CN216990229U

CN216990229U - High-speed in-mold tapping transmission mechanism

Info

Publication number: CN216990229U
Application number: CN202220358431.5U
Authority: CN
Inventors: 李生辉; 李文辉
Original assignee: Dongguan Shenzhen Precision Machinery Co ltd
Current assignee: Dongguan Shenzhen Precision Machinery Co ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-19
Anticipated expiration: 2032-02-22

Abstract

The utility model discloses a high-speed in-mold tapping transmission mechanism, which comprises a rotating part, a connecting platform, a tapping part and a chassis, wherein the rotating part comprises a rotating shaft and a transmission gear, the transmission gear is sleeved on the surface of the rotating shaft, and a thread is arranged on the surface of the rotating shaft along the axial direction; the connecting platform is provided with a threaded through hole matched with the thread on the rotating shaft; the tapping component comprises a driven gear, a screw tap clamp and a screw tap which are sequentially connected; the connecting table is provided with a clamp through hole matched with the screw tap clamp, the screw tap clamp penetrates through the clamp through hole, the driven gear is arranged on the connecting table, and the driven gear is meshed with the transmission gear in a matched mode. The utility model provides a high-speed in-mold tapping transmission mechanism which realizes the rotation and vertical movement of a screw tap.

Description

High-speed in-mold tapping transmission mechanism

Technical Field

The utility model relates to the field of tapping equipment, in particular to a high-speed tapping transmission mechanism.

Background

A complete tapping process comprises the radial rotation of a screw tap and the axial movement of the screw tap, in the prior art, the current in-mold tapping technology (stamping continuous in-mold automatic tapping technology) uses the up-and-down movement of a stamping die as a power source, and utilizes transmission parts such as a screw rod, a gear and the like to transmit the movement to a screw tap clamp so as to enable the screw tap clamp to rotate in the radial direction and feed axially to force the screw tap to tap threads on a workpiece, the structure of the screw tap clamp of the current in-mold tapping machine is that an external thread which is coaxial with the screw tap and is consistent with the screw tap thread pitch is processed on the screw tap clamp and is called a pitch guide thread, the external thread is matched with a nut (called a pitch guide nut) which is fixed in the axial direction and the radial direction, during tapping, the screw tap clamp rotates by the gear transmission, the pitch guide thread and the nut are matched to move to force the screw tap clamp to move in the axial direction, thereby completing the tapping operation.

Thus, during tapping, the tap holder is subjected to a great tapping resistance and high-speed rotational friction — for providing threads on tap holders, there are drawbacks: 1. the tap fixture is required to bear a large axial force generated by tapping when tapping, and particularly, when a plurality of thread holes are simultaneously machined, the dimension of each tap fixture is limited by the pitch of the workpiece, and the diameter of the guide thread of the fixture is limited, so that the pitch guide thread is subjected to high-speed frictional heating and a large axial impact force when tapping at a high speed, and the pitch guide thread is easily damaged. 2. For threads with a relatively small pitch, because the pitch lead thread must conform to the tap pitch, for threads below M4, or fine threads with a pitch less than 0.8, the pitch lead thread is prone to heat and wear quickly leading to failure. In practical applications, this approach does not allow for stable high-speed tapping (130-200 per minute)

Disclosure of Invention

In order to solve the problems, the utility model provides a high-speed in-mold tapping transmission mechanism, which mainly aims to transfer a guide thread on a traditional tap clamp to an independent rotating part, realize the axial movement of the tap clamp by the independent rotating part, transmit the rotation of the rotating part to the tap clamp through a gear, and match the proportion of an axial feed distance to a tap pitch by changing the transmission ratio of the gear, so that the pitch guide thread is not limited by the pitch of the tap any more, the diameter size of the thread is not limited by the distance of a workpiece thread hole any more, and the thread pitch of the thread of the rotating part is enlarged proportionally, so that the guide thread is realized at a lower rotating speed, and the larger diameter meets the axial movement required by tap tapping. Because the rotating speed of the guide thread is reduced, the thread is thickened, so that the tapping machine is more wear-resistant and more stable, and high-speed and stable tapping operation is realized.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a high-speed in-mold tapping transmission mechanism, which comprises a rotating part, a connecting platform, a tapping part and a chassis,

the rotating component comprises a rotating shaft and a transmission gear, the transmission gear is sleeved on the surface of the rotating shaft, and an external thread is arranged on the surface of the rotating shaft along the axial direction;

the connecting platform is provided with guide rod through holes on two sides, and guide holes penetrating through the guide rod through holes and connected with the chassis are arranged in the guide rod through holes; the connecting platform is provided with a threaded through hole, and the rotating shaft is in threaded connection with the connecting platform;

the tapping component comprises a screw tap, a screw tap clamp and a driven gear sleeved on the screw tap clamp; the connecting table is provided with a clamp through hole matched with the screw tap clamp, the screw tap clamp penetrates through the clamp through hole and clamps a screw tap, the driven gear is further matched with the transmission gear, and the diameter of the through hole of the chassis is larger than the diameter of the screw tap clamp.

Further, the base plate is provided with a rotating shaft through hole corresponding to the rotating shaft and a base through hole corresponding to the screw tap clamp.

Further, the diameter of the through hole of the base plate is larger than the diameter of the screw tap clamp.

Furthermore, a bearing sleeved on the rotating shaft is arranged at the through hole of the rotating shaft on the chassis.

Furthermore, the connecting platform is provided with more than one tapping part station.

Further, including the box, rotary part, connection platform, attack tooth part locate inside the box, the box is connected fixedly with the chassis.

Furthermore, the lateral wall of box is equipped with the logical groove corresponding with drive gear.

Furthermore, a notch for accommodating the transmission gear is arranged on the connecting platform.

The utility model has the beneficial effects that: the screw thread on the screw tap clamp is transferred to the rotating shaft on the rotating component, so that the screw tap clamp is only responsible for the rotation of the screw tap, and the screw pitch of the rotating shaft is larger than that of the screw tap clamp, so that the rotation amount of the rotating shaft is far smaller than that of the screw tap clamp, the movement amount in the vertical direction can be achieved, and the heating damage of the rotating shaft is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the case.

Fig. 3 is a schematic structural view of the chassis.

Fig. 4 is a schematic view of the structure of the rotating member.

Fig. 5 is a schematic view of the structure of the connection stage.

Fig. 6 is a schematic view of the construction of the tapping unit.

Fig. 7 is an assembly view with the case omitted.

The reference numbers illustrate: 1. a box body; 11. a through groove; 2. a chassis; 21. a rotating shaft through hole; 22. a base through hole; a bearing; 3. a rotating member; 31. a rotating shaft; 32. a transmission gear; 33. a thread; 4. a connecting table; 41. a threaded through hole; 42. a notch; 43. a guide rod through hole; 44. a clamp through hole; 5. a tapping component; 51. a screw tap; a tap fixture; 53. a driven gear; 6. a guide rod.

Detailed Description

Referring to fig. 1-7, the present invention relates to a high-speed in-mold tapping transmission mechanism,

comprises a rotating component 3, a connecting platform 4, a tapping component 5 and a chassis 2,

the rotating component 3 comprises a rotating shaft 31 and a transmission gear 32, wherein the transmission gear 32 is arranged on the rotating shaft 31, and the rotating shaft 31 is provided with a thread 33 along the axial surface;

the connecting platform 4 is provided with guide rod through holes 43 at two sides of the connecting platform 4, and a guide rod 6 penetrates through the guide rod through holes 43 to be connected with the chassis 2; the connecting table 4 is provided with a threaded through hole 41, and the rotating shaft 31 is in threaded connection with the connecting table 4;

the tapping component 5 comprises a screw tap 51, a screw tap clamp 52 and a driven gear 53 sleeved on the screw tap clamp 52; the connecting table 4 is provided with a fixture through hole 44 matched with a tap fixture 52, the tap fixture 52 penetrates through the fixture through hole 44 and clamps a tap 51, and the driven gear 53 is meshed and matched with the transmission gear 32.

In a further preferred mode, the box body 1 is included, the rotating part 3, the connecting table 4 and the tapping part 5 are arranged inside the box body 1, and the box body 5 is fixedly connected with the chassis 2. The side wall of the box body 1 is provided with a through groove 11 corresponding to the transmission gear 32. The base plate 2 is provided with a rotation shaft through hole 21 corresponding to the rotation shaft 31 and a base through hole 22 corresponding to the tap holder 52. The diameter of the through hole 22 of the base plate is larger than that of the tap clamp 52. The chassis 2 is provided with a bearing 23 sleeved on the rotating shaft 31 at the rotating shaft through hole 21. The connecting table 4 is provided with more than one tapping component 5 station. The connecting table 4 is provided with a notch 42 for accommodating the transmission gear 32.

Referring to the box body 1 in fig. 1-7, a box cover of the box body 1 is fixedly connected with a side wall of the box body 1 through screws or other connection methods, a through groove 11 is formed in the side wall of the box body 1, when in use, the through groove 11 is engaged with a transmission gear 32 through an external gear to drive the transmission gear 32 to move, referring to the chassis 2 in fig. 2, the chassis 2 is connected with the box body 1, in order to realize the connection, threaded hole sites are arranged on the periphery of the chassis 2, and the chassis 2 is connected with the box body 1 through screws. The chassis 2 is provided with a rotation shaft through hole 21 corresponding to the rotation shaft 31. As shown in fig. 1, during tapping, the screw tap 51 extends out of the chassis 2, the chassis 2 is further provided with a chassis through hole 22, the diameter of the chassis through hole 22 is larger than that of the screw tap clamp 52, and the chassis 2 is further provided with a bearing 23 at the rotating shaft through hole 21 and sleeved on the rotating shaft 31. Furthermore, in order to improve the working efficiency, more than one tapping component 5 station is arranged on the connecting table 4 to realize the function of tapping multiple stations.

In the tapping machine in the prior art, three tapping forms are adopted, and the first tapping machine realizes tapping by manually controlling the vertical movement of a screw tap 51; the second is to use a screw tap holder with threads, and to realize the movement of the screw tap 51 in the vertical direction by rotating the screw tap holder with threads; the third is to control the movement of the tap 51 in the vertical direction by designing a movement mechanism.

The utility model improves the second tapping form, in the second tapping form, because the tapping is carried out at high speed, the tap clamp with threads on one side needs to complete the rotation of the tap 51 and the movement of the tap 51 in the vertical direction, if the tap clamp with threads is adopted, the movement of the tap 51 in the vertical direction is realized by rotating the tap clamp with threads, and in the process, the tap clamp is easily damaged by high-speed rotation, so that aiming at the technical problem, a new transmission mode is designed, the tap clamp 52 is only responsible for the rotation of the tap 51, and the tap clamp with threads in the prior art is used; the screw thread is transferred to other parts, the screw tap 51 is moved in the vertical direction by other parts, and meanwhile, the gear ratio and the screw pitch of the rotating shaft 31 are designed according to the requirements of actual conditions, so that the high-speed rotation heat generation is effectively reduced.

When the tap clamp is used, an external gear is meshed with the transmission gear 32, the operation of the transmission gear 32 is driven by the operation of the external gear, when the transmission gear 32 operates, the rotating shaft 31 drives the connecting table 4 to move in the vertical direction through the threaded through hole 41 in the connecting table 4, and the tapping component 5 is connected to the connecting table 4, so that the tapping component 5 moves in the vertical direction, and the thread of the tap clamp with the thread in the prior art is transferred to other components. In the present invention, it is known that the pitch of the rotary shaft 31 and the diameter of the rotary shaft 3 are larger than those of the screw tap holder of the related art, and by such a design, the same amount of screw tap displacement in the vertical direction can be obtained by a small amount of rotation of the rotary shaft 31 when using the present invention, as compared with the screw tap holder of the related art, and the screw tap holder 52 damaged by heat generated by high-speed rotation is reduced.

Meanwhile, the driven gear 53 of the tapping component 5 is driven by the transmission gear 32 to rotate, and the rotation of the driven gear 53 is transmitted to the tap 51 through the tap holder 52, so that the rotation of the tap 51 is completed.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and not restrictive, and various changes and modifications to the technical solutions of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are intended to fall within the scope of the present invention defined by the appended claims.

Claims

1. The utility model provides a tooth drive mechanism is attacked in high-speed mould which characterized in that: comprises a rotating part, a connecting platform, a tapping part and a chassis,

the connecting platform is provided with guide rod through holes on two sides, and guide holes penetrating through the guide rod through holes and connected with the chassis are arranged in the guide rod through holes; the connecting table is provided with a threaded through hole, and the rotating shaft is in threaded connection with the connecting table;

the tapping component comprises a screw tap, a screw tap clamp and a driven gear sleeved on the screw tap clamp; the connecting table is provided with a clamp through hole matched with the screw tap clamp, the screw tap clamp penetrates through the clamp through hole and clamps a screw tap, and the driven gear is matched with the transmission gear.

2. The high-speed in-mold tapping transmission mechanism according to claim 1, wherein: the base plate is provided with a rotating shaft through hole corresponding to the rotating shaft and a base through hole corresponding to the screw tap clamp.

3. The high-speed in-mold tapping transmission mechanism according to claim 2, wherein: the diameter of the through hole of the bottom plate is larger than the diameter of the screw tap clamp.

4. The high-speed in-mold tapping transmission mechanism according to claim 2, wherein: and a bearing sleeved on the rotating shaft is arranged at the through hole of the rotating shaft on the chassis.

5. The high-speed in-mold tapping transmission mechanism according to claim 1, wherein: the connecting table is provided with more than one tapping component station.

6. The high-speed in-mold tapping transmission mechanism according to claim 1, wherein: the rotary part, the connecting platform and the tapping part are arranged in the box body, and the box body is fixedly connected with the chassis.

7. The high-speed in-mold tapping transmission mechanism according to claim 6, wherein: and the side wall of the box body is provided with a through groove corresponding to the transmission gear.

8. The high-speed in-mold tapping transmission mechanism according to claim 1, wherein: the connecting table is provided with a notch for accommodating the transmission gear.