CN214852077U

CN214852077U - Lifting mechanism for movable steel mesh

Info

Publication number: CN214852077U
Application number: CN202121582292.6U
Authority: CN
Inventors: 张深义; 杨花玲; 刘丕汉; 孙建华; 张鹏超; 王卓
Original assignee: Shenzhen Mengrui Electronics Co ltd
Current assignee: Shenzhen Mengrui Electronics Co ltd
Priority date: 2021-07-10
Filing date: 2021-07-10
Publication date: 2021-11-23
Anticipated expiration: 2031-07-10

Abstract

The utility model belongs to the technical field of surface mounting technique in the electronic packaging trade and specifically relates to a lifting mechanism for activity steel mesh is related to, it includes slides and connects in the sliding member of angle connecting piece, locate the clamp plate on the sliding member, locate driving motor in the angle connecting piece and locate the transmission assembly between sliding member and the driving motor output shaft, the one end of sliding member is in the angle connecting piece, and the other end can stretch out in the angle connecting piece, and the clamp plate is outside the angle connecting piece. This application can effectively reduce and use for a long time and lead to the condition that elevating system can not normally work.

Description

Lifting mechanism for movable steel mesh

Technical Field

The application relates to the technical field of surface assembly in the electronic assembly industry, in particular to a lifting mechanism 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 technologies 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 solder paste printing was used also evolves gradually into the movable steel mesh that can the free activity change by early integrative fixed structure.

Chinese patent publication No. CN108437614A discloses a movable steel net, which mainly comprises a movable steel sheet assembly and a movable net frame for mounting the movable steel sheet assembly, wherein the movable steel sheet assembly comprises a steel sheet and an auxiliary frame for fixing and supporting the steel sheet; correspondingly, the movable screen frame is provided with a lifting mechanism for lifting and clamping and positioning the auxiliary frame and a tensioning mechanism for tensioning the auxiliary frame to tighten the steel sheet. The movable net frame comprises four edge strips and four corner connecting pieces, and the four edge strips and the four corner connecting pieces are spliced to form a rectangular frame body.

Specifically, a piston cavity is arranged in the corner connecting piece, and the lifting mechanism comprises a piston plate arranged in the piston cavity, a piston rod connected to the piston plate and capable of extending out of the corner connecting piece, elasticity sleeved on the piston rod and a pressing plate connected to the exposed end of the piston rod; meanwhile, the circumferential side wall of the piston plate is sleeved with a sealing ring to seal the piston plate and the piston cavity by utilizing the sealing ring, so that a closed space is formed between one side of the piston plate, which is far away from the piston rod, and the piston cavity.

Furthermore, the pressure plate has a clamping position and a release position relative to the corner connector; in the actual use process, the spring is tightly propped against the piston plate, so that the pressing plate connected with the piston plate is positioned at the clamping position to clamp and position the auxiliary frame; if the auxiliary frame needs to be loosened, compressed gas is introduced into a closed space formed by the piston cavity and the sealing plate to drive the piston plate to move, so that the pressing plate moves from the clamping position to the loosening position, and the purpose of loosening the auxiliary frame is achieved.

In the process of actually loosening the auxiliary frame, compressed gas is introduced into a closed space between the piston cavity and the piston plate so as to apply thrust force overcoming the elastic force of the spring to the piston plate to realize the movement of the pressing plate; however, as the piston plate moves repeatedly, the situation that the sealing ring is worn to reduce the sealing performance of the sealed space is easy to occur, and the situation that the auxiliary frame cannot be loosened due to the fact that the pressure plate does not move after ventilation possibly occurs, so that the normal work of the lifting mechanism is influenced.

SUMMERY OF THE UTILITY MODEL

In order to reduce the situation that the lifting mechanism cannot work normally due to long-term use, the application provides the lifting mechanism for the movable steel mesh.

The application provides a lifting mechanism for activity steel mesh adopts following technical scheme:

the utility model provides a elevating system for activity steel mesh, includes the slip of sliding connection in the angle connecting piece, locate the clamp plate on the slip, locate the driving motor in the angle connecting piece and locate the transmission assembly between slip and the driving motor output shaft, the one end of slip is in the angle connecting piece, and the other end can stretch out in the angle connecting piece, the clamp plate is outside the angle connecting piece.

By adopting the technical scheme, the driving motor is used as a power source, and the transmission assembly arranged between the sliding piece and the output shaft of the driving motor is used for driving the sliding piece to move, so that the pressing plate is driven to move, and the pressing plate can reciprocate between the clamping position and the loosening position; in the whole scheme, the driving motor is adopted to replace compressed air as a power source, so that a sealing ring is not needed to form a closed space. Compare in using the sealing washer, under the condition of same motion frequency, whole elevating system's wearing and tearing are less, and even if there is wearing and tearing, driving motor and drive assembly set up the drive action that also can carry out the piece that slides to effectively reduce long-term use and lead to the condition that elevating system can not normally work.

Optionally, the transmission assembly includes a transmission gear and a transmission rack which are engaged with each other, the transmission gear is arranged on an output shaft of the driving motor, the transmission rack is arranged on the sliding member, and the length direction of the transmission rack is parallel to the sliding direction of the sliding member.

Through adopting above-mentioned technical scheme, driving motor drives drive gear and rotates, recycles drive gear and drive rack's meshing effect, orders about drive rack and drives the sliding part and drive, and overall structure is simple and practical.

Optionally, the transmission assembly includes a transmission turntable and a transmission rod, the transmission turntable is connected to an output shaft of the driving motor, and an axis of the output shaft of the driving motor is perpendicular to a sliding direction of the sliding member; one end of the transmission rod is eccentrically connected to the transmission turntable, the other end of the transmission rod is connected to the sliding part in a sliding mode, and an included angle is formed between the sliding direction of the transmission rod relative to the sliding part and the sliding direction of the sliding part relative angle connecting piece.

By adopting the technical scheme, the driving motor drives the transmission turntable to rotate, the transmission rod is eccentrically connected to the transmission turntable, the rotation of the transmission turntable can drive the position of the transmission rod to change, and the transmission rod is connected with the sliding part in a sliding manner, so that the aim of driving the sliding part to move is fulfilled.

Optionally, a sliding groove is formed in the sliding part, the length direction of the sliding groove is perpendicular to the sliding direction of the sliding part, and the transmission rod is in sliding fit with the sliding groove.

Through adopting above-mentioned technical scheme, the transfer line stretches into and can realize the slip between transfer line and the spout and be connected in the spout, and simple structure and practicality are strong.

Optionally, the sliding part is detachably connected with the pressing plate, and a connecting structure is arranged between the sliding part and the pressing plate.

Through adopting above-mentioned technical scheme, make sliding member and clamp plate can dismantle and be connected, be convenient for in the actual assembly process with sliding member installation to the corner connector inside.

Optionally, the connecting structure comprises a connecting bolt, a connecting screw hole in threaded connection with the connecting bolt is formed in one end, capable of extending out of the corner connecting piece, of the sliding piece, and a bolt through hole for the connecting bolt to penetrate through is formed in the pressing plate.

Through adopting above-mentioned technical scheme, adopt connecting bolt's mode to be connected the piece that slides with the clamp plate, overall structure is simple, and connection stability is high.

Optionally, the sliding member is provided with a rotation limiting part for limiting the rotation of the sliding member.

Through adopting above-mentioned technical scheme, set up the restriction of limit commentaries on classics portion slip self mode and rotate, can make the slip of slip more stable, reduce the shake of slip removal in-process to reduce wearing and tearing.

Optionally, the cross section of the sliding part is square.

Through adopting above-mentioned technical scheme, the sliding part simple structure of square cross section just is convenient for make, and simultaneously, the edge of sliding part all can regard as the restriction portion of rotating of restriction self.

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

1. the situation that the lifting mechanism cannot work normally due to long-term use can be effectively reduced;

2. the square-section sliding part is simple in structure and convenient to manufacture, meanwhile, the edge of the sliding part can be used as a rotation limiting part for limiting rotation of the sliding part, the rotation limiting part is used for reducing shaking of the sliding part in the moving process, and abrasion can be reduced.

Drawings

Fig. 1 is a schematic view of a lifting mechanism and a corner connector in embodiment 1 of the present application.

Fig. 2 is a schematic view of a movable screen frame formed by splicing a main frame and corner connectors according to an embodiment of the present application.

Fig. 3 is a schematic view of the lifting mechanism and the corner connector in embodiment 2 of the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a schematic sectional view of the elevator mechanism and the corner connector in embodiment 2 of the present application.

Fig. 6 is an enlarged schematic view of a portion B in fig. 5.

Description of reference numerals: 1. a sliding member; 11. a connecting screw hole; 2. pressing a plate; 21. a bolt through hole; 3. a drive motor; 4. a transmission gear; 5. a drive rack; 6. a transmission turntable; 7. a transmission rod; 8. a cross bar; 81. a chute; 9. a corner connector; 10. and (4) a main frame.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a lifting mechanism for a movable steel net.

Example 1

A lifting mechanism for a movable steel mesh refers to fig. 1 and comprises a sliding piece 1 connected with a corner connecting piece 9 in a sliding mode, a pressing plate 2 connected with the sliding piece 1, a driving motor 3 installed in the corner connecting piece 9 and a transmission assembly arranged between an output shaft of the driving motor 3 and the sliding piece 1. One end of the sliding piece 1 is positioned in the corner connecting piece 9, and the other end of the sliding piece can extend out of the corner connecting piece 9; meanwhile, one end of the sliding part 1, extending out of the corner connecting part 9, is provided with a connecting screw hole 11, correspondingly, a bolt through hole 21 which can be aligned with the connecting screw hole 11 is formed in the pressing plate 2, so that the pressing plate 2 can be detachably connected with the sliding part 1 through the connecting bolt, and the sliding part 1 is convenient to install in the actual assembling process. In addition, the cross section of the sliding part 1 is rectangular, a through hole for the sliding part 1 to penetrate through is formed in the corner connecting part 9, and the sliding part 1 slides in the through hole. Meanwhile, the edge of the sliding part 1 can be used as a corresponding rotation limiting part, so that the moving process of the sliding part 1 is more stable, and the shaking condition of the sliding part 1 is reduced. In addition, in other embodiments, a structure such as a limiting block or a limiting groove can be additionally arranged on the side wall of the sliding member 1, and correspondingly, the through hole is matched with the limiting block or the limiting groove to achieve the effect of limiting rotation.

In this embodiment, the transmission assembly includes a transmission gear 4 and a transmission rack 5 which are engaged with each other, wherein the transmission gear 4 is installed on an output shaft of the driving motor 3, and the transmission gear 4 and the driving motor 3 are circumferentially fixed, so that the driving motor 3 can drive the transmission gear 4 to rotate. The transmission rack 5 is fixedly arranged on the sliding part 1, and specifically, the transmission rack 5 and the sliding part 1 can be fixedly connected in an integrated forming or bolt connection mode; meanwhile, the length direction of the transmission rack 5 is parallel to the length direction of the sliding member 1.

In this embodiment, the hole wall of the through hole of the corner connecting piece 9 needs to be provided with a groove body for driving the driving rack to move, so that the driving rack can normally move. In actual work, the driving motor 3 drives the transmission gear 4 to rotate, and then the meshing relation between the transmission gear 4 and the transmission rack 5 is utilized, so that the effect of driving the sliding piece 1 to move along the self sliding direction can be achieved.

Meanwhile, in another embodiment, the transmission assembly can also adopt a linear slide rail, and particularly, a lead screw module can be selected, wherein the lead screw module is vertically arranged; in the specific implementation process, in order to reduce the vertical occupied space of the whole driving structure, the driving motor 3 can be horizontally arranged, and a commutator is correspondingly arranged between the screw module and the output shaft of the driving motor 3, so that the driving motor 3 can drive the screw module to move.

Referring to fig. 2, in the movable frame actually assembled by four corner connectors 9 and four main frames 10, the four corner connectors 9 may be installed with separate driving motors 3 for outputting power, or may be used for transmitting power by means of a transmission shaft and a bevel gear.

The implementation principle of the lifting mechanism for the movable steel mesh in the embodiment of the application is as follows: the driving motor 3 drives the transmission gear 4 to rotate, and then the meshing relation between the transmission gear 4 and the transmission rack 5 is utilized, so that the effect of driving the sliding part 1 to move along the self sliding direction can be achieved, and the pressing plate 2 connected to the end part of the sliding part 1 can reciprocate between the clamping position and the loosening position.

Meanwhile, compared with the situation of using a sealing ring, the whole lifting mechanism has smaller abrasion under the condition of the same movement frequency; and even if there is wearing and tearing, driving motor 3 and drive assembly set up and also can carry out the drive action to sliding member 1 to effectively reduce long-term use and lead to the condition that elevating system can not normally work.

Example 2

An elevating mechanism for a movable steel net, referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that: the transmission assembly has a different structure. Specifically, the transmission assembly comprises a transmission turntable 6 and a transmission rod 7. Referring to fig. 3 and 5, the transmission turntable 6 is mounted on the output shaft of the driving motor 3, and the transmission turntable 6 is circumferentially fixed with the output shaft of the driving motor 3, so that the driving motor 3 can drive the transmission turntable 6 to rotate. Meanwhile, in the present embodiment, the axis of the output shaft of the driving motor 3 is perpendicular to the sliding direction of the sliding member 1, so that the transmission turntable 6 mounted on the driving motor 3 is parallel to the sliding direction of the sliding member 1.

Referring to fig. 4 and 6, the transmission rod 7 is a circular rod shape, and the length direction of the transmission rod 7 is parallel to the rotation axis of the transmission turntable 6. Meanwhile, a cross rod 8 is installed at one end, away from the pressing plate 2, of the sliding piece 1, the length direction of the cross rod 8 is parallel to the rotation axis of the transmission turntable 6, and a sliding groove 81 is formed in the cross rod 8 along the length direction of the cross rod.

Referring to fig. 5 and 6, one end of the transmission rod 7 is eccentrically fixed on the transmission turntable 6, and the other end of the transmission rod extends into the sliding groove 81 of the cross bar 8 to be connected with the cross bar 8 in a sliding manner. In actual work, the driving motor 3 drives the transmission turntable 6 to rotate, the transmission rod 7 is eccentrically connected to the transmission turntable 6, the transmission turntable 6 rotates to drive the transmission rod 7 to change in position, and the transmission rod 7 is connected with the sliding part 1 in a sliding mode to drive the sliding part 1 to move.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above 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

1. A kind of lifting gearing used for moving the steel mesh, characterized by that: including sliding and connecting in sliding (1) of angle connecting piece (9), locating clamp plate (2) on sliding (1), locating driving motor (3) in angle connecting piece (9) and locating the transmission assembly between sliding (1) and driving motor (3) output shaft, the one end of sliding (1) is in angle connecting piece (9), and the other end can stretch out in angle connecting piece (9), clamp plate (2) are outside angle connecting piece (9).

2. The elevating mechanism for a movable steel net according to claim 1, wherein: the transmission assembly comprises a transmission gear (4) and a transmission rack (5) which are meshed with each other, the transmission gear (4) is arranged on an output shaft of the driving motor (3), the transmission rack (5) is arranged on the sliding piece (1), and the length direction of the transmission rack (5) is parallel to the sliding direction of the sliding piece (1).

3. The elevating mechanism for a movable steel net according to claim 1, wherein: the transmission assembly comprises a transmission turntable (6) and a transmission rod (7), the transmission turntable (6) is connected to an output shaft of the driving motor (3), and the axis of the output shaft of the driving motor (3) is perpendicular to the sliding direction of the sliding piece (1); the one end eccentric connection of transfer line (7) is in transmission carousel (6), and the other end slides and connects in sliding member (1), just the direction of sliding of transfer line (7) relative sliding member (1) has the contained angle with the direction of sliding member (1) relative angle connecting piece (9).

4. The elevating mechanism for a movable steel net according to claim 3, wherein: be equipped with spout (81) on sliding member (1), the length direction perpendicular to sliding member's (1) sliding direction of spout (81), transfer line (7) and spout (81) cooperation of sliding.

5. The elevating mechanism for a movable steel net according to claim 1, wherein: the sliding part (1) is detachably connected with the pressing plate (2), and a connecting structure is arranged between the sliding part (1) and the pressing plate (2).

6. The elevating mechanism for a movable steel net according to claim 5, wherein: the connecting structure comprises a connecting bolt, one end of the sliding piece (1) capable of extending out of the angle connecting piece (9) is provided with a connecting screw hole (11) in threaded connection with the connecting bolt, and a bolt through hole (21) for the connecting bolt to penetrate through is formed in the pressing plate (2).

7. The elevating mechanism for a movable steel net according to claim 1, wherein: the sliding piece (1) is provided with a rotation limiting part for limiting the rotation of the sliding piece (1).

8. The elevating mechanism for a movable steel net according to claim 7, wherein: the cross section of the sliding part (1) is square.