CN114932417A

CN114932417A - Motor rear cover continuous forming die

Info

Publication number: CN114932417A
Application number: CN202210586149.7A
Authority: CN
Inventors: 李望章; 宁广福; 陈毅
Original assignee: Zhejiang Deye Motor Technology Co ltd
Current assignee: Zhejiang Deye Motor Technology Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-08-23

Abstract

The invention discloses a motor rear cover continuous forming die which comprises an upper die and a lower die, wherein a tapping station is arranged between the upper die and the lower die and comprises a bottom die, a tapping die holder, a worm gear, a tapping sleeve and a tap, the bottom die is arranged on the lower die, the tapping die holder and the worm are arranged on the upper die, the bottom die corresponds to the tapping die holder up and down, the worm gear is rotatably arranged on the bottom die, the worm screw is screwed in an internal thread hole of the worm gear, the worm gear is in transmission connection with the tapping sleeve, and the tap is arranged on the tapping sleeve. Make behind the motor lid can once only be moulded on the modulus of continuity through the tapping station to greatly reduced cost of labor makes production efficiency improve moreover.

Description

Continuous forming die for rear cover of motor

Technical Field

The invention relates to a punch forming die, in particular to a motor rear cover continuous forming die.

Background

The rear motor cover is a cover body arranged at the rear end of a motor and is formed by punching an iron sheet through a connecting die, as shown in figure 1, the rear motor cover 1 structurally comprises a cover body-shaped shell 2, a central hole 3 is formed in the shell, a bearing chamber 4 is further arranged on the position of the central hole 3, threaded holes 5 are respectively formed in two sides of the bearing chamber, a notching station, a stretching station and a cutting station are needed to pass through in the forming process on a progressive die, specifically, a blank material sequentially passes through 8 stations through a continuous feeding device, the 1 st station is used for blanking and tearing a blank material, the 2 nd and 3 rd stations are used for cold extrusion of a riveting point, the 4 th station is used for punching the central hole, the 5 th station is used for flanging, hole flanging and forming, the 6 th station is used for shaping the bearing chamber 4, the 7 th station is used for cutting an installation part, the 8 th station is used for cutting a product and dropping, and the final threaded hole 5 needs to be additionally tapped and formed on a drill, because the continuous die cannot be molded at one time, the labor intensity of workers is increased, the production efficiency is lower, and certain cost is increased.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a motor rear cover continuous forming die with a tapping station, so that the labor cost is greatly reduced, and the production efficiency is improved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lid continuous forming die behind motor, includes mould and lower mould, goes up and is equipped with the tapping station between mould and the lower mould, and the tapping station includes die block, tapping die holder, worm wheel, tapping sleeve and tap, and the die block is installed on the lower mould, and tapping die holder and worm are installed on last mould, and die block and tapping die holder correspond from top to bottom, the rotatable installation of worm wheel is on the die block, the worm screw thread connect soon in the internal thread hole of worm wheel, the worm wheel with tapping sleeve transmission is connected, the tap install the tapping sleeve on.

Install worm wheel seat on the die block, the worm wheel passes through the rotatable installation of bearing on the worm wheel seat be connected with drive gear on the worm wheel, install output gear on the tapping sleeve still install middle composite gear in the tapping die block, this middle composite gear includes gear wheel and pinion, the pinion pass through the hold-in range with drive gear transmission is connected, the gear wheel with output gear meshing transmission.

The outer wall of the tapping sleeve is provided with a bearing and then is installed in the tapping die holder, the outer wall of the tapping sleeve is provided with a thread portion, a rotatable thread pitch sleeve is arranged in the tapping die holder, and the thread pitch sleeve is in threaded connection with the thread portion.

And a force unloading spring is arranged between the inner wall of the tapping die holder and the end surface of the tapping sleeve.

And a buffer spring is arranged on the bottom die.

The invention has the beneficial effects that: lid behind the motor is at the modulus of continuity extrusion in-process, carry out the tapping to the hole site through the tap station and form the screw hole, in the tapping process because the tapping sleeve moves along with last mould up-and-down motion, go up the mould and move down, the worm drives the worm wheel and rotates, the worm wheel drives the tapping rotation and moves down along with last mould simultaneously, just so can tap tooth formation screw hole to the hole site position after punching a hole, go up when shifting up the return on the mould, the worm shifts up and drives the worm wheel and circles round, just so just also drive circling round and shifting up of tap, make the lid directly one-time molding in the forming process of this modulus of continuity behind the motor, need not other tapping operation, thereby greatly reduced cost of labor, and make production efficiency improve.

The invention is further described with reference to the following figures and detailed description.

Drawings

FIG. 1 is a structural diagram of a rear cover of a motor in the background art;

FIG. 2 is a block diagram of an embodiment of the present invention;

FIG. 3 is a block diagram of a tapping station in an embodiment of the present invention.

Detailed Description

The following examples are provided to illustrate the present invention and should not be construed as limiting the scope of the invention.

As shown in fig. 2 and fig. 3, the embodiment discloses a motor rear cover continuous forming die, the continuous forming die comprises an upper die 1 and a lower die 2, 9 stations are arranged between the upper die 1 and the lower die 2 for forming the motor rear cover, a blank material 3 is formed at one time through the 9 stations by a continuous feeding device in sequence, and the 9 stations are respectively used for:

the 1 st station 4 is used for blanking and tearing the blank 3;

the 2 nd and 3 rd stations (5 and 6) are used for cold extrusion of riveting points;

punching a central hole at a 4 th station 7;

the 5 th station 8 is used for flanging, hole flanging and forming;

the 6 th station 9 is used for shaping the bearing chamber;

the 7 th station 10 is used for tapping at a hole flanging position, and the tapping specification is metric thread M4;

the 8 th station 11 is used for cutting the installation part;

the 9 th station 12 is for the cut products to fall off.

Wherein, the 7 th station is used as a tapping mechanism 10, other stations are used for punch forming or shearing through a detachable core part and a matched bottom die, the structures of the core part and the matched bottom die are designed according to the shape and the process requirements of a product, the detachable installation can be used for producing motor rear covers with various specifications for a conventional technical means, the 7 th station is used for tapping at a hole position of the tapping mechanism 10 for hole flanging, the tapping mechanism 10 comprises a bottom die 101, a tapping die holder 102, a worm 103, a worm wheel 104, a tapping sleeve 105 and a tapping 106, the bottom die 101 is installed on a lower die 2, the tapping die holder 102 and the worm 103 are installed on an upper die 1, the bottom die 101 and the tapping die holder 102 correspond up and down, the worm wheel 104 is rotatably installed on the bottom die 101, the worm wheel 103 is screwed in an internal threaded hole of the worm wheel 104, the worm wheel 104 is in transmission connection with the tapping sleeve 105, the tapping 106 is installed on the tapping sleeve 105, therefore, in the process that the upper die 1 drives the screw tap 106 to move downwards, the screw tap 106 rotates to tap teeth through the transmission of the worm 103 and the worm gear 104.

The bottom die 101 is provided with a worm wheel seat 107, the worm wheel 104 is rotatably arranged on the worm wheel seat 107 through a bearing, the worm wheel 104 is connected with a transmission gear 20, the tapping sleeve 30 is provided with an output gear 40, the tapping die holder 102 is further internally provided with an intermediate combination gear 50, the intermediate combination gear 50 comprises a large gear 501 and a small gear 502, the small gear 502 is in transmission connection with the transmission gear 20 through a synchronous belt, and the large gear 501 is in meshing transmission with the output gear 40, so that the rotating speed of the tap 106 can follow the up-and-down moving speed. The rotation and transmission of the worm wheel 104 are more reliable and stable through the structure.

The tapping sleeve 30 is mounted in the tapping die holder 102 after being provided with a bearing on the outer wall thereof, a thread portion is provided on the outer wall of the tapping sleeve 30, a rotatable thread pitch sleeve 60 is provided in the tapping die holder 102, and the thread pitch sleeve 60 is in threaded connection with the thread portion. The tapping device is adjusted according to the required screw pitch, so that a more accurate tapping effect is achieved.

The force unloading spring 70 is arranged between the inner wall of the tapping die holder 102 and the end face of the tapping sleeve 30, the force unloading spring 70 ensures that the tap 106 has good stability in the tapping process, the phenomenon that the output is blocked too fast can be avoided, the bottom die 101 and the lower die 2 are also provided with the buffer spring 90, the tapping die further comprises a plurality of equal-height bolts 80, and the end parts of the equal-height bolts 80 penetrate through the lower die 2 and are in threaded connection with the bottom die 101. This configuration also provides a cushion for the die block 101, both of which cushion and relief spring 70 prevent tapping from jamming during tapping.

Adopt above-mentioned technical scheme, the lid is at the modulus of continuity extrusion in-process behind the motor, accessible tap 106 station is carried out the tapping and is formed the screw hole to the hole site, in the tapping process because tapping sleeve 30 moves from top to bottom along with last mould 1, when going up mould 1 and moving down, worm 103 drives worm wheel 104 and rotates, worm wheel 104 drives the tapping rotation and moves down along with last mould 1 simultaneously, just so can attack tooth formation screw hole to the hole site position after punching a hole, when going up mould 1 and moving back, worm 103 shifts up and drives worm wheel 104 and circles round, just so also drive circling round and shifting up of tap 106, make the lid directly disposable shaping at the forming process of this modulus of continuity behind the motor, need not other tapping operation, thereby greatly reduced the cost of labor, and make production efficiency improve.

The invention aims to meet the high-precision requirement of mounting the rear cover and the shell of the motor, can be used for producing various products in multiple processes, and the multiple processes of stretching and tapping the rear cover of the motor are used in a continuous die.

The progressive die of the invention also has the following advantages:

1. and exchanging a plurality of sets of multi-process mold cores. The mold core can be quickly disassembled and exchanged in the upper mold 1 of the punch press without disassembling the progressive mold, and the exchange of the cores of the progressive molds of one type and variety can be completed within 30 minutes, so that the mold exchanging time of the progressive mold is greatly saved.

2. The development cost of the die is greatly saved for various product models. For example: the development cost of the multi-process continuous die for stretching and tapping the rear cover of one motor is estimated to be about 15 ten thousand RMB, one set of development cost of the core of the continuous die is about 2 ten thousand RMB, and the multi-process continuous die for stretching and tapping the rear cover of the motor can be simultaneously provided with more than 10 sets of core sleeves of the continuous die.

Claims

1. The utility model provides a lid continuous forming mould behind motor, includes mould and lower mould, its characterized in that: be equipped with the tapping station between last mould and the lower mould, the tapping station includes die block, tapping die holder, worm wheel, screw tap sleeve and screw tap, and the die block is installed on the lower mould, and tapping die holder and worm are installed on last mould, and die block and tapping die holder correspond from top to bottom, the worm wheel is rotatable to be installed on the die block, the worm screw thread connects in the internal thread hole of worm wheel soon, the worm wheel with screw tap sleeve transmission is connected, the screw tap install the screw tap sleeve on, install the worm wheel seat on the die block, the worm wheel passes through the bearing rotatable installation on the worm wheel seat be connected with drive gear on the worm wheel, install output gear on the tapping sleeve still install middle composite gear in the tapping die holder, this middle composite gear includes gear wheel and pinion, the pinion pass through the hold-in range with drive gear transmission is connected, the bull gear is in meshing transmission with the output gear.

2. The motor rear cover continuous molding die as claimed in claim 2, wherein: the outer wall of the tapping sleeve is provided with a bearing and then is installed in the tapping die holder, the outer wall of the tapping sleeve is provided with a thread portion, a rotatable thread pitch sleeve is arranged in the tapping die holder, and the thread pitch sleeve is in threaded connection with the thread portion.

3. The motor back cover continuous forming die as claimed in claim 3, wherein: and a force unloading spring is arranged between the inner wall of the tapping die holder and the end face of the tapping sleeve.