Mouthpiece stem with sleeve

Abstract

The utility model belongs to the technical field of suction nozzle rod, especially relates to suction nozzle rod adds the cover, including sucking the rod and sliding rod, still include: sliding groove, sliding groove is set up in sucking the rod, sliding rod is inserted and is installed in the sliding groove, the both sides of sliding rod all are equipped with the guide groove, the both sides of sliding groove all are equipped with the storage groove and are located sliding rod, two storage grooves all place a plurality of steel balls, a plurality of steel balls respectively extend to two guide grooves, the first fixed ring is inserted and installed in sucking the rod, the second fixed ring is inserted and installed in sucking the rod and is located the top of first fixed ring, threaded column, threaded column fixed mounting is at the bottom of sucking the rod, the bottom fixed mounting of threaded column has the fixed column, the sanding sleeve is set up in sucking the rod, the thickening of sucking the rod's upper end is provided, ensures sucking the rod and will not be damaged when using, and the sanding sleeve can drive sucking the rod to rotate simultaneously with the belt, increase the friction of the belt, guarantee that sucking the rod can rotate stably, and can install a plurality of steel balls, and the operation is convenient and fast.

Description

Technical Field

[0001] This utility model belongs to the field of suction rod technology, and in particular relates to a suction rod with a sleeve. Background Technology

[0002] In the production line, the pick-and-place machine is set after the dispensing machine or screen printer. It is a device that accurately places surface mount components onto PCB pads by moving the placement head. The nozzle rod is a key component of the pick-and-place machine. Its main function is to support and fix the nozzle, ensuring that the pick-and-place machine can perform component picking and placement operations normally and stably.

[0003] Most suction rods have some drawbacks in use, such as the possibility of damage to the connecting end due to excessive tightening when the rod diameter is large. The heavy weight of a large suction rod means that excessive tightening can cause the connecting part to experience excessive inertial torque and stress concentration, leading to thread stripping, snap-fit ​​breakage, or fatigue cracking of the metal at the connection. Especially under high-speed operating conditions, an excessively tight rigid connection will exacerbate mechanical wear and reduce equipment reliability, requiring torque control and structural optimization to mitigate these risks. Therefore, we propose adding a sleeve to the suction rod. Utility Model Content

[0004] The purpose of this invention is to provide a sleeve for the suction rod to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a suction rod sleeve, including a suction rod and a sliding rod, and further comprising:

[0006] A sliding groove is formed inside the suction rod, and the sliding rod is inserted into the sliding groove. Guide grooves are formed on both sides of the sliding rod. Storage grooves are formed inside the sliding groove and on both sides of the sliding rod. Several steel balls are placed in each of the two storage grooves. Several steel balls extend into the two guide grooves respectively. A first fixing ring is inserted into the suction rod, and a second fixing ring is inserted into the suction rod and at the top of the first fixing ring.

[0007] A threaded column is fixedly installed at the bottom end of the suction rod, and a fixing column is fixedly installed at the bottom end of the threaded column. A frosted sleeve is fitted on the suction rod.

[0008] A fixing component, located inside the suction rod, is used to fix the positions of the first fixing ring and the second fixing ring;

[0009] A limiting component is located on the suction rod and is used to limit the position of the frosted sleeve and the sliding rod.

[0010] In this technical solution, when it is necessary to fix the sliding rod in the sliding groove, the sliding rod is first inserted into the sliding groove, and several steel balls are inserted into two guide grooves respectively. This can limit the position of the sliding rod, ensuring that the sliding rod can only slide up and down in the sliding groove and cannot rotate. The position of the sliding rod can be positioned by the set limiting component to ensure that the sliding rod will not slide. The thickening of the upper end of the suction rod ensures that the suction rod will not be damaged during use.

[0011] Then, the frosted sleeve is fitted onto the suction rod. The limiting component ensures that the frosted sleeve cannot be displaced. The frosted sleeve allows the belt to drive the suction rod to rotate, increasing the friction of the belt and ensuring that the suction rod can rotate stably.

[0012] When installing several steel balls, first place the steel balls into two storage slots respectively, then insert the first fixing ring and the second fixing ring into the suction rod. The first fixing ring and the second fixing ring can be fixed by the fixed components. This allows for the installation of several steel balls in a convenient and quick manner.

[0013] In the above technical solution, further, two first screws are inserted and installed on the second fixing ring. The lower ends of the two first screws pass through the first fixing ring and extend into the suction rod. The two first screws are threadedly connected to the suction rod and are inserted into the first fixing ring.

[0014] In this technical solution, when installing several steel balls, the steel balls are first placed in two storage slots respectively. Then, the first fixing ring and the second fixing ring are inserted into the suction rod. Then, a tool is used to thread two first screws through the first fixing ring and the second fixing ring into the suction rod. This method can install several steel balls and is convenient and quick to operate.

[0015] In the above technical solution, the limiting component further includes:

[0016] Two grooves are provided on the suction rod. Two second threaded holes are provided on the frosted sleeve. The two second threaded holes are located on one side of the two grooves respectively. A second screw is threaded into each of the two second threaded holes. One end of each of the two second screws passes through the two second threaded holes and extends into the two grooves respectively.

[0017] Two first threaded holes are formed inside the suction rod and are connected to the sliding groove. A third screw is threaded into each of the two first threaded holes. One end of each third screw passes through the two first threaded holes and is in close contact with the sliding rod.

[0018] In this technical solution, when it is necessary to fix the sliding rod in the sliding groove, the sliding rod is first inserted into the sliding groove, and at the same time, two second arc-shaped strips are respectively inserted into two guide grooves to pre-position the sliding rod, making it easier for the sliding rod to be inserted into the sliding groove. Then, two first arc-shaped strips are respectively inserted into two guide grooves, and then the sliding rod is inserted into the sliding groove. Several steel balls are respectively inserted into two guide grooves to limit the position of the sliding rod, ensuring that the sliding rod can only slide up and down in the sliding groove and cannot rotate. Finally, two third screws are threaded into two first threaded holes using a screwdriver. Both third screws are in contact with the sliding rod, which can position the sliding rod and ensure that the sliding rod will not slide. The thickened design at the upper end of the suction rod ensures that the suction rod will not be damaged during use.

[0019] Then, the frosted sleeve is placed on the suction rod, and the two second threaded holes are rotated to one side of the two grooves respectively. Then, the two second screws are screwed into the two second threaded holes respectively. Finally, the two second screws are in close contact with the two grooves respectively to ensure that the frosted sleeve cannot be displaced. Through the frosted sleeve, the belt can drive the suction rod to rotate through the frosted sleeve, increasing the friction of the belt and ensuring that the suction rod can rotate stably.

[0020] In the above technical solution, furthermore, two adjacent steel balls are in close contact.

[0021] In this technical solution, several steel balls are inserted into two guide grooves respectively, which can limit the position of the sliding rod and ensure that the sliding rod can only slide up and down in the sliding groove and cannot rotate.

[0022] In the above technical solution, two first arc-shaped strips are fixedly installed on the first fixing ring, and the two first arc-shaped strips extend into two guide grooves respectively. Two second arc-shaped strips are fixedly installed on the second fixing ring, and the two second arc-shaped strips extend into two guide grooves respectively.

[0023] In this technical solution, when it is necessary to fix the sliding rod in the sliding groove, the sliding rod is first inserted into the sliding groove, and at the same time, the two second arc-shaped strips are respectively inserted into the two guide grooves. Then, the two first arc-shaped strips are respectively inserted into the two guide grooves. Next, the sliding rod is inserted into the sliding groove. The position of the sliding rod can be pre-positioned, which facilitates the insertion of the sliding rod into the sliding groove.

[0024] In the above technical solution, the inner wall of the frosted sleeve is further fitted to the suction rod.

[0025] In this technical solution, it is ensured that the rotation of the frosted sleeve can drive the suction rod to rotate stably.

[0026] In the above technical solution, a keyway is further provided on the fixing post.

[0027] In this technical solution, the keyway facilitates the positioning and installation of the fixing column.

[0028] The beneficial effects of this utility model are:

[0029] 1. The suction rod is fitted with a sleeve. When it is necessary to fix the sliding rod in the sliding groove, first insert the sliding rod into the sliding groove. Several steel balls are inserted into two guide grooves respectively to limit the position of the sliding rod, ensuring that the sliding rod can only slide up and down in the sliding groove and cannot rotate. The position of the sliding rod can be positioned by the set limiting component to ensure that the sliding rod will not slide. The thickened design at the upper end of the suction rod ensures that the suction rod will not be damaged during use.

[0030] 2. The suction rod is fitted with a sleeve, with a frosted sleeve placed on the suction rod. The set limiting component ensures that the frosted sleeve cannot be displaced. The frosted sleeve allows the belt to drive the suction rod to rotate through the frosted sleeve, increasing the friction of the belt and ensuring that the suction rod can rotate stably.

[0031] 3. With the addition of a sleeve to the suction rod, when installing several steel balls, first place the steel balls into two storage slots respectively, then insert the first fixing ring and the second fixing ring into the suction rod. The first fixing ring and the second fixing ring can be fixed by the set fixing components, which can install several steel balls and is convenient and quick to operate. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the frosted sleeve area structure of this utility model;

[0034] Figure 3 This is a schematic diagram of the sliding rod structure of this utility model;

[0035] Figure 4 This is a schematic diagram of the suction rod structure of this utility model;

[0036] Figure 5 This is one of the schematic diagrams of a partial explosion structure of this utility model;

[0037] Figure 6 This is the second schematic diagram of the partial explosion structure of this utility model;

[0038] Figure 7 This is a schematic diagram of the steel ball region structure of this utility model.

[0039] The markings in the diagram are as follows:

[0040] 1. Suction rod; 2. Storage slot; 3. Steel ball; 4. First fixing ring; 5. First arc-shaped strip; 6. Second fixing ring; 7. Second arc-shaped strip; 8. First screw; 9. Sliding groove; 10. Groove; 11. First threaded hole; 12. Threaded post; 13. Fixing post; 14. Keyway; 15. Sliding rod; 16. Guide groove; 17. Frosted sleeve; 18. Second threaded hole; 19. Second screw; 20. Third screw. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0042] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0043] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0044] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0045] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0046] Example 1:

[0047] Please see Figure 1 - Figure 7 As shown, this embodiment provides a suction rod sleeve, including a suction rod 1 and a sliding rod 15, and also includes:

[0048] A sliding groove 9 is formed inside the suction rod 1. A sliding rod 15 is inserted into the sliding groove 9. Guide grooves 16 are formed on both sides of the sliding rod 15. Storage grooves 2 are formed inside the sliding groove 9 and on both sides of the sliding rod 15. Several steel balls 3 are placed in each of the two storage grooves 2. The steel balls 3 extend into the two guide grooves 16 respectively. A first fixing ring 4 is inserted into the suction rod 1. A second fixing ring 6 is inserted into the suction rod 1 and at the top of the first fixing ring 4.

[0049] A threaded post 12 is fixedly installed at the bottom end of the suction rod 1. A fixing post 13 is fixedly installed at the bottom end of the threaded post 12. A frosted sleeve 17 is fitted on the suction rod 1.

[0050] A fixing component is located inside the suction rod 1 and is used to fix the positions of the first fixing ring 4 and the second fixing ring 6.

[0051] A limiting component is located on the suction rod 1 and is used to limit the position of the frosted sleeve 17 and the sliding rod 15.

[0052] When it is necessary to fix the sliding rod 15 in the sliding groove 9, the sliding rod 15 is first inserted into the sliding groove 9, and several steel balls 3 are respectively inserted into the two guide grooves 16. The position of the sliding rod 15 can be limited to ensure that the sliding rod 15 can only slide up and down in the sliding groove 9 and cannot rotate. The position of the sliding rod 15 can be positioned by the set limiting component to ensure that the sliding rod 15 will not slide. The thickening of the upper end of the suction rod 1 ensures that the suction rod 1 will not be damaged during use.

[0053] Then, the frosted sleeve 17 is fitted onto the suction rod 1. The limiting component ensures that the frosted sleeve 17 cannot be displaced. The frosted sleeve 17 allows the belt to drive the suction rod 1 to rotate, increasing the friction of the belt and ensuring that the suction rod 1 can rotate stably.

[0054] When installing several steel balls 3, first place several steel balls 3 into two storage slots 2 respectively, and then insert the first fixing ring 4 and the second fixing ring 6 into the suction rod 1. Through the set fixing components, the first fixing ring 4 and the second fixing ring 6 can be fixed, and several steel balls 3 can be installed. The operation is convenient and quick.

[0055] In this embodiment, two first screws 8 are inserted into the second fixing ring 6. The lower ends of the two first screws 8 pass through the first fixing ring 4 and extend into the suction rod 1. The two first screws 8 are threadedly connected to the suction rod 1, and the two first screws 8 are inserted into the first fixing ring 4.

[0056] When installing several steel balls 3, first place several steel balls 3 into two storage slots 2 respectively, then insert the first fixing ring 4 and the second fixing ring 6 into the suction rod 1, and then use a tool to thread two first screws 8 through the first fixing ring 4 and the second fixing ring 6 into the suction rod 1. This method can install several steel balls 3 and is convenient and quick to operate.

[0057] In this embodiment, the limiting component includes:

[0058] Two grooves 10 are provided on the suction rod 1. Two second threaded holes 18 are provided on the frosted sleeve 17. The two second threaded holes 18 are located on one side of the two grooves 10 respectively. A second screw 19 is threaded into each of the two second threaded holes 18. One end of the two second screws 19 passes through the two second threaded holes 18 and extends into the two grooves 10 respectively.

[0059] Two first threaded holes 11 are opened in the suction rod 1, and both first threaded holes 11 are connected to the sliding groove 9. A third screw 20 is threaded in each of the two first threaded holes 11. One end of each third screw 20 passes through the two first threaded holes 11, and one end of each third screw 20 is in close contact with the sliding rod 15.

[0060] When it is necessary to fix the sliding rod 15 in the sliding groove 9, firstly, the sliding rod 15 is inserted into the sliding groove 9, and at the same time, the two second arc-shaped strips 7 are respectively inserted into the two guide grooves 16 to pre-position the sliding rod 15, making it easy for the sliding rod 15 to be inserted into the sliding groove 9. Then, the two first arc-shaped strips 5 are respectively inserted into the two guide grooves 16. Next, the sliding rod 15 is inserted into the sliding groove 9, and several steel balls 3 are respectively inserted into the two guide grooves 16 to limit the position of the sliding rod 15, ensuring that the sliding rod 15 can only slide up and down in the sliding groove 9 and cannot rotate. Finally, a screwdriver is used to thread the two third screws 20 into the two first threaded holes 11. Both third screws 20 are in contact with the sliding rod 15, which can position the sliding rod 15 and ensure that the sliding rod 15 will not slide. The thickened design at the upper end of the suction rod 1 ensures that the suction rod 1 will not be damaged during use.

[0061] Then, the frosted sleeve 17 is fitted onto the suction rod 1, and the two second threaded holes 18 are rotated to one side of the two grooves 10 respectively. Then, the two second screws 19 are screwed into the two second threaded holes 18 respectively using a screwdriver. Finally, the two second screws 19 are in close contact with the two grooves 10 respectively to ensure that the frosted sleeve 17 cannot be displaced. Through the frosted sleeve 17, the belt can drive the suction rod 1 to rotate through the frosted sleeve 17, increasing the friction of the belt and ensuring that the suction rod 1 can rotate stably.

[0062] Example 2:

[0063] This embodiment provides a nozzle rod sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] In this embodiment, two adjacent steel balls 3 are in close contact.

[0065] Specifically, by ensuring that several steel balls 3 are inserted into two guide grooves 16 respectively, the position of the sliding rod 15 can be limited, ensuring that the sliding rod 15 can only slide up and down within the sliding groove 9 and cannot rotate.

[0066] Example 3:

[0067] This embodiment provides a nozzle rod sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] In this embodiment, two first arc-shaped strips 5 are fixedly installed on the first fixing ring 4, and the two first arc-shaped strips 5 extend into the two guide grooves 16 respectively. Two second arc-shaped strips 7 are fixedly installed on the second fixing ring 6, and the two second arc-shaped strips 7 extend into the two guide grooves 16 respectively.

[0069] When it is necessary to fix the sliding rod 15 in the sliding groove 9, the sliding rod 15 is first inserted into the sliding groove 9, and at the same time, the two second arc-shaped bars 7 are respectively inserted into the two guide grooves 16. Then, the two first arc-shaped bars 5 are respectively inserted into the two guide grooves 16. Then the sliding rod 15 is inserted into the sliding groove 9. The position of the sliding rod 15 can be pre-positioned to facilitate the insertion of the sliding rod 15 into the sliding groove 9.

[0070] Example 4:

[0071] This embodiment provides a nozzle rod sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] In this embodiment, the inner wall of the frosted sleeve 17 is in contact with the suction rod 1.

[0073] Among them, it is ensured that the rotation of the frosted sleeve 17 can drive the suction rod 1 to rotate stably.

[0074] Example 5:

[0075] This embodiment provides a nozzle rod sleeve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0076] In this embodiment, a keyway 14 is provided on the fixing post 13.

[0077] The keyway 14 facilitates the positioning and installation of the fixing post 13.

[0078] Working principle: When it is necessary to fix the sliding rod 15 in the sliding groove 9, firstly, the sliding rod 15 is inserted into the sliding groove 9, and at the same time, the two second arc-shaped bars 7 are respectively inserted into the two guide grooves 16 to pre-position the sliding rod 15, making it easy for the sliding rod 15 to be inserted into the sliding groove 9. Then, the two first arc-shaped bars 5 are respectively inserted into the two guide grooves 16. Next, the sliding rod 15 is inserted into the sliding groove 9, and several steel balls 3 are respectively inserted into the two guide grooves 16 to limit the position of the sliding rod 15, ensuring that the sliding rod 15 can only slide up and down in the sliding groove 9 and cannot rotate. Finally, a screwdriver is used to thread the two third screws 20 into the two first threaded holes 11. Both third screws 20 are in contact with the sliding rod 15, which can position the sliding rod 15 and ensure that the sliding rod 15 will not slide. The thickened design at the upper end of the suction rod 1 ensures that the suction rod 1 will not be damaged during use.

[0079] Then, the frosted sleeve 17 is fitted onto the suction rod 1, and the two second threaded holes 18 are rotated to one side of the two grooves 10 respectively. Then, the two second screws 19 are screwed into the two second threaded holes 18 respectively using a screwdriver. Finally, the two second screws 19 are in close contact with the two grooves 10 respectively to ensure that the frosted sleeve 17 cannot be displaced. Through the frosted sleeve 17, the belt can drive the suction rod 1 to rotate through the frosted sleeve 17, increasing the friction of the belt and ensuring that the suction rod 1 can rotate stably.

[0080] When installing several steel balls 3, first place several steel balls 3 into two storage slots 2 respectively, then insert the first fixing ring 4 and the second fixing ring 6 into the suction rod 1, and then use a tool to thread two first screws 8 through the first fixing ring 4 and the second fixing ring 6 into the suction rod 1. This can install several steel balls 3, and the operation is convenient and quick.

[0081] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A suction rod with a sleeve, comprising a suction rod (1) and a sliding rod (15), characterized in that, Also includes: A sliding groove (9) is formed inside the suction rod (1). The sliding rod (15) is inserted into the sliding groove (9). Guide grooves (16) are formed on both sides of the sliding rod (15). Storage grooves (2) are formed inside the sliding groove (9) and on both sides of the sliding rod (15). Several steel balls (3) are placed in the two storage grooves (2). The steel balls (3) extend into the two guide grooves (16). A first fixing ring (4) is inserted into the suction rod (1). A second fixing ring (6) is inserted into the suction rod (1) and at the top of the first fixing ring (4). A threaded column (12) is fixedly installed at the bottom end of the suction rod (1), and a fixing column (13) is fixedly installed at the bottom end of the threaded column (12). A frosted sleeve (17) is fitted on the suction rod (1). A fixing component is located inside the suction rod (1) and is used to fix the positions of the first fixing ring (4) and the second fixing ring (6); A limiting component is located on the suction rod (1) and is used to limit the position of the frosted sleeve (17) and the sliding rod (15).

2. The suction rod with sleeve according to claim 1, characterized in that, The fixing component includes: Two first screws (8) are inserted into the second fixing ring (6). The lower ends of the two first screws (8) pass through the first fixing ring (4) and extend into the suction rod (1). The two first screws (8) are threadedly connected to the suction rod (1), and the two first screws (8) are inserted into the first fixing ring (4).

3. The suction rod sleeve according to claim 2, characterized in that, The limiting component includes: Two grooves (10) are provided on the suction rod (1). Two second threaded holes (18) are provided on the frosted sleeve (17). The two second threaded holes (18) are located on one side of the two grooves (10). A second screw (19) is threaded into each of the two second threaded holes (18). One end of each of the two second screws (19) passes through the two second threaded holes (18) and extends into the two grooves (10). Two first threaded holes (11) are opened in the suction rod (1) and are connected to the sliding groove (9). A third screw (20) is threaded in each of the two first threaded holes (11). One end of each of the two third screws (20) passes through the two first threaded holes (11) respectively, and one end of each of the two third screws (20) is in close contact with the sliding rod (15).

4. The suction rod with sleeve according to claim 1, characterized in that, The two adjacent steel balls (3) are in close contact.

5. The suction rod with sleeve according to claim 1, characterized in that, Two first arc-shaped strips (5) are fixedly installed on the first fixing ring (4), and the two first arc-shaped strips (5) extend into the two guide grooves (16) respectively. Two second arc-shaped strips (7) are fixedly installed on the second fixing ring (6), and the two second arc-shaped strips (7) extend into the two guide grooves (16) respectively.

6. The suction rod with sleeve according to claim 1, characterized in that, The inner wall of the frosted sleeve (17) fits against the suction rod (1).

7. The suction rod with sleeve according to claim 1, characterized in that, A keyway (14) is provided on the fixed column (13).

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