CN210061020U

CN210061020U - Quick-change device for working head of multifunctional machine

Info

Publication number: CN210061020U
Application number: CN201920954837.8U
Authority: CN
Inventors: 李孟强; 胡豪杰; 裘俊龙
Original assignee: Polytron Technologies Inc In Zhengyang
Current assignee: Polytron Technologies Inc In Zhengyang
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-02-14
Anticipated expiration: 2029-06-24

Abstract

The utility model discloses a quick change device of multi-function machine tool head, the output shaft be hollow structure and install quick detach subassembly, quick detach subassembly include down the pressure disk, with the pressure disk even locking depression bar as an organic whole down, go up pressure disk, locking spring, pull the subassembly, go up pressure disk, locking spring housing establish on the locking depression bar after compress tightly locking spring with lock nut and locking depression bar screw-thread fit and form integrative and install on the cavity of output shaft, go up pressure disk interference fit ground and fix on the output shaft, the head protrusion output shaft of locking depression bar and the trigger subassembly cooperation of setting on the skull, the pressure disk corresponds the working head and compresses tightly on last pressure disk under the locking spring effect down. After adopting this structure, have reasonable in design, dismantle convenient, simple to operate, firm in connection, use reliable, need not just can change advantages such as working head with the help of external instrument.

Description

Quick-change device for working head of multifunctional machine

Technical Field

The utility model relates to an electric tool technical field, especially a tear simple, simple to operate, use reliable multi-functional quick change of machine tool head device open.

Background

The multifunctional machine of the electric tool is commonly called universal treasure and also called universal treasure, when the multifunctional machine works, a motor on a machine body drives a working head fixed on an output shaft to swing at a small amplitude and a high speed through a shifting fork, functions of polishing, cutting, scraping, polishing and the like are realized through adopting different working heads, and the multifunctional machine is widely applied to the fields of home decoration industry, furniture industry, automobile and shipbuilding manufacturing industry and the like. The mounting structure of the working head of the multifunctional machine sold in the market at present is complex, and the multifunctional machine has the following defects in the using process: firstly, the working head is inconvenient to disassemble, install and replace, the clamping of the working head is generally realized by the threaded connection of the inner hexagon bolt, and an inner hexagon wrench needs to be used by an external tool; secondly, the thread stroke of the hexagon socket head cap screw is long, so that the work head is troublesome to replace, and the work efficiency is low; and thirdly, under the working environment of high-frequency vibration, the thread locking is not very reliable. For this reason, manufacturers also improve the tool, such as a head shell with a disassembling tool, but the principle of locking the head shell by threads is not changed, and the effect is not ideal. Aiming at the problems, many manufacturers and acquaintances develop and develop the products, but no satisfactory products are produced.

Disclosure of Invention

In order to overcome the defects existing in the prior art, the utility model aims to provide a multifunctional machine working head quick-change device which has the advantages of reasonable design, convenient disassembly, convenient installation, firm connection, reliable use and no need of replacing the working head by an external tool.

The utility model provides a technical scheme that above-mentioned technical problem adopted, it is installed on the head shell of multi-functional machine, installs rotatable output shaft and drives the rotatory wobbling shift fork of output shaft in the head shell, the output shaft be hollow structure and install quick detach subassembly, quick detach subassembly include down the pressure disk, with the pressure disk even locking depression bar as an organic whole down, go up pressure disk, locking spring, pull the subassembly, go up pressure disk, locking spring housing establish on the locking depression bar after compress tightly locking spring with locking nut and locking depression bar screw-thread fit and form integrative and install on the cavity of output shaft, go up pressure disk interference fit and fix on the output shaft, the head protrusion output shaft of locking depression bar cooperates with the trigger subassembly that sets up on the head shell, compress tightly the working head correspondence under the locking spring effect on last pressure disk down.

The utility model discloses a further scheme, pull the subassembly and include trigger, cam (17), cylindric lock, the both ends of cylindric lock correspond through the steel bushing and set up on the hangers about the head shell both sides, trigger and cam correspond the cover and establish on the cylindric lock, the cam correspondence is installed between the fork about the trigger, the locking depression bar head cooperation of cam and protrusion output shaft.

The utility model discloses a further scheme, last pressure disk on be equipped with the flower disc tooth, the pressure disk correspondence is equipped with and flower disc tooth complex inner groovy down, the working head on be equipped with flower disc tooth complex flower disc tooth's socket.

The utility model discloses a further scheme, the working head be for polishing head, cutting knife, spatula or rubbing head.

The utility model discloses a further scheme, the first shell on correspond and be fixed with first bearing and second bearing, the output shaft rotationally sets up on the first shell through first bearing and second bearing, the output shaft on correspond and be equipped with the location jump ring from top to bottom.

The utility model discloses a further scheme, first bearing be bearing, the second bearing be dark hook ball bearing.

After adopting above-mentioned structure, compare with prior art and have following advantage and effect: firstly, the working head can be quickly disassembled, installed and replaced by pulling the trigger without an external tool when being replaced, the operation is simple and convenient, and the working efficiency and the production efficiency are improved; secondly, the working head is clamped by the elasticity of the locking spring, the working mode is simpler, and the locking reliability is high; thirdly, simple structure, the equipment is convenient, uses reliably, and convenient manufacture is with low costs, long service life.

Drawings

Fig. 1 is a schematic view of the exploded structure of the present invention.

Fig. 2 is a schematic view of the fitting structure in the operating state of the present invention.

Fig. 3 is a schematic view of the fitting structure when the working heads are exchanged.

The locking mechanism comprises a lower pressure plate 1, a locking pressure rod 2, a working head 3, a fluted disc tooth groove 4, fluted disc teeth 5, an upper pressure plate 6, a locking spring 7, a locking nut 8, an output shaft 9, a first bearing 10, a shifting fork 11, a second bearing 12, a positioning snap spring 13, a shell with 14 heads, a steel sleeve 15, a cylindrical pin 16, a cam 17 and a trigger 18.

Detailed Description

Fig. 1 to 3 show a quick-change device for a working head of a multifunctional machine according to an embodiment of the present invention, which is installed on a head housing 14 of the multifunctional machine, wherein a rotatable output shaft 9 and a shifting fork 11 for driving the output shaft 9 to rotate and swing are installed in the head housing 14, output shaft 9 be hollow structure and install quick detach subassembly, quick detach subassembly include pressure disk 1 down, with pressure disk 1 even locking depression bar 2 as an organic whole down, go up pressure disk 6, locking spring 7, pull the subassembly, go up pressure disk 6, locking spring 7 cover establish on locking depression bar 2 after compress tightly locking spring 7 with locking nut 8 and locking depression bar 2 screw-thread fit and form an organic whole and install on the cavity of output shaft 9, it fixes on output shaft 9 to go up pressure disk 6 interference fit, the head of locking depression bar 2 protrudes output shaft 9 and sets up the trigger subassembly cooperation on skull 14, pressure disk 1 corresponds the working head 3 and compresses tightly on last pressure disk 6 under locking spring 7 effect down. In order to realize different functions, the working head 3 is a polishing head, a cutting knife, a scraping blade or a polishing head.

In order to conveniently detach, install and replace the working head 3, the pulling assembly comprises a trigger 18, a cam 17 and a cylindrical pin 16, two ends of the cylindrical pin 16 are correspondingly arranged on a left hanging lug and a right hanging lug on two sides of the head shell 14 through steel sleeves 15, the trigger 18 and the cam 17 are correspondingly sleeved on the cylindrical pin 16, the cam 17 is correspondingly arranged between a left fork head and a right fork head of the trigger 18, and the cam 17 is matched with the head of the locking compression bar 2 protruding out of the output shaft 9.

In order to ensure that the working head 3 is firmly and reliably mounted, the upper pressure plate 6 is provided with the disc chuck teeth 5, the lower pressure plate 1 is correspondingly provided with inner grooves matched with the disc chuck teeth 5, and the working head 3 is provided with the disc chuck tooth grooves 4 matched with the disc chuck teeth 5.

In order to ensure that the output shaft 9 rotates flexibly and is used reliably, the head shell 14 is correspondingly fixed with a first bearing 10 and a second bearing 12, the output shaft 9 is rotatably arranged on the head shell 14 through the first bearing 10 and the second bearing 12, the output shaft 9 is correspondingly provided with an upper positioning snap spring 13 and a lower positioning snap spring 13, the upper positioning snap spring 13 and the lower positioning snap spring 13 can not only prevent the output shaft from moving axially in a crossing manner, but also ensure that the first bearing 10 and the second bearing 12 are installed reliably. The first bearing 10 is a needle bearing, and the second bearing 12 is a deep hook ball bearing.

When the working head 3 is disassembled and replaced, the trigger 18 is pulled upwards, the trigger 18 drives the cam 17 to overcome the elasticity of the locking spring 7 and then to press the locking pressure rod 2, so that an assembly gap is formed between the lower pressure plate 1 and the upper pressure plate 6, and the working head can be disassembled and replaced; after the installation is finished, the trigger 18 is pulled to reset, the cam 17 is separated from the locking compression bar 2, the locking compression bar 2 drives the lower pressure plate 1 to move upwards under the action of the elastic force of the locking spring 7 and clamps the working head 3 on the upper pressure plate 6, and therefore the quick disassembly, installation and replacement of the working head are finished.

The above description is only the specific embodiment of the present invention, and is not intended to limit the present invention in any form, and the present invention does not depart from the technical solution of the present invention, and the made simple modification, equivalent change or modification all fall into the protection scope of the present invention.

Claims

1. The utility model provides a multi-function machine work head quick change device, installs on the first shell (14) of multi-function machine, installs rotatable output shaft (9) and drives output shaft (9) rotatory wobbling shift fork (11) in first shell (14), characterized by: output shaft (9) be hollow structure and install quick detach subassembly, quick detach subassembly include pressure disk (1) down, with pressure disk (1) even locking depression bar (2) as an organic whole down, go up pressure disk (6), locking spring (7), pull the subassembly, go up pressure disk (6), locking spring (7) cover establish on locking depression bar (2) back compress tightly locking spring (7) with lock nut (8) and locking depression bar (2) screw-thread fit and form integrative and install on the cavity of output shaft (9), it fixes on output shaft (9) to go up pressure disk (6) interference fit, the head of locking depression bar (2) protrusion output shaft (9) and the trigger subassembly cooperation of setting on skull (14), pressure disk (1) correspond working head (3) under locking spring (7) effect and compress tightly on last (6).

2. The quick-change device for the working head of the multifunctional machine as claimed in claim 1, which is characterized in that: the pulling assembly comprises a trigger (18), a cam (17) and a cylindrical pin (16), wherein the two ends of the cylindrical pin (16) are correspondingly arranged on left and right lugs on the two sides of a head shell (14) through steel sleeves (15), the trigger (18) and the cam (17) are correspondingly sleeved on the cylindrical pin (16), the cam (17) is correspondingly arranged between left and right fork heads of the trigger (18), and the cam (17) is matched with the head of a locking compression bar (2) protruding out of an output shaft (9).

3. The quick-change device for the working head of the multifunctional machine as claimed in claim 1 or 2, which is characterized in that: the upper pressure plate (6) is provided with chuck teeth (5), the lower pressure plate (1) is correspondingly provided with inner grooves matched with the chuck teeth (5), and the working head (3) is provided with chuck tooth grooves (4) matched with the chuck teeth (5).

4. The quick-change device for the working head of the multifunctional machine as claimed in claim 3, which is characterized in that: the working head (3) is a polishing head, a cutting knife, a scraping blade or a polishing head.

5. The quick-change device for the working head of the multifunctional machine as claimed in claim 1, which is characterized in that: the head shell (14) is correspondingly fixed with a first bearing (10) and a second bearing (12), the output shaft (9) is rotatably arranged on the head shell (14) through the first bearing (10) and the second bearing (12), and the output shaft (9) is correspondingly provided with an upper positioning snap spring and a lower positioning snap spring (13).

6. The quick-change device for the working head of the multifunctional machine as claimed in claim 5, which is characterized in that: the first bearing (10) is a needle bearing, and the second bearing (12) is a deep hook ball bearing.