CN219853100U

CN219853100U - Variable-pitch screwing mechanism

Info

Publication number: CN219853100U
Application number: CN202321012669.3U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Liyuanheng New Energy Technology Shanghai Co ltd
Current assignee: Liyuanheng New Energy Technology Shanghai Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-10-20
Anticipated expiration: 2033-04-28

Abstract

The utility model relates to the technical field of bolt tightening equipment, in particular to a variable-pitch tightening mechanism, which comprises a frame, a supporting component, a lifting frame and a tightening component, wherein the supporting component is arranged at the bottom end of the frame and is used for placing a product to be tightened, the lifting frame is slidably arranged on the frame towards the supporting component, the tightening component is rotatably arranged on the lifting frame, a variable-pitch component is slidably arranged on the tightening component, a plurality of tightening shafts are arranged on the variable-pitch component, and pass through the tightening component and the lifting frame and face the supporting component, and the variable-pitch component is used for adjusting the distance between the tightening shafts. The tightening shaft is driven to rotate through rotation of the tightening assembly, and therefore a plurality of bolts on a product to be tightened are tightened. The distance between the tightening shafts is adjusted through the distance-changing assembly, so that the relative distance between the tightening shafts is adjusted, products with different circumferential sizes are matched, and compatibility is improved.

Description

Variable-pitch screwing mechanism

Technical Field

The utility model relates to the technical field of bolt tightening equipment, in particular to a variable-pitch tightening mechanism.

Background

In the automotive motor processing field, the bolt tightening device is often used, and in the motor assembly process, bolts with different reference circles may need to be simultaneously tightened diagonally, and at this time, the center distance between two tightening shafts needs to be adjusted. The center distance of the tightening shaft on the existing bolt tightening equipment is fixed, so that the bolt tightening equipment is not suitable for carrying out bolt tightening processing on products with different circumferences, and the problem of poor compatibility exists.

Disclosure of Invention

In order to solve one of the technical problems, the utility model provides a variable-pitch tightening mechanism, which comprises a frame, a supporting component arranged at the bottom end of the frame and used for placing a product to be tightened, a lifting frame slidably arranged on the frame towards the supporting component, and a tightening component rotatably arranged on the lifting frame, wherein a variable-pitch component is slidably arranged on the tightening component, a plurality of tightening shafts are arranged on the variable-pitch component, pass through the tightening component and the lifting frame and face the supporting component, and the variable-pitch component is used for adjusting the distance between the tightening shafts. The tightening shaft is driven to rotate through rotation of the tightening assembly, and therefore a plurality of bolts on a product to be tightened are tightened. The distance between the tightening shafts is adjusted through the distance-changing assembly, so that the relative distance between the tightening shafts is adjusted, products with different circumferential sizes are matched, and compatibility is improved.

Preferably, the tightening assembly comprises a first gear rotatably connected with the lifting frame, a second gear meshed with the first gear, and a first driving piece with a driving end connected with the second gear, wherein a turntable is fixedly arranged on the first gear. The second gear is driven to rotate through the first driving piece, the first gear is driven to rotate, the distance changing assembly on the rotary table and the tightening shaft rotate, and then the bolts on the product to be tightened are tightened through the tightening shaft.

Preferably, the distance changing assembly comprises a plurality of moving blocks which are arranged on the rotary table in a sliding manner, and second driving pieces which are arranged on the moving blocks, wherein each moving block is provided with a tightening shaft, and the second driving pieces are used for driving the moving blocks to move relatively so as to adjust the distance between two adjacent moving blocks. Therefore, the distance between the two moving blocks can be adjusted according to the positions of the bolts on the product, the distance between the tightening shafts on the moving blocks can be adjusted, products with different sizes can be adapted, and compatibility can be improved.

Preferably, a limiting component is arranged on the turntable and located on one side of the moving block, and the limiting component is used for limiting the position of the moving block. And when the second driving piece drives the moving block to move relatively, the limiting assembly limits the moving block, so that the maximum distance and the minimum distance between the two tightening shafts are controlled.

Preferably, the limiting assembly comprises a first limiting block arranged on the rotary table and first limiting pieces arranged at two ends of the first limiting block, one side, facing the first limiting block, of the moving block is provided with an abutting block, and the abutting block extends to a position between the two first limiting pieces. And when the second driving piece drives the moving block to move relatively, the second driving piece abuts against the first limiting piece at two ends of the first limiting piece through the abutting piece, so that the moving block is limited, and the maximum center distance and the minimum center distance between the two tightening shafts are controlled.

Preferably, the turntable is provided with a sliding rail, the moving block is in sliding fit with the sliding rail through a sliding block, a sliding rail clamp is arranged on the sliding block, and the sliding rail clamp is used for locking the sliding block and the sliding rail. After the distance between the moving blocks is adjusted, the sliding blocks and the sliding rails are locked through the sliding rail clamp, so that the sliding blocks and the sliding rails are prevented from moving relatively in the screwing process.

Preferably, the lifting device further comprises two groups of second limiting blocks and second limiting pieces, wherein the second limiting blocks and the second limiting pieces are respectively arranged on two opposite sides of the rotary table, the second limiting blocks are arranged on the lifting frame, and the second limiting pieces are arranged on the rotary table. The second limiting piece is abutted to the second limiting piece so as to limit the rotation of the turntable, so that the equipment is prevented from being damaged due to excessive rotation caused by the fact that the first driving piece is not well controlled during debugging, and the safety is improved.

Preferably, a lifting driving assembly is arranged on the frame, and the driving end of the lifting driving assembly is connected with the lifting frame. The lifting drive assembly drives the lifting frame to slide towards the supporting assembly, so that the tightening shaft acts on the bolt of the product to be tightened on the supporting assembly, the tightening shaft is driven to rotate through rotation of the tightening assembly, and therefore the tightening processing of a plurality of bolts on the product to be tightened is achieved.

Preferably, the support assembly comprises a mounting base, a tray movably arranged on the mounting base, and a third driving piece arranged on the mounting base, wherein the third driving piece is used for driving the tray to move towards the lifting frame. The third driving piece drives the tray to ascend, so that the tray is separated from the roller way, the lifting frame descends, the tightening shaft acts on the bolt of the product to be tightened of the supporting assembly, and the roller way is prevented from being stressed when the product is tightened.

Preferably, a fixing rod for fixing the product to be screwed is arranged on the surface of the lifting frame facing the supporting component. The fastening device comprises a fixing rod, a supporting component and a fastening shaft, wherein the fixing rod is arranged at the end, facing the supporting component, of the fixing rod, the fastening shaft is inserted into the center of a product to be screwed, the fastening shaft is used for preventing the product to be screwed from rotating, the product to be screwed is further fixed, and the product is further prevented from rotating along with the bolt when the bolt is screwed.

Compared with the prior art, the utility model has the beneficial effects that: according to the technical scheme, the support assembly is arranged on the frame, the lifting frame is arranged on the frame in a sliding manner, the support assembly is used for placing a product to be screwed, the lifting frame can slide towards the support assembly, the screwing assembly is rotatably arranged on the lifting frame, the screwing assembly is provided with the distance-changing assembly in a sliding manner, the distance-changing assembly is provided with the plurality of screwing shafts, the screwing shafts penetrate through the screwing assembly and the lifting frame and face the support assembly, the lifting frame is driven to slide towards the support assembly, the screwing shafts act on bolts of the product to be screwed, and the screwing shafts are driven to rotate through rotation of the screwing assembly, so that screwing of a plurality of bolts on the product to be screwed is achieved. The variable-pitch assembly is used for adjusting the distance between a plurality of tightening shafts, and products with different circumferential sizes are adapted by adjusting the relative distance between the tightening shafts, so that compatibility is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present utility model or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from them without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of a torque converter mechanism according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of a tightening assembly and a pitch change assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of the structure of a tightening assembly and a pitch change assembly according to an embodiment of the present utility model;

FIG. 4 is an enlarged view of portion A of FIG. 3 in accordance with an embodiment of the present utility model;

fig. 5 is a perspective view of a variable pitch tightening mechanism according to an embodiment of the present utility model.

Reference numerals

10. A frame; 11. a lifting driving assembly; 20. a lifting frame; 21. a second limiting block; 22. a second limiting piece; 30. tightening the assembly; 31. a first gear; 32. a second gear; 33. a turntable; 331. a slide rail; 332. a slide block; 333. a slide rail clamp; 34. a first driving member; 40. tightening the shaft; 50. a pitch varying assembly; 51. a moving block; 511. an abutment block; 52. a second driving member; 53. a limit component; 531. a first limiting block; 532. a first limiting member; 60. a support assembly; 61. a tray; 62. a third driving member; 63. and (5) installing a base.

Detailed Description

Various embodiments of the utility model are disclosed in the following drawings, in which details of the practice are set forth in the following description for the purpose of clarity. However, it should be understood that these practical details are not to be taken as limiting the utility model. That is, in some embodiments of the utility model, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indications such as up, down, left, right, front, and rear … … in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture such as that shown in the drawings, and if the particular posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the utility model solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

For a further understanding of the nature, features, and efficacy of the present utility model, the following examples are set forth in order to provide a further understanding of the utility model, and are intended to be described in connection with the accompanying drawings:

in order to solve the above-mentioned technical problem, this embodiment provides a variable-pitch tightening mechanism, as shown in fig. 1, including a frame 10, a support assembly 60 disposed at the bottom end of the frame 10, and a lifting frame 20 slidably disposed on the frame 10, the support assembly 60 is used for placing a product to be tightened, the lifting frame 20 is slidable towards the support assembly 60, a tightening assembly 30 is rotatably disposed on the lifting frame 20, a variable-pitch assembly 50 is slidably disposed on the tightening assembly 30, a plurality of tightening shafts 40 are disposed on the variable-pitch assembly 50, the tightening shafts 40 penetrate the tightening assembly 30 and the lifting frame 20 and face the support assembly 60, and then the lifting frame 20 is driven to slide towards the support assembly 60, so that the tightening shafts 40 act on bolts of the product to be tightened, and the tightening shafts 40 are driven to rotate by rotation of the tightening assembly 30, so as to achieve tightening of a plurality of bolts on the product to be tightened. The pitch varying assembly 50 is used for adjusting the distance between the plurality of tightening shafts 40, and by adjusting the relative distance between the tightening shafts, products with different circumferential dimensions can be adapted, and compatibility can be improved.

Specifically, in order to rotate the tightening assembly 30 to rotate the tightening shaft 40, as shown in fig. 2 to 3, the tightening assembly 30 includes a first gear 31 rotatably connected to the lifting frame 20, a second gear 32 engaged with the first gear 31, and a first driving member 34 having a driving end connected to the second gear 32, the first driving member 34 is disposed at the bottom of the lifting frame 20, a turntable 33 is fixedly disposed on the first gear 31, and the pitch changing assembly 50 and the tightening shaft 40 are disposed on the turntable 33. The first driving member 34 is an electric motor, the second gear 32 is disposed at a driving end of the electric motor, and the second gear 32 is driven to rotate by the first driving member 34, so as to drive the first gear 31 to rotate, so that the pitch-changing assembly 50 and the tightening shaft 40 on the turntable 33 rotate, and a plurality of bolts on a product to be tightened are further tightened by the tightening shaft 40.

In order to realize the screwing processing of the bolts of the products with different sizes, the variable-pitch assembly 50 comprises a plurality of moving blocks 51 which are arranged on the rotary table 33 in a sliding manner and second driving pieces 52 which are arranged on the moving blocks 51, each moving block 51 is provided with a screwing shaft 40, the second driving pieces 52 are used for driving the moving blocks 51 to move relatively, the second driving pieces 52 can be cylinders, and further, the distance between two adjacent moving blocks 51 is adjusted, so that the distance between the two moving blocks 51 can be adjusted according to the positions of the bolts on the products, the distance between the screwing shafts 40 on the moving blocks 51 is adjusted, products with different sizes are adapted, and compatibility is improved.

Further, in the above-mentioned scheme, the turntable 33 is provided with the limiting component 53 on one side of the moving block 51, the limiting component 53 is used for limiting the position of the moving block 51, and when the second driving piece 52 drives the moving block 51 to move relatively, the limiting component 53 is used for limiting the moving block 51, so as to control the maximum distance and the minimum distance between the two tightening shafts 40.

Specifically, as shown in fig. 4, the limiting component 53 includes a first limiting block 531 disposed on the turntable 33, and first limiting members 532 disposed at two ends of the first limiting block 531, where the moving block 51 is disposed on one side of the moving block 51 facing the first limiting block 531, and the abutting block 511 extends between the two first limiting members 532, and when the second driving member 52 drives the moving block 51 to move relatively, the abutting block 511 abuts against the first limiting members 532 at two ends of the first limiting block 531, so as to limit the moving block 51, thereby controlling the maximum center distance and the minimum center distance between the two tightening shafts.

In the above-mentioned scheme, as shown in fig. 2, the turntable 33 is provided with the slide rail 331, the moving block 51 is slidably matched with the slide rail 331 through the slide block 332, and the slide block 332 and the slide rail 331 slide in the process of screwing the bolt by the screwing assembly 30, therefore, the slide block 332 is provided with the slide rail clamp 333, and after the distance between the moving block 51 is adjusted, the slide block 332 and the slide rail 331 are locked through the slide rail clamp 333, so that the slide block 332 and the slide rail 331 are ensured not to move relatively in the screwing process.

As shown in fig. 3, the device further comprises two groups of second limiting blocks 21 and second limiting pieces 22 respectively positioned on two opposite sides of the turntable 33, wherein the second limiting blocks 21 are arranged on the lifting frame 20, and the second limiting pieces 22 are arranged on the turntable 33. When the first driving piece 34 drives the first gear 31 and the rotary table 33 to rotate, the second limiting piece 22 is abutted against the second limiting piece 21, so that the rotary table 33 is limited in rotation, excessive rotation caused by the fact that the first driving piece 34 is not well controlled during debugging is prevented, and safety is improved. The device also comprises two limit position detectors 23, wherein the limit position detectors 23 are respectively arranged on two opposite sides of the lifting frame on the turntable, and the two positions are the origin and the end of each other and are used for detecting and calibrating the position of the motor.

The frame 10 is provided with a lifting driving assembly 11, and the driving end of the lifting driving assembly 11 is connected to the lifting frame 20. The lifting driving assembly 11 can be composed of a motor and a screw rod, the screw rod is connected to the lifting frame 20, the lifting frame 20 is driven to slide towards the supporting assembly 60 through the lifting driving assembly 11, the tightening shaft 40 is enabled to act on a bolt of a product to be tightened of the supporting assembly 60, the tightening shaft 40 is driven to rotate through rotation of the tightening assembly 30, and therefore multiple bolts on the product to be tightened are screwed.

As shown in fig. 5, the support assembly 60 includes a mounting base 63, a tray 61 movably disposed on the mounting base 63, and a third driving member 62 disposed on the mounting base 63, the third driving member 62 being configured to drive the tray 61 to move toward the lifter 20. Illustratively, the third driving member 62 is an air cylinder, and after the product to be screwed is placed on the tray 61, the tray 61 is driven to ascend by the third driving member 62, so that the tray 61 is separated from the roller way, and the lifting frame 20 descends to enable the screwing shaft 40 to act on the bolt of the product to be screwed of the supporting assembly 60, so that the roller way is ensured not to be stressed during screwing.

A fixing rod 23 for fixing the product to be screwed is provided at a surface of the elevation frame 20 facing the support assembly 60. Illustratively, a fastener is provided at an end of the fixing rod 23 facing the support assembly 60, and is inserted into the center of the product to be fastened by the fastener, and the fastener is used to prevent the product to be fastened from rotating, thereby fixing the product to be fastened, and thus the fastening shaft 40 prevents the product from rotating together with the bolt when the bolt is fastened.

In summary, in one or more embodiments of the present utility model, a supporting component is disposed on a rack, and a lifting frame is slidably disposed on the rack, where the supporting component is used for placing a product to be screwed, the lifting frame can slide towards the supporting component, a screwing component is rotatably disposed on the lifting frame, a distance-changing component is slidably disposed on the screwing component, a plurality of screwing shafts are disposed on the distance-changing component, the screwing shafts penetrate through the screwing component and the lifting frame and face the supporting component, and further the lifting frame is driven to slide towards the supporting component, so that the screwing shafts act on bolts of the product to be screwed, and the screwing shafts are driven to rotate by rotation of the screwing component, so as to screw a plurality of bolts on the product to be screwed. The variable-pitch assembly is used for adjusting the distance between a plurality of tightening shafts, and products with different circumferential sizes are adapted by adjusting the relative distance between the tightening shafts, so that compatibility is improved.

The above-described embodiments do not limit the scope of the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the above embodiments should be included in the scope of the present utility model.

Claims

1. The utility model provides a mechanism is screwed up to displacement which characterized in that: including frame (10), set up in just be used for placing on frame (10) support assembly (60) of waiting to screw up the product, can be oriented support assembly (60) slip set up in crane (20) on frame (10) and rotatable set up in screw up subassembly (30) on crane (20), it is provided with displacement subassembly (50) to screw up to slide on subassembly (30), be provided with a plurality of on displacement subassembly (50) and screw up axle (40), screw up axle (40) and pass screw up subassembly (30) and crane (20) and orientation support assembly (60), displacement subassembly (50) are used for adjusting a plurality of screw up the distance between axle (40).

2. The torque converter tightening mechanism of claim 1, wherein: the tightening assembly (30) comprises a first gear (31) rotatably connected to the lifting frame (20), a second gear (32) meshed with the first gear (31), and a first driving piece (34) with a driving end connected to the second gear (32), wherein a turntable (33) is fixedly arranged on the first gear (31).

3. The torque converter tightening mechanism of claim 2, wherein: the pitch-changing assembly (50) comprises a plurality of moving blocks (51) which are arranged on the rotary table (33) in a sliding mode, and second driving pieces (52) which are arranged on the moving blocks (51), each moving block (51) is provided with one tightening shaft (40), and the second driving pieces (52) are used for driving the moving blocks (51) to move relatively so as to adjust the distance between two adjacent moving blocks (51).

4. A torque converter according to claim 3, wherein: and a limiting component (53) is arranged on one side of the rotary table (33) positioned on the moving block (51), and the limiting component (53) is used for limiting the position of the moving block (51).

5. The torque converter tightening mechanism of claim 4, wherein: the limiting assembly (53) comprises a first limiting block (531) arranged on the rotary table (33), first limiting pieces (532) arranged at two ends of the first limiting block (531), one side, facing the first limiting block (531), of the moving block (51) is provided with an abutting block (511), and the abutting block (511) extends to between the two first limiting pieces (532).

6. A torque converter according to claim 3, wherein: the rotary table (33) is provided with a sliding rail (331), the moving block (51) is in sliding fit with the sliding rail (331) through a sliding block (332), a sliding rail clamp (333) is arranged on the sliding block (332), and the sliding rail clamp (333) is used for locking the sliding block (332) and the sliding rail (331).

7. A torque converter according to claim 3, wherein: the lifting device further comprises two groups of second limiting blocks (21) and second limiting parts (22) which are respectively positioned on two opposite sides of the rotary table (33), wherein the second limiting blocks (21) are arranged on the lifting frame (20), and the second limiting parts (22) are arranged on the rotary table (33).

8. The torque converter tightening mechanism of claim 1, wherein: the lifting driving assembly (11) is arranged on the frame (10), and the driving end of the lifting driving assembly (11) is connected with the lifting frame (20).

9. The torque converter tightening mechanism of claim 1, wherein: the support assembly (60) comprises a mounting base (63), a tray (61) movably arranged on the mounting base (63) and a third driving piece (62) arranged on the mounting base (63), wherein the third driving piece (62) is used for driving the tray (61) to move towards the lifting frame (20).

10. The torque converter tightening mechanism of claim 1, wherein: the surface of the lifting frame (20) facing the supporting component (60) is provided with a fixing rod (23) for fixing a product to be screwed.