CN216227690U

CN216227690U - Automatic welding device

Info

Publication number: CN216227690U
Application number: CN202122725897.2U
Authority: CN
Inventors: 张锦权; 马德胜; 吴冈儒
Original assignee: Shanghai Junzheng Mechanical Equipment Co ltd
Current assignee: Shanghai Junzheng Mechanical Equipment Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-08
Anticipated expiration: 2031-11-09

Abstract

The application relates to the technical field of aluminum roller processing, in particular to an automatic welding device, which comprises a welding gun for welding the joint of an aluminum roller and a choke plug, a base and supports arranged at two ends of the base, wherein the supports are respectively and rotatably provided with chucks which are coaxial, the aluminum roller is horizontally clamped between the two chucks, one of the supports is provided with a motor for driving the aluminum roller to rotate, and the motor is connected with the corresponding chuck; the support is also provided with an adjusting mechanism for adjusting the position of the welding gun, the welding gun is installed on the support through the adjusting mechanism, and the gun nozzle of the welding gun is located at the joint of the end part of the aluminum roller and the choke plug. This application has when the aluminium roller along self axis at the uniform velocity after rotating a week, and welder accomplishes the welding jobs of aluminium roller and vexed head seam crossing, has improved because of the problem that manual welding leads to the uneven and inhomogeneous influence aluminium roller quality of welding seam.

Description

Automatic welding device

Technical Field

The application relates to the technical field of aluminum roller processing, in particular to an automatic welding device.

Background

The aluminum roller has the characteristics of high strength, small resistance, light weight, flexible rotation, no rustiness, wear resistance, corrosion resistance and the like, and is suitable for precision machinery industries such as printing, packaging, plastic, electronic batteries and the like and various coiled material processing industries. The aluminum roller comprises a hollow roller body and choke plugs fixedly arranged at two ends of the roller body, wherein shaft heads are coaxially fixed on the choke plugs and used for connecting the roller body to the rack; one of the rings in the processing process of the aluminum roller is to weld the choke plug and the roller body of the aluminum roller mutually, the welding step is generally to perform spot welding fixation firstly, and then weld the junction of the choke plug and the aluminum roller after confirming that the installation position is correct, and the welding method is generally adopted to perform manual welding by an operator holding a self-feeding wire-feeding welding gun.

In view of the above-mentioned related art, the inventors believe that the welded seam of manual welding is uneven and uneven, and may affect the quality of the welded seam, and thus the quality of the aluminum roll.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that manual welding leads to the welding seam uneven and inhomogeneous, probably influences aluminium roller quality, the application provides an automatic welding device.

The application provides an automatic welding device adopts following technical scheme:

an automatic welding device comprises a welding gun for welding a seam between an aluminum roller and a choke plug, a base and supports arranged at two ends of the base, wherein the supports are respectively and rotatably provided with chucks, the two chucks are coaxial, the aluminum roller is horizontally clamped between the two chucks, one support is provided with a motor for driving the aluminum roller to rotate, and the motor is connected with the corresponding chuck; the support is also provided with an adjusting mechanism for adjusting the position of the welding gun, the welding gun is installed on the support through the adjusting mechanism, and the gun nozzle of the welding gun is located at the joint of the end part of the aluminum roller and the choke plug.

Through adopting above-mentioned technical scheme for driving motor drives and is carried out the rotation along self axis by the aluminium roller of centre gripping between the chuck, and after aluminium roller uniform velocity rotated a week, welder accomplished the welding operation of aluminium roller tip and bulkhead seam crossing, and the welding seam is even, has improved because of manual welding leads to the uneven and inhomogeneous problem that influences the aluminium roller quality of welding seam.

Optionally, the number of the welding guns is two, the number of the adjusting mechanisms is also two, each welding gun is arranged on the corresponding support through the corresponding adjusting mechanism, and the gun nozzle of each welding gun is located at the seam between the end of the corresponding aluminum roller and the bulkhead.

Through adopting above-mentioned technical scheme for the both ends of aluminium roller can carry out welding operation simultaneously, improve welding efficiency.

Optionally, the adjusting mechanism includes a lifting portion for adjusting the height of the welding gun, the lifting portion includes an adjusting screw and an adjusting slider, the adjusting screw is rotatably connected to the support, the adjusting screw is arranged on the adjusting slider in a penetrating manner, the adjusting screw is in threaded connection with the adjusting slider, the adjusting slider is connected to the support in a sliding manner along the radial direction of the aluminum roller, and the welding gun moves synchronously along with the movement of the adjusting slider.

Through adopting above-mentioned technical scheme, it is rotatory to drive adjusting screw through rotating adjusting hand wheel, and then drives adjusting block and reciprocate along vertical direction in the adjustment tank, and then has realized the altitude mixture control of butt welder, adapts to the welding requirement of the aluminium roller of different diameters, reinforcing practicality.

Optionally, the adjusting mechanism includes a telescopic portion for adjusting a horizontal distance between a welding gun nozzle and the aluminum roller, the telescopic portion includes an adjusting cylinder, the adjusting cylinder is disposed on one side of the support, the adjusting cylinder extends and retracts along an axial direction of the chuck, and the welding gun moves synchronously along with movement of a power rod of the adjusting cylinder.

Through adopting above-mentioned technical scheme, through the extension or the shortening of operation adjusting cylinder, drive welder and remove along the axis direction of chuck, adapt to the welding requirement of the aluminium roller of different spindle nose lengths, reinforcing practicality.

Optionally, the adjusting mechanism includes a clamping portion for facilitating detachment of the welding gun, the clamping portion includes two clamping blocks and a locking screw, one of the two clamping blocks is disposed on one side of the bracket, the welding gun is disposed between the two clamping blocks, and the two clamping blocks are detachably connected through the locking screw.

Through adopting above-mentioned technical scheme, fixed and finely tune welder's position through the mode of centre gripping makes welder convenient to detach, is convenient for change and maintenance.

Optionally, a rack is arranged on the side wall of the base along the length direction of the base, the bottom of the bracket far away from the motor is connected to the base in a sliding manner, a gear is rotatably arranged on the outer wall of the bottom of the bracket far away from the motor, and the gear is meshed with the rack; and a sliding hand wheel is coaxially arranged at one end of the gear, which is far away from the support.

Through adopting above-mentioned technical scheme for the support of keeping away from the motor can slide on the base, is convenient for change the distance between two supports, and it is more convenient to make the aluminium roller centre gripping operate when in the chuck, also can be applicable to the aluminium roller of different length simultaneously, strengthens the practicality.

Optionally, wear to be equipped with the gag lever post on the hand wheel that slides, the axis of gag lever post is on a parallel with the rotation axis of the hand wheel that slides, self axis direction sliding connection in the hand wheel that slides is followed to the gag lever post, the spacing groove has been seted up along base length direction to the lateral wall of base, the tip that the gag lever post is close to the base is in the spacing groove along the axis direction sliding connection of gag lever post.

By adopting the technical scheme, the limiting rod cannot rotate continuously along with the sliding hand wheel by arranging the limiting groove, so that the sliding of the support is limited; the support far away from the motor is convenient to fix after sliding, and the probability that the aluminum roller rotates to cause the movable support to displace and further influence welding operation is reduced.

Optionally, be provided with the collet that is used for supporting the aluminium roller on the base, the collet is located between two supports, the collet is including the seat of sliding, vertical setting at the flexible hydro-cylinder on the seat top of sliding and the convex board of setting on flexible hydro-cylinder top, the seat of sliding is along base length direction sliding connection on the base.

Through adopting above-mentioned technical scheme for the collet is convenient for shift position and is convenient for adjust the height of circular arc, when carrying out the welding jobs of aluminium roller tip and vexed head, adjusts to the position of being convenient for to lift the aluminium roller through adjusting the seat that slides, again with aluminium roller transfer to the collet on, start flexible hydro-cylinder and lift the aluminium roller, make the spindle nose at aluminium roller both ends coaxial chuck that corresponds both sides respectively, realize one-man operation welding jobs.

In summary, the present application includes at least one of the following beneficial technical effects:

after the aluminum roller rotates for a circle along the self axis at a constant speed, the welding gun finishes the welding operation of the joint between the aluminum roller and the choke plug, thereby solving the problems of uneven and uneven welding seams caused by manual welding and influencing the quality of the aluminum roller;

the height of the welding gun can be adjusted, the welding requirements of aluminum rollers with different diameters are met, and the practicability is enhanced;

the welding gun can move back and forth along the axis direction of the chuck, the welding requirements of aluminum rollers with different shaft head lengths are met, and the practicability is enhanced.

Drawings

Fig. 1 is a perspective view of an automatic welding apparatus according to an embodiment of the present application.

Fig. 2 is a sectional view of a fixing bracket of an automatic soldering apparatus according to an embodiment of the present application.

Fig. 3 is an exploded view of a clamping portion of an automatic welding device according to an embodiment of the present application.

Fig. 4 is a sectional view of a slide portion and a stopper portion of an automatic soldering apparatus according to an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a shoe of an automatic welding device according to an embodiment of the present application.

Description of reference numerals: 1. a base; 2. a support; 3. a welding gun; 4. fixing a bracket; 5. moving the support; 6. a slide rail; 7. a chuck; 8. a bottom support; 9. an adjustment mechanism; 10. a motor; 11. a main shaft; 12. a lifting part; 13. adjusting the screw rod; 14. adjusting the sliding block; 15. an adjustment groove; 16. adjusting a hand wheel; 17. a telescopic part; 18. adjusting the oil cylinder; 19. a clamping portion; 20. a connecting rod; 21. a clamping block; 22. locking the screw; 23. a groove; 24. a sliding part; 25. a rack; 26. a gear; 27. a sliding hand wheel; 28. a square groove; 29. a rotating shaft; 31. a limiting part; 32. a limiting rod; 33. a spring; 34. a limiting groove; 35. a baffle plate; 36. a sliding seat; 37. a telescopic oil cylinder; 38. a circular arc plate; 39. and a roller.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses an automatic welding device, and with reference to fig. 1, the automatic welding device comprises a base 1, supports 2 arranged at two ends of the base 1 and a welding gun 3 for welding, wherein each support 2 comprises a fixed support 4 and a movable support 5, the lower surface of each fixed support 4 is fixedly arranged on the base 1, two sliding rails 6 are fixedly arranged on the upper surface of the base 1, each sliding rail 6 extends along the length direction of the base 1, and the lower surface of each movable support 5 is slidably connected with the two sliding rails 6, so that the movable supports 5 slide back and forth along the length direction of the base 1; chucks 7 are respectively and rotatably arranged on the vertical walls of the fixed support 4 and the movable support 5, the two chucks 7 are coaxial, and the aluminum roller is horizontally clamped between the two chucks 7; still be provided with the collet 8 that is used for supporting the aluminium roller on the base 1, collet 8 and two slide rail 6 sliding connection for collet 8 makes a round trip to slide along 1 length direction of base, and the quantity of collet 8 sets up to two, and collet 8 is located between fixed bolster 4 and the movable support 5.

Referring to fig. 1, the fixing support 4 is provided with an adjusting mechanism 9 for adjusting the position of the welding gun 3, the welding gun 3 is mounted on the fixing support 4 through the adjusting mechanism 9, the moving support 5 is also provided with the same adjusting mechanism 9 and the welding gun 3, the gun nozzle of each welding gun 3 is located at the joint of the end part of the corresponding aluminum roller and the choke plug, welding operation can be simultaneously performed on the two ends of the aluminum roller through the two sets of welding guns 3, and welding efficiency is improved.

Referring to fig. 2, a motor 10 for driving the aluminum roller to rotate is fixedly arranged in the fixed support 4, an output shaft of the motor 10 is coaxially and fixedly provided with a main shaft 11, one end of the main shaft 11, which is far away from the motor 10, rotates to penetrate through the side wall of the fixed support 4, one end of the main shaft 11, which penetrates through the side wall of the fixed support 4, is fixedly connected with a chuck 7, and the end face of the chuck 7, which is far away from the main shaft 11, clamps the aluminum roller; the starting motor 10 drives the main shaft 11 to rotate, and the main shaft 11 rotates to drive the chuck 7 to rotate, so that the aluminum roller is driven to rotate around the axis of the aluminum roller.

Referring to fig. 2, the adjusting mechanism 9 includes a lifting portion 12, a telescopic portion 17 and a clamping portion 19, the lifting portion 12 is used for adjusting the height of the welding gun 3, the telescopic portion 17 is used for adjusting the distance between the nozzle of the welding gun 3 and the aluminum roller, and the clamping portion 19 facilitates the disassembly of the welding gun 3; the lifting part 12 comprises an adjusting screw 13 and an adjusting slider 14, an adjusting groove 15 is formed in the side wall, close to the chuck 7, of the fixing support 4 in the vertical direction, the adjusting screw 13 is rotatably arranged on the inner wall of the bottom of the adjusting groove 15, the axis of the adjusting screw 13 is vertical, the adjusting screw 13 penetrates through the adjusting slider 14, the adjusting screw 13 is in threaded connection with the adjusting slider 14, the adjusting slider 14 is slidably connected to the inner wall of the adjusting groove 15 in the vertical direction, the top end of the adjusting screw 13 rotates to penetrate out of the top end of the fixing support 4, and an adjusting hand wheel 16 is coaxially fixed at one end, penetrating out of the fixing support 4, of the adjusting screw 13; the adjusting hand wheel 16 is rotated to drive the adjusting screw 13 to rotate, and further drive the adjusting slide block 14 to move up and down in the adjusting groove 15.

Referring to fig. 2 and 3, the telescopic part 17 comprises an adjusting cylinder 18, the adjusting cylinder 18 extends and retracts along the axial direction of the chuck 7, and the cylinder body of the adjusting cylinder 18 is fixedly connected to the side wall of the adjusting slide block 14 far away from the fixed bracket 4; the clamping part 19 comprises a connecting rod 20, two clamping blocks 21 and two locking screws 22, the connecting rod 20 is vertically arranged, the top end of the connecting rod 20 is fixedly connected to a power rod of the adjusting oil cylinder 18, and the bottom end of the connecting rod 20 is fixedly connected with the side wall of one clamping block 21; the opposite side walls of the two clamping blocks 21 are respectively provided with a groove 23, the shape of each groove 23 is an isosceles triangle, the inner wall of each groove 23 is provided with a rubber layer, the welding gun 3 is positioned between the two grooves 23 and is clamped, the axis of the welding gun 3 is parallel to the axis of the chuck 7, and the two clamping blocks 21 are detachably connected through locking screws 22, so that the welding gun 3 is fixed and the welding gun 3 is convenient to detach; when the adjusting hand wheel 16 is rotated to drive the adjusting slide block 14 to move up and down, the adjusting oil cylinder 18 can be driven to move up and down, and the welding gun 3 is further driven to move up and down, so that the welding requirements of aluminum rollers with different diameters are met; when the adjusting oil cylinder 18 is operated to stretch, the welding gun 3 can be driven to move back and forth along the axis direction of the chuck 7, so that the welding requirements of aluminum rollers with different shaft head lengths are met.

Referring to fig. 4, a sliding part 24 for controlling a sliding distance is arranged on the moving support 5, the sliding part 24 includes a rack 25, a gear 26 and a sliding handwheel 27, the rack 25 is arranged on the side wall of the base 1, and the length direction of the rack 25 is parallel to the length direction of the base 1; a square groove 28 is formed in the side wall of the bottom of the movable support 5, the square groove 28 penetrates through the movable support 5 along the length direction of the base 1, the square groove 28 penetrates through the bottom of the movable support 5, the gear 26 is rotatably arranged on the inner wall of the square groove 28, the axis of the gear 26 is perpendicular to the length direction of the base 1, and the gear 26 and the rack 25 are meshed with each other; the gear 26 is coaxially and fixedly provided with a rotating shaft 29, the rotating shaft 29 penetrates through the movable support 5 in a rotating manner, and one end of the rotating shaft 29, which penetrates through the movable support 5, is coaxially fixed with the sliding hand wheel 27; the sliding hand wheel 27 is rotated to drive the gear 26 to rotate, and the movable base 1 is driven to move in the length direction of the base 1 under the meshing action of the gear 26 and the rack 25; the gear 26 is positioned in the square groove 28, so that the pollution of the external environment to the gear 26 can be reduced, and the service life of parts can be prolonged.

Referring to fig. 4, a limiting portion 31 for limiting the movement of the moving support 5 is arranged on the sliding hand wheel 27, the limiting portion 31 includes a limiting rod 32 and a spring 33 coaxially sleeved on the limiting rod 32, an axis of the limiting rod 32 is parallel to a rotation axis of the sliding hand wheel 27, the limiting rod 32 is slidably arranged in the sliding hand wheel 27 along an axis direction of the limiting rod 32, a baffle 35 for blocking the spring 33 is fixedly arranged at one end of the limiting rod 32 away from the base 1, and the spring 33 is located between the baffle 35 and the sliding hand wheel 27; a limit groove 34 is formed in the side wall of the base 1 along the length direction of the base 1, one end, far away from the baffle 35, of the limit rod 32 is inserted into the limit groove 34, and the limit rod 32 is connected into the limit groove 34 in a sliding mode along the axis direction of the limit rod 32; when outwards pulling open the gag lever post 32 along gag lever post 32 axis direction, make the gag lever post 32 keep away from the one end of baffle 35 and leave spacing groove 34, rotate the hand wheel 27 that slides simultaneously and drive and remove support 5 and make a round trip to slide along base 1 length direction, when sliding to suitable position, adjust the position of gag lever post 32, make gag lever post 32 just to spacing groove 34, lift off the power of outwards pulling open the gag lever post 32, make gag lever post 32 peg graft back spacing inslot 34 again under the effect of spring 33, the restriction of spacing groove 34 makes gag lever post 32 can't continue to rotate along with the hand wheel 27 that slides, with this realization is spacing to removal support 5.

Referring to fig. 4 and 5, the shoe 8 includes a sliding seat 36, a telescopic cylinder 37 and a circular arc plate 38, a sliding part 24 for controlling the sliding distance is also arranged on the side wall of the sliding seat 36, and the sliding part 24 is used for controlling the shoe 8 to slide along the length direction of the base 1; the telescopic oil cylinder 37 is arranged along the vertical direction, the cylinder body of the telescopic oil cylinder 37 is fixedly arranged at the top of the sliding seat 36, and a power rod of the telescopic oil cylinder 37 is fixedly arranged with the outer circular arc wall of the circular arc plate 38; the end surfaces of the two ends of the arc surface of the arc plate 38 are respectively and rotatably provided with a roller 39, the axial direction of the roller 39 is parallel to the length direction of the base 1, and the roller 39 is always in rolling connection with the arc surface of the aluminum roller; the arrangement of the roller 39 ensures that the aluminum roller rotates more smoothly; the collet 8 can slide along the length direction of the base 1, and can also drive the circular arc-shaped plate 38 to be adjusted up and down by operating the telescopic oil cylinder 37, so that the feasibility of the welding operation of single operation is increased.

The implementation principle of the automatic welding device in the embodiment of the application is as follows: when the welding operation of the end part and the choke plug of the aluminum roller is carried out, firstly, the positions of the two circular arc-shaped plates 38 on the length direction of the base 1 are adjusted by adjusting the position of the sliding seat 36 on the base 1, so that the two circular arc-shaped plates 38 are uniformly distributed according to the length of the aluminum roller; transferring the aluminum roller to two arc-shaped plates 38, starting a telescopic oil cylinder 37, lifting the aluminum roller, and enabling shaft heads at two ends of the aluminum roller to coaxially correspond to the chucks 7 at two sides respectively; the corresponding shaft heads at the two ends of the aluminum roller are clamped through the chucks 7, the position of the movable support 5 on the base 1 is adjusted through the adjusting sliding part 24, and the chucks 7 on the movable support 5 are clamped with the corresponding shaft heads on the aluminum roller; simultaneously adjusting the lifting parts 12 at the two ends of the base 1 to enable the gun mouths of the two welding guns 3 to be respectively positioned at the same horizontal height with the welding part; simultaneously adjusting the telescopic parts 17 at the two ends of the base 1 to ensure that the gun mouths of the two welding guns 3 are respectively aligned with the welding positions; starting a motor 10 to drive the aluminum roller to rotate, and simultaneously starting two welding guns 3 to perform welding work; after the aluminum roller rotates for one circle, the motor 10 and the welding guns 3 are stopped, and the gun mouths of the two welding guns 3 are separated from the welding position by adjusting the telescopic parts 17 at the two ends of the base 1, so that the welding operation between the two ends of the aluminum roller and the choke plug is realized.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An automatic welding device, includes welder (3) that is used for welding aluminium roller and vexed head seam crossing, its characterized in that: the aluminum roller is characterized by further comprising a base (1) and supports (2) arranged at two ends of the base (1), wherein chucks (7) are respectively rotatably arranged on the supports (2), the two chucks (7) are coaxial, the aluminum roller is horizontally clamped between the two chucks (7), a motor (10) for driving the aluminum roller to rotate is arranged on one support (2), and the motor (10) is connected with the corresponding chuck (7); still be provided with adjustment mechanism (9) that are used for adjusting welder (3) position on support (2), welder (3) are installed on support (2) through adjustment mechanism (9), the rifle mouth of welder (3) is located the seam crossing of aluminium roller tip and vexed head.

2. An automatic soldering apparatus according to claim 1, wherein: the number of the welding guns (3) is set to two, the number of the adjusting mechanisms (9) is also set to two, each welding gun (3) is arranged on the corresponding support (2) through the corresponding adjusting mechanism (9), and the gun nozzle of each welding gun (3) is located at the joint of the end part of the corresponding aluminum roller and the choke plug.

3. An automatic soldering apparatus according to claim 1, wherein: the adjusting mechanism (9) comprises a lifting part (12) used for adjusting the height of the welding gun (3), the lifting part (12) comprises an adjusting screw rod (13) and an adjusting slide block (14), the adjusting screw rod (13) is rotatably connected to the support (2), the adjusting screw rod (13) penetrates through the adjusting slide block (14), the adjusting screw rod (13) is in threaded connection with the adjusting slide block (14), the adjusting slide block (14) is in radial sliding connection with the support (2) along the aluminum roller, and the welding gun (3) moves synchronously along with the movement of the adjusting slide block (14).

4. An automatic soldering apparatus according to claim 1, wherein: the adjusting mechanism (9) comprises a telescopic part (17) used for adjusting the horizontal distance between a welding gun nozzle and the aluminum roller of the welding gun (3), the telescopic part (17) comprises an adjusting oil cylinder (18), the adjusting oil cylinder (18) is arranged on one side of the support (2), the adjusting oil cylinder (18) stretches along the axis direction of the chuck (7), and the welding gun (3) moves synchronously along with the movement of a power rod of the adjusting oil cylinder (18).

5. An automatic soldering apparatus according to claim 1, wherein: adjustment mechanism (9) are including making welder (3) convenient to detach's clamping part (19), clamping part (19) are including grip block (21) and locking screw (22), grip block (21) are established to two, and one of them grip block (21) sets up the one side at support (2), welder (3) are located between two grip block (21) to two grip block (21) are through locking screw (22) detachable connection.

6. An automatic soldering apparatus according to claim 1, wherein: the side wall of the base (1) is provided with a rack (25) along the length direction of the base (1), the bottom of the bracket (2) far away from the motor (10) is connected to the base (1) in a sliding manner, the outer wall of the bottom of the bracket (2) far away from the motor (10) is rotatably provided with a gear (26), and the gear (26) is meshed with the rack (25); one end of the gear (26) far away from the support (2) is coaxially provided with a sliding hand wheel (27).

7. An automatic soldering apparatus according to claim 6, wherein: wear to be equipped with gag lever post (32) on the hand wheel (27) that slides, the axis of gag lever post (32) is on a parallel with the axis of rotation of hand wheel (27) that slides, gag lever post (32) along self axis direction sliding connection in hand wheel (27) that slides, spacing groove (34) have been seted up along base (1) length direction to the lateral wall of base (1), the tip that gag lever post (32) is close to base (1) is in spacing groove (34) along the axis direction sliding connection of gag lever post (32).

8. An automatic soldering apparatus according to claim 1, wherein: be provided with collet (8) that are used for supporting the aluminium roller on base (1), collet (8) are located between two supports (2), collet (8) are including sliding seat (36), vertical setting at telescopic cylinder (37) on sliding seat (36) top and setting at circular arc shape board (38) on telescopic cylinder (37) top, base (1) length direction sliding connection is followed in base (1) to sliding seat (36).