Silica gel tube cutting machine for silica gel production and processing

Abstract

The utility model discloses a silica gel tube cutting machine for silica gel production and processing, which comprises a support frame, a plurality of groups of support rollers are rotatably mounted on the support frame, a plurality of groups of limit retaining frames are fittingly arranged on the support rollers, a movable adjusting structure is arranged between the limit retaining frames and the support frame, a mounting shaft is arranged at the front end of a fixing frame, and a driving roller is sleeved on the mounting shaft. A fastening adjusting structure is arranged between the driving roller and the mounting shaft, mounting bases are rotationally arranged at the two ends of the mounting shaft through bearings, lifting adjusting structures are arranged between the mounting bases and the supporting frame, a cutting base is arranged at the front end of the supporting frame, a mounting frame is arranged above the cutting base, and a first electric push rod is arranged at the bottom end of the mounting frame; a cutting tool apron is arranged at the bottom end of the first electric push rod, a cutting blade is arranged at the bottom end of the cutting tool apron, and pressing structures matched with the cutting blade are arranged on the two sides of the cutting tool apron.

Description

Technical Field

[0001] The utility model relates to the technical field of silicone tube cutting, and more specifically, it relates to a silicone tube cutting machine for silicone production and processing. Background Technique

[0002] A silicone tube is a tubular product made of silicone material. Silicone is a highly active adsorbent material, usually divided into organic silicone and inorganic silicone. Silicone tubes have good heat resistance, cold resistance, chemical resistance and aging resistance, so they are widely used in many industrial fields and daily necessities.

[0003] After the silicone tube is extruded and formed, its length is relatively long. Therefore, it is necessary to cut the long silicone tube according to requirements to meet different usage needs.

[0004] When the existing silicone tube cutting machine realizes the transportation during the silicone tube cutting process, most of the bottom is a stainless steel plate structure. When the silicone tube is transported, there will be sliding friction between the bottom and the stainless steel plate support structure, which easily causes wear of the silicone tube during transportation.

[0005] In addition, when the existing silicone tube is cut, the two sides cannot be firmly pressed, so during cutting, the situation of warping edges is likely to occur, affecting the cutting stability of the silicone tube.

[0006] In addition, the diameter sizes of silicone tubes are diverse. When the existing silicone tube cutting machine realizes the transportation during the silicone tube cutting process, it is not convenient to flexibly limit the transportation position according to the size of the silicone tube. Content of the Utility Model

[0007] (1) Technical Problems to be Solved

[0008] In view of the problems existing in the prior art, the utility model provides a silicone tube cutting machine for silicone production and processing to solve the technical problems mentioned in the background technique, that is, when the existing silicone tube cutting machine for silicone production and processing realizes the cutting of silicone tubes, the transportation flexibility and protection performance are poor, and the stability is poor, and it is not convenient to flexibly adjust the limiting space of the silicone tube.

[0009] (2) Technical Solutions

[0010] To achieve the above object, the utility model provides the following technical solutions:

[0011] A silicone tube cutting machine for silicone production and processing, including a support frame. A plurality of support rollers are rotatably installed on the support frame. A plurality of limiting brackets are arranged in cooperation with the support rollers. A moving and adjusting structure is arranged between the limiting brackets and the support frame. An installation shaft is arranged at the front end of the fixed frame. A driving roller is sleeved on the installation shaft. A fastening and adjusting structure is arranged between the driving roller and the installation shaft. Both ends of the installation shaft are rotatably provided with installation seats through bearings. A lifting and adjusting structure is arranged between the installation seats and the support frame. A cutting seat is arranged at the front end of the support frame. An installation frame is arranged above the cutting seat. A first electric push rod is arranged at the bottom end of the installation frame. A cutting knife seat is arranged at the bottom end of the first electric push rod. A cutting blade is arranged at the bottom end of the cutting knife seat. Pressing structures are arranged on both sides of the cutting knife seat in cooperation with the cutting blade.

[0012] The present utility model is further arranged such that the pressing structure includes pressing plates arranged on both sides of the cutting blade. A first spring is arranged between the pressing plates and the cutting knife seat, and a first limiting telescopic rod is arranged in cooperation with the first spring. Through the cooperation of the first spring and the pressing plates, stable pressing on both sides of the cutting blade can be achieved when cutting the silicone tube, improving the cutting stability of the silicone tube. The setting of the first limiting telescopic rod can improve the installation and use stability of the pressing plates.

[0013] The present utility model is further arranged such that a conveying channel is formed between two adjacent limiting brackets. The position of the driving roller matches the conveying channel and is used for conveying the silicone tube on the support rollers during cutting.

[0014] The present utility model is further arranged such that the moving and adjusting structure includes a fixed frame arranged on the support frame. The fixed frame is located above the limiting brackets, and an adjusting connection structure is arranged between the fixed frame and the limiting brackets to realize the installation and fixation of the limiting brackets above the support rollers. Here, the support rollers and the limiting brackets are in a state of being close but not in contact.

[0015] The present utility model is further arranged such that the adjusting connection structure includes an adjusting groove opened on the fixed frame. An adjusting column is arranged in the adjusting groove. The bottom end of the adjusting column is in threaded cooperation with the limiting bracket, and an adjusting knob is arranged at the top end. Through the cooperation of the adjusting groove, the adjusting column and the adjusting knob, the installation and fixation of the limiting brackets on the fixed frame can be realized.

[0016] The present utility model is further arranged such that the lifting and adjusting structure includes a fixed seat arranged on the support frame. A lifting seat is arranged on the fixed seat in a liftable manner. A lifting and adjusting component is arranged between the lifting seat and the fixed seat, and an elastic connection structure is arranged between the top end of the lifting seat and the installation seat. Through the cooperation of the lifting seat and the fixed seat, the lifting adjustment of the driving roller can be realized.

[0017] The present utility model is further configured such that the lifting and adjusting assembly includes a lifting groove formed in the fixed seat, a second electric push rod is arranged in the lifting groove, the bottom end of the lifting seat is slidably located in the lifting groove and is connected to the output end of the second electric push rod. The cooperation of the second electric push rod and the lifting groove can realize the liftable installation of the lifting seat on the fixed seat.

[0018] The present utility model is further configured such that the elastic connection structure includes a second spring arranged between the lifting seat and the mounting seat, and a second limit telescopic rod is arranged in cooperation with the second spring. The elastic and stable installation of the mounting seat on the lifting seat can be realized through the cooperation of the second spring and the second limit telescopic rod.

[0019] The present utility model is further configured such that the fastening and adjusting structure includes a mounting groove formed in the driving roller, a fastener is arranged in the mounting groove in a threaded manner, and the inner end of the fastener abuts against the mounting shaft. The movable installation of the driving roller on the mounting shaft can be realized through the cooperation of the mounting groove and the fastener.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present utility model provides a silicone tube cutting machine for silicone production and processing, which has the following beneficial effects:

[0022] 1. The present utility model includes a support frame, multiple groups of support rollers are rotatably installed on the support frame, multiple groups of limit brackets are arranged in cooperation with the support rollers, and a moving and adjusting structure is arranged between the limit brackets and the support frame. Among them, the moving and adjusting structure includes a fixed frame arranged on the support frame, the fixed frame is located above the limit bracket, and an adjusting connection structure is arranged between the fixed frame and the limit bracket. The adjusting connection structure includes an adjusting groove formed in the fixed frame, an adjusting column is arranged in the adjusting groove, the bottom end of the adjusting column is in threaded cooperation with the limit bracket, and an adjusting knob is arranged at the top end. A conveying channel is formed between two adjacent groups of limit brackets, and the position of the driving roller matches the conveying channel. In this way, the distance between two adjacent groups of limit brackets can be adjusted flexibly, so that the size of the conveying channel can be adjusted according to the size of the silicone hose, and the flexibility of the limit adjustment of the conveying space during the cutting of the silicone tube can be improved.

[0023] 2. The front end of the fixing frame of the present utility model is provided with a mounting shaft, on which a driving roller is sleeved. A fastening and adjusting structure is arranged between the driving roller and the mounting shaft. The fastening and adjusting structure includes a mounting groove opened on the driving roller, and a fastener is arranged in the mounting groove in a threaded manner. The inner end of the fastener abuts against the mounting shaft. In this way, the mounting position of the driving roller on the mounting shaft can be flexibly adjusted, so that the mounting position of the driving roller can be flexibly adjusted according to the adjustment of the conveying channel. After adjusting to a suitable position, tighten the fastener so that the fastener moves inward to squeeze the mounting shaft, thereby realizing the locking and fixing of the driving roller on the mounting shaft.

[0024] 3. The two ends of the mounting shaft of the present utility model are rotatably provided with mounting seats through bearings. A lifting and adjusting structure is arranged between the mounting seats and the support frame. The lifting and adjusting structure includes a fixed seat arranged on the support frame, and a lifting seat is arranged on the fixed seat in a liftable manner. A lifting and adjusting component is arranged between the lifting seat and the fixed seat. The lifting and adjusting component includes a lifting groove opened on the fixed seat, a second electric push rod is arranged in the lifting groove, the bottom end of the lifting seat slides in the lifting groove and is connected to the output end of the second electric push rod. In this way, during use, start the second electric push rod, and the lifting and lowering adjustment of the lifting seat in the lifting groove can be controlled through the second electric push rod. The lifting and lowering of the mounting seat can be controlled through the lifting and lowering of the lifting seat, and the lifting and lowering of the driving roller can be controlled through the lifting and lowering of the mounting seat, so that the driving position of the driving roller can be flexibly adjusted according to the size of the silicone tube.

[0025] 4. An elastic connection structure is arranged between the top end of the lifting seat and the mounting seat. The elastic connection structure includes a second spring arranged between the lifting seat and the mounting seat, and a second limit telescopic rod is arranged in cooperation with the second spring. Through the setting of the second spring, the elastic mounting of the mounting seat on the top end of the lifting seat can be realized. In this way, while keeping the driving roller in driving contact with the silicone tube, the rigid extrusion between the driving roller and the silicone tube can be avoided, and the driving flexibility of the silicone tube can be improved. The setting of the second limit telescopic rod can improve the mounting stability of the mounting seat on the lifting seat.

[0026] 4. Pressing structures are arranged on both sides of the cutting tool seat in cooperation with the cutting blades. The pressing structures include pressing plates arranged on both sides of the cutting blades. A first spring is arranged between the pressing plates and the cutting tool seat, and a first limit telescopic rod is arranged in cooperation with the first spring. In this way, when the cutting tool seat drives the cutting blades to descend, the pressing plates will be driven to descend synchronously through the first spring, so that the pressing plates first contact the silicone tube, realizing the pressing and fixing of the silicone tube before cutting, and further squeezing the first spring, realizing the cutting of the silicone tube by the cutting blades. Here, the setting of the first limit telescopic rod can improve the stability of the pressing plates during movement. Description of the Drawings

[0027] Figure 1Schematic diagram of the overall structure of a silicone tube cutting machine for silicone production and processing in the present utility model Figure I ;

[0028] Figure 2 Schematic diagram of the overall structure of a silicone tube cutting machine for silicone production and processing in the present utility model Figure II ;

[0029] Figure 3 Schematic cross - sectional view of the overall structure of the present utility model;

[0030] Figure 4 Schematic cross - sectional view of the connection structure between the mounting base, lifting base and fixed base in the present utility model;

[0031] Figure 5 Schematic cross - sectional view of the connection structure between the driving roller and the mounting shaft in the present utility model.

[0032] In the figure: 1, support frame; 2, support roller; 3, limit retaining frame; 4, mounting shaft; 5, driving roller; 6, mounting base; 7, cutting base; 8, mounting frame; 9, first electric push rod; 10, cutting tool holder; 11, cutting blade; 12, pressing plate; 13, first spring; 14, first limit telescopic rod; 15, conveying channel; 16, fixed frame; 17, adjustment groove; 18, adjustment column; 19, adjustment knob; 20, fixed base; 21, lifting base; 22, lifting groove; 23, second electric push rod; 24, second spring; 25, second limit telescopic rod; 26, mounting groove; 27, fastener. Detailed implementation manners

[0033] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0034] It should be pointed out that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0035] In the present utility model, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the sake of easy understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms are not used to limit the present utility model.

[0036] Please refer to Figures 1-5, A silicone tube cutting machine for silicone production and processing, including a support frame 1. A plurality of support rollers 2 are rotatably installed on the support frame 1. A plurality of limit brackets 3 are arranged in cooperation with the support rollers 2. A moving and adjusting structure is arranged between the limit brackets 3 and the support frame 1. Among them, the moving and adjusting structure includes a fixed frame 16 arranged on the support frame 1. The fixed frame 16 is located above the limit bracket 3, and an adjusting connection structure is arranged between the fixed frame 16 and the limit bracket 3. The adjusting connection structure includes an adjusting groove 17 opened on the fixed frame 16. An adjusting column 18 is arranged in the adjusting groove 17. The bottom end of the adjusting column 18 is in threaded cooperation with the limit bracket 3, and an adjusting knob 19 is arranged at the top end;

[0037] A conveying channel 15 is formed between two adjacent limit brackets 3. The position of the driving roller 5 matches that of the conveying channel 15;

[0038] In this way, the distance between two adjacent limit brackets 3 can be flexibly adjusted, so that the size of the conveying channel 15 can be adjusted according to the size of the silicone hose;

[0039] When adjusting the size of the conveying channel 15, loosen the adjusting knob 19. Drive the adjusting column 18 to rotate through the adjusting knob 19, so that the adjusting knob 19 is separated from the fixed frame 16, thereby realizing the movement of the adjusting column 18 in the adjusting groove 17. Furthermore, the limit bracket 3 can be moved and adjusted relative to the fixed frame 16. After adjusting to the appropriate position, tighten the adjusting knob 19. Control the adjusting column 18 to rotate through the adjusting knob 19, so that the adjusting column 18 moves inward relative to the limit bracket 3, realizing the locking and fixing of the locking knob on the fixed frame 16, thereby realizing the fixing of the installation position of the limit bracket 3 and the flexible adjustment of the limiting position of the limit bracket 3;

[0040] In the utility model, an installation shaft 4 is arranged at the front end of the fixed frame 16. A driving roller 5 is sleeved on the installation shaft 4. A fastening and adjusting structure is arranged between the driving roller 5 and the installation shaft 4. The fastening and adjusting structure includes an installation groove 26 opened on the driving roller 5. A fastener 27 is arranged in the installation groove 26 in a threaded manner. The inner end of the fastener 27 abuts against the installation shaft 4. In this way, the installation position of the driving roller 5 on the installation shaft 4 can be flexibly adjusted, so that the installation position of the driving roller 5 can be flexibly adjusted according to the adjustment of the conveying channel 15. After adjusting to the appropriate position, tighten the fastener 27, so that the fastener 27 moves inward to squeeze the installation shaft 4, thereby realizing the locking and fixing of the driving roller 5 on the installation shaft 4. Among them, the fastener 27 adopts the embedded and hidden installation in the prior art, which is the existing well-known technology and will not be elaborated in the utility model.

[0041] At both ends of the installation shaft 4 of the present utility model, mounting seats 6 are rotatably arranged through bearings. A lifting and adjusting structure is arranged between the mounting seat 6 and the support frame 1. The lifting and adjusting structure includes a fixed seat 20 arranged on the support frame 1. A lifting seat 21 is arranged on the fixed seat 20 in a liftable manner. A lifting and adjusting component is arranged between the lifting seat 21 and the fixed seat 20. The lifting and adjusting component includes a lifting groove 22 opened on the fixed seat 20. A second electric push rod 23 is arranged in the lifting groove 22. The bottom end of the lifting seat 21 is slidably located in the lifting groove 22 and is connected to the output end of the second electric push rod 23. In this way, during use, the second electric push rod 23 is started. The lifting and adjustment of the lifting seat 21 in the lifting groove 22 can be controlled through the second electric push rod 23. The lifting of the mounting seat 6 can be controlled through the lifting of the lifting seat 21. The lifting of the driving roller 5 can be controlled through the lifting of the mounting seat 6. Thus, the driving position of the driving roller 5 can be flexibly adjusted according to the size of the silicone tube;

[0042] Here, a driving member is arranged on the mounting seat 6 for driving the installation shaft 4 to drive the rotation of the driving roller 5. The driving member can adopt a driving motor;

[0043] Moreover, an elastic connection structure is arranged between the top end of the lifting seat 21 and the mounting seat 6 of the present utility model. The elastic connection structure includes a second spring 24 arranged between the lifting seat 21 and the mounting seat 6, and a second limit telescopic rod 25 is arranged in cooperation with the second spring 24. Through the setting of the second spring 24, the elastic installation of the mounting seat 6 at the top end of the lifting seat can be realized. In this way, while keeping the driving roller 5 in driving contact with the silicone tube, the rigid extrusion between the driving roller 5 and the silicone tube can be avoided, improving the driving flexibility of the silicone tube. The setting of the second limit telescopic rod 25 can improve the installation stability of the mounting seat 6 on the lifting seat 21.

[0044] A cutting seat 7 is arranged at the front end of the support frame 1 of the present utility model. An installation frame 8 is arranged above the cutting seat 7. A first electric push rod 9 is arranged at the bottom end of the installation frame 8. A cutting tool seat 10 is arranged at the bottom end of the first electric push rod 9. A cutting blade 11 is arranged at the bottom end of the cutting tool seat 10. In this way, when cutting the silicone tube, the first electric push rod 9 is started. The lowering of the cutting tool seat 10 can be controlled through the first electric push rod 9. The cutting blade 11 is driven to lower through the cutting tool seat 10, so as to cooperate with the cutting seat 7 to realize the cutting of the silicone tube;

[0045] Here, pressing structures are arranged on both sides of the cutting tool holder 10 in cooperation with the cutting blades 11. The pressing structures include pressing plates 12 arranged on both sides of the cutting blades 11. A first spring 13 is arranged between the pressing plates 12 and the cutting tool holder 10, and a first limiting telescopic rod 14 is arranged in cooperation with the first spring 13. In this way, when the cutting tool holder 10 drives the cutting blades 11 to descend, the pressing plates 12 will be driven to descend synchronously through the first spring 13, so that the pressing plates 12 first contact the silica gel tube, realizing the pressing and fixing of the silica gel tube before cutting, thereby further squeezing the first spring 13 and realizing the cutting of the silica gel tube by the cutting blades 11. Here, the setting of the first limiting telescopic rod 14 can improve the stability of the pressing plates 12 during movement.

[0046] In summary, when the whole device is in use:

[0047] Place the silica gel tubes to be cut into the corresponding conveying channels 15 respectively, and perform movement limiting during the conveying process through the limiting brackets 3;

[0048] Make the tail ends of the silica gel tubes sequentially pass through the driving rollers 5 and the cutting seats 7;

[0049] Control the mounting shaft 4 to drive the driving wheel to rotate through driving parts such as a driving motor, and drive the silica gel tube to move on the supporting rollers 2 through the friction between the driving wheel and the silica gel tube. The setting of the supporting rollers 2 can change the friction during the movement of the silica gel tube from sliding friction to rolling friction, reducing the wear of the silica gel tube during movement;

[0050] When the tail end of the silica gel tube extends to a set length outside the cutting seat 7, stop the rotation of the driving roller 5, start the first electric push rod 9, and control the descent of the cutting tool holder 10 through the first electric push rod 9. Drive the cutting blades 11 to descend through the cutting tool holder 10, so as to cooperate with the cutting seat 7 to realize the cutting of the silica gel tube;

[0051] During this process, when the cutting tool holder 10 drives the cutting blades 11 to descend, the pressing plates 12 will be driven to descend synchronously through the first spring 13, so that the pressing plates 12 first contact the silica gel tube, realizing the pressing and fixing of the silica gel tube before cutting, thereby further squeezing the first spring 13 and realizing the cutting of the silica gel tube by the cutting blades 11. Here, the setting of the first limiting telescopic rod 14 can improve the stability of the pressing plates 12 during movement.

[0052] In all the schemes mentioned above, the connection between two parts can be selected according to the actual situation by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably considered to be welding. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents;

[0053] In all the schemes mentioned above, those involving the operation of electrical components are controlled by the controller unless otherwise clearly described. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all existing well-known and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A silicone tube cutting machine for silicone production and processing, including a support frame (1), characterized in that: A plurality of support rollers (2) are rotatably mounted on the support frame (1). A plurality of limit retaining frames (3) are arranged in cooperation with the support rollers (2). A moving and adjusting structure is arranged between the limit retaining frame (3) and the support frame (1). An installation shaft (4) is arranged at the front end of the support frame (1). A driving roller (5) is sleeved on the installation shaft (4). A fastening and adjusting structure is arranged between the driving roller (5) and the installation shaft (4). Both ends of the installation shaft (4) are rotatably provided with installation seats (6) through bearings. A lifting and adjusting structure is arranged between the installation seat (6) and the support frame (1). A cutting seat (7) is arranged at the front end of the support frame (1). An installation frame (8) is arranged above the cutting seat (7). A first electric push rod (9) is arranged at the bottom end of the installation frame (8). A cutting tool seat (10) is arranged at the bottom end of the first electric push rod (9). A cutting blade (11) is arranged at the bottom end of the cutting tool seat (10). A pressing structure is arranged on both sides of the cutting tool seat (10) in cooperation with the cutting blade (11).

2. The silicone tube cutting machine for silicone production and processing according to claim 1, wherein: The pressing structure includes pressing plates (12) arranged on both sides of the cutting blade (11). A first spring (13) is arranged between the pressing plate (12) and the cutting tool seat (10), and a first limit telescopic rod (14) is arranged in cooperation with the first spring (13).

3. A silicone tube cutting machine for silicone production and processing according to claim 1, characterized in that: A conveying channel (15) is formed between two adjacent limit retaining frames (3). The position of the driving roller (5) matches that of the conveying channel (15).

4. A silicone tube cutting machine for silicone production and processing according to claim 3, characterized in that: The moving and adjusting structure includes a fixed frame (16) arranged on the support frame (1). The fixed frame (16) is located above the limit retaining frame (3), and an adjusting connection structure is arranged between the fixed frame (16) and the limit retaining frame (3).

5. A silicone tube cutting machine for silicone production and processing according to claim 4, characterized in that: The adjusting connection structure includes an adjusting groove (17) opened on the fixed frame (16). An adjusting column (18) is arranged in the adjusting groove (17). The bottom end of the adjusting column (18) is in threaded cooperation with the limit retaining frame (3), and an adjusting knob (19) is arranged at the top end.

6. A silicone tube cutting machine for silicone production and processing according to any one of claims 1-5, characterized in that: The lifting and adjusting structure includes a fixed seat (20) arranged on the support frame (1). A lifting seat (21) is arranged on the fixed seat (20) in a liftable manner. A lifting and adjusting component is arranged between the lifting seat (21) and the fixed seat (20), and an elastic connection structure is arranged between the top end of the lifting seat (21) and the installation seat (6).

7. A silicone tube cutting machine for silicone production and processing according to claim 6, characterized in that: The lifting and adjusting component includes a lifting groove (22) opened on the fixed seat (20). A second electric push rod (23) is arranged in the lifting groove (22). The bottom end of the lifting seat (21) is slidably located in the lifting groove (22) and is connected to the output end of the second electric push rod (23).

8. A silicone tube cutting machine for silicone production and processing according to claim 6, characterized in that: The elastic connection structure includes a second spring (24) arranged between the lifting seat (21) and the installation seat (6), and a second limit telescopic rod (25) is arranged in cooperation with the second spring (24).

9. The silicone tube cutting machine for silicone production and processing according to claim 1, wherein: The fastening and adjusting structure includes a mounting groove (26) formed in the driving roller (5), a fastener (27) is provided with internal threads in the mounting groove (26), and the inner end of the fastener (27) abuts against the mounting shaft (4).

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