CN214852588U - Lifting device for movable steel mesh - Google Patents

Abstract

The application relates to a lifting device for activity steel mesh, it includes the vertical actuating mechanism who slides in the lift piece of corner fittings body lower extreme and drive lift piece removal, actuating mechanism is including rotating the rotating member who connects in the corner fittings body and drive rotating member pivoted rotary driving spare, the axis of rotating member is skew rather than the axis of rotation, the lateral wall of rotating member can with lift piece butt and drive the lift piece and move towards the direction of keeping away from the corner fittings body. This application utilizes the rotating member to drive the lifting member and stretches out from this internal, utilizes the lifting member to inject the distance that elevating gear descends this moment, makes elevating gear can not exert an influence to by printed matter or other equipment because of the too big of the distance that descends in the decline process.

Description

Lifting device for movable steel mesh

Technical Field

The application relates to the field of surface mounting technology, in particular to a lifting device for a movable steel mesh.

Background

SMT (surface mount technology), known as surface mount or surface mount technology, is currently one of the most popular techniques and processes in the electronic assembly industry. The surface-mounted component without pins or short leads is mounted on the surface of a printed circuit board or other substrates and is soldered and assembled by methods such as reflow soldering or dip soldering. The core of SMT processing lies in adopting the steel mesh that is preset with the mesh to carry out the solder paste printing, and along with advocating and developing of environmental protection theory, the steel mesh that the printing was used also evolves gradually into the movable steel mesh that can move about to change by the fixed structure of early an organic whole.

Chinese patent publication No. CN108437614A discloses an active steel net, which mainly comprises steel sheets with meshes, an inner frame for supporting the steel sheets, and an active net frame for mounting the inner frame, wherein the active net frame comprises a main frame and a corner fitting body for connecting the main frame. The movable net frame is provided with a lifting device used for clamping or loosening the inner frame and a tensioning device used for opening the tensioning inner frame to tension the steel sheet, and meanwhile, the lifting device and the tensioning device are driven by high-pressure air. The inner frame can be replaced through the lifting device and the tensioning device, so that the purpose of movably replacing the steel mesh is achieved.

The movable steel mesh is installed and is used on the printing machine, and its below can set up by the printing piece in printing process, and the top sets up the printing scraper, and in the actual printing process, the coating has the tin cream on the steel sheet of movable steel mesh, leaks to be printed to on the printing piece with the mesh that the tin cream offered on via the steel sheet by the printing scraper.

However, in the process of replacing the steel mesh, the lifting device needs to be lowered to loosen the inner frame, and the printed object and other equipment still exist below the lifting device in the process of lowering the lifting device, and at this time, if the lowering distance of the lifting device is too large, the lifting device collides with the printed object or other equipment, which may happen.

Therefore, a new technical solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to limit the descending distance of the lifting device and prevent the lifting mechanism from directly colliding with a printed matter or other equipment after descending, the application provides the lifting device for the movable steel mesh.

The application provides a elevating gear for activity steel mesh adopts following technical scheme:

the utility model provides a elevating gear for activity steel mesh, includes the vertical actuating mechanism who slides in the lift piece and the drive lift piece removal of corner fittings body lower extreme, actuating mechanism is including rotating the rotating member and the rotatory driving piece of drive rotating member pivoted that connect in the corner fittings body, the axis of rotating member is skew rather than the axis of rotation, the lateral wall of rotating member can with lift piece butt and drive the direction removal that the corner fittings body was kept away from to the lift piece orientation.

Through adopting above-mentioned technical scheme, utilize the rotating member to drive the lifting member and stretch out from the angle spare is internal, utilize the lifting member to inject the distance that elevating gear descends this moment, make elevating gear can not exert an influence to by printed matter or other equipment because of the too big of the distance that descends in the decline process.

Optionally: the one end that the piece that goes up and down is close to the rotating member is provided with the stopper, be provided with the baffle on the corner fitting body, the piece that goes up and down wears to locate the baffle and moves along the baffle, the stopper is kept away from the one end of rotating member and can be close to the terminal surface butt of corner fitting body with the baffle.

Through adopting above-mentioned technical scheme, utilize the cooperation of stopper and baffle to carry on spacingly to the lifting member, make the lifting member be difficult for breaking away from the corner fittings body to make the removal process of lifting member more stable.

Optionally: the lifting piece is provided with an elastic piece for driving the lifting piece to move towards the corner piece body, one end of the elastic piece is abutted to one end, far away from the rotating piece, of the limiting block, and the other end of the elastic piece is abutted to the side wall, close to the corner piece body, of the baffle plate.

Through adopting above-mentioned technical scheme, the elastic component exerts towards this internal elasticity of angle spare to the lifter, makes the lifter keep the state in the lifter of withdrawal when not receiving the pressure that the rotating member was exerted to the difficult condition that appears lifter and other mechanism contact of printing in-process.

Optionally: the maximum distance from the side wall of the rotating part far away from the rotating axis to the rotating axis is smaller than the maximum distance between the baffle and the limiting block.

Through adopting above-mentioned technical scheme, promote the in-process that the piece removed that goes up and down at the rotating member, still leave the clearance between stopper and the baffle, make the stopper can directly not produce the collision with the baffle.

Optionally: the corner fitting is characterized in that a connecting piece is arranged in the corner fitting body in a sliding mode, the connecting piece is fixed at one end, close to the rotating piece, of the lifting piece, a guide groove is formed in the side wall, parallel to the moving direction of the connecting piece, the rotating piece is arranged in the guide groove in a sliding mode, and the side wall, far away from the rotating axis of the rotating piece, of the rotating piece can abut against the side wall, close to the lifting piece, of the guide groove.

Through adopting above-mentioned technical scheme, the rotating member can drive connecting piece reciprocating motion to drive the reciprocating motion of lift piece, the mechanism that the drive lift piece removed this moment only is accomplished by the rotating member, thereby makes the drive of lift piece more convenient.

Optionally: the radius of the guide groove is equal to the maximum distance from the side wall of the rotating member far away from the rotating axis to the rotating axis.

Through adopting above-mentioned technical scheme, at the pivoted in-process of rotating member, the rotating member is kept away from its axis of rotation's lateral wall and can be kept the contact with the guide way inner wall throughout to can not produce the collision with the guide way inner wall at rotating member pivoted in-process, thereby make the process that rotating member drive lift removed more stable.

Optionally: the outer wall of the rotating part coaxially rotates to form a rotating sleeve, and the outer wall of the rotating sleeve can be abutted to the inner wall of the guide groove.

Through adopting above-mentioned technical scheme, sliding friction between with revolving part and the guide way changes rolling friction into through rotating the cover to reduce the frictional force between guide way and the revolving part, increased the life of revolving part and connecting piece.

Optionally: and the outer wall of the connecting piece is provided with a wear-resistant coating.

Through adopting above-mentioned technical scheme, reduce the wearing and tearing of connecting piece in the slip process, make the moving direction of support piece can keep unanimous.

Drawings

FIG. 1 is a schematic structural diagram of example 1 of the present application;

fig. 2 is a schematic view for showing a motor mounting position according to embodiment 1 of the present application;

FIG. 3 is a schematic view showing the structure of a connector according to embodiment 2 of the present application;

fig. 4 is a schematic structural diagram of the background art.

In the figure, 1, a corner fitting body; 11. a sliding hole; 12. accommodating grooves; 13. a baffle plate; 2. a lifting member; 21. a limiting block; 22. a spring; 31. A motor; 32. a rotating member; 33. rotating the sleeve; 4. a connecting member; 41. a guide groove.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The application discloses a elevating gear for activity steel mesh, as shown in fig. 1 and 2, including vertical the elevating part 2 that slides in corner fittings body 1 lower extreme and the actuating mechanism that drives elevating part 2 and remove, two lateral walls that four corner fittings bodies are close to each other are fixed with two main frames respectively to form the movable net frame that four edges are constituteed, elevating gear sets up in four corner fittings bodies departments. The columniform hole 11 that slides is seted up to 1 lower extreme of corner fittings body, and lifting member 2 sets up vertical removal in the hole 11 that slides. The driving mechanism comprises a rotating member 32 rotatably connected in the sliding hole 11 and a rotary driving member for driving the rotating member 32 to rotate, and the rotary driving member comprises a motor 31. The holding tank 12 that holds motor 31 is seted up to corner fitting body 1 lateral wall, and motor 31 uses the bolt fastening in holding tank 12, and the output shaft of motor 31 wears to locate in the hole of sliding 11 and be connected with rotating member 32, and the axis of rotating member 32 and the axis of the output shaft of motor 31 deviate from each other to form the eccentric wheel structure. At this time, the lifter 2 is pushed out from the slide hole 11 by the rotary member 32, and the lifter 2 supports the corner fitting body 1, so that the downward movement distance of the lifter connected to the corner fitting body 1 is restricted.

As shown in fig. 1, in order to make the elevator member less likely to fall from the slide hole 11, a stopper 21 is integrally formed at one end of the elevator member 2 close to the rotation member 32, and the stopper 21 abuts against the inner wall of the slide hole 11. The lateral wall that the hole 11 that slides was seted up to corner fittings body 1 still uses the bolt can dismantle to be connected with baffle 13, and baffle 13 seals the opening in hole 11 that slides. The lifting piece 2 penetrates through the baffle 13 and moves vertically along the baffle 13, and the side wall of the limiting block 21 far away from the rotating piece 32 can abut against the side wall of the corner piece body 1 close to the baffle 13. At this time, the position of the lifter 2 is restricted by the stopper 13, so that the lifter 2 is not easily detached from the slide hole 11.

As shown in fig. 1, because in the printing process, the corner fitting body 1 still can produce vertical movement, thereby the lower extreme of the lifting piece 2 can keep stretching out the state of the sliding hole 11 and producing the collision this moment, consequently, the lifting piece 2 still cup joints the elastic component that drives it and move towards the sliding hole 11, and the elastic component includes spring 22, and the one end of spring 22 is close to the terminal surface butt of lifting piece 2 with stopper 21, and the other end of spring 22 is close to the lateral wall butt of corner fitting body 1 with baffle 13. The spring 22 is used for applying elastic force to the lifting piece 2 towards the inner cavity of the sliding hole 11, so that the lifting piece 2 is kept in the state in the sliding hole 11 when not being applied with the force by the rotating piece 32, and the printing process is not easily influenced.

In order to drive the lifting piece 2 to extend out of the sliding hole 11 at the rotating piece 32, the limiting block 21 cannot directly collide with the baffle 13, the maximum distance from the side wall of the rotating axis of the rotating piece 32 to the rotating axis is smaller than the maximum distance between the baffle 13 and the limiting block 21, and at the moment, in the process that the rotating piece 32 pushes the lifting piece 2 to move, the limiting block 21 cannot directly contact with the baffle 13, so that the baffle 13 and the limiting block 21 are not easy to deform.

The implementation principle of the embodiment is as follows: when the lifting device needs to move downwards, the rotating member 32 is driven by the motor 31 to rotate, so that the side wall of the rotating member 32, which is far away from the rotating axis, is abutted against the limiting block 21, and the lifting member 2 extends out of the sliding hole 11. When the lifting member 2 needs to retract into the sliding hole 11, the rotating member 32 rotates to enable the side wall close to the rotation axis to be close to the limiting block 21, and at the moment, the lifting member 2 retracts into the lifting hole under the driving of the spring 22.

Embodiment 2, as shown in fig. 3, differs from embodiment 1 in that the corner fitting body 1 is not provided with a spring 22, the sliding hole 11 is provided with a connecting member 4 moving along the axis thereof, the outer wall of the connecting member 4 is arc-shaped and keeps fit with the sliding hole 11, and the connecting member 4 and the limiting block 21 are integrally formed. The connecting piece 4 is provided with a guide groove 41 which is arranged in a penetrating manner on the side wall parallel to the moving direction of the connecting piece, and the rotating piece 32 is arranged in the guide groove 41 and the side wall far away from the rotating axis can be abutted against the inner wall of the guide groove 41. Utilize at this moment in the pivoted in-process of rotating member 32, drive lifter 2 through connecting piece 4 and stretch out and retract in the sliding hole 11, no longer set up alone this moment and promote the basis that lifter 2 retracts sliding hole 11 to it is more convenient to make its installation and production process.

As shown in fig. 3, in order to keep the rotating member 32 in contact with the inner wall of the guide groove 41 during the rotation process, the radius of the guide groove 41 is equal to the maximum distance from the side wall of the rotating member 32 away from the rotation axis to the rotation axis, and at this time, during the rotation process of the rotating member 32, the side wall of the rotating member 32 away from the rotation axis keeps in contact with the inner wall of the guide groove 41, so that the impact is not easily generated between the rotating member 32 and the connecting member 4 during the rotation process, and the process of driving the connecting member 4 to move by the rotating member 32 is not easily affected.

As shown in fig. 3, in order to reduce the wear between the rotating member 32 and the guide groove 41, the rotating sleeve 33 is coaxially sleeved outside the rotating member 32, the outer wall of the rotating sleeve 33 can be kept in contact with the inner wall of the guide groove 41, a plurality of rollers are further arranged between the rotating sleeve 33 and the rotating member 32, the rollers are arranged along the axial direction of the rotating member 32, and the rollers are rotatably connected with the rotating member 32. At this time, the sliding friction between the rotary member 32 and the inner wall of the guide groove 41 is converted into rolling friction by the rotating sleeve 33, so that the friction between the rotary member 32 and the inner wall of the guide groove 41 is reduced, and the abrasion of the rotary member 32 and the inner wall of the guide groove 41 is reduced.

As shown in fig. 3, in order to reduce the wear of the connecting member 4 in the sliding hole 11, the outer wall of the connecting member 4 is further provided with a wear-resistant soil layer, and the wear-resistant coating comprises a wear-resistant ceramic coating, so that the wear of the connecting member 4 and the sliding hole 11 is reduced, and the moving direction of the lifting member 2 is kept stable.

The implementation principle of the embodiment is as follows: when the lifting piece 2 needs to be ejected, the motor 31 drives the rotating piece 32 to rotate until the side wall of the rotating piece 32 far away from the rotating axis is abutted to the position of the guide groove 41 close to the lifting piece 2, at the moment, the lifting piece 2 extends out of the sliding hole 11, when the lifting piece 2 needs to be retracted into the sliding hole 11, the rotating piece 32 rotates until one end of the rotating piece 32 far away from the rotating axis is abutted to one end of the guide groove 41 far away from the lifting piece 2, and at the moment, retraction of the lifting piece 2 is completed.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, 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 (8)

1. A lifting device for a movable steel net is characterized in that: including vertical sliding in lifting member (2) and the actuating mechanism that drives lifting member (2) and remove of corner fitting body (1) lower extreme, actuating mechanism is including rotating swivel member (32) and the rotatory driving piece of drive swivel member (32) of connecting in corner fitting body (1), the axis of swivel member (32) is skew rather than the axis of rotation, the lateral wall of swivel member (32) can with lifting member (2) butt and drive lifting member (2) and move towards the direction of keeping away from corner fitting body (1).

2. A lifting device for a movable steel net according to claim 1, wherein: the one end that goes up and down piece (2) and be close to gyration piece (32) is provided with stopper (21), be provided with baffle (13) on corner fittings body (1), baffle (13) are worn to locate in piece (2) and are removed along baffle (13), the one end that gyration piece (32) were kept away from in stopper (21) can be close to the terminal surface butt of corner fittings body (1) with baffle (13).

3. A lifting device for a movable steel net according to claim 2, wherein: the lifting piece (2) is provided with an elastic piece for driving the lifting piece to move towards the corner piece body (1), one end of the elastic piece is abutted to one end, far away from the rotating piece (32), of the limiting block (21), and the other end of the elastic piece is abutted to the side wall, close to the corner piece body (1), of the baffle (13).

4. A lifting device for a movable steel net according to claim 3, wherein: the maximum distance from the side wall of the rotating part (32) far away from the rotating axis to the rotating axis is smaller than the maximum distance between the baffle (13) and the limiting block (21).

5. A lifting device for a movable steel net according to claim 1, wherein: the corner fitting is characterized in that a connecting piece (4) is arranged in the corner fitting body (1) in a sliding mode, the connecting piece (4) is fixed at one end, close to the rotating piece (32), of the lifting piece (2), a guide groove (41) is formed in the side wall, parallel to the moving direction of the connecting piece (4), the rotating piece (32) is arranged in the guide groove (41) in a sliding mode, and the side wall, away from the rotating axis of the rotating piece (32), of the rotating piece can abut against the side wall, close to the lifting piece (2), of the guide groove (41).

6. A lifting device for a movable steel net according to claim 5, wherein: the radius of the guide groove (41) is equal to the maximum distance from the side wall of the rotating member (32) far away from the rotating axis to the rotating axis.

7. A lifting device for a movable steel net according to claim 5, wherein: the outer wall of the rotating piece (32) coaxially rotates to form a rotating sleeve (33), and the outer wall of the rotating sleeve (33) can be abutted to the inner wall of the guide groove (41).

8. A lifting device for a movable steel net according to claim 5, wherein: and the outer wall of the connecting piece (4) is provided with a wear-resistant coating.

Images