CN221110632U

CN221110632U - Screw assembling device

Info

Publication number: CN221110632U
Application number: CN202322753486.3U
Authority: CN
Inventors: 万发; 唐江来; 蒋玉斌
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Filing date: 2023-10-13
Publication date: 2024-06-11
Anticipated expiration: 2033-10-13

Abstract

The utility model belongs to the technical field of production equipment, and discloses a screwing assembly device which comprises a clamping assembly and a rotary driving assembly, wherein the clamping assembly comprises a holding clamping jaw and a rotary clamping jaw, the holding clamping jaw is used for clamping a bottom shell, and the rotary clamping jaw is used for clamping an upper cover; the rotary driving assembly comprises a driving piece, a torque sensor and a damper, wherein the torque sensor is in communication connection with the driving piece, the driving piece is used for driving the rotary clamping jaw to axially rotate around the upper cover so that the upper cover is in threaded connection with the bottom shell, one end of the damper is connected with the rotary clamping jaw, the other end of the damper is connected with the driving piece, the torque sensor is configured to detect output torque of the driving piece, and when the output torque is larger than a preset torque, the driving piece can stop acting. The screwing assembly device provided by the utility model realizes automatic screwing assembly between the upper cover and the bottom shell, can avoid product damage caused by overlarge rotation angle or overlarge torsion force, ensures assembly precision, improves product yield and reduces processing cost.

Description

Screw assembling device

Technical Field

The utility model relates to the technical field of production equipment, in particular to a screwing assembly device.

Background

Threaded connection assembly is a common process step in mechanical product assembly, where two parts with threaded structures need to be connected by rotational screwing. For some precision products such as electronic products and medical appliances, the requirements for automatic assembly are high because the products are small in size and easy to damage, and manual assembly or semi-automatic assembly is adopted at present. The assembly efficiency of manual assembly or semi-automatization equipment is lower and the equipment precision is low, and the equipment uniformity is poor, and thereby the cost of labor is higher has increased product processing cost.

Therefore, some assembly equipment adopts automatic assembly mode to realize the spiral of two parts and assembles, and automatic assembly generally adopts rotatable clamping jaw to realize the relative rotation between two parts, but accurate product is easy to damage, and the too big or too big etc. of torsional force of clamping jaw over-rotation condition all can cause the part to damage, influences the product yield, and the part that damages has also increased product processing cost moreover.

Disclosure of utility model

The utility model aims to provide a screwing assembly device which can realize automatic screwing assembly between an upper cover and a bottom shell, avoid product damage caused by over rotation, ensure assembly precision, improve product yield and reduce processing cost.

To achieve the purpose, the utility model adopts the following technical scheme:

The utility model provides a twist assembly device for assemble upper cover and drain pan, the upper cover with drain pan threaded connection, twist assembly device includes:

The clamping assembly comprises a holding clamping jaw and a rotating clamping jaw, the holding clamping jaw is used for clamping the bottom shell, and the rotating clamping jaw is used for clamping the upper cover;

The rotary driving assembly comprises a driving piece, a torque sensor and a damper, wherein the torque sensor is in communication connection with the driving piece, the driving piece is used for driving the rotary clamping jaw to rotate around the axial direction of the upper cover so that the upper cover is in threaded connection with the bottom shell, one end of the damper is connected with the rotary clamping jaw, the other end of the damper is connected with the driving piece, the torque sensor is configured to detect the output torque of the driving piece, and when the output torque is larger than the preset torque, the driving piece can stop acting.

As a preferable structure of the utility model, the screwing assembly device further comprises a feeding assembly, the feeding assembly comprises a flow line and a bottom shell carrier, the flow line is used for conveying the bottom shell carrier, the bottom shell carrier is used for bearing the bottom shell, the upper cover is arranged above the bottom shell, and the posture of the upper cover is adapted to the posture of the bottom shell.

As a preferable structure of the present utility model, the clamping assembly further includes a fixing frame, the holding jaw and the rotating jaw are slidably connected to the fixing frame, the holding jaw slides along an axial direction of the bottom case to abut against the bottom case, and the rotating jaw slides along an axial direction of the upper cover to abut against the upper cover.

As a preferable structure of the present utility model, the clamping assembly further includes a sliding plate slidably connected to the fixing frame, the holding jaw and the rotating jaw are connected to the sliding plate, and the rotating jaw is disposed above the holding jaw.

As a preferable structure of the present utility model, the bottom case has a guide slope, the holding jaw is provided with a profiling surface, and when the holding jaw slides along an axial direction of the bottom case, the profiling surface can be abutted against the guide slope so that the holding jaw holds the bottom case; and/or the number of the groups of groups,

The holding clamping jaw and the rotating clamping jaw are detachably connected to the sliding plate.

As a preferable structure of the present utility model, the feeding assembly further includes a mechanical arm, and the mechanical arm is configured to place the upper cover above the bottom case.

As a preferable structure of the present utility model, the screw assembly device further includes an upper camera assembly facing the flow line, the upper camera assembly being for detecting a posture of the bottom case.

As a preferable structure of the present utility model, the screwing assembly device further includes a lower camera assembly communicatively connected to the mechanical arm and the upper camera assembly, the lower camera assembly being configured to detect an initial posture of the upper cover, the mechanical arm being configured to rotate the upper cover around an axial direction of the upper cover so that the posture of the upper cover is adapted to the posture of the bottom case.

As a preferable structure of the utility model, the screwing assembly device further comprises a bin assembly, the bin assembly is provided with a plurality of upper cover carriers, the upper cover carriers are used for bearing the upper cover, and the mechanical arm can reciprocate between the upper cover carriers and the bottom shell carriers.

As a preferable structure of the present utility model, the screw assembling device further includes a height detecting assembly for detecting a height of the bottom chassis.

The utility model has the beneficial effects that:

The rotary driving assembly comprises a driving piece, a torque sensor and a damper, wherein the torque sensor is in communication connection with the driving piece, and the driving piece is used for driving the rotary clamping jaw to axially rotate around the upper cover so as to enable the upper cover to be in threaded connection with the bottom shell, and connection between the upper cover and the bottom shell is achieved. One end of the damper is connected with the rotary clamping jaw, the other end of the damper is connected with the driving piece, the damper can provide torsional resistance, and the phenomenon that the product is damaged due to overlarge torsional force of the driving piece is avoided. The torque sensor is configured to detect an output torque of the driving member, and the driving member is able to stop the operation when the output torque is greater than a preset torque. The preset torque is a standard torque for screwing the upper cover on the bottom shell to be assembled in place, the standard torque comprises a standard torsion force and a standard torsion angle, and in the actual assembly process, the driving piece can set an actual torsion angle slightly larger than the standard torsion angle so as to ensure the assembly in place. When the torque sensor detects that the output torque of the driving piece is larger than the preset torque, the driving piece is controlled to stop acting through the control module; in the screwing assembly process, the damper can increase torsional resistance, product damage caused by overlarge torque is avoided, the assembly precision of the upper cover and the bottom shell is ensured, the product yield is improved, no labor is required in the assembly process, and the product processing cost is reduced.

Drawings

Fig. 1 is a schematic structural view of a screwing assembly device according to an embodiment of the present utility model;

Fig. 2 is a schematic view of a part of a screw assembly device according to an embodiment of the present utility model;

Fig. 3 is a schematic structural view of a clamping assembly and a rotary driving assembly according to an embodiment of the present utility model.

In the figure:

1. A clamping assembly; 11. holding the clamping jaw tightly; 111. profiling surface; 12. rotating the clamping jaw; 121. a movable clamping jaw; 13. a fixing frame; 14. a sliding plate; 2. a rotary drive assembly; 21. a driving member; 22. a torque sensor; 23. a damper; 3. a feeding assembly; 31. a mechanical arm; 4. an upper camera assembly; 5. a lower camera assembly; 6. a bin assembly; 61. a cover carrier; 7. and a height detection assembly.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a screw assembly device for assembling an upper cover and a bottom case (not shown) of a product, which are screw-coupled to each other.

The screw assembly device comprises a clamping assembly 1 and a rotary drive assembly 2. The clamping assembly 1 comprises a hugging clamping jaw 11 and a rotating clamping jaw 12, wherein the hugging clamping jaw 11 is used for clamping a bottom shell, and the rotating clamping jaw 12 is used for clamping an upper cover. The rotary driving assembly 2 comprises a driving piece 21, a torque sensor 22 and a damper 23, wherein the torque sensor 22 is in communication connection with the driving piece 21, and the driving piece 21 is used for driving the rotary clamping jaw 12 to axially rotate around the upper cover so as to enable the upper cover to be in threaded connection with the bottom cover, so that connection between the upper cover and the bottom cover is realized. One end of the damper 23 is connected with the rotary clamping jaw 12, the other end of the damper is connected with the driving piece 21, and the damper 23 can provide torsional resistance to avoid damage to products due to overlarge torsional force of the driving piece 21. The torque sensor 22 is configured to detect an output torque of the driver 21, and when the output torque is greater than a preset torque, the driver 21 can stop the operation. The preset torque is a standard torque for screwing the upper cover on the bottom case to be assembled in place, the standard torque includes a standard torsion force and a standard torsion angle, and in the actual assembly process, the driving member 21 can set an actual torsion angle slightly larger than the standard torsion angle to ensure the assembly in place. When the torque sensor 22 detects that the output torque of the driving piece 21 is larger than the preset torque, the driving piece 21 is controlled to stop acting through the control module; the stopping of the driving member 21 can be performed by power-off or the like. In the screwing assembly process, the damper 23 can increase torsional resistance, product damage caused by overlarge torque is avoided, the assembly precision of the upper cover and the bottom shell is ensured, the product yield is improved, no labor is required in the assembly process, and the product processing cost is reduced.

The specific structures and working principles of the torque sensor 22, the damper 23 and the control module are known in the art, and the detailed description of the embodiment is omitted herein. In this embodiment, the driving member 21 adopts a hollow rotary platform, which is also called a digitalized rotary platform, and has the advantages of high rigidity, high rotation precision, high repeated positioning precision, and the like, and can realize any rotation angle, thereby meeting the torsion angle requirement of the rotary clamping jaw 12.

In one embodiment, the screwing assembly device further comprises a feeding assembly 3, wherein the feeding assembly 3 comprises a flow line (not shown in the figure) and a bottom shell carrier, the flow line is used for conveying the bottom shell carrier, and the bottom shell carrier is used for bearing the bottom shell; on the bottom shell carrier, the upper cover is arranged above the bottom shell, and the posture of the upper cover is matched with the posture of the bottom shell to form an initial state, so that the clamping assembly 1 and the rotary driving assembly 2 can conveniently act. The flow line can adopt a conveying structure such as a conveying belt and the like to convey the bottom shell carrier to the clamping assembly 1. The present embodiment does not limit the specific structures of the flow line and the bottom chassis carrier.

In one embodiment, the clamping assembly 1 further includes a fixing frame 13, as shown in fig. 3, the holding clamping jaw 11 and the rotating clamping jaw 12 are slidably connected to the fixing frame 13, the holding clamping jaw 11 slides along the axial direction of the bottom shell to abut against the bottom shell, and the rotating clamping jaw 12 slides along the axial direction of the upper cover to abut against the upper cover, so as to clamp the bottom shell and the upper cover respectively.

Preferably, the clamping assembly 1 further comprises a sliding plate 14, as shown in fig. 3, the sliding plate 14 is slidably connected to the fixing frame 13, the holding clamping jaw 11 and the rotating clamping jaw 12 are connected to the sliding plate 14, and the rotating clamping jaw 12 is disposed above the holding clamping jaw 11. The distance between the holding jaw 11 and the rotating jaw 12 remains unchanged, and when the sliding plate 14 slides, the holding jaw 11 abuts against the bottom shell, and at the same time, the rotating jaw 12 can abut against the upper cover. The sliding plate 14 can be driven by a driving mechanism such as an air cylinder or a linear module, so that sliding is realized, the structure is simpler, and the position change of the holding clamping jaw 11 and the rotating clamping jaw 12 can be realized only through one driving structure.

In one embodiment, the bottom shell is provided with a guide inclined surface, and the holding clamping jaw 11 is provided with a profiling surface 111, as shown in fig. 3; when the holding clamping jaw 11 slides along the axial direction of the bottom shell, the profiling surface 111 can be abutted against the guide inclined surface so that the holding clamping jaw 11 clamps the bottom shell; in this embodiment, one end of the bottom shell is a large-diameter end, the other end is a small-diameter end, and a guiding inclined plane is disposed between the two ends, so that the profiling surface 111 is also inclined. When the holding jaw 11 slides in the axial direction of the bottom shell from top to bottom above the bottom shell, the profiling surface 111 gradually abuts against the guide inclined surface, and further clamps the bottom shell. This construction of the clasping jaw 11 does not require an additional power source to drive, and clamping of the bottom shell can be achieved.

In one embodiment, the hugging jaw 11 and the rotating jaw 12 are detachably connected to the slide plate 14. Therefore, screwing assembly of bottom shells of different models can be achieved by replacing the clasping clamping jaw 11 with different profiling surfaces 111 and the rotating clamping jaw 12 with different specifications and sizes. As shown in fig. 2, two different gauge sizes of rotating jaws 12 and two different hugging jaws 11 having different contoured surfaces 111 are illustrated. In the different embodiments, the profile surface 111 has different profiles according to the different profiles of the guiding inclined surface of the bottom case, which is not limited by the drawings of the present embodiment.

Optionally, the rotating clamping jaw 12 comprises two opposite movable clamping jaws 121, and the two movable clamping jaws 121 are controlled to be close to or far away from each other through an air cylinder, so that the upper cover is clamped and unclamped. After the rotating clamping jaw 12 abuts against the upper cover, the upper cover is clamped by the action of the two movable clamping jaws 121.

In an embodiment, the feeding assembly 3 further includes a mechanical arm 31, and the mechanical arm 31 is configured to place the upper cover above the bottom shell. The mechanical arm 31 can clamp the upper cover through clamping structures such as adsorption, clamping or clamping, has a moving function in multiple directions, can move the upper cover, and finally accurately places the upper cover above the bottom shell.

In one embodiment, the screwing assembly device further comprises an upper camera assembly 4, the upper camera assembly 4 faces the flow line, and the upper camera assembly 4 is used for detecting the posture of the bottom shell. It can be understood that the bottom shell and the upper cover are respectively provided with connecting threads, the initial positions of the connecting threads required for correct screwing and assembling of the bottom shell and the upper cover are relatively accurate, and the positions of the connecting threads of the bottom shell, namely the positions of the connecting threads of the bottom shell, are detected to be used as positioning references during assembling. The upper camera assembly 4 detects the bottom chassis from above the bottom chassis.

Correspondingly, the screwing assembly device further comprises a lower camera assembly 5, the lower camera assembly 5 is in communication connection with the mechanical arm 31 and the upper camera assembly 4, the lower camera assembly 5 is used for detecting the initial posture of the upper cover, and the detection result is compared with the detection result of the upper camera assembly 4, so that whether the initial positions of the bottom shell and the upper cover in the circumferential direction are correct or not is judged. The lower camera assembly 5 detects the upper cover from below the upper cover, and when there is a deviation between the initial positions of the bottom cover and the upper cover, the mechanical arm 31 can rotate the upper cover around the axial direction of the upper cover to enable the posture of the upper cover to be adapted to the posture of the bottom cover with the bottom cover as a positioning reference during assembly.

In an embodiment, the screwing assembly device further includes a bin assembly 6, where the bin assembly 6 has a plurality of upper cover carriers 61, the upper cover carriers 61 are used for carrying upper covers, and the mechanical arm 31 can reciprocate between the upper cover carriers 61 and the bottom shell carriers, so as to transfer and place the upper covers above the bottom shells on the bottom shell carriers. The bin assembly 6 can buffer the plurality of upper covers, and assembly efficiency is improved.

In one embodiment, the screwing assembly device further comprises a height detection assembly 7, wherein the height detection assembly 7 is used for detecting the height of the bottom shell. When the height detecting assembly 7 detects that the height of the bottom shell does not meet the preset height, it indicates that the bottom shell feeding on the bottom shell carrier is poor, and the poor is possibly caused by inclination of the bottom shell or unqualified in size of the bottom shell, so that the bottom shell with poor feeding needs to be removed and is not assembled.

The specific structure and operation principle of the upper camera assembly 4, the lower camera assembly 5 and the height detection assembly 7 are prior art in the field, and the description of this embodiment is omitted here.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The screw assembly device is used for assembling an upper cover and a bottom shell, and the upper cover is in threaded connection with the bottom shell, and is characterized in that the screw assembly device comprises:

the clamping assembly (1), the clamping assembly (1) comprises a holding clamping jaw (11) and a rotating clamping jaw (12), the holding clamping jaw (11) is used for clamping the bottom shell, and the rotating clamping jaw (12) is used for clamping the upper cover;

The rotary driving assembly (2), the rotary driving assembly (2) comprises a driving piece (21), a torque sensor (22) and a damper (23), the torque sensor (22) is in communication connection with the driving piece (21), the driving piece (21) is used for driving the rotary clamping jaw (12) to rotate around the axial direction of the upper cover so that the upper cover is in threaded connection with the bottom shell, one end of the damper (23) is connected with the rotary clamping jaw (12), the other end of the damper is connected with the driving piece (21), the torque sensor (22) is configured to detect the output torque of the driving piece (21), and when the output torque is larger than the preset torque, the driving piece (21) can stop moving.

2. The screw assembly device according to claim 1, further comprising a feeding assembly (3), the feeding assembly (3) comprising a flow line for transporting the bottom shell carrier for carrying the bottom shell and a bottom shell carrier, the upper cover being placed above the bottom shell, and the posture of the upper cover being adapted to the posture of the bottom shell.

3. The screwing assembly device according to claim 2, wherein the clamping assembly (1) further comprises a fixed frame (13), the clasping jaw (11) and the rotating jaw (12) being slidably connected to the fixed frame (13), the clasping jaw (11) sliding along the axial direction of the bottom shell to abut the bottom shell, the rotating jaw (12) sliding along the axial direction of the top cover to abut the top cover.

4. A screwing assembly device according to claim 3, wherein the clamping assembly (1) further comprises a sliding plate (14), the sliding plate (14) being slidably connected to the fixed frame (13), the holding jaw (11) and the rotating jaw (12) being connected to the sliding plate (14), and the rotating jaw (12) being arranged above the holding jaw (11).

5. The screwing assembly device according to claim 4, characterized in that said bottom shell has a guiding inclined plane, said enclasping jaw (11) is provided with a profiling surface (111), said profiling surface (111) being able to abut against said guiding inclined plane when said enclasping jaw (11) slides along the axial direction of said bottom shell, so as to cause said enclasping jaw (11) to clamp said bottom shell; and/or the number of the groups of groups,

The clasping clamping jaw (11) and the rotating clamping jaw (12) are detachably connected to the sliding plate (14).

6. The screw assembly device according to claim 2, wherein the loading assembly (3) further comprises a mechanical arm (31), the mechanical arm (31) being adapted to place the upper cover over the bottom shell.

7. The screw assembly device according to claim 6, further comprising an upper camera assembly (4), the upper camera assembly (4) being directed towards the flow line, the upper camera assembly (4) being adapted to detect the attitude of the bottom shell.

8. The screw assembly device according to claim 7, further comprising a lower camera assembly (5), the lower camera assembly (5) communicatively connecting the mechanical arm (31) and the upper camera assembly (4), the lower camera assembly (5) being configured to detect an initial attitude of the upper cover, the mechanical arm (31) being configured to rotate the upper cover about an axial direction of the upper cover to adapt the attitude of the upper cover to the attitude of the bottom case.

9. The screw assembly device according to claim 6, further comprising a silo assembly (6), the silo assembly (6) having a plurality of upper cover carriers (61), the upper cover carriers (61) being adapted to carry the upper cover, the robotic arm (31) being reciprocally movable between the upper cover carriers (61) and the bottom shell carriers.

10. Screw assembly device according to any one of claims 1-9, characterized in that the screw assembly device further comprises a height detection assembly (7), the height detection assembly (7) being adapted to detect the height of the bottom shell.