Sewing mechanism for automobile foot mat processing

Abstract

The utility model belongs to the technical field of automobile foot mat processing, and particularly relates to a sewing mechanism for automobile foot mat processing, which comprises a processing platform. The top of the machining platform is fixedly connected with a first fixing base. The top of the first fixing seat is fixedly connected with a sewing assembly; a pair of limiting sliding columns is connected into the machining platform in a sliding mode. One end of the limiting sliding column is fixedly connected with an expansion side plate; the top of the machining platform is rotationally connected with a first conveying roller. In the working process, after the extension side plate moves, a first gear column can be inserted into the inner side of a first conveying roller through a first connecting column, the first conveying roller can be driven to rotate by rotating the first connecting column, and a second conveying belt, a second conveying roller and a first conveying soft wheel are matched with each other; the first conveying roller and the first conveying soft wheel can push the automobile foot mat on the top of the machining platform to move to the bottom of the sewing assembly, and the automobile foot mat can be machined by operating the sewing assembly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the automobile foot pad processing technical field, specifically a kind of sewing mechanism for automobile foot pad processing. BACKGROUND

[0002] During the processing of automobile foot pad, in order to adapt to the processing technology of foot pad of different shapes, different types of sewing machine mechanisms are often used, and the quality and appearance of automobile foot pad can be effectively improved by using sewing mechanism.

[0003] At present, in the prior art, the sewing mechanism for automobile foot pad processing is usually composed of a processing platform and a sewing assembly. After placing the automobile foot pad to be processed on the top of the processing platform, the sewing assembly can be started to process the foot pad.

[0004] The existing sewing mechanism for automobile foot pad processing has the following problems in work: because the sizes of different automobile foot pads are different, it is difficult to process automobile foot pads of various sizes using the same sewing device, thereby reducing the versatility of the sewing device. Therefore, a sewing mechanism for automobile foot pad processing is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the prior art and solve at least one technical problem proposed in the background art, the utility model provides a sewing mechanism for automobile foot pad processing.

[0006] The utility model solves its technical problem adopts the technical scheme that a kind of sewing mechanism is used in the utility model, including processing platform;The first fixed seat is fixedly connected on the top of processing platform;The sewing assembly is fixedly connected on the top of the first fixed seat;A pair of limit sliding columns are slidably connected inside the processing platform;The expansion side plate is fixedly connected on the one end of the limit sliding column;The first conveying roller is rotatably connected on the top of the processing platform;The limit expansion column is slidably connected on the side wall of the processing platform away from the limit sliding column;The first gear column is rotatably connected on the one end of the limit expansion column close to the first conveying roller;The clamping block is fixedly connected on the one end of the first gear column close to the first conveying roller;The clamping block can slide inside the first conveying roller;The first connecting column is fixedly connected on the one end of the first gear column away from the storage groove;The expansion groove is formed on the side of the processing platform close to the first connecting column;The second gear column is rotatably connected on the side wall of the processing platform close to the first connecting column;The first transmission belt is rotatably connected inside the expansion groove;The inner side wall of the first transmission belt and the outer side wall of the second gear column are mutually attached;A pair of the third gear column is rotatably connected on the inner side wall of the expansion groove;The outer side wall of the third gear column and the inner side wall of the expansion groove are mutually attached;The rack is slidably connected on the inner bottom of the expansion groove;The rack and the third gear column are mutually engaged;The one end of the rack close to the limit sliding column and the side wall of expansion side plate are mutually connected;A pair of the second conveying roller is rotatably connected on the side wall of the processing platform close to the first connecting column;The second transmission belt is rotatably connected on the outer side wall of the second conveying roller;The inner side wall of the second transmission belt and the outer side wall of the first conveying roller are mutually attached;A plurality of the first conveying soft wheel is fixedly connected on the outer side wall of the second conveying roller.

[0007] Preferably, the side wall of the processing platform close to the first connecting column is fixedly connected with a fixed rotating seat;The rotating plate is connected with the outer side wall of the fixed rotating seat;The knocking response column is fixedly connected on the top and bottom of the rotating plate;The second connecting column is fixedly connected on the one end of the second gear column away from the first connecting column;A plurality of extrusion columns is fixedly connected on the outer side wall of the second connecting column;A pair of knocking columns is fixedly connected on the side wall of the processing platform close to the second connecting column;A pair of the knocking columns is arranged above and below the rotating plate.

[0008] Preferably, the side wall of the processing platform is fixedly connected with a second fixed seat;The first rotating column is rotatably connected on the side wall of the second fixed seat;The second rotating column is rotatably connected on the one end of the first rotating column away from the second fixed seat;A plurality of the second conveying soft wheel is fixedly connected on the outer side wall of the second rotating column;A pair of the second conveying roller is fixedly connected on the outer side wall and is engaged with a pair of bevel gears;The two ends of the second rotating column are mutually engaged with a pair of bevel gears.

[0009] Preferably, the bottom of the processing platform is fixedly connected with a pair of limit sleeve columns away from the first connecting column;The support column is slidably connected inside the limit sleeve column;The support column is connected with the bottom of the expansion side plate away from the limit sleeve column.

[0010] Preferably, the first gear column is provided with a pair of placement grooves near one end of the first conveying roller; a matching rotating wheel is rotatably connected to the inner side of the placement grooves.

[0011] Preferably, the inner side wall of the expansion groove is rotatably connected to a pair of fourth gear columns; the outer side wall of the fourth gear column is matched with the inner side wall of the first transmission belt; the fourth gear column is meshed with the rack.

[0012] Preferably, the first connecting column is fixedly connected to an operating disc at the end away from the clamping block.

[0013] The utility model discloses the beneficial effect:

[0014] 1. The utility model provides a sewing mechanism for automobile foot pad processing, first gear column drives a plurality of third gear columns to rotate through second gear column and first transmission belt, and because third gear column is meshed with rack, thereby makes expansion side plate move to outside through limit slide pillar, reaches the effect that limit slide pillar moves, finally changes the size of processing platform processing platform, thereby improved the adaptability that first fixed seat and sewing assembly processed automobile foot pad, and effectively improved the versatility of whole device, improved the efficiency that sewing assembly processed a variety of size automobile foot pad, when expansion side plate moves to completion, can through first connecting column and insert first gear column in first conveying roller inner side, through rotating first connecting column, can drive first conveying roller to rotate, through the cooperation of second transmission belt, second conveying roller and first conveying soft wheel, first conveying roller and first conveying soft wheel can push automobile foot pad on the top of processing platform and move to the bottom of sewing assembly, and operating sewing assembly can process automobile foot pad.

[0015] 2. The utility model provides a sewing mechanism for automobile foot pad processing, in the process of rotating second gear column, drives a plurality of extrusion columns to rotate through second connecting column, in the process of rotating extrusion column, can extrude rotating plate, so that knock column collides with knock response column, emits the sound, realizes the warning effect to outside, whole device reduces the situation that expansion side plate collides with staff in the process of moving. ACCURACY OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitations on the utility model. In the drawings:

[0017] Figure 1 It is the processing platform perspective drawing of the utility model;

[0018] Figure 2 It is the perspective drawing of expansion side plate in the utility model;

[0019] Figure 3 is a perspective view of the sewing assembly in the utility model;

[0020] Figure 4 is Figure 3 an enlarged view of A of

[0021] Figure 5 is a perspective view of the first conveying soft wheel in the utility model;

[0022] Figure 6 is Figure 5 an enlarged view of B of

[0023] Legend:

[0024] 1, processing platform; 11, first fixed seat; 12, sewing assembly; 13, limiting slide column; 14, expansion side plate; 15, first conveying roller; 16, limiting telescopic column; 17, first gear column; 18, clamping block; 19, first connecting column; 110, expansion groove; 111, second gear column; 112, first transmission belt; 113, third gear column; 114, rack; 115, second conveying roller; 116, second transmission belt; 117, first conveying soft wheel; 2, fixed rotating seat; 21, rotating plate; 22, knocking response column; 23, second connecting column; 24, extrusion column; 25, knocking column; 3, second fixed seat; 31, first rotating column; 32, second rotating column; 33, second conveying soft wheel; 34, bevel gear; 4, limiting sleeve column; 41, supporting column; 5, storage groove; 51, fit rotating wheel; 6, fourth gear column; 7, operation disc. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Specific embodiments are given below.

[0027] Please refer to Figures 1-6The utility model provides a kind of sewing mechanism for automobile foot mat processing, including processing platform 1;The top of processing platform 1 is fixedly connected with first fixed seat 11;The top of first fixed seat 11 is fixedly connected with sewing assembly 12;A pair of limit sliding columns 13 are slidably connected in the inside of processing platform 1;The one end of limit sliding column 13 is fixedly connected with expansion side plate 14;The top of processing platform 1 is rotatably connected with first conveying roller 15;The side wall of the side of processing platform 1 away from limit sliding column 13 is slidably connected with limit telescopic column 16;The one end of limit telescopic column 16 close to first conveying roller 15 is rotatably connected with first gear column 17;The one end of first gear column 17 close to first conveying roller 15 is fixedly connected with clamping block 18;Clamping block 18 can slide inside first conveying roller 15;The one end of first gear column 17 away from storage groove 5 is fixedly connected with first connecting column 19;Expansion groove 110 is arranged in the side of processing platform 1 close to first connecting column 19;The side wall of the side of processing platform 1 close to first connecting column 19 is rotatably connected with second gear column 111;First transmission belt 112 is rotatably connected inside expansion groove 110;The inner side wall of first transmission belt 112 and the outer side wall of second gear column 111 are mutually attached;A pair of third gear columns 113 are rotatably connected to the inner side wall of expansion groove 110;The outer side wall of third gear column 113 and the inner side wall of expansion groove 110 are mutually attached;Rack 114 is slidably connected to the inner bottom of expansion groove 110;Rack 114 and third gear column 113 are mutually engaged;The one end of rack 114 close to limit sliding column 13 and the side wall of expansion side plate 14 are mutually connected;A pair of second conveying rollers 115 are rotatably connected to the side wall of the side of processing platform 1 close to first connecting column 19;Second transmission belt 116 is rotatably connected to the outer side wall of second conveying roller 115;The inner side wall of second transmission belt 116 and the outer side wall of first conveying roller 15 are mutually attached;A plurality of first conveying soft wheels 117 are fixedly connected to the outer side wall of second conveying roller 115;When working, first conveying soft wheel 117 is elastic material, when needing to adapt to automobile foot mat of different sizes, clamping block 18 is pulled out from the inside of first conveying roller 15, limit telescopic column 16 can drive first gear column 17 to move outward, finally first gear column 17 and second gear column 111 are mutually engaged, by rotating first connecting column 19, first gear column 17 drives first transmission belt 112 to drive multiple third gear columns 113 to rotate through second gear column 111, and because third gear column 113 and rack 114 are mutually engaged, so that expansion side plate 14 moves outward through limit sliding column 13, reach the effect that limit sliding column 13 moves, finally change the size of processing platform 1 processing platform, thereby improve the adaptability of first fixed seat 11 and sewing assembly 12 to automobile foot mat processing, and effectively improve the overall device versatility;Improve the efficiency of sewing assembly 12 to process automobile foot mat of multiple sizes;When the extension side plate 14 moves to the end, the first gear column 17 can be inserted into the inside of the first conveying roller 15 through the first connecting column 19, and the first conveying roller 15 can be driven to rotate by rotating the first connecting column 19. Through the cooperation of the second transmission belt 116, the second conveying roller 115 and the first conveying soft wheel 117, the first conveying roller 15 and the first conveying soft wheel 117 can push the automobile foot mat on the top of the processing platform 1 to move to the bottom of the sewing assembly 12, and the automobile foot mat can be processed by operating the sewing assembly 12.

[0028] Further, as shown in Figure 4 and Figure 6 , the fixed rotating seat 2 is fixedly connected to the side wall of the processing platform 1 close to the first connecting column 19; the rotating plate 21 is connected to the outer side wall of the fixed rotating seat 2; the knocking column 22 is fixedly connected to the top and the bottom of the rotating plate 21; the second connecting column 23 is fixedly connected to the end of the second gear column 111 away from the first connecting column 19; a plurality of extrusion columns 24 are fixedly connected to the outer side wall of the second connecting column 23; a pair of knocking columns 25 are fixedly connected to the side wall of the processing platform 1 close to the second connecting column 23; the pair of knocking columns 25 are arranged above and below the rotating plate 21; during the rotation of the second gear column 111, the plurality of extrusion columns 24 are driven to rotate by the second connecting column 23, and the rotating plate 21 is extruded during the rotation of the extrusion column 24, so that the knocking column 25 collides with the knocking column 22 to produce sound and achieve the warning effect to the outside; the whole device reduces the collision between the extension side plate 14 and the workers during the movement of the extension side plate 14.

[0029] Further, as shown in Figure 3As shown, the processing platform 1 side wall is fixed with a second fixed seat 3; one side of the second fixed seat 3 is rotatably connected with a first rotating column 31; the first rotating column 31 is rotatably connected with a second rotating column 32 away from one end of the second fixed seat 3; a plurality of second conveying soft wheels 33 are fixed to the outer side wall of the second rotating column 32; a pair of second conveying rollers 115 are rotatably connected with a pair of bevel gears 34; the two ends of the second rotating column 32 are rotatably connected with a pair of bevel gears 34; during operation, the outer surface of the second conveying soft wheel 33 is made of elastic material; during the rotation of the first conveying roller 15 driven by rotating the first connecting column 19, the second conveying roller 115 is driven to rotate together with the first conveying soft wheel 117 by the second transmission belt 116, so that the second conveying soft wheel 33 is driven to rotate together by the cooperation of the bevel gear 34 and the second rotating column 32, and the outer side wall of the second conveying soft wheel 33 can be in close contact with the top of the car mat, and the second conveying soft wheel 33 in rotation can flatten the folded car mat outward, improving the stability of the car mat during processing; and during the rotation of the second conveying roller 115, the other side of the second conveying roller 115 can be driven to rotate together by the second rotating column 32, improving the stability of the car mat when it is discharged outward after processing.

[0030] Further, as shown in Figure 2 The bottom of the processing platform 1 is fixed with a pair of limiting sleeve columns 4 away from one end of the first connecting column 19; the inner side of the limiting sleeve column 4 is slidably connected with a supporting column 41; the bottom of the supporting column 41 is connected with the expansion side plate 14; during operation, the limiting sleeve column 4 cooperates with the supporting column 41 to support the bottom of the moving expansion side plate 14, thereby improving the stability of the expansion side plate 14 during long-term operation and reducing the load at the connection between the limiting slide column 13 and the processing platform 1; and the working life of the limiting slide column 13 and the processing platform 1 is improved.

[0031] Further, as shown in Figure 6 The first gear column 17 is provided with a pair of storage grooves 5 near one end of the first conveying roller 15; the inner side of the storage groove 5 is rotatably connected with a matching rotating wheel 51; during operation, the matching rotating wheel 51 rotates as the clamping block 18 enters the inner side of the first conveying roller 15, thereby effectively reducing the wear between the clamping block 18 and the first conveying roller 15, thereby improving the stability of the first conveying roller 15 and the clamping block 18 during long-term operation.

[0032] Further, as shown in Figure 5As shown, the inner side wall of the expansion groove 110 is rotationally connected with a pair of fourth gear columns 6; the outer side wall of the fourth gear column 6 is in mutual adhesion with the inner side wall of the first transmission belt 112; the fourth gear column 6 is in mutual engagement with the rack 114; in working time, in the rotating process of the first transmission belt 112, the pair of fourth gear columns 6 can support the middle part of the first transmission belt 112, thereby improving the stability of the first transmission belt 112 in long time working; and the first transmission belt 112 can drive the fourth gear column 6 to rotate together, and because the fourth gear column 6 is in mutual engagement with the rack 114, the rack 114 is driven to move, and the overall device improves the stability of the rack 114 in long time working.

[0033] Further, as shown in the figure, Figure 6 As shown, the first connecting column 19 is fixedly connected with the operation disc 7 at one end away from the clamping block 18; in working time, the staff can drive the first connecting column 19 to rotate together by operating the operation disc 7, thereby improving the stability and simplicity in rotating the first connecting column 19.

[0034] Working principle: when working, the first conveying soft wheel 117 is made of elastic material, when it is necessary to adapt to different sizes of automobile foot pads, the clamping block 18 is pulled out from the inner side of the first conveying roller 15, the limiting telescopic column 16 can drive the first gear column 17 to move outward, finally the first gear column 17 and the second gear column 111 are engaged with each other, by rotating the first connecting column 19, the first gear column 17 drives the first transmission belt 112 to drive multiple third gear columns 113 to rotate through the second gear column 111, and because the third gear column 113 and the rack 114 are engaged with each other, the expansion side plate 14 moves outward through the limiting slide column 13, the effect of adjusting the movement of the limiting slide column 13 is achieved, finally the size of the processing platform 1 is changed, thereby improving the adaptability of the first fixed seat 11 and the sewing assembly 12 to the automobile foot pad processing, and effectively improving the overall device versatility; improving the efficiency of the sewing assembly 12 to process automobile foot pads of various sizes; after the expansion side plate 14 is moved, the first gear column 17 can be inserted into the first conveying roller 15 through the first connecting column 19, by rotating the first connecting column 19, the first conveying roller 15 can be driven to rotate, and the first conveying roller 15 and the first conveying soft wheel 117 can drive the automobile foot pad on the top of the processing platform 1 to move to the bottom of the sewing assembly 12 through the cooperation of the second transmission belt 116, the second conveying roller 115 and the first conveying soft wheel 117, and the automobile foot pad can be processed by operating the sewing assembly 12; when working, the second gear column 111 rotates, a plurality of extrusion columns 24 are driven to rotate through the second connecting column 23, the rotating process of the extrusion column 24 can extrude the rotating plate 21, so that the knocking column 25 collides with the knocking sound column 22, sounds are emitted, and the warning effect on the outside is realized; the overall device reduces the collision between the expansion side plate 14 and the staff during movement; the outer surface of the second conveying soft wheel 33 is made of elastic material; during the process of driving the first conveying roller 15 to rotate by rotating the first connecting column 19, the second conveying roller 115 and the first conveying soft wheel 117 are driven to rotate together through the second transmission belt 116, so that the second conveying soft wheel 33 is driven to rotate together through the bevel gear 34 and the second rotating column 32, the outer side wall of the second conveying soft wheel 33 can be attached to the top of the automobile foot pad on the top of the processing platform 1, the second conveying soft wheel 33 in rotation can flatten the folded automobile foot pad outward, improving the stability of the automobile foot pad during processing; during the rotation of the second conveying roller 115, the other side of the second conveying roller 115 can be driven to rotate together through the second rotating column 32, improving the stability of the automobile foot pad when it is discharged outward after processing; the limiting sleeve column 4 and the supporting column 41 cooperate with each other to support the bottom of the moving expansion side plate 14, thereby improving the stability of the expansion side plate 14 during long-term work, and reducing the load at the connecting part of the limiting slide column 13 and the processing platform 1; improving the working life of the limiting slide column 13 and the processing platform 1;The fitting rotating wheel 51 rotates along with the card block 18 entering the inside of the first conveying roller 15, the fitting rotating wheel 51 can effectively reduce the abrasion between the card block 18 and the first conveying roller 15, thereby improving the stability of the first conveying roller 15 and the card block 18 during long time working; the pair of fourth gear columns 6 can support the middle part of the first transmission belt 112 during the rotation of the first transmission belt 112, thereby improving the stability of the first transmission belt 112 during long time working; the first transmission belt 112 can drive the fourth gear column 6 to rotate, and the fourth gear column 6 is meshed with the rack 114, thereby driving the rack 114 to move, the overall device improves the stability of the rack 114 during long time working; the operator can drive the first connecting column 19 to rotate by operating the operation disc 7, thereby improving the stability and simplicity of the first connecting column 19 during rotation.

[0035] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A sewing mechanism for processing automobile foot mat, comprising a processing platform (1); characterized in that: The processing platform (1) top fixed with first fixed seat (11), the first fixed seat (11) top fixed with sewing assembly (12), the processing platform (1) inside sliding connection has a pair of limit slide column (13), limit slide column (13) one end fixed with expansion side plate (14), the processing platform (1) top rotationally connected with first conveying roller (15), the processing platform (1) is away from limit slide column (13) one side wall sliding connection has limit telescopic column (16), limit telescopic column (16) is close to first conveying roller (15) one end rotationally connected with first gear column (17), first gear column (17) is close to first conveying roller (15) one end fixed with clamping block (18), the clamping block (18) can slide in the inside of first conveying roller (15), first gear column (17) is away from the one end fixed with first connecting column (19) of article placing groove (5), the processing platform (1) is close to first connecting column (19) one side and is provided with expansion slot (110), the processing platform (1) is close to first connecting column (19) one side wall rotationally connected with second gear column (111), expansion slot (110) inside rotationally connected with first transmission belt (112), first transmission belt (112) inside wall and second gear column (111) outside wall mutually fit, expansion slot (110) inside wall rotationally connected with a pair of third gear column (113), third gear column (113) outside wall and expansion slot (110) inside wall mutually fit, expansion slot (110) inside bottom sliding connection has rack (114), rack (114) and third gear column (113) are mutually engaged, rack (114) is close to limit slide column (13) one end and expansion side plate (14) one side wall is mutually connected, the processing platform (1) is close to first connecting column (19) one side wall rotationally connected with a pair of second conveying roller (115), second conveying roller (115) outside wall rotationally connected with second transmission belt (116), second transmission belt (116) inside wall and first conveying roller (15) outside wall mutually fit, second conveying roller (115) outside wall fixed with a plurality of first conveying soft wheel (117).

2. The sewing mechanism for processing automobile floor mat according to claim 1, wherein: The processing platform (1) is close to first connecting column (19) one side wall fixed with fixed rotary seat (2), the fixed rotary seat (2) outside wall fixedly connected with rotary plate (21), the rotary plate (21) top and bottom are all fixedly connected with knock response column (22), the second gear column (111) is away from first connecting column (19) one end fixed with second connecting column (23), the second connecting column (23) outside wall fixedly connected with a plurality of extrusion column (24), the processing platform (1) is close to second connecting column (23) one side wall fixedly connected with a pair of knock column (25), a pair of knock column (25) is located above and below rotary plate (21).

3. The sewing mechanism for processing automobile floor mat according to claim 1, wherein: The side wall of the processing platform (1) is fixed with a second fixing seat (3); one side wall of the second fixing seat (3) is rotatably connected with a first rotating column (31); one end of the first rotating column (31) away from the second fixing seat (3) is rotatably connected with a second rotating column (32); the outer side wall of the second rotating column (32) is fixed with a plurality of groups of second conveying soft wheels (33); the outer side wall of a pair of second conveying rollers (115) is fixed with a bevel gear (34); and the two ends of the second rotating column (32) are meshed with a pair of bevel gears (34).

4. The sewing mechanism for processing automobile floor mat according to claim 1, wherein: The bottom of the processing platform (1) is fixed with a pair of limiting sleeve columns (4) away from one end of the first connecting column (19); the inner side of the limiting sleeve column (4) is slidably connected with a supporting column (41); and the end of the supporting column (41) away from the limiting sleeve column (4) is connected with the bottom of the expansion side plate (14).

5. The sewing mechanism for processing automobile floor mat according to claim 1, wherein: The first gear column (17) is provided with a pair of placing grooves (5) near one end of the first conveying roller (15); the inner side of the placing groove (5) is rotatably connected with a matching rotating wheel (51).

6. The sewing mechanism for processing automobile floor mat according to claim 1, wherein: The inner side wall of the expansion groove (110) is rotatably connected with a pair of fourth gear columns (6); the outer side wall of the fourth gear column (6) is matched with the inner side wall of the first transmission belt (112); and the fourth gear column (6) is meshed with the rack (114).

7. The sewing mechanism for processing automobile floor mat according to claim 1, wherein: The first connecting column (19) is fixed with an operation disc (7) away from the clamping block (18).

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