust the installation position. The two actions are reasonably arranged. Through orderly control, assembly can be achieved while avoiding mutual interference, improving assembly accuracy and work efficiency.

[0057] 3. The overall structure is simple and compact, which saves space and has stable and reliable functions. It is especially suitable for the installation of small-volume annular products.

[0058] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0059] Although this article uses more terms such as mounting base 1; rotator 2; workpiece sleeve 3; lower lifter 4; positioning rod 5; positioning pin 6; vertical plate 7; upper lifter 8; pressure head 9; annular product 10; assembly part 11; support frame 12; AB glue injector 13; elevator 14; glue gun 15; medicine gun 16; anti-vibration table 17; vibration plate 18; loading manipulator 19; assembly manipulator 20, it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An assembly method of a ring-shaped part glue dispensing and pressing device, the ring-shaped part glue dispensing and pressing device comprises a controller, a feeder and an assembly table, a vibration plate, a glue dispensing device and a pressing device are arranged on the assembly table, a feeding robot is connected between the feeder and the pressing device, an assembly robot is connected between the vibration plate and the glue dispensing device, the pressing device comprises a workpiece sleeve, the workpiece sleeve is connected by a rotator, a positioning head is inserted into the workpiece sleeve, the positioning head is connected by a lower lifter, a pressure head is arranged above the positioning head and oppositely, and the pressure head is connected by an upper lifter; The controller is electrically connected to the feeder, the feeding manipulator, the vibration plate, the assembly manipulator, the dispensing device, the rotator, the lower lifter and the upper lifter; one end of the workpiece sleeve is a collar edge, and at least two assembly notches are recessed on the collar edge; the positioning head comprises a positioning rod extending parallel to the workpiece sleeve, a positioning pin is vertically arranged at the end of the positioning rod, and the positioning pin extends into the assembly notch; the pressing device comprises a mounting seat, the rotator is fixedly mounted on the mounting seat, the rotator is connected to the workpiece sleeve through a geared disc transmission assembly, a connecting hole connected to the working sleeve is provided on the mounting seat, the lifting end of the lower lifter is fixedly connected to the positioning rod, and the positioning rod extends into the workpiece sleeve through the connecting hole; the pressing device also comprises a vertical plate, a strip groove is provided at the lower part of the vertical plate, the workpiece sleeve extends out of the strip groove to form free movement, the upper lifter is installed at the upper part of the vertical plate, the lifting end of the upper lifter is fixedly connected to the pressure head, and the bottom end of the pressure head is aligned with the top end of the positioning pin; The assembly method of the ring-shaped part dispensing and pressing device is characterized in that: The following steps are involved: 1) The feeding manipulator clamps a ring-shaped product from the feeder and moves it to the pressing device. The feeding manipulator supports the ring-shaped product and sleeves it on the edge of the sleeve of the workpiece sleeve, and makes the mounting holes on the ring-shaped product correspond to the assembly notches on the edge of the sleeve. 2) The assembly robot absorbs the assembly parts output by the vibration plate one by one and moves them to the dispensing device, dispensing glue and catalyst on the assembly parts in turn; the assembly robot then moves the assembly parts to the installation hole of the annular product; 3) The lower lifter drives the positioning head to rise so that the positioning pin is inserted into the assembly part to form a fixed part. The upper lifter drives the pressure head to descend and hold it on the assembly part. The pressure head and the positioning pin cooperate to press and assemble the annular product and the assembly part. 4) After completing the pressing operation of an assembly part, the lower lifter drives the positioning head down, and the upper lifter drives the pressure head up to release the assembly part; the rotator drives the workpiece sleeve to rotate a certain angle, so that the next installation hole of the annular product enters the pressing position, and repeats step 3).

2. The assembly method of the ring-shaped part dispensing and pressing device according to claim 1, characterized in that: The glue dispensing device includes a support frame, on which an AB glue injector and a lift are installed. The glue outlet of the AB glue injector is connected to a glue gun through a hose, the glue gun is driven and connected by the lift, and the controller circuit is connected to the lift.

3. The assembly method of the ring-shaped part dispensing and pressing device according to claim 2, characterized in that: A medicine gun is also installed on the support frame. Catalyst is stored in the medicine gun, and the medicine outlet of the medicine gun is arranged downward.

4. The method for assembling the ring-shaped part dispensing and pressing device according to claim 1, characterized in that: An anti-vibration platform is arranged on the assembly platform, and the anti-vibration platform comprises multiple layers of parallel platform plates, adjacent platform plates are fixedly connected by anti-vibration columns, and the vibration plate is fixedly mounted on the top platform plate of the anti-vibration platform.

5. The method for assembling the ring-shaped component dispensing and pressing device according to claim 4, characterized in that: The vibration plate includes a plate-shaped main body, a spiral discharge disc is arranged in the plate-shaped main body, a discharge port of the discharge disc is connected to a straight track, a linear vibrator is arranged below the straight track, and a beam sensor is arranged on the upper and lower sides of the straight track, and the beam sensor is connected to the controller through a circuit.

6. The method for assembling the ring-shaped component dispensing and pressing device according to claim 1, characterized in that: The loading robot comprises a loading robot arm, a clamping plate is mounted on the free end of the loading robot arm through a rotating axis, and clamping cylinders are symmetrically mounted on both sides of the clamping plate; the assembling robot comprises an assembling robot arm, a material picking rack is mounted on the free end of the assembling robot arm through a rotating axis, a telescope is arranged on the material picking rack, and the telescopic end of the telescope is fixedly connected to the suction rack.

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